GOLDMAN SACHS TRUST
497, 1995-05-31
Previous: GOLDMAN SACHS TRUST, 497, 1995-05-31
Next: WITTER DEAN MANAGED ASSETS TRUST, 497, 1995-05-31



<PAGE>
 
                      GS SHORT-TERM GOVERNMENT AGENCY FUND
                   GS ADJUSTABLE RATE GOVERNMENT AGENCY FUND
                        GS SHORT DURATION TAX-FREE FUND
                           GS CORE FIXED INCOME FUND
 
                             ADMINISTRATION SHARES
                             ---------------------
 
                        SUPPLEMENT DATED JUNE 1, 1995 TO
                        PROSPECTUSES DATED MARCH 1, 1995
 
   As used in the accompanying Prospectus, the term "Business Day" means any
day the New York Stock Exchange is open for trading, which is Monday through
Friday except for holidays. The New York Stock Exchange is closed on the
following holidays: New Year's Day (observed), Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Thanksgiving Day
and Christmas Day.
 
   Effective June 7, 1995, purchases and redemptions of Administration Shares
of the Funds must be settled within three Business Days of the receipt by a
Fund of a complete purchase order or properly executed redemption request.
Except for the requirement that the Fund receive payment for any Administration
Shares within three Business Days of receipt of a purchase order and as set
forth below, the purchase procedures described in the accompanying Prospectus
have not changed. Redemption proceeds to be paid by check will normally be
mailed within three Business Days after receipt of a properly executed
redemption request. Redemption proceeds paid by wire will normally be wired on
the next Business Day following receipt of a properly executed redemption
request but may be paid up to three Business Days after receipt of a properly
executed redemption request.
 
   "Purchase of Administration Shares--Other Purchase Information" in the
accompanying Prospectus is revised as follows:
 
   PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is
received from a Service Organization by Goldman Sachs by 3:00 p.m. Chicago time
and payment is made by wire transfer or ACH transfer, shares will be issued and
dividends will begin to accrue on the purchased shares on the later of (i) the
Business Day after receipt by Goldman Sachs of a purchase order or (ii) the day
of receipt of a Federal Funds wire or an ACH transfer by Northern.
 
   PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a Service Organization's
check or Federal Reserve draft is received by Goldman Sachs by 3:00 p.m.
Chicago time, shares will be issued and dividends will begin to accrue on the
purchased shares on the Business Day after the date payment is received by
Goldman Sachs.
<PAGE>
 
                      GS SHORT-TERM GOVERNMENT AGENCY FUND
                   GS ADJUSTABLE RATE GOVERNMENT AGENCY FUND
                        GS SHORT DURATION TAX-FREE FUND
                           GS CORE FIXED INCOME FUND
 
                              INSTITUTIONAL SHARES
 
                             ---------------------
 
                        SUPPLEMENT DATED JUNE 1, 1995 TO
                        PROSPECTUSES DATED MARCH 1, 1995
 
   As used in the accompanying Prospectus, the term "Business Day" means any
day the New York Stock Exchange is open for trading, which is Monday through
Friday except for holidays. The New York Stock Exchange is closed on the
following holidays: New Year's Day (observed), Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Thanksgiving Day
and Christmas Day.
 
   Effective June 7, 1995, purchases and redemptions of Institutional Shares of
the Funds must be settled within three Business Days of the receipt by a Fund
of a complete purchase order or properly executed redemption request. Except
for the requirement that the Fund receive payment for any Institutional Shares
within three Business Days of receipt of a purchase order and as set forth
below, the purchase procedures described in the accompanying Prospectus have
not changed. Redemption proceeds to be paid by check will normally be mailed
within three Business Days after receipt of a properly executed redemption
request. Redemption proceeds paid by wire will normally be wired on the next
Business Day following receipt of a properly executed redemption request but
may be paid up to three Business Days after receipt of a properly executed
redemption request.
 
   "Purchase of Institutional Shares--Other Purchase Information" in the
accompanying Prospectus is revised as follows:
 
   PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is
received by Goldman Sachs by 3:00 p.m. Chicago time and payment is made by wire
transfer or ACH transfer, shares will be issued and dividends will begin to
accrue on the purchased shares on the later of (i) the Business Day after
receipt by Goldman Sachs of a purchase order or (ii) the day of receipt of
Federal Funds wire or an ACH transfer by Northern.
 
   PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a purchase check or Federal
Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago time, shares
will be issued and dividends will begin to accrue on the purchase shares on the
Business Day after the date payment is received.
<PAGE>
 
                      GS SHORT-TERM GOVERNMENT AGENCY FUND
                   GS ADJUSTABLE RATE GOVERNMENT AGENCY FUND
                        GS SHORT DURATION TAX-FREE FUND
                           GS CORE FIXED INCOME FUND
 
                                 SERVICE SHARES
                             ---------------------
 
                        SUPPLEMENT DATED JUNE 1, 1995 TO
                        PROSPECTUSES DATED MARCH 1, 1995
 
   As used in the accompanying Prospectus, the term "Business Day" means any
day the New York Stock Exchange is open for trading, which is Monday through
Friday except for holidays. The New York Stock Exchange is closed on the
following holidays: New Year's Day (observed), Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Thanksgiving Day
and Christmas Day.
 
   Effective June 7, 1995, purchases and redemptions of Service Shares of the
Funds must be settled within three Business Days of the receipt by a fund of a
complete purchase order or properly executed redemption request. Except for the
requirement that the Fund receive payment for any Service Shares within three
Business Days of receipt of a purchase order and as set forth below, the
purchase procedures described in the accompanying Prospectus have not changed.
Redemption proceeds to be paid by check will normally be mailed within three
Business Days after receipt of a properly executed redemption request.
Redemption proceeds paid by wire will normally be wired on the next Business
Day following receipt of a properly executed redemption request but may be paid
up to three Business Days after receipt of a properly executed redemption
request.
 
   "Purchase of Service Shares--Other Purchase Information" in the accompanying
Prospectus is revised as follows:
 
   PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is
received from a Service Organization by Goldman Sachs by 3:00 p.m. Chicago time
and payment is made by wire transfer or ACH transfer, Share will be issued and
dividends will begin to accrue on the purchased shares on the later of (i) the
Business Day after receipt by Goldman Sachs of a purchase order or (ii) the day
of receipt of a Federal Funds wire or an ACH transfer by Northern.
 
   PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a Service Organization's
check or Federal Reserve draft is received by Goldman Sachs by 3:00 p.m.
Chicago time, Shares will be issued and dividends will begin to accrue on the
purchased shares on the Business Day after the date payment is received by
Goldman Sachs.
<PAGE>
 
                               GS ADJUSTABLE RATE
                             GOVERNMENT AGENCY FUND
                              INSTITUTIONAL SHARES
 
                                  MANAGED BY
                                  ----------
                      GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
                                AN AFFILIATE OF
                              GOLDMAN, SACHS & CO.
 
                                ----------------
 
  GS Adjustable Rate Government Agency Fund (the "Fund") is one fund in a
family of funds advised by Goldman Sachs Funds Management, L.P. (the
"Investment Adviser") or its affiliates, Goldman Sachs Asset Management and
Goldman Sachs Asset Management International. The Fund is organized as a
separate diversified portfolio of Goldman Sachs Trust (the "Trust"), an open-
end, management investment company.
 
  The Fund seeks to provide investors with a high level of current income,
consistent with low volatility of principal. The Fund will seek to achieve its
objective through investment in securities issued or guaranteed by the U.S.
Government, its agencies or instrumentalities. Under normal circumstances, at
least 65% of the Fund's total assets will consist of adjustable rate mortgage
pass-through securities and other mortgage securities with periodic interest
rate resets, which are issued or guaranteed by the U.S. Government, its
agencies or instrumentalities. The Fund may also invest in other mortgage-
backed securities and other obligations issued or guaranteed by the U.S.
Government, its agencies and instrumentalities, as well as repurchase
agreements collateralized by U.S. Government securities. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities.
 
  The Fund seeks to minimize fluctuation in the value of its portfolio
securities and therefore its net asset value. It believes that it can achieve
this objective by investing primarily in guaranteed adjustable rate mortgage-
backed securities, maintaining a maximum duration equal to that of a two-year
U.S. Treasury security and a target duration in a range approximately equal to
that of a 6-month to one-year U.S. Treasury security (computed using the method
described herein) and utilizing certain active management techniques to hedge
interest rate risks and to enhance its return. These techniques include the use
of futures contracts (including options on futures), mortgage and interest rate
swaps and interest rate floors, caps and collars. The Fund's investment in
mortgage-backed securities and the use of active management techniques may
entail certain risks. See "Risk Factors."
                                                        (continued on next page)
 
INSTITUTIONAL SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR
GUARANTEED OR ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION,
AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
RESERVE BOARD OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN INSTITUTIONAL
SHARES OF THE FUND INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF
PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
                 The date of this Prospectus is March 1, 1995.
<PAGE>
 
  The Fund seeks to provide investors with a higher level of current income
than they could receive from a money market fund. Although the Fund's net asset
value will fluctuate more than that of a portfolio of money market securities,
the Fund will attempt to minimize the effect of interest rate fluctuations on
the Fund's net asset value. See "Risk Factors."
 
  Goldman Sachs Funds Management, L.P., New York, New York, an affiliate of
Goldman, Sachs & Co., serves as the Fund's investment adviser. Goldman, Sachs &
Co. serves as the Fund's distributor and transfer agent. The Trust's custodian
is State Street Bank and Trust Company.
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Institutional Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from Goldman, Sachs & Co. by calling the telephone
number, or writing to one of the addresses, listed below.
 
GOLDMAN SACHS TRUST                     GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
4900 SEARS TOWER                        INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606                 ONE NEW YORK PLAZA      
                                        NEW YORK, NEW YORK 10004 
                                                                 
                                                                 
GOLDMAN, SACHS & CO.                    GOLDMAN, SACHS & CO.   
DISTRIBUTOR                             TRANSFER AGENT          
85 BROAD STREET                         4900 SEARS TOWER        
NEW YORK, NEW YORK 10004                CHICAGO, ILLINOIS 60606
                                                                 
TOLL FREE (IN U.S.)...................  800-621-2550
 
                                       2
<PAGE>
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Adjustable Rate Government Agency Fund (the "Fund") is one fund in a
family of funds advised by Goldman Sachs Funds Management, L.P. (the
"Investment Adviser") or its affiliates, Goldman Sachs Asset Management and
Goldman Sachs Asset Management International. The Fund is organized as a
separate diversified portfolio of Goldman Sachs Trust (the "Trust"), an open-
end, management investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The investment objective of the Fund is to provide investors with a high
level of current income, consistent with low volatility of principal. The Fund
seeks to achieve its objective by investing primarily in securities issued or
guaranteed by the U.S. Government, its agencies or instrumentalities. Under
normal circumstances, at least 65% of the Fund's total assets will consist of
adjustable rate mortgage pass-through securities and other mortgage securities
with periodic interest rate resets, which are issued or guaranteed by the U.S.
Government, its agencies or instrumentalities. The Fund may also invest in
other mortgage-backed securities and other obligations issued or guaranteed by
the U.S. Government, its agencies and instrumentalities, as well as repurchase
agreements collateralized by U.S. Government securities. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities.
 
  The Fund may employ certain active management techniques to hedge the
interest rate risks associated with the Fund's portfolio securities, to enhance
its return and to minimize fluctuation in its net asset value. These include,
but are not limited to, the use of futures contracts (including options on
futures), mortgage and interest rate swaps and interest rate floors, caps and
collars. The Fund may also utilize portfolio securities lending, mortgage
dollar rolls and repurchase agreements in an attempt to enhance the return
achieved by the Fund. See "Investment Objective and Policies" and "Other
Investments and Practices." There can be no assurance that the Fund will
achieve its investment objective.
 
  The Fund may, for temporary defensive purposes, hold or invest more than 35%
of its total assets in cash, U.S. Treasury securities or high quality money
market instruments, including commercial paper, bankers' acceptances,
repurchase agreements or other debt obligations with a remaining maturity of
one year or less.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Funds Management,
L.P., an affiliate of Goldman, Sachs & Co. ("Goldman Sachs"), serves as the
Fund's investment adviser. The Fund's portfolio is managed by the Investment
Adviser's mortgage-backed securities team, which, as of January 31, 1995, was
responsible for managing approximately $5.2 billion in assets. In this
capacity, the Investment Adviser provides investment advisory and
administrative services and receives from the Fund a monthly fee equal on an
annual basis to 0.40% of the Fund's average daily net assets. Goldman Sachs
Funds Management, L.P. is registered with the Securities and Exchange
Commission (the "SEC") as an investment adviser. See "Investment Adviser" and
"Management--Investment Adviser."
 
                                       3
<PAGE>
 
 
                PURCHASE AND REDEMPTION OF INSTITUTIONAL SHARES
 
  The minimum initial investment is $50,000 in Institutional Shares of the Fund
alone or in combination with Institutional Shares of any other mutual fund
sponsored by Goldman Sachs and designated as an eligible fund for this purpose
and the relevant class of any portfolio of Goldman Sachs Money Market Trust.
Institutional Shares of the Fund may be purchased through Goldman Sachs at the
current net asset value per share without the imposition of a sales load. See
"Purchase of Institutional Shares." The Fund will redeem its Institutional
Shares upon request of a shareholder on any Business Day at the net asset value
next determined after receipt of such request in proper form. See "Redemption
of Institutional Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
shareholder inquiries. See "Management--Distributor and Transfer Agent."
 
                                  RISK FACTORS
 
  GENERAL. While the Fund seeks to provide investors with a high level of
current income, consistent with low volatility of principal, the Fund's current
income and net asset value per share will fluctuate. The inherent volatility
risk of the Fund is such that, during any particular period, if shares of the
Fund are redeemed, an investor could suffer a loss of principal.
 
  INVESTMENT IN MORTGAGE-BACKED SECURITIES GENERALLY. The Fund's investments in
mortgage pass-through securities and other securities representing an interest
in or collateralized by adjustable rate and fixed rate mortgage loans
("Mortgage-Backed Securities") entail certain risks. These risks include the
failure of an issuer or guarantor to meet its obligations, adverse interest
rate changes, adverse economic, real estate or unemployment trends, failures in
connection with processing of transactions and the effects of prepayments on
mortgage cash flows. The Fund's policy of investing primarily in securities
issued or guaranteed by the U.S. Government, its agencies or instrumentalities,
however, is designed to minimize credit and performance related risks otherwise
associated with Mortgage-Backed Securities.
 
  YIELD CHARACTERISTICS. The yield characteristics of the Mortgage-Backed
Securities in which the Fund will invest differ from those of traditional fixed
income securities. The major differences typically include more frequent
interest and principal payments (usually monthly) on Mortgage-Backed
Securities, the adjustability of interest rates, and the possibility that
prepayments of principal may be made at any time.
 
  Prepayment rates are influenced by changes in current interest rates and a
variety of economic, geographic, social and other factors and cannot be
predicted with certainty. Both adjustable rate mortgage loans and fixed rate
mortgage loans may be subject to a greater rate of principal prepayments in a
declining interest rate environment and to a lesser rate of principal
prepayments in an increasing
 
                                       4
<PAGE>
 
interest rate environment. Under certain interest rate and prepayment rate
scenarios, the Fund may fail to recoup fully its investment in some of the
Mortgage-Backed Securities it holds notwithstanding a direct or indirect
governmental or agency guarantee. The Fund's investments in Mortgage-Backed
Securities are subject to more rapid repayment than their stated maturity dates
would indicate as a result of the pass-through of prepayments of principal on
the underlying loans. Such repayment may increase the volatility of an
investment in Mortgage-Backed Securities relative to similarly rated debt
securities and, therefore, may increase the volatility of the Fund's net asset
value. The Fund intends to use hedging techniques to control these risks. See
"Investment Objective and Policies" and "Other Investments and Practices." When
the Fund reinvests amounts representing scheduled payments and unscheduled
prepayments of principal, it may receive a rate of interest that is lower than
the rate on its existing portfolio of adjustable rate mortgage pass-through
securities. Thus, Mortgage-Backed Securities, and adjustable rate mortgage
pass-through securities in particular, may be less effective than other types
of U.S. Government securities as a means of "locking in" interest rates.
 
  MARKET RISKS.  The securities in the Fund's portfolio will tend to decrease
in value when interest rates rise and increase in value when interest rates
fall. Because the Fund's investments are interest rate sensitive, the Fund's
performance will depend in large part upon the ability of the Fund to respond
to fluctuations in market interest rates and to utilize appropriate strategies
to maximize returns to the Fund, while attempting to minimize the associated
risks to its invested capital. Operating results will also depend upon the
availability of opportunities for the investment of the Fund's assets,
including purchases and sales of suitable securities.
 
  The market value of the Fund's adjustable rate Mortgage-Backed Securities may
be adversely affected if interest rates increase faster than the rates of
interest payable on such securities or by the adjustable rate mortgage loans
underlying such securities. Furthermore, adjustable rate Mortgage-Backed
Securities or the mortgage loans underlying such securities may contain
provisions limiting the amount by which rates may be adjusted upward and
downward and may limit the amount by which monthly payments may be increased or
decreased to accommodate upward and downward adjustments in interest rates.
These provisions may increase the sensitivity of such Mortgage-Backed
Securities to changes in value resulting from interest rate fluctuations.
 
  Certain adjustable rate mortgage loans may provide for periodic adjustments
of scheduled payments in order to fully amortize the mortgage loan by its
stated maturity. Other adjustable rate mortgage loans may permit such stated
maturity to be extended or shortened in accordance with the portion of each
payment that is applied to interest in accordance with the periodic interest
rate adjustments.
 
  Although having less risk of decline in value during periods of rising
interest rates, adjustable rate Mortgage-Backed Securities have less potential
for capital appreciation than fixed rate Mortgage-Backed Securities, because
their coupon rates will decline in response to market interest rate declines.
The market value of fixed rate Mortgage-Backed Securities may be adversely
affected as a result of increases in interest rates and, because of the risk of
unscheduled principal prepayments, may benefit less than other fixed rate
securities of similar maturity from declining interest rates. Finally, a higher
than anticipated rate of unscheduled principal prepayments on Mortgage-Backed
Securities purchased at a premium or a lower than anticipated rate of
unscheduled principal payments on Mortgage-Backed Securities purchased at a
discount may result in a lower yield than was anticipated at the time the
securities were purchased.
 
 
                                       5
<PAGE>
 
  OTHER INVESTMENTS AND PRACTICES. The Fund may invest in other instruments,
including obligations of the United States, and notes, bonds and discount notes
of U.S. Government agencies or instrumentalities. The Fund may engage in
certain other investment practices that also involve special risks. These
include, but are not limited to, the use of futures contracts (including
options on futures), mortgage and interest rate swaps and interest rate floors,
caps and collars, making forward commitments, lending portfolio securities and
entering into mortgage dollar rolls and repurchase agreements. See "Other
Investments and Practices."
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, its divisions and
affiliates (including the Investment Adviser), partners and officers, in the
investment activities and business operations of the Fund may present certain
conflicts of interest, as described under "Management--Investment Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends to declare a daily dividend determined with the objective of
distributing the majority of net investment income while enhancing the
stability of principal. Such dividends will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially
all of the Fund's net investment income. From time to time a portion of such
dividends may constitute a return of capital. The Fund also intends that net
realized capital gains, if any, after offset by any available capital loss
carryforwards from prior taxable years, will be declared as a dividend at least
annually. Shareholders will receive dividends in additional Institutional
Shares of the Fund or may elect to receive cash as described under "Dividends."
 
                               FEES AND EXPENSES
                            (INSTITUTIONAL SHARES)*
<TABLE>
<CAPTION>
                                                            GS ADJUSTABLE RATE
                                                          GOVERNMENT AGENCY FUND
                                                          ----------------------
<S>                                                       <C>
SHAREHOLDER TRANSACTION EXPENSES:
    Maximum Sales Load Imposed on Purchases..............          None
    Maximum Sales Load Imposed on Reinvested Dividends...          None
    Redemption Fees......................................          None
    Exchange Fees........................................          None
ANNUAL FUND OPERATING EXPENSES:
(AS A PERCENTAGE OF AVERAGE NET ASSETS)
    Management Fees......................................          0.40%
    Distribution (Rule 12b-1) Fees.......................          None
    Other Expenses (after expense limitation)............          0.05%**
                                                                   ----
        TOTAL FUND OPERATING EXPENSES
         (AFTER EXPENSE LIMITATION)......................          0.45%**
                                                                   ====
</TABLE>

EXAMPLE:
- --------
You would pay the following expenses on a hypothetical $1,000 investment, as-
suming (1) a 5% annual return and (2) redemption at the end of each time peri-
od:

<TABLE>  
<CAPTION> 

1 YEAR  3 YEARS  5 YEARS  10 YEARS
- ------  -------  -------  --------
<S>     <C>      <C>      <C>
$5      $14      $25      $57
</TABLE>
 
                                       6
<PAGE>
 
- --------
 * The information set forth in the foregoing table and hypothetical example is
   based on estimated amounts for the current year and relates only to
   Institutional Shares of the Fund. See "Shares of the Trust." Administration
   Shares, Service Shares and Class A Shares of the Fund are subject to
   different fees and expenses. Administration Shares are sold at net asset
   value per share and are subject to an administration fee of up to 0.25% of
   average daily net assets. Service Shares are sold at net asset value per
   share and are subject to a service fee of up to 0.50% of average daily net
   assets. Class A Shares are sold at net asset value per share plus a sales
   charge of up to 1.5% and are subject to a distribution and service fee which
   is currently limited to 0.25% of average daily net assets. All other
   expenses related to Administration Shares, Service Shares and Class A Shares
   are the same as for Institutional Shares.
** The Investment Adviser voluntarily agreed to reduce or limit certain "Other
   Expenses" of the Fund (excluding advisory, distribution and service fees,
   payments to Service Organizations (as defined below), taxes, interest and
   brokerage and litigation, indemnification and other extraordinary expenses)
   to the extent such expenses exceeded 0.05% per annum of the Fund's average
   net assets. If the Investment Adviser had not agreed to reduce or otherwise
   limit certain "Other Expenses" of the Fund, the Fund's other expenses and
   total operating expenses attributable to Institutional Shares of the Fund
   would have been 0.09% and 0.49%, respectively. The foregoing table and
   example also reflect current operating expenses that will be applicable on an
   ongoing basis. See "Management--Investment Adviser." Annual operating
   expenses incurred by the Fund during the fiscal year ended October 31, 1994
   (expressed as a percentage of average daily net assets after fee adjustments)
   were as follows: Management Fees and Other Expenses of 0.40% and 0.06%,
   respectively for total operating expenses of 0.46%.
 
   The purpose of the foregoing table is to assist investors in understanding
   the various costs and expenses of the Fund that an investor in the Fund will
   bear directly or indirectly. The costs and expenses included in the table and
   hypothetical example above should not be considered as representative of past
   or future expenses. Actual fees and expenses may be greater or less than
   those indicated. Moreover while the example assumes a 5% annual return, the
   Fund's actual performance will vary and may result in an actual return
   greater or less than 5%. See "Management--Investment Adviser."
 
                                       7
<PAGE>
 
                              FINANCIAL HIGHLIGHTS
 
          SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  The following data with respect to Institutional Shares and Administration
Shares of the Fund outstanding during the periods indicated has been audited by
Arthur Andersen LLP, independent public accountants, as indicated in their
report incorporated by reference and attached to the Additional Statement from
the Fund's annual report to shareholders for the fiscal year ended October 31,
1994 (the "Annual Report"). This information should be read in conjunction with
the financial statements and related notes incorporated by reference and
attached to the Additional Statement. The Annual Report also contains
performance information and is available upon request and without charge by
writing to any of the addresses on the inside cover of this Prospectus.
 
<TABLE>
<CAPTION>
                                                                        DISTRIBUTIONS
                               INCOME FROM INVESTMENT OPERATIONS       TO SHAREHOLDERS
                           ----------------------------------------- --------------------
                                             NET
                 NET ASSET               REALIZED AND       TOTAL       FROM              NET ASSET            RATIO OF NET
                 VALUE AT     NET         UNREALIZED     INCOME FROM    NET     IN EXCESS VALUE AT             EXPENSES TO
                 BEGINNING INVESTMENT    GAIN (LOSS)     INVESTMENT  INVESTMENT  OF NET      END      TOTAL    AVERAGE NET
                 OF PERIOD   INCOME   ON INVESTMENTS (a) OPERATIONS    INCOME    INCOME   OF PERIOD RETURN (b)    ASSETS
                 --------- ---------- ------------------ ----------- ---------- --------- --------- ---------- ------------
<S>              <C>       <C>        <C>                <C>         <C>        <C>       <C>       <C>        <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
Shares..........  $10.00    $0.4341        $(0.2455)       $0.1886    ($0.4486)      --     $9.74      1.88%       0.46%
1994-
Administration
Shares..........   10.00     0.4211         (0.2572)        0.1639     (0.4239)      --      9.74      1.63        0.71
1993-
Institutional
Shares..........   10.04     0.4397         (0.0376)        0.4021     (0.4397)  (0.0024)   10.00      4.13        0.45
1993-
Administration
Shares (d)......   10.02     0.2146         (0.0173)        0.1973     (0.2146)  (0.0027)   10.00      2.01(f)     0.70(e)
1992-
Institutional
Shares..........   10.03     0.5599         (0.0029)        0.5570     (0.5470)      --     10.04      6.12        0.42
FOR THE PERIOD JULY 17, 1991 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1991-Institu-
tional Shares...   10.00     0.1531          0.0322         0.1853     (0.1553)      --     10.03      2.14(f)     0.20(e)
<CAPTION>
                                                              RATIOS
                                                           ASSUMING NO
                                                            WAIVER OF
                                                          ADVISORY FEES
                                                            OR EXPENSE
                                                            LIMITATION
                                                     ------------------------
                 RATIO OF NET                NET                 RATIO OF NET
                  INVESTMENT              ASSETS AT   RATIO OF    INVESTMENT
                  INCOME TO   PORTFOLIO      END     EXPENSES TO  INCOME TO
                 AVERAGE NET  TURNOVER    OF PERIOD  AVERAGE NET AVERAGE NET
                    ASSETS     RATE(c)    (IN 000'S)   ASSETS       ASSETS
                 ------------ ----------- ---------- ----------- ------------
<S>              <C>          <C>         <C>        <C>         <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
Shares..........     4.38%      37.81%    $ 942,523     0.49%        4.35%
1994-
Administration
Shares..........     4.27       37.81         6,960     0.74         4.24
1993-
Institutional
Shares..........     4.36      103.74     2,760,871     0.48         4.33
1993-
Administration
Shares (d)......     3.81(e)   103.74         5,326     0.73(e)      3.78(e)
1992-
Institutional
Shares..........     5.61      286.40     2,145,064     0.55         5.48
FOR THE PERIOD JULY 17, 1991 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1991-Institu-
tional Shares...     7.31(e)   145.67(e)    239,642     1.02(e)      6.49(e)
</TABLE>
- ----
(a) Includes balancing effect of calculating per share amounts.
(b) Assumes investment at the net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(c) Includes the effect of mortgage dollar roll transactions.
(d) Administration share activity commenced on April 15, 1993.
(e) Annualized.
(f) Not annualized.
 
                                       8
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a high level of
current income, consistent with low volatility of principal. The Fund seeks to
achieve its objective through investment in securities issued or guaranteed by
the U.S. Government, its agencies or instrumentalities. Under normal
circumstances, at least 65% of the Fund's total assets will consist of
adjustable rate mortgage pass-through securities and other mortgage securities
with periodic interest rate resets, which are issued or guaranteed by the U.S.
Government, its agencies or instrumentalities. The primary issuers or
guarantors of such securities currently include the Government National
Mortgage Association ("Ginnie Mae"), the Federal National Mortgage Association
("Fannie Mae") and the Federal Home Loan Mortgage Corporation ("Freddie Mac"),
although the Fund may invest in securities issued or guaranteed by other
agencies or instrumentalities in the future. The Fund may invest up to 35% of
its total assets in other Mortgage-Backed Securities and other obligations
issued or guaranteed by the U.S. Government, its agencies or instrumentalities,
as well as repurchase agreements collateralized by U.S. Government securities.
The Fund may, for temporary defensive purposes, hold or invest more than 35% of
its total assets in cash, U.S. Treasury securities or high quality money market
instruments, including commercial paper, bankers' acceptances, repurchase
agreements or other debt obligations with a remaining maturity of one year or
less. Under normal circumstances, substantially all of the Fund's assets will
be invested in securities issued or guaranteed by the U.S. Government, its
agencies or instrumentalities.
 
  The Fund may also employ certain active management techniques to hedge the
interest rate risks associated with the Fund's portfolio securities, to
minimize fluctuation in its net asset value and to enhance its return. These
techniques include, but are not limited to, futures contracts (including
options on futures), mortgage and interest rate swaps and interest rate floors,
caps and collars. The Fund may also employ other investment techniques to
enhance returns, such as loans of portfolio securities, mortgage dollar rolls
and repurchase agreements.
 
  The Fund will maintain a maximum duration approximately equal to that of a
two-year U.S. Treasury security. Under normal interest rate conditions, the
Fund's actual duration is expected to be in a range approximately equal to that
of a 6-month to one-year U.S. Treasury security. The Fund's duration is a
measure of the price sensitivity of the portfolio, including expected cash flow
and mortgage prepayments under a wide range of interest rate scenarios.
Maturity measures only the time until final payment is due on a bond or other
debt security; it takes no account of the pattern of a security's cash flows
over time, including how cash flow is affected by prepayments and by changes in
interest rates. In computing the duration of its portfolio, the Fund will have
to estimate the duration of obligations that are subject to prepayment or
redemption by the issuer taking into account the influence of interest rates on
prepayments and coupon flows. This method of computing duration is known as
option-adjusted duration. The Fund may use various techniques to shorten or
lengthen the option-adjusted duration of its portfolio, including the use of
futures contracts (including options on futures), the acquisition of debt
obligations at a premium or discount, mortgage and interest rate swaps and
interest rate floors, caps and collars.
 
  When interest rates decline, the value of a portfolio invested in fixed rate
debt securities can be expected to rise. Conversely, when interest rates rise,
the value of a portfolio invested in fixed rate debt securities can be expected
to decline. In contrast, since interest rates on adjustable rate mortgage loans
are reset periodically, yields of portfolio securities representing interests
in such loans will gradually align themselves to reflect changes in market
interest rates, causing the value of such securities to fluctuate less
dramatically in response to interest rate fluctuations than would fixed rate
debt securities. The
 
                                       9
<PAGE>
 
Investment Adviser expects the Fund's net asset value to be relatively stable
during normal market conditions. This is because the Fund's portfolio will
consist primarily of guaranteed adjustable rate Mortgage-Backed Securities and
because the Fund will maintain a maximum option-adjusted duration approximately
equal to that of a two-year U.S. Treasury security and will utilize certain
interest rate hedging techniques. However, a sudden and extreme increase in
prevailing interest rates may cause a decline in the Fund's net asset value.
Conversely, a sudden and extreme decline in interest rates could result in an
increase in the Fund's net asset value.
 
  Except as otherwise stated under "Investment Restrictions," the Fund's
investment objective and policies are not fundamental and may be changed
without a vote of shareholders. If there is a change in the Fund's investment
objective, shareholders should consider whether the Fund remains an appropriate
investment in light of their then current financial positions and needs. There
can be no assurance that the Fund will be successful in achieving its
investment objective. An investment in shares of the Fund does not constitute a
complete investment program. Investors may wish to complement an investment in
the Fund with other types of investments.
 
                               INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Funds Management, L.P., an
affiliate of Goldman Sachs. The management services provided by the Investment
Adviser are subject to the general supervision of the Trust's Board of
Trustees. The Investment Adviser and its affiliates serve a wide range of
clients including private and public pension funds, endowments, foundations,
banks, thrifts, insurance companies, corporations, and private investors and
family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and market expertise
of Goldman Sachs, whose investment research effort is one of the largest in the
industry. The in-depth information and analyses generated by Goldman Sachs'
research analysts, economists and portfolio strategists are available to the
Investment Adviser.
 
                                       10
<PAGE>
 
                 ADJUSTABLE AND FIXED RATE MORTGAGE LOANS AND 
           MORTGAGE-BACKED SECURITIES IN WHICH THE FUND WILL INVEST
 
THE NATURE OF ADJUSTABLE AND FIXED RATE MORTGAGE LOANS
 
  The following is a general description of the adjustable and fixed rate
mortgage loans which may be expected to underlie the Mortgage-Backed Securities
in which the Fund will invest. Since a wide variety of mortgage loans are
available to borrowers, the actual mortgage loans underlying any particular
issue of Mortgage-Backed Securities may differ materially from those described
below. In addition, the Fund will be permitted to invest in Mortgage-Backed
Securities that become available in the future to the extent such investments
are consistent with its investment objective and policies.
 
  ADJUSTABLE RATE MORTGAGE LOANS ("ARMS"). ARMs included in a mortgage pool
will generally provide for a fixed initial mortgage interest rate for a
specified period of time. Thereafter, the interest rates (the "Mortgage
Interest Rates") may be subject to periodic adjustment based on changes in the
applicable index rate (the "Index Rate"). The adjusted rate would be equal to
the Index Rate plus a gross margin, which is a fixed percentage spread over the
Index Rate established for each ARM at the time of its origination.
 
  Adjustable interest rates can cause payment increases that some mortgagors
may find difficult to make. However, certain ARMs may provide that the Mortgage
Interest Rate may not be adjusted to a rate above an applicable lifetime
maximum rate or below an applicable lifetime minimum rate for such ARM. Certain
ARMs may also be subject to limitations on the maximum amount by which the
Mortgage Interest Rate may adjust for any single adjustment period (the
"Maximum Adjustment"). Other ARMs ("Negatively Amortizing ARMs") may provide
instead or as well for limitations on changes in the monthly payment on such
ARMs. Limitations on monthly payments can result in monthly payments which are
greater or less than the amount necessary to amortize a Negatively Amortizing
ARM by its maturity at the Mortgage Interest Rate in effect in any particular
month. In the event that a monthly payment is not sufficient to pay the
interest accruing on a Negatively Amortizing ARM, any such excess interest is
added to the principal balance of the loan, causing negative amortization, and
will be repaid through future monthly payments. It may take borrowers under
Negatively Amortizing ARMs longer periods of time to achieve equity and may
increase the likelihood of default by such borrowers. In the event that a
monthly payment exceeds the sum of the interest accrued at the applicable
Mortgage Interest Rate and the principal payment which would have been
necessary to amortize the outstanding principal balance over the remaining term
of the loan, the excess (or "accelerated amortization") further reduces the
principal balance of the ARM. Negatively Amortizing ARMs do not provide for the
extension of their original maturity to accommodate changes in their Mortgage
Interest Rate. As a result, unless there is a periodic recalculation of the
payment amount (which there generally is), the final payment may be
substantially larger than the other payments. These limitations on periodic
increases in interest rates and on changes in monthly payments protect
borrowers from unlimited interest rate and payment increases.
 
  There are two main categories of indices which provide the basis for rate
adjustments on ARMs: those based on U.S. Treasury securities and those derived
from a calculated measure such as a cost of funds index or a moving average of
mortgage rates. Commonly utilized indices include the one-year, three-year and
five-year constant maturity Treasury rates, the three-month Treasury Bill rate,
the 180-day Treasury Bill rate, rates on longer-term Treasury securities, the
11th District Federal Home Loan Bank Cost of Funds, the National Median Cost of
Funds, the one-month, three-month, six-month or one year London Interbank
Offered Rate ("LIBOR"), the prime rate of a specific bank, or commercial paper
rates. Some indices, such as the one-year constant maturity Treasury rate,
closely mirror changes in market
 
                                       11
<PAGE>
 
interest rate levels. Others, such as the 11th District Federal Home Loan Bank
Cost of Funds index, tend to lag behind changes in market rate levels and tend
to be somewhat less volatile. The degree of volatility in the market value of
the Fund's portfolio and therefore in the net asset value of the Fund's shares
will be a function of the length of the interest rate reset periods and the
degree of volatility in the applicable indices.
 
  FIXED RATE MORTGAGE LOANS. Generally, fixed rate mortgage loans included in a
mortgage pool (the "Fixed Rate Mortgage Loans") will bear simple interest at
fixed annual rates and have original terms to maturity ranging from 5 to 40
years. Fixed Rate Mortgage Loans generally provide for monthly payments of
principal and interest in substantially equal installments for the term of the
mortgage note in sufficient amounts to fully amortize principal by maturity,
although certain fixed rate mortgage loans provide for a large final "balloon"
payment upon maturity.
 
  REGULATION OF MORTGAGE LOANS. Mortgage loans are subject to a variety of
state and federal laws and regulations designed to protect mortgagors, which
may impair the ability of the mortgage lender to enforce its rights under the
mortgage documents. These laws and regulations include legal restraints on
foreclosures, homeowner rights of redemption after foreclosure, federal and
state bankruptcy and debtor relief laws, restrictions on enforcement of
mortgage loan "due on sale" clauses and state usury laws. Even though the Fund
may invest in Mortgage-Backed Securities issued or guaranteed by the U.S.
Government, its agencies or instrumentalities, these regulations may adversely
affect the Fund's investments by delaying the Fund's receipt of payments
derived from principal of or interest on mortgage loans affected by such laws
and regulations.
 
MORTGAGE-BACKED SECURITIES
 
  CHARACTERISTICS OF MORTGAGE-BACKED SECURITIES. Mortgage-Backed Securities are
securities that directly or indirectly represent participations in, or are
collateralized by and payable from, mortgage loans secured by real property.
The investment characteristics of adjustable and fixed rate Mortgage-Backed
Securities differ from those of traditional fixed income securities. The major
differences include the payment of interest and principal on Mortgage-Backed
Securities on a more frequent (usually monthly) schedule, and the possibility
that principal may be prepaid at any time due to prepayments on the underlying
mortgage loans or other assets. These differences can result in significantly
greater price and yield volatility than is the case with traditional fixed
income securities. As a result, if the Fund purchases Mortgage-Backed
Securities at a premium, a faster than expected prepayment rate will reduce
both the market value and the yield to maturity from those which were
anticipated. A prepayment rate that is slower than expected will have the
opposite effect of increasing yield to maturity and market value. Conversely,
if the Fund purchases Mortgage-Backed Securities at a discount, faster than
expected prepayments will increase, while slower than expected prepayments will
reduce, yield to maturity and market value. The Investment Adviser will seek to
manage these potential risks and benefits by investing in a variety of
Mortgage-Backed Securities and by using certain hedging techniques. See "Other
Investments and Practices."
 
  Prepayments on a pool of mortgage loans are influenced by a variety of
factors, including economic conditions, changes in mortgagors' housing needs,
job transfers, unemployment, mortgagors' net equity in the mortgaged properties
and servicing decisions. The timing and level of prepayments cannot be
 
                                       12
<PAGE>
 
predicted. Generally, however, prepayments on adjustable rate mortgage loans
and fixed rate mortgage loans will increase during a period of falling mortgage
interest rates and decrease during a period of rising mortgage interest rates.
Accordingly, the amounts of prepayments available for reinvestment by the Fund
are likely to be greater during a period of declining mortgage interest rates.
If general interest rates also decline, such prepayments are likely to be
reinvested at lower interest rates than the Fund was earning on the Mortgage-
Backed Securities that were prepaid.
 
GUARANTEED MORTGAGE-BACKED SECURITIES IN WHICH THE FUND INVESTS
 
  All of the Fund's investments in Mortgage-Backed Securities will be issued or
guaranteed by the U.S. Government or one of its agencies or instrumentalities,
including but not limited to, Ginnie Mae, Fannie Mae and Freddie Mac. Ginnie
Mae securities are backed by the full faith and credit of the U.S. Government,
which means that the U.S. Government guarantees that the interest and principal
will be paid when due. Fannie Mae securities and Freddie Mac securities are not
backed by the full faith and credit of the U.S. Government; however, the
ability of these agencies to borrow from the U.S. Treasury makes their
securities high quality securities with minimal credit risks. There are several
types of guaranteed Mortgage-Backed Securities currently available, including
guaranteed mortgage pass-through certificates and multiple-class securities,
which include guaranteed Real Estate Mortgage Investment Conduit ("REMIC")
pass-through certificates and stripped Mortgage-Backed Securities. The Fund
will be permitted to invest in other types of Mortgage-Backed Securities that
may be available in the future to the extent investment in such securities is
consistent with its investment policies and objective, which require the Fund
to invest primarily in guaranteed adjustable rate Mortgage-Backed Securities.
 
1. GUARANTEED MORTGAGE PASS-THROUGH SECURITIES
 
  GINNIE MAE CERTIFICATES. Ginnie Mae is a wholly-owned corporate
instrumentality of the United States. Ginnie Mae is authorized to guarantee the
timely payment of the principal of and interest on certificates that are based
on and backed by a pool of mortgage loans insured by the Federal Housing
Administration ("FHA Loans"), or guaranteed by the Veterans Administration ("VA
Loans"), or by pools of other eligible mortgage loans. In order to meet its
obligations under any guaranty, Ginnie Mae is authorized to borrow from the
United States Treasury in an unlimited amount.
 
  FANNIE MAE CERTIFICATES. Fannie Mae is a stockholder-owned corporation
chartered under an act of the United States Congress. Each Fannie Mae
Certificate is issued and guaranteed by Fannie Mae and represents an undivided
interest in a pool of mortgage loans (a "Pool") formed by Fannie Mae. Each Pool
consists of residential mortgage loans ("Mortgage Loans") either previously
owned by Fannie Mae or purchased by it in connection with the formation of the
Pool. The Mortgage Loans may be either conventional Mortgage Loans (i.e., not
insured or guaranteed by any U.S. Government agency) or Mortgage Loans that are
either insured by the Federal Housing Administration ("FHA") or guaranteed by
the Veterans Administration ("VA"). However, the mortgage loans in Fannie Mae
Pools are primarily conventional Mortgage Loans. The lenders originating and
servicing the Mortgage Loans are subject to certain eligibility requirements
established by Fannie Mae.
 
  Fannie Mae has certain contractual responsibilities. With respect to each
Pool, Fannie Mae is obligated to distribute scheduled monthly installments of
principal and interest after Fannie Mae's servicing and guaranty fee, whether
or not received, to Certificate holders. Fannie Mae also is obligated
 
                                       13
<PAGE>
 
to distribute to holders of Certificates an amount equal to the full principal
balance of any foreclosed Mortgage Loan, whether or not such principal balance
is actually recovered. The obligations of Fannie Mae under its guaranty of the
Fannie Mae Certificates are obligations solely of Fannie Mae.
 
  FREDDIE MAC CERTIFICATES. Freddie Mac is a publicly-held U.S. Government
sponsored enterprise. The principal activity of Freddie Mac currently is the
purchase of first lien, conventional, residential mortgage loans and
participation interests in such mortgage loans and their resale in the form of
mortgage securities, primarily Freddie Mac Certificates. A Freddie Mac
Certificate represents a pro rata interest in a group of mortgage loans or
participations in mortgage loans (a "Freddie Mac Certificate group") purchased
by Freddie Mac.
 
  Freddie Mac guarantees to each registered holder of a Freddie Mac Certificate
the timely payment of interest at the rate provided for by such Freddie Mac
Certificate (whether or not received on the underlying loans). Freddie Mac also
guarantees to each registered Certificate-holder ultimate collection of all
principal of the related mortgage loans, without any offset or deduction, but
does not, generally, guarantee the timely payment of scheduled principal. The
obligations of Freddie Mac under its guaranty of Freddie Mac Certificates are
obligations solely of Freddie Mac.
 
  CONVENTIONAL MORTGAGE LOANS. The conventional mortgage loans underlying the
Freddie Mac and Fannie Mae Certificates will consist of adjustable rate or
fixed rate mortgage loans with original terms to maturity of between five and
thirty years. Substantially all of these mortgage loans are secured by first
liens on one- to four-family residential properties or multi-family projects.
Each mortgage loan must meet the applicable standards set forth in the law
creating Freddie Mac or Fannie Mae. A Freddie Mac Certificate group may include
whole loans, participation interests in whole loans and undivided interests in
whole loans and participations comprising another Freddie Mac Certificate
group.
 
2. MULTIPLE CLASS PASS-THROUGH SECURITIES AND COLLATERALIZED MORTGAGE
OBLIGATIONS
 
  The Fund may also invest in multiple class securities issued by U.S.
Government agencies and instrumentalities such as Fannie Mae or Freddie Mac,
including guaranteed collateralized mortgage obligations ("CMOs") and REMIC
pass-through or participation certificates. A REMIC is a CMO that qualifies for
special tax treatment under the Internal Revenue Code of 1986, as amended (the
"Code"), and invests in certain mortgages principally secured by interests in
real property and other permitted investments.
 
  CMOs and guaranteed REMIC pass-through certificates ("REMIC Certificates")
issued by Fannie Mae and Freddie Mac are types of multiple class pass-through
securities. Investors may purchase beneficial interests in REMICs, which are
known as "regular" interests or "residual" interests. The Fund does not intend
to purchase residual interests in REMICs. The REMIC Certificates represent
beneficial ownership interests in a REMIC trust, generally consisting of
mortgage loans or Fannie Mae, Freddie Mac or Ginnie Mae guaranteed mortgage
pass-through certificates (the "Mortgage Assets"). The obligations of Fannie
Mae or Freddie Mac under their respective guaranty of the REMIC Certificates
are obligations solely of Fannie Mae or Freddie Mac, respectively.
 
  Fannie Mae REMIC Certificates are issued and guaranteed as to timely
distribution of principal and interest by Fannie Mae. In addition, Fannie Mae
will be obligated to distribute the principal balance of each class of REMIC
Certificates in full, whether or not sufficient funds are otherwise available.
 
                                       14
<PAGE>
 
  For Freddie Mac REMIC Certificates, Freddie Mac guarantees the timely payment
of interest, and also guarantees the payment of principal as payments are
required to be made on the underlying mortgage participation certificates
("PCs"). PCs represent undivided interests in specified level payment,
residential mortgages or participations therein purchased by Freddie Mac and
placed in a PC pool. With respect to principal payments on PCs, Freddie Mac
generally guarantees ultimate collection of all principal of the related
mortgage loans without offset or deduction. Freddie Mac also guarantees timely
payment of principal on certain PCs.
 
  CMOs and REMIC Certificates are issued in multiple classes. Each class of
CMOs or REMIC Certificates, often referred to as a "tranche," is issued at a
specific adjustable or fixed interest rate and must be fully retired no later
than its final scheduled distribution date. Principal prepayments on the
Mortgage Loans or the Mortgage Assets underlying the CMOs or REMIC Certificates
may cause some or all of the classes of CMOs or REMIC Certificates to be
retired substantially earlier than their final distribution dates. Generally,
interest is paid or accrues on all classes of CMOs or REMIC Certificates on a
monthly basis.
 
  The principal of and interest on the Mortgage Assets may be allocated among
the several classes of CMOs or REMIC Certificates in various ways. In certain
structures (known as "sequential pay" CMOs or REMIC Certificates), payments of
principal, including any principal prepayments, on the Mortgage Assets
generally are applied to the classes of CMOs or REMIC Certificates in the order
of their respective final distribution dates. Thus no payment of principal will
be made on any class of sequential pay CMOs or REMIC Certificates until all
other classes having an earlier final distribution date have been paid in full.
 
  Additional structures of CMOs and REMIC Certificates include, among others,
"parallel pay" CMOs and REMIC Certificates. Parallel pay CMOs or REMIC
Certificates are those which are structured to apply principal payments and
prepayments of the Mortgage Assets to two or more classes concurrently on a
proportionate or disproportionate basis. These simultaneous payments are taken
into account in calculating the final distribution date of each class.
 
  A wide variety of REMIC Certificates may be issued in the parallel pay or
sequential pay structures. These securities include accrual certificates (also
known as "Z-Bonds"), which only accrue interest at a specified rate until all
other certificates having an earlier final distribution date have been retired
and are converted thereafter to an interest-paying security, and planned
amortization class ("PAC") certificates, which are parallel pay REMIC
Certificates which generally require that specified amounts of principal be
applied on each payment date to one or more classes of REMIC Certificates (the
"PAC Certificates"), even though all other principal payments and prepayments
of the Mortgage Assets are then required to be applied to one or more other
classes of the Certificates. The scheduled principal payments for the PAC
Certificates generally have the highest priority on each payment date after
interest due has been paid to all classes entitled to receive interest
currently. Shortfalls, if any, are added to the amount payable on the next
payment date. The PAC Certificate payment schedule is taken into account in
calculating the final distribution date of each class of PAC. In order to
create PAC tranches, one or more tranches generally must be created that absorb
most of the volatility in the underlying mortgage assets. These tranches tend
to have market prices and yields that are much more volatile than the PAC
classes.
 
3. STRIPPED MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in stripped mortgage-backed securities ("SMBS"), which
are derivative multiclass mortgage securities. The Fund may only invest in SMBS
issued or guaranteed by the U.S. Government, its agencies or instrumentalities.
 
                                       15
<PAGE>
 
  SMBS are usually structured with two classes that receive different
proportions of the interest and principal distributions from a pool of Mortgage
Assets. A common type of SMBS will have one class receiving all of the interest
from the Mortgage Assets, while the other class will receive all of the
principal. However, in some instances, one class will receive some of the
interest and most of the principal while the other class will receive most of
the interest and the remainder of the principal. If the underlying Mortgage
Assets experience greater than anticipated prepayments of principal, the Fund
may fail to fully recoup its initial investment in these securities. Although
the market for such securities is increasingly liquid, certain SMBS may not be
readily marketable and will be considered illiquid for purposes of the Fund's
limitation on investments in illiquid securities. The market value of the class
consisting entirely of principal payments generally is unusually volatile in
response to changes in interest rates. The yields on a class of SMBS that
receives all or most of the interest from Mortgage Assets are generally higher
than prevailing market yields on other Mortgage-Backed Securities because their
cash flow patterns are more volatile and there is a greater risk that the
initial investment will not be fully recouped. The Investment Adviser will seek
to manage these risks (and potential benefits) by investing in a variety of
such securities and by using certain hedging techniques. See "Other Investments
and Practices."
 
                 YIELD, MARKET VALUE AND RISK CONSIDERATIONS OF
                           MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in certain Mortgage-Backed Securities, such as interest-
only and principal-only SMBS, that are extremely sensitive to changes in
prepayments and interest rates. Even though such securities have been issued or
guaranteed by an agency or instrumentality of the U.S. Government, under
certain interest rate or prepayment rate scenarios, the Fund may fail to fully
recover its investment in such securities.
 
  The investment characteristics of Mortgage-Backed Securities differ from
those of traditional fixed income securities. The major differences typically
include more frequent interest and principal payments, usually monthly, and the
possibility that unscheduled prepayments of principal may be made at any time.
Prepayment rates are influenced by changes in current interest rates and a
variety of economic, geographic, social and other factors and cannot be
predicted with certainty. As with fixed rate mortgage loans, adjustable rate
mortgage loans may be subject to a greater prepayment rate in a declining
interest rate environment. The yields to maturity of the Mortgage-Backed
Securities in which the Fund invests will be affected by the actual rate of
payment (including prepayments) of principal of the underlying mortgage loans.
The mortgage loans underlying such securities generally may be prepaid at any
time without penalty. In a fluctuating interest rate environment, a predominant
factor affecting the prepayment rate on a pool of mortgage loans is the
difference between the interest rates on the mortgage loans and prevailing
mortgage loan interest rates (giving consideration to the cost of any
refinancing). In general, if interest rates on new mortgage loans fall
sufficiently below the interest rates existing on fixed rate mortgage loans
underlying mortgage pass-through securities, the rate of prepayment would be
expected to increase. Conversely, if mortgage loan interest rates rise above
the interest rates on the fixed rate mortgage loans underlying the mortgage
pass-through securities, the rate of prepayment may be expected to decrease.
 
  The rate of principal prepayments with respect to ARMs has fluctuated in
recent years. As is the case with fixed rate mortgage loans, ARMs may be
subject to a greater rate of principal prepayments in a declining interest rate
environment. For example, if prevailing interest rates fall significantly, ARMs
could
 
                                       16
<PAGE>
 
be subject to higher prepayment rates than if prevailing interest rates remain
constant because the availability of fixed rate mortgage loans at competitive
interest rates may encourage mortgagors to refinance their ARMs to "lock-in" a
lower fixed interest rate. Conversely, if prevailing interest rates rise
significantly, ARMs may prepay at lower rates than if prevailing rates remain
at or below those in effect at the time such ARMs were originated due, for
example, to the unavailability of lower rate alternatives. As with fixed rate
mortgages, there can be no certainty as to the rate of prepayments on the ARMs
in either stable or changing interest rate environments. In addition, there can
be no certainty as to whether increases in the principal balances of the ARMs
due to the addition of deferred interest may result in a default rate higher
than that on ARMs that do not provide for negative amortization. Other factors
affecting prepayment of ARMs include changes in mortgagors' housing needs, job
transfers, unemployment, mortgagors' net equity in the mortgage properties and
servicing decisions.
 
  The Fund's reinvestment of principal payments and prepayments received on a
mortgage pass-through security may be made at rates higher or lower than the
rate payable on such security, thus affecting the return realized by the Fund.
In addition, the receipt of interest payments monthly rather than semi-annually
by the Fund has a compounding effect that may increase the yield to the Fund
relative to debt obligations that pay interest semi-annually. Due to these
factors, Mortgage-Backed Securities may also be less effective than U.S.
Treasury securities of similar maturity at maintaining yields during periods of
changing interest rates. Prepayments may have a disproportionate effect on
certain Mortgage-Backed Securities such as SMBS and certain other multiple
class pass-through securities. The Fund may purchase Mortgage-Backed Securities
at a premium or at a discount.
 
  RISKS ASSOCIATED WITH DERIVATIVE MORTGAGE-BACKED SECURITIES. Derivative
Mortgage-Backed Securities are subject to different combinations of interest
rate and/or prepayment risks. In addition, particular derivative securities may
be leveraged such that their exposure (i.e., price sensitivity) to interest
rate and/or prepayment risk is magnified. The Investment Adviser may use
derivative Mortgage-Backed Securities and other derivative securities
consistent with the Fund's investment objective for a variety of purposes
including adjusting the average duration or interest rate sensitivity of the
Fund's portfolio or attempting to enhance the Fund's total return. The
Investment Adviser manages the risks and benefits of derivative Mortgage-Backed
Securities and other derivative securities by prudent analysis, selection and
monitoring of such securities included in the Fund's portfolio.
 
  The risk of faster than anticipated prepayments generally adversely affects
interest-only securities (IOs), super floaters and premium priced Mortgage-
Backed Securities. The risk of slower than anticipated prepayments generally
adversely affects principal-only securities (POs), floating rate securities
subject to interest rate caps, support tranches and discount priced Mortgage-
Backed Securities.
 
  RISKS ASSOCIATED WITH OTHER DERIVATIVE FLOATING RATE SECURITIES. Other types
of floating rate derivative securities present more complex types of interest
rate risks. For example, range floaters are subject to the risk that the coupon
will be reduced to below market rates if a designated interest rate floats
outside of a specified interest rate band or collar. Dual index or yield curve
floaters are subject to lower prices in the event of an unfavorable change in
the spread between two designated interest rates.
 
                                       17
<PAGE>
 
                        OTHER INVESTMENTS AND PRACTICES
 
  INVERSE FLOATING RATE SECURITIES. The Fund may invest in leveraged inverse
floating rate debt instruments ("inverse floaters"). The interest rate on an
inverse floater resets in the opposite direction from the market rate of
interest to which the inverse floater is indexed. An inverse floater may be
considered to be leveraged to the extent that its interest rate varies by a
magnitude that exceeds the magnitude of the change in the index rate of
interest. The higher degree of leverage inherent in inverse floaters is
associated with greater volatility in their market values. Accordingly, the
duration of an inverse floater may exceed its stated final maturity. Certain
inverse floaters may be deemed to be illiquid securities for purposes of the
Fund's 15% limitation on investments in such securities.
 
  OTHER INVESTMENTS. The Fund may also invest in other instruments including
obligations of the United States, notes, bonds, and discount notes of other
U.S. Government agencies or instrumentalities, including but not limited to:
Federal National Mortgage Association, Government National Mortgage
Association, Federal Home Loan Mortgage Corporation, Federal Home Loan Banks,
Bank for Cooperatives, Farm Credit Banks, Tennessee Valley Authority, Federal
Financing Bank, Small Business Administration and Federal Agricultural Mortgage
Corporation.
 
  INTEREST RATE SWAPS, MORTGAGE SWAPS, CAPS, FLOORS AND COLLARS. The Fund may
enter into interest rate swaps and mortgage swaps for hedging purposes and to
increase total return. The Fund may also enter into other types of interest
rate swap arrangements such as caps, floors and collars. Interest rate swaps
involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, e.g., an exchange of floating rate
payments for fixed rate payments. Mortgage swaps are similar to interest rate
swaps in that they represent commitments to pay and receive interest. The
notional principal amount, however, is tied to a reference pool or pools of
mortgages. The purchase of an interest rate cap entitles the purchaser, to the
extent that a specified index exceeds a predetermined interest rate, to receive
payment of interest on a notional principal amount from the party selling such
interest rate cap. The purchase of an interest rate floor entitles the
purchaser, to the extent that a specified index falls below a predetermined
interest rate, to receive payment of interest on a notional principal amount
from the party selling such interest rate floor. An interest rate collar is the
combination of a cap and a floor that preserves a certain return within a
predetermined range of interest rates. Since interest rate swaps, mortgage
swaps, caps, floors and collars are individually negotiated, the Fund expects
to achieve an acceptable degree of correlation between its portfolio
investments and its swap, cap, floor and collar positions entered into for
hedging purposes.
 
  The Fund will enter into interest rate swaps and mortgage swaps only on a net
basis, which means that the two payment streams are netted out, with the Fund
receiving or paying, as the case may be, only the net amount of the two
payments. Interest rate swaps and mortgage swaps do not involve the delivery of
securities, other underlying assets or principal. Accordingly, the risk of loss
with respect to interest rate swaps and mortgage swaps is limited to the net
amount of payments that the Fund is contractually obligated to make. If the
other party to an interest rate swap or mortgage swap defaults, the Fund's risk
of loss consists of the net amount of payments that the Fund is contractually
entitled to receive, if any. To the extent the net amount of an interest rate
swap or mortgage swap is held in a segregated account, consisting of cash and
liquid, high grade debt securities, the Fund and the Investment Adviser believe
that swaps do not constitute senior securities under the Investment Company Act
of 1940, as amended (the "Act") and, accordingly, will not treat them as being
subject to the Fund's borrowing restriction.
 
                                       18
<PAGE>
 
  The Fund will not enter into any interest rate swap, mortgage swap, or
interest rate cap, floor or collar transactions unless the unsecured commercial
paper, senior debt or claims paying ability of the other party is rated either
AA or A-1 or better by Standard & Poor's Ratings Group ("S&P") or Aa or P-1 or
better by Moody's Investors Service, Inc. ("Moody's"), or, if unrated by such
rating organizations, determined to be of comparable quality by the Investment
Adviser.
 
  The use of interest rate swaps and mortgage swaps, as well as interest rate
floors, caps and collars, is a highly specialized activity which involves
investment techniques and risks different from those associated with ordinary
portfolio securities transactions. If the Investment Adviser is incorrect in
its forecasts of market values and interest rates, the investment performance
of the Fund would be less favorable than it would have been if these investment
techniques were not used. The staff of the SEC considers interest rate swaps
and mortgage swaps, as well as interest rate caps, floors and collars, to be
illiquid securities for purposes of the Fund's 15% limitation on illiquid
investments.
 
  FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS.  To hedge against changes
in interest rates or securities prices or to seek to increase total return, the
Fund may purchase and sell various kinds of futures contracts, and purchase and
write call and put options on any of such futures contracts. The Fund will
engage in futures and related options transactions only for bona fide hedging
purposes as defined in regulations of the Commodity Futures Trading Commission
or to seek to increase total return to the extent permitted by such
regulations.
 
  The Fund may not purchase or sell futures contracts or purchase or sell
related options to increase total return, except for closing purchase or sale
transactions, if immediately thereafter the sum of the amount of initial margin
deposits and premiums paid on the Fund's outstanding positions in futures and
related options entered into for the purpose of seeking to increase total
return would exceed 5% of the market value of the Fund's net assets.
Transactions in futures contracts and options on futures involve brokerage
costs, require margin deposits and, in the case of contracts and options
obligating the Fund to purchase securities, require the Fund to segregate cash
and liquid, high-grade debt securities with a value equal to the amount of the
Fund's obligations.
 
  While transactions in futures contracts and options on futures may reduce
certain risks, such transactions themselves entail certain other risks. See
"Investment Objectives and Policies--Futures Contracts and Options on Futures
Contracts" in the Additional Statement. Thus, while the Fund may benefit from
the use of futures and options on futures, unanticipated changes in interest
rates or securities prices may result in a poorer overall performance for the
Fund than if it had not entered into any futures contracts or options
transactions. The loss incurred by the Fund in writing options on futures is
potentially unlimited and may exceed the amount of the premium received.
 
  The use of futures may increase the volatility of the Fund's net asset value.
The profitability of the Fund's trading in futures to increase total return
will depend on the Investment Adviser's ability to correctly analyze the
futures markets. In addition, because of the low margin deposits normally
required in futures trading, a relatively small price movement in a futures
contract may result in substantial losses to the Fund. Further, futures trading
may be illiquid, and exchanges may limit fluctuations in futures contract
prices during a single day.
 
                                       19
<PAGE>
 
  In the event of an imperfect correlation between a futures position and a
portfolio position which is intended to be protected, the desired protection
may not be obtained and the Fund may be exposed to risk of loss. Perfect
correlation between the Fund's futures positions and portfolio positions will
be impossible to achieve. The Fund's transactions in options and futures
contracts may be limited by the requirements of the Code, for qualification as
a regulated investment company.
 
  RISKS OF DERIVATIVE TRANSACTIONS.  The Fund's transactions in interest rate
and mortgage swaps, interest rate caps, floors and collars, futures and options
on futures involve certain risks, including a possible lack of correlation
between changes in the value of hedging instruments and the portfolio assets
being hedged, the potential illiquidity of the markets for derivative
instruments, the risks arising from the margin requirements and related
leverage factors associated with such transactions. The use of these management
techniques to seek to increase total return also involves the risk of loss if
the Investment Adviser is incorrect in its expectation of fluctuations in
securities prices or interest rates.
 
  LENDING OF PORTFOLIO SECURITIES. The Fund may also seek to increase its
income by lending portfolio securities. Under present regulatory policies, such
loans may be made to institutions, such as certain broker-dealers, and are
required to be secured continuously by collateral in cash, cash equivalents or
U.S. Government securities maintained on a current basis in an amount at least
equal to the market value of the securities loaned. Cash collateral may be
invested in cash equivalents. If the Investment Adviser determines to make
securities loans, the value of the securities loaned may not exceed 33 1/3% of
the value of the total assets of the Fund. See "Investment Restrictions" in the
Additional Statement. The Fund may experience a loss or delay in the recovery
of its securities if the institution with which it has engaged in a portfolio
loan transaction breaches its agreement with the Fund.
 
  WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase
securities on a when-issued basis. When-issued transactions arise when
securities are purchased by the Fund with payment and delivery taking place in
the future in order to secure what is considered to be an advantageous price
and yield to the Fund at the time of entering into the transaction. The Fund
may also purchase securities on a forward commitment basis. In a forward
commitment transaction, the Fund contracts to purchase securities for a fixed
price at a future date beyond customary settlement time. The Fund is required
to hold and maintain in a segregated account until the settlement date cash or
liquid, high-grade debt obligations in an amount sufficient to meet the
purchase price. Alternatively, the Fund may enter into offsetting contracts for
the forward sale of other securities that it owns. The purchase of securities
on a when-issued or forward commitment basis involves a risk of loss if the
value of the security to be purchased declines prior to the settlement date.
Although the Fund would generally purchase securities on a when-issued or
forward commitment basis with the intention of actually acquiring securities
for its portfolio, the Fund may dispose of a when-issued security or forward
commitment prior to settlement if the Investment Adviser deems it appropriate
to do so.
 
  MORTGAGE DOLLAR ROLLS. The Fund may enter into mortgage "dollar rolls" in
which the Fund sells securities for delivery in the current month and
simultaneously contracts with the same counterparty to repurchase similar (same
type, coupon and maturity), but not identical securities on a specified future
date. During the roll period, the Fund loses the right to receive principal and
interest paid on the securities sold. However, the Fund would benefit to the
extent of any difference between the price received for the securities sold and
the lower forward price for the future purchase (often referred to as the
"drop") or fee income plus the interest earned on the cash proceeds of the
securities sold until the settlement date
 
                                       20
<PAGE>
 
of the forward purchase. Unless such benefits exceed the income, capital
appreciation and gain or loss due to mortgage prepayments that would have been
realized on the securities sold as part of the mortgage dollar roll, the use of
this technique will diminish the investment performance of the Fund compared
with what such performance would have been without the use of mortgage dollar
rolls. All cash proceeds will be invested in instruments that are permissible
investments for the Fund. The Fund will hold and maintain in a segregated
account until the settlement date cash or liquid, high-grade debt securities in
an amount equal to the forward purchase price.
 
  For financial reporting and tax purposes, the Fund treats mortgage dollar
rolls as two separate transactions; one involving the purchase of a security
and a separate transaction involving a sale. The Fund does not currently intend
to enter into mortgage dollar rolls that are accounted for as a financing.
 
  Mortgage dollar rolls involve certain risks including the following: if the
broker-dealer to whom the Fund sells the security becomes insolvent, the Fund's
right to purchase or repurchase the mortgage-related securities subject to the
mortgage dollar roll may be restricted and the instrument which the Fund is
required to repurchase may be worth less than an instrument which the Fund
originally held. Successful use of mortgage dollar rolls will depend upon the
Investment Adviser's ability to manage its interest rate and mortgage
prepayments exposure. For these reasons, there is no assurance that mortgage
dollar rolls can be successfully employed.
 
  REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with
dealers in U.S. Government securities and member banks of the Federal Reserve
System which furnish collateral at least equal in value or market price to the
amount of their repurchase obligation. In a repurchase agreement, the Fund
purchases a debt security from a seller which undertakes to repurchase the
security at a specified resale price on an agreed future date (ordinarily a
week or less). The resale price generally exceeds the purchase price by an
amount which reflects an agreed-upon market interest rate for the term of the
repurchase agreement. The primary risk is that, if the seller defaults, the
Fund might suffer a loss to the extent that the proceeds from the sale of the
underlying securities and other collateral held by the Fund in connection with
the related repurchase agreement are less than the repurchase price. Repurchase
agreements maturing in more than seven days are considered by the Fund to be
illiquid. In addition, the Fund, together with other registered investment
companies having advisory agreements with the Investment Adviser or any of its
affiliates, may transfer uninvested cash balances into a single joint account,
the daily aggregate balance of which will be invested in one or more repurchase
agreements.
 
  ILLIQUID SECURITIES. The Fund will not invest more than 15% of its net assets
in securities which are illiquid, including securities that are not readily
marketable, repurchase agreements maturing in more than seven days, interest
rate and mortgage swaps, interest rate caps, floors and collars, certain SMBS
and securities that are restricted as to resale. However, a restricted security
is not considered to be illiquid if the Trustees of the Trust determine, based
upon the Investment Adviser's continuing review of the trading markets for the
specific restricted security, under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale under Rule 144A under the
Securities Act of 1933 is liquid. In addition, a repurchase agreement which by
its terms can be liquidated before its nominal fixed term on seven days or less
notice is regarded as a liquid instrument. Subject to the 15% limitation on
illiquid securities investments, the Fund may acquire U.S. Government
securities in a private placement.
 
                                       21
<PAGE>
 
  Since it is not possible to predict with assurance exactly how this market
for restricted securities sold and offered under Rule 144A will develop, the
Board of Trustees will carefully monitor the Fund's investments in these
securities, focusing on such important factors, among others, as valuation,
credit quality, liquidity and availability of information. This investment
practice could have the effect of increasing the level of illiquidity in the
Fund to the extent that qualified institutional buyers become for a time
uninterested in purchasing these restricted securities.
 
  OTHER INVESTMENT COMPANIES. The Fund reserves the right to invest up to 10%
of its total assets, calculated at the time of purchase, in the securities of
other investment companies, including business development companies and small
business investment companies. The Fund may not invest more than 5% of its
total assets in the securities of any one investment company or acquire more
than 3% of the voting securities of any other investment company. Pursuant to
an exemptive order obtained from the SEC, other investment companies in which
the Fund may invest include money market funds for which the Investment Adviser
or any of its affiliates serves as investment adviser. The Fund will indirectly
bear its proportionate share of any management fees and other expenses paid by
investment companies in which it invests in addition to the advisory fees paid
by the Fund. However, to the extent that the Fund invests in a money market
fund for which the Investment Adviser or any of its affiliates acts as adviser,
the advisory fees payable by the Fund to the Investment Adviser will be reduced
by an amount equal to the Fund's proportionate share of the advisory fees paid
by such money market fund to the Investment Adviser or any of its affiliates.
 
                            INVESTMENT RESTRICTIONS
 
  The Fund is subject to certain investment restrictions which, as described in
more detail in the Additional Statement, are fundamental policies that cannot
be changed without the approval of a majority of the outstanding shares of the
Fund. Among other restrictions, the Fund may not, with respect to 75% of its
total assets, purchase securities of any one issuer (other than securities
issued or guaranteed by the U.S. Government, its agencies or instrumentalities)
if more than 5% of its total assets would be invested in such issuer, or invest
more than 25% of its total assets in the securities of issuers (other than
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities) in any one industry. The Fund may borrow money but only as a
temporary measure for extraordinary or emergency purposes, provided that the
Fund maintains asset coverage of 300% for all such borrowings. As a matter of
non-fundamental policy, the Fund may not purchase securities while such
borrowings exceed 5% of the value of the Fund's total assets.
 
                               PORTFOLIO TURNOVER
 
  It is anticipated that the portfolio turnover rate of the Fund will vary from
year to year. The portfolio turnover rate is computed by dividing the lesser of
the amount of securities purchased or securities sold (excluding all securities
whose maturities at acquisition are one year or less) by the average monthly
value of such securities owned during the year. A 100% turnover rate would
occur, for example, if all of the securities held by the Fund were sold and
replaced within one year. The Investment Adviser will not consider the
portfolio turnover rate a limiting factor in making investment decisions for
the Fund consistent with the Fund's investment objective and portfolio
management policies. A higher rate of portfolio turnover results in increased
transaction costs to the Fund. The portfolio turnover rate includes the effect
of entering into mortgage dollar rolls.
 
                                       22
<PAGE>
 
                                   MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct and supervise the Fund's
daily business operations. The Additional Statement contains information as to
the identity of, and other information about, the Trustees and officers of the
Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Funds Management, L.P., One New York Plaza, New York, New York
10004, a Delaware limited partnership which is an affiliate of Goldman Sachs,
acts as the investment adviser of the Fund. Goldman Sachs Funds Management,
L.P. was registered as an investment adviser in 1990. As of January 31, 1995,
the Investment Adviser, together with its affiliates, acted as investment
adviser, administrator or distributor for approximately $48.7 billion in
assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Funds
Management, L.P., subject to the general supervision of the Board of Trustees,
manages the Fund's portfolio and provides for the administration of all of the
Fund's other affairs. It is the responsibility of the Investment Adviser to
make investment decisions for the Fund and to place purchase and sale orders
for the Fund's portfolio transactions. Such orders may be directed to any
broker including, to the extent and in the manner permitted by applicable law,
Goldman Sachs or its affiliates. Goldman Sachs has agreed to permit the Fund to
use the name "Goldman Sachs" or a derivative thereof as part of the Fund's name
for as long as the Investment Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Jonathan A. Beinner and Theodore T. Sotir.
Mr. Beinner specializes in investing in a particular type of security the Fund
may hold. Mr. Sotir helps with overall portfolio strategy and is a member of
the Investment Adviser's risk control team. Mr. Beinner joined the Investment
Adviser in 1990 and is currently a Vice President, after working in the trading
and arbitrage group of Franklin Savings Association. Mr. Sotir joined the
Investment Adviser in 1993 and is currently a Vice President, after working as
a portfolio manager at Fidelity Management Trust Company. Prior to joining
Fidelity, Mr. Sotir worked for Goldman Sachs in the mortgage securities
department for six years.
 
  As compensation for the services rendered to the Fund by the Investment
Adviser pursuant to the Investment Advisory Agreement, and the assumption by
the Investment Adviser of the expenses related thereto, the Fund pays the
Investment Adviser a fee, computed daily and payable monthly, at an annual rate
equal to 0.40% of the Fund's average daily net assets. For the fiscal year
ended October 31, 1994, the Fund paid an advisory fee to the Investment Adviser
equal to 0.40% of the Fund's average daily net assets.
 
  The Investment Adviser has voluntarily agreed to reduce or otherwise limit
certain expenses of the Fund (excluding advisory, distribution and service
fees, payments to Service Organizations (as defined below), taxes, interest and
brokerage and litigation, indemnification and other extraordinary expenses) to
 
                                       23
<PAGE>
 
the extent such expenses exceed 0.05% annually of the Fund's average net
assets. Such reductions or limits, if any, are calculated monthly on a
cumulative basis and may be discontinued or modified by the Investment Adviser
at its discretion at any time. The Investment Adviser has also agreed to reduce
its fees payable (to the extent of such fees) by the amount the Fund's expenses
would, absent the fee reduction, exceed the applicable expense limitations
imposed by state securities administrators. See "Management--Expenses" in the
Additional Statement.
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser, Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts and
other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities and instruments as
the Fund. Goldman Sachs and its affiliates will not have any obligation to make
available any information regarding their proprietary activities or strategies,
or the activities or strategies used for other accounts managed by them, for
the benefit of the management of the Fund and it is not anticipated that the
Investment Adviser will have access to proprietary information for the purpose
of managing the Fund. The results of the Fund's investment activities,
therefore, may differ from those of Goldman Sachs and its affiliates and it is
possible that the Fund could sustain losses during periods in which Goldman
Sachs and its affiliates and other accounts achieve significant profits on
their trading for proprietary or other accounts. From time to time, the Fund's
activities may be limited because of regulatory restrictions applicable to
Goldman Sachs and its affiliates, and/or their internal policies designed to
comply with such restrictions. See "Activities of Goldman Sachs and its
Affiliates and Other Accounts Managed by Goldman Sachs" in the Additional
Statement for further information.
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact Goldman
Sachs (as Transfer Agent) at the address or the telephone number set forth on
the inside front cover page of this Prospectus.
 
                                NET ASSET VALUE
 
  The net asset value per share is calculated by the Fund's custodian as of the
close of regular trading on the New York Stock Exchange (normally 3:00 p.m.
Chicago time, 4:00 p.m. New York time), immediately after determination of the
income to be declared as a dividend on each Business Day (as such term is
defined under "Additional Information"). Net asset value per share of each
class is calculated by determining the net assets attributable to each class
and dividing by the number of outstanding shares of that class.
 
                                       24
<PAGE>
 
  Investments in Mortgage-Backed Securities and other debt obligations are
valued at fair value, based on yield equivalents, a pricing matrix or other
sources, under valuation procedures established by the Trust's Board of
Trustees. Other portfolio securities for which accurate market quotations are
readily available are valued on the basis of quotations furnished by pricing
services or provided by dealers in such securities. Portfolio securities for
which accurate market quotations are not readily available are valued in
accordance with the Trust's valuation procedures. Debt obligations with a
remaining maturity of 60 days or less are valued at amortized cost. The Board
of Trustees has determined that the amortized cost of such securities
approximates fair market value.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish yield and average annual total return
in advertisements and communications to shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most recent
calendar quarter, assuming reinvestment of all dividends and distributions at
net asset value. The total return calculation assumes a complete redemption of
the investment at the end of the relevant period. The Fund may also from time
to time advertise total return on a cumulative, average, year-by-year or other
basis for various specified periods by means of quotations, charts, graphs or
schedules. In addition to the above, the Fund may from time to time advertise
its performance relative to certain performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value for the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided in
shareholder reports, the Fund may, in its discretion, from time to time make a
list of its holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of shares in existence. Because each class of shares may be subject
to different expenses, the yield, total return and distribution rate
calculations with respect to each class of shares of the Fund for the same
period will differ. Due to the fees payable under the Distribution Plan,
Service Plan and the Administration Plan, the investment performance, for any
period, of the Institutional Shares will always be higher than that of the
 
                                       25
<PAGE>
 
Class A Shares, Service Shares and the Administration Shares. The investment
performance of the Administration Shares will always be higher than that of the
Service Shares. The investment performance of the Class A Shares will be
affected by the payment of a sales charge. Without giving effect to sales
charges, the investment performance of Class A Shares will be identical to the
Administration Shares as long as Goldman Sachs continues to limit its fee under
the Distribution Plan to 0.25% of the average daily net assets attributable to
Class A Shares. See "Shares of the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement the Trustees are
authorized to issue an unlimited number of shares of beneficial interest, $.001
par value per share. The Trustees of the Trust are responsible for the overall
management and supervision of its affairs. The Trustees of the Trust have
authority under the Trust Agreement to create and classify shares of beneficial
interest in separate series, without further action by shareholders. As of the
date of this Prospectus, the Trustees have authorized shares of the Fund and
ten other series. Additional series may be added in the future. The Trustees
also have authority to classify or reclassify any series or portfolio of shares
into one or more classes. Pursuant thereto, the Trustees have authorized the
issuance of four classes of shares of the Fund. These classes are:
Institutional Shares, Administration Shares, Service Shares and Class A Shares.
As of October 31, 1994, no Service Shares or Class A Shares of the Fund were
outstanding.
 
  Each Institutional Share, Administration Share, Service Share and Class A
Share of the Fund represents an equal proportionate interest in the assets
belonging to the Fund. All Fund expenses are based on a percentage of the
Fund's aggregate average net assets, except that the respective fees under
Administration, Service and Distribution Plans relating to a particular class
will be borne exclusively by that class. It is contemplated that most
Administration Shares and Service Shares will be held in accounts of which the
record owner is a bank or other institution acting, directly or through an
agent, as nominee for its customers who are the beneficial owners of the shares
or another organization designated by such bank or institution. Administration
Shares and Service Shares will each be marketed only to such institutional
investors, at net asset value with no sales load. Institutional Shares may be
purchased for accounts in the name of an investor or institution that is not
compensated by the Fund for services provided to the institution's customers.
Administration Shares may be purchased for accounts held in the name of an
institution that provides certain account administration services to its
customers, including maintenance of account records and processing orders to
purchase, redeem or exchange Administration Shares. Administration Shares bear
the cost of account administration fees at the annual rate of up to 0.25% of
the average daily net assets of such Administration Shares. Service Shares may
be purchased for accounts held in the name of an institution that provides
certain account administration and shareholder liaison services to its
customers, including maintenance of account records and processing orders to
purchase, redeem or exchange Service Shares, responding to customer inquiries
and assisting customers with investment procedures. Service Shares bear the
cost of service fees at the annual rate of up to 0.50% of the average daily net
assets of such Service Shares. (Institutions that provide services to holders
of Administration or Service Shares are referred to in this Prospectus as
"Service Organizations"). Class A Shares of a Fund may be bought at net asset
value plus a sales charge of up to
 
                                       26
<PAGE>
 
1.5% of the purchase price through Goldman Sachs and certain investment
dealers, including members of the National Association of Securities Dealers,
Inc. ("NASD") and certain other financial service firms that have entered into
a sales agreement with Goldman Sachs ("Authorized Dealers"). The minimum
investment requirements, services, programs and purchase and redemption options
for shares purchased through a particular Authorized Dealer may be different
from those available to investors purchasing through other Authorized Dealers.
Class A Shares bear the cost of distribution and service fees at the annual
rate of up to 0.50% of the average daily net asset of such Class A Shares.
Goldman Sachs has agreed to limit the amount of the distribution and service
fees payable by the Fund to 0.25% of its average daily net assets attributable
to Class A Shares. Goldman Sachs has no current intention of modifying or
discontinuing such limitation, but may do so in the future at its discretion.
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration, Service and Class A
Shares) to its customers and thus receive different compensation with respect
to different classes of shares of the Fund. Administration Shares, Service
Shares and Class A Shares may each have certain exclusive voting rights on
matters relating to their respective plans. Shares of each class may be
exchanged only for shares of the same class in another fund and certain money
market funds sponsored by Goldman Sachs. The Fund may amend such policy in the
future. Dividends paid by the Fund, if any, with respect to each class of
shares will be calculated in the same manner, at the same time on the same day
and will be in the same amount, except for differences caused by the fact that
the respective fees under Administration, Service and Distribution Plans
relating to a particular class will be borne exclusively by that class.
Similarly, the net asset value per share will vary depending on the class of
shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or conversion rights.
 
  Under Massachusetts law, there is a remote possibility that shareholders of a
business trust could, under certain circumstances, be held personally liable as
partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
  Unless otherwise required by the Act, ordinarily it will not be necessary for
the Trust to hold annual meetings of shareholders. As a result, shareholders
may not consider each year the election of Trustees or the appointment of
independent accountants. Shareholders may remove a Trustee by the affirmative
vote of at least two-thirds of the Trust's outstanding shares and the Trustees
must promptly call a meeting
 
                                       27
<PAGE>
 
for such purpose when requested to do so in writing by the record holders of
not less than 10% of the outstanding shares of the Trust. Shareholders may,
under certain circumstances, communicate with other shareholders in connection
with requesting a special meeting of shareholders. The Board of Trustees,
however, will call a special meeting for the purpose of electing Trustees if,
at any time, less than a majority of Trustees holding office at the time were
elected by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue share
certificates. Instead, the Transfer Agent maintains a record of each
shareholder's ownership. Each shareholder receives confirmation of purchase and
redemption orders from the Transfer Agent. Shares and any dividends and
distributions paid by the Fund are reflected in account statements from the
Transfer Agent.
 
                                    TAXATION
 
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code and intends to continue to qualify for such treatment.
To qualify for treatment as a regulated investment company, the Fund must
satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
  Dividends paid by the Fund from net investment income, the excess of net
short-term capital gain over net long-term capital loss and original issue
discount or certain market discount income will be taxable to shareholders as
ordinary income. Dividends paid by the Fund from the excess of net long-term
capital gain over net short-term capital loss will be taxable as long-term
capital gains regardless of how long the shareholders have held their shares.
These tax consequences will apply regardless of whether distributions are
received in cash or reinvested in shares. Certain distributions paid by the
Fund in January of a given year may be taxable to shareholders as if received
the prior December 31. Shareholders will be informed annually about the amount
and character of distributions received from the Fund for federal income tax
purposes.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
when received even though the distribution represents a return of a portion of
the purchase price.
 
  Redemptions and exchanges of shares are taxable events on which a shareholder
may recognize a gain or loss.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on distributions, redemptions and
exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other shareholders
that are not U.S. persons under the Code are subject to different tax rules and
may be subject to nonresident alien withholding at the rate of 30% (or a lower
rate provided by an applicable tax treaty) on amounts treated as ordinary
dividends from the Fund.
 
                                       28
<PAGE>
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local or
foreign taxes on payments received from the Fund. A state income (and possibly
local income and/or intangible property) tax exemption is generally available
to the extent the Fund's distributions are derived from interest on (or, in the
case of intangibles taxes, the value of its assets is attributable to) certain
U.S. Government obligations, provided in some states that certain thresholds
for holdings of such obligations and/or reporting requirements are satisfied.
 
  Shareholders should consult their own tax advisers with respect to the
federal, state, local and foreign tax consequences of investing in the Fund in
their particular circumstances. See the Additional Statement for a further
discussion of certain tax consequences of investing in shares of the Fund.
 
                             ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at the meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days when
the Investment Adviser, The Northern Trust Company, State Street Bank and Trust
Company and the Federal Reserve Bank of New York are open for business, which
is Monday through Friday except for holidays. Such holidays currently are: New
Year's Day (observed), Martin Luther King Day, Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Columbus Day,
Thanksgiving and Christmas. On those days when one or more of such
organizations close early as a result of such day being a partial holiday or
otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                       29
<PAGE>
 
                                   DIVIDENDS
 
  The Fund intends to declare a daily dividend determined with the objective of
distributing the majority of net investment income while enhancing the
stability of principal. Such dividend will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially
all of the Fund's net investment income. From time to time a portion of such
dividends may constitute a return of capital. The Fund also intends that all
net realized long-term and short-term capital gains will be declared as a
dividend at least annually. In determining amounts of capital gains to be
distributed, capital losses including any available capital loss carryovers
from prior years will be offset against capital gains.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination is
made as of 3:00 p.m. Chicago time.
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case payment
will be made on the first Business Day of the succeeding month. Payment of
dividends with respect to capital gains, if any, when declared will be made in
additional shares of the Fund at the net asset value on the payment date,
unless cash distributions are elected. This election to receive dividends in
cash is initially made on the Account Information Form and may be changed upon
written notice to the Transfer Agent at any time prior to the record date for a
particular dividend or distribution. If cash dividends are elected with respect
to the Fund's monthly net investment income dividends then cash dividends must
also be elected with respect to the non-long term capital gains component, if
any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or unrealized appreciation of the Fund's portfolio securities. Therefore,
subsequent distributions (or portions thereof) on such shares may be taxable to
the investor even if the net asset value of the shares is, as a result of the
distributions, reduced below the cost of such shares and the distributions (or
portions thereof) represent a return of a portion of the purchase price.
 
                            REPORTS TO SHAREHOLDERS
 
  Institutional Shareholders will receive an annual report containing audited
financial statements and a semi-annual report. Each Institutional Shareholder
will also be provided with a printed confirmation for each transaction in the
shareholder's account and an individual monthly statement. A year-to-date
statement for any account will be provided upon request made to Goldman Sachs.
 
SUB-ACCOUNTING SERVICE
 
  The Fund has designed special procedures to assist banks and other
institutional investors desiring to establish multiple accounts (master
accounts and their sub-accounts). Sub-accounts may be established with
registration by name and/or number. Institutions will not normally be charged
for this service unless otherwise agreed upon. Upon request, master accounts
will be provided with a monthly summary report which sets forth in order by
account number (or name) the share balance at month end and the income, if any,
together with the total share balance and income, if any, for the master
account.
 
                                       30
<PAGE>
 
                        PURCHASE OF INSTITUTIONAL SHARES
 
  Institutional Shares of the Fund may be purchased through Goldman Sachs at
the net asset value per share next determined after receipt of an order without
the imposition of a sales load. If, by 3:00 p.m. Chicago time (4:00 p.m. New
York time), an order, a check or a Federal Reserve draft is received by Goldman
Sachs, the price per share will be the net asset value per share computed on
the day the purchase order or such form of payment is received. See "Net Asset
Value."
 
PURCHASE PROCEDURES
 
  Purchases of Institutional Shares may be made by placing an order with
Goldman Sachs at 800-621-2550 and either wiring Federal Funds to The Northern
Trust Company ("Northern") as subcustodian for State Street Bank and Trust
Company ("State Street") on the next Business Day or initiating an ACH transfer
to ensure receipt by Northern on the next Business Day. Purchases may also be
made by check (except that a check drawn on a foreign bank will not be
accepted) or Federal Reserve draft made payable to "Goldman Sachs Trust--GS
Adjustable Rate Government Agency Fund" and should be directed to Goldman Sachs
Trust--GS Adjustable Rate Government Agency Fund, c/o GSAM Shareholder
Services, 4900 Sears Tower, Chicago, Illinois 60606. Payment of the proceeds of
redemption of shares purchased by check may be delayed for a period of time as
described under "Redemption of Institutional Shares."
 
  In order to make an initial investment in the Fund, an investor must
establish an account with the Fund by furnishing necessary information to the
Fund or Goldman Sachs. An Account Information Form, a copy of which is attached
to this Prospectus, should be used to establish such an account. Subsequent
purchases of Institutional Shares may be made in the manner set forth in the
preceding paragraph.
 
  The minimum initial investment is $50,000 in Institutional Shares of the Fund
alone or in combination with Institutional Shares of any other mutual fund
sponsored by Goldman Sachs and designated as an eligible fund for this purpose
and the relevant class of any portfolio of Goldman Sachs Money Market Trust.
The minimum investment requirement may be waived for current and former
officers, partners, directors or employees of Goldman Sachs or any of its
affiliates or for other investors at the discretion of the Trust's officers. No
minimum amount is required for subsequent investments. The Fund reserves the
right to redeem the Institutional Shares of any Institutional Shareholder whose
account balance is less than $100 as a result of earlier redemptions. Such
redemptions will not be implemented if the value of an Institutional
Shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days' prior written
notice to Institutional Shareholders whose Institutional Shares are being
redeemed to allow them to purchase sufficient additional Institutional Shares
of the Fund to avoid such redemption.
 
OTHER PURCHASE INFORMATION
 
  PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is
received by Goldman Sachs by 3:00 p.m. Chicago time, the purchased shares will
be issued and dividends will begin on such shares on the next Business Day,
provided that a Federal Funds wire or an ACH transfer is received by Northern
on such day.
 
  PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a purchase check or Federal
Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and
 
                                       31
<PAGE>
 
dividends will begin on such shares on the next Business Day after the check or
Federal Reserve draft is received by Goldman Sachs.
 
  Banks, trust companies or other institutions through which investors acquire
Institutional Shares may impose charges in connection with transactions in
Institutional Shares. Such institutions should be consulted for information
regarding such charges.
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges by a
particular purchaser (or group of related purchasers). The Fund or Goldman
Sachs may reject or restrict purchases or exchanges of Institutional Shares by
a particular purchaser or group, for example, when a pattern of frequent
purchases and sales or exchanges of Institutional Shares of the Fund is
evident, or if the purchase and sale or exchange orders are, or a subsequent
abrupt redemption might be, of a size that would disrupt management of the
Fund.
 
                               EXCHANGE PRIVILEGE
 
  Institutional Shares of the Fund may be exchanged for (i) Institutional
Shares of any other mutual fund sponsored by Goldman Sachs and designated as an
eligible fund for this purpose and (ii) the relevant class of any portfolio of
Goldman Sachs Money Market Trust at the net asset value next determined either
by writing to Goldman Sachs, Attention: Goldman Sachs Trust--GS Adjustable Rate
Government Agency Fund, c/o GSAM Shareholder Services, 4900 Sears Tower,
Chicago, Illinois 60606 or, if previously elected in the Fund's Account
Information Form, by telephone at 800-621-2550 (7:00 a.m. to 3:00 p.m. Chicago
time). A shareholder should obtain and read the prospectus relating to any
other fund and its shares or units and consider its investment objective,
policies and applicable fees before making an exchange. Under the telephone
exchange privilege, Institutional Shares may be exchanged among accounts with
different names, addresses and social security or other taxpayer identification
numbers only if the exchange request is in writing and is received in
accordance with the procedures set forth under "Redemption of Institutional
Shares."
 
  In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Institutional Shares" to confirm
that such instructions are genuine. For federal income tax purposes, an
exchange is treated as a sale of the Institutional Shares surrendered in the
exchange, on which an investor may realize a gain or loss, followed by a
purchase of Institutional Shares or the relevant class of any portfolio of
Goldman Sachs Money Market Trust received in the exchange. Shareholders should
consult their own tax advisers concerning the tax consequences of an exchange.
 
  All exchanges which represent an initial investment in a fund must satisfy
the minimum investment requirements of the fund into which the Institutional
Shares are being exchanged, except that this requirement may be waived at the
discretion of the officers of such fund. Exchanges are only available in states
where exchanges may legally be made. The exchange privilege may be modified or
withdrawn at any time on sixty (60) days' written notice to Institutional
Shareholders and is subject to certain limitations. See "Purchase of
Institutional Shares."
 
                                       32
<PAGE>
 
                       REDEMPTION OF INSTITUTIONAL SHARES
 
  The Fund will redeem its Institutional Shares upon request of an
Institutional Shareholder on any Business Day at the net asset value next
determined after the receipt by the Transfer Agent of such request in proper
form. See "Net Asset Value." If Institutional Shares to be redeemed were
recently purchased by check, the Fund may delay transmittal of redemption
proceeds until such time as it has assured itself that good funds have been
collected for the purchase of such Institutional Shares. This may take up to
fifteen (15) days. Redemption requests may be made by writing to or calling the
Transfer Agent at the address or telephone number set forth on the inside front
cover page of this Prospectus. An Institutional Shareholder may request
redemptions by telephone if the optional telephone redemption privilege is
elected on the Account Information Form accompanying this Prospectus. It may be
difficult to implement redemptions by telephone in times of drastic economic or
market changes.
 
  In an effort to prevent unauthorized or fraudulent redemption or exchange
requests by telephone, Goldman Sachs employs reasonable procedures specified by
the Trust to confirm that such instructions are genuine. Among other things,
any redemption request that requires money to go to an account or address other
than that designated on the Account Information Form must be in writing and
signed by an authorized person designated on the Account Information Form. Any
such written request is also confirmed by telephone with both the requesting
party and the designated bank account to verify instructions. Exchanges among
accounts with different names, addresses and social security or other taxpayer
identification numbers must be in writing and signed by an authorized person
designated on the Account Information Form. Other procedures may be implemented
from time to time. If reasonable procedures are not implemented, the Trust may
be liable for any loss due to unauthorized or fraudulent transactions. In all
other cases, neither the Fund, the Trust nor Goldman Sachs will be responsible
for the authenticity of redemption or exchange instructions received by
telephone.
 
  Written requests for redemptions must be signed by each Institutional
Shareholder, whose signature has been guaranteed by a bank, securities broker
or dealer, a credit union having authority to issue signature guarantees, a
savings and loan association, a building and loan association, a cooperative
bank, a federal savings bank or association, a national securities exchange, a
registered securities association or a clearing agency, provided that such
institution satisfies the standards established by the Transfer Agent. If
Goldman Sachs receives a redemption request by 3:00 p.m. Chicago time, the
Institutional Shares to be redeemed earn dividends with respect to the day the
request is received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired as Federal Funds to the bank account designated in the
Institutional Shareholder's Account Information Form. Redemption proceeds will
normally be wired on the next Business Day in Federal Funds (for a total one-
day delay), but may be paid up to seven (7) days after receipt of a properly
executed redemption request. Wiring of redemption proceeds may be delayed one
additional Business Day if the Federal Reserve Bank is closed on the day
redemption proceeds would ordinarily be wired. In order to change the bank
designated on the Account Information Form to receive redemption proceeds, a
written request must be received by the Transfer Agent. This request must be
signature guaranteed as set forth above. Further documentation may be required
for executors, trustees or corporations. Once wire transfer instructions have
been given by Goldman Sachs, neither the Fund, the Trust nor Goldman Sachs
assumes any further responsibility for the performance of intermediaries of the
Institutional Shareholder's bank in the transfer process. If a problem with
such performance arises, the Institutional Shareholder should deal directly
with such intermediaries or bank.
 
                                       33
<PAGE>
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by Goldman Sachs. The request
for such redemption will not be considered to have been received in proper form
until such additional documentation has been received.
 
  Except with respect to Institutional Shareholders whose account balances are
less than $100, Institutional Shares are not redeemable at the option of the
Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                       34
<PAGE>
 
                                   APPENDIX A
 
                    GUIDELINES FOR CERTIFICATION OF TAXPAYER
               IDENTIFICATION NUMBER ON ACCOUNT INFORMATION FORM
 
  You are required by law to provide the Fund with your correct Taxpayer
Identification Number (TIN), regardless of whether you file tax returns.
Failure to do so may subject you to penalties. Failure to provide your correct
TIN and to sign your name in the Certification section of the Account
Information Form could result in withholding of 31% by the Fund for the Federal
backup withholding tax on distributions, redemptions, exchanges and other
payments relating to your account.
 
  Any tax withheld may be credited against taxes owed on your federal income
tax return.
 
  If you do not have a TIN, you should apply for one immediately by contacting
your local office of the Social Security Administration or the Internal Revenue
Service (IRS). Backup withholding could apply to payments relating to your
account while you are awaiting receipt of a TIN.
 
  Special rules apply for certain entities. For example, for an account
established under a Uniform Gifts or Transfers to Minors Act, the TIN of the
minor should be furnished.
 
  If you have been notified by the IRS that you are subject to backup
withholding because you failed to report your interest and/or dividend income
on your tax return and you have not been notified by the IRS that such
withholding should cease, you must cross out item (2) in the Certification
section of the Account Information Form.
 
  If you are an exempt recipient, you should furnish your TIN and certify your
exemption by signing the Certification section. Exempt recipients include:
corporations, tax-exempt pension plans and IRA's, governmental agencies,
financial institutions, registered securities and commodities dealers and
others.
 
  If you are a nonresident alien or foreign entity, you must provide a
completed Form W-8 to the Fund in order to avoid withholding on certain
payments. Other payments to you may be subject to nonresident alien withholding
of up to 30%.
 
  For further information regarding backup and nonresident alien withholding,
see Sections 3406, 1441 and 1442 of the Internal Revenue Code and consult your
tax adviser.
 
                                      A-1
<PAGE>
 
 THIS ACCOUNT INFORMATION FORM SHOULD BE FORWARDED PROMPTLY TO GOLDMAN, SACHS &
                                      CO.
                 NO REDEMPTION CAN BE MADE PRIOR TO ITS RECEIPT
                   GOLDMAN, SACHS & CO.--INSTITUTIONAL FUNDS
                            ACCOUNT INFORMATION FORM
SEND TO: GOLDMAN, SACHS & CO. INSTITUTIONAL FUNDS  MASTER NO.  _________________
         4900 SEARS TOWER                                        FUND USE ONLY
         CHICAGO, ILLINOIS 60606
         1-800-621-2550                            DATE: _______________________
 
                              INITIAL INVESTMENT:
 
( ) GOLDMAN SACHS MONEY MARKET TRUST   ( ) GS--ADJUSTABLE RATE GOVERNMENT AGENCY
    Fill in Portfolio(s):                      FUND
( ) OTHER FUND (Please write name of   ( ) GS--CORE FIXED INCOME FUND
    Fund in the space provided         ( ) GS--SHORT DURATION TAX-FREE FUND
    below):                            ( ) GS--SHORT-TERM GOVERNMENT AGENCY FUND
  -------------------------------      ( ) GS--GOVERNMENT AGENCY PORTFOLIO (FOR
                                               FINANCIAL INSTITUTIONS)
- --------------------------------------------------------------------------------
A. ACCOUNT RECORD

   ---------------------------------          ---------------------------------
            NAME OF ACCOUNT                           TELEPHONE NUMBER

   ---------------------------------
          STREET OR P.O. BOX                  
                                              U.S. CITIZEN OR
   ---------------------------------          RESIDENT? YES [_] NO [_]
   CITY         STATE          ZIP            IF NO IS CHECKED, FILL IN
                                              COUNTRY OF TAX RESIDENCE:
   ---------------------------------          -----------------------------
               ATTENTION                      
- --------------------------------------------------------------------------------
B. DIVIDENDS AND DISTRIBUTIONS--CHECK APPROPRIATE BOX (SEE "DIVIDENDS")
  1. DIVIDENDS (INCLUDING NET SHORT TERM       
     CAPITAL GAINS)--                          [_] CASH     [_] UNITS/SHARES
 
  2. NET LONG-TERM CAPITAL GAINS               
     DISTRIBUTIONS--                           [_] CASH     [_] UNITS/SHARES
  3. DIVIDENDS AND CAPITAL GAINS REINVESTED                 [_] UNITS/SHARES
     IN ANOTHER GOLDMAN SACHS PORTFOLIO ACCOUNT:
   (SEE PROSPECTUS REGARDING LIMITATIONS ON THIS PRIVILEGE.)
 
   FUND NAME_________________________ ACCOUNT NUMBER__________________________
    (IF NO BOX IS CHECKED, DIVIDENDS AND CAPITAL GAINS DISTRIBUTIONS WILL BE
                                  REINVESTED.)
- --------------------------------------------------------------------------------
C. SOCIAL SECURITY NUMBER OR OTHER TAXPAYER IDENTIFICATION NUMBER CERTIFICATION
   TAXPAYER IDENTIFICATION NUMBER: _____________________________________________
   UNDER PENALTIES OF PERJURY, I CERTIFY THAT (1) THE NUMBER SHOWN ON THIS FORM
   IS MY CORRECT TAXPAYER IDENTIFICATION NUMBER (OR I AM WAITING FOR A NUMBER TO
   BE ISSUED TO ME), AND (2) I AM NOT SUBJECT TO BACKUP WITHHOLDING BECAUSE I AM
   EXEMPT FROM BACKUP WITHHOLDING OR I HAVE NOT BEEN NOTIFIED BY THE INTERNAL
   REVENUE SERVICE (IRS) THAT I AM SUBJECT TO BACKUP WITHHOLDING AS A RESULT OF
   A FAILURE TO REPORT ALL INTEREST OR DIVIDENDS, OR THE IRS HAS NOTIFIED ME
   THAT I AM NO LONGER SUBJECT TO BACKUP WITHHOLDING. SEE THE "GUIDELINES FOR
   CERTIFICATION OF TAXPAYER IDENTIFICATION NUMBER" ON ACCOUNT INFORMATION FORM,
   CONTAINED IN THE APPENDIX TO THE ACCOMPANYING PROSPECTUS.
 
      SIGNATURE             DATE              NAME (PRINT) AND TITLE (IF ANY)
SIGN 
HERE  -------------------------------         ----------------------------------
   
      -------------------------------         ----------------------------------
- --------------------------------------------------------------------------------
D. OPTIONAL TELEPHONE EXCHANGE (SEE "EXCHANGE PRIVILEGE")
   [_] GOLDMAN, SACHS & CO. IS HEREBY AUTHORIZED TO ACCEPT AND ACT UPON
   TELEPHONE INSTRUCTIONS FROM THE UNDERSIGNED OR ANY OTHER PERSON FOR THE
   EXCHANGE OF SHARES/UNITS OF THE FUND INTO ANY FUND DESCRIBED IN THE
   ACCOMPANYING PROSPECTUS. THE UNDERSIGNED UNDERSTANDS AND AGREES THAT NEITHER
   THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. WILL BE LIABLE FOR ANY LOSS,
   EXPENSE, OR COST ARISING OUT OF ANY TELEPHONE REQUEST EFFECTED HEREUNDER.
<PAGE>
 
- --------------------------------------------------------------------------------
 
E. OPTIONAL REDEMPTION PLANS--CHECK APPROPRIATE BOX (SEE "REDEMPTION OF
   UNITS/SHARES")
   [_] 1. I AUTHORIZE GOLDMAN, SACHS & CO. TO HONOR TELEPHONE, TELEGRAPHIC, OR
   OTHER INSTRUCTIONS WITHOUT SIGNATURE GUARANTEE, FROM ANY PERSON FOR THE
   REDEMPTION OF SHARES FOR THE ABOVE ACCOUNT PROVIDED THAT THE PROCEEDS ARE
   TRANSMITTED TO THE FOLLOWING BANK ACCOUNT(S) ONLY. I UNDERSTAND ANY CHANGES
   TO THE FOLLOWING INFORMATION MUST BE MADE IN WRITING TO GOLDMAN, SACHS & CO.,
   MUST CONTAIN THE APPROPRIATE NUMBER OF SIGNATURES LISTED BELOW AND ALL
   SIGNATURES MUST BE SIGNATURE GUARANTEED. ABSENT ITS OWN GROSS NEGLIGENCE,
   NEITHER THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. SHALL BE LIABLE FOR SUCH
   REDEMPTIONS OR FOR PAYMENTS MADE TO ANY UNAUTHORIZED ACCOUNT.
                                       OR
   [_] 2. I HAVE FURNISHED GOLDMAN, SACHS & CO. WITH A SIGNATURE GUARANTEE (SEE
   SECTION G). I AUTHORIZE GOLDMAN, SACHS & CO. TO HONOR TELEPHONE, TELEGRAPHIC,
   OR OTHER INSTRUCTIONS, FROM ANY PERSON FOR THE REDEMPTION OF SHARES FOR THE
   ABOVE ACCOUNT PROVIDED THAT THE PROCEEDS ARE TRANSMITTED TO THE FOLLOWING
   BANK ACCOUNT(S) ONLY. ANY CHANGES TO THE FOLLOWING INFORMATION MUST BE MADE
   IN WRITING TO GOLDMAN, SACHS & CO. (BUT WITHOUT SIGNATURE GUARANTEE) AND
   CONTAIN THE APPROPRIATE NUMBER OF SIGNATURES LISTED BELOW. ABSENT ITS OWN
   GROSS NEGLIGENCE, NEITHER THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. SHALL
   BE LIABLE FOR SUCH REDEMPTIONS OR FOR PAYMENTS MADE TO ANY UNAUTHORIZED
   ACCOUNT.
 
PLEASE COMPLETE THE FOLLOWING BANK ACCOUNT INFORMATION AND PLACE A LINE THROUGH
THE UNUSED PORTION. ADDITIONAL INSTRUCTIONS MAY BE ADDED ON SEPARATE PAGES, IF
NECESSARY.
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
NUMBER OF BANK ACCOUNT DESTINATIONS COMPLETED IN SECTION E OF THIS FORM: [_]
 
- --------------------------------------------------------------------------------
  [_] 3. SPECIAL DRAFT (TRANSFER AGENT TO SUPPLY)
  [_] 4. BY MAIL
<PAGE>
 
F. SIGNATURE AUTHORIZATION
   BY THE EXECUTION OF THIS ACCOUNT INFORMATION FORM, THE UNDERSIGNED REPRESENTS
   AND WARRANTS THAT IT HAS FULL RIGHT, POWER AND AUTHORITY TO MAKE THE
   INVESTMENT APPLIED FOR PURSUANT TO THIS APPLICATION AND IS ACTING FOR ITSELF
   OR IN SOME FIDUCIARY CAPACITY IN MAKING SUCH INVESTMENT, AND THE
   INDIVIDUAL(S) SIGNING ON BEHALF OF THE UNDERSIGNED REPRESENT AND WARRANT THAT
   THEY ARE DULY AUTHORIZED TO SIGN THIS APPLICATION AND TO PURCHASE AND REDEEM
   UNITS/SHARES ON BEHALF OF THE UNDERSIGNED. THE UNDERSIGNED AFFIRMS THAT IT
   HAS RECEIVED A CURRENT FUND PROSPECTUS.

   THE UNDERSIGNED UNDERSTANDS THAT A LESSER DEGREE OF FLEXIBILITY CONCERNING
   THE PRECISE TIMING OF A REDEMPTION OF ITS INVESTMENT IN THE GS ADJUSTABLE
   RATE GOVERNMENT AGENCY FUND, GS CORE FIXED INCOME FUND, GS SHORT-TERM
   GOVERNMENT AGENCY FUND, GS SHORT DURATION TAX-FREE FUND OR GS GOVERNMENT
   AGENCY PORTFOLIO (FOR FINANCIAL INSTITUTIONS), AS WELL AS ALL OTHER NON-MONEY
   MARKET FUNDS, INCREASES THE LIKELIHOOD THAT THE SHAREHOLDER WILL BE REQUIRED
   TO REDEEM SHARES UNDER UNFAVORABLE MARKET CONDITIONS. IF SHARES ARE REDEEMED
   AT A DISADVANTAGEOUS TIME, THE VALUE OF THE FUND'S SHARES UPON REDEMPTION MAY
   BE LESS THAN THE PRICE AT WHICH THE FUND'S SHARES WERE PURCHASED. SINCE NONE
   OF THE FUNDS LISTED IN THIS PARAGRAPH IS A MONEY MARKET FUND OR MAINTAINS A
   CONSTANT NET ASSET VALUE PER SHARE, THE UNDERSIGNED MAY EXPERIENCE A LOSS OF
   PRINCIPAL ON ITS INVESTMENTS IN ANY SUCH FUND DURING ANY PARTICULAR PERIOD.

               SIGNATURE                       NAME (PRINT) AND TITLE (IF ANY)
 
SIGN  
HERE  ---------------------------------       ---------------------------------

      ---------------------------------       ---------------------------------

      ---------------------------------       ---------------------------------
NUMBER OF SIGNATURES REQUIRED TO MAKE CHANGES TO THIS FORM: [_]
- --------------------------------------------------------------------------------
G. SIGNATURE GUARANTEE
                                                 AFFIX GUARANTEE STAMP HERE
   ---------------------------------
        SIGNATURE GUARANTEED BY

   ---------------------------------
         AUTHORIZED SIGNATURE
- --------------------------------------------------------------------------------
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Summary...................................................................    3
Financial Highlights......................................................    8
Investment Objective and Policies.........................................    9
Investment Adviser........................................................   10
Adjustable and Fixed Rate Mortgage Loans and Mortgage-Backed Securities in
 Which the Fund Will Invest...............................................   11
Yield, Market Value and Risk Considerations of Mortgage-Backed Securities.   16
Other Investments and Practices ..........................................   18
Investment Restrictions...................................................   22
Portfolio Turnover........................................................   22
Management................................................................   23
Net Asset Value...........................................................   24
Performance Information...................................................   25
Shares of the Trust.......................................................   26
Taxation..................................................................   28
Additional Information....................................................   29
Dividends.................................................................   30
Reports to Shareholders...................................................   30
Purchase of Institutional Shares..........................................   31
Exchange Privilege........................................................   32
Redemption of Institutional Shares........................................   33
Appendix A................................................................  A-1
Account Information Form
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                              GS ADJUSTABLE RATE
                            GOVERNMENT AGENCY FUND
                             INSTITUTIONAL SHARES
 
                                  MANAGED BY
                                  ----------
                              GOLDMAN SACHS FUNDS
                               MANAGEMENT, L.P.
                                AN AFFILIATE OF
 
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
                                  PROSPECTUS
                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                               GS ADJUSTABLE RATE
                             GOVERNMENT AGENCY FUND
                             ADMINISTRATION SHARES
 
                                   MANAGED BY
                                   ----------
                      GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
                                AN AFFILIATE OF
                              GOLDMAN, SACHS & CO.
 
                                ----------------
 
  GS Adjustable Rate Government Agency Fund (the "Fund") is one fund in a
family of funds advised by Goldman Sachs Funds Management, L.P. (the
"Investment Adviser") or its affiliates, Goldman Sachs Asset Management and
Goldman Sachs Asset Management International. The Fund is organized as a
separate diversified portfolio of Goldman Sachs Trust (the "Trust"), an open-
end, management investment company.
 
  The Fund seeks to provide investors with a high level of current income,
consistent with low volatility of principal. The Fund will seek to achieve its
objective through investment in securities issued or guaranteed by the U.S.
Government, its agencies or instrumentalities. Under normal circumstances, at
least 65% of the Fund's total assets will consist of adjustable rate mortgage
pass-through securities and other mortgage securities with periodic interest
rate resets, which are issued or guaranteed by the U.S. Government, its
agencies or instrumentalities. The Fund may also invest in other mortgage-
backed securities and other obligations issued or guaranteed by the U.S.
Government, its agencies and instrumentalities, as well as repurchase
agreements collateralized by U.S. Government securities. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities.
 
  The Fund seeks to minimize fluctuation in the value of its portfolio
securities and therefore its net asset value. It believes that it can achieve
this objective by investing primarily in guaranteed adjustable rate mortgage-
backed securities, maintaining a maximum duration equal to that of a two-year
U.S. Treasury security and a target duration in a range approximately equal to
that of a 6-month to one-year U.S. Treasury security (computed using the method
described herein) and utilizing certain active management techniques to hedge
interest rate risks and to enhance its return. These techniques include the use
of futures contracts (including options on futures), mortgage and interest rate
swaps and interest rate floors, caps and collars. The Fund's investment in
mortgage-backed securities and the use of active management techniques may
entail certain risks. See "Risk Factors."
                                                        (continued on next page)
 
ADMINISTRATION SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR
GUARANTEED OR ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION,
AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
RESERVE BOARD OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN ADMINISTRATION
SHARES OF THE FUND INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF
PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
                 The date of this Prospectus is March 1, 1995.
<PAGE>
 
  The Fund seeks to provide investors with a higher level of current income
than they could receive from a money market fund. Although the Fund's net asset
value will fluctuate more than that of a portfolio of money market securities,
the Fund will attempt to minimize the effect of interest rate fluctuations on
the Fund's net asset value. See "Risk Factors."
 
  Goldman Sachs Funds Management, L.P., New York, New York, an affiliate of
Goldman, Sachs & Co., serves as the Fund's investment adviser. Goldman, Sachs &
Co. serves as the Fund's distributor and transfer agent. The Trust's custodian
is State Street Bank and Trust Company.
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Administration Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from institutions ("Service Organizations") that hold,
directly or through an agent, Administration Shares for the benefit of their
customers, or Goldman, Sachs & Co. by calling the telephone number, or writing
to one of the addresses, listed below.
 
GOLDMAN SACHS TRUST                     GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
4900 SEARS TOWER                        INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606                 ONE NEW YORK PLAZA
                                        NEW YORK, NEW YORK 10004
 
 
GOLDMAN, SACHS & CO.                    GOLDMAN, SACHS & CO.   
DISTRIBUTOR                             TRANSFER AGENT          
85 BROAD STREET                         4900 SEARS TOWER        
NEW YORK, NEW YORK 10004                CHICAGO, ILLINOIS 60606 
 
TOLL FREE (IN U.S.).....................800-621-2550
 
                                       2
<PAGE>
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Adjustable Rate Government Agency Fund (the "Fund") is one fund in a
family of funds advised by Goldman Sachs Funds Management, L.P. (the
"Investment Adviser") or its affiliates, Goldman Sachs Asset Management and
Goldman Sachs Asset Management International. The Fund is organized as a
separate diversified portfolio of Goldman Sachs Trust (the "Trust"), an open-
end, management investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The investment objective of the Fund is to provide investors with a high
level of current income, consistent with low volatility of principal. The Fund
seeks to achieve its objective by investing primarily in securities issued or
guaranteed by the U.S. Government, its agencies or instrumentalities. Under
normal circumstances, at least 65% of the Fund's total assets will consist of
adjustable rate mortgage pass-through securities and other mortgage securities
with periodic interest rate resets, which are issued or guaranteed by the U.S.
Government, its agencies or instrumentalities. The Fund may also invest in
other mortgage-backed securities and other obligations issued or guaranteed by
the U.S. Government, its agencies and instrumentalities, as well as repurchase
agreements collateralized by U.S. Government securities. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities.
 
  The Fund may employ certain active management techniques to hedge the
interest rate risks associated with the Fund's portfolio securities, to enhance
its return and to minimize fluctuation in its net asset value. These include,
but are not limited to, the use of futures contracts (including options on
futures), mortgage and interest rate swaps and interest rate floors, caps and
collars. The Fund may also utilize portfolio securities lending, mortgage
dollar rolls and repurchase agreements in an attempt to enhance the return
achieved by the Fund. See "Investment Objective and Policies" and "Other
Investments and Practices." There can be no assurance that the Fund will
achieve its investment objective.
 
  The Fund may, for temporary defensive purposes, hold or invest more than 35%
of its total assets in cash, U.S. Treasury securities or high quality money
market instruments, including commercial paper, bankers' acceptances,
repurchase agreements or other debt obligations with a remaining maturity of
one year or less.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Funds Management,
L.P., an affiliate of Goldman, Sachs & Co. ("Goldman Sachs"), serves as the
Fund's investment adviser. The Fund's portfolio is managed by the Investment
Adviser's mortgage-backed securities team, which as of January 31, 1995, was
responsible for managing approximately $5.2 billion in assets. In this
capacity, the Investment Adviser provides investment advisory and
administrative services and receives from the Fund a monthly fee equal on an
annual basis to 0.40% of the Fund's average daily net assets. Goldman Sachs
Funds Management, L.P. is registered with the Securities and Exchange
Commission (the "SEC") as an investment adviser. See "Investment Adviser" and
"Management--Investment Adviser."
 
 
                                       3
<PAGE>
 
                PURCHASE AND REDEMPTION OF ADMINISTRATION SHARES
 
  It is expected that all purchasers of Administration Shares of the Fund will
be Service Organizations or their nominees. Customers of Service Organizations
may invest in Administration Shares only through their Service Organizations.
Administration Shares of the Fund may be purchased by Service Organizations
through Goldman Sachs at the current net asset value per share without the
imposition of a sales load. The Fund does not have any minimum purchase or
account requirements with respect to Administration Shares. A Service
Organization may, however, impose a minimum amount for initial and subsequent
investments in Administration Shares, and may establish other requirements such
as a minimum account balance. See "Purchase of Administration Shares." The Fund
will redeem its Administration Shares upon request of a shareholder on any
Business Day at the net asset value next determined after receipt of such
request in proper form. See "Redemption of Administration Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
inquiries from Service Organizations. See "Management--Distributor and Transfer
Agent."
 
                                  RISK FACTORS
 
  GENERAL. While the Fund seeks to provide investors with a high level of
current income, consistent with low volatility of principal, the Fund's current
income and net asset value per share will fluctuate. The inherent volatility
risk of the Fund is such that, during any particular period, if shares of the
Fund are redeemed, an investor could suffer a loss of principal.
 
  INVESTMENT IN MORTGAGE-BACKED SECURITIES GENERALLY. The Fund's investments in
mortgage pass-through securities and other securities representing an interest
in or collateralized by adjustable rate and fixed rate mortgage loans
("Mortgage-Backed Securities") entail certain risks. These risks include the
failure of an issuer or guarantor to meet its obligations, adverse interest
rate changes, adverse economic, real estate or unemployment trends, failures in
connection with processing of transactions and the effects of prepayments on
mortgage cash flows. The Fund's policy of investing primarily in securities
issued or guaranteed by the U.S. Government, its agencies or instrumentalities,
however, is designed to minimize credit and performance related risks otherwise
associated with Mortgage-Backed Securities.
 
  YIELD CHARACTERISTICS. The yield characteristics of the Mortgage-Backed
Securities in which the Fund will invest differ from those of traditional fixed
income securities. The major differences typically include more frequent
interest and principal payments (usually monthly) on Mortgage-Backed
Securities, the adjustability of interest rates, and the possibility that
prepayments of principal may be made at any time.
 
 
                                       4
<PAGE>
 
  Prepayment rates are influenced by changes in current interest rates and a
variety of economic, geographic, social and other factors and cannot be
predicted with certainty. Both adjustable rate mortgage loans and fixed rate
mortgage loans may be subject to a greater rate of principal prepayments in a
declining interest rate environment and to a lesser rate of principal
prepayments in an increasing interest rate environment. Under certain interest
rate and prepayment rate scenarios, the Fund may fail to recoup fully its
investment in some of the Mortgage-Backed Securities it holds notwithstanding a
direct or indirect governmental or agency guarantee. The Fund's investments in
Mortgage-Backed Securities are subject to more rapid repayment than their
stated maturity dates would indicate as a result of the pass-through of
prepayments of principal on the underlying loans. Such repayment may increase
the volatility of an investment in Mortgage-Backed Securities relative to
similarly rated debt securities and, therefore, may increase the volatility of
the Fund's net asset value. The Fund intends to use hedging techniques to
control these risks. See "Investment Objective and Policies" and "Other
Investments and Practices." When the Fund reinvests amounts representing
scheduled payments and unscheduled prepayments of principal, it may receive a
rate of interest that is lower than the rate on its existing portfolio of
adjustable rate mortgage pass-through securities. Thus, Mortgage-Backed
Securities, and adjustable rate mortgage pass-through securities in particular,
may be less effective than other types of U.S. Government securities as a means
of "locking in" interest rates.
 
  MARKET RISKS. The securities in the Fund's portfolio will tend to decrease in
value when interest rates rise and increase in value when interest rates fall.
Because the Fund's investments are interest rate sensitive, the Fund's
performance will depend in large part upon the ability of the Fund to respond
to fluctuations in market interest rates and to utilize appropriate strategies
to maximize returns to the Fund, while attempting to minimize the associated
risks to its invested capital. Operating results will also depend upon the
availability of opportunities for the investment of the Fund's assets,
including purchases and sales of suitable securities.
 
  The market value of the Fund's adjustable rate Mortgage-Backed Securities may
be adversely affected if interest rates increase faster than the rates of
interest payable on such securities or by the adjustable rate mortgage loans
underlying such securities. Furthermore, adjustable rate Mortgage-Backed
Securities or the mortgage loans underlying such securities may contain
provisions limiting the amount by which rates may be adjusted upward and
downward and may limit the amount by which monthly payments may be increased or
decreased to accommodate upward and downward adjustments in interest rates.
These provisions may increase the sensitivity of such Mortgage-Backed
Securities to changes in value resulting from interest rate fluctuations.
 
  Certain adjustable rate mortgage loans may provide for periodic adjustments
of scheduled payments in order to fully amortize the mortgage loan by its
stated maturity. Other adjustable rate mortgage loans may permit such stated
maturity to be extended or shortened in accordance with the portion of each
payment that is applied to interest in accordance with the periodic interest
rate adjustments.
 
  Although having less risk of decline in value during periods of rising
interest rates, adjustable rate Mortgage-Backed Securities have less potential
for capital appreciation than fixed rate Mortgage-Backed Securities, because
their coupon rates will decline in response to market interest rate declines.
The
 
                                       5
<PAGE>
 
market value of fixed rate Mortgage-Backed Securities may be adversely affected
as a result of increases in interest rates and, because of the risk of
principal prepayments, may benefit less than other fixed rate securities of
similar maturity from declining interest rates. Finally, a higher than
anticipated rate of unscheduled principal prepayments on Mortgage-Backed
Securities purchased at a premium or a lower than anticipated rate of
unscheduled principal payments on Mortgage-Backed Securities purchased at a
discount may result in a lower yield than was anticipated at the time the
securities were purchased.
 
  OTHER INVESTMENTS AND PRACTICES. The Fund may invest in other instruments,
including obligations of the United States, and notes, bonds and discount notes
of U.S. Government agencies or instrumentalities. The Fund may engage in
certain other investment practices that also involve special risks. These
include, but are not limited to, the use of futures contracts (including
options on futures), mortgage and interest rate swaps and interest rate floors,
caps and collars, making forward commitments, lending portfolio securities and
entering into mortgage dollar rolls and repurchase agreements. See "Other
Investments and Practices."
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, its divisions and
affiliates (including the Investment Adviser), partners and officers, in the
investment activities and business operations of the Fund may present certain
conflicts of interest, as described under "Management--Investment Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends to declare a daily dividend determined with the objective of
distributing the majority of net investment income while enhancing the
stability of principal. Such dividends will accrue to shareholders of record,
as of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially
all of the Fund's net investment income. From time to time a portion of such
dividends may constitute a return of capital. The Fund also intends that net
realized capital gains, if any, after offset by any available capital loss
carryforwards from prior taxable years, will be declared as a dividend at least
annually. Recordholders of Administration Shares will receive dividends in
additional Administration Shares of the Fund or may elect to receive cash as
described under "Dividends."
 
                              ADMINISTRATION PLAN
 
  The Trust, on behalf of the Fund, has adopted an Administration Plan with
respect to the Administration Shares of the Fund which authorizes the Fund to
compensate Service Organizations for providing account administration services
to their customers who are the beneficial owners of such Shares. The Trust, on
behalf of the Fund, will enter into agreements with each Service Organization
which will provide for compensation to the Service Organization in an amount up
to 0.25% (on an annualized basis) of the average daily net assets of the
Administration Shares of the Fund attributable to or held in the name of the
Service Organization for its customers. See "Administration Plan."
 
                                       6
<PAGE>
 
 
                               FEES AND EXPENSES
                            (ADMINISTRATION SHARES)*
 
<TABLE>
<CAPTION>
                                                           GS ADJUSTABLE RATE
                                                         GOVERNMENT AGENCY FUND
                                                         ----------------------
<S>                                                      <C>
SHAREHOLDER TRANSACTION EXPENSES:
    Maximum Sales Load Imposed on Purchases.............          None
    Maximum Sales Load Imposed on Reinvested
     Dividends..........................................          None
    Redemption Fees.....................................          None
    Exchange Fees.......................................          None
ANNUAL FUND OPERATING EXPENSES:
(AS A PERCENTAGE OF AVERAGE NET ASSETS)
    Management Fees.....................................          0.40%
    Account Administration Fees.........................          0.25%**
    Other Expenses (after expense limitation)...........          0.05%***
                                                                  ----
        TOTAL FUND OPERATING EXPENSES (AFTER EXPENSE
         LIMITATION)....................................          0.70%***
                                                                  ====
</TABLE>

EXAMPLE:
- --------
You would pay the following expenses on a hypothetical $1,000 investment,
assuming (1) a 5% annual return and (2) redemption at the end of each time
period:
 
<TABLE>
<CAPTION>

1 YEAR  3 YEARS  5 YEARS  10 YEARS
- ------  -------  -------  --------
<S>     <C>      <C>      <C>
$ 7     $22      $39      $87
</TABLE>

- --------
  * The information set forth in the foregoing table and hypothetical example
    is based on estimated amounts for the current year and relates only to
    Administration Shares of the Fund. See "Shares of the Trust." Institutional
    Shares, Service Shares and Class A Shares of the Fund are subject to
    different fees and expenses. Institutional Shares are not subject to any
    administration or service fees. Service Shares are sold at net asset value
    per share and are subject to a service fee of up to 0.50% of average daily
    net assets. Class A Shares are sold at net asset value per share plus a
    sales charge of up to 1.5% and are subject to a distribution and service
    fee which is currently limited to 0.25% of average daily net assets. All
    other expenses related to Institutional Shares, Service Shares and Class A
    Shares are the same as for Administration Shares.
 ** Service Organizations (other than broker-dealers) may charge other fees to
    their customers who are beneficial owners of Administration Shares in
    connection with their customer accounts. See "Administration Plan."
*** The Investment Adviser voluntarily agreed to reduce or limit certain "Other
    Expenses" of the Fund (excluding advisory, distribution and service fees,
    payments to Service Organizations, taxes, interest and brokerage and
    litigation, indemnification and other extraordinary expenses) to the extent
    such expenses exceeded 0.05% per annum of the Fund's average net assets. If
    the Investment Adviser had not agreed to reduce or otherwise limit certain
    "Other Expenses" of the Fund, the Fund's other expenses and total operating
    expenses attributable to Administration Shares of the Fund would have been
    0.09% and 0.74%, respectively. The foregoing table and example also reflect
    current operating expenses that will be applicable on an ongoing basis. See
    "Management--Investment Adviser." Annual operating expenses incurred by the
    Fund during the fiscal year ended October 31, 1994 (expressed as a
    percentage of average daily net assets after fee adjustments) were as
    follows: Management Fees, Account Administration Fees and Other Expenses of
    0.40%, 0.25% and 0.06%, respectively, for total operating expenses of
    0.71%.
 
  The purpose of the foregoing table is to assist investors in understanding
the various costs and expenses of the Fund that an investor in the Fund will
bear directly or indirectly. The costs and expenses included in the table and
hypothetical example above should not be considered as representative of past
or future expenses. Actual fees and expenses may be greater or less than those
indicated. Moreover while the example assumes a 5% annual return, the Fund's
actual performance will vary and may result in an actual return greater or less
than 5%. See "Management" and "Administration Plan."
 
                                       7
<PAGE>
 
                              FINANCIAL HIGHLIGHTS
 
          SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  The following data with respect to Institutional Shares and Administration
Shares of the Fund outstanding during the periods indicated has been audited by
Arthur Andersen LLP, independent public accountants, as indicated in their
report incorporated by reference and attached to the Additional Statement from
the Fund's annual report to shareholders for the fiscal year ended October 31,
1994 (the "Annual Report"). This information should be read in conjunction with
the financial statements and related notes incorporated by reference and
attached to the Additional Statement. The Annual Report also contains
performance information and is available upon request and without charge by
writing to any of the addresses on the inside cover of this Prospectus.
 
<TABLE>
<CAPTION>
                                                                        DISTRIBUTIONS
                               INCOME FROM INVESTMENT OPERATIONS       TO SHAREHOLDERS
                           ----------------------------------------- --------------------
                                             NET
                 NET ASSET               REALIZED AND       TOTAL       FROM              NET ASSET            RATIO OF NET
                 VALUE AT     NET         UNREALIZED     INCOME FROM    NET     IN EXCESS VALUE AT             EXPENSES TO
                 BEGINNING INVESTMENT    GAIN (LOSS)     INVESTMENT  INVESTMENT  OF NET      END      TOTAL    AVERAGE NET
                 OF PERIOD   INCOME   ON INVESTMENTS (a) OPERATIONS    INCOME    INCOME   OF PERIOD RETURN (b)    ASSETS
                 --------- ---------- ------------------ ----------- ---------- --------- --------- ---------- ------------
<S>              <C>       <C>        <C>                <C>         <C>        <C>       <C>       <C>        <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
Shares..........  $10.00    $0.4341        $(0.2455)       $0.1886    ($0.4486)      --     $9.74      1.88%       0.46%
1994-
Administration
Shares..........   10.00     0.4211         (0.2572)        0.1639     (0.4239)      --      9.74      1.63        0.71
1993-
Institutional
Shares..........   10.04     0.4397         (0.0376)        0.4021     (0.4397)  (0.0024)   10.00      4.13        0.45
1993-
Administration
Shares (d)......   10.02     0.2146         (0.0173)        0.1973     (0.2146)  (0.0027)   10.00      2.01(f)     0.70(e)
1992-
Institutional
Shares..........   10.03     0.5599         (0.0029)        0.5570     (0.5470)      --     10.04      6.12        0.42
FOR THE PERIOD JULY 17, 1991 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1991-Institu-
tional Shares...   10.00     0.1531          0.0322         0.1853     (0.1553)      --     10.03      2.14(f)     0.20(e)
<CAPTION>
                                                              RATIOS
                                                           ASSUMING NO
                                                            WAIVER OF
                                                          ADVISORY FEES
                                                            OR EXPENSE
                                                            LIMITATION
                                                     ------------------------
                 RATIO OF NET                NET                 RATIO OF NET
                  INVESTMENT              ASSETS AT   RATIO OF    INVESTMENT
                  INCOME TO   PORTFOLIO      END     EXPENSES TO  INCOME TO
                 AVERAGE NET  TURNOVER    OF PERIOD  AVERAGE NET AVERAGE NET
                    ASSETS     RATE(c)    (IN 000'S)   ASSETS       ASSETS
                 ------------ ----------- ---------- ----------- ------------
<S>              <C>          <C>         <C>        <C>         <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
Shares..........     4.38%      37.81%    $ 942,523     0.49%        4.35%
1994-
Administration
Shares..........     4.27       37.81         6,960     0.74         4.24
1993-
Institutional
Shares..........     4.36      103.74     2,760,871     0.48         4.33
1993-
Administration
Shares (d)......     3.81(e)   103.74         5,326     0.73(e)      3.78(e)
1992-
Institutional
Shares..........     5.61      286.40     2,145,064     0.55         5.48
FOR THE PERIOD JULY 17, 1991 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1991-Institu-
tional Shares...     7.31(e)   145.67(e)    239,642     1.02(e)      6.49(e)
</TABLE>
- ----
(a) Includes balancing effect of calculating per share amounts.
(b) Assumes investment at the net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(c) Includes the effect of mortgage dollar roll transactions.
(d) Administration share activity commenced on April 15, 1993.
(e) Annualized.
(f) Not annualized.
 
                                       8
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a high level of
current income, consistent with low volatility of principal. The Fund seeks to
achieve its objective through investment in securities issued or guaranteed by
the U.S. Government, its agencies or instrumentalities. Under normal
circumstances, at least 65% of the Fund's total assets will consist of
adjustable rate mortgage pass-through securities and other mortgage securities
with periodic interest rate resets, which are issued or guaranteed by the U.S.
Government, its agencies or instrumentalities. The primary issuers or
guarantors of such securities currently include the Government National
Mortgage Association ("Ginnie Mae"), the Federal National Mortgage Association
("Fannie Mae") and the Federal Home Loan Mortgage Corporation ("Freddie Mac"),
although the Fund may invest in securities issued or guaranteed by other
agencies or instrumentalities in the future. The Fund may invest up to 35% of
its total assets in other Mortgage-Backed Securities and other obligations
issued or guaranteed by the U.S. Government, its agencies or instrumentalities,
as well as repurchase agreements collateralized by U.S. Government securities.
The Fund may, for temporary defensive purposes, hold or invest more than 35% of
its total assets in cash, U.S. Treasury securities or high quality money market
instruments, including commercial paper, bankers' acceptances, repurchase
agreements or other debt obligations with a remaining maturity of one year or
less. Under normal circumstances, substantially all of the Fund's assets will
be invested in securities issued or guaranteed by the U.S. Government, its
agencies or instrumentalities.
 
  The Fund may also employ certain active management techniques to hedge the
interest rate risks associated with the Fund's portfolio securities, to
minimize fluctuation in its net asset value and to enhance its return. These
techniques include, but are not limited to, futures contracts (including
options on futures), mortgage and interest rate swaps and interest rate floors,
caps and collars. The Fund may also employ other investment techniques to
enhance returns, such as loans of portfolio securities, mortgage dollar rolls
and repurchase agreements.
 
  The Fund will maintain a maximum duration approximately equal to that of a
two-year U.S. Treasury security. Under normal interest rate conditions, the
Fund's actual duration is expected to be in a range approximately equal to that
of a 6-month to one-year U.S. Treasury security. The Fund's duration is a
measure of the price sensitivity of the portfolio, including expected cash flow
and mortgage prepayments under a wide range of interest rate scenarios.
Maturity measures only the time until final payment is due on a bond or other
debt security; it takes no account of the pattern of a security's cash flows
over time, including how cash flow is affected by prepayments and by changes in
interest rates. In computing the duration of its portfolio, the Fund will have
to estimate the duration of obligations that are subject to prepayment or
redemption by the issuer taking into account the influence of interest rates on
prepayments and coupon flows. This method of computing duration is known as
option-adjusted duration. The Fund may use various techniques to shorten or
lengthen the option-adjusted duration of its portfolio, including the use of
futures contracts (including options on futures), the acquisition of debt
obligations at a premium or discount, mortgage and interest rate swaps and
interest rate floors, caps and collars.
 
  When interest rates decline, the value of a portfolio invested in fixed rate
debt securities can be expected to rise. Conversely, when interest rates rise,
the value of a portfolio invested in fixed rate debt securities can be expected
to decline. In contrast, since interest rates on adjustable rate mortgage loans
are reset periodically, yields of portfolio securities representing interests
in such loans will gradually align themselves to reflect changes in market
interest rates, causing the value of such securities to fluctuate less
dramatically in response to interest rate fluctuations than would fixed rate
debt securities. The
 
                                       9
<PAGE>
 
Investment Adviser expects the Fund's net asset value to be relatively stable
during normal market conditions. This is because the Fund's portfolio will
consist primarily of guaranteed adjustable rate Mortgage-Backed Securities and
because the Fund will maintain a maximum option-adjusted duration approximately
equal to that of a two-year U.S. Treasury security and will utilize certain
interest rate hedging techniques. However, a sudden and extreme increase in
prevailing interest rates may cause a decline in the Fund's net asset value.
Conversely, a sudden and extreme decline in interest rates could result in an
increase in the Fund's net asset value.
 
  Except as otherwise stated under "Investment Restrictions," the Fund's
investment objective and policies are not fundamental and may be changed
without a vote of shareholders. If there is a change in the Fund's investment
objective, shareholders should consider whether the Fund remains an appropriate
investment in light of their then current financial positions and needs. There
can be no assurance that the Fund will be successful in achieving its
investment objective. An investment in shares of the Fund does not constitute a
complete investment program. Investors may wish to complement an investment in
the Fund with other types of investments.
 
                               INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Funds Management, L.P., an
affiliate of Goldman Sachs. The management services provided by the Investment
Adviser are subject to the general supervision of the Trust's Board of
Trustees. The Investment Adviser and its affiliates serve a wide range of
clients including private and public pension funds, endowments, foundations,
banks, thrifts, insurance companies, corporations, and private investors and
family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and market expertise
of Goldman Sachs, whose investment research effort is one of the largest in the
industry. The in-depth information and analyses generated by Goldman Sachs'
research analysts, economists and portfolio strategists are available to the
Investment Adviser.
 
                                       10
<PAGE>
 
                 ADJUSTABLE AND FIXED RATE MORTGAGE LOANS AND 
           MORTGAGE-BACKED SECURITIES IN WHICH THE FUND WILL INVEST
 
THE NATURE OF ADJUSTABLE AND FIXED RATE MORTGAGE LOANS
 
  The following is a general description of the adjustable and fixed rate
mortgage loans which may be expected to underlie the Mortgage-Backed Securities
in which the Fund will invest. Since a wide variety of mortgage loans are
available to borrowers, the actual mortgage loans underlying any particular
issue of Mortgage-Backed Securities may differ materially from those described
below. In addition, the Fund will be permitted to invest in Mortgage-Backed
Securities that become available in the future to the extent such investments
are consistent with its investment objective and policies.
 
  ADJUSTABLE RATE MORTGAGE LOANS ("ARMS"). ARMs included in a mortgage pool
will generally provide for a fixed initial mortgage interest rate for a
specified period of time. Thereafter, the interest rates (the "Mortgage
Interest Rates") may be subject to periodic adjustment based on changes in the
applicable index rate (the "Index Rate"). The adjusted rate would be equal to
the Index Rate plus a gross margin, which is a fixed percentage spread over the
Index Rate established for each ARM at the time of its origination.
 
  Adjustable interest rates can cause payment increases that some mortgagors
may find difficult to make. However, certain ARMs may provide that the Mortgage
Interest Rate may not be adjusted to a rate above an applicable lifetime
maximum rate or below an applicable lifetime minimum rate for such ARM. Certain
ARMs may also be subject to limitations on the maximum amount by which the
Mortgage Interest Rate may adjust for any single adjustment period (the
"Maximum Adjustment"). Other ARMs ("Negatively Amortizing ARMs") may provide
instead or as well for limitations on changes in the monthly payment on such
ARMs. Limitations on monthly payments can result in monthly payments which are
greater or less than the amount necessary to amortize a Negatively Amortizing
ARM by its maturity at the Mortgage Interest Rate in effect in any particular
month. In the event that a monthly payment is not sufficient to pay the
interest accruing on a Negatively Amortizing ARM, any such excess interest is
added to the principal balance of the loan, causing negative amortization, and
will be repaid through future monthly payments. It may take borrowers under
Negatively Amortizing ARMs longer periods of time to achieve equity and may
increase the likelihood of default by such borrowers. In the event that a
monthly payment exceeds the sum of the interest accrued at the applicable
Mortgage Interest Rate and the principal payment which would have been
necessary to amortize the outstanding principal balance over the remaining term
of the loan, the excess (or "accelerated amortization") further reduces the
principal balance of the ARM. Negatively Amortizing ARMs do not provide for the
extension of their original maturity to accommodate changes in their Mortgage
Interest Rate. As a result, unless there is a periodic recalculation of the
payment amount (which there generally is), the final payment may be
substantially larger than the other payments. These limitations on periodic
increases in interest rates and on changes in monthly payments protect
borrowers from unlimited interest rate and payment increases.
 
  There are two main categories of indices which provide the basis for rate
adjustments on ARMs: those based on U.S. Treasury securities and those derived
from a calculated measure such as a cost of funds index or a moving average of
mortgage rates. Commonly utilized indices include the one-year, three-year and
five-year constant maturity Treasury rates, the three-month Treasury Bill rate,
the 180-day Treasury Bill rate, rates on longer-term Treasury securities, the
11th District Federal Home Loan Bank Cost of Funds, the National Median Cost of
Funds, the one-month, three-month, six-month or one year London Interbank
Offered Rate ("LIBOR"), the prime rate of a specific bank, or commercial paper
rates. Some indices, such as the one-year constant maturity Treasury rate,
closely mirror changes in market
 
                                       11
<PAGE>
 
interest rate levels. Others, such as the 11th District Federal Home Loan Bank
Cost of Funds index, tend to lag behind changes in market rate levels and tend
to be somewhat less volatile. The degree of volatility in the market value of
the Fund's portfolio and therefore in the net asset value of the Fund's shares
will be a function of the length of the interest rate reset periods and the
degree of volatility in the applicable indices.
 
  FIXED RATE MORTGAGE LOANS. Generally, fixed rate mortgage loans included in a
mortgage pool (the "Fixed Rate Mortgage Loans") will bear simple interest at
fixed annual rates and have original terms to maturity ranging from 5 to 40
years. Fixed Rate Mortgage Loans generally provide for monthly payments of
principal and interest in substantially equal installments for the term of the
mortgage note in sufficient amounts to fully amortize principal by maturity,
although certain fixed rate mortgage loans provide for a large final "balloon"
payment upon maturity.
 
  REGULATION OF MORTGAGE LOANS. Mortgage loans are subject to a variety of
state and federal laws and regulations designed to protect mortgagors, which
may impair the ability of the mortgage lender to enforce its rights under the
mortgage documents. These laws and regulations include legal restraints on
foreclosures, homeowner rights of redemption after foreclosure, federal and
state bankruptcy and debtor relief laws, restrictions on enforcement of
mortgage loan "due on sale" clauses and state usury laws. Even though the Fund
may invest in Mortgage-Backed Securities issued or guaranteed by the U.S.
Government, its agencies or instrumentalities, these regulations may adversely
affect the Fund's investments by delaying the Fund's receipt of payments
derived from principal of or interest on mortgage loans affected by such laws
and regulations.
 
MORTGAGE-BACKED SECURITIES
 
  CHARACTERISTICS OF MORTGAGE-BACKED SECURITIES. Mortgage-Backed Securities are
securities that directly or indirectly represent participations in, or are
collateralized by and payable from, mortgage loans secured by real property.
The investment characteristics of adjustable and fixed rate Mortgage-Backed
Securities differ from those of traditional fixed income securities. The major
differences include the payment of interest and principal on Mortgage-Backed
Securities on a more frequent (usually monthly) schedule, and the possibility
that principal may be prepaid at any time due to prepayments on the underlying
mortgage loans or other assets. These differences can result in significantly
greater price and yield volatility than is the case with traditional fixed
income securities. As a result, if the Fund purchases Mortgage-Backed
Securities at a premium, a faster than expected prepayment rate will reduce
both the market value and the yield to maturity from those which were
anticipated. A prepayment rate that is slower than expected will have the
opposite effect of increasing yield to maturity and market value. Conversely,
if the Fund purchases Mortgage-Backed Securities at a discount, faster than
expected prepayments will increase, while slower than expected prepayments will
reduce, yield to maturity and market value. The Investment Adviser will seek to
manage these potential risks and benefits by investing in a variety of
Mortgage-Backed Securities and by using certain hedging techniques. See "Other
Investments and Practices."
 
  Prepayments on a pool of mortgage loans are influenced by a variety of
factors, including economic conditions, changes in mortgagors' housing needs,
job transfers, unemployment, mortgagors' net equity in the mortgaged properties
and servicing decisions. The timing and level of prepayments cannot be
 
                                       12
<PAGE>
 
predicted. Generally, however, prepayments on adjustable rate mortgage loans
and fixed rate mortgage loans will increase during a period of falling mortgage
interest rates and decrease during a period of rising mortgage interest rates.
Accordingly, the amounts of prepayments available for reinvestment by the Fund
are likely to be greater during a period of declining mortgage interest rates.
If general interest rates also decline, such prepayments are likely to be
reinvested at lower interest rates than the Fund was earning on the Mortgage-
Backed Securities that were prepaid.
 
GUARANTEED MORTGAGE-BACKED SECURITIES IN WHICH THE FUND INVESTS
 
  All of the Fund's investments in Mortgage-Backed Securities will be issued or
guaranteed by the U.S. Government or one of its agencies or instrumentalities,
including but not limited to, Ginnie Mae, Fannie Mae and Freddie Mac. Ginnie
Mae securities are backed by the full faith and credit of the U.S. Government,
which means that the U.S. Government guarantees that the interest and principal
will be paid when due. Fannie Mae securities and Freddie Mac securities are not
backed by the full faith and credit of the U.S. Government; however, the
ability of these agencies to borrow from the U.S. Treasury makes their
securities high quality securities with minimal credit risks. There are several
types of guaranteed Mortgage-Backed Securities currently available, including
guaranteed mortgage pass-through certificates and multiple-class securities,
which include guaranteed Real Estate Mortgage Investment Conduit ("REMIC")
pass-through certificates and stripped Mortgage-Backed Securities. The Fund
will be permitted to invest in other types of Mortgage-Backed Securities that
may be available in the future to the extent investment in such securities is
consistent with its investment policies and objective, which require the Fund
to invest primarily in guaranteed adjustable rate Mortgage-Backed Securities.
 
1. GUARANTEED MORTGAGE PASS-THROUGH SECURITIES
 
  GINNIE MAE CERTIFICATES. Ginnie Mae is a wholly-owned corporate
instrumentality of the United States. Ginnie Mae is authorized to guarantee the
timely payment of the principal of and interest on certificates that are based
on and backed by a pool of mortgage loans insured by the Federal Housing
Administration ("FHA Loans"), or guaranteed by the Veterans Administration ("VA
Loans"), or by pools of other eligible mortgage loans. In order to meet its
obligations under any guaranty, Ginnie Mae is authorized to borrow from the
United States Treasury in an unlimited amount.
 
  FANNIE MAE CERTIFICATES. Fannie Mae is a stockholder-owned corporation
chartered under an act of the United States Congress. Each Fannie Mae
Certificate is issued and guaranteed by Fannie Mae and represents an undivided
interest in a pool of mortgage loans (a "Pool") formed by Fannie Mae. Each Pool
consists of residential mortgage loans ("Mortgage Loans") either previously
owned by Fannie Mae or purchased by it in connection with the formation of the
Pool. The Mortgage Loans may be either conventional Mortgage Loans (i.e., not
insured or guaranteed by any U.S. Government agency) or Mortgage Loans that are
either insured by the Federal Housing Administration ("FHA") or guaranteed by
the Veterans Administration ("VA"). However, the mortgage loans in Fannie Mae
Pools are primarily conventional Mortgage Loans. The lenders originating and
servicing the Mortgage Loans are subject to certain eligibility requirements
established by Fannie Mae.
 
  Fannie Mae has certain contractual responsibilities. With respect to each
Pool, Fannie Mae is obligated to distribute scheduled monthly installments of
principal and interest after Fannie Mae's servicing and guaranty fee, whether
or not received, to Certificate holders. Fannie Mae also is obligated
 
                                       13
<PAGE>
 
to distribute to holders of Certificates an amount equal to the full principal
balance of any foreclosed Mortgage Loan, whether or not such principal balance
is actually recovered. The obligations of Fannie Mae under its guaranty of the
Fannie Mae Certificates are obligations solely of Fannie Mae.
 
  FREDDIE MAC CERTIFICATES. Freddie Mac is a publicly-held U.S. Government
sponsored enterprise. The principal activity of Freddie Mac currently is the
purchase of first lien, conventional, residential mortgage loans and
participation interests in such mortgage loans and their resale in the form of
mortgage securities, primarily Freddie Mac Certificates. A Freddie Mac
Certificate represents a pro rata interest in a group of mortgage loans or
participations in mortgage loans (a "Freddie Mac Certificate group") purchased
by Freddie Mac.
 
  Freddie Mac guarantees to each registered holder of a Freddie Mac Certificate
the timely payment of interest at the rate provided for by such Freddie Mac
Certificate (whether or not received on the underlying loans). Freddie Mac also
guarantees to each registered Certificate-holder ultimate collection of all
principal of the related mortgage loans, without any offset or deduction, but
does not, generally, guarantee the timely payment of scheduled principal. The
obligations of Freddie Mac under its guaranty of Freddie Mac Certificates are
obligations solely of Freddie Mac.
 
  CONVENTIONAL MORTGAGE LOANS. The conventional mortgage loans underlying the
Freddie Mac and Fannie Mae Certificates will consist of adjustable rate or
fixed rate mortgage loans with original terms to maturity of between five and
thirty years. Substantially all of these mortgage loans are secured by first
liens on one- to four-family residential properties or multi-family projects.
Each mortgage loan must meet the applicable standards set forth in the law
creating Freddie Mac or Fannie Mae. A Freddie Mac Certificate group may include
whole loans, participation interests in whole loans and undivided interests in
whole loans and participations comprising another Freddie Mac Certificate
group.
 
2. MULTIPLE CLASS PASS-THROUGH SECURITIES AND COLLATERALIZED MORTGAGE
OBLIGATIONS
 
  The Fund may also invest in multiple class securities issued by U.S.
Government agencies and instrumentalities such as Fannie Mae or Freddie Mac,
including guaranteed collateralized mortgage obligations ("CMOs") and REMIC
pass-through or participation certificates. A REMIC is a CMO that qualifies for
special tax treatment under the Internal Revenue Code of 1986, as amended (the
"Code"), and invests in certain mortgages principally secured by interests in
real property and other permitted investments.
 
  CMOs and guaranteed REMIC pass-through certificates ("REMIC Certificates")
issued by Fannie Mae and Freddie Mac are types of multiple class pass-through
securities. Investors may purchase beneficial interests in REMICs, which are
known as "regular" interests or "residual" interests. The Fund does not intend
to purchase residual interests in REMICs. The REMIC Certificates represent
beneficial ownership interests in a REMIC trust, generally consisting of
mortgage loans or Fannie Mae, Freddie Mac or Ginnie Mae guaranteed mortgage
pass-through certificates (the "Mortgage Assets"). The obligations of Fannie
Mae or Freddie Mac under their respective guaranty of the REMIC Certificates
are obligations solely of Fannie Mae or Freddie Mac, respectively.
 
  Fannie Mae REMIC Certificates are issued and guaranteed as to timely
distribution of principal and interest by Fannie Mae. In addition, Fannie Mae
will be obligated to distribute the principal balance of each class of REMIC
Certificates in full, whether or not sufficient funds are otherwise available.
 
                                       14
<PAGE>
 
  For Freddie Mac REMIC Certificates, Freddie Mac guarantees the timely payment
of interest, and also guarantees the payment of principal as payments are
required to be made on the underlying mortgage participation certificates
("PCs"). PCs represent undivided interests in specified level payment,
residential mortgages or participations therein purchased by Freddie Mac and
placed in a PC pool. With respect to principal payments on PCs, Freddie Mac
generally guarantees ultimate collection of all principal of the related
mortgage loans without offset or deduction. Freddie Mac also guarantees timely
payment of principal on certain PCs.
 
  CMOs and REMIC Certificates are issued in multiple classes. Each class of
CMOs or REMIC Certificates, often referred to as a "tranche," is issued at a
specific adjustable or fixed interest rate and must be fully retired no later
than its final scheduled distribution date. Principal prepayments on the
Mortgage Loans or the Mortgage Assets underlying the CMOs or REMIC Certificates
may cause some or all of the classes of CMOs or REMIC Certificates to be
retired substantially earlier than their final distribution dates. Generally,
interest is paid or accrues on all classes of CMOs or REMIC Certificates on a
monthly basis.
 
  The principal of and interest on the Mortgage Assets may be allocated among
the several classes of CMOs or REMIC Certificates in various ways. In certain
structures (known as "sequential pay" CMOs or REMIC Certificates), payments of
principal, including any principal prepayments, on the Mortgage Assets
generally are applied to the classes of CMOs or REMIC Certificates in the order
of their respective final distribution dates. Thus no payment of principal will
be made on any class of sequential pay CMOs or REMIC Certificates until all
other classes having an earlier final distribution date have been paid in full.
 
  Additional structures of CMOs and REMIC Certificates include, among others,
"parallel pay" CMOs and REMIC Certificates. Parallel pay CMOs or REMIC
Certificates are those which are structured to apply principal payments and
prepayments of the Mortgage Assets to two or more classes concurrently on a
proportionate or disproportionate basis. These simultaneous payments are taken
into account in calculating the final distribution date of each class.
 
  A wide variety of REMIC Certificates may be issued in the parallel pay or
sequential pay structures. These securities include accrual certificates (also
known as "Z-Bonds"), which only accrue interest at a specified rate until all
other certificates having an earlier final distribution date have been retired
and are converted thereafter to an interest-paying security, and planned
amortization class ("PAC") certificates, which are parallel pay REMIC
Certificates which generally require that specified amounts of principal be
applied on each payment date to one or more classes of REMIC Certificates (the
"PAC Certificates"), even though all other principal payments and prepayments
of the Mortgage Assets are then required to be applied to one or more other
classes of the Certificates. The scheduled principal payments for the PAC
Certificates generally have the highest priority on each payment date after
interest due has been paid to all classes entitled to receive interest
currently. Shortfalls, if any, are added to the amount payable on the next
payment date. The PAC Certificate payment schedule is taken into account in
calculating the final distribution date of each class of PAC. In order to
create PAC tranches, one or more tranches generally must be created that absorb
most of the volatility in the underlying mortgage assets. These tranches tend
to have market prices and yields that are much more volatile than the PAC
classes.
 
3. STRIPPED MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in stripped mortgage-backed securities ("SMBS"), which
are derivative multiclass mortgage securities. The Fund may only invest in SMBS
issued or guaranteed by the U.S. Government, its agencies or instrumentalities.
 
                                       15
<PAGE>
 
  SMBS are usually structured with two classes that receive different
proportions of the interest and principal distributions from a pool of Mortgage
Assets. A common type of SMBS will have one class receiving all of the interest
from the Mortgage Assets, while the other class will receive all of the
principal. However, in some instances, one class will receive some of the
interest and most of the principal while the other class will receive most of
the interest and the remainder of the principal. If the underlying Mortgage
Assets experience greater than anticipated prepayments of principal, the Fund
may fail to fully recoup its initial investment in these securities. Although
the market for such securities is increasingly liquid, certain SMBS may not be
readily marketable and will be considered illiquid for purposes of the Fund's
limitation on investments in illiquid securities. The market value of the class
consisting entirely of principal payments generally is unusually volatile in
response to changes in interest rates. The yields on a class of SMBS that
receives all or most of the interest from Mortgage Assets are generally higher
than prevailing market yields on other Mortgage-Backed Securities because their
cash flow patterns are more volatile and there is a greater risk that the
initial investment will not be fully recouped. The Investment Adviser will seek
to manage these risks (and potential benefits) by investing in a variety of
such securities and by using certain hedging techniques. See "Other Investments
and Practices."
 
                 YIELD, MARKET VALUE AND RISK CONSIDERATIONS OF
                           MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in certain Mortgage-Backed Securities, such as interest-
only and principal-only SMBS, that are extremely sensitive to changes in
prepayments and interest rates. Even though such securities have been issued or
guaranteed by an agency or instrumentality of the U.S. Government, under
certain interest rate or prepayment rate scenarios, the Fund may fail to fully
recover its investment in such securities.
 
  The investment characteristics of Mortgage-Backed Securities differ from
those of traditional fixed income securities. The major differences typically
include more frequent interest and principal payments, usually monthly, and the
possibility that unscheduled prepayments of principal may be made at any time.
Prepayment rates are influenced by changes in current interest rates and a
variety of economic, geographic, social and other factors and cannot be
predicted with certainty. As with fixed rate mortgage loans, adjustable rate
mortgage loans may be subject to a greater prepayment rate in a declining
interest rate environment. The yields to maturity of the Mortgage-Backed
Securities in which the Fund invests will be affected by the actual rate of
payment (including prepayments) of principal of the underlying mortgage loans.
The mortgage loans underlying such securities generally may be prepaid at any
time without penalty. In a fluctuating interest rate environment, a predominant
factor affecting the prepayment rate on a pool of mortgage loans is the
difference between the interest rates on the mortgage loans and prevailing
mortgage loan interest rates (giving consideration to the cost of any
refinancing). In general, if interest rates on new mortgage loans fall
sufficiently below the interest rates existing on fixed rate mortgage loans
underlying mortgage pass-through securities, the rate of prepayment would be
expected to increase. Conversely, if mortgage loan interest rates rise above
the interest rates on the fixed rate mortgage loans underlying the mortgage
pass-through securities, the rate of prepayment may be expected to decrease.
 
  The rate of principal prepayments with respect to ARMs has fluctuated in
recent years. As is the case with fixed rate mortgage loans, ARMs may be
subject to a greater rate of principal prepayments in a declining interest rate
environment. For example, if prevailing interest rates fall significantly, ARMs
could
 
                                       16
<PAGE>
 
be subject to higher prepayment rates than if prevailing interest rates remain
constant because the availability of fixed rate mortgage loans at competitive
interest rates may encourage mortgagors to refinance their ARMs to "lock-in" a
lower fixed interest rate. Conversely, if prevailing interest rates rise
significantly, ARMs may prepay at lower rates than if prevailing rates remain
at or below those in effect at the time such ARMs were originated due, for
example, to the unavailability of lower rate alternatives. As with fixed rate
mortgages, there can be no certainty as to the rate of prepayments on the ARMs
in either stable or changing interest rate environments. In addition, there can
be no certainty as to whether increases in the principal balances of the ARMs
due to the addition of deferred interest may result in a default rate higher
than that on ARMs that do not provide for negative amortization. Other factors
affecting prepayment of ARMs include changes in mortgagors' housing needs, job
transfers, unemployment, mortgagors' net equity in the mortgage properties and
servicing decisions.
 
  The Fund's reinvestment of principal payments and prepayments received on a
mortgage pass-through security may be made at rates higher or lower than the
rate payable on such security, thus affecting the return realized by the Fund.
In addition, the receipt of interest payments monthly rather than semi-annually
by the Fund has a compounding effect that may increase the yield to the Fund
relative to debt obligations that pay interest semi-annually. Due to these
factors, Mortgage-Backed Securities may also be less effective than U.S.
Treasury securities of similar maturity at maintaining yields during periods of
changing interest rates. Prepayments may have a disproportionate effect on
certain Mortgage-Backed Securities such as SMBS and certain other multiple
class pass-through securities. The Fund may purchase Mortgage-Backed Securities
at a premium or at a discount.
 
  RISKS ASSOCIATED WITH DERIVATIVE MORTGAGE-BACKED SECURITIES. Derivative
Mortgage-Backed Securities are subject to different combinations of interest
rate and/or prepayment risks. In addition, particular derivative securities may
be leveraged such that their exposure (i.e., price sensitivity) to interest
rate and/or prepayment risk is magnified. The Investment Adviser may use
derivative Mortgage-Backed Securities and other derivative securities
consistent with the Fund's investment objective for a variety of purposes
including adjusting the average duration or interest rate sensitivity of the
Fund's portfolio or attempting to enhance the Fund's total return. The
Investment Adviser manages the risks and benefits of derivative Mortgage-Backed
Securities and other derivative securities by prudent analysis, selection and
monitoring of such securities included in the Fund's portfolio.
 
  The risk of faster than anticipated prepayments generally adversely affects
interest-only securities (IOs), super floaters and premium priced Mortgage-
Backed Securities. The risk of slower than anticipated prepayments generally
adversely affects principal-only securities (POs), floating rate securities
subject to interest rate caps, support tranches and discount priced Mortgage-
Backed Securities.
 
  RISKS ASSOCIATED WITH OTHER DERIVATIVE FLOATING RATE SECURITIES. Other types
of floating rate derivative securities present more complex types of interest
rate risks. For example, range floaters are subject to the risk that the coupon
will be reduced to below market rates if a designated interest rate floats
outside of a specified interest rate band or collar. Dual index or yield curve
floaters are subject to lower prices in the event of an unfavorable change in
the spread between two designated interest rates.
 
                                       17
<PAGE>
 
                        OTHER INVESTMENTS AND PRACTICES
 
  INVERSE FLOATING RATE SECURITIES. The Fund may invest in leveraged inverse
floating rate debt instruments ("inverse floaters"). The interest rate on an
inverse floater resets in the opposite direction from the market rate of
interest to which the inverse floater is indexed. An inverse floater may be
considered to be leveraged to the extent that its interest rate varies by a
magnitude that exceeds the magnitude of the change in the index rate of
interest. The higher degree of leverage inherent in inverse floaters is
associated with greater volatility in their market values. Accordingly, the
duration of an inverse floater may exceed its stated final maturity. Certain
inverse floaters may be deemed to be illiquid securities for purposes of the
Fund's 15% limitation on investments in such securities.
 
  OTHER INVESTMENTS. The Fund may also invest in other instruments including
obligations of the United States, notes, bonds, and discount notes of other
U.S. Government agencies or instrumentalities, including but not limited to:
Federal National Mortgage Association, Government National Mortgage
Association, Federal Home Loan Mortgage Corporation, Federal Home Loan Banks,
Bank for Cooperatives, Farm Credit Banks, Tennessee Valley Authority, Federal
Financing Bank, Small Business Administration and Federal Agricultural Mortgage
Corporation.
 
  INTEREST RATE SWAPS, MORTGAGE SWAPS, CAPS, FLOORS AND COLLARS. The Fund may
enter into interest rate swaps and mortgage swaps for hedging purposes and to
increase total return. The Fund may also enter into other types of interest
rate swap arrangements such as caps, floors and collars. Interest rate swaps
involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, e.g., an exchange of floating rate
payments for fixed rate payments. Mortgage swaps are similar to interest rate
swaps in that they represent commitments to pay and receive interest. The
notional principal amount, however, is tied to a reference pool or pools of
mortgages. The purchase of an interest rate cap entitles the purchaser, to the
extent that a specified index exceeds a predetermined interest rate, to receive
payment of interest on a notional principal amount from the party selling such
interest rate cap. The purchase of an interest rate floor entitles the
purchaser, to the extent that a specified index falls below a predetermined
interest rate, to receive payment of interest on a notional principal amount
from the party selling such interest rate floor. An interest rate collar is the
combination of a cap and a floor that preserves a certain return within a
predetermined range of interest rates. Since interest rate swaps, mortgage
swaps, caps, floors and collars are individually negotiated, the Fund expects
to achieve an acceptable degree of correlation between its portfolio
investments and its swap, cap, floor and collar positions entered into for
hedging purposes.
 
  The Fund will enter into interest rate swaps and mortgage swaps only on a net
basis, which means that the two payment streams are netted out, with the Fund
receiving or paying, as the case may be, only the net amount of the two
payments. Interest rate swaps and mortgage swaps do not involve the delivery of
securities, other underlying assets or principal. Accordingly, the risk of loss
with respect to interest rate swaps and mortgage swaps is limited to the net
amount of payments that the Fund is contractually obligated to make. If the
other party to an interest rate swap or mortgage swap defaults, the Fund's risk
of loss consists of the net amount of payments that the Fund is contractually
entitled to receive, if any. To the extent the net amount of an interest rate
swap or mortgage swap is held in a segregated account, consisting of cash and
liquid, high grade debt securities, the Fund and the Investment Adviser believe
that swaps do not constitute senior securities under the Investment Company Act
of 1940, as amended (the "Act") and, accordingly, will not treat them as being
subject to the Fund's borrowing restriction.
 
                                       18
<PAGE>
 
  The Fund will not enter into any interest rate swap, mortgage swap, or
interest rate cap, floor or collar transactions unless the unsecured commercial
paper, senior debt or claims paying ability of the other party is rated either
AA or A-1 or better by Standard & Poor's Ratings Group ("S&P") or Aa or P-1 or
better by Moody's Investors Service, Inc. ("Moody's"), or, if unrated by such
rating organizations, determined to be of comparable quality by the Investment
Adviser.
 
  The use of interest rate swaps and mortgage swaps, as well as interest rate
floors, caps and collars, is a highly specialized activity which involves
investment techniques and risks different from those associated with ordinary
portfolio securities transactions. If the Investment Adviser is incorrect in
its forecasts of market values and interest rates, the investment performance
of the Fund would be less favorable than it would have been if these investment
techniques were not used. The staff of the SEC considers interest rate swaps
and mortgage swaps, as well as interest rate caps, floors and collars, to be
illiquid securities for purposes of the Fund's 15% limitation on illiquid
investments.
 
  FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS.  To hedge against changes
in interest rates or securities prices or to seek to increase total return, the
Fund may purchase and sell various kinds of futures contracts, and purchase and
write call and put options on any of such futures contracts. The Fund will
engage in futures and related options transactions only for bona fide hedging
purposes as defined in regulations of the Commodity Futures Trading Commission
or to seek to increase total return to the extent permitted by such
regulations.
 
  The Fund may not purchase or sell futures contracts or purchase or sell
related options to increase total return, except for closing purchase or sale
transactions, if immediately thereafter the sum of the amount of initial margin
deposits and premiums paid on the Fund's outstanding positions in futures and
related options entered into for the purpose of seeking to increase total
return would exceed 5% of the market value of the Fund's net assets.
Transactions in futures contracts and options on futures involve brokerage
costs, require margin deposits and, in the case of contracts and options
obligating the Fund to purchase securities, require the Fund to segregate cash
and liquid, high-grade debt securities with a value equal to the amount of the
Fund's obligations.
 
  While transactions in futures contracts and options on futures may reduce
certain risks, such transactions themselves entail certain other risks. See
"Investment Objectives and Policies--Futures Contracts and Options on Futures
Contracts" in the Additional Statement. Thus, while the Fund may benefit from
the use of futures and options on futures, unanticipated changes in interest
rates or securities prices may result in a poorer overall performance for the
Fund than if it had not entered into any futures contracts or options
transactions. The loss incurred by the Fund in writing options on futures is
potentially unlimited and may exceed the amount of the premium received.
 
  The use of futures may increase the volatility of the Fund's net asset value.
The profitability of the Fund's trading in futures to increase total return
will depend on the Investment Adviser's ability to correctly analyze the
futures markets. In addition, because of the low margin deposits normally
required in futures trading, a relatively small price movement in a futures
contract may result in substantial losses to the Fund. Further, futures trading
may be illiquid, and exchanges may limit fluctuations in futures contract
prices during a single day.
 
                                       19
<PAGE>
 
  In the event of an imperfect correlation between a futures position and a
portfolio position which is intended to be protected, the desired protection
may not be obtained and the Fund may be exposed to risk of loss. Perfect
correlation between the Fund's futures positions and portfolio positions will
be impossible to achieve. The Fund's transactions in options and futures
contracts may be limited by the requirements of the Code, for qualification as
a regulated investment company.
 
  RISKS OF DERIVATIVE TRANSACTIONS.  The Fund's transactions in interest rate
and mortgage swaps, interest rate caps, floors and collars, futures and options
on futures involve certain risks, including a possible lack of correlation
between changes in the value of hedging instruments and the portfolio assets
being hedged, the potential illiquidity of the markets for derivative
instruments, the risks arising from the margin requirements and related
leverage factors associated with such transactions. The use of these management
techniques to seek to increase total return also involves the risk of loss if
the Investment Adviser is incorrect in its expectation of fluctuations in
securities prices or interest rates.
 
  LENDING OF PORTFOLIO SECURITIES. The Fund may also seek to increase its
income by lending portfolio securities. Under present regulatory policies, such
loans may be made to institutions, such as certain broker-dealers, and are
required to be secured continuously by collateral in cash, cash equivalents or
U.S. Government securities maintained on a current basis in an amount at least
equal to the market value of the securities loaned. Cash collateral may be
invested in cash equivalents. If the Investment Adviser determines to make
securities loans, the value of the securities loaned may not exceed 33 1/3% of
the value of the total assets of the Fund. See "Investment Restrictions" in the
Additional Statement. The Fund may experience a loss or delay in the recovery
of its securities if the institution with which it has engaged in a portfolio
loan transaction breaches its agreement with the Fund.
 
  WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase
securities on a when-issued basis. When-issued transactions arise when
securities are purchased by the Fund with payment and delivery taking place in
the future in order to secure what is considered to be an advantageous price
and yield to the Fund at the time of entering into the transaction. The Fund
may also purchase securities on a forward commitment basis. In a forward
commitment transaction, the Fund contracts to purchase securities for a fixed
price at a future date beyond customary settlement time. The Fund is required
to hold and maintain in a segregated account until the settlement date cash or
liquid, high-grade debt obligations in an amount sufficient to meet the
purchase price. Alternatively, the Fund may enter into offsetting contracts for
the forward sale of other securities that it owns. The purchase of securities
on a when-issued or forward commitment basis involves a risk of loss if the
value of the security to be purchased declines prior to the settlement date.
Although the Fund would generally purchase securities on a when-issued or
forward commitment basis with the intention of actually acquiring securities
for its portfolio, the Fund may dispose of a when-issued security or forward
commitment prior to settlement if the Investment Adviser deems it appropriate
to do so.
 
  MORTGAGE DOLLAR ROLLS. The Fund may enter into mortgage "dollar rolls" in
which the Fund sells securities for delivery in the current month and
simultaneously contracts with the same counterparty to repurchase similar (same
type, coupon and maturity), but not identical securities on a specified future
date. During the roll period, the Fund loses the right to receive principal and
interest paid on the securities sold. However, the Fund would benefit to the
extent of any difference between the price received for the securities sold and
the lower forward price for the future purchase (often referred to as the
"drop") or fee income plus the interest earned on the cash proceeds of the
securities sold until the settlement date
 
                                       20
<PAGE>
 
of the forward purchase. Unless such benefits exceed the income, capital
appreciation and gain or loss due to mortgage prepayments that would have been
realized on the securities sold as part of the mortgage dollar roll, the use of
this technique will diminish the investment performance of the Fund compared
with what such performance would have been without the use of mortgage dollar
rolls. All cash proceeds will be invested in instruments that are permissible
investments for the Fund. The Fund will hold and maintain in a segregated
account until the settlement date cash or liquid, high-grade debt securities in
an amount equal to the forward purchase price.
 
  For financial reporting and tax purposes, the Fund treats mortgage dollar
rolls as two separate transactions; one involving the purchase of a security
and a separate transaction involving a sale. The Fund does not currently intend
to enter into mortgage dollar rolls that are accounted for as a financing.
 
  Mortgage dollar rolls involve certain risks including the following: if the
broker-dealer to whom the Fund sells the security becomes insolvent, the Fund's
right to purchase or repurchase the mortgage-related securities subject to the
mortgage dollar roll may be restricted and the instrument which the Fund is
required to repurchase may be worth less than an instrument which the Fund
originally held. Successful use of mortgage dollar rolls will depend upon the
Investment Adviser's ability to manage its interest rate and mortgage
prepayments exposure. For these reasons, there is no assurance that mortgage
dollar rolls can be successfully employed.
 
  REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with
dealers in U.S. Government securities and member banks of the Federal Reserve
System which furnish collateral at least equal in value or market price to the
amount of their repurchase obligation. In a repurchase agreement, the Fund
purchases a debt security from a seller which undertakes to repurchase the
security at a specified resale price on an agreed future date (ordinarily a
week or less). The resale price generally exceeds the purchase price by an
amount which reflects an agreed-upon market interest rate for the term of the
repurchase agreement. The primary risk is that, if the seller defaults, the
Fund might suffer a loss to the extent that the proceeds from the sale of the
underlying securities and other collateral held by the Fund in connection with
the related repurchase agreement are less than the repurchase price. Repurchase
agreements maturing in more than seven days are considered by the Fund to be
illiquid. In addition, the Fund, together with other registered investment
companies having advisory agreements with the Investment Adviser or any of its
affiliates, may transfer uninvested cash balances into a single joint account,
the daily aggregate balance of which will be invested in one or more repurchase
agreements.
 
  ILLIQUID SECURITIES. The Fund will not invest more than 15% of its net assets
in securities which are illiquid, including securities that are not readily
marketable, repurchase agreements maturing in more than seven days, interest
rate and mortgage swaps, interest rate caps, floors and collars, certain SMBS
and securities that are restricted as to resale. However, a restricted security
is not considered to be illiquid if the Trustees of the Trust determine, based
upon the Investment Adviser's continuing review of the trading markets for the
specific restricted security, under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale under Rule 144A under the
Securities Act of 1933 is liquid. In addition, a repurchase agreement which by
its terms can be liquidated before its nominal fixed term on seven days or less
notice is regarded as a liquid instrument. Subject to the 15% limitation on
illiquid securities investments, the Fund may acquire U.S. Government
securities in a private placement.
 
                                       21
<PAGE>
 
  Since it is not possible to predict with assurance exactly how this market
for restricted securities sold and offered under Rule 144A will develop, the
Board of Trustees will carefully monitor the Fund's investments in these
securities, focusing on such important factors, among others, as valuation,
credit quality, liquidity and availability of information. This investment
practice could have the effect of increasing the level of illiquidity in the
Fund to the extent that qualified institutional buyers become for a time
uninterested in purchasing these restricted securities.
 
  OTHER INVESTMENT COMPANIES. The Fund reserves the right to invest up to 10%
of its total assets, calculated at the time of purchase, in the securities of
other investment companies, including business development companies and small
business investment companies. The Fund may not invest more than 5% of its
total assets in the securities of any one investment company or acquire more
than 3% of the voting securities of any other investment company. Pursuant to
an exemptive order obtained from the SEC, other investment companies in which
the Fund may invest include money market funds for which the Investment Adviser
or any of its affiliates serves as investment adviser. The Fund will indirectly
bear its proportionate share of any management fees and other expenses paid by
investment companies in which it invests in addition to the advisory fees paid
by the Fund. However, to the extent that the Fund invests in a money market
fund for which the Investment Adviser or any of its affiliates acts as adviser,
the advisory fees payable by the Fund to the Investment Adviser will be reduced
by an amount equal to the Fund's proportionate share of the advisory fees paid
by such money market fund to the Investment Adviser or any of its affiliates.
 
                            INVESTMENT RESTRICTIONS
 
  The Fund is subject to certain investment restrictions which, as described in
more detail in the Additional Statement, are fundamental policies that cannot
be changed without the approval of a majority of the outstanding shares of the
Fund. Among other restrictions, the Fund may not, with respect to 75% of its
total assets, purchase securities of any one issuer (other than securities
issued or guaranteed by the U.S. Government, its agencies or instrumentalities)
if more than 5% of its total assets would be invested in such issuer, or invest
more than 25% of its total assets in the securities of issuers (other than
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities) in any one industry. The Fund may borrow money but only as a
temporary measure for extraordinary or emergency purposes, provided that the
Fund maintains asset coverage of 300% for all such borrowings. As a matter of
non-fundamental policy, the Fund may not purchase securities while such
borrowings exceed 5% of the value of the Fund's total assets.
 
                               PORTFOLIO TURNOVER
 
  It is anticipated that the portfolio turnover rate of the Fund will vary from
year to year. The portfolio turnover rate is computed by dividing the lesser of
the amount of securities purchased or securities sold (excluding all securities
whose maturities at acquisition are one year or less) by the average monthly
value of such securities owned during the year. A 100% turnover rate would
occur, for example, if all of the securities held by the Fund were sold and
replaced within one year. The Investment Adviser will not consider the
portfolio turnover rate a limiting factor in making investment decisions for
the Fund consistent with the Fund's investment objective and portfolio
management policies. A higher rate of portfolio turnover results in increased
transaction costs to the Fund. The portfolio turnover rate includes the effect
of entering into mortgage dollar rolls.
 
                                       22
<PAGE>
 
                                   MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct and supervise the Fund's
daily business operations. The Additional Statement contains information as to
the identity of, and other information about, the Trustees and officers of the
Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Funds Management, L.P., One New York Plaza, New York, New York
10004, a Delaware limited partnership which is an affiliate of Goldman Sachs,
acts as the investment adviser of the Fund. Goldman Sachs Funds Management,
L.P. was registered as an investment adviser in 1990. As of January 31, 1995,
the Investment Adviser, together with its affiliates, acted as investment
adviser, administrator or distributor for approximately $48.7 billion in
assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Funds
Management, L.P., subject to the general supervision of the Board of Trustees,
manages the Fund's portfolio and provides for the administration of all of the
Fund's other affairs. It is the responsibility of the Investment Adviser to
make investment decisions for the Fund and to place purchase and sale orders
for the Fund's portfolio transactions. Such orders may be directed to any
broker including, to the extent and in the manner permitted by applicable law,
Goldman Sachs or its affiliates. Goldman Sachs has agreed to permit the Fund to
use the name "Goldman Sachs" or a derivative thereof as part of the Fund's name
for as long as the Investment Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Jonathan A. Beinner and Theodore T. Sotir.
Mr. Beinner specializes in investing in a particular type of security the Fund
may hold. Mr. Sotir helps with overall portfolio strategy and is a member of
the Investment Adviser's risk control team. Mr. Beinner joined the Investment
Adviser in 1990 and is currently a Vice President, after working in the trading
and arbitrage group of Franklin Savings Association. Mr. Sotir joined the
Investment Adviser in 1993 and is currently a Vice President, after working as
a portfolio manager at Fidelity Management Trust Company. Prior to joining
Fidelity, Mr. Sotir worked for Goldman Sachs in the mortgage securities
department for six years.
 
  As compensation for the services rendered to the Fund by the Investment
Adviser pursuant to the Investment Advisory Agreement, and the assumption by
the Investment Adviser of the expenses related thereto, the Fund pays the
Investment Adviser a fee, computed daily and payable monthly, at an annual rate
equal to 0.40% of the Fund's average daily net assets. For the fiscal year
ended October 31, 1994, the Fund paid an advisory fee to the Investment Adviser
equal to 0.40% of the Fund's average daily net assets.
 
  The Investment Adviser has voluntarily agreed to reduce or otherwise limit
certain expenses of the Fund (excluding advisory, distribution and service
fees, payments to Service Organizations (as defined below), taxes, interest and
brokerage and litigation, indemnification and other extraordinary expenses) to
 
                                       23
<PAGE>
 
the extent such expenses exceed 0.05% annually of the Fund's average net
assets. Such reductions or limits, if any, are calculated monthly on a
cumulative basis and may be discontinued or modified by the Investment Adviser
at its discretion at any time. The Investment Adviser has also agreed to reduce
its fees payable (to the extent of such fees) by the amount the Fund's expenses
would, absent the fee reduction, exceed the applicable expense limitations
imposed by state securities administrators. See "Management--Expenses" in the
Additional Statement.
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser, Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts and
other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities and instruments as
the Fund. Goldman Sachs and its affiliates will not have any obligation to make
available any information regarding their proprietary activities or strategies,
or the activities or strategies used for other accounts managed by them, for
the benefit of the management of the Fund and it is not anticipated that the
Investment Adviser will have access to proprietary information for the purpose
of managing the Fund. The results of the Fund's investment activities,
therefore, may differ from those of Goldman Sachs and its affiliates and it is
possible that the Fund could sustain losses during periods in which Goldman
Sachs and its affiliates and other accounts achieve significant profits on
their trading for proprietary or other accounts. From time to time, the Fund's
activities may be limited because of regulatory restrictions applicable to
Goldman Sachs and its affiliates, and/or their internal policies designed to
comply with such restrictions. See "Activities of Goldman Sachs and its
Affiliates and Other Accounts Managed by Goldman Sachs" in the Additional
Statement for further information.
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact Goldman
Sachs (as Transfer Agent) at the address or the telephone number set forth on
the inside front cover page of this Prospectus.
 
                                NET ASSET VALUE
 
  The net asset value per share is calculated by the Fund's custodian as of the
close of regular trading on the New York Stock Exchange (normally 3:00 p.m.
Chicago time, 4:00 p.m. New York time), immediately after determination of the
income to be declared as a dividend on each Business Day (as such term is
defined under "Additional Information"). Net asset value per share of each
class is calculated by determining the net assets attributable to each class
and dividing by the number of outstanding shares of that class.
 
                                       24
<PAGE>
 
  Investments in Mortgage-Backed Securities and other debt obligations are
valued at fair value, based on yield equivalents, a pricing matrix or other
sources, under valuation procedures established by the Trust's Board of
Trustees. Other portfolio securities for which accurate market quotations are
readily available are valued on the basis of quotations furnished by pricing
services or provided by dealers in such securities. Portfolio securities for
which accurate market quotations are not readily available are valued in
accordance with the Trust's valuation procedures. Debt obligations with a
remaining maturity of 60 days or less are valued at amortized cost. The Board
of Trustees has determined that the amortized cost of such securities
approximates fair market value.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish yield and average annual total return
in advertisements and communications to shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most recent
calendar quarter, assuming reinvestment of all dividends and distributions at
net asset value. The total return calculation assumes a complete redemption of
the investment at the end of the relevant period. The Fund may also from time
to time advertise total return on a cumulative, average, year-by-year or other
basis for various specified periods by means of quotations, charts, graphs or
schedules. In addition to the above, the Fund may from time to time advertise
its performance relative to certain performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value for the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided in
shareholder reports, the Fund may, in its discretion, from time to time make a
list of its holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of shares in existence. Because each class of shares may be subject
to different expenses, the yield, total return and distribution rate
calculations with respect to each class of shares of the Fund for the same
period will differ. Due to the fees payable under the Distribution Plan,
Service Plan and the Administration Plan, the investment performance, for any
period, of the Institutional Shares will always be higher than that of the
 
                                       25
<PAGE>
 
Class A Shares, Service Shares and the Administration Shares. The investment
performance of the Administration Shares will always be higher than that of the
Service Shares. The investment performance of the Class A Shares will be
affected by the payment of a sales charge. Without giving effect to sales
charges, the investment performance of Class A Shares will be identical to the
Administration Shares as long as Goldman Sachs continues to limit its fee under
the Distribution Plan to 0.25% of the average daily net assets attributable to
Class A Shares. See "Shares of the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement the Trustees are
authorized to issue an unlimited number of shares of beneficial interest, $.001
par value per share. The Trustees of the Trust are responsible for the overall
management and supervision of its affairs. The Trustees of the Trust have
authority under the Trust Agreement to create and classify shares of beneficial
interest in separate series, without further action by shareholders. As of the
date of this Prospectus, the Trustees have authorized shares of the Fund and
ten other series. Additional series may be added in the future. The Trustees
also have authority to classify or reclassify any series or portfolio of shares
into one or more classes. Pursuant thereto, the Trustees have authorized the
issuance of four classes of shares of the Fund. These classes are:
Institutional Shares, Administration Shares, Service Shares and Class A Shares.
As of October 31, 1994, no Service Shares or Class A Shares of the Fund were
outstanding.
 
  Each Institutional Share, Administration Share, Service Share and Class A
Share of the Fund represents an equal proportionate interest in the assets
belonging to the Fund. All Fund expenses are based on a percentage of the
Fund's aggregate average net assets, except that the respective fees under
Administration, Service and Distribution Plans relating to a particular class
will be borne exclusively by that class. It is contemplated that most
Administration Shares and Service Shares will be held in accounts of which the
record owner is a bank or other institution acting, directly or through an
agent, as nominee for its customers who are the beneficial owners of the shares
or another organization designated by such bank or institution. Administration
Shares and Service Shares will each be marketed only to such institutional
investors, at net asset value with no sales load. Institutional Shares may be
purchased for accounts in the name of an investor or institution that is not
compensated by the Fund for services provided to the institution's customers.
Administration Shares may be purchased for accounts held in the name of an
institution that provides certain account administration services to its
customers, including maintenance of account records and processing orders to
purchase, redeem or exchange Administration Shares. Administration Shares bear
the cost of account administration fees at the annual rate of up to 0.25% of
the average daily net assets of such Administration Shares. Service Shares may
be purchased for accounts held in the name of an institution that provides
certain account administration and shareholder liaison services to its
customers, including maintenance of account records and processing orders to
purchase, redeem or exchange Service Shares, responding to customer inquiries
and assisting customers with investment procedures. Service Shares bear the
cost of service fees at the annual rate of up to 0.50% of the average daily net
assets of such Service Shares. (Institutions that provide services to holders
of Administration or Service Shares are referred to in this Prospectus as
"Service Organizations"). Class A Shares of a Fund may be bought at net asset
value plus a sales charge of up to
 
                                       26
<PAGE>
 
1.5% of the purchase price through Goldman Sachs and certain investment
dealers, including members of the National Association of Securities Dealers,
Inc. ("NASD") and certain other financial service firms that have entered into
a sales agreement with Goldman Sachs ("Authorized Dealers"). The minimum
investment requirements, services, programs and purchase and redemption options
for shares purchased through a particular Authorized Dealer may be different
from those available to investors purchasing through other Authorized Dealers.
Class A Shares bear the cost of distribution and service fees at the annual
rate of up to 0.50% of the average daily net asset of such Class A Shares.
Goldman Sachs has agreed to limit the amount of the distribution and service
fees payable by the Fund to 0.25% of its average daily net assets attributable
to Class A Shares. Goldman Sachs has no current intention of modifying or
discontinuing such limitation, but may do so in the future at its discretion.
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration, Service and Class A
Shares) to its customers and thus receive different compensation with respect
to different classes of shares of the Fund. Administration Shares, Service
Shares and Class A Shares may each have certain exclusive voting rights on
matters relating to their respective plans. Shares of each class may be
exchanged only for shares of the same class in another fund and certain money
market funds sponsored by Goldman Sachs. The Fund may amend such policy in the
future. Dividends paid by the Fund, if any, with respect to each class of
shares will be calculated in the same manner, at the same time on the same day
and will be in the same amount, except for differences caused by the fact that
the respective fees under Administration, Service and Distribution Plans
relating to a particular class will be borne exclusively by that class.
Similarly, the net asset value per share will vary depending on the class of
shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or conversion rights.
 
  Under Massachusetts law, there is a remote possibility that shareholders of a
business trust could, under certain circumstances, be held personally liable as
partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
  Unless otherwise required by the Act, ordinarily it will not be necessary for
the Trust to hold annual meetings of shareholders. As a result, shareholders
may not consider each year the election of Trustees or the appointment of
independent accountants. Shareholders may remove a Trustee by the affirmative
vote of at least two-thirds of the Trust's outstanding shares and the Trustees
must promptly call a meeting
 
                                       27
<PAGE>
 
for such purpose when requested to do so in writing by the record holders of
not less than 10% of the outstanding shares of the Trust. Shareholders may,
under certain circumstances, communicate with other shareholders in connection
with requesting a special meeting of shareholders. The Board of Trustees,
however, will call a special meeting for the purpose of electing Trustees if,
at any time, less than a majority of Trustees holding office at the time were
elected by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue share
certificates. Instead, the Transfer Agent maintains a record of each
shareholder's ownership. Each shareholder receives confirmation of purchase and
redemption orders from the Transfer Agent. Shares and any dividends and
distributions paid by the Fund are reflected in account statements from the
Transfer Agent.
 
                                    TAXATION
 
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code and intends to continue to qualify for such treatment.
To qualify for treatment as a regulated investment company, the Fund must
satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
  Dividends paid by the Fund from net investment income, the excess of net
short-term capital gain over net long-term capital loss and original issue
discount or certain market discount income will be taxable to shareholders as
ordinary income. Dividends paid by the Fund from the excess of net long-term
capital gain over net short-term capital loss will be taxable as long-term
capital gains regardless of how long the shareholders have held their shares.
These tax consequences will apply regardless of whether distributions are
received in cash or reinvested in shares. Certain distributions paid by the
Fund in January of a given year may be taxable to shareholders as if received
the prior December 31. Shareholders will be informed annually about the amount
and character of distributions received from the Fund for federal income tax
purposes.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
when received even though the distribution represents a return of a portion of
the purchase price.
 
  Redemptions and exchanges of shares are taxable events on which a shareholder
may recognize a gain or loss.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on distributions, redemptions and
exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other shareholders
that are not U.S. persons under the Code are subject to different tax rules and
may be subject to nonresident alien withholding at the rate of 30% (or a lower
rate provided by an applicable tax treaty) on amounts treated as ordinary
dividends from the Fund.
 
                                       28
<PAGE>
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local or
foreign taxes on payments received from the Fund. A state income (and possibly
local income and/or intangible property) tax exemption is generally available
to the extent the Fund's distributions are derived from interest on (or, in the
case of intangibles taxes, the value of its assets is attributable to) certain
U.S. Government obligations, provided in some states that certain thresholds
for holdings of such obligations and/or reporting requirements are satisfied.
 
  Shareholders should consult their own tax advisers with respect to the
federal, state, local and foreign tax consequences of investing in the Fund in
their particular circumstances. See the Additional Statement for a further
discussion of certain tax consequences of investing in shares of the Fund.
 
                             ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at the meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days when
the Investment Adviser, The Northern Trust Company, State Street Bank and Trust
Company and the Federal Reserve Bank of New York are open for business, which
is Monday through Friday except for holidays. Such holidays currently are: New
Year's Day (observed), Martin Luther King Day, Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Columbus Day,
Thanksgiving and Christmas. On those days when one or more of such
organizations close early as a result of such day being a partial holiday or
otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                       29
<PAGE>
 
                              ADMINISTRATION PLAN
 
  The Trust, on behalf of the Fund, has adopted an Administration Plan with
respect to the Administration Shares which authorizes the Fund to compensate
Service Organizations for providing account administration services to their
customers who are beneficial owners of such Shares. The Trust, on behalf of the
Fund, will enter into agreements with Service Organizations which purchase
Administration Shares on behalf of their customers ("Service Agreements"). The
Service Agreements will provide for compensation to the Service Organizations
in an amount up to 0.25% (on an annualized basis) of the average daily net
assets of the Administration Shares of the Fund attributable to or held in the
name of the Service Organization for its customers. The services provided by
the Service Organizations may include acting, directly or through an agent, as
the sole shareholder of record, maintaining account records for customers and
processing orders to purchase, redeem or exchange Administration Shares for
customers.
 
  For the fiscal year ended October 31, 1994, the Trust, on behalf of the Fund,
paid the Service Organizations fees at the annual rate of 0.25% of the Fund's
average daily net assets attributable to Administration Shares.
 
  Holders of Administration Shares of the Fund will bear all expenses and fees
paid to Service Organizations with respect to such Shares as well as any other
expenses which are directly attributable to such Shares.
 
  Service Organizations (other than broker-dealers) may charge other fees to
their customers who are the beneficial owners of Administration Shares in
connection with their customer accounts. These fees would be in addition to any
amounts received by the Service Organization under a Service Agreement and may
affect the return earned on an investment in the Fund. The Trust, on behalf of
the Fund, will accrue payments made pursuant to a Service Agreement daily. All
inquiries of beneficial owners of Administration Shares should be directed to
such owners' Service Organization.
 
                                   DIVIDENDS
 
  The Fund intends to declare a daily dividend determined with the objective of
distributing the majority of net investment income while enhancing the
stability of principal. Such dividend will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially all
of the Fund's net investment income. From time to time a portion of such
dividends may constitute a return of capital. The Fund also intends that all net
realized long-term and short-term capital gains will be declared as a dividend
at least annually. In determining amounts of capital gains to be distributed,
capital losses including any available capital loss carryovers from prior years
will be offset against capital gains.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination is
made as of 3:00 p.m. Chicago time.
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case payment
will be made on the first Business Day of the succeeding month. Payment
 
                                       30
<PAGE>
 
of dividends with respect to capital gains, if any, when declared will be made
in additional shares of the Fund at the net asset value on the payment date,
unless cash distributions are elected. This election to receive dividends in
cash is initially made on the Account Information Form and may be changed upon
written notice to the Transfer Agent at any time prior to the record date for a
particular dividend or distribution. If cash dividends are elected with respect
to the Fund's monthly net investment income dividends then cash dividends must
also be elected with respect to the non-long term capital gains component, if
any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or unrealized appreciation of the Fund's portfolio securities. Therefore,
subsequent distributions (or portions thereof) on such shares may be taxable to
the investor even if the net asset value of the shares is, as a result of the
distributions, reduced below the cost of such shares and the distributions (or
portions thereof) represent a return of a portion of the purchase price.
 
                            REPORTS TO SHAREHOLDERS
 
  Recordholders of Administration Shares of the Fund will receive an annual
report containing audited financial statements and a semi-annual report. Each
recordholder of Administration Shares will also be provided with a printed
confirmation for each transaction in its account and a monthly account
statement. A year-to-date statement for any account will be provided to a
Service Organization upon request made to Goldman Sachs.
 
  Service Organizations will be responsible for providing services similar to
those described above to their customers who are the beneficial owners of such
Shares. For example, Service Organizations are responsible for providing each
customer exercising investment discretion with monthly statements with respect
to such customer's account in lieu of an immediate confirmation of each
transaction.
 
                       PURCHASE OF ADMINISTRATION SHARES
 
  It is expected that all direct purchasers of Administration Shares of the
Fund will be Service Organizations or their nominees. Customers of Service
Organizations may invest in Administration Shares only through their Service
Organizations. Administration Shares of the Fund may be purchased by a Service
Organization through Goldman Sachs at the net asset value per share next
determined after receipt from a Service Organization of an order without the
imposition of a sales load. If, by 3:00 p.m. Chicago time (4:00 p.m. New York
time), an order, a check or a Federal Reserve draft is received from a Service
Organization by Goldman Sachs, the price per share will be the net asset value
per share computed on the day the purchase order or such form of payment is
received. See "Net Asset Value."
 
                                       31
<PAGE>
 
PURCHASE PROCEDURES
 
  Purchases of Administration Shares by a Service Organization may be made by
placing an order with Goldman Sachs at 800-621-2550 and either wiring Federal
Funds to The Northern Trust Company ("Northern") as subcustodian for State
Street Bank and Trust Company ("State Street") on the next Business Day or
initiating an ACH transfer to ensure receipt by Northern on the next Business
Day. Purchases may also be made by a Service Organization by check (except that
a check drawn on a foreign bank will not be accepted) or Federal Reserve draft
made payable to "Goldman Sachs Trust--GS Adjustable Rate Government Agency
Fund" and should be directed to Goldman Sachs Trust--GS Adjustable Rate
Government Agency Fund, c/o GSAM Shareholder Services, 4900 Sears Tower,
Chicago, Illinois 60606. Payment of the proceeds of redemption of shares
purchased by check may be delayed for a period of time as described under
"Redemption of Administration Shares."
 
  The Service Organizations are responsible for the timely transmittal of
purchase orders to Goldman Sachs and payments to Northern or Goldman Sachs. In
order to facilitate timely transmittal, the Service Organizations have
established times by which purchase orders and payments must be received by
them.
 
OTHER PURCHASE INFORMATION
 
  The Fund does not have any minimum purchase or account requirements with
respect to Administration Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Administration Shares,
and may establish other requirements such as a minimum required account
balance. A Service Organization may effect redemptions of noncomplying
accounts, and may impose a charge for any special services rendered to its
customers. Customers should contact their Service Organization for further
information concerning such requirements and charges.
 
  The Fund reserves the right to redeem Administration Shares of any Service
Organization whose account balance is less than $100 as a result of earlier
redemptions. Such redemptions will not be implemented if the value of such
shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days prior written
notice to Service Organizations whose Administration Shares are being redeemed
to allow them to purchase sufficient additional Administration Shares to avoid
such redemption.
 
PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is received
from a Service Organization by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and dividends will begin on such shares on the
next Business Day, provided that a Federal Funds wire or an ACH transfer is
received by Northern on such day.
 
PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a Service Organization's check
or Federal Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago
time, the purchased shares will be issued and dividends will begin on such
shares on the next Business Day after the Service Organization's check or
Federal Reserve draft is received by Goldman Sachs.
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges of
Administration Shares by a particular purchaser (or group of related
purchasers). The Fund or Goldman Sachs may reject or restrict purchases
 
                                       32
<PAGE>
 
or exchanges of Administration Shares by a particular purchaser or group, for
example, when a pattern of frequent purchases and sales or exchanges of
Administration Shares of the Fund is evident, or if the purchase, sale or
exchange orders are, or a subsequent abrupt redemption might be, of a size that
would disrupt management of the Fund.
 
                               EXCHANGE PRIVILEGE
 
  Administration Shares of the Fund may be exchanged by Service Organizations
for (i) Administration Shares of any other mutual fund sponsored by Goldman
Sachs and designated as an eligible fund for this purpose and (ii) the relevant
class of any portfolio of Goldman Sachs Money Market Trust at the net asset
value next determined either by writing to Goldman Sachs, Attention: Goldman
Sachs Trust--GS Adjustable Rate Government Agency Fund, c/o GSAM Shareholder
Services, 4900 Sears Tower, Chicago, Illinois 60606 or, if previously elected
in the Fund's Account Information Form, by telephone at 800-621-2550 (7:00 a.m.
to 3:00 p.m. Chicago time). A shareholder should obtain and read the prospectus
relating to any other fund and its shares or units and consider its investment
objective, policies and applicable fees before making an exchange.
Administration Shares acquired by telephone exchange must be registered in the
same name(s) and have the same address as Administration Shares of the Fund for
which the exchange is being made.
 
  In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Administration Shares" to confirm
that such instructions are genuine. For federal income tax purposes, an
exchange is treated as a sale of the Administration Shares surrendered in the
exchange, on which an investor may realize a gain or loss, followed by a
purchase of Administration Shares or the relevant class of any portfolio of
Goldman Sachs Money Market Trust received in the exchange. Shareholders should
consult their own tax advisers concerning the tax consequences of an exchange.
Exchanges are available only in states where exchanges may legally be made. The
exchange privilege may be modified or withdrawn at any time on sixty (60) days'
written notice to the recordholders of Administration Shares and is subject to
certain limitations. See "Purchase of Administration Shares."
 
                      REDEMPTION OF ADMINISTRATION SHARES
 
  The Fund will redeem its Administration Shares upon request of the
recordholder of such Shares on any Business Day at the net asset value next
determined after the receipt by the Transfer Agent of such request in proper
form. See "Net Asset Value." If Administration Shares to be redeemed were
recently purchased by check, the Fund may delay transmittal of redemption
proceeds until such time as it has assured itself that good funds have been
collected for the purchase of such Administration Shares. This may take up to
fifteen (15) days. Redemption requests may be made by writing to or calling the
Transfer Agent at the address or telephone number set forth on the inside front
cover page of this Prospectus. A Service Organization may request redemptions
by telephone if the optional telephone redemption privilege is elected on the
Account Information Form. It may be difficult to implement redemptions by
telephone in times of drastic economic or market changes. In an effort to
prevent unauthorized or fraudulent redemption or exchange requests by
telephone, Goldman Sachs employs reasonable
 
                                       33
<PAGE>
 
procedures specified by the Trust to confirm that such instructions are
genuine. Among other things, any redemption request that requires money to go
to an account or address other than that designated on the Account Information
Form must be in writing and signed by an authorized person designated on the
Account Information Form. Any such written request is also confirmed by
telephone with both the requesting party and the designated bank account to
verify instructions. Exchanges among accounts with different names, addresses
and social security or other taxpayer identification numbers must be in writing
and signed by an authorized person designated on the Account Information Form.
Other procedures may be implemented from time to time. If reasonable procedures
are not implemented, the Trust may be liable for any loss due to unauthorized
or fraudulent transactions. In all other cases, neither the Fund, the Trust nor
Goldman Sachs will be responsible for the authenticity of redemption or
exchange instructions received by telephone. If Goldman Sachs receives a
redemption request by 3:00 p.m. Chicago time, the Administration Shares to be
redeemed earn dividends with respect to the day the request is received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired to the recordholder of Administration Shares. Redemption proceeds
will normally be wired on the next Business Day in Federal Funds (for a total
one-day delay), but may be paid up to seven (7) days after receipt of a
properly executed redemption request. Wiring of redemption proceeds may be
delayed one additional Business Day if the Federal Reserve Bank is closed on
the day redemption proceeds would ordinarily be wired. Once wire transfer
instructions have been given by Goldman Sachs, neither the Fund, the Trust nor
Goldman Sachs assumes any further responsibility for the performance of
intermediaries or the customer's Service Organization in the transfer process.
If a problem with such performance arises, the customer should deal directly
with such intermediaries or Service Organization.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by the Transfer Agent. The
request for such redemption will not be considered to have been received in
proper form until such additional documentation has been submitted to the
Transfer Agent by the recordholder of Administration Shares.
 
  Service Organizations are responsible for the timely transmittal of
redemption requests by their customers to the Transfer Agent. In order to
facilitate timely transmittal of redemption requests, Service Organizations
have established times by which redemption requests must be received by them.
Additional documentation may be required when deemed appropriate by a Service
Organization.
 
  Except with respect to Service Organizations whose account balances are less
than $100, Administration Shares of the Fund are not redeemable at the option
of the Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                       34
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS OTHER THAT THOSE CONTAINED IN THIS
PROSPECTUS, AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST
NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTI-
TUTE AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY ANY SECURITIES
OTHER THAN THE SECURITIES TO WHICH IT RELATES OR AN OFFER TO SELL OR THE SO-
LICITATION OF AN OFFER TO BUY SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH
SUCH OFFER OR SOLICITATION IS UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPEC-
TUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IM-
PLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF THE TRUST OR THE
FUND SINCE THE DATE HEREOF OR THAT THE INFORMATION CONTAINED HEREIN IS CORRECT
AS OF ANY TIME SUBSEQUENT TO ITS DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Summary...................................................................    3
Financial Highlights......................................................    8
Investment Objective and Policies.........................................    9
Investment Adviser........................................................   10
Adjustable and Fixed Rate Mortgage Loans and Mortgage-Backed Securities in
 Which the Fund Will Invest...............................................   11
Yield, Market Value and Risk Considerations of Mortgage-Backed Securities.   16
Other Investments and Practices...........................................   18
Investment Restrictions...................................................   22
Portfolio Turnover........................................................   22
Management................................................................   23
Net Asset Value...........................................................   24
Performance Information...................................................   25
Shares of the Trust.......................................................   26
Taxation..................................................................   28
Additional Information....................................................   29
Administration Plan.......................................................   30
Dividends.................................................................   30
Reports to Shareholders...................................................   31
Purchase of Administration Shares.........................................   31
Exchange Privilege........................................................   33
Redemption of Administration Shares.......................................   33
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                              GS ADJUSTABLE RATE
                            GOVERNMENT AGENCY FUND
                             ADMINISTRATION SHARES
 
                                  MANAGED BY
                                  ----------

                              GOLDMAN SACHS FUNDS
                               MANAGEMENT, L.P.
                                AN AFFILIATE OF
 
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
                                  PROSPECTUS
 
                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                               GS ADJUSTABLE RATE
                             GOVERNMENT AGENCY FUND
                                 SERVICE SHARES
 
                                   MANAGED BY
                                   ----------

                      GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
                                AN AFFILIATE OF
                              GOLDMAN, SACHS & CO.
 
                                  ------------
  GS Adjustable Rate Government Agency Fund (the "Fund") is one fund in a
family of funds advised by Goldman Sachs Funds Management, L.P. (the
"Investment Adviser") or its affiliates, Goldman Sachs Asset Management and
Goldman Sachs Asset Management International. The Fund is organized as a
separate diversified portfolio of Goldman Sachs Trust (the "Trust"), an open-
end, management investment company.
 
  The Fund seeks to provide investors with a high level of current income,
consistent with low volatility of principal. The Fund will seek to achieve its
objective through investment in securities issued or guaranteed by the U.S.
Government, its agencies or instrumentalities. Under normal circumstances, at
least 65% of the Fund's total assets will consist of adjustable rate mortgage
pass-through securities and other mortgage securities with periodic interest
rate resets, which are issued or guaranteed by the U.S. Government, its
agencies or instrumentalities. The Fund may also invest in other mortgage-
backed securities and other obligations issued or guaranteed by the U.S.
Government, its agencies and instrumentalities, as well as repurchase
agreements collateralized by U.S. Government securities. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities.
 
  The Fund seeks to minimize fluctuation in the value of its portfolio
securities and therefore its net asset value. It believes that it can achieve
this objective by investing primarily in guaranteed adjustable rate mortgage-
backed securities, maintaining a maximum duration equal to that of a two-year
U.S. Treasury security and a target duration in a range approximately equal to
that of a 6-month to one-year U.S. Treasury security (computed using the method
described herein) and utilizing certain active management techniques to hedge
interest rate risks and to enhance its return. These techniques include the use
of futures contracts (including options on futures), mortgage and interest rate
swaps and interest rate floors, caps and collars. The Fund's investment in
mortgage-backed securities and the use of active management techniques may
entail certain risks. See "Risk Factors."
                                                        (continued on next page)
 
SERVICE SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR
ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION, AND ARE NOT
INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD
OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN SERVICE SHARES OF THE FUND
INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
                 The date of this Prospectus is March 1, 1995.
<PAGE>
 
  The Fund seeks to provide investors with a higher level of current income
than they could receive from a money market fund. Although the Fund's net asset
value will fluctuate more than that of a portfolio of money market securities,
the Fund will attempt to minimize the effect of interest rate fluctuations on
the Fund's net asset value. See "Risk Factors."
 
  Goldman Sachs Funds Management, L.P., New York, New York, an affiliate of
Goldman, Sachs & Co., serves as the Fund's investment adviser. Goldman, Sachs &
Co. serves as the Fund's distributor and transfer agent. The Trust's custodian
is State Street Bank and Trust Company.
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Service Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from institutions ("Service Organizations") that hold,
directly or through an agent, Service Shares for the benefit of their
customers, or Goldman, Sachs & Co. by calling the telephone number, or writing
to one of the addresses, listed below.
 
GOLDMAN SACHS TRUST                     GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
4900 SEARS TOWER                        INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606                 ONE NEW YORK PLAZA
                                        NEW YORK, NEW YORK 10004
 
 
GOLDMAN, SACHS & CO.                    GOLDMAN, SACHS & CO.   
DISTRIBUTOR                             TRANSFER AGENT          
85 BROAD STREET                         4900 SEARS TOWER        
NEW YORK, NEW YORK 10004                CHICAGO, ILLINOIS 60606 
                                                                
TOLL FREE (IN U.S.).....................800-621-2550
 
                                       2
<PAGE>
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Adjustable Rate Government Agency Fund (the "Fund") is one fund in a
family of funds advised by Goldman Sachs Funds Management, L.P. (the
"Investment Adviser") or its affiliates, Goldman Sachs Asset Management and
Goldman Sachs Asset Management International. The Fund is organized as a
separate diversified portfolio of Goldman Sachs Trust (the "Trust"), an open-
end, management investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The investment objective of the Fund is to provide investors with a high
level of current income, consistent with low volatility of principal. The Fund
seeks to achieve its objective by investing primarily in securities issued or
guaranteed by the U.S. Government, its agencies or instrumentalities. Under
normal circumstances, at least 65% of the Fund's total assets will consist of
adjustable rate mortgage pass-through securities and other mortgage securities
with periodic interest rate resets, which are issued or guaranteed by the U.S.
Government, its agencies or instrumentalities. The Fund may also invest in
other mortgage-backed securities and other obligations issued or guaranteed by
the U.S. Government, its agencies and instrumentalities, as well as repurchase
agreements collateralized by U.S. Government securities. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities.
 
  The Fund may employ certain active management techniques to hedge the
interest rate risks associated with the Fund's portfolio securities, enhance
its return and to minimize fluctuation in its net asset value. These include,
but are not limited to, the use of futures contracts (including options on
futures), mortgage and interest rate swaps and interest rate floors, caps and
collars. The Fund may also utilize portfolio securities lending, mortgage
dollar rolls and repurchase agreements in an attempt to enhance the return
achieved by the Fund. See "Investment Objective and Policies" and "Other
Investments and Practices." There can be no assurance that the Fund will
achieve its investment objective.
 
  The Fund may, for temporary defensive purposes, hold or invest more than 35%
of its total assets in cash, U.S. Treasury securities or high quality money
market instruments, including commercial paper, bankers' acceptances,
repurchase agreements or other debt obligations with a remaining maturity of
one year or less.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Funds Management,
L.P., an affiliate of Goldman, Sachs & Co. ("Goldman Sachs"), serves as the
Fund's investment adviser. The Fund's portfolio is managed by the Investment
Adviser's mortgage-backed securities team, which as of January 31, 1995, was
responsible for managing approximately $5.2 billion in assets. In this
capacity, the Investment Adviser provides investment advisory and
administrative services and receives from the Fund a monthly fee equal on an
annual basis to 0.40% of the Fund's average daily net assets. Goldman Sachs
Funds Management, L.P. is registered with the Securities and Exchange
Commission (the "SEC") as an investment adviser. See "Investment Adviser" and
"Management--Investment Adviser."
 
                                       3
<PAGE>
 
 
                   PURCHASE AND REDEMPTION OF SERVICE SHARES
 
  It is expected that all purchasers of Service Shares of the Fund will be
Service Organizations or their nominees. Customers of Service Organizations may
invest in Service Shares only through their Service Organizations. Service
Shares of the Fund may be purchased by Service Organizations through Goldman
Sachs at the current net asset value per share without the imposition of a
sales load. The Fund does not have any minimum purchase or account requirements
with respect to Service Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Service Shares, and
may establish other requirements such as a minimum account balance. See
"Purchase of Service Shares." The Fund will redeem its Service Shares upon
request of a shareholder on any Business Day at the net asset value next
determined after receipt of such request in proper form. See "Redemption of
Service Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
inquiries from Service Organizations. See "Management--Distributor and Transfer
Agent."
 
                                  RISK FACTORS
 
  GENERAL. While the Fund seeks to provide investors with a high level of
current income, consistent with low volatility of principal, the Fund's current
income and net asset value per share will fluctuate. The inherent volatility
risk of the Fund is such that, during any particular period, if shares of the
Fund are redeemed, an investor could suffer a loss of principal.
 
  INVESTMENT IN MORTGAGE-BACKED SECURITIES GENERALLY. The Fund's investments in
mortgage pass-through securities and other securities representing an interest
in or collateralized by adjustable rate and fixed rate mortgage loans
("Mortgage-Backed Securities") entail certain risks. These risks include the
failure of an issuer or guarantor to meet its obligations, adverse interest
rate changes, adverse economic, real estate or unemployment trends, failures in
connection with processing of transactions and the effects of prepayments on
mortgage cash flows. The Fund's policy of investing primarily in securities
issued or guaranteed by the U.S. Government, its agencies or instrumentalities,
however, is designed to minimize credit and performance related risks otherwise
associated with Mortgage-Backed Securities.
 
  YIELD CHARACTERISTICS. The yield characteristics of the Mortgage-Backed
Securities in which the Fund will invest differ from those of traditional fixed
income securities. The major differences typically include more frequent
interest and principal payments (usually monthly) on Mortgage-Backed
Securities, the adjustability of interest rates, and the possibility that
prepayments of principal may be made at any time.
 
  Prepayment rates are influenced by changes in current interest rates and a
variety of economic, geographic, social and other factors and cannot be
predicted with certainty. Both adjustable rate
 
                                       4
<PAGE>
 
mortgage loans and fixed rate mortgage loans may be subject to a greater rate
of principal prepayments in a declining interest rate environment and to a
lesser rate of principal prepayments in an increasing interest rate
environment. Under certain interest rate and prepayment rate scenarios, the
Fund may fail to recoup fully its investment in some of the Mortgage-Backed
Securities it holds notwithstanding a direct or indirect governmental or agency
guarantee. The Fund's investments in Mortgage-Backed Securities are subject to
more rapid repayment than their stated maturity dates would indicate as a
result of the pass-through of prepayments of principal on the underlying loans.
Such repayment may increase the volatility of an investment in Mortgage-Backed
Securities relative to similarly rated debt securities and, therefore, may
increase the volatility of the Fund's net asset value. The Fund intends to use
hedging techniques to control these risks. See "Investment Objective and
Policies" and "Other Investments and Practices." When the Fund reinvests
amounts representing scheduled payments and unscheduled prepayments of
principal, it may receive a rate of interest that is lower than the rate on its
existing portfolio of adjustable rate mortgage pass-through securities. Thus,
Mortgage-Backed Securities, and adjustable rate mortgage pass-through
securities in particular, may be less effective than other types of U.S.
Government securities as a means of "locking in" interest rates.
 
  MARKET RISKS. The securities in the Fund's portfolio will tend to decrease in
value when interest rates rise and increase in value when interest rates fall.
Because the Fund's investments are interest rate sensitive, the Fund's
performance will depend in large part upon the ability of the Fund to respond
to fluctuations in market interest rates and to utilize appropriate strategies
to maximize returns to the Fund, while attempting to minimize the associated
risks to its invested capital. Operating results will also depend upon the
availability of opportunities for the investment of the Fund's assets,
including purchases and sales of suitable securities.
 
  The market value of the Fund's adjustable rate Mortgage-Backed Securities may
be adversely affected if interest rates increase faster than the rates of
interest payable on such securities or by the adjustable rate mortgage loans
underlying such securities. Furthermore, adjustable rate Mortgage-Backed
Securities or the mortgage loans underlying such securities may contain
provisions limiting the amount by which rates may be adjusted upward and
downward and may limit the amount by which monthly payments may be increased or
decreased to accommodate upward and downward adjustments in interest rates.
These provisions may increase the sensitivity of such Mortgage-Backed
Securities to changes in value resulting from interest rate fluctuations.
 
  Certain adjustable rate mortgage loans may provide for periodic adjustments
of scheduled payments in order to fully amortize the mortgage loan by its
stated maturity. Other adjustable rate mortgage loans may permit such stated
maturity to be extended or shortened in accordance with the portion of each
payment that is applied to interest in accordance with the periodic interest
rate adjustments.
 
  Although having less risk of decline in value during periods of rising
interest rates, adjustable rate Mortgage-Backed Securities have less potential
for capital appreciation than fixed rate Mortgage-Backed Securities, because
their coupon rates will decline in response to market interest rate declines.
The market value of fixed rate Mortgage-Backed Securities may be adversely
affected as a result of increases in interest rates and, because of the risk of
principal prepayments, may benefit less than other fixed rate securities of
similar maturity from declining interest rates. Finally, a higher than
anticipated rate of
 
                                       5
<PAGE>
 
unscheduled principal prepayments on Mortgage-Backed Securities purchased at a
premium or a lower than anticipated rate of unscheduled principal payments on
Mortgage-Backed Securities purchased at a discount may result in a lower yield
than was anticipated at the time the securities were purchased.
 
  OTHER INVESTMENTS AND PRACTICES. The Fund may invest in other instruments,
including obligations of the United States, and notes, bonds and discount notes
of U.S. Government agencies or instrumentalities. The Fund may engage in
certain other investment practices that also involve special risks. These
include, but are not limited to, the use of futures contracts (including
options on futures), mortgage and interest rate swaps and interest rate floors,
caps and collars, making forward commitments, lending portfolio securities and
entering into mortgage dollar rolls and repurchase agreements. See "Other
Investments and Practices."
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, its divisions and
affiliates (including the Investment Adviser), partners and officers, in the
investment activities and business operations of the Fund may present certain
conflicts of interest, as described under "Management--Investment Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends to declare a daily dividend determined with the objective of
distributing the majority of net investment income while enhancing the
stability of principal. Such dividends will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially
all of the Fund's net investment income. From time to time a portion of such
dividends may constitute a return of capital. The Fund also intends that net
realized capital gains, if any, after offset by any available capital loss
carryforwards from prior taxable years, will be declared as a dividend at least
annually. Recordholders of Service Shares will receive dividends in additional
Service Shares of the Fund or may elect to receive cash as described under
"Dividends."
 
                              ADDITIONAL SERVICES
 
  The Trust, on behalf of the Fund, has adopted a Service Plan with respect to
the Service Shares of the Fund which authorizes the Fund to compensate Service
Organizations for providing account administration and shareholder liaison
services to their customers who are the beneficial owners of such Shares. The
Trust, on behalf of the Fund, will enter into agreements with each Service
Organization which will provide for compensation to the Service Organization in
an amount up to 0.50% (on an annualized basis) of the average daily net assets
of the Service Shares of the Fund attributable to or held in the name of the
Service Organization for its customers. See "Additional Services."
 
                                       6
<PAGE>
 
 
                               FEES AND EXPENSES
                               (SERVICE SHARES)*
<TABLE>
<CAPTION>
                                                           GS ADJUSTABLE RATE
                                                         GOVERNMENT AGENCY FUND
                                                         ----------------------
<S>                                                      <C>
SHAREHOLDER TRANSACTION EXPENSES:
    Maximum Sales Load Imposed on Purchases.............          None
    Maximum Sales Load Imposed on Reinvested Dividends..          None
    Redemption Fees.....................................          None
    Exchange Fees.......................................          None
ANNUAL FUND OPERATING EXPENSES:
(AS A PERCENTAGE OF AVERAGE NET ASSETS)
    Management Fees.....................................          0.40%
    Service Fees........................................          0.50%**
    Other Expenses (after expense limitation)...........          0.05%***
                                                                  ----
        TOTAL FUND OPERATING EXPENSES (AFTER EXPENSE
         LIMITATION)....................................          0.95%***
                                                                  ====
</TABLE>

EXAMPLE:
- --------
You would pay the following expenses on a hypothetical $1,000 investment, as-
suming (1) a 5% annual return and (2) redemption at the end of each time peri-
od:

<TABLE>
<CAPTION>
1 YEAR  3 YEARS  5 YEARS  10 YEARS
- ------  -------  -------  --------
<S>     <C>      <C>      <C>
$10      $30      $53      $117
</TABLE>

- --------
 *  The information set forth in the foregoing table and hypothetical example is
    based on estimated amounts for the current year and relates only to Service
    Shares of the Fund. See "Shares of the Trust." Institutional Shares,
    Administration Shares and Class A Shares of the Fund are subject to
    different fees and expenses. Institutional Shares are not subject to any
    administration or service fees. Administration Shares are sold at net asset
    value per share and are subject to an administration fee of up to 0.25% of
    average daily net assets. Class A Shares are sold at net asset value per
    share plus a sales charge of up to 1.5% and are subject to a distribution
    and service fee which is currently limited to 0.25% of average daily net
    assets. All other expenses related to Institutional Shares, Administration
    Shares and Class A Shares are the same as for Service Shares.
 ** Service Organizations (other than broker-dealers) may charge other fees to
    their customers who are beneficial owners of Service Shares in connection
    with their customer accounts. See "Additional Services."
*** The Investment Adviser voluntarily agreed to reduce or limit certain "Other
    Expenses" of the Fund (excluding advisory, distribution and service fees,
    payments to Service Organizations, taxes, interest and brokerage and
    litigation, indemnification and other extraordinary expenses) to the extent
    such expenses exceeded 0.05% per annum of the Fund's average net assets. If
    the Investment Adviser had not agreed to reduce or otherwise limit certain
    "Other Expenses" of the Fund, the Fund's other expenses and total operating
    expenses attributable to Service Shares of the Fund would have been 0.09%
    and 0.99%, respectively. The foregoing table and example also reflect
    current operating expenses that will be applicable on an ongoing basis. See
    "Management--Investment Adviser." Annual operating expenses incurred by the
    Fund during the fiscal year ended October 31, 1994 (expressed as a
    percentage of average daily net assets after fee adjustments) were as
    follows: Management Fees, Service Fees and Other Expenses of 0.40%, 0.50%
    and 0.06%, respectively, for total operating expenses of 0.96%.
    The purpose of the foregoing table is to assist investors in understanding
    the various costs and expenses of the Fund that an investor in the Fund will
    bear directly or indirectly. The costs and expenses included in the table
    and hypothetical example above, which are based on amounts that would have
    been incurred for the fiscal year ended October 31, 1994 had Service Shares
    been issued, should not be considered as representative of past or future
    expenses. Actual fees and expenses may be greater or less than those
    indicated. Moreover while the example assumes a 5% annual return, the Fund's
    actual performance will vary and may result in an actual return greater or
    less than 5%. See "Management" and "Additional Services." Investors should
    be aware that, due to the service fees, a long-term shareholder in the Fund
    may pay over time more than the economic equivalent of the maximum front end
    sales charge permitted under the rules of the National Association of
    Securities Dealers, Inc.
 
                                       7
<PAGE>
 
                              FINANCIAL HIGHLIGHTS
 
          SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  The following data with respect to Institutional Shares and Administration
Shares of the Fund outstanding during the periods indicated has been audited by
Arthur Andersen LLP, independent public accountants, as indicated in their
report incorporated by reference and attached to the Additional Statement from
the Fund's annual report to shareholders for the fiscal year ended October 31,
1994 (the "Annual Report"). This information should be read in conjunction with
the financial statements and related notes incorporated by reference and
attached to the Additional Statement. The Annual Report also contains
performance information and is available upon request and without charge by
writing to any of the addresses on the inside cover of this Prospectus.
 
<TABLE>
<CAPTION>
                                                                        DISTRIBUTIONS
                               INCOME FROM INVESTMENT OPERATIONS       TO SHAREHOLDERS
                           ----------------------------------------- --------------------
                                             NET
                 NET ASSET               REALIZED AND       TOTAL       FROM              NET ASSET            RATIO OF NET
                 VALUE AT     NET         UNREALIZED     INCOME FROM    NET     IN EXCESS VALUE AT             EXPENSES TO
                 BEGINNING INVESTMENT    GAIN (LOSS)     INVESTMENT  INVESTMENT  OF NET      END      TOTAL    AVERAGE NET
                 OF PERIOD   INCOME   ON INVESTMENTS (a) OPERATIONS    INCOME    INCOME   OF PERIOD RETURN (b)    ASSETS
                 --------- ---------- ------------------ ----------- ---------- --------- --------- ---------- ------------
<S>              <C>       <C>        <C>                <C>         <C>        <C>       <C>       <C>        <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
Shares..........  $10.00    $0.4341        $(0.2455)       $0.1886    ($0.4486)      --     $9.74      1.88%       0.46%
1994-
Administration
Shares..........   10.00     0.4211         (0.2572)        0.1639     (0.4239)      --      9.74      1.63        0.71
1993-
Institutional
Shares..........   10.04     0.4397         (0.0376)        0.4021     (0.4397)  (0.0024)   10.00      4.13        0.45
1993-
Administration
Shares (d)......   10.02     0.2146         (0.0173)        0.1973     (0.2146)  (0.0027)   10.00      2.01(f)     0.70(e)
1992-
Institutional
Shares..........   10.03     0.5599         (0.0029)        0.5570     (0.5470)      --     10.04      6.12        0.42
FOR THE PERIOD JULY 17, 1991 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1991-Institu-
tional Shares...   10.00     0.1531          0.0322         0.1853     (0.1553)      --     10.03      2.14(f)     0.20(e)
<CAPTION>
                                                              RATIOS
                                                           ASSUMING NO
                                                            WAIVER OF
                                                          ADVISORY FEES
                                                            OR EXPENSE
                                                            LIMITATION
                                                     ------------------------
                 RATIO OF NET                NET                 RATIO OF NET
                  INVESTMENT              ASSETS AT   RATIO OF    INVESTMENT
                  INCOME TO   PORTFOLIO      END     EXPENSES TO  INCOME TO
                 AVERAGE NET  TURNOVER    OF PERIOD  AVERAGE NET AVERAGE NET
                    ASSETS     RATE(c)    (IN 000'S)   ASSETS       ASSETS
                 ------------ ----------- ---------- ----------- ------------
<S>              <C>          <C>         <C>        <C>         <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
Shares..........     4.38%      37.81%    $ 942,523     0.49%        4.35%
1994-
Administration
Shares..........     4.27       37.81         6,960     0.74         4.24
1993-
Institutional
Shares..........     4.36      103.74     2,760,871     0.48         4.33
1993-
Administration
Shares (d)......     3.81(e)   103.74         5,326     0.73(e)      3.78(e)
1992-
Institutional
Shares..........     5.61      286.40     2,145,064     0.55         5.48
FOR THE PERIOD JULY 17, 1991 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1991-Institu-
tional Shares...     7.31(e)   145.67(e)    239,642     1.02(e)      6.49(e)
</TABLE>
- ----
(a) Includes balancing effect of calculating per share amounts.
(b) Assumes investment at the net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(c) Includes the effect of mortgage dollar roll transactions.
(d) Administration share activity commenced on April 15, 1993.
(e) Annualized.
(f) Not annualized.
 
                                       8
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a high level of
current income, consistent with low volatility of principal. The Fund seeks to
achieve its objective through investment in securities issued or guaranteed by
the U.S. Government, its agencies or instrumentalities. Under normal
circumstances, at least 65% of the Fund's total assets will consist of
adjustable rate mortgage pass-through securities and other mortgage securities
with periodic interest rate resets, which are issued or guaranteed by the U.S.
Government, its agencies or instrumentalities. The primary issuers or
guarantors of such securities currently include the Government National
Mortgage Association ("Ginnie Mae"), the Federal National Mortgage Association
("Fannie Mae") and the Federal Home Loan Mortgage Corporation ("Freddie Mac"),
although the Fund may invest in securities issued or guaranteed by other
agencies or instrumentalities in the future. The Fund may invest up to 35% of
its total assets in other Mortgage-Backed Securities and other obligations
issued or guaranteed by the U.S. Government, its agencies or instrumentalities,
as well as repurchase agreements collateralized by U.S. Government securities.
The Fund may, for temporary defensive purposes, hold or invest more than 35% of
its total assets in cash, U.S. Treasury securities or high quality money market
instruments, including commercial paper, bankers' acceptances, repurchase
agreements or other debt obligations with a remaining maturity of one year or
less. Under normal circumstances, substantially all of the Fund's assets will
be invested in securities issued or guaranteed by the U.S. Government, its
agencies or instrumentalities.
 
  The Fund may also employ certain active management techniques to hedge the
interest rate risks associated with the Fund's portfolio securities, to
minimize fluctuation in its net asset value and to enhance its return. These
techniques include, but are not limited to, futures contracts (including
options on futures), mortgage and interest rate swaps and interest rate floors,
caps and collars. The Fund may also employ other investment techniques to
enhance returns, such as loans of portfolio securities, mortgage dollar rolls
and repurchase agreements.
 
  The Fund will maintain a maximum duration approximately equal to that of a
two-year U.S. Treasury security. Under normal interest rate conditions, the
Fund's actual duration is expected to be in a range approximately equal to that
of a 6-month to one-year U.S. Treasury security. The Fund's duration is a
measure of the price sensitivity of the portfolio, including expected cash flow
and mortgage prepayments under a wide range of interest rate scenarios.
Maturity measures only the time until final payment is due on a bond or other
debt security; it takes no account of the pattern of a security's cash flows
over time, including how cash flow is affected by prepayments and by changes in
interest rates. In computing the duration of its portfolio, the Fund will have
to estimate the duration of obligations that are subject to prepayment or
redemption by the issuer taking into account the influence of interest rates on
prepayments and coupon flows. This method of computing duration is known as
option-adjusted duration. The Fund may use various techniques to shorten or
lengthen the option-adjusted duration of its portfolio, including the use of
futures contracts (including options on futures), the acquisition of debt
obligations at a premium or discount, mortgage and interest rate swaps and
interest rate floors, caps and collars.
 
  When interest rates decline, the value of a portfolio invested in fixed rate
debt securities can be expected to rise. Conversely, when interest rates rise,
the value of a portfolio invested in fixed rate debt securities can be expected
to decline. In contrast, since interest rates on adjustable rate mortgage loans
are reset periodically, yields of portfolio securities representing interests
in such loans will gradually align themselves to reflect changes in market
interest rates, causing the value of such securities to fluctuate less
dramatically in response to interest rate fluctuations than would fixed rate
debt securities. The
 
                                       9
<PAGE>
 
Investment Adviser expects the Fund's net asset value to be relatively stable
during normal market conditions. This is because the Fund's portfolio will
consist primarily of guaranteed adjustable rate Mortgage-Backed Securities and
because the Fund will maintain a maximum option-adjusted duration approximately
equal to that of a two-year U.S. Treasury security and will utilize certain
interest rate hedging techniques. However, a sudden and extreme increase in
prevailing interest rates may cause a decline in the Fund's net asset value.
Conversely, a sudden and extreme decline in interest rates could result in an
increase in the Fund's net asset value.
 
  Except as otherwise stated under "Investment Restrictions," the Fund's
investment objective and policies are not fundamental and may be changed
without a vote of shareholders. If there is a change in the Fund's investment
objective, shareholders should consider whether the Fund remains an appropriate
investment in light of their then current financial positions and needs. There
can be no assurance that the Fund will be successful in achieving its
investment objective. An investment in shares of the Fund does not constitute a
complete investment program. Investors may wish to complement an investment in
the Fund with other types of investments.
 
                               INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Funds Management, L.P., an
affiliate of Goldman Sachs. The management services provided by the Investment
Adviser are subject to the general supervision of the Trust's Board of
Trustees. The Investment Adviser and its affiliates serve a wide range of
clients including private and public pension funds, endowments, foundations,
banks, thrifts, insurance companies, corporations, and private investors and
family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and market expertise
of Goldman Sachs, whose investment research effort is one of the largest in the
industry. The in-depth information and analyses generated by Goldman Sachs'
research analysts, economists and portfolio strategists are available to the
Investment Adviser.
 
                                       10
<PAGE>
 
                 ADJUSTABLE AND FIXED RATE MORTGAGE LOANS AND 
           MORTGAGE-BACKED SECURITIES IN WHICH THE FUND WILL INVEST
 
THE NATURE OF ADJUSTABLE AND FIXED RATE MORTGAGE LOANS
 
  The following is a general description of the adjustable and fixed rate
mortgage loans which may be expected to underlie the Mortgage-Backed Securities
in which the Fund will invest. Since a wide variety of mortgage loans are
available to borrowers, the actual mortgage loans underlying any particular
issue of Mortgage-Backed Securities may differ materially from those described
below. In addition, the Fund will be permitted to invest in Mortgage-Backed
Securities that become available in the future to the extent such investments
are consistent with its investment objective and policies.
 
  ADJUSTABLE RATE MORTGAGE LOANS ("ARMS"). ARMs included in a mortgage pool
will generally provide for a fixed initial mortgage interest rate for a
specified period of time. Thereafter, the interest rates (the "Mortgage
Interest Rates") may be subject to periodic adjustment based on changes in the
applicable index rate (the "Index Rate"). The adjusted rate would be equal to
the Index Rate plus a gross margin, which is a fixed percentage spread over the
Index Rate established for each ARM at the time of its origination.
 
  Adjustable interest rates can cause payment increases that some mortgagors
may find difficult to make. However, certain ARMs may provide that the Mortgage
Interest Rate may not be adjusted to a rate above an applicable lifetime
maximum rate or below an applicable lifetime minimum rate for such ARM. Certain
ARMs may also be subject to limitations on the maximum amount by which the
Mortgage Interest Rate may adjust for any single adjustment period (the
"Maximum Adjustment"). Other ARMs ("Negatively Amortizing ARMs") may provide
instead or as well for limitations on changes in the monthly payment on such
ARMs. Limitations on monthly payments can result in monthly payments which are
greater or less than the amount necessary to amortize a Negatively Amortizing
ARM by its maturity at the Mortgage Interest Rate in effect in any particular
month. In the event that a monthly payment is not sufficient to pay the
interest accruing on a Negatively Amortizing ARM, any such excess interest is
added to the principal balance of the loan, causing negative amortization, and
will be repaid through future monthly payments. It may take borrowers under
Negatively Amortizing ARMs longer periods of time to achieve equity and may
increase the likelihood of default by such borrowers. In the event that a
monthly payment exceeds the sum of the interest accrued at the applicable
Mortgage Interest Rate and the principal payment which would have been
necessary to amortize the outstanding principal balance over the remaining term
of the loan, the excess (or "accelerated amortization") further reduces the
principal balance of the ARM. Negatively Amortizing ARMs do not provide for the
extension of their original maturity to accommodate changes in their Mortgage
Interest Rate. As a result, unless there is a periodic recalculation of the
payment amount (which there generally is), the final payment may be
substantially larger than the other payments. These limitations on periodic
increases in interest rates and on changes in monthly payments protect
borrowers from unlimited interest rate and payment increases.
 
  There are two main categories of indices which provide the basis for rate
adjustments on ARMs: those based on U.S. Treasury securities and those derived
from a calculated measure such as a cost of funds index or a moving average of
mortgage rates. Commonly utilized indices include the one-year, three-year and
five-year constant maturity Treasury rates, the three-month Treasury Bill rate,
the 180-day Treasury Bill rate, rates on longer-term Treasury securities, the
11th District Federal Home Loan Bank Cost of Funds, the National Median Cost of
Funds, the one-month, three-month, six-month or one year London Interbank
Offered Rate ("LIBOR"), the prime rate of a specific bank, or commercial paper
rates. Some indices, such as the one-year constant maturity Treasury rate,
closely mirror changes in market
 
                                       11
<PAGE>
 
interest rate levels. Others, such as the 11th District Federal Home Loan Bank
Cost of Funds index, tend to lag behind changes in market rate levels and tend
to be somewhat less volatile. The degree of volatility in the market value of
the Fund's portfolio and therefore in the net asset value of the Fund's shares
will be a function of the length of the interest rate reset periods and the
degree of volatility in the applicable indices.
 
  FIXED RATE MORTGAGE LOANS. Generally, fixed rate mortgage loans included in a
mortgage pool (the "Fixed Rate Mortgage Loans") will bear simple interest at
fixed annual rates and have original terms to maturity ranging from 5 to 40
years. Fixed Rate Mortgage Loans generally provide for monthly payments of
principal and interest in substantially equal installments for the term of the
mortgage note in sufficient amounts to fully amortize principal by maturity,
although certain fixed rate mortgage loans provide for a large final "balloon"
payment upon maturity.
 
  REGULATION OF MORTGAGE LOANS. Mortgage loans are subject to a variety of
state and federal laws and regulations designed to protect mortgagors, which
may impair the ability of the mortgage lender to enforce its rights under the
mortgage documents. These laws and regulations include legal restraints on
foreclosures, homeowner rights of redemption after foreclosure, federal and
state bankruptcy and debtor relief laws, restrictions on enforcement of
mortgage loan "due on sale" clauses and state usury laws. Even though the Fund
may invest in Mortgage-Backed Securities issued or guaranteed by the U.S.
Government, its agencies or instrumentalities, these regulations may adversely
affect the Fund's investments by delaying the Fund's receipt of payments
derived from principal of or interest on mortgage loans affected by such laws
and regulations.
 
MORTGAGE-BACKED SECURITIES
 
  CHARACTERISTICS OF MORTGAGE-BACKED SECURITIES. Mortgage-Backed Securities are
securities that directly or indirectly represent participations in, or are
collateralized by and payable from, mortgage loans secured by real property.
The investment characteristics of adjustable and fixed rate Mortgage-Backed
Securities differ from those of traditional fixed income securities. The major
differences include the payment of interest and principal on Mortgage-Backed
Securities on a more frequent (usually monthly) schedule, and the possibility
that principal may be prepaid at any time due to prepayments on the underlying
mortgage loans or other assets. These differences can result in significantly
greater price and yield volatility than is the case with traditional fixed
income securities. As a result, if the Fund purchases Mortgage-Backed
Securities at a premium, a faster than expected prepayment rate will reduce
both the market value and the yield to maturity from those which were
anticipated. A prepayment rate that is slower than expected will have the
opposite effect of increasing yield to maturity and market value. Conversely,
if the Fund purchases Mortgage-Backed Securities at a discount, faster than
expected prepayments will increase, while slower than expected prepayments will
reduce, yield to maturity and market value. The Investment Adviser will seek to
manage these potential risks and benefits by investing in a variety of
Mortgage-Backed Securities and by using certain hedging techniques. See "Other
Investments and Practices."
 
  Prepayments on a pool of mortgage loans are influenced by a variety of
factors, including economic conditions, changes in mortgagors' housing needs,
job transfers, unemployment, mortgagors' net equity in the mortgaged properties
and servicing decisions. The timing and level of prepayments cannot be
 
                                       12
<PAGE>
 
predicted. Generally, however, prepayments on adjustable rate mortgage loans
and fixed rate mortgage loans will increase during a period of falling mortgage
interest rates and decrease during a period of rising mortgage interest rates.
Accordingly, the amounts of prepayments available for reinvestment by the Fund
are likely to be greater during a period of declining mortgage interest rates.
If general interest rates also decline, such prepayments are likely to be
reinvested at lower interest rates than the Fund was earning on the Mortgage-
Backed Securities that were prepaid.
 
GUARANTEED MORTGAGE-BACKED SECURITIES IN WHICH THE FUND INVESTS
 
  All of the Fund's investments in Mortgage-Backed Securities will be issued or
guaranteed by the U.S. Government or one of its agencies or instrumentalities,
including but not limited to, Ginnie Mae, Fannie Mae and Freddie Mac. Ginnie
Mae securities are backed by the full faith and credit of the U.S. Government,
which means that the U.S. Government guarantees that the interest and principal
will be paid when due. Fannie Mae securities and Freddie Mac securities are not
backed by the full faith and credit of the U.S. Government; however, the
ability of these agencies to borrow from the U.S. Treasury makes their
securities high quality securities with minimal credit risks. There are several
types of guaranteed Mortgage-Backed Securities currently available, including
guaranteed mortgage pass-through certificates and multiple-class securities,
which include guaranteed Real Estate Mortgage Investment Conduit ("REMIC")
pass-through certificates and stripped Mortgage-Backed Securities. The Fund
will be permitted to invest in other types of Mortgage-Backed Securities that
may be available in the future to the extent investment in such securities is
consistent with its investment policies and objective, which require the Fund
to invest primarily in guaranteed adjustable rate Mortgage-Backed Securities.
 
1. GUARANTEED MORTGAGE PASS-THROUGH SECURITIES
 
  GINNIE MAE CERTIFICATES. Ginnie Mae is a wholly-owned corporate
instrumentality of the United States. Ginnie Mae is authorized to guarantee the
timely payment of the principal of and interest on certificates that are based
on and backed by a pool of mortgage loans insured by the Federal Housing
Administration ("FHA Loans"), or guaranteed by the Veterans Administration ("VA
Loans"), or by pools of other eligible mortgage loans. In order to meet its
obligations under any guaranty, Ginnie Mae is authorized to borrow from the
United States Treasury in an unlimited amount.
 
  FANNIE MAE CERTIFICATES. Fannie Mae is a stockholder-owned corporation
chartered under an act of the United States Congress. Each Fannie Mae
Certificate is issued and guaranteed by Fannie Mae and represents an undivided
interest in a pool of mortgage loans (a "Pool") formed by Fannie Mae. Each Pool
consists of residential mortgage loans ("Mortgage Loans") either previously
owned by Fannie Mae or purchased by it in connection with the formation of the
Pool. The Mortgage Loans may be either conventional Mortgage Loans (i.e., not
insured or guaranteed by any U.S. Government agency) or Mortgage Loans that are
either insured by the Federal Housing Administration ("FHA") or guaranteed by
the Veterans Administration ("VA"). However, the mortgage loans in Fannie Mae
Pools are primarily conventional Mortgage Loans. The lenders originating and
servicing the Mortgage Loans are subject to certain eligibility requirements
established by Fannie Mae.
 
  Fannie Mae has certain contractual responsibilities. With respect to each
Pool, Fannie Mae is obligated to distribute scheduled monthly installments of
principal and interest after Fannie Mae's servicing and guaranty fee, whether
or not received, to Certificate holders. Fannie Mae also is obligated
 
                                       13
<PAGE>
 
to distribute to holders of Certificates an amount equal to the full principal
balance of any foreclosed Mortgage Loan, whether or not such principal balance
is actually recovered. The obligations of Fannie Mae under its guaranty of the
Fannie Mae Certificates are obligations solely of Fannie Mae.
 
  FREDDIE MAC CERTIFICATES. Freddie Mac is a publicly-held U.S. Government
sponsored enterprise. The principal activity of Freddie Mac currently is the
purchase of first lien, conventional, residential mortgage loans and
participation interests in such mortgage loans and their resale in the form of
mortgage securities, primarily Freddie Mac Certificates. A Freddie Mac
Certificate represents a pro rata interest in a group of mortgage loans or
participations in mortgage loans (a "Freddie Mac Certificate group") purchased
by Freddie Mac.
 
  Freddie Mac guarantees to each registered holder of a Freddie Mac Certificate
the timely payment of interest at the rate provided for by such Freddie Mac
Certificate (whether or not received on the underlying loans). Freddie Mac also
guarantees to each registered Certificate-holder ultimate collection of all
principal of the related mortgage loans, without any offset or deduction, but
does not, generally, guarantee the timely payment of scheduled principal. The
obligations of Freddie Mac under its guaranty of Freddie Mac Certificates are
obligations solely of Freddie Mac.
 
  CONVENTIONAL MORTGAGE LOANS. The conventional mortgage loans underlying the
Freddie Mac and Fannie Mae Certificates will consist of adjustable rate or
fixed rate mortgage loans with original terms to maturity of between five and
thirty years. Substantially all of these mortgage loans are secured by first
liens on one- to four-family residential properties or multi-family projects.
Each mortgage loan must meet the applicable standards set forth in the law
creating Freddie Mac or Fannie Mae. A Freddie Mac Certificate group may include
whole loans, participation interests in whole loans and undivided interests in
whole loans and participations comprising another Freddie Mac Certificate
group.
 
2. MULTIPLE CLASS PASS-THROUGH SECURITIES AND COLLATERALIZED MORTGAGE
OBLIGATIONS
 
  The Fund may also invest in multiple class securities issued by U.S.
Government agencies and instrumentalities such as Fannie Mae or Freddie Mac,
including guaranteed collateralized mortgage obligations ("CMOs") and REMIC
pass-through or participation certificates. A REMIC is a CMO that qualifies for
special tax treatment under the Internal Revenue Code of 1986, as amended (the
"Code"), and invests in certain mortgages principally secured by interests in
real property and other permitted investments.
 
  CMOs and guaranteed REMIC pass-through certificates ("REMIC Certificates")
issued by Fannie Mae and Freddie Mac are types of multiple class pass-through
securities. Investors may purchase beneficial interests in REMICs, which are
known as "regular" interests or "residual" interests. The Fund does not intend
to purchase residual interests in REMICs. The REMIC Certificates represent
beneficial ownership interests in a REMIC trust, generally consisting of
mortgage loans or Fannie Mae, Freddie Mac or Ginnie Mae guaranteed mortgage
pass-through certificates (the "Mortgage Assets"). The obligations of Fannie
Mae or Freddie Mac under their respective guaranty of the REMIC Certificates
are obligations solely of Fannie Mae or Freddie Mac, respectively.
 
  Fannie Mae REMIC Certificates are issued and guaranteed as to timely
distribution of principal and interest by Fannie Mae. In addition, Fannie Mae
will be obligated to distribute the principal balance of each class of REMIC
Certificates in full, whether or not sufficient funds are otherwise available.
 
                                       14
<PAGE>
 
  For Freddie Mac REMIC Certificates, Freddie Mac guarantees the timely payment
of interest, and also guarantees the payment of principal as payments are
required to be made on the underlying mortgage participation certificates
("PCs"). PCs represent undivided interests in specified level payment,
residential mortgages or participations therein purchased by Freddie Mac and
placed in a PC pool. With respect to principal payments on PCs, Freddie Mac
generally guarantees ultimate collection of all principal of the related
mortgage loans without offset or deduction. Freddie Mac also guarantees timely
payment of principal on certain PCs.
 
  CMOs and REMIC Certificates are issued in multiple classes. Each class of
CMOs or REMIC Certificates, often referred to as a "tranche," is issued at a
specific adjustable or fixed interest rate and must be fully retired no later
than its final scheduled distribution date. Principal prepayments on the
Mortgage Loans or the Mortgage Assets underlying the CMOs or REMIC Certificates
may cause some or all of the classes of CMOs or REMIC Certificates to be
retired substantially earlier than their final distribution dates. Generally,
interest is paid or accrues on all classes of CMOs or REMIC Certificates on a
monthly basis.
 
  The principal of and interest on the Mortgage Assets may be allocated among
the several classes of CMOs or REMIC Certificates in various ways. In certain
structures (known as "sequential pay" CMOs or REMIC Certificates), payments of
principal, including any principal prepayments, on the Mortgage Assets
generally are applied to the classes of CMOs or REMIC Certificates in the order
of their respective final distribution dates. Thus no payment of principal will
be made on any class of sequential pay CMOs or REMIC Certificates until all
other classes having an earlier final distribution date have been paid in full.
 
  Additional structures of CMOs and REMIC Certificates include, among others,
"parallel pay" CMOs and REMIC Certificates. Parallel pay CMOs or REMIC
Certificates are those which are structured to apply principal payments and
prepayments of the Mortgage Assets to two or more classes concurrently on a
proportionate or disproportionate basis. These simultaneous payments are taken
into account in calculating the final distribution date of each class.
 
  A wide variety of REMIC Certificates may be issued in the parallel pay or
sequential pay structures. These securities include accrual certificates (also
known as "Z-Bonds"), which only accrue interest at a specified rate until all
other certificates having an earlier final distribution date have been retired
and are converted thereafter to an interest-paying security, and planned
amortization class ("PAC") certificates, which are parallel pay REMIC
Certificates which generally require that specified amounts of principal be
applied on each payment date to one or more classes of REMIC Certificates (the
"PAC Certificates"), even though all other principal payments and prepayments
of the Mortgage Assets are then required to be applied to one or more other
classes of the Certificates. The scheduled principal payments for the PAC
Certificates generally have the highest priority on each payment date after
interest due has been paid to all classes entitled to receive interest
currently. Shortfalls, if any, are added to the amount payable on the next
payment date. The PAC Certificate payment schedule is taken into account in
calculating the final distribution date of each class of PAC. In order to
create PAC tranches, one or more tranches generally must be created that absorb
most of the volatility in the underlying mortgage assets. These tranches tend
to have market prices and yields that are much more volatile than the PAC
classes.
 
3. STRIPPED MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in stripped mortgage-backed securities ("SMBS"), which
are derivative multiclass mortgage securities. The Fund may only invest in SMBS
issued or guaranteed by the U.S. Government, its agencies or instrumentalities.
 
                                       15
<PAGE>
 
  SMBS are usually structured with two classes that receive different
proportions of the interest and principal distributions from a pool of Mortgage
Assets. A common type of SMBS will have one class receiving all of the interest
from the Mortgage Assets, while the other class will receive all of the
principal. However, in some instances, one class will receive some of the
interest and most of the principal while the other class will receive most of
the interest and the remainder of the principal. If the underlying Mortgage
Assets experience greater than anticipated prepayments of principal, the Fund
may fail to fully recoup its initial investment in these securities. Although
the market for such securities is increasingly liquid, certain SMBS may not be
readily marketable and will be considered illiquid for purposes of the Fund's
limitation on investments in illiquid securities. The market value of the class
consisting entirely of principal payments generally is unusually volatile in
response to changes in interest rates. The yields on a class of SMBS that
receives all or most of the interest from Mortgage Assets are generally higher
than prevailing market yields on other Mortgage-Backed Securities because their
cash flow patterns are more volatile and there is a greater risk that the
initial investment will not be fully recouped. The Investment Adviser will seek
to manage these risks (and potential benefits) by investing in a variety of
such securities and by using certain hedging techniques. See "Other Investments
and Practices."
 
                 YIELD, MARKET VALUE AND RISK CONSIDERATIONS OF
                           MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in certain Mortgage-Backed Securities, such as interest-
only and principal-only SMBS, that are extremely sensitive to changes in
prepayments and interest rates. Even though such securities have been issued or
guaranteed by an agency or instrumentality of the U.S. Government, under
certain interest rate or prepayment rate scenarios, the Fund may fail to fully
recover its investment in such securities.
 
  The investment characteristics of Mortgage-Backed Securities differ from
those of traditional fixed income securities. The major differences typically
include more frequent interest and principal payments, usually monthly, and the
possibility that unscheduled prepayments of principal may be made at any time.
Prepayment rates are influenced by changes in current interest rates and a
variety of economic, geographic, social and other factors and cannot be
predicted with certainty. As with fixed rate mortgage loans, adjustable rate
mortgage loans may be subject to a greater prepayment rate in a declining
interest rate environment. The yields to maturity of the Mortgage-Backed
Securities in which the Fund invests will be affected by the actual rate of
payment (including prepayments) of principal of the underlying mortgage loans.
The mortgage loans underlying such securities generally may be prepaid at any
time without penalty. In a fluctuating interest rate environment, a predominant
factor affecting the prepayment rate on a pool of mortgage loans is the
difference between the interest rates on the mortgage loans and prevailing
mortgage loan interest rates (giving consideration to the cost of any
refinancing). In general, if interest rates on new mortgage loans fall
sufficiently below the interest rates existing on fixed rate mortgage loans
underlying mortgage pass-through securities, the rate of prepayment would be
expected to increase. Conversely, if mortgage loan interest rates rise above
the interest rates on the fixed rate mortgage loans underlying the mortgage
pass-through securities, the rate of prepayment may be expected to decrease.
 
  The rate of principal prepayments with respect to ARMs has fluctuated in
recent years. As is the case with fixed rate mortgage loans, ARMs may be
subject to a greater rate of principal prepayments in a declining interest rate
environment. For example, if prevailing interest rates fall significantly, ARMs
could
 
                                       16
<PAGE>
 
be subject to higher prepayment rates than if prevailing interest rates remain
constant because the availability of fixed rate mortgage loans at competitive
interest rates may encourage mortgagors to refinance their ARMs to "lock-in" a
lower fixed interest rate. Conversely, if prevailing interest rates rise
significantly, ARMs may prepay at lower rates than if prevailing rates remain
at or below those in effect at the time such ARMs were originated due, for
example, to the unavailability of lower rate alternatives. As with fixed rate
mortgages, there can be no certainty as to the rate of prepayments on the ARMs
in either stable or changing interest rate environments. In addition, there can
be no certainty as to whether increases in the principal balances of the ARMs
due to the addition of deferred interest may result in a default rate higher
than that on ARMs that do not provide for negative amortization. Other factors
affecting prepayment of ARMs include changes in mortgagors' housing needs, job
transfers, unemployment, mortgagors' net equity in the mortgage properties and
servicing decisions.
 
  The Fund's reinvestment of principal payments and prepayments received on a
mortgage pass-through security may be made at rates higher or lower than the
rate payable on such security, thus affecting the return realized by the Fund.
In addition, the receipt of interest payments monthly rather than semi-annually
by the Fund has a compounding effect that may increase the yield to the Fund
relative to debt obligations that pay interest semi-annually. Due to these
factors, Mortgage-Backed Securities may also be less effective than U.S.
Treasury securities of similar maturity at maintaining yields during periods of
changing interest rates. Prepayments may have a disproportionate effect on
certain Mortgage-Backed Securities such as SMBS and certain other multiple
class pass-through securities. The Fund may purchase Mortgage-Backed Securities
at a premium or at a discount.
 
  RISKS ASSOCIATED WITH DERIVATIVE MORTGAGE-BACKED SECURITIES. Derivative
Mortgage-Backed Securities are subject to different combinations of interest
rate and/or prepayment risks. In addition, particular derivative securities may
be leveraged such that their exposure (i.e., price sensitivity) to interest
rate and/or prepayment risk is magnified. The Investment Adviser may use
derivative Mortgage-Backed Securities and other derivative securities
consistent with the Fund's investment objective for a variety of purposes
including adjusting the average duration or interest rate sensitivity of the
Fund's portfolio or attempting to enhance the Fund's total return. The
Investment Adviser manages the risks and benefits of derivative Mortgage-Backed
Securities and other derivative securities by prudent analysis, selection and
monitoring of such securities included in the Fund's portfolio.
 
  The risk of faster than anticipated prepayments generally adversely affects
interest-only securities (IOs), super floaters and premium priced Mortgage-
Backed Securities. The risk of slower than anticipated prepayments generally
adversely affects principal-only securities (POs), floating rate securities
subject to interest rate caps, support tranches and discount priced Mortgage-
Backed Securities.
 
  RISKS ASSOCIATED WITH OTHER DERIVATIVE FLOATING RATE SECURITIES. Other types
of floating rate derivative securities present more complex types of interest
rate risks. For example, range floaters are subject to the risk that the coupon
will be reduced to below market rates if a designated interest rate floats
outside of a specified interest rate band or collar. Dual index or yield curve
floaters are subject to lower prices in the event of an unfavorable change in
the spread between two designated interest rates.
 
                                       17
<PAGE>
 
                        OTHER INVESTMENTS AND PRACTICES
 
  INVERSE FLOATING RATE SECURITIES. The Fund may invest in leveraged inverse
floating rate debt instruments ("inverse floaters"). The interest rate on an
inverse floater resets in the opposite direction from the market rate of
interest to which the inverse floater is indexed. An inverse floater may be
considered to be leveraged to the extent that its interest rate varies by a
magnitude that exceeds the magnitude of the change in the index rate of
interest. The higher degree of leverage inherent in inverse floaters is
associated with greater volatility in their market values. Accordingly, the
duration of an inverse floater may exceed its stated final maturity. Certain
inverse floaters may be deemed to be illiquid securities for purposes of the
Fund's 15% limitation on investments in such securities.
 
  OTHER INVESTMENTS. The Fund may also invest in other instruments including
obligations of the United States, notes, bonds, and discount notes of other
U.S. Government agencies or instrumentalities, including but not limited to:
Federal National Mortgage Association, Government National Mortgage
Association, Federal Home Loan Mortgage Corporation, Federal Home Loan Banks,
Bank for Cooperatives, Farm Credit Banks, Tennessee Valley Authority, Federal
Financing Bank, Small Business Administration and Federal Agricultural Mortgage
Corporation.
 
  INTEREST RATE SWAPS, MORTGAGE SWAPS, CAPS, FLOORS AND COLLARS. The Fund may
enter into interest rate swaps and mortgage swaps for hedging purposes and to
increase total return. The Fund may also enter into other types of interest
rate swap arrangements such as caps, floors and collars. Interest rate swaps
involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, e.g., an exchange of floating rate
payments for fixed rate payments. Mortgage swaps are similar to interest rate
swaps in that they represent commitments to pay and receive interest. The
notional principal amount, however, is tied to a reference pool or pools of
mortgages. The purchase of an interest rate cap entitles the purchaser, to the
extent that a specified index exceeds a predetermined interest rate, to receive
payment of interest on a notional principal amount from the party selling such
interest rate cap. The purchase of an interest rate floor entitles the
purchaser, to the extent that a specified index falls below a predetermined
interest rate, to receive payment of interest on a notional principal amount
from the party selling such interest rate floor. An interest rate collar is the
combination of a cap and a floor that preserves a certain return within a
predetermined range of interest rates. Since interest rate swaps, mortgage
swaps, caps, floors and collars are individually negotiated, the Fund expects
to achieve an acceptable degree of correlation between its portfolio
investments and its swap, cap, floor and collar positions entered into for
hedging purposes.
 
  The Fund will enter into interest rate swaps and mortgage swaps only on a net
basis, which means that the two payment streams are netted out, with the Fund
receiving or paying, as the case may be, only the net amount of the two
payments. Interest rate swaps and mortgage swaps do not involve the delivery of
securities, other underlying assets or principal. Accordingly, the risk of loss
with respect to interest rate swaps and mortgage swaps is limited to the net
amount of payments that the Fund is contractually obligated to make. If the
other party to an interest rate swap or mortgage swap defaults, the Fund's risk
of loss consists of the net amount of payments that the Fund is contractually
entitled to receive, if any. To the extent the net amount of an interest rate
swap or mortgage swap is held in a segregated account, consisting of cash and
liquid, high grade debt securities, the Fund and the Investment Adviser believe
that swaps do not constitute senior securities under the Investment Company Act
of 1940, as amended (the "Act") and, accordingly, will not treat them as being
subject to the Fund's borrowing restriction.
 
                                       18
<PAGE>
 
  The Fund will not enter into any interest rate swap, mortgage swap, or
interest rate cap, floor or collar transactions unless the unsecured commercial
paper, senior debt or claims paying ability of the other party is rated either
AA or A-1 or better by Standard & Poor's Ratings Group ("S&P") or Aa or P-1 or
better by Moody's Investors Service, Inc. ("Moody's"), or, if unrated by such
rating organizations, determined to be of comparable quality by the Investment
Adviser.
 
  The use of interest rate swaps and mortgage swaps, as well as interest rate
floors, caps and collars, is a highly specialized activity which involves
investment techniques and risks different from those associated with ordinary
portfolio securities transactions. If the Investment Adviser is incorrect in
its forecasts of market values and interest rates, the investment performance
of the Fund would be less favorable than it would have been if these investment
techniques were not used. The staff of the SEC considers interest rate swaps
and mortgage swaps, as well as interest rate caps, floors and collars, to be
illiquid securities for purposes of the Fund's 15% limitation on illiquid
investments.
 
  FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS.  To hedge against changes
in interest rates or securities prices or to seek to increase total return, the
Fund may purchase and sell various kinds of futures contracts, and purchase and
write call and put options on any of such futures contracts. The Fund will
engage in futures and related options transactions only for bona fide hedging
purposes as defined in regulations of the Commodity Futures Trading Commission
or to seek to increase total return to the extent permitted by such
regulations.
 
  The Fund may not purchase or sell futures contracts or purchase or sell
related options to increase total return, except for closing purchase or sale
transactions, if immediately thereafter the sum of the amount of initial margin
deposits and premiums paid on the Fund's outstanding positions in futures and
related options entered into for the purpose of seeking to increase total
return would exceed 5% of the market value of the Fund's net assets.
Transactions in futures contracts and options on futures involve brokerage
costs, require margin deposits and, in the case of contracts and options
obligating the Fund to purchase securities, require the Fund to segregate cash
and liquid, high-grade debt securities with a value equal to the amount of the
Fund's obligations.
 
  While transactions in futures contracts and options on futures may reduce
certain risks, such transactions themselves entail certain other risks. See
"Investment Objectives and Policies--Futures Contracts and Options on Futures
Contracts" in the Additional Statement. Thus, while the Fund may benefit from
the use of futures and options on futures, unanticipated changes in interest
rates or securities prices may result in a poorer overall performance for the
Fund than if it had not entered into any futures contracts or options
transactions. The loss incurred by the Fund in writing options on futures is
potentially unlimited and may exceed the amount of the premium received.
 
  The use of futures may increase the volatility of the Fund's net asset value.
The profitability of the Fund's trading in futures to increase total return
will depend on the Investment Adviser's ability to correctly analyze the
futures markets. In addition, because of the low margin deposits normally
required in futures trading, a relatively small price movement in a futures
contract may result in substantial losses to the Fund. Further, futures trading
may be illiquid, and exchanges may limit fluctuations in futures contract
prices during a single day.
 
                                       19
<PAGE>
 
  In the event of an imperfect correlation between a futures position and a
portfolio position which is intended to be protected, the desired protection
may not be obtained and the Fund may be exposed to risk of loss. Perfect
correlation between the Fund's futures positions and portfolio positions will
be impossible to achieve. The Fund's transactions in options and futures
contracts may be limited by the requirements of the Code, for qualification as
a regulated investment company.
 
  RISKS OF DERIVATIVE TRANSACTIONS.  The Fund's transactions in interest rate
and mortgage swaps, interest rate caps, floors and collars, futures and options
on futures involve certain risks, including a possible lack of correlation
between changes in the value of hedging instruments and the portfolio assets
being hedged, the potential illiquidity of the markets for derivative
instruments, the risks arising from the margin requirements and related
leverage factors associated with such transactions. The use of these management
techniques to seek to increase total return also involves the risk of loss if
the Investment Adviser is incorrect in its expectation of fluctuations in
securities prices or interest rates.
 
  LENDING OF PORTFOLIO SECURITIES. The Fund may also seek to increase its
income by lending portfolio securities. Under present regulatory policies, such
loans may be made to institutions, such as certain broker-dealers, and are
required to be secured continuously by collateral in cash, cash equivalents or
U.S. Government securities maintained on a current basis in an amount at least
equal to the market value of the securities loaned. Cash collateral may be
invested in cash equivalents. If the Investment Adviser determines to make
securities loans, the value of the securities loaned may not exceed 33 1/3% of
the value of the total assets of the Fund. See "Investment Restrictions" in the
Additional Statement. The Fund may experience a loss or delay in the recovery
of its securities if the institution with which it has engaged in a portfolio
loan transaction breaches its agreement with the Fund.
 
  WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase
securities on a when-issued basis. When-issued transactions arise when
securities are purchased by the Fund with payment and delivery taking place in
the future in order to secure what is considered to be an advantageous price
and yield to the Fund at the time of entering into the transaction. The Fund
may also purchase securities on a forward commitment basis. In a forward
commitment transaction, the Fund contracts to purchase securities for a fixed
price at a future date beyond customary settlement time. The Fund is required
to hold and maintain in a segregated account until the settlement date cash or
liquid, high-grade debt obligations in an amount sufficient to meet the
purchase price. Alternatively, the Fund may enter into offsetting contracts for
the forward sale of other securities that it owns. The purchase of securities
on a when-issued or forward commitment basis involves a risk of loss if the
value of the security to be purchased declines prior to the settlement date.
Although the Fund would generally purchase securities on a when-issued or
forward commitment basis with the intention of actually acquiring securities
for its portfolio, the Fund may dispose of a when-issued security or forward
commitment prior to settlement if the Investment Adviser deems it appropriate
to do so.
 
  MORTGAGE DOLLAR ROLLS. The Fund may enter into mortgage "dollar rolls" in
which the Fund sells securities for delivery in the current month and
simultaneously contracts with the same counterparty to repurchase similar (same
type, coupon and maturity), but not identical securities on a specified future
date. During the roll period, the Fund loses the right to receive principal and
interest paid on the securities sold. However, the Fund would benefit to the
extent of any difference between the price received for the securities sold and
the lower forward price for the future purchase (often referred to as the
"drop") or fee income plus the interest earned on the cash proceeds of the
securities sold until the settlement date
 
                                       20
<PAGE>
 
of the forward purchase. Unless such benefits exceed the income, capital
appreciation and gain or loss due to mortgage prepayments that would have been
realized on the securities sold as part of the mortgage dollar roll, the use of
this technique will diminish the investment performance of the Fund compared
with what such performance would have been without the use of mortgage dollar
rolls. All cash proceeds will be invested in instruments that are permissible
investments for the Fund. The Fund will hold and maintain in a segregated
account until the settlement date cash or liquid, high-grade debt securities in
an amount equal to the forward purchase price.
 
  For financial reporting and tax purposes, the Fund treats mortgage dollar
rolls as two separate transactions; one involving the purchase of a security
and a separate transaction involving a sale. The Fund does not currently intend
to enter into mortgage dollar rolls that are accounted for as a financing.
 
  Mortgage dollar rolls involve certain risks including the following: if the
broker-dealer to whom the Fund sells the security becomes insolvent, the Fund's
right to purchase or repurchase the mortgage-related securities subject to the
mortgage dollar roll may be restricted and the instrument which the Fund is
required to repurchase may be worth less than an instrument which the Fund
originally held. Successful use of mortgage dollar rolls will depend upon the
Investment Adviser's ability to manage its interest rate and mortgage
prepayments exposure. For these reasons, there is no assurance that mortgage
dollar rolls can be successfully employed.
 
  REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with
dealers in U.S. Government securities and member banks of the Federal Reserve
System which furnish collateral at least equal in value or market price to the
amount of their repurchase obligation. In a repurchase agreement, the Fund
purchases a debt security from a seller which undertakes to repurchase the
security at a specified resale price on an agreed future date (ordinarily a
week or less). The resale price generally exceeds the purchase price by an
amount which reflects an agreed-upon market interest rate for the term of the
repurchase agreement. The primary risk is that, if the seller defaults, the
Fund might suffer a loss to the extent that the proceeds from the sale of the
underlying securities and other collateral held by the Fund in connection with
the related repurchase agreement are less than the repurchase price. Repurchase
agreements maturing in more than seven days are considered by the Fund to be
illiquid. In addition, the Fund, together with other registered investment
companies having advisory agreements with the Investment Adviser or any of its
affiliates, may transfer uninvested cash balances into a single joint account,
the daily aggregate balance of which will be invested in one or more repurchase
agreements.
 
  ILLIQUID SECURITIES. The Fund will not invest more than 15% of its net assets
in securities which are illiquid, including securities that are not readily
marketable, repurchase agreements maturing in more than seven days, interest
rate and mortgage swaps, interest rate caps, floors and collars, certain SMBS
and securities that are restricted as to resale. However, a restricted security
is not considered to be illiquid if the Trustees of the Trust determine, based
upon the Investment Adviser's continuing review of the trading markets for the
specific restricted security, under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale under Rule 144A under the
Securities Act of 1933 is liquid. In addition, a repurchase agreement which by
its terms can be liquidated before its nominal fixed term on seven days or less
notice is regarded as a liquid instrument. Subject to the 15% limitation on
illiquid securities investments, the Fund may acquire U.S. Government
securities in a private placement.
 
                                       21
<PAGE>
 
  Since it is not possible to predict with assurance exactly how this market
for restricted securities sold and offered under Rule 144A will develop, the
Board of Trustees will carefully monitor the Fund's investments in these
securities, focusing on such important factors, among others, as valuation,
credit quality, liquidity and availability of information. This investment
practice could have the effect of increasing the level of illiquidity in the
Fund to the extent that qualified institutional buyers become for a time
uninterested in purchasing these restricted securities.
 
  OTHER INVESTMENT COMPANIES. The Fund reserves the right to invest up to 10%
of its total assets, calculated at the time of purchase, in the securities of
other investment companies, including business development companies and small
business investment companies. The Fund may not invest more than 5% of its
total assets in the securities of any one investment company or acquire more
than 3% of the voting securities of any other investment company. Pursuant to
an exemptive order obtained from the SEC, other investment companies in which
the Fund may invest include money market funds for which the Investment Adviser
or any of its affiliates serves as investment adviser. The Fund will indirectly
bear its proportionate share of any management fees and other expenses paid by
investment companies in which it invests in addition to the advisory fees paid
by the Fund. However, to the extent that the Fund invests in a money market
fund for which the Investment Adviser or any of its affiliates acts as adviser,
the advisory fees payable by the Fund to the Investment Adviser will be reduced
by an amount equal to the Fund's proportionate share of the advisory fees paid
by such money market fund to the Investment Adviser or any of its affiliates.
 
                            INVESTMENT RESTRICTIONS
 
  The Fund is subject to certain investment restrictions which, as described in
more detail in the Additional Statement, are fundamental policies that cannot
be changed without the approval of a majority of the outstanding shares of the
Fund. Among other restrictions, the Fund may not, with respect to 75% of its
total assets, purchase securities of any one issuer (other than securities
issued or guaranteed by the U.S. Government, its agencies or instrumentalities)
if more than 5% of its total assets would be invested in such issuer, or invest
more than 25% of its total assets in the securities of issuers (other than
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities) in any one industry. The Fund may borrow money but only as a
temporary measure for extraordinary or emergency purposes, provided that the
Fund maintains asset coverage of 300% for all such borrowings. As a matter of
non-fundamental policy, the Fund may not purchase securities while such
borrowings exceed 5% of the value of the Fund's total assets.
 
                               PORTFOLIO TURNOVER
 
  It is anticipated that the portfolio turnover rate of the Fund will vary from
year to year. The portfolio turnover rate is computed by dividing the lesser of
the amount of securities purchased or securities sold (excluding all securities
whose maturities at acquisition are one year or less) by the average monthly
value of such securities owned during the year. A 100% turnover rate would
occur, for example, if all of the securities held by the Fund were sold and
replaced within one year. The Investment Adviser will not consider the
portfolio turnover rate a limiting factor in making investment decisions for
the Fund consistent with the Fund's investment objective and portfolio
management policies. A higher rate of portfolio turnover results in increased
transaction costs to the Fund. The portfolio turnover rate includes the effect
of entering into mortgage dollar rolls.
 
                                       22
<PAGE>
 
                                   MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct and supervise the Fund's
daily business operations. The Additional Statement contains information as to
the identity of, and other information about, the Trustees and officers of the
Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Funds Management, L.P., One New York Plaza, New York, New York
10004, a Delaware limited partnership which is an affiliate of Goldman Sachs,
acts as the investment adviser of the Fund. Goldman Sachs Funds Management,
L.P. was registered as an investment adviser in 1990. As of January 31, 1995,
the Investment Adviser, together with its affiliates, acted as investment
adviser, administrator or distributor for approximately $48.7 billion in
assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Funds
Management, L.P., subject to the general supervision of the Board of Trustees,
manages the Fund's portfolio and provides for the administration of all of the
Fund's other affairs. It is the responsibility of the Investment Adviser to
make investment decisions for the Fund and to place purchase and sale orders
for the Fund's portfolio transactions. Such orders may be directed to any
broker including, to the extent and in the manner permitted by applicable law,
Goldman Sachs or its affiliates. Goldman Sachs has agreed to permit the Fund to
use the name "Goldman Sachs" or a derivative thereof as part of the Fund's name
for as long as the Investment Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Jonathan A. Beinner and Theodore T. Sotir.
Mr. Beinner specializes in investing in a particular type of security the Fund
may hold. Mr. Sotir helps with overall portfolio strategy and is a member of
the Investment Adviser's risk control team. Mr. Beinner joined the Investment
Adviser in 1990 and is currently a Vice President, after working in the trading
and arbitrage group of Franklin Savings Association. Mr. Sotir joined the
Investment Adviser in 1993 and is currently a Vice President, after working as
a portfolio manager at Fidelity Management Trust Company. Prior to joining
Fidelity, Mr. Sotir worked for Goldman Sachs in the mortgage securities
department for six years.
 
  As compensation for the services rendered to the Fund by the Investment
Adviser pursuant to the Investment Advisory Agreement, and the assumption by
the Investment Adviser of the expenses related thereto, the Fund pays the
Investment Adviser a fee, computed daily and payable monthly, at an annual rate
equal to 0.40% of the Fund's average daily net assets. For the fiscal year
ended October 31, 1994, the Fund paid an advisory fee to the Investment Adviser
equal to 0.40% of the Fund's average daily net assets.
 
  The Investment Adviser has voluntarily agreed to reduce or otherwise limit
certain expenses of the Fund (excluding advisory, distribution and service
fees, payments to Service Organizations (as defined below), taxes, interest and
brokerage and litigation, indemnification and other extraordinary expenses) to
 
                                       23
<PAGE>
 
the extent such expenses exceed 0.05% annually of the Fund's average net
assets. Such reductions or limits, if any, are calculated monthly on a
cumulative basis and may be discontinued or modified by the Investment Adviser
at its discretion at any time. The Investment Adviser has also agreed to reduce
its fees payable (to the extent of such fees) by the amount the Fund's expenses
would, absent the fee reduction, exceed the applicable expense limitations
imposed by state securities administrators. See "Management--Expenses" in the
Additional Statement.
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser, Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts and
other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities and instruments as
the Fund. Goldman Sachs and its affiliates will not have any obligation to make
available any information regarding their proprietary activities or strategies,
or the activities or strategies used for other accounts managed by them, for
the benefit of the management of the Fund and it is not anticipated that the
Investment Adviser will have access to proprietary information for the purpose
of managing the Fund. The results of the Fund's investment activities,
therefore, may differ from those of Goldman Sachs and its affiliates and it is
possible that the Fund could sustain losses during periods in which Goldman
Sachs and its affiliates and other accounts achieve significant profits on
their trading for proprietary or other accounts. From time to time, the Fund's
activities may be limited because of regulatory restrictions applicable to
Goldman Sachs and its affiliates, and/or their internal policies designed to
comply with such restrictions. See "Activities of Goldman Sachs and its
Affiliates and Other Accounts Managed by Goldman Sachs" in the Additional
Statement for further information.
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact Goldman
Sachs (as Transfer Agent) at the address or the telephone number set forth on
the inside front cover page of this Prospectus.
 
                                NET ASSET VALUE
 
  The net asset value per share is calculated by the Fund's custodian as of the
close of regular trading on the New York Stock Exchange (normally 3:00 p.m.
Chicago time, 4:00 p.m. New York time), immediately after determination of the
income to be declared as a dividend on each Business Day (as such term is
defined under "Additional Information"). Net asset value per share of each
class is calculated by determining the net assets attributable to each class
and dividing by the number of outstanding shares of that class.
 
                                       24
<PAGE>
 
  Investments in Mortgage-Backed Securities and other debt obligations are
valued at fair value, based on yield equivalents, a pricing matrix or other
sources, under valuation procedures established by the Trust's Board of
Trustees. Other portfolio securities for which accurate market quotations are
readily available are valued on the basis of quotations furnished by pricing
services or provided by dealers in such securities. Portfolio securities for
which accurate market quotations are not readily available are valued in
accordance with the Trust's valuation procedures. Debt obligations with a
remaining maturity of 60 days or less are valued at amortized cost. The Board
of Trustees has determined that the amortized cost of such securities
approximates fair market value.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish yield and average annual total return
in advertisements and communications to shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most recent
calendar quarter, assuming reinvestment of all dividends and distributions at
net asset value. The total return calculation assumes a complete redemption of
the investment at the end of the relevant period. The Fund may also from time
to time advertise total return on a cumulative, average, year-by-year or other
basis for various specified periods by means of quotations, charts, graphs or
schedules. In addition to the above, the Fund may from time to time advertise
its performance relative to certain performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value for the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided in
shareholder reports, the Fund may, in its discretion, from time to time make a
list of its holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of shares in existence. Because each class of shares may be subject
to different expenses, the yield, total return and distribution rate
calculations with respect to each class of shares of the Fund for the same
period will differ. Due to the fees payable under the Distribution Plan,
Service Plan and the Administration Plan, the investment performance, for any
period, of the Institutional Shares will always be higher than that of the
 
                                       25
<PAGE>
 
Class A Shares, Service Shares and the Administration Shares. The investment
performance of the Administration Shares will always be higher than that of the
Service Shares. The investment performance of the Class A Shares will be
affected by the payment of a sales charge. Without giving effect to sales
charges, the investment performance of Class A Shares will be identical to the
Administration Shares as long as Goldman Sachs continues to limit its fee under
the Distribution Plan to 0.25% of the average daily net assets attributable to
Class A Shares. See "Shares of the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement the Trustees are
authorized to issue an unlimited number of shares of beneficial interest, $.001
par value per share. The Trustees of the Trust are responsible for the overall
management and supervision of its affairs. The Trustees of the Trust have
authority under the Trust Agreement to create and classify shares of beneficial
interest in separate series, without further action by shareholders. As of the
date of this Prospectus, the Trustees have authorized shares of the Fund and
ten other series. Additional series may be added in the future. The Trustees
also have authority to classify or reclassify any series or portfolio of shares
into one or more classes. Pursuant thereto, the Trustees have authorized the
issuance of four classes of shares of the Fund. These classes are:
Institutional Shares, Administration Shares, Service Shares and Class A Shares.
As of October 31, 1994, no Service Shares or Class A Shares of the Fund were
outstanding.
 
  Each Institutional Share, Administration Share, Service Share and Class A
Share of the Fund represents an equal proportionate interest in the assets
belonging to the Fund. All Fund expenses are based on a percentage of the
Fund's aggregate average net assets, except that the respective fees under
Administration, Service and Distribution Plans relating to a particular class
will be borne exclusively by that class. It is contemplated that most
Administration Shares and Service Shares will be held in accounts of which the
record owner is a bank or other institution acting, directly or through an
agent, as nominee for its customers who are the beneficial owners of the shares
or another organization designated by such bank or institution. Administration
Shares and Service Shares will each be marketed only to such institutional
investors, at net asset value with no sales load. Institutional Shares may be
purchased for accounts in the name of an investor or institution that is not
compensated by the Fund for services provided to the institution's customers.
Administration Shares may be purchased for accounts held in the name of an
institution that provides certain account administration services to its
customers, including maintenance of account records and processing orders to
purchase, redeem or exchange Administration Shares. Administration Shares bear
the cost of account administration fees at the annual rate of up to 0.25% of
the average daily net assets of such Administration Shares. Service Shares may
be purchased for accounts held in the name of an institution that provides
certain account administration and shareholder liaison services to its
customers, including maintenance of account records and processing orders to
purchase, redeem or exchange Service Shares, responding to customer inquiries
and assisting customers with investment procedures. Service Shares bear the
cost of service fees at the annual rate of up to 0.50% of the average daily net
assets of such Service Shares. (Institutions that provide services to holders
of Administration or Service Shares are referred to in this Prospectus as
"Service Organizations"). Class A Shares of a Fund may be bought at net asset
value plus a sales charge of up to
 
                                       26
<PAGE>
 
1.5% of the purchase price through Goldman Sachs and certain investment
dealers, including members of the National Association of Securities Dealers,
Inc. ("NASD") and certain other financial service firms that have entered into
a sales agreement with Goldman Sachs ("Authorized Dealers"). The minimum
investment requirements, services, programs and purchase and redemption options
for shares purchased through a particular Authorized Dealer may be different
from those available to investors purchasing through other Authorized Dealers.
Class A Shares bear the cost of distribution and service fees at the annual
rate of up to 0.50% of the average daily net asset of such Class A Shares.
Goldman Sachs has agreed to limit the amount of the distribution and service
fees payable by the Fund to 0.25% of its average daily net assets attributable
to Class A Shares. Goldman Sachs has no current intention of modifying or
discontinuing such limitation, but may do so in the future at its discretion.
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration, Service and Class A
Shares) to its customers and thus receive different compensation with respect
to different classes of shares of the Fund. Administration Shares, Service
Shares and Class A Shares may each have certain exclusive voting rights on
matters relating to their respective plans. Shares of each class may be
exchanged only for shares of the same class in another fund and certain money
market funds sponsored by Goldman Sachs. The Fund may amend such policy in the
future. Dividends paid by the Fund, if any, with respect to each class of
shares will be calculated in the same manner, at the same time on the same day
and will be in the same amount, except for differences caused by the fact that
the respective fees under Administration, Service and Distribution Plans
relating to a particular class will be borne exclusively by that class.
Similarly, the net asset value per share will vary depending on the class of
shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or conversion rights.
 
  Under Massachusetts law, there is a remote possibility that shareholders of a
business trust could, under certain circumstances, be held personally liable as
partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
  Unless otherwise required by the Act, ordinarily it will not be necessary for
the Trust to hold annual meetings of shareholders. As a result, shareholders
may not consider each year the election of Trustees or the appointment of
independent accountants. Shareholders may remove a Trustee by the affirmative
vote of at least two-thirds of the Trust's outstanding shares and the Trustees
must promptly call a meeting
 
                                       27
<PAGE>
 
for such purpose when requested to do so in writing by the record holders of
not less than 10% of the outstanding shares of the Trust. Shareholders may,
under certain circumstances, communicate with other shareholders in connection
with requesting a special meeting of shareholders. The Board of Trustees,
however, will call a special meeting for the purpose of electing Trustees if,
at any time, less than a majority of Trustees holding office at the time were
elected by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue share
certificates. Instead, the Transfer Agent maintains a record of each
shareholder's ownership. Each shareholder receives confirmation of purchase and
redemption orders from the Transfer Agent. Shares and any dividends and
distributions paid by the Fund are reflected in account statements from the
Transfer Agent.
 
                                    TAXATION
 
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code and intends to continue to qualify for such treatment.
To qualify for treatment as a regulated investment company, the Fund must
satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
  Dividends paid by the Fund from net investment income, the excess of net
short-term capital gain over net long-term capital loss and original issue
discount or certain market discount income will be taxable to shareholders as
ordinary income. Dividends paid by the Fund from the excess of net long-term
capital gain over net short-term capital loss will be taxable as long-term
capital gains regardless of how long the shareholders have held their shares.
These tax consequences will apply regardless of whether distributions are
received in cash or reinvested in shares. Certain distributions paid by the
Fund in January of a given year may be taxable to shareholders as if received
the prior December 31. Shareholders will be informed annually about the amount
and character of distributions received from the Fund for federal income tax
purposes.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
when received even though the distribution represents a return of a portion of
the purchase price.
 
  Redemptions and exchanges of shares are taxable events on which a shareholder
may recognize a gain or loss.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on distributions, redemptions and
exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other shareholders
that are not U.S. persons under the Code are subject to different tax rules and
may be subject to nonresident alien withholding at the rate of 30% (or a lower
rate provided by an applicable tax treaty) on amounts treated as ordinary
dividends from the Fund.
 
                                       28
<PAGE>
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local or
foreign taxes on payments received from the Fund. A state income (and possibly
local income and/or intangible property) tax exemption is generally available
to the extent the Fund's distributions are derived from interest on (or, in the
case of intangibles taxes, the value of its assets is attributable to) certain
U.S. Government obligations, provided in some states that certain thresholds
for holdings of such obligations and/or reporting requirements are satisfied.
 
  Shareholders should consult their own tax advisers with respect to the
federal, state, local and foreign tax consequences of investing in the Fund in
their particular circumstances. See the Additional Statement for a further
discussion of certain tax consequences of investing in shares of the Fund.
 
                             ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at the meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days when
the Investment Adviser, The Northern Trust Company, State Street Bank and Trust
Company and the Federal Reserve Bank of New York are open for business, which
is Monday through Friday except for holidays. Such holidays currently are: New
Year's Day (observed), Martin Luther King Day, Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Columbus Day,
Thanksgiving and Christmas. On those days when one or more of such
organizations close early as a result of such day being a partial holiday or
otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                       29
<PAGE>
 
                              ADDITIONAL SERVICES
 
  The Trust, on behalf of the Fund, has adopted a Service Plan with respect to
the Service Shares which authorizes the Fund to compensate Service
Organizations for providing account administration and personal and account
maintenance services to their customers who are beneficial owners of such
Shares. The Trust, on behalf of the Fund, will enter into agreements with
Service Organizations which purchase Service Shares on behalf of their
customers ("Service Agreements"). The Service Agreements will provide for
compensation to the Service Organizations in an amount up to 0.50% (on an
annualized basis) of the average daily net assets of the Service Shares of the
Fund attributable to or held in the name of the Service Organization for its
customers; provided, however, that the fee paid for personal and account
maintenance services shall not exceed 0.25% of such average daily net assets.
The services provided by the Service Organizations may include acting, directly
or through an agent, as the sole shareholder of record, maintaining account
records for customers, processing orders to purchase, redeem or exchange
Service Shares for customers, responding to inquiries from prospective and
existing shareholders and assisting customers with investment procedures.
 
  Had Service Shares been outstanding during the fiscal year ended October 31,
1994, the Trust, on behalf of the Fund, would have paid the Service
Organizations fees at an annual rate of 0.50% of the Fund's average daily net
assets attributable to the Service Shares.
 
  Holders of Service Shares of the Fund will bear all expenses and fees paid to
Service Organizations for their services with respect to such Shares as well as
any other expenses which are directly attributable to such Shares.
 
  Service Organizations (other than broker-dealers) may charge other fees to
their customers who are the beneficial owners of Service Shares in connection
with their customer accounts. These fees would be in addition to any amounts
received by the Service Organization under a Service Agreement and may affect
the return earned on an investment in the Fund. The Trust, on behalf of the
Fund, will accrue payments made pursuant to a Service Agreement daily. All
inquiries of beneficial owners of Service Shares should be directed to such
owners' Service Organization.
 
                                   DIVIDENDS
 
  The Fund intends to declare a daily dividend determined with the objective of
distributing the majority of net investment income while enhancing the
stability of principal. Such dividend will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially all
of the Fund's net investment income. From time to time a portion of such
dividends may constitute a return of capital. The Fund also intends that all net
realized long-term and short-term capital gains will be declared as a dividend
at least annually. In determining amounts of capital gains to be distributed,
capital losses including any available capital loss carryovers from prior years
will be offset against capital gains.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination is
made as of 3:00 p.m. Chicago time.
 
                                       30
<PAGE>
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case payment
will be made on the first Business Day of the succeeding month. Payment of
dividends with respect to capital gains, if any, when declared will be made in
additional shares of the Fund at the net asset value on the payment date,
unless cash distributions are elected. This election to receive dividends in
cash is initially made on the Account Information Form and may be changed upon
written notice to the Transfer Agent at any time prior to the record date for a
particular dividend or distribution. If cash dividends are elected with respect
to the Fund's monthly net investment income dividends then cash dividends must
also be elected with respect to the non-long term capital gains component, if
any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or unrealized appreciation of the Fund's portfolio securities. Therefore,
subsequent distributions (or portions thereof) on such shares may be taxable to
the investor even if the net asset value of the shares is, as a result of the
distributions, reduced below the cost of such shares and the distributions (or
portions thereof) represent a return of a portion of the purchase price.
 
                            REPORTS TO SHAREHOLDERS
 
  Recordholders of Service Shares of the Fund will receive an annual report
containing audited financial statements and a semi-annual report. Each
recordholder of Service Shares will also be provided with a printed
confirmation for each transaction in its account and a monthly account
statement. A year-to-date statement for any account will be provided to a
Service Organization upon request made to Goldman Sachs.
 
  Service Organizations will be responsible for providing services similar to
those described above to their customers who are beneficial owners of such
Shares. For example, Service Organizations are responsible for providing each
customer exercising investment discretion with monthly statements with respect
to such customer's account in lieu of an immediate confirmation of each
transaction.
 
                           PURCHASE OF SERVICE SHARES
 
  It is expected that all direct purchasers of Service Shares of the Fund will
be Service Organizations or their nominees. Customers of Service Organizations
may invest in Service Shares only through their Service Organizations. Service
Shares of the Fund may be purchased by a Service Organization through Goldman
Sachs at the net asset value per share next determined after receipt from a
Service Organization of an order without the imposition of a sales load. If, by
3:00 p.m. Chicago time (4:00 p.m. New York time), an order, a check or a
Federal Reserve draft is received from a Service Organization by Goldman Sachs,
the price per share will be the net asset value per share computed on the day
the purchase order or such form of payment is received. See "Net Asset Value."
 
PURCHASE PROCEDURES
 
  Purchases of Service Shares by a Service Organization may be made by placing
an order with Goldman Sachs at 800-621-2550 and either wiring Federal Funds to
The Northern Trust Company
 
                                       31
<PAGE>
 
("Northern") as subcustodian for State Street Bank and Trust Company ("State
Street") on the next Business Day or initiating an ACH transfer to ensure
receipt by Northern on the next Business Day. Purchases may also be made by a
Service Organization by check (except that a check drawn on a foreign bank will
not be accepted) or Federal Reserve draft made payable to "Goldman Sachs
Trust--GS Adjustable Rate Government Agency Fund" and should be directed to
Goldman Sachs Trust--GS Adjustable Rate Government Agency Fund, c/o GSAM
Shareholder Services, 4900 Sears Tower, Chicago, Illinois 60606. Payment of the
proceeds of redemption of shares purchased by check may be delayed for a period
of time as described under "Redemption of Service Shares."
 
  The Service Organizations are responsible for the timely transmittal of
purchase orders to Goldman Sachs and payments to Northern or Goldman Sachs. In
order to facilitate timely transmittal, the Service Organizations have
established times by which purchase orders and payments must be received by
them.
 
OTHER PURCHASE INFORMATION
 
  The Fund does not have any minimum purchase or account requirements with
respect to Service Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Service Shares, and
may establish other requirements such as a minimum account balance. A Service
Organization may effect redemptions of noncomplying accounts, and may impose a
charge for any special services rendered to its customers. Customers should
contact their Service Organization for further information concerning such
requirements and charges.
 
  The Fund reserves the right to redeem Service Shares of any Service
Shareholder whose account balance is less than $100 as a result of earlier
redemptions. Such redemptions will not be implemented if the value of such
Shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days prior written
notice to Service Shareholders whose Service Shares are being redeemed to allow
them to purchase sufficient additional Service Shares to avoid such redemption.
 
PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is received
from a Service Organization by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and dividends will begin on such shares on the
next Business Day, provided that a Federal Funds wire or an ACH transfer is
received by Northern on such day.
 
PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a Service Organization's check
or Federal Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago
time, the purchased shares will be issued and dividends will begin on such
shares on the next Business Day after the Service Organization's check or
Federal Reserve draft is received by Goldman Sachs.
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges of
Service Shares by a particular purchaser (or group of related purchasers). The
Fund or Goldman Sachs may reject or restrict purchases or exchanges of Service
Shares by a particular purchaser or group, for example, when a pattern of
frequent purchases and sales or exchanges of Service Shares of the Fund is
evident, or if the purchase, sale or exchange orders are, or a subsequent
abrupt redemption might be, of a size that would disrupt management of the
Fund.
 
                                       32
<PAGE>
 
                               EXCHANGE PRIVILEGE
 
  Service Shares of the Fund may be exchanged by Service Organizations for (i)
Service Shares of any other mutual fund sponsored by Goldman Sachs and
designated as an eligible fund for this purpose and (ii) the relevant class of
any portfolio of Goldman Sachs Money Market Trust at the net asset value next
determined either by writing to Goldman Sachs, Attention: Goldman Sachs Trust--
GS Adjustable Rate Government Agency Fund, c/o GSAM Shareholder Services, 4900
Sears Tower, Chicago, Illinois 60606 or, if previously elected in the Fund's
Account Information Form, by telephone at 800-621-2550 (7:00 a.m. to 3:00 p.m.
Chicago time). A shareholder should obtain and read the prospectus relating to
any other fund and its shares or units and consider its investment objective,
policies and applicable fees before making an exchange. Service Shares acquired
by telephone exchange must be registered in the same name(s) and have the same
address as Service Shares of the Fund for which the exchange is being made.
 
  In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Service Shares" to confirm that
such instructions are genuine. For federal income tax purposes, an exchange is
treated as a sale of the Service Shares surrendered in the exchange, on which
an investor may realize a gain or loss, followed by a purchase of Service
Shares or the relevant class of any portfolio of Goldman Sachs Money Market
Trust received in the exchange. Shareholders should consult their own tax
advisers concerning the tax consequences of an exchange. Exchanges are
available only in states where exchanges may legally be made. The exchange
privilege may be modified or withdrawn at any time on sixty (60) days' written
notice to recordholders of Service Shares and is subject to certain
limitations. See "Purchase of Service Shares."
 
                          REDEMPTION OF SERVICE SHARES
 
  The Fund will redeem its Service Shares upon request of the recordholder of
such Shares on any Business Day at the net asset value next determined after
the receipt by the Transfer Agent of such request in proper form. See "Net
Asset Value." If Service Shares to be redeemed were recently purchased by
check, the Fund may delay transmittal of redemption proceeds until such time as
it has assured itself that good funds have been collected for the purchase of
such Service Shares. This may take up to fifteen (15) days. Redemption requests
may be made by writing to or calling the Transfer Agent at the address or
telephone number set forth on the inside front cover page of this Prospectus. A
Service Organization may request redemptions by telephone if the optional
telephone redemption privilege is elected on the Account Information Form. It
may be difficult to implement redemptions by telephone in times of drastic
economic or market changes. In an effort to prevent unauthorized or fraudulent
redemption or exchange requests by telephone, Goldman Sachs employs reasonable
procedures specified by the Trust to confirm that such instructions are
genuine. Among other things, any redemption request that requires money to go
to an account or address other than that designated on the Account Information
Form must be in writing and signed by an authorized person designated on the
Account Information Form. Any such written request is also confirmed by
telephone with both the requesting party and the designated bank account to
verify instructions. Exchanges among accounts with different names, addresses
and social security or other taxpayer identification numbers must be in writing
and signed by an authorized person designated on the Account Information Form.
Other procedures may be
 
                                       33
<PAGE>
 
implemented from time to time. If reasonable procedures are not implemented,
the Trust may be liable for any loss due to unauthorized or fraudulent
transactions. In all other cases, neither the Fund, the Trust nor Goldman Sachs
will be responsible for the authenticity of redemption or exchange instructions
received by telephone. If Goldman Sachs receives a redemption request by 3:00
p.m. Chicago time, the Service Shares to be redeemed earn dividends with
respect to the day the request is received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired to the recordholder of Service Shares. Redemption proceeds will
normally be wired on the next Business Day in Federal Funds (for a total one-
day delay), but may be paid up to seven (7) days after receipt of a properly
executed redemption request. Wiring of redemption proceeds may be delayed one
additional Business Day if the Federal Reserve Bank is closed on the day
redemption proceeds would ordinarily be wired. Once wire transfer instructions
have been given by Goldman Sachs, neither the Fund, the Trust nor Goldman Sachs
assumes any further responsibility for the performance of intermediaries or the
customer's Service Organization in the transfer process. If a problem with such
performance arises, the customer should deal directly with such intermediaries
or Service Organization.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by the Transfer Agent. The
request for such redemption will not be considered to have been received in
proper form until such additional documentation has been submitted to the
Transfer Agent by the recordholder of Service Shares.
 
  Service Organizations are responsible for the timely transmittal of
redemption requests by their customers to the Transfer Agent. In order to
facilitate timely transmittal of redemption requests, Service Organizations
have established times by which redemption requests must be received by them.
Additional documentation may be required when deemed appropriate by a Service
Organization.
 
  Except with respect to Service Shareholders whose account balances are less
than $100, Service Shares of the Fund are not redeemable at the option of the
Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                       34
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Summary...................................................................    3
Financial Highlights......................................................    8
Investment Objective and Policies.........................................    9
Investment Adviser........................................................   10
Adjustable and Fixed Rate Mortgage Loans and Mortgage-Backed Securities in
 Which the Fund Will Invest...............................................   11
Yield, Market Value and Risk Considerations of Mortgage-Backed Securities.   16
Other Investments and Practices...........................................   18
Investment Restrictions...................................................   22
Portfolio Turnover........................................................   22
Management................................................................   23
Net Asset Value...........................................................   24
Performance Information...................................................   25
Shares of the Trust.......................................................   26
Taxation..................................................................   28
Additional Information....................................................   29
Additional Services.......................................................   30
Dividends.................................................................   30
Reports to Shareholders...................................................   31
Purchase of Service Shares................................................   31
Exchange Privilege........................................................   33
Redemption of Service Shares..............................................   33
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                              GS ADJUSTABLE RATE
                            GOVERNMENT AGENCY FUND
                                SERVICE SHARES
 
                                  MANAGED BY
                                  ----------

                              GOLDMAN SACHS FUNDS
                               MANAGEMENT, L.P.
                                AN AFFILIATE OF
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
                                  PROSPECTUS
 
                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                                 GS SHORT-TERM
                             GOVERNMENT AGENCY FUND
                              INSTITUTIONAL SHARES
 
                                   MANAGED BY
                                   ----------
 
                      GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
                                AN AFFILIATE OF
                              GOLDMAN, SACHS & CO.
 
                                  ------------
 
  GS Short-Term Government Agency Fund (the "Fund") is one fund in a family of
funds advised by Goldman Sachs Funds Management, L.P. (the "Investment
Adviser") or its affiliates, Goldman Sachs Asset Management and Goldman Sachs
Asset Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
  The Fund's objective is to achieve a high level of current income.
Secondarily, the Fund may, in seeking current income, also consider the
potential for capital gain. The Fund pursues its objectives through investment
in securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities and repurchase agreements pertaining thereto. These
securities may include mortgage pass-through securities and other securities
representing an interest in or collateralized by mortgages. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities.
 
  Goldman Sachs Funds Management, L.P., New York, New York, an affiliate of
Goldman, Sachs & Co., serves as the Fund's investment adviser. Goldman, Sachs &
Co. serves as the Fund's distributor and transfer agent. The Trust's custodian
is State Street Bank and Trust Company.
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Institutional Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from Goldman, Sachs & Co. by calling the telephone
number, or writing to one of the addresses, listed below.
 
INSTITUTIONAL SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR
GUARANTEED OR ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION,
AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
RESERVE BOARD OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN INSTITUTIONAL
SHARES OF THE FUND INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF
PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
GOLDMAN SACHS TRUST                   GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
4900 SEARS TOWER                      INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606               ONE NEW YORK PLAZA
                                      NEW YORK, NEW YORK 10004
 
 
GOLDMAN, SACHS & CO.                  GOLDMAN, SACHS & CO.   
DISTRIBUTOR                           TRANSFER AGENT          
85 BROAD STREET                       4900 SEARS TOWER        
NEW YORK, NEW YORK 10004              CHICAGO, ILLINOIS 60606 
                                                              
 
TOLL FREE (IN U.S.).................. 800-621-2550
 
                 The date of this Prospectus is March 1, 1995.
<PAGE>
 
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Short-Term Government Agency Fund (the "Fund") is one fund in a family of
funds advised by Goldman Sachs Funds Management, L.P. (the "Investment
Adviser") or its affiliates, Goldman Sachs Asset Management and Goldman Sachs
Asset Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's objective is to achieve a high level of current income.
Secondarily, the Fund may, in seeking current income, also consider the
potential for capital gain. The Fund invests exclusively in (a) securities
issued or guaranteed as to principal and interest by the U.S. Government, its
agencies or instrumentalities ("U.S. Government securities") deemed to have
remaining maturities or (in the case of mortgage-related securities) estimated
average lives of 6 years or less, and (b) repurchase agreements pertaining
thereto. The Fund will invest, under normal market conditions, at least 65% of
its total assets in securities issued by U.S. Government agencies or
instrumentalities and in repurchase agreements pertaining to U.S. Government
securities. The U.S. Government securities in which the Fund may invest include
mortgage-related securities. Under normal circumstances, substantially all of
the Fund's assets will be invested in securities issued or guaranteed by the
U.S. Government, its agencies or instrumentalities.
 
  The Fund may employ certain active management techniques to hedge the
interest rate risks associated with the Fund's portfolio securities, to enhance
its return and to seek to reduce fluctuation in its net asset value. These
include, but are not limited to, mortgage and interest rate swaps and interest
rate floors, caps and collars. The Fund may also utilize portfolio securities
lending, mortgage dollar rolls and repurchase agreements in an attempt to
enhance the return achieved by the Fund. See "Investment Objective and
Policies" and "Other Investments and Practices." There can be no assurance that
the Fund will achieve its investment objective.
 
  The Fund may, for temporary defensive purposes, hold or invest more than 35%
of its total assets in cash, U.S. Treasury securities or high quality money
market instruments, including commercial paper, bankers' acceptances,
repurchase agreements or other debt obligations with a remaining maturity of
one year or less. The Fund will maintain a dollar weighted average portfolio
maturity (as defined below) of 3 years or less.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Funds Management,
L.P., an affiliate of Goldman, Sachs & Co. ("Goldman Sachs"), serves as the
Fund's investment adviser. In this capacity, the Investment Adviser provides
investment advisory and administrative services and receives from the Fund a
monthly fee equal on an annual basis to 0.50% of the Fund's average daily net
assets. Goldman Sachs Funds Management, L.P. is registered with the Securities
and Exchange Commission (the "SEC") as an investment adviser. See "Investment
Adviser" and "Management--Investment Adviser."
 
                                       2
<PAGE>
 
 
                PURCHASE AND REDEMPTION OF INSTITUTIONAL SHARES
 
  The minimum initial investment is $50,000 in Institutional Shares of the Fund
alone or in combination with Institutional Shares of any other mutual fund
sponsored by Goldman Sachs and designated as an eligible fund for this purpose
and the relevant class of any portfolio of Goldman Sachs Money Market Trust.
Institutional Shares of the Fund may be purchased through Goldman Sachs at the
current net asset value per share without the imposition of a sales load. See
"Purchase of Institutional Shares." The Fund will redeem its Institutional
Shares upon request of a shareholder on any Business Day at the net asset value
next determined after receipt of such request in proper form. See "Redemption
of Institutional Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
shareholder inquiries. See "Management--Distributor and Transfer Agent."
 
                                  RISK FACTORS
 
  INVESTMENT IN MORTGAGE-BACKED SECURITIES GENERALLY. The Fund's investments in
mortgage pass-through securities and other securities representing an interest
in or collateralized by adjustable-rate and fixed-rate mortgage loans
("Mortgage-Backed Securities") entail certain risks. These risks include the
failure of an issuer or guarantor to meet its obligations, adverse interest
rate changes, adverse economic, real estate or unemployment trends, failures in
connection with processing of transactions and the effects of prepayments on
mortgage cash flows. The Fund's policy of investing in securities issued by
U.S. Government agencies or instrumentalities is designed, however, to minimize
credit and performance related risks otherwise associated with Mortgage-Backed
Securities.
 
  The securities in the Fund's portfolio will tend to decrease in value when
interest rates rise and increase in value when interest rates fall. Because the
Fund's investments are interest rate sensitive, the Fund's performance will
depend in large part upon the ability of the Fund to respond to fluctuations in
market interest rates and to utilize appropriate strategies to maximize returns
to the Fund, while attempting to minimize the associated risks to its invested
capital. Operating results will also depend upon the availability of
opportunities for the investment of the Fund's assets, including purchases and
sales of suitable securities.
 
  YIELD CHARACTERISTICS AND MARKET RISKS. The yield characteristics of the
Mortgage-Backed Securities in which the Fund may invest differ from those of
traditional fixed-income securities. The major differences typically include
more frequent interest and principal payments (usually monthly) on Mortgage-
Backed Securities, the adjustability of interest rates and the possibility that
prepayments of principal may be made at any time.
 
  Prepayment rates on Mortgage-Backed Securities are influenced by changes in
current interest rates and a variety of economic, geographic, social and other
factors and cannot be predicted with certainty. Both adjustable rate mortgage
loans and fixed rate mortgage loans may be subject to a greater rate of
 
                                       3
<PAGE>
 
principal prepayments in a declining interest rate environment and to a lesser
rate of principal prepayments in an increasing interest rate environment. Under
certain interest rate and prepayment scenarios, the Fund may fail to recoup
fully its investment in some of the Mortgage-Backed Securities it holds
notwithstanding a direct or indirect governmental or agency guarantee. The Fund
intends to use hedging techniques to control this risk. See "Investment
Objective and Policies" and "Other Investments and Practices." When the Fund
reinvests amounts representing scheduled payments and unscheduled prepayments
of principal, it may receive a rate of interest that is lower than the rate on
its existing portfolio of mortgage pass-through securities. Thus, Mortgage-
Backed Securities, and adjustable rate mortgage pass-through securities in
particular, may be less effective than other types of U.S. Government
securities as a means of "locking in" interest rates.
 
  OTHER INVESTMENTS AND PRACTICES. The Fund may invest in other instruments,
including direct obligations of the United States, and notes, bonds and
discount notes of U.S. Government agencies or instrumentalities. The Fund may
engage in certain other investment practices that also involve special risks.
These include, but are not limited to, the use of mortgage and interest rate
swaps and interest rate floors, caps and collars, making forward commitments,
lending portfolio securities, entering into mortgage dollar rolls and
repurchase agreements. See "Other Investments and Practices."
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, its divisions and
affiliates (including the Investment Adviser), partners and officers, in the
investment activities and business operations of the Fund may present certain
conflicts of interest, as described under "Management--Investment Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends that substantially all of its net investment income will be
declared as a dividend daily to shareholders of record as of 3:00 p.m. Chicago
time on that day and will be paid monthly. Over the course of the fiscal year,
dividends accrued and paid will constitute all or substantially all of the
Fund's net investment income. From time to time a portion of such dividends may
constitute a return of capital. The Fund also intends that any net realized
capital gains, if any, after offset by any available capital loss carryforwards
from prior taxable years, will be declared as a dividend at least annually.
Shareholders will receive dividends in additional Institutional Shares of the
Fund or may elect to receive cash as described under "Dividends."
 
                                       4
<PAGE>
 
 
                               FEES AND EXPENSES
                            (INSTITUTIONAL SHARES)*
 
<TABLE>
<CAPTION>
                                                             GS SHORT-TERM
                                                         GOVERNMENT AGENCY FUND
                                                         ----------------------
<S>                                                      <C>
SHAREHOLDER TRANSACTION EXPENSES:
    Maximum Sales Load Imposed on Purchases.............          None
    Maximum Sales Load Imposed on Reinvested Dividends..          None
    Redemption Fees.....................................          None
    Exchange Fees.......................................          None
ANNUAL FUND OPERATING EXPENSES:
(AS A PERCENTAGE OF AVERAGE NET ASSETS)
    Management Fees (after waiver)......................          0.40%**
    Distribution (Rule 12b-1) Fees......................          None
    Other Expenses (after expense limitation)...........          0.05%**
                                                                  ----
        TOTAL FUND OPERATING EXPENSES (AFTER EXPENSE
         LIMITATION)....................................          0.45%**
                                                                  ====
</TABLE>
 
EXAMPLE:
 
You would pay the following expenses on a hypothetical $1,000 investment,
assuming (1) a 5% annual return and (2) redemption at the end of each time
period:
 
<TABLE>
<CAPTION>

1 YEAR  3 YEARS  5 YEARS  10 YEARS
- ------  -------  -------  --------
<S>     <C>      <C>      <C>
$5      $14      $25      $57
</TABLE>

- --------
*   The information set forth in the foregoing table and hypothetical example
    relates only to Institutional Shares of the Fund. See "Shares of the Trust."
    Administration Shares and Service Shares of the Fund are subject to
    different fees and expenses. Administration Shares are subject to an
    administration fee of up to 0.25% of average daily net assets. Service
    Shares are subject to a service fee of up to 0.50% of average daily net
    assets. All other expenses related to Administration Shares and Service
    Shares are the same as for Institutional Shares.
 ** The Investment Adviser agreed that a portion of its advisory fee (0.10% on
    an annual basis) would not be imposed on the Fund and that it would reduce
    or limit certain "Other Expenses" of the Fund (excluding advisory fees,
    payments to Service Organizations (as defined below), taxes, interest and
    brokerage and litigation, indemnification and other extraordinary expenses)
    to the extent such expenses exceeded 0.05% per annum of the Fund's average
    net assets. Had the reduction of the advisory fee and the expense
    limitation not been reflected in the above table, the management fees,
    other expenses and total operating expenses attributable to Institutional
    Shares of the Fund would have been 0.50%, 0.09% and 0.59%, respectively.
    The foregoing table and example also reflect current operating expenses
    that will be applicable on an ongoing basis. See "Management--Investment
    Adviser."
 
  The purpose of the foregoing table is to assist investors in understanding
the various costs and expenses of the Fund that an investor in the Fund will
bear directly or indirectly. The costs and expenses
 
                                       5
<PAGE>
 
included in the table and hypothetical example above should not be considered
as representative of past or future expenses. Actual fees and expenses may be
greater or less than those indicated. Moreover, while the example assumes a 5%
annual return, the Fund's actual performance will vary and may result in an
actual return greater or less than 5%. See "Management--Investment Adviser."
 
                                       6
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
         SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  The following data with respect to Institutional Shares and Administration
Shares of the Fund outstanding during the periods indicated has been audited
by Arthur Andersen LLP, independent public accountants, as indicated in their
report incorporated by reference and attached to the Additional Statement from
the Fund's annual report to shareholders for the fiscal year ended October 31,
1994 (the "Annual Report"). This information should be read in conjunction
with the financial statements and related notes incorporated by reference and
attached to the Additional Statement. The Annual Report also contains
performance information and is available upon request and without charge by
writing to any of the addresses on the cover of this Prospectus.
 
<TABLE>
<CAPTION>
                                                                              DISTRIBUTIONS TO
                           INCOME FROM INVESTMENT OPERATIONS                    SHAREHOLDERS
                           -------------------------------------   ----------------------------------------
                                                                               IN
                                           NET          TOTAL                EXCESS       FROM                  NET
                 NET ASSET   NET       REALIZED AND     INCOME     FROM NET  OF NET   NET REALIZED             ASSET
                 VALUE AT  INVEST-      UNREALIZED       FROM      INVEST-   INVEST-    GAIN ON      FROM    VALUE AT
                 BEGINNING  MENT       GAIN (LOSS)    INVESTMENT     MENT     MENT     INVESTMENT  PAID-IN      END      TOTAL
                 OF PERIOD INCOME     ON INVESTMENTS  OPERATIONS    INCOME   INCOME   TRANSACTIONS CAPITAL   OF PERIOD RETURN(b)
                 --------- -------    --------------  ----------   --------  -------  ------------ --------  --------- ---------
<S>              <C>       <C>        <C>             <C>          <C>       <C>      <C>          <C>       <C>       <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
shares..........  $10.14   $0.5628(f)    $(0.4592)(f)  $0.1036(f)  $(0.5598)     --     $(0.0438)       --     $9.64      0.99%
1994-
Administration
shares..........   10.14    0.5329(f)     (0.4539)(f)   0.0790(f)   (0.5352)     --      (0.0438)       --      9.64      0.73
1993-Institu-
tional shares...   10.16    0.5627        (0.0135)(a)   0.5492      (0.5627) (0.0065)        --         --     10.14      5.55
1993-
Administration
shares(d).......   10.23    0.2725        (0.0900)(a)   0.1825      (0.2725)     --          --         --     10.14      1.74
1992-Institu-
tional shares...   10.22    0.6703        (0.0600)(a)   0.6103      (0.6703)     --          --         --     10.16      6.24
1991-Institu-
tional shares...   10.00    0.8020         0.2200 (a)   1.0220      (0.8020)     --          --         --     10.22     10.93
1990-Institu-
tional shares...   10.07    0.8300        (0.0700)(a)   0.7600      (0.8300)     --          --         --     10.00      8.23
1989-Institu-
tional shares...   10.10    0.8800            --        0.8800      (0.8800)     --          --     (0.0300)   10.07      9.08
FOR THE PERIOD AUGUST 15, 1988 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1988-Institu-
tional Shares...   10.00    0.1800         0.1000       0.2800      (0.1800)     --          --         --     10.10      3.30
<CAPTION>
                                                                  RATIOS ASSUMING NO
                                                                  WAIVER OF FEES OR
                                                                  EXPENSE LIMITATION
                                                               ------------------------
                               RATIO OF                 NET
                                 NET                 ASSETS AT  RATIO OF   RATIO OF NET
                 RATIO OF NET INVESTMENT                END    EXPENSES TO  INVESTMENT
                 EXPENSES TO  INCOME TO  PORTFOLIO   OF PERIOD   AVERAGE    INCOME TO
                 AVERAGE NET   AVERAGE   TURNOVER       (IN        NET     AVERAGE NET
                    ASSETS    NET ASSETS  RATE(c)     000'S)     ASSETS       ASSETS
                 ------------ ---------- ----------- --------- ----------- ------------
<S>              <C>          <C>        <C>         <C>       <C>         <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
shares..........     0.45%       5.69%    289.79%    $193,095     0.59%        5.55%
1994-
Administration
shares..........     0.70        5.38     289.79          730     0.84         5.24
1993-Institu-
tional shares...     0.45        5.46     411.66      359,708     0.64         5.31
1993-
Administration
shares(d).......     0.70(e)     4.84(e)  411.66       16,490     0.80(e)      4.74(e)
1992-Institu-
tional shares...     0.45        6.60     216.07      277,927     0.69         6.36
1991-Institu-
tional shares...     0.45        8.25     155.44      158,848     0.79         7.91
1990-Institu-
tional shares...     0.45        8.62     173.21       68,995     0.95         8.12
1989-Institu-
tional shares...     0.46        8.71     137.37       31,015     1.39         7.78
FOR THE PERIOD AUGUST 15, 1988 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1988-Institu-
tional Shares...     0.55(e)     8.55(e)  167.00(e)    39,052     1.42(e)      7.68(e)
</TABLE>
- ----
(a) Includes balancing effect of calculating per share amounts.
(b) Assumes investment at the net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(c) Includes effect of mortgage dollar roll transactions.
(d) Administration share activity commenced on April 15, 1993.
(e) Annualized.
(f) Calculated based on the average shares outstanding methodology.
 
                                       7
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund seeks to achieve a high level of current income. Secondarily, the
Fund may, in seeking current income, also consider the potential for capital
gain. There can be no assurance that the objective of the Fund will be
realized.
 
  SELECTION OF PORTFOLIO INVESTMENTS. The Fund invests exclusively in (a)
securities issued or guaranteed as to principal and interest by the U.S.
Government, its agencies or instrumentalities ("U.S. Government securities")
deemed to have remaining maturities or (in the case of mortgage-related
securities) estimated average lives of six years or less and (b) repurchase
agreements collateralized by U.S. Government Securities. Under normal market
conditions, the Fund will invest at least 65% of its total assets in securities
issued by U.S. Government agencies or instrumentalities and in repurchase
agreements pertaining to U.S. Government securities. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities. The Fund may, for temporary defensive purposes, hold or
invest more than 35% of its total assets in cash, U.S. Treasury securities or
high quality money market instruments, including commercial paper, bankers'
acceptances, repurchase agreements or other debt obligations with a remaining
maturity of one year or less.
 
  PORTFOLIO DURATION. The Fund will maintain an option-adjusted duration of not
more than 3 years, however, its actual option-adjusted duration is expected to
be approximately 2 years under normal interest rate conditions. The Fund's
duration is a measure of the price sensitivity of the portfolio, including
expected cash flow and mortgage prepayments under a wide range of interest rate
scenarios. Maturity measures only the time until final payment is due on a bond
or other debt security; it takes no account of the pattern of a security's cash
flows over time, including how cash flow is affected by prepayments and by
changes in interest rates. In computing the duration of its portfolio, the Fund
will have to estimate the duration of obligations that are subject to
prepayment or redemption by the issuer taking into account the influence of
interest rates on prepayments and coupon flows. This method of computing
duration is known as option-adjusted duration. The Fund may use various
techniques to shorten or lengthen the option-adjusted duration of its
portfolio, including the acquisition of debt obligations at a premium or
discount, mortgage and interest rate swaps and interest rate floors, caps and
collars.
 
  OTHER INVESTMENT POLICIES. The Fund may also employ certain active management
techniques to hedge the interest rate risks associated with the Fund's
portfolio securities, to enhance its return and to seek to reduce fluctuation
in its net asset value. These techniques include, but are not limited to,
mortgage and interest rate swaps and interest rate floors, caps and collars.
The Fund may also employ other investment techniques to enhance returns, such
as loans of portfolio securities, mortgage dollar rolls, forward commitments
and repurchase agreements.
 
  When interest rates decline, the value of a portfolio invested in fixed-rate
debt securities can be expected to rise. Conversely, when interest rates rise,
the value of a portfolio invested in fixed-rate debt securities can be expected
to decline. In contrast, since interest rates on adjustable-rate mortgage loans
are reset periodically, yields of portfolio securities representing interests
in such loans will gradually align themselves to reflect changes in market
interest rates, causing the value of such adjustable-rate securities to
fluctuate less dramatically in response to interest rate fluctuations than
would fixed-rate debt securities. The Investment Adviser expects the Fund's net
asset value to be relatively stable during normal market conditions. This is
because the Fund will maintain a maximum option-adjusted duration of not more
than 3 years and will utilize certain interest rate hedging techniques.
However, a sudden and extreme increase
 
                                       8
<PAGE>
 
in prevailing interest rates may cause a decline in the Fund's net asset value.
Conversely, a sudden and extreme decline in interest rates could result in an
increase in the Fund's net asset value.
 
  The Fund's investment objective of seeking to achieve a high level of current
income and the policies specified under "Investment Restrictions" may only be
changed with the approval of the holders of a majority of the outstanding
shares of the Fund. All other policies described herein may be changed by a
vote of the Trustees. There can be no assurance that the Fund will be
successful in achieving its investment objective. An investment in shares of
the Fund does not constitute a complete investment program. Investors may wish
to complement an investment in the Fund with other types of investments.
 
                               INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Funds Management, L.P., an
affiliate of Goldman Sachs. The management services provided by the Investment
Adviser are subject to the general supervision of the Trust's Board of
Trustees. The Investment Adviser and its affiliates serve a wide range of
clients including private and public pension funds, endowments, foundations,
banks, thrifts, insurance companies, corporations, and private investors and
family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and market expertise
of Goldman Sachs, whose investment research effort is one of the largest in the
industry. The in-depth information and analyses generated by Goldman Sachs's
research analysts, economists and portfolio strategists are available to the
Investment Adviser.
 
                           SPECIAL INVESTMENT METHODS
 
U.S. GOVERNMENT SECURITIES
 
  U.S. Government securities include several different kinds of obligations.
Such securities include a variety of United States Treasury obligations,
including bills and notes, which principally differ only in their interest
rates, maturities and times of issuance, and obligations issued or guaranteed
by United States Government agencies or instrumentalities which are supported
by (a) the full faith and credit of the United States Treasury (such as
securities of the Government National Mortgage Association ("Ginnie Mae")), (b)
the authority of the United States Government to purchase certain obligations
of the issuer (such as securities of the Federal National Mortgage Association
("Fannie Mae") and the Federal Home Loan Mortgage Corporation ("Freddie Mac")),
(c) the limited authority of the issuer to borrow from the United States
Treasury (such as securities of the Student Loan Marketing Association) or (d)
only the credit of the issuer. No assurance can be given that the United States
Government will provide financial support to United States Government agencies
or instrumentalities described in clauses (b), (c) or (d) above in the future,
other than as set forth above, since it is not obligated to do so by law. U.S.
Government securities also include securities related to pools of mortgages as
discussed below.
 
                                       9
<PAGE>
 
CHARACTERISTICS OF MORTGAGE-BACKED SECURITIES
 
  Mortgage-Backed Securities are securities that directly or indirectly
represent participations in, or are collateralized by and payable from,
mortgage loans secured by real property. The investment characteristics of
adjustable and fixed rate Mortgage-Backed Securities differ from those of
traditional fixed income securities. The major differences include the payment
of interest and principal on Mortgage-Backed Securities on a more frequent
(usually monthly) schedule, and the possibility that principal may be prepaid
at any time due to prepayments on the underlying mortgage loans or other
assets. These differences can result in significantly greater price and yield
volatility than is the case with traditional fixed income securities. As a
result, if the Fund purchases Mortgage-Backed Securities at a premium, a faster
than expected prepayment rate will reduce both the market value and the yield
to maturity from those which were anticipated. A prepayment rate that is slower
than expected will have the opposite effect of increasing yield to maturity and
market value. Conversely, if the Fund purchases Mortgage-Backed Securities at a
discount, faster than expected prepayments will increase, while slower than
expected prepayments will reduce, yield to maturity and market value. The
Investment Adviser will seek to manage these potential risks and benefits by
investing in a variety of Mortgage-Backed Securities and by using certain
hedging techniques. See "Other Investments and Practices."
 
  Prepayments on a pool of mortgage loans are influenced by a variety of
factors, including economic conditions, changes in mortgagors' housing needs,
job transfers, unemployment, mortgagors' net equity in the mortgaged properties
and servicing decisions. The timing and level of prepayments cannot be
predicted. Generally, however, prepayments on adjustable rate mortgage loans
and fixed rate mortgage loans will increase during a period of falling mortgage
interest rates and decrease during a period of rising mortgage interest rates.
Accordingly, the amounts of prepayments available for reinvestment by the Fund
are likely to be greater during a period of declining mortgage interest rates.
If general interest rates also decline, such prepayments are likely to be
reinvested at lower interest rates than the Fund was earning on the Mortgage-
Backed Securities that were prepaid.
 
  GUARANTEED MORTGAGE-BACKED SECURITIES IN WHICH THE FUND INVESTS. All of the
Fund's investments in Mortgage-Backed Securities will be issued or guaranteed
by the U.S. Government or one of its agencies or instrumentalities, including
but not limited to, Ginnie Mae, Fannie Mae and Freddie Mac. Ginnie Mae
securities are backed by the full faith and credit of the U.S. Government,
which means that the U.S. Government guarantees that the interest and principal
will be paid when due. Fannie Mae securities and Freddie Mac securities are not
backed by the full faith and credit of the U.S. Government; however, the
ability of these agencies to borrow from the U.S. Treasury makes their
securities high quality securities with minimal credit risks. There are several
types of guaranteed Mortgage-Backed Securities currently available, including
guaranteed mortgage pass-through certificates and multiple-class securities,
which include guaranteed Real Estate Mortgage Investment Conduit ("REMIC")
pass-through certificates and stripped Mortgage Backed-Securities. The Fund
will be permitted to invest in other types of Mortgage-Backed Securities that
may be available in the future to the extent investment in such securities is
consistent with its investment objective and policies.
 
  MULTIPLE CLASS PASS-THROUGH SECURITIES AND COLLATERALIZED MORTGAGE
OBLIGATIONS. The Fund may invest in multiple class securities issued by U.S.
Government agencies and instrumentalities such as Fannie Mae or Freddie Mac,
including guaranteed collateralized mortgage obligations ("CMOs") and REMIC
pass-through or participation certificates. A REMIC is a CMO that qualifies for
special tax treatment under the Internal Revenue Code of 1986, as amended (the
"Code"), and invests in certain mortgages principally secured by interests in
real property and other permitted investments.
 
                                       10
<PAGE>
 
  CMOs and guaranteed REMIC pass-through certificates ("REMIC Certificates")
issued by Fannie Mae and Freddie Mac are types of multiple class pass-through
securities. Investors may purchase beneficial interests in REMICs, which are
known as "regular" interests or "residual" interests. The Fund does not intend
to purchase residual interests in CMOs or REMICs. The REMIC Certificates
represent beneficial ownership interests in a REMIC trust, generally consisting
of mortgage loans or Fannie Mae, Freddie Mac or Ginnie Mae guaranteed mortgage
pass-through certificates (the "Mortgage Assets"). The obligations of Fannie
Mae or Freddie Mac under their respective guaranty of the REMIC Certificates
are obligations solely of Fannie Mae or Freddie Mac, respectively.
 
  Fannie Mae REMIC Certificates are issued and guaranteed as to timely
distribution of principal and interest by Fannie Mae. In addition, Fannie Mae
will be obligated to distribute the principal balance of each class of REMIC
Certificates in full, whether or not sufficient funds are otherwise available.
 
  For Freddie Mac REMIC Certificates, Freddie Mac guarantees the timely payment
of interest, and also guarantees the payment of principal as payments are
required to be made on the underlying mortgage participation certificates
("PCs"). PCs represent undivided interests in specified level payment,
residential mortgages or participations therein purchased by Freddie Mac and
placed in a PC pool. With respect to principal payments on PCs, Freddie Mac
generally guarantees ultimate collection of all principal of the related
mortgage loans without offset or deduction. Freddie Mac also guarantees timely
payment of principal on certain PCs.
 
  CMOs and REMIC Certificates are issued in multiple classes. Each class of
CMOs and REMIC Certificates, often referred to as a "tranche," is issued at a
specific adjustable or fixed interest rate and must be fully retired no later
than its final scheduled distribution date. Principal prepayments on the
underlying mortgage loans or the Mortgage Assets underlying the CMOs or REMIC
Certificates may cause some or all of the classes of CMOs or REMIC Certificates
to be retired substantially earlier than their final distribution dates.
Generally, interest is paid or accrues on all classes of CMOs or REMIC
Certificates on a monthly basis.
 
  The principal of and interest on the Mortgage Assets may be allocated among
the several classes of CMOs or REMIC Certificates in various ways. In certain
structures (known as "sequential pay" CMOs or REMIC Certificates), payments of
principal, including any principal prepayments, on the Mortgage Assets
generally are applied to the classes of CMOs or REMIC Certificates in the order
of their respective final distribution dates. Thus, no payment of principal
will be made on any class of sequential pay CMOs or REMIC Certificates until
all other classes having an earlier final distribution date have been paid in
full.
 
  Additional structures of CMOs and REMIC Certificates include, among others,
"parallel pay" CMOs and REMIC Certificates. Parallel pay CMOs or REMIC
Certificates are those which are structured to apply principal payments and
prepayments of the Mortgage Assets to two or more classes concurrently on a
proportionate or disproportionate basis. These simultaneous payments are taken
into account in calculating the final distribution date of each class.
 
  A wide variety of REMIC Certificates may be issued in the parallel pay or
sequential pay structures. These securities include accrual certificates (also
known as "Z-Bonds"), which only accrue interest at a specified rate until all
other certificates having an earlier final distribution date have been retired
and are converted thereafter to an interest-paying security, and planned
amortization class ("PAC") certificates, which are parallel pay REMIC
Certificates which generally require that specified amounts of principal be
 
                                       11
<PAGE>
 
applied on each payment date to one or more classes of REMIC Certificates (the
"PAC Certificates"), even though all other principal payments and prepayments
of the Mortgage Assets are then required to be applied to one or more other
classes of the Certificates. The scheduled principal payments for the PAC
Certificates generally have the highest priority on each payment date after
interest due has been paid to all classes entitled to receive interest
currently. Shortfalls, if any, are added to the amount payable on the next
payment date. The PAC Certificate payment schedule is taken into account in
calculating the final distribution date of each class of PAC. In order to
create PAC tranches, one or more tranches generally must be created that absorb
most of the volatility in the underlying mortgage assets. These tranches tend
to have market prices and yields that are much more volatile than the PAC
classes.
 
  STRIPPED MORTGAGE-BACKED SECURITIES. The Fund may invest in stripped
mortgage-backed securities ("SMBS"), which are derivative multiple class
mortgage-backed securities. The Fund may only invest in SMBS issued or
guaranteed by the U.S. Government, its agencies or instrumentalities.
 
  SMBS are usually structured with two classes that receive different
proportions of the interest and principal distributions from a pool of Mortgage
Assets. A common type of SMBS will have one class receiving all of the interest
from the Mortgage Assets, while the other class will receive all of the
principal. However, in some instances, one class will receive some of the
interest and most of the principal while the other class will receive most of
the interest and the remainder of the principal. If the underlying Mortgage
Assets experience greater than anticipated prepayments of principal, the Fund
may fail to fully recoup its initial investment in these securities. Although
the market for such securities is increasingly liquid, certain SMBS may not be
readily marketable and will be considered illiquid for purposes of the Fund's
limitation on investments in illiquid securities. The market value of the class
consisting entirely of principal payments generally is unusually volatile in
response to changes in interest rates. The yields on a class of SMBS that
receives all or most of the interest from Mortgage Assets are generally higher
than prevailing market yields on other Mortgage-Backed Securities because their
cash flow patterns are more volatile and there is a greater risk that the
initial investment will not be fully recouped. The Investment Adviser will seek
to manage these risks (and potential benefits) by investing in a variety of
such securities and by using certain hedging techniques. See "Other Investments
and Practices."
 
ZERO COUPON BONDS
 
  The Fund may invest in zero coupon securities, zero coupon U.S. Treasury
securities (which are Treasury notes and bonds that have been stripped of their
unmatured interest coupons), the coupons themselves and receipts or
certificates representing interests in such stripped debt obligations. A zero
coupon security pays no interest to its holder during its life and its value
consists of the difference between its face value at maturity and its cost. The
market prices of zero coupon securities generally are more volatile than market
prices of securities that pay interest periodically and are likely to respond
to a greater degree to changes in interest rates than interest bearing
securities having similar maturities and credit qualities. The Fund's
investments in zero coupon securities or other stripped securities may require
the Fund to sell certain of its portfolio securities to generate sufficient
cash to satisfy certain income distribution requirements. See "Taxation" in the
Additional Statement.
 
                                       12
<PAGE>
 
                YIELD, MARKET VALUE AND RISK CONSIDERATIONS OF 
                          MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in certain Mortgage-Backed Securities, such as interest-
only and principal-only SMBS, that are extremely sensitive to changes in
prepayments and interest rates. Even though such securities have been issued or
guaranteed by an agency or instrumentality of the U.S. Government, under
certain interest rate or prepayment rate scenarios, the Fund may fail to fully
recover its investment in such securities.
 
  The investment characteristics of Mortgage-Backed Securities differ from
those of traditional fixed income securities. The major differences typically
include more frequent interest and principal payments, usually monthly, and the
possibility that unscheduled prepayments of principal may be made at any time.
Prepayment rates are influenced by changes in current interest rates and a
variety of economic, geographic, social and other factors and cannot be
predicted with certainty. Adjustable rate mortgage loans may be subject to a
greater prepayment rate in a declining interest rate environment. The yields to
maturity of the Mortgage-Backed Securities in which the Fund may invest will be
affected by the actual rate of payment (including prepayments) of principal of
the underlying mortgage loans. The mortgage loans underlying such securities
generally may be prepaid at any time without penalty. In a fluctuating interest
rate environment, a predominant factor affecting the prepayment rate on a pool
of mortgage loans is the difference between the interest rates on the mortgage
loans and prevailing mortgage loan interest rates (giving consideration to the
cost of any refinancing). In general, if interest rates on new mortgage loans
fall sufficiently below the interest rates on existing fixed rate mortgage
loans underlying mortgage pass-through securities, the rate of prepayment would
be expected to increase. Conversely, if mortgage loan interest rates rise above
the interest rates on the fixed rate mortgage loans underlying the mortgage
pass-through securities, the rate of prepayment may be expected to decrease.
 
  The rate of principal prepayments with respect to adjustable rate mortgages
has fluctuated in recent years. As is the case with fixed rate mortgage loans,
adjustable rate mortgages may be subject to a greater rate of principal
prepayments in a declining interest rate environment. For example, if
prevailing interest rates fall significantly, mortgages could be subject to
higher prepayment rates than if prevailing interest rates remain constant
because the availability of fixed rate mortgage loans at competitive interest
rates may encourage mortgagors to refinance their mortgages to "lock-in" a
lower fixed interest rate. Conversely, if prevailing interest rates rise
significantly, adjustable rate mortgages may prepay at lower rates than if
prevailing rates remain at or below those in effect at the time such mortgages
were originated due, for example, to the unavailability of lower rate
alternatives. There can be no certainty as to the rate of prepayments on the
mortgages in either stable or changing interest rate environments. In addition,
there can be no certainty as to whether increases in the principal balances of
adjustable rate mortgages due to the addition of deferred interest may result
in a default rate higher than that on mortgages that do not provide for
negative amortization. Other factors affecting prepayment of mortgages include
changes in mortgagors' housing needs, job transfers, unemployment, mortgagors'
net equity in the mortgage properties and servicing decisions.
 
  The Fund's reinvestment of principal payments and prepayments received on a
mortgage pass-through security may be made at rates higher or lower than the
rate payable on such security, thus affecting the return realized by the Fund.
In addition, the receipt of interest payments monthly rather than semi-annually
by the Fund has a compounding effect that may increase the yield to the Fund
relative to debt obligations that pay interest semi-annually. Due to these
factors, Mortgage-Backed Securities may also be less effective than U.S.
Treasury securities of similar maturity at maintaining yields during periods
 
                                       13
<PAGE>
 
of changing interest rates. Prepayments may have a disproportionate effect on
certain Mortgage-Backed Securities such as SMBS and certain other multiple
class pass-through securities. The Fund may purchase Mortgage-Backed Securities
at a premium or at a discount.
 
  RISKS ASSOCIATED WITH DERIVATIVE MORTGAGE-BACKED SECURITIES. Derivative
Mortgage-Backed Securities are subject to different combinations of interest
rate and/or prepayment risks. In addition, particular derivative securities may
be leveraged such that their exposure (i.e., price sensitivity) to interest
rate and/or prepayment risk is magnified. The Investment Adviser may use
derivative Mortgage-Backed Securities and other derivative securities
consistent with the Fund's investment objective for a variety of purposes
including adjusting the average duration or interest rate sensitivity of the
Fund's portfolio or attempting to enhance the Fund's total return. The
Investment Adviser manages the risks and benefits of derivative Mortgage-Backed
Securities and other derivative securities by prudent analysis, selection and
monitoring of such securities included in the Fund's portfolio.
 
  The risk of faster than anticipated prepayments generally adversely affects
interest-only securities (IOs), super floaters and premium priced Mortgage-
Backed Securities. The risk of slower than anticipated prepayments generally
adversely affects principal-only securities (POs), floating rate securities
subject to interest rate caps, support tranches and discount priced Mortgage-
Backed Securities.
 
  RISKS ASSOCIATED WITH OTHER DERIVATIVE FLOATING RATE SECURITIES. Other types
of floating rate derivative securities present more complex types of interest
rate risks. For example, range floaters are subject to the risk that the coupon
will be reduced to below market rates if a designated interest rate floats
outside of a specified interest rate band or collar. Dual index or yield curve
floaters are subject to lower prices in the event of an unfavorable change in
the spread between two designated interest rates.
 
                        OTHER INVESTMENTS AND PRACTICES
 
  INVERSE FLOATING RATE SECURITIES. The Fund may invest in leveraged inverse
floating rate debt instruments ("inverse floaters"). The interest rate on an
inverse floater resets in the opposite direction from the market rate of
interest to which the inverse floater is indexed. An inverse floater may be
considered to be leveraged to the extent that its interest rate varies by a
magnitude that exceeds the magnitude of the change in the index rate of
interest. The higher degree of leverage inherent in inverse floaters is
associated with the greater volatility in their market values. Accordingly, the
duration of an inverse floater may exceed its stated final maturity. Certain
inverse floaters may be deemed to be illiquid securities for purposes of the
Fund's 15% limitation on investments in such securities.
 
  INTEREST RATE SWAPS, MORTGAGE SWAPS, CAPS, FLOORS AND COLLARS. The Fund may
enter into interest rate swaps and mortgage swaps for hedging purposes and to
increase total return. The Fund may also enter into other types of interest
rate swap arrangements such as caps, floors and collars. Interest rate swaps
involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, e.g., an exchange of floating rate
payments for fixed rate payments. Mortgage swaps are similar to interest rate
swaps in that they represent commitments to pay and receive interest. The
notional principal amount, however, is tied to a reference pool or pools of
mortgages. The purchase of an interest rate cap entitles the purchaser, to the
extent that a specified index exceeds a predetermined interest rate, to receive
payment of interest on a notional principal amount from the party selling such
interest rate cap. The purchase of an interest rate floor entitles the
purchaser, to the extent that a specified index falls below a predetermined
interest rate, to receive payment of interest on a notional principal
 
                                       14
<PAGE>
 
amount from the party selling such interest rate floor. An interest rate collar
is the combination of a cap and a floor that preserves a certain return within
a predetermined range of interest rates. Since interest rate swaps, mortgage
swaps, caps, floors and collars are individually negotiated, the Fund expects
to achieve an acceptable degree of correlation between its portfolio
investments and its swap, cap, floor and collar positions entered into for
hedging purposes.
 
  The Fund will enter into interest rate swaps and mortgage swaps only on a net
basis, which means that the two payment streams are netted out, with the Fund
receiving or paying, as the case may be, only the net amount of the two
payments. Interest rate swaps and mortgage swaps do not involve the delivery of
securities, other underlying assets or principal. Accordingly, the risk of loss
with respect to interest rate swaps and mortgage swaps is limited to the net
amount of payments that the Fund is contractually obligated to make. If the
other party to an interest rate swap or mortgage swap defaults, the Fund's risk
of loss consists of the net amount of payments that the Fund is contractually
entitled to receive, if any. To the extent the net amount of an interest rate
swap or mortgage swap is held in a segregated account, consisting of cash and
liquid, high grade debt securities, the Fund and the Investment Adviser believe
that swaps do not constitute senior securities under the Investment Company Act
of 1940, as amended (the "Act") and, accordingly, will not treat them as being
subject to the Fund's borrowing restriction.
 
  The Fund will not enter into any interest rate swap, mortgage swap, or
interest rate cap, floor or collar transactions unless the unsecured commercial
paper, senior debt or claims paying ability of the other party is rated either
AA or A-1 or better by Standard & Poor's Ratings Group ("S&P") or Aa or P-1 or
better by Moody's Investors Service, Inc. ("Moody's"), or, if unrated by such
rating organizations, determined to be of comparable quality by the Investment
Adviser.
 
  The use of interest rate and mortgage swaps as well as interest rate caps,
floors and collars, is a highly specialized activity which involves investment
techniques and risks different from those associated with ordinary portfolio
securities transactions. If the Investment Adviser is incorrect in its
forecasts of market values and interest rates, the investment performance of
the Fund would be less favorable than it would have been if these investment
techniques were not used. The staff of the SEC considers interest rate swaps
and mortgage swaps, as well as interest rate floors and collars, to be illiquid
securities for purposes of the Fund's 15% limitation on illiquid investments.
 
  LENDING OF PORTFOLIO SECURITIES. The Fund may also seek to increase its
income by lending portfolio securities. Under present regulatory policies, such
loans may be made to institutions, such as broker-dealers, and are required to
be secured continuously by collateral in cash, cash equivalents or U.S.
Government securities maintained on a current basis in an amount at least equal
to the market value of the securities loaned. Cash collateral may be invested
in cash equivalents. If the Investment Adviser determines to make securities
loans, the value of the securities loaned may not exceed 33 1/3% of the value
of the total assets of the Fund. See "Investment Restrictions" in the
Additional Statement. The Fund may experience a loss or delay in the recovery
of its securities if the institution with which it has engaged in a portfolio
loan transaction breaches its agreement with the Fund.
 
  WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase
securities on a when-issued basis. When-issued transactions arise when
securities are purchased by the Fund with payment and delivery taking place in
the future in order to secure what is considered to be an advantageous price
and yield to the Fund at the time of entering into the transaction. The Fund
may also purchase securities on a forward commitment basis. In a forward
commitment transaction, the Fund
 
                                       15
<PAGE>
 
contracts to purchase securities for a fixed price at a future date beyond
customary settlement time. The Fund is required to hold and maintain in a
segregated account until the settlement date cash or liquid, high grade debt
obligations in an amount sufficient to meet the purchase price. Alternatively,
the Fund may enter into offsetting contracts for the forward sale of other
securities that it owns. The purchase of securities on a when-issued or forward
commitment basis involves a risk of loss if the value of the security to be
purchased declines prior to the settlement date. Although the Fund would
generally purchase securities on a when-issued or forward commitment basis with
the intention of actually acquiring securities for its portfolio, the Fund may
dispose of a when-issued security or forward commitment prior to settlement if
the Investment Adviser deems it appropriate to do so.
 
  MORTGAGE DOLLAR ROLLS. The Fund may enter into mortgage "dollar rolls" in
which the Fund sells securities for delivery in the current month and
simultaneously contracts with the same counterparty to repurchase similar (same
type, coupon and maturity), but not identical securities on a specified future
date. During the roll period, the Fund loses the right to receive principal and
interest paid on the securities sold. However, the Fund would benefit to the
extent of any difference between the price received for the securities sold and
the lower forward price for the future purchase (often referred to as the
"drop") or fee income plus the interest earned on the cash proceeds of the
securities sold until the settlement date of the forward purchase. Unless such
benefits exceed the income, capital appreciation and gain or loss due to
mortgage prepayments that would have been realized on the securities sold as
part of the mortgage dollar roll, the use of this technique will diminish the
investment performance of the Fund compared with what such performance would
have been without the use of mortgage dollar rolls. All cash proceeds will be
invested in instruments that are permissible investments for the Fund. The Fund
will hold and maintain in a segregated account until the settlement date cash
or liquid, high grade debt securities in an amount equal to the forward
purchase price.
 
  For financial reporting and tax purposes, the Fund treats mortgage dollar
rolls as two separate transactions; one involving the purchase of a security
and a separate transaction involving a sale. The Fund does not currently intend
to enter into mortgage dollar rolls that are accounted for as a financing.
 
  Mortgage dollar rolls involve certain risks including the following: if the
broker-dealer to whom the Fund sells the security becomes insolvent, the Fund's
right to purchase or repurchase the mortgage-related securities subject to the
mortgage dollar roll may be restricted and the instrument which the Fund is
required to repurchase may be worth less than an instrument which the Fund
originally held. Successful use of mortgage dollar rolls will depend upon the
Investment Adviser's ability to manage its interest rate and mortgage
prepayments exposure. For these reasons, there is no assurance that mortgage
dollar rolls can be successfully employed.
 
  REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with
dealers in U.S. Government securities and member banks of the Federal Reserve
System which furnish collateral at least equal in value or market price to the
amount of their repurchase obligation. In a repurchase agreement, the Fund
purchases a debt security from a seller which undertakes to repurchase the
security at a specified resale price on an agreed future date (ordinarily a
week or less). The resale price generally exceeds the purchase price by an
amount which reflects an agreed-upon market interest rate for the term of the
repurchase agreement. The primary risk is that, if the seller defaults, the
Fund might suffer a loss to the extent that the proceeds from the sale of the
underlying securities and other collateral held by the Fund in connection with
the related repurchase agreement are less than the repurchase price. Repurchase
agreements maturing in more than seven days are considered by the Fund to be
illiquid. In
 
                                       16
<PAGE>
 
addition, the Fund, together with other registered investment companies having
advisory agreements with the Investment Adviser or any of its affiliates, may
transfer uninvested cash balances into a single joint account, the daily
aggregate balance of which will be invested in one or more repurchase
agreements.
 
  ILLIQUID SECURITIES. The Fund will not invest more than 15% of its net assets
in securities which are illiquid, including securities that are not readily
marketable, repurchase agreements maturing in more than seven days, interest
rate and mortgage swaps, interest rate caps, floors and collars, certain SMBS
and securities that are restricted as to resale. However, a restricted security
is not considered to be illiquid if the Trustees of the Trust determine, based
upon the Investment Adviser's continuing review of the trading markets for the
specific restricted security, under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale under Rule 144A under the
Securities Act of 1933 is liquid. In addition, a repurchase agreement which by
its terms can be liquidated before its nominal fixed term on seven days or less
notice is regarded as a liquid instrument. Subject to the 15% limitation on
illiquid securities investments, the Fund may acquire U.S. Government
securities in a private placement.
 
  Since it is not possible to predict with assurance exactly how this market
for restricted securities sold and offered under Rule 144A will develop, the
Board of Trustees will carefully monitor the Fund's investments in these
securities, focusing on such important factors, among others, as valuation,
credit quality, liquidity and availability of information. This investment
practice could have the effect of increasing the level of illiquidity in the
Fund to the extent that qualified institutional buyers become for a time
uninterested in purchasing these restricted securities.
 
  OTHER INVESTMENT COMPANIES. The Fund reserves the right to invest up to 10%
of its total assets, calculated at the time of purchase, in the securities of
other investment companies, including business development companies and small
business investment companies. The Fund may not invest more than 5% of its
total assets in the securities of any one investment company or acquire more
than 3% of the voting securities of any other investment company. Pursuant to
an exemptive order obtained from the SEC, other investment companies in which
the Fund may invest include money market funds for which the Investment Adviser
or any of its affiliates serves as investment adviser. The Fund will indirectly
bear its proportionate share of any management fees and other expenses paid by
investment companies in which it invests in addition to the advisory fees paid
by the Fund. However, to the extent that the Fund invests in a money market
fund for which the Investment Adviser or any of its affiliates acts as adviser,
the advisory fees payable by the Fund to the Investment Adviser will be reduced
by an amount equal to the Fund's proportionate share of the advisory fees paid
by such money market fund to the Investment Adviser or any of its affiliates.
 
  INSTRUMENT MATURITY. The Mortgage-Backed Securities in which the Fund invests
will have an estimated average life, as determined by the Investment Adviser,
of six years or less. Average life estimates are based upon anticipated
prepayment patterns which, in turn, are based upon past prepayment patterns,
prevailing interest rates and other factors. Due to actual prepayment
experience, however, the remaining estimated average life of an investment
after purchase by the Fund may increase to more than six years or may decrease
at a rate faster than anticipated. The Fund's other securities generally will
have remaining maturities of 6 years or less and repurchase agreements will
have remaining maturities of less than one year.
 
                                       17
<PAGE>
 
  The Fund may purchase securities with variable or floating interest rates. In
calculating average portfolio duration or maturity, such securities will
generally be treated as having a maturity equal to the time remaining until
their interest rate is next reset, unless the Investment Adviser believes some
other treatment to be more appropriate, for example, because of the market
price impact of interest rate caps, floors and collars. In addition, the Fund
also may purchase securities that have demand or put features. In calculating
average portfolio duration or maturity, these securities generally will be
treated as having a maturity equal to the period remaining until the Fund can
obtain the principal amount through exercise of such feature.
 
  OTHER INFORMATION. The Investment Adviser seeks to enhance the Fund's income
by taking advantage of yield disparities or other factors (such as anticipated
changes in relative value which have not yet occurred) that occur or are
expected to occur in the securities markets. The Fund may dispose of any
security prior to its maturity if such disposition and reinvestment of the
proceeds are expected to enhance income consistent with the Investment
Adviser's judgment as to a desirable maturity structure or if such disposition
is believed to be advisable due to other circumstances or considerations.
 
                            INVESTMENT RESTRICTIONS
 
  The Fund is subject to certain investment restrictions which, as described in
more detail in the Additional Statement, are fundamental policies that cannot
be changed without the approval of a majority of the outstanding shares of the
Fund. Among other restrictions, as a diversified Fund, the Fund may not, with
respect to 75% of its total assets, purchase the securities of any one issuer
(except U.S. Government securities) if more than 5% of the value of the Fund's
assets would be invested in such issuer. The Fund has the authority to borrow
money but only (a) as a temporary measure, and then only in amounts not
exceeding 5% of the value of the Fund's net assets (excluding any amount
borrowed) or (b) from banks, provided that immediately after any such borrowing
all borrowings of the Fund do not exceed one-third of the Fund's net assets
(excluding any amount borrowed). The Fund does not intend to borrow for
investment leverage purposes but solely for extraordinary or emergency purposes
or to facilitate management of the Fund by enabling it to meet redemption
requests when the liquidation of portfolio instruments is deemed to be
disadvantageous or not possible. The Fund may not purchase securities while
such borrowings exceed 5% of the value of the Fund's total assets.
 
                               PORTFOLIO TURNOVER
 
  It is anticipated that the portfolio turnover rate of the Fund will vary from
year to year. The portfolio turnover rate is computed by dividing the lesser of
the amount of securities purchased or securities sold (excluding all securities
whose maturities at acquisition are one year or less) by the average monthly
value of such securities owned during the year. A 100% turnover rate would
occur, for example, if all of the securities held by the Fund were sold and
replaced within one year. The Investment Adviser will not consider the
portfolio turnover rate a limiting factor in making investment decisions for
the Fund consistent with the Fund's investment objective and portfolio
management policies. A higher rate of portfolio turnover results in increased
transaction costs to the Fund. The portfolio turnover rate includes the effect
of entering into mortgage dollar rolls.
 
                                       18
<PAGE>
 
                                   MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct and supervise the Fund's
daily business operations. The Additional Statement contains information as to
the identity of, and other information about, the Trustees and officers of the
Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Funds Management, L.P., One New York Plaza, New York, New York,
10004, a Delaware limited partnership which is an affiliate of Goldman Sachs,
acts as the investment adviser of the Fund. Goldman Sachs Funds Management,
L.P. was registered as an investment adviser in 1990. As of January 31, 1995,
the Investment Adviser, together with its affiliates, acted as investment
adviser, administrator or distributor for approximately $48.7 billion in
assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Funds
Management, L.P., subject to the general supervision of the Board of Trustees,
manages the Fund's portfolio and provides for the administration of all of the
Fund's other affairs. It is the responsibility of the Investment Adviser to
make investment decisions for the Fund and to place purchase and sale orders
for the Fund's portfolio transactions. Such orders may be directed to any
broker including, to the extent and in the manner permitted by applicable law,
Goldman Sachs or its affiliates. Goldman Sachs has agreed to permit the Fund to
use the name "Goldman Sachs" or a derivative thereof as part of the Fund's name
for as long as the Investment Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Jonathan A. Beinner and Theodore T. Sotir.
Mr. Beinner specializes in investing in a particular type of security the Fund
may hold. Mr. Sotir helps with overall portfolio strategy and is a member of
the Investment Adviser's risk control team. Mr. Beinner joined the Investment
Adviser in 1990 and is currently a Vice President, after working in the trading
and arbitrage group of Franklin Savings Association. Mr. Sotir joined the
Investment Adviser in 1993 and is currently a Vice President, after working as
a portfolio manager at Fidelity Management Trust Company. Prior to joining
Fidelity, Mr. Sotir worked for Goldman Sachs in the mortgage securities
department for six years.
 
  As compensation for the services rendered to the Fund by the Investment
Adviser pursuant to the Investment Advisory Agreement, and the assumption by
the Investment Adviser of the expenses related thereto, the Fund pays the
Investment Adviser a fee, computed daily and payable monthly, at an annual rate
equal to 0.50% of the Fund's average daily net assets. For the fiscal year
ended October 31, 1994, the Fund paid an advisory fee to the Investment Adviser
at the annual rate of 0.40% of the Fund's average daily net assets.
 
  The Investment Adviser has voluntarily agreed not to impose a portion of its
advisory fee (equal to 0.10% of the Fund's average daily net assets) and to
reduce or otherwise limit certain expenses of the Fund (excluding advisory
fees, payments to Service Organizations (as defined below), taxes, interest and
brokerage and litigation, indemnification and other extraordinary expenses) to
the extent such expenses exceed 0.05% annually of the Fund's average net
assets. Such reductions or limits, if any, are calculated monthly on a
cumulative basis and may be discontinued or modified by the Investment Adviser
at its
 
                                       19
<PAGE>
 
discretion at any time. The Investment Adviser has also agreed to reduce its
fees payable (to the extent of such fees) by the amount the Fund's expenses
would, absent the fee reduction, exceed the applicable expense limitations
imposed by state securities administrators. See "Management--Expenses" in the
Additional Statement.
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser, Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts and
other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities and instruments as
the Fund. Goldman Sachs and its affiliates will not have any obligation to make
available any information regarding their proprietary activities or strategies,
or the activities or strategies used for other accounts managed by them, for
the benefit of the management of the Fund and it is not anticipated that the
Investment Adviser will have access to proprietary information for the purpose
of managing the Fund. The results of the Fund's investment activities,
therefore, may differ from those of Goldman Sachs and its affiliates and it is
possible that the Fund could sustain losses during periods in which Goldman
Sachs and its affiliates and other accounts achieve significant profits on
their trading for proprietary or other accounts. From time to time, the Fund's
activities may be limited because of regulatory restrictions applicable to
Goldman Sachs and its affiliates, and/or their internal policies designed to
comply with such restrictions. See "Activities of Goldman Sachs and its
Affiliates and Other Accounts Managed by Goldman Sachs" in the Additional
Statement for further information.
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact Goldman
Sachs (as Transfer Agent) at the address or the telephone number set forth on
the cover page of this Prospectus.
 
                                   DIVIDENDS
 
  The Fund intends that all or substantially all of its net investment income
will be declared as a dividend on each day to shareholders of record as of 3:00
p.m. Chicago time on that day. Over the course of the fiscal year, dividends
accrued and paid will constitute all or substantially all of the Fund's net
investment income. From time to time a portion of such dividends may constitute
a return of capital. The Fund also intends that all net realized long-term and
short-term capital gains will be declared as a dividend at least annually. In
determining amounts of capital gains to be distributed, capital losses
including any available capital loss carryovers from prior years will be offset
against capital gains.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination is
made as of 3:00 p.m. Chicago time.
 
                                       20
<PAGE>
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case payment
will be made on the first Business Day of the succeeding month. Payment of
dividends with respect to capital gains, if any, when declared will be made in
additional shares of the Fund at the net asset value on the payment date,
unless cash distributions are elected. This election to receive dividends in
cash is initially made on the Account Information Form and may be changed upon
written notice to the Transfer Agent at any time prior to the record date for a
particular dividend or distribution. If cash dividends are elected with respect
to the Fund's monthly net investment income dividends then cash dividends must
also be elected with respect to the non-long term capital gains component, if
any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or unrealized appreciation of the Fund's portfolio securities. Therefore,
subsequent distributions (or portions thereof) on such shares may be taxable to
the investor even if the net asset value of the shares is, as a result of the
distributions, reduced below the cost of such shares and the distributions (or
portions thereof) represent a return of a portion of the purchase price.
 
                                NET ASSET VALUE
 
  The net asset value per share is calculated by the Fund's custodian as of the
close of regular trading on the New York Stock Exchange (normally 3:00 p.m.
Chicago time, 4:00 p.m. New York time), immediately after determination of the
income to be declared as a dividend on each Business Day (as such term is
defined under "Additional Information"). Net asset value per share of each
class is calculated by determining the net assets attributable to each class
and dividing by the number of outstanding shares of that class.
 
  Investments in U.S. Government Securities, including Mortgage-Backed
Securities, and other debt obligations are valued at fair value, based on yield
equivalents, a pricing matrix or other sources, under valuation procedures
established by the Trust's Board of Trustees. Other portfolio securities for
which accurate market quotations are readily available are valued on the basis
of quotations furnished by pricing services or provided by dealers in such
securities. Portfolio securities for which accurate market quotations are not
readily available are valued in accordance with the Trust's valuation
procedures. Debt obligations with a remaining maturity of 60 days or less are
valued at amortized cost. The Board of Trustees has determined that the
amortized cost of such securities approximates fair market value.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish yield and average annual total return
in advertisements and communications to shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
                                       21
<PAGE>
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most recent
calendar quarter, assuming reinvestment of all dividends and distributions at
net asset value. The total return calculation assumes a complete redemption of
the investment at the end of the relevant period. The Fund may also from time
to time advertise total return on an cumulative, average, year-by-year or other
basis for various specified periods by means of quotations, charts, graphs or
schedules. In addition to the above, the Fund may from time to time advertise
its performance relative to certain performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value for the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided in
shareholder reports, the Fund may, in its discretion, from time to time make a
list of the Fund's holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of shares in existence. Because each class of shares may be subject
to different expenses, the yield, total return and distribution rate
calculations with respect to each class of shares of the Fund for the same
period will differ. Due to the fees payable under the Service Plan and the
Administration Plan, the investment performance, for any period, of the
Institutional Shares will always be higher than that of the Service Shares and
the Administration Shares and the investment performance of the Administration
Shares will always be higher than that of the Service Shares. See "Shares of
the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement, the Trustees are
authorized to issue an unlimited number of shares of beneficial interest, $.001
par value per share. The Trustees of the Trust are responsible for the overall
management and supervision of its affairs. The Trustees of the Trust have
authority under the Trust Agreement to create and classify shares of beneficial
interest in separate series, without further action by shareholders. As of the
date of this Prospectus, the Trustees have authorized shares of the Fund and
ten other series. Additional series may be added in the future. The Trustees
also have authority to classify or reclassify any series or portfolio of shares
into one or more classes. Pursuant thereto, the Trustees have authorized the
issuance of three classes of shares of the Fund. These classes are:
Institutional Shares, Administration Shares and Service Shares. As of October
31, 1994, no Service Shares of the Fund were outstanding.
 
  Each Institutional Share, Administration Share and Service Share of the Fund
represents an equal proportionate interest in the assets belonging to the Fund.
All Fund expenses are based on a percentage of the Fund's aggregate average net
assets, except that the respective administration and service fees relating to
a particular class will be borne exclusively by that class. It is contemplated
that most Administration Shares and Service Shares will be held in accounts of
which the record owner is a bank or other institution acting, directly or
through an agent, as nominee for its customers who are the beneficial
 
                                       22
<PAGE>
 
owners of the shares or another organization designated by such bank or
institution. Administration Shares and Service Shares will each be marketed
only to such institutional investors, at net asset value with no sales load.
Institutional Shares may be purchased for accounts in the name of an investor
or institution that is not compensated by the Fund for services provided to the
institution's customers. Administration Shares may be purchased for accounts
held in the name of an institution that provides certain account administration
services to its customers, including maintenance of account records and
processing orders to purchase, redeem or exchange Administration Shares.
Administration Shares bear the cost of account administration fees at the
annual rate of up to 0.25% of the average daily net assets of such
Administration Shares. Service Shares may be purchased for accounts held in the
name of an institution that provides certain account administration and
shareholder liaison services to its customers, including maintenance of account
records and processing orders to purchase, redeem or exchange Service Shares,
responding to customer inquiries and assisting customers with investment
procedures. Service Shares bear the cost of service fees at the annual rate of
up to 0.50% of the average daily net assets of such Service Shares.
(Institutions that provide services to holders of Administration or Service
Shares are referred to in this Prospectus as "Service Organizations").
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration and Service Shares) to
its customers and thus receive different compensation with respect to different
classes of shares of the Fund. Administration Shares and Service Shares may
each have certain exclusive voting rights on matters relating to their
respective plans. Shares of each class may be exchanged only for shares of the
same class in another fund and certain money market funds sponsored by Goldman
Sachs. The Fund may amend such policy in the future. Dividends paid by the
Fund, if any, with respect to each class of shares will be calculated in the
same manner, at the same time on the same day and will be in the same amount,
except for differences caused by the fact that the respective fees under
Administration and Service Plans relating to a particular class will be borne
exclusively by that class. Similarly, the net asset value per share will vary
depending on the class of shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or conversion rights.
 
  Under Massachusetts law, there is a remote possibility that shareholders of a
business trust could, under certain circumstances, be held personally liable as
partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
  Unless otherwise required by the Act, ordinarily it will not be necessary for
the Trust to hold annual meetings of shareholders. As a result, shareholders
may not consider each year the election of Trustees or the appointment of
independent accountants. Shareholders may remove a Trustee by the affirmative
 
                                       23
<PAGE>
 
vote of at least two-thirds of the Trust's outstanding shares and the Trustees
must promptly call a meeting for such purpose when requested to do so in
writing by the recordholders of not less than 10% of the outstanding shares of
the Trust. Shareholders may, under certain circumstances, communicate with
other shareholders in connection with requesting a special meeting of
shareholders. The Board of Trustees, however, will call a special meeting for
the purpose of electing Trustees if, at any time, less than a majority of
Trustees holding office at the time were elected by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue share
certificates. Instead, the Transfer Agent maintains a record of each
shareholder's ownership. Each shareholder receives confirmation of purchase and
redemption orders from the Transfer Agent. Shares and any dividends and
distributions paid by the Fund are reflected in account statements from the
Transfer Agent.
 
                                    TAXATION
 
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code, and it intends to continue to qualify for such
treatment. To qualify for treatment as a regulated investment company, the Fund
must satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
  Dividends paid by the Fund from net investment income, the excess of net
short-term capital gain over net long-term capital loss and original issue
discount or certain market discount income will be taxable to shareholders as
ordinary income. Dividends paid by the Fund from the excess of net long-term
capital gain over net short-term capital loss will be taxable as long-term
capital gains regardless of how long the shareholders have held their shares.
These tax consequences will apply regardless of whether distributions are
received in cash or reinvested in shares. Certain distributions paid by the
Fund in January of a given year may be taxable to shareholders as if received
the prior December 31. Shareholders will be informed annually about the amount
and character of distributions received from the Fund for federal income tax
purposes.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
even though the distribution represents a return of a portion of the purchase
price.
 
  Redemptions and exchanges of shares are taxable events on which a shareholder
may recognize a gain or loss.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on distributions, redemptions and
exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other shareholders
that are not U.S. persons under the Code are subject to different tax rules and
may be subject to nonresident alien withholding at the rate of 30% (or a lower
rate provided by an applicable tax treaty) on amounts treated as ordinary
dividends from the Fund.
 
                                       24
<PAGE>
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local or
foreign taxes on payments received from the Fund. A state income (and possibly
local income and/or intangible property) tax exemption is generally available
to the extent the Fund's distributions are derived from interest on (or, in the
case of intangibles taxes, the value of its assets is attributable to) certain
U.S. Government obligations, provided in some states that certain thresholds
for holdings of such obligations and/or reporting requirements are satisfied.
 
  Shareholders should consult their own tax advisors regarding specific
questions as to United States federal, state, local and foreign tax
consequences of investing in the Fund in their particular circumstances. See
the Additional Statement for a further discussion of certain tax consequences
of investing in shares of the Fund.
 
                             ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at a meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days when
the Investment Adviser, The Northern Trust Company, State Street Bank and Trust
Company and the Federal Reserve Bank of New York are open for business, which
is Monday through Friday except for holidays. Such holidays currently are: New
Year's Day (observed), Martin Luther King Day, Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Columbus Day,
Thanksgiving Day and Christmas. On those days when one or more of such
organizations close early as a result of such day being a partial holiday or
otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                       25
<PAGE>
 
                            REPORTS TO SHAREHOLDERS
 
  Institutional Shareholders will receive an annual report containing audited
financial statements and a semi-annual report. Each Institutional Shareholder
will also be provided with a printed confirmation for each transaction in the
shareholder's account and an individual monthly statement. A year-to-date
statement for any account will be provided upon request made to Goldman Sachs.
 
SUB-ACCOUNTING SERVICE
 
  The Fund has designed special procedures to assist banks and other
institutional investors desiring to establish multiple accounts (master
accounts and their sub-accounts). Sub-accounts may be established with
registration by name and/or number. Institutions will not normally be charged
for this service unless otherwise agreed upon. Upon request, master accounts
will be provided with a monthly summary report which sets forth in order by
account number (or name) the share balance at month end and the income, if any,
together with the total share balance and income, if any, for the master
account.
 
                        PURCHASE OF INSTITUTIONAL SHARES
 
  Institutional Shares of the Fund may be purchased through Goldman Sachs at
the net asset value per share next determined after receipt of an order without
the imposition of a sales load. If, by 3:00 p.m. Chicago time (4:00 p.m. New
York time), an order, a check or a Federal Reserve draft is received by Goldman
Sachs, the price per share will be the net asset value per share computed on
the day the purchase order or such form of payment is received. See "Net Asset
Value."
 
PURCHASE PROCEDURES
 
  Purchases of Institutional Shares may be made by placing an order with
Goldman Sachs at 800-621-2550 and either wiring Federal Funds to The Northern
Trust Company ("Northern") as subcustodian for State Street Bank and Trust
Company ("State Street") on the next Business Day or initiating an ACH transfer
to ensure receipt by Northern on the next Business Day. Purchases may also be
made by check (except that a check drawn on a foreign bank will not be
accepted) or Federal Reserve draft made payable to "Goldman Sachs Trust--GS
Short-Term Government Agency Fund" and should be directed to Goldman Sachs
Trust--GS Short-Term Government Agency Fund, c/o GSAM Shareholder Services,
4900 Sears Tower, Chicago, Illinois 60606. Payment of the proceeds of
redemption of shares purchased by check may be delayed for a period of time as
described under "Redemption of Institutional Shares."
 
  In order to make an initial investment in the Fund, an investor must
establish an account with the Fund by furnishing necessary information to the
Fund or Goldman Sachs. An Account Information Form, a copy of which is attached
to this Prospectus, should be used to establish such an account. Subsequent
purchases of Institutional Shares may be made in the manner set forth in the
preceding paragraph.
 
  The minimum initial investment is $50,000 in Institutional Shares of the Fund
alone or in combination with Institutional Shares of any other mutual fund
sponsored by Goldman Sachs and designated as an eligible fund for this purpose
and the relevant class of any portfolio of Goldman Sachs Money Market Trust.
The minimum investment requirement may be waived for current and former
officers, partners, directors or employees of Goldman Sachs or any of its
affiliates or for other investors at the discretion of the Trust's officers. No
minimum amount is required for subsequent investments. The Fund reserves the
 
                                       26
<PAGE>
 
right to redeem the Institutional Shares of any Institutional Shareholder whose
account balance is less than $100 as a result of earlier redemptions. Such
redemptions will not be implemented if the value of an Institutional
Shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days prior written
notice to Institutional Shareholders whose Institutional Shares are being
redeemed to allow them to purchase sufficient additional Institutional Shares
of the Fund to avoid such redemption.
 
OTHER PURCHASE INFORMATION
 
  PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is
received by Goldman Sachs by 3:00 p.m. Chicago time, the purchased shares will
be issued and dividends will begin on such shares on the next Business Day,
provided that a Federal Funds wire or an ACH transfer is received by Northern
on such day.
 
  PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a purchase check or Federal
Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and dividends will begin on such shares on the
next Business Day after the check or Federal Reserve draft is received by
Goldman Sachs.
 
  Banks, trust companies or other institutions through which investors acquire
Institutional Shares may impose charges in connection with transactions in
Institutional Shares. Such institutions should be consulted for information
regarding such charges.
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges by a
particular purchaser (or group of related purchasers). The Fund or Goldman
Sachs may reject or restrict purchases or exchanges of Institutional Shares by
a particular purchaser or group, for example, when a pattern of frequent
purchases and sales or exchanges of Institutional Shares of the Fund is
evident, or if the purchase, sale or exchange orders are, or a subsequent
abrupt redemption might be, of a size that would disrupt management of the
Fund.
 
                               EXCHANGE PRIVILEGE
 
  Institutional Shares of the Fund may be exchanged for (i) Institutional
Shares of any other mutual fund sponsored by Goldman Sachs and designated as an
eligible fund for this purpose and (ii) the relevant class of any portfolio of
Goldman Sachs Money Market Trust at the net asset value next determined either
by writing to Goldman Sachs, Attention: Goldman Sachs Trust--GS Short-Term
Government Agency Fund, c/o GSAM Shareholder Services, 4900 Sears Tower,
Chicago, Illinois 60606 or, if previously elected in the Fund's Account
Information Form, by telephone at 800-621-2550 (7:00 a.m. to 3:00 p.m. Chicago
time). A shareholder should obtain and read the prospectus relating to any
other fund and its shares or units and consider its investment objective,
policies and applicable fees before making an exchange. Under the telephone
exchange privilege, Institutional Shares may be exchanged among accounts with
different names, addresses and social security or other taxpayer identification
numbers only if the exchange request is in writing and is received in
accordance with the procedures set forth under "Redemption of Institutional
Shares."
 
 
                                       27
<PAGE>
 
  In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Institutional Shares" to confirm
that such instructions are genuine. For federal income tax purposes, an
exchange is treated as a sale of the Institutional Shares surrendered in the
exchange, on which an investor may realize a gain or loss, followed by a
purchase of Institutional Shares, or the relevant class of any portfolio of
Goldman Sachs Money Market Trust received in the exchange. Shareholders should
consult their own tax advisers concerning the tax consequences of an exchange.
 
  All exchanges which represent an initial investment in a fund must satisfy
the minimum investment requirements of the fund into which the Institutional
Shares are being exchanged, except that this requirement may be waived at the
discretion of the officers of such fund. Exchanges are available only in states
where exchanges may legally be made. The exchange privilege may be modified or
withdrawn at any time on sixty (60) days' written notice to Institutional
Shareholders and is subject to certain limitations. See "Purchase of
Institutional Shares."
 
                       REDEMPTION OF INSTITUTIONAL SHARES
 
  The Fund will redeem its Institutional Shares upon request of an
Institutional Shareholder on any Business Day at the net asset value next
determined after the receipt by the Transfer Agent of such request in proper
form. See "Net Asset Value." If Institutional Shares to be redeemed were
recently purchased by check, the Fund may delay transmittal of redemption
proceeds until such time as it has assured itself that good funds have been
collected for the purchase of such Institutional Shares. This may take up to
fifteen (15) days. Redemption requests may be made by writing to or calling the
Transfer Agent at the address or telephone number set forth on the cover page
of this Prospectus. An Institutional Shareholder may request redemptions by
telephone if the optional telephone redemption privilege is elected on the
Account Information Form accompanying this Prospectus. It may be difficult to
implement redemptions by telephone in times of drastic economic or market
changes.
 
  In an effort to prevent unauthorized or fraudulent redemption or exchange
requests by telephone, Goldman Sachs employs reasonable procedures specified by
the Trust to confirm that such instructions are genuine. Among other things,
any redemption request that requires money to go to an account or address other
than that designated on the Account Information Form must be in writing and
signed by an authorized person designated on the Account Information Form. Any
such written request is also confirmed by telephone with both the requesting
party and the designated bank account to verify instructions. Exchanges among
accounts with different names, addresses and social security or other taxpayer
identification numbers must be in writing and signed by an authorized person
designated on the Account Information Form. Other procedures may be implemented
from time to time. If reasonable procedures are not implemented, the Trust may
be liable for any loss due to unauthorized or fraudulent transactions. In all
other cases, neither the Fund, the Trust nor Goldman Sachs will be responsible
for the authenticity of redemption or exchange instructions received by
telephone.
 
  Written requests for redemptions must be signed by each Institutional
Shareholder, whose signature has been guaranteed by a bank, a securities broker
or dealer, a credit union having authority to issue signature guarantees, a
savings and loan association, a building and loan association, a cooperative
 
                                       28
<PAGE>
 
bank, a federal savings bank or association, a national securities exchange, a
registered securities association or a clearing agency, provided that such
institution satisfies the standards established by the Transfer Agent. If
Goldman Sachs receives a redemption request by 3:00 p.m. Chicago time, the
Institutional Shares to be redeemed earn dividends with respect to the day the
request is received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired as Federal Funds to the bank account designated in the
Institutional Shareholder's Account Information Form. Redemption proceeds will
normally be wired on the next Business Day in Federal Funds (for a total one-
day delay), but may be paid up to seven (7) days after receipt of a properly
executed redemption request. Wiring of redemption proceeds may be delayed one
additional Business Day if the Federal Reserve Bank is closed on the day
redemption proceeds would ordinarily be wired. In order to change the bank
designated on the Account Information Form to receive redemption proceeds, a
written request must be received by the Transfer Agent. This request must be
signature guaranteed as set forth above. Further documentation may be required
for executors, trustees or corporations. Once wire transfer instructions have
been given by Goldman Sachs, neither the Fund, the Trust nor Goldman Sachs
assumes any further responsibility for the performance of intermediaries or the
Institutional Shareholder's bank in the transfer process. If a problem with
such performance arises, the Institutional Shareholder should deal directly
with such intermediaries or bank.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by Goldman Sachs. The request
for such redemption will not be considered to have been received in proper form
until such additional documentation has been received.
 
  Except with respect to Institutional Shareholders whose account balances are
less than $100, Institutional Shares are not redeemable at the option of the
Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                       29
<PAGE>
 
                                   APPENDIX A
 
                    GUIDELINES FOR CERTIFICATION OF TAXPAYER
               IDENTIFICATION NUMBER ON ACCOUNT INFORMATION FORM
 
  You are required by law to provide the Fund with your correct Taxpayer
Identification Number (TIN), regardless of whether you file tax returns.
Failure to do so may subject you to penalties. Failure to provide your correct
TIN and to sign your name in the Certification section of the Account
Information Form could result in withholding of 31% by the Fund for the Federal
backup withholding tax on distributions, redemptions, exchanges and other
payments relating to your account.
 
  Any tax withheld may be credited against taxes owed on your federal income
tax return.
 
  If you do not have a TIN, you should apply for one immediately by contacting
your local office of the Social Security Administration or the Internal Revenue
Service (IRS). Backup withholding could apply to payments relating to your
account while you are awaiting receipt of a TIN.
 
  Special rules apply for certain entities. For example, for an account
established under a Uniform Gifts or Transfers to Minors Act, the TIN of the
minor should be furnished.
 
  If you have been notified by the IRS that you are subject to backup
withholding because you failed to report your interest and/or dividend income
on your tax return and you have not been notified by the IRS that such
withholding should cease, you must cross out item (2) in the Certification
section of the Account Information Form.
 
  If you are an exempt recipient, you should furnish your TIN and certify your
exemption by signing the Certification section. Exempt recipients include:
corporations, tax-exempt pension plans and IRA's, governmental agencies,
financial institutions, registered securities and commodities dealers and
others.
 
  If you are a nonresident alien or foreign entity, you must provide a
completed Form W-8 to the Fund in order to avoid withholding on certain
payments. Other payments to you may be subject to nonresident alien withholding
of up to 30%.
 
  For further information regarding backup and nonresident alien withholding,
see Sections 3406, 1441 and 1442 of the Internal Revenue Code and consult your
tax adviser.
 
                                      A-1
<PAGE>
 
 THIS ACCOUNT INFORMATION FORM SHOULD BE FORWARDED PROMPTLY TO GOLDMAN, SACHS &
                                      CO.
                 NO REDEMPTION CAN BE MADE PRIOR TO ITS RECEIPT
                   GOLDMAN, SACHS & CO.--INSTITUTIONAL FUNDS
                            ACCOUNT INFORMATION FORM
SEND TO: GOLDMAN, SACHS & CO. INSTITUTIONAL FUNDS  MASTER NO.  _________________
         4900 SEARS TOWER                                        FUND USE ONLY
         CHICAGO, ILLINOIS 60606
         1-800-621-2550                            DATE: _______________________
 
                              INITIAL INVESTMENT:
 
( ) GOLDMAN SACHS MONEY MARKET TRUST  ( ) GS--ADJUSTABLE RATE GOVERNMENT AGENCY
    Fill in Portfolio(s):                     FUND
( ) OTHER FUND (Please write name of  ( ) GS--CORE FIXED INCOME FUND
    Fund in the space provided        ( ) GS--SHORT DURATION TAX-FREE FUND
    below):                           ( ) GS--SHORT-TERM GOVERNMENT AGENCY FUND
                                      ( ) GS--GOVERNMENT AGENCY PORTFOLIO (FOR
  -------------------------------             FINANCIAL INSTITUTIONS)
 
- --------------------------------------------------------------------------------
 
A. ACCOUNT RECORD                             
                                               ---------------------------------
   ---------------------------------                  TELEPHONE NUMBER
            NAME OF ACCOUNT
 
   ---------------------------------          U.S. CITIZEN OR
          STREET OR P.O. BOX                  RESIDENT? YES [_] NO [_]
                                              IF NO IS CHECKED, FILL IN
   ---------------------------------          COUNTRY OF TAX RESIDENCE: 
   CITY         STATE          ZIP            

   ---------------------------------          -----------------------------
               ATTENTION
- --------------------------------------------------------------------------------
B. DIVIDENDS AND DISTRIBUTIONS--CHECK APPROPRIATE BOX (SEE "DIVIDENDS")
  1. DIVIDENDS (INCLUDING NET SHORT TERM       [_] CASH     [_] UNITS/SHARES
     CAPITAL GAINS)--
  2. NET LONG-TERM CAPITAL GAINS               [_] CASH     [_] UNITS/SHARES
     DISTRIBUTIONS--
  3. DIVIDENDS AND CAPITAL GAINS REINVESTED                 [_] UNITS/SHARES
     IN ANOTHER GOLDMAN SACHS PORTFOLIO ACCOUNT:
   (SEE PROSPECTUS REGARDING LIMITATIONS ON THIS PRIVILEGE.)
 
   FUND NAME_________________________ ACCOUNT NUMBER__________________________
    (IF NO BOX IS CHECKED, DIVIDENDS AND CAPITAL GAINS DISTRIBUTIONS WILL BE
                                  REINVESTED.)
- --------------------------------------------------------------------------------
C. SOCIAL SECURITY NUMBER OR OTHER TAXPAYER IDENTIFICATION NUMBER CERTIFICATION
   TAXPAYER IDENTIFICATION NUMBER: _____________________________________________
   UNDER PENALTIES OF PERJURY, I CERTIFY THAT (1) THE NUMBER SHOWN ON THIS FORM
   IS MY CORRECT TAXPAYER IDENTIFICATION NUMBER (OR I AM WAITING FOR A NUMBER TO
   BE ISSUED TO ME), AND (2) I AM NOT SUBJECT TO BACKUP WITHHOLDING BECAUSE I AM
   EXEMPT FROM BACKUP WITHHOLDING OR I HAVE NOT BEEN NOTIFIED BY THE INTERNAL
   REVENUE SERVICE (IRS) THAT I AM SUBJECT TO BACKUP WITHHOLDING AS A RESULT OF
   A FAILURE TO REPORT ALL INTEREST OR DIVIDENDS, OR THE IRS HAS NOTIFIED ME
   THAT I AM NO LONGER SUBJECT TO BACKUP WITHHOLDING. SEE THE "GUIDELINES FOR
   CERTIFICATION OF TAXPAYER IDENTIFICATION NUMBER" ON ACCOUNT INFORMATION FORM,
   CONTAINED IN THE APPENDIX TO THE ACCOMPANYING PROSPECTUS.
 
      SIGNATURE             DATE              NAME (PRINT) AND TITLE (IF ANY)

SIGN 
HERE  -------------------------------      -------------------------------------
 
      -------------------------------      -------------------------------------
- --------------------------------------------------------------------------------
D. OPTIONAL TELEPHONE EXCHANGE (SEE "EXCHANGE PRIVILEGE")
   [_] GOLDMAN, SACHS & CO. IS HEREBY AUTHORIZED TO ACCEPT AND ACT UPON
   TELEPHONE INSTRUCTIONS FROM THE UNDERSIGNED OR ANY OTHER PERSON FOR THE
   EXCHANGE OF SHARES/UNITS OF THE FUND INTO ANY FUND DESCRIBED IN THE
   ACCOMPANYING PROSPECTUS. THE UNDERSIGNED UNDERSTANDS AND AGREES THAT NEITHER
   THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. WILL BE LIABLE FOR ANY LOSS,
   EXPENSE, OR COST ARISING OUT OF ANY TELEPHONE REQUEST EFFECTED HEREUNDER.
<PAGE>
 
- --------------------------------------------------------------------------------
 
E. OPTIONAL REDEMPTION PLANS--CHECK APPROPRIATE BOX (SEE "REDEMPTION OF
   UNITS/SHARES")
   [_] 1. I AUTHORIZE GOLDMAN, SACHS & CO. TO HONOR TELEPHONE, TELEGRAPHIC, OR
   OTHER INSTRUCTIONS WITHOUT SIGNATURE GUARANTEE, FROM ANY PERSON FOR THE
   REDEMPTION OF SHARES FOR THE ABOVE ACCOUNT PROVIDED THAT THE PROCEEDS ARE
   TRANSMITTED TO THE FOLLOWING BANK ACCOUNT(S) ONLY. I UNDERSTAND ANY CHANGES
   TO THE FOLLOWING INFORMATION MUST BE MADE IN WRITING TO GOLDMAN, SACHS & CO.,
   MUST CONTAIN THE APPROPRIATE NUMBER OF SIGNATURES LISTED BELOW AND ALL
   SIGNATURES MUST BE SIGNATURE GUARANTEED. ABSENT ITS OWN GROSS NEGLIGENCE,
   NEITHER THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. SHALL BE LIABLE FOR SUCH
   REDEMPTIONS OR FOR PAYMENTS MADE TO ANY UNAUTHORIZED ACCOUNT.
                                       OR
   [_] 2. I HAVE FURNISHED GOLDMAN, SACHS & CO. WITH A SIGNATURE GUARANTEE (SEE
   SECTION G). I AUTHORIZE GOLDMAN, SACHS & CO. TO HONOR TELEPHONE, TELEGRAPHIC,
   OR OTHER INSTRUCTIONS, FROM ANY PERSON FOR THE REDEMPTION OF SHARES FOR THE
   ABOVE ACCOUNT PROVIDED THAT THE PROCEEDS ARE TRANSMITTED TO THE FOLLOWING
   BANK ACCOUNT(S) ONLY. ANY CHANGES TO THE FOLLOWING INFORMATION MUST BE MADE
   IN WRITING TO GOLDMAN, SACHS & CO. (BUT WITHOUT SIGNATURE GUARANTEE) AND
   CONTAIN THE APPROPRIATE NUMBER OF SIGNATURES LISTED BELOW. ABSENT ITS OWN
   GROSS NEGLIGENCE, NEITHER THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. SHALL
   BE LIABLE FOR SUCH REDEMPTIONS OR FOR PAYMENTS MADE TO ANY UNAUTHORIZED
   ACCOUNT.
 
PLEASE COMPLETE THE FOLLOWING BANK ACCOUNT INFORMATION AND PLACE A LINE THROUGH
THE UNUSED PORTION. ADDITIONAL INSTRUCTIONS MAY BE ADDED ON SEPARATE PAGES, IF
NECESSARY.
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
NUMBER OF BANK ACCOUNT DESTINATIONS COMPLETED IN SECTION E OF THIS FORM: [_]
 
- --------------------------------------------------------------------------------
  [_] 3. SPECIAL DRAFT (TRANSFER AGENT TO SUPPLY)
  [_] 4. BY MAIL
<PAGE>
 
F. SIGNATURE AUTHORIZATION
   BY THE EXECUTION OF THIS ACCOUNT INFORMATION FORM, THE UNDERSIGNED REPRESENTS
   AND WARRANTS THAT IT HAS FULL RIGHT, POWER AND AUTHORITY TO MAKE THE
   INVESTMENT APPLIED FOR PURSUANT TO THIS APPLICATION AND IS ACTING FOR ITSELF
   OR IN SOME FIDUCIARY CAPACITY IN MAKING SUCH INVESTMENT, AND THE
   INDIVIDUAL(S) SIGNING ON BEHALF OF THE UNDERSIGNED REPRESENT AND WARRANT THAT
   THEY ARE DULY AUTHORIZED TO SIGN THIS APPLICATION AND TO PURCHASE AND REDEEM
   UNITS/SHARES ON BEHALF OF THE UNDERSIGNED. THE UNDERSIGNED AFFIRMS THAT IT
   HAS RECEIVED A CURRENT FUND PROSPECTUS.

   THE UNDERSIGNED UNDERSTANDS THAT A LESSER DEGREE OF FLEXIBILITY CONCERNING
   THE PRECISE TIMING OF A REDEMPTION OF ITS INVESTMENT IN THE GS ADJUSTABLE
   RATE GOVERNMENT AGENCY FUND, GS CORE FIXED INCOME FUND, GS SHORT-TERM
   GOVERNMENT AGENCY FUND, GS SHORT DURATION TAX-FREE FUND OR GS GOVERNMENT
   AGENCY PORTFOLIO (FOR FINANCIAL INSTITUTIONS), AS WELL AS ALL OTHER NON-MONEY
   MARKET FUNDS, INCREASES THE LIKELIHOOD THAT THE SHAREHOLDER WILL BE REQUIRED
   TO REDEEM SHARES UNDER UNFAVORABLE MARKET CONDITIONS. IF SHARES ARE REDEEMED
   AT A DISADVANTAGEOUS TIME, THE VALUE OF THE FUND'S SHARES UPON REDEMPTION MAY
   BE LESS THAN THE PRICE AT WHICH THE FUND'S SHARES WERE PURCHASED. SINCE NONE
   OF THE FUNDS LISTED IN THIS PARAGRAPH IS A MONEY MARKET FUND OR MAINTAINS A
   CONSTANT NET ASSET VALUE PER SHARE, THE UNDERSIGNED MAY EXPERIENCE A LOSS OF
   PRINCIPAL ON ITS INVESTMENTS IN ANY SUCH FUND DURING ANY PARTICULAR PERIOD.

               SIGNATURE                       NAME (PRINT) AND TITLE (IF ANY)
 
SIGN
HERE  ---------------------------------       ---------------------------------

      ---------------------------------       ---------------------------------

      ---------------------------------       ---------------------------------

NUMBER OF SIGNATURES REQUIRED TO MAKE CHANGES TO THIS FORM: [_]
- --------------------------------------------------------------------------------
G. SIGNATURE GUARANTEE
                                                 AFFIX GUARANTEE STAMP HERE
   ---------------------------------
        SIGNATURE GUARANTEED BY

   ---------------------------------
         AUTHORIZED SIGNATURE
- --------------------------------------------------------------------------------
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                          PAGE
                          ----
<S>                       <C>
Summary.................    2
Financial Highlights....    7
Investment Objective and
 Policies...............    8
Investment Adviser......    9
Special Investment Meth-
 ods....................    9
Yield, Market Value and
 Risk Considerations of
 Mortgage-Backed Securi-
 ties...................   13
Other Investments and
 Practices..............   14
Investment Restrictions.   18
Portfolio Turnover......   18
Management..............   19
Dividends...............   20
Net Asset Value.........   21
Performance Information.   21
Shares of the Trust.....   22
Taxation................   24
Additional Information..   25
Reports to Shareholders.   26
Purchase of Institu-
 tional Shares..........   26
Exchange Privilege......   27
Redemption of Institu-
 tional Shares..........   28
Appendix A..............  A-1
Account Information Form
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                                 GS SHORT-TERM
                            GOVERNMENT AGENCY FUND
                             INSTITUTIONAL SHARES
 
                                  MANAGED BY
                                  ----------

                              GOLDMAN SACHS FUNDS
                               MANAGEMENT, L.P.
                                AN AFFILIATE OF
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
                                  PROSPECTUS
 
                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                                 GS SHORT-TERM
                             GOVERNMENT AGENCY FUND
                             ADMINISTRATION SHARES
 
                                   MANAGED BY
                                   ----------
                      GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
                                AN AFFILIATE OF
                              GOLDMAN, SACHS & CO.
 
                                  ------------
 
  GS Short-Term Government Agency Fund (the "Fund") is one fund in a family of
funds advised by Goldman Sachs Funds Management, L.P. (the "Investment
Adviser") or its affiliates, Goldman Sachs Asset Management and Goldman Sachs
Asset Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
  The Fund's objective is to achieve a high level of current income.
Secondarily, the Fund may, in seeking current income, also consider the
potential for capital gain. The Fund pursues its objectives through investment
in securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities and repurchase agreements pertaining thereto. These
securities may include mortgage pass-through securities and other securities
representing an interest in or collateralized by mortgages. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities.
 
  Goldman Sachs Funds Management, L.P., New York, New York, an affiliate of
Goldman, Sachs & Co., serves as the Fund's investment adviser. Goldman, Sachs &
Co. serves as the Fund's distributor and transfer agent. The Trust's custodian
is State Street Bank and Trust Company.
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Administration Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from institutions ("Service Organizations") that hold,
directly or through an agent, Administration Shares for the benefit of their
customers, or Goldman, Sachs & Co. by calling the telephone number, or writing
to one of the addresses, listed below.
 
ADMINISTRATION SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR
GUARANTEED OR ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION,
AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
RESERVE BOARD OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN ADMINISTRATION
SHARES OF THE FUND INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF
PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
GOLDMAN SACHS TRUST                       GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
4900 SEARS TOWER                          INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606                   ONE NEW YORK PLAZA
                                          NEW YORK, NEW YORK 10004
 
 
GOLDMAN, SACHS & CO.                      GOLDMAN, SACHS & CO.   
DISTRIBUTOR                               TRANSFER AGENT          
85 BROAD STREET                           4900 SEARS TOWER        
NEW YORK, NEW YORK 10004                  CHICAGO, ILLINOIS 60606 
                                                                  
TOLL FREE (IN U.S.).......................800-621-2550
 
                 The date of this Prospectus is March 1, 1995.
<PAGE>
 
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Short-Term Government Agency Fund (the "Fund") is one fund in a family of
funds advised by Goldman Sachs Funds Management, L.P. (the "Investment
Adviser") or its affiliates, Goldman Sachs Asset Management and Goldman Sachs
Asset Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's objective is to achieve a high level of current income.
Secondarily, the Fund may, in seeking current income, also consider the
potential for capital gain. The Fund invests exclusively in (a) securities
issued or guaranteed as to principal and interest by the U.S. Government, its
agencies or instrumentalities ("U.S. Government securities") deemed to have
remaining maturities or (in the case of mortgage-related securities) estimated
average lives of 6 years or less, and (b) repurchase agreements pertaining
thereto. The Fund will invest, under normal market conditions, at least 65% of
its total assets in securities issued by U.S. Government agencies or
instrumentalities and in repurchase agreements pertaining to U.S. Government
securities. The U.S. Government securities in which the Fund may invest include
mortgage-related securities. Under normal circumstances, substantially all of
the Fund's assets will be invested in securities issued or guaranteed by the
U.S. Government, its agencies or instrumentalities.
 
  The Fund may employ certain active management techniques to hedge the
interest rate risks associated with the Fund's portfolio securities, to enhance
its return and to seek to reduce fluctuation in its net asset value. These
include, but are not limited to, mortgage and interest rate swaps and interest
rate floors, caps and collars. The Fund may also utilize portfolio securities
lending, mortgage dollar rolls and repurchase agreements in an attempt to
enhance the return achieved by the Fund. See "Investment Objective and
Policies" and "Other Investments and Practices." There can be no assurance that
the Fund will achieve its investment objective.
 
  The Fund may, for temporary defensive purposes, hold or invest more than 35%
of its total assets in cash, U.S. Treasury securities or high quality money
market instruments, including commercial paper, bankers' acceptances,
repurchase agreements or other debt obligations with a remaining maturity of
one year or less. The Fund will maintain a dollar weighted average portfolio
maturity (as defined below) of 3 years or less.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Funds Management,
L.P, an affiliate of Goldman, Sachs & Co. ("Goldman Sachs"), serves as the
Fund's investment adviser. In this capacity, the Investment Adviser provides
investment advisory and administrative services and receives from the Fund a
monthly fee equal on an annual basis to 0.50% of the Fund's average daily net
assets. Goldman Sachs Funds Management, L.P. is registered with the Securities
and Exchange Commission (the "SEC") as an investment adviser. See "Investment
Adviser" and "Management--Investment Adviser."
 
                                       2
<PAGE>
 
 
                PURCHASE AND REDEMPTION OF ADMINISTRATION SHARES
 
  It is expected that all purchasers of Administration Shares of the Fund will
be Service Organizations or their nominees. Customers of Service Organizations
may invest in Administration Shares only through their Service Organizations.
Administration Shares of the Fund may be purchased by Service Organizations
through Goldman Sachs at the current net asset value per share without the
imposition of a sales load. The Fund does not have any minimum purchase or
account requirements with respect to Administration Shares. A Service
Organization may, however, impose a minimum amount for initial and subsequent
investments in Administration Shares, and may establish other requirements such
as a minimum account balance. See "Purchase of Administration Shares." The Fund
will redeem its Administration Shares upon request of a shareholder on any
Business Day at the net asset value next determined after receipt of such
request in proper form. See "Redemption of Administration Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
inquiries from Service Organizations. See "Management--Distributor and Transfer
Agent."
 
                                  RISK FACTORS
 
  INVESTMENT IN MORTGAGE-BACKED SECURITIES GENERALLY. The Fund's investments in
mortgage pass-through securities and other securities representing an interest
in or collateralized by adjustable-rate and fixed-rate mortgage loans
("Mortgage-Backed Securities") entail certain risks. These risks include the
failure of an issuer or guarantor to meet its obligations, adverse interest
rate changes, adverse economic, real estate or unemployment trends, failure in
connection with processing of transactions and the effects of prepayments on
mortgage cash flows. The Fund's policy of investing in securities issued by
U.S. Government agencies or instrumentalities is designed, however, to minimize
credit and performance related risks otherwise associated with Mortgage-Backed
Securities.
 
  The securities in the Fund's portfolio will tend to decrease in value when
interest rates rise and increase in value when interest rates fall. Because the
Fund's investments are interest rate sensitive, the Fund's performance will
depend in large part upon the ability of the Fund to respond to fluctuations in
market interest rates and to utilize appropriate strategies to maximize returns
to the Fund, while attempting to minimize the associated risks to its invested
capital. Operating results will also depend upon the availability of
opportunities for the investment of the Fund's assets, including purchases and
sales of suitable securities.
 
  YIELD CHARACTERISTICS AND MARKET RISKS. The yield characteristics of the
Mortgage-Backed Securities in which the Fund may invest differ from those of
traditional fixed-income securities. The major differences typically include
more frequent interest and principal payments (usually monthly) on Mortgage-
Backed Securities, the adjustability of interest rates and the possibility that
prepayments of principal may be made at any time.
 
                                       3
<PAGE>
 
 
  Prepayment rates on Mortgage-Backed Securities are influenced by changes in
current interest rates and a variety of economic, geographic, social and other
factors and cannot be predicted with certainty. Both adjustable rate mortgage
loans and fixed rate mortgage loans may be subject to a greater rate of
principal prepayments in a declining interest rate environment and to a lesser
rate of principal prepayments in an increasing interest rate environment. Under
certain interest rate and prepayment rate scenarios, the Fund may fail to
recoup fully its investment in some of the Mortgage-Backed Securities it holds
notwithstanding a direct or indirect governmental or agency guarantee. The Fund
intends to use hedging techniques to control this risk. See "Investment
Objective and Policies" and "Other Investments and Practices." When the Fund
reinvests amounts representing scheduled payments and unscheduled prepayments
of principal, it may receive a rate of interest that is lower than the rate on
its existing portfolio of mortgage pass-through securities. Thus, Mortgage-
Backed Securities, and adjustable rate mortgage pass-through securities in
particular, may be less effective than other types of U.S. Government
securities as a means of "locking in" interest rates.
 
  OTHER INVESTMENTS AND PRACTICES.  The Fund may invest in other instruments,
including direct obligations of the United States, and notes, bonds and
discount notes of U.S. Government agencies or instrumentalities. The Fund may
engage in certain other investment practices that also involve special risks.
These include, but are not limited to, the use of mortgage and interest rate
swaps and interest rate floors, caps and collars, making forward commitments,
lending portfolio securities, entering into mortgage dollar rolls and
repurchase agreements. See "Other Investments and Practices."
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, its advisers and
affiliates (including the Investment Adviser), partners and officers, in the
investment activities and business operations of the Fund may present certain
conflicts of interest, as described under "Management--Investment Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends that substantially all of its net investment income will be
declared as a dividend daily to shareholders of record as of 3:00 p.m. Chicago
time on that day and will be paid monthly. Over the course of the fiscal year,
dividends accrued and paid will constitute all or substantially all of the
Fund's net investment income. From time to time a portion of such dividends may
constitute a return of capital. The Fund also intends that any net realized
capital gains, if any, after offset by any available capital loss carryforwards
from prior taxable years, will be declared as a dividend at least annually.
Recordholders of Administration Shares will receive dividends in additional
Administration Shares of the Fund or may elect to receive cash as described
under "Dividends."
 
                              ADMINISTRATION PLAN
 
  The Trust, on behalf of the Fund, has adopted an Administration Plan with
respect to the Administration Shares of the Fund which authorizes the Fund to
compensate Service Organizations for providing account administration services
to their customers who are the beneficial owners of such Shares. The Trust, on
behalf of the Fund, will enter into agreements with each Service Organization
which will provide for compensation to the Service Organization in an amount up
to 0.25% (on an annualized basis) of the average daily net assets of the
Administration Shares of the Fund attributable to or held in the name of the
Service Organization for its customers. See "Administration Plan."
 
                                       4
<PAGE>
 
 
                               FEES AND EXPENSES
                            (ADMINISTRATION SHARES)*
 
<TABLE>
<CAPTION>
                                                             GS SHORT-TERM
                                                         GOVERNMENT AGENCY FUND
                                                         ----------------------
<S>                                                      <C>
SHAREHOLDER TRANSACTION EXPENSES:
    Maximum Sales Load Imposed on Purchases.............          None
    Maximum Sales Load Imposed on Reinvested Dividends..          None
    Redemption Fees.....................................          None
    Exchange Fees.......................................          None
ANNUAL FUND OPERATING EXPENSES:
(AS A PERCENTAGE OF AVERAGE NET ASSETS)
    Management Fees (after waiver)......................          0.40%***
    Account Administration Fees.........................          0.25%**
    Other Expenses (after expense limitation)...........          0.05%***
                                                                  ----
        TOTAL FUND OPERATING EXPENSES (AFTER EXPENSE
         LIMITATION)....................................          0.70%***
                                                                  ====
</TABLE>
 
EXAMPLE:
 
 
You would pay the following expenses on a hypothetical $1,000 investment,
assuming (1) a 5% annual return and (2) redemption at the end of each time
period:
 
<TABLE>
<CAPTION>
1 YEAR  3 YEARS  5 YEARS  10 YEARS
- ------  -------  -------  --------
<S>     <C>      <C>      <C>
  $7      $22      $39      $87
</TABLE>

- --------
  * The information set forth in the foregoing table and hypothetical example
    relates only to Administration Shares of the Fund. See "Shares of the
    Trust."Institutional Shares and Service Shares of the Fund are subject to
    different fees and expenses. Institutional Shares are not subject to any
    administration or service fees. Service Shares are subject to a service fee
    of up to 0.50% of average daily net assets. All other expenses related to
    Institutional Shares and Service Shares are the same as for Administration
    Shares.
 
 ** Service Organizations (other than broker-dealers) may charge other fees to
    their customers who are beneficial owners of Administration Shares in
    connection with their customer accounts. See "Administration Plan."
 
*** The Investment Adviser agreed that a portion of its advisory fee (0.10% on
    an annual basis) would not be imposed on the Fund and that it would reduce
    or limit certain "Other Expenses" of the Fund (excluding advisory fees,
    payments to Service Organizations, taxes, interest and brokerage and
    litigation, indemnification and other extraordinary expenses) to the extent
    such expenses exceeded 0.05% per annum of the Fund's average net assets.
    Had the reduction of the advisory fee and the expense limitation not been
    reflected in the above table, the management fees, other expenses and total
    operating expenses attributable to Administration Shares of the Fund would
    have
 
                                       5
<PAGE>
 
   been .0.50%, .0.09% and 0.84%, respectively. The foregoing table and example
   also reflect current operating expenses that will be applicable on an
   ongoing basis. See "Management--Investment Adviser."
 
  The purpose of the foregoing table is to assist investors in understanding
the various costs and expenses of the Fund that an investor in the Fund will
bear directly or indirectly. The costs and expenses included in the table and
hypothetical example above should not be considered as representative of past
or future expenses. Actual fees and expenses may be greater or less than those
indicated. Moreover while the example assumes a 5% annual return, the Fund's
actual performance will vary and may result in an actual return greater or less
than 5%. See "Management" and "Administration Plan."
 
                                       6
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
         SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  The following data with respect to Institutional Shares and Administration
Shares of the Fund outstanding during the periods indicated has been audited
by Arthur Andersen LLP, independent public accountants, as indicated in their
report incorporated by reference and attached to the Additional Statement from
the Fund's annual report to shareholders for the fiscal year ended October 31,
1994 (the "Annual Report"). This information should be read in conjunction
with the financial statements and related notes incorporated by reference and
attached to the Additional Statement. The Annual Report also contains
performance information and is available upon request and without charge by
writing to any of the addresses on the cover of this Prospectus.
 
<TABLE>
<CAPTION>
                                                                              DISTRIBUTIONS TO
                           INCOME FROM INVESTMENT OPERATIONS                    SHAREHOLDERS
                           -------------------------------------   ----------------------------------------
                                                                               IN
                                           NET          TOTAL                EXCESS       FROM                  NET
                 NET ASSET   NET       REALIZED AND     INCOME     FROM NET  OF NET   NET REALIZED             ASSET
                 VALUE AT  INVEST-      UNREALIZED       FROM      INVEST-   INVEST-    GAIN ON      FROM    VALUE AT
                 BEGINNING  MENT       GAIN (LOSS)    INVESTMENT     MENT     MENT     INVESTMENT  PAID-IN      END      TOTAL
                 OF PERIOD INCOME     ON INVESTMENTS  OPERATIONS    INCOME   INCOME   TRANSACTIONS CAPITAL   OF PERIOD RETURN(b)
                 --------- -------    --------------  ----------   --------  -------  ------------ --------  --------- ---------
<S>              <C>       <C>        <C>             <C>          <C>       <C>      <C>          <C>       <C>       <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
shares..........  $10.14   $0.5628(f)    $(0.4592)(f)  $0.1036(f)  $(0.5598)     --     $(0.0438)       --     $9.64      0.99%
1994-
Administration
shares..........   10.14    0.5329(f)     (0.4539)(f)   0.0790(f)   (0.5352)     --      (0.0438)       --      9.64      0.73
1993-Institu-
tional shares...   10.16    0.5627        (0.0135)(a)   0.5492      (0.5627) (0.0065)        --         --     10.14      5.55
1993-
Administration
shares(d).......   10.23    0.2725        (0.0900)(a)   0.1825      (0.2725)     --          --         --     10.14      1.74
1992-Institu-
tional shares...   10.22    0.6703        (0.0600)(a)   0.6103      (0.6703)     --          --         --     10.16      6.24
1991-Institu-
tional shares...   10.00    0.8020         0.2200 (a)   1.0220      (0.8020)     --          --         --     10.22     10.93
1990-Institu-
tional shares...   10.07    0.8300        (0.0700)(a)   0.7600      (0.8300)     --          --         --     10.00      8.23
1989-Institu-
tional shares...   10.10    0.8800            --        0.8800      (0.8800)     --          --     (0.0300)   10.07      9.08
FOR THE PERIOD AUGUST 15, 1988 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1988-Institu-
tional Shares...   10.00    0.1800         0.1000       0.2800      (0.1800)     --          --         --     10.10      3.30
<CAPTION>
                                                                  RATIOS ASSUMING NO
                                                                  WAIVER OF FEES OR
                                                                  EXPENSE LIMITATION
                                                               ------------------------
                               RATIO OF                 NET
                                 NET                 ASSETS AT  RATIO OF   RATIO OF NET
                 RATIO OF NET INVESTMENT                END    EXPENSES TO  INVESTMENT
                 EXPENSES TO  INCOME TO  PORTFOLIO   OF PERIOD   AVERAGE    INCOME TO
                 AVERAGE NET   AVERAGE   TURNOVER       (IN        NET     AVERAGE NET
                    ASSETS    NET ASSETS  RATE(c)     000'S)     ASSETS       ASSETS
                 ------------ ---------- ----------- --------- ----------- ------------
<S>              <C>          <C>        <C>         <C>       <C>         <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
shares..........     0.45%       5.69%    289.79%    $193,095     0.59%        5.55%
1994-
Administration
shares..........     0.70        5.38     289.79          730     0.84         5.24
1993-Institu-
tional shares...     0.45        5.46     411.66      359,708     0.64         5.31
1993-
Administration
shares(d).......     0.70(e)     4.84(e)  411.66       16,490     0.80(e)      4.74(e)
1992-Institu-
tional shares...     0.45        6.60     216.07      277,927     0.69         6.36
1991-Institu-
tional shares...     0.45        8.25     155.44      158,848     0.79         7.91
1990-Institu-
tional shares...     0.45        8.62     173.21       68,995     0.95         8.12
1989-Institu-
tional shares...     0.46        8.71     137.37       31,015     1.39         7.78
FOR THE PERIOD AUGUST 15, 1988 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1988-Institu-
tional Shares...     0.55(e)     8.55(e)  167.00(e)    39,052     1.42(e)      7.68(e)
</TABLE>
- ----
(a) Includes balancing effect of calculating per share amounts.
(b) Assumes investment at the net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(c) Includes effect of mortgage dollar roll transactions.
(d) Administration share activity commenced on April 15, 1993.
(e) Annualized.
(f) Calculated based on the average shares outstanding methodology.
 
                                       7
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund seeks to achieve a high level of current income. Secondarily, the
Fund may, in seeking current income, also consider the potential for capital
gain. There can be no assurance that the objective of the Fund will be
realized.
 
  SELECTION OF PORTFOLIO INVESTMENTS. The Fund invests exclusively in (a)
securities issued or guaranteed as to principal and interest by the U.S.
Government, its agencies or instrumentalities ("U.S. Government securities")
deemed to have remaining maturities or (in the case of mortgage-related
securities) estimated average lives of six years or less and (b) repurchase
agreements collateralized by U.S. Government Securities. Under normal market
conditions, the Fund will invest at least 65% of its total assets in securities
issued by U.S. Government agencies or instrumentalities and in repurchase
agreements pertaining to U.S. Government securities. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities. The Fund may, for temporary defensive purposes, hold or
invest more than 35% of its total assets in cash, U.S. Treasury securities or
high quality money market instruments, including commercial paper, bankers'
acceptances, repurchase agreements or other debt obligations with a remaining
maturity of one year or less.
 
  PORTFOLIO DURATION. The Fund will maintain an option-adjusted duration of not
more than 3 years, however, its actual option-adjusted duration is expected to
be approximately 2 years under normal interest rate conditions. The Fund's
duration is a measure of the price sensitivity of the portfolio, including
expected cash flow and mortgage prepayments under a wide range of interest rate
scenarios. Maturity measures only the time until final payment is due on a bond
or other debt security; it takes no account of the pattern of a security's cash
flows over time, including how cash flow is affected by prepayments and by
changes in interest rates. In computing the duration of its portfolio, the Fund
will have to estimate the duration of obligations that are subject to
prepayment or redemption by the issuer taking into account the influence of
interest rates on prepayments and coupon flows. This method of computing
duration is known as option-adjusted duration. The Fund may use various
techniques to shorten or lengthen the option-adjusted duration of its
portfolio, including the acquisition of debt obligations at a premium or
discount, mortgage and interest rate swaps and interest rate floors, caps and
collars.
 
  OTHER INVESTMENT POLICIES. The Fund may also employ certain active management
techniques to hedge the interest rate risks associated with the Fund's
portfolio securities, to enhance its return and to seek to reduce fluctuation
in its net asset value. These techniques include, but are not limited to,
mortgage and interest rate swaps and interest rate floors, caps and collars.
The Fund may also employ other investment techniques to enhance returns, such
as loans of portfolio securities, mortgage dollar rolls, forward commitments
and repurchase agreements.
 
  When interest rates decline, the value of a portfolio invested in fixed-rate
debt securities can be expected to rise. Conversely, when interest rates rise,
the value of a portfolio invested in fixed-rate debt securities can be expected
to decline. In contrast, since interest rates on adjustable-rate mortgage loans
are reset periodically, yields of portfolio securities representing interests
in such loans will gradually align themselves to reflect changes in market
interest rates, causing the value of such adjustable-rate securities to
fluctuate less dramatically in response to interest rate fluctuations than
would fixed-rate debt securities. The Investment Adviser expects the Fund's net
asset value to be relatively stable during normal market conditions. This is
because the Fund will maintain a maximum option-adjusted duration of not more
than 3 years and will utilize certain interest rate hedging techniques.
However, a sudden and extreme increase
 
                                       8
<PAGE>
 
in prevailing interest rates may cause a decline in the Fund's net asset value.
Conversely, a sudden and extreme decline in interest rates could result in an
increase in the Fund's net asset value.
 
  The Fund's investment objective of seeking to achieve a high level of current
income and the policies specified under "Investment Restrictions" may only be
changed with the approval of the holders of a majority of the outstanding
shares of the Fund. All other policies described herein may be changed by a
vote of the Trustees. There can be no assurance that the Fund will be
successful in achieving its investment objective. An investment in shares of
the Fund does not constitute a complete investment program. Investors may wish
to complement an investment in the Fund with other types of investments.
 
                               INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Funds Management, L.P., an
affiliate of Goldman Sachs. The management services provided by the Investment
Adviser are subject to the general supervision of the Trust's Board of
Trustees. The Investment Adviser and its affiliates serve a wide range of
clients including private and public pension funds, endowments, foundations,
banks, thrifts, insurance companies, corporations, and private investors and
family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and market expertise
of Goldman Sachs, whose investment research effort is one of the largest in the
industry. The in-depth information and analyses generated by Goldman Sachs's
research analysts, economists and portfolio strategists are available to the
Investment Adviser.
 
                           SPECIAL INVESTMENT METHODS
 
U.S. GOVERNMENT SECURITIES
 
  U.S. Government securities include several different kinds of obligations.
Such securities include a variety of United States Treasury obligations,
including bills and notes, which principally differ only in their interest
rates, maturities and times of issuance, and obligations issued or guaranteed
by United States Government agencies or instrumentalities which are supported
by (a) the full faith and credit of the United States Treasury (such as
securities of the Government National Mortgage Association ("Ginnie Mae")), (b)
the authority of the United States Government to purchase certain obligations
of the issuer (such as securities of the Federal National Mortgage Association
("Fannie Mae") and the Federal Home Loan Mortgage Corporation ("Freddie Mac")),
(c) the limited authority of the issuer to borrow from the United States
Treasury (such as securities of the Student Loan Marketing Association) or (d)
only the credit of the issuer. No assurance can be given that the United States
Government will provide financial support to United States Government agencies
or instrumentalities described in clauses (b), (c) or (d) above in the future,
other than as set forth above, since it is not obligated to do so by law. U.S.
Government securities also include securities related to pools of mortgages as
discussed below.
 
                                       9
<PAGE>
 
CHARACTERISTICS OF MORTGAGE-BACKED SECURITIES
 
  Mortgage-Backed Securities are securities that directly or indirectly
represent participations in, or are collateralized by and payable from,
mortgage loans secured by real property. The investment characteristics of
adjustable and fixed rate Mortgage-Backed Securities differ from those of
traditional fixed income securities. The major differences include the payment
of interest and principal on Mortgage-Backed Securities on a more frequent
(usually monthly) schedule, and the possibility that principal may be prepaid
at any time due to prepayments on the underlying mortgage loans or other
assets. These differences can result in significantly greater price and yield
volatility than is the case with traditional fixed income securities. As a
result, if the Fund purchases Mortgage-Backed Securities at a premium, a faster
than expected prepayment rate will reduce both the market value and the yield
to maturity from those which were anticipated. A prepayment rate that is slower
than expected will have the opposite effect of increasing yield to maturity and
market value. Conversely, if the Fund purchases Mortgage-Backed Securities at a
discount, faster than expected prepayments will increase, while slower than
expected prepayments will reduce, yield to maturity and market value. The
Investment Adviser will seek to manage these potential risks and benefits by
investing in a variety of Mortgage-Backed Securities and by using certain
hedging techniques. See "Other Investments and Practices."
 
  Prepayments on a pool of mortgage loans are influenced by a variety of
factors, including economic conditions, changes in mortgagors' housing needs,
job transfers, unemployment, mortgagors' net equity in the mortgaged properties
and servicing decisions. The timing and level of prepayments cannot be
predicted. Generally, however, prepayments on adjustable rate mortgage loans
and fixed rate mortgage loans will increase during a period of falling mortgage
interest rates and decrease during a period of rising mortgage interest rates.
Accordingly, the amounts of prepayments available for reinvestment by the Fund
are likely to be greater during a period of declining mortgage interest rates.
If general interest rates also decline, such prepayments are likely to be
reinvested at lower interest rates than the Fund was earning on the Mortgage-
Backed Securities that were prepaid.
 
  GUARANTEED MORTGAGE-BACKED SECURITIES IN WHICH THE FUND INVESTS. All of the
Fund's investments in Mortgage-Backed Securities will be issued or guaranteed
by the U.S. Government or one of its agencies or instrumentalities, including
but not limited to, Ginnie Mae, Fannie Mae and Freddie Mac. Ginnie Mae
securities are backed by the full faith and credit of the U.S. Government,
which means that the U.S. Government guarantees that the interest and principal
will be paid when due. Fannie Mae securities and Freddie Mac securities are not
backed by the full faith and credit of the U.S. Government; however, the
ability of these agencies to borrow from the U.S. Treasury makes their
securities high quality securities with minimal credit risks. There are several
types of guaranteed Mortgage-Backed Securities currently available, including
guaranteed mortgage pass-through certificates and multiple-class securities,
which include guaranteed Real Estate Mortgage Investment Conduit ("REMIC")
pass-through certificates and stripped Mortgage Backed-Securities. The Fund
will be permitted to invest in other types of Mortgage-Backed Securities that
may be available in the future to the extent investment in such securities is
consistent with its investment objective and policies.
 
  MULTIPLE CLASS PASS-THROUGH SECURITIES AND COLLATERALIZED MORTGAGE
OBLIGATIONS. The Fund may invest in multiple class securities issued by U.S.
Government agencies and instrumentalities such as Fannie Mae or Freddie Mac,
including guaranteed collateralized mortgage obligations ("CMOs") and REMIC
pass-through or participation certificates. A REMIC is a CMO that qualifies for
special tax treatment under the Internal Revenue Code of 1986, as amended (the
"Code"), and invests in certain mortgages principally secured by interests in
real property and other permitted investments.
 
                                       10
<PAGE>
 
  CMOs and guaranteed REMIC pass-through certificates ("REMIC Certificates")
issued by Fannie Mae and Freddie Mac are types of multiple class pass-through
securities. Investors may purchase beneficial interests in REMICs, which are
known as "regular" interests or "residual" interests. The Fund does not intend
to purchase residual interests in CMOs or REMICs. The REMIC Certificates
represent beneficial ownership interests in a REMIC trust, generally consisting
of mortgage loans or Fannie Mae, Freddie Mac or Ginnie Mae guaranteed mortgage
pass-through certificates (the "Mortgage Assets"). The obligations of Fannie
Mae or Freddie Mac under their respective guaranty of the REMIC Certificates
are obligations solely of Fannie Mae or Freddie Mac, respectively.
 
  Fannie Mae REMIC Certificates are issued and guaranteed as to timely
distribution of principal and interest by Fannie Mae. In addition, Fannie Mae
will be obligated to distribute the principal balance of each class of REMIC
Certificates in full, whether or not sufficient funds are otherwise available.
 
  For Freddie Mac REMIC Certificates, Freddie Mac guarantees the timely payment
of interest, and also guarantees the payment of principal as payments are
required to be made on the underlying mortgage participation certificates
("PCs"). PCs represent undivided interests in specified level payment,
residential mortgages or participations therein purchased by Freddie Mac and
placed in a PC pool. With respect to principal payments on PCs, Freddie Mac
generally guarantees ultimate collection of all principal of the related
mortgage loans without offset or deduction. Freddie Mac also guarantees timely
payment of principal on certain PCs.
 
  CMOs and REMIC Certificates are issued in multiple classes. Each class of
CMOs and REMIC Certificates, often referred to as a "tranche," is issued at a
specific adjustable or fixed interest rate and must be fully retired no later
than its final scheduled distribution date. Principal prepayments on the
underlying mortgage loans or the Mortgage Assets underlying the CMOs or REMIC
Certificates may cause some or all of the classes of CMOs or REMIC Certificates
to be retired substantially earlier than their final distribution dates.
Generally, interest is paid or accrues on all classes of CMOs or REMIC
Certificates on a monthly basis.
 
  The principal of and interest on the Mortgage Assets may be allocated among
the several classes of CMOs or REMIC Certificates in various ways. In certain
structures (known as "sequential pay" CMOs or REMIC Certificates), payments of
principal, including any principal prepayments, on the Mortgage Assets
generally are applied to the classes of CMOs or REMIC Certificates in the order
of their respective final distribution dates. Thus, no payment of principal
will be made on any class of sequential pay CMOs or REMIC Certificates until
all other classes having an earlier final distribution date have been paid in
full.
 
  Additional structures of CMOs and REMIC Certificates include, among others,
"parallel pay" CMOs and REMIC Certificates. Parallel pay CMOs or REMIC
Certificates are those which are structured to apply principal payments and
prepayments of the Mortgage Assets to two or more classes concurrently on a
proportionate or disproportionate basis. These simultaneous payments are taken
into account in calculating the final distribution date of each class.
 
  A wide variety of REMIC Certificates may be issued in the parallel pay or
sequential pay structures. These securities include accrual certificates (also
known as "Z-Bonds"), which only accrue interest at a specified rate until all
other certificates having an earlier final distribution date have been retired
and are converted thereafter to an interest-paying security, and planned
amortization class ("PAC") certificates, which are parallel pay REMIC
Certificates which generally require that specified amounts of principal be
 
                                       11
<PAGE>
 
applied on each payment date to one or more classes of REMIC Certificates (the
"PAC Certificates"), even though all other principal payments and prepayments
of the Mortgage Assets are then required to be applied to one or more other
classes of the Certificates. The scheduled principal payments for the PAC
Certificates generally have the highest priority on each payment date after
interest due has been paid to all classes entitled to receive interest
currently. Shortfalls, if any, are added to the amount payable on the next
payment date. The PAC Certificate payment schedule is taken into account in
calculating the final distribution date of each class of PAC. In order to
create PAC tranches, one or more tranches generally must be created that absorb
most of the volatility in the underlying mortgage assets. These tranches tend
to have market prices and yields that are much more volatile than the PAC
classes.
 
  STRIPPED MORTGAGE-BACKED SECURITIES. The Fund may invest in stripped
mortgage-backed securities ("SMBS"), which are derivative multiple class
mortgage-backed securities. The Fund may only invest in SMBS issued or
guaranteed by the U.S. Government, its agencies or instrumentalities.
 
  SMBS are usually structured with two classes that receive different
proportions of the interest and principal distributions from a pool of Mortgage
Assets. A common type of SMBS will have one class receiving all of the interest
from the Mortgage Assets, while the other class will receive all of the
principal. However, in some instances, one class will receive some of the
interest and most of the principal while the other class will receive most of
the interest and the remainder of the principal. If the underlying Mortgage
Assets experience greater than anticipated prepayments of principal, the Fund
may fail to fully recoup its initial investment in these securities. Although
the market for such securities is increasingly liquid, certain SMBS may not be
readily marketable and will be considered illiquid for purposes of the Fund's
limitation on investments in illiquid securities. The market value of the class
consisting entirely of principal payments generally is unusually volatile in
response to changes in interest rates. The yields on a class of SMBS that
receives all or most of the interest from Mortgage Assets are generally higher
than prevailing market yields on other Mortgage-Backed Securities because their
cash flow patterns are more volatile and there is a greater risk that the
initial investment will not be fully recouped. The Investment Adviser will seek
to manage these risks (and potential benefits) by investing in a variety of
such securities and by using certain hedging techniques. See "Other Investments
and Practices."
 
ZERO COUPON BONDS
 
  The Fund may invest in zero coupon securities, zero coupon U.S. Treasury
securities (which are Treasury notes and bonds that have been stripped of their
unmatured interest coupons), the coupons themselves and receipts or
certificates representing interests in such stripped debt obligations. A zero
coupon security pays no interest to its holder during its life and its value
consists of the difference between its face value at maturity and its cost. The
market prices of zero coupon securities generally are more volatile than market
prices of securities that pay interest periodically and are likely to respond
to a greater degree to changes in interest rates than interest bearing
securities having similar maturities and credit qualities. The Fund's
investments in zero coupon securities or other stripped securities may require
the Fund to sell certain of its portfolio securities to generate sufficient
cash to satisfy certain income distribution requirements. See "Taxation" in the
Additional Statement.
 
                                       12
<PAGE>
 
                YIELD, MARKET VALUE AND RISK CONSIDERATIONS OF 
                          MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in certain Mortgage-Backed Securities, such as interest-
only and principal-only SMBS, that are extremely sensitive to changes in
prepayments and interest rates. Even though such securities have been issued or
guaranteed by an agency or instrumentality of the U.S. Government, under
certain interest rate or prepayment rate scenarios, the Fund may fail to fully
recover its investment in such securities.
 
  The investment characteristics of Mortgage-Backed Securities differ from
those of traditional fixed income securities. The major differences typically
include more frequent interest and principal payments, usually monthly, and the
possibility that unscheduled prepayments of principal may be made at any time.
Prepayment rates are influenced by changes in current interest rates and a
variety of economic, geographic, social and other factors and cannot be
predicted with certainty. Adjustable rate mortgage loans may be subject to a
greater prepayment rate in a declining interest rate environment. The yields to
maturity of the Mortgage-Backed Securities in which the Fund may invest will be
affected by the actual rate of payment (including prepayments) of principal of
the underlying mortgage loans. The mortgage loans underlying such securities
generally may be prepaid at any time without penalty. In a fluctuating interest
rate environment, a predominant factor affecting the prepayment rate on a pool
of mortgage loans is the difference between the interest rates on the mortgage
loans and prevailing mortgage loan interest rates (giving consideration to the
cost of any refinancing). In general, if interest rates on new mortgage loans
fall sufficiently below the interest rates on existing fixed rate mortgage
loans underlying mortgage pass-through securities, the rate of prepayment would
be expected to increase. Conversely, if mortgage loan interest rates rise above
the interest rates on the fixed rate mortgage loans underlying the mortgage
pass-through securities, the rate of prepayment may be expected to decrease.
 
  The rate of principal prepayments with respect to adjustable rate mortgages
has fluctuated in recent years. As is the case with fixed rate mortgage loans,
adjustable rate mortgages may be subject to a greater rate of principal
prepayments in a declining interest rate environment. For example, if
prevailing interest rates fall significantly, mortgages could be subject to
higher prepayment rates than if prevailing interest rates remain constant
because the availability of fixed rate mortgage loans at competitive interest
rates may encourage mortgagors to refinance their mortgages to "lock-in" a
lower fixed interest rate. Conversely, if prevailing interest rates rise
significantly, adjustable rate mortgages may prepay at lower rates than if
prevailing rates remain at or below those in effect at the time such mortgages
were originated due, for example, to the unavailability of lower rate
alternatives. There can be no certainty as to the rate of prepayments on the
mortgages in either stable or changing interest rate environments. In addition,
there can be no certainty as to whether increases in the principal balances of
adjustable rate mortgages due to the addition of deferred interest may result
in a default rate higher than that on mortgages that do not provide for
negative amortization. Other factors affecting prepayment of mortgages include
changes in mortgagors' housing needs, job transfers, unemployment, mortgagors'
net equity in the mortgage properties and servicing decisions.
 
  The Fund's reinvestment of principal payments and prepayments received on a
mortgage pass-through security may be made at rates higher or lower than the
rate payable on such security, thus affecting the return realized by the Fund.
In addition, the receipt of interest payments monthly rather than semi-annually
by the Fund has a compounding effect that may increase the yield to the Fund
relative to debt obligations that pay interest semi-annually. Due to these
factors, Mortgage-Backed Securities may also be less effective than U.S.
Treasury securities of similar maturity at maintaining yields during periods
 
                                       13
<PAGE>
 
of changing interest rates. Prepayments may have a disproportionate effect on
certain Mortgage-Backed Securities such as SMBS and certain other multiple
class pass-through securities. The Fund may purchase Mortgage-Backed Securities
at a premium or at a discount.
 
  RISKS ASSOCIATED WITH DERIVATIVE MORTGAGE-BACKED SECURITIES. Derivative
Mortgage-Backed Securities are subject to different combinations of interest
rate and/or prepayment risks. In addition, particular derivative securities may
be leveraged such that their exposure (i.e., price sensitivity) to interest
rate and/or prepayment risk is magnified. The Investment Adviser may use
derivative Mortgage-Backed Securities and other derivative securities
consistent with the Fund's investment objective for a variety of purposes
including adjusting the average duration or interest rate sensitivity of the
Fund's portfolio or attempting to enhance the Fund's total return. The
Investment Adviser manages the risks and benefits of derivative Mortgage-Backed
Securities and other derivative securities by prudent analysis, selection and
monitoring of such securities included in the Fund's portfolio.
 
  The risk of faster than anticipated prepayments generally adversely affects
interest-only securities (IOs), super floaters and premium priced Mortgage-
Backed Securities. The risk of slower than anticipated prepayments generally
adversely affects principal-only securities (POs), floating rate securities
subject to interest rate caps, support tranches and discount priced Mortgage-
Backed Securities.
 
  RISKS ASSOCIATED WITH OTHER DERIVATIVE FLOATING RATE SECURITIES. Other types
of floating rate derivative securities present more complex types of interest
rate risks. For example, range floaters are subject to the risk that the coupon
will be reduced to below market rates if a designated interest rate floats
outside of a specified interest rate band or collar. Dual index or yield curve
floaters are subject to lower prices in the event of an unfavorable change in
the spread between two designated interest rates.
 
                        OTHER INVESTMENTS AND PRACTICES
 
  INVERSE FLOATING RATE SECURITIES. The Fund may invest in leveraged inverse
floating rate debt instruments ("inverse floaters"). The interest rate on an
inverse floater resets in the opposite direction from the market rate of
interest to which the inverse floater is indexed. An inverse floater may be
considered to be leveraged to the extent that its interest rate varies by a
magnitude that exceeds the magnitude of the change in the index rate of
interest. The higher degree of leverage inherent in inverse floaters is
associated with the greater volatility in their market values. Accordingly, the
duration of an inverse floater may exceed its stated final maturity. Certain
inverse floaters may be deemed to be illiquid securities for purposes of the
Fund's 15% limitation on investments in such securities.
 
  INTEREST RATE SWAPS, MORTGAGE SWAPS, CAPS, FLOORS AND COLLARS. The Fund may
enter into interest rate swaps and mortgage swaps for hedging purposes and to
increase total return. The Fund may also enter into other types of interest
rate swap arrangements such as caps, floors and collars. Interest rate swaps
involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, e.g., an exchange of floating rate
payments for fixed rate payments. Mortgage swaps are similar to interest rate
swaps in that they represent commitments to pay and receive interest. The
notional principal amount, however, is tied to a reference pool or pools of
mortgages. The purchase of an interest rate cap entitles the purchaser, to the
extent that a specified index exceeds a predetermined interest rate, to receive
payment of interest on a notional principal amount from the party selling such
interest rate cap. The purchase of an interest rate floor entitles the
purchaser, to the extent that a specified index falls below a predetermined
interest rate, to receive payment of interest on a notional principal
 
                                       14
<PAGE>
 
amount from the party selling such interest rate floor. An interest rate collar
is the combination of a cap and a floor that preserves a certain return within
a predetermined range of interest rates. Since interest rate swaps, mortgage
swaps, caps, floors and collars are individually negotiated, the Fund expects
to achieve an acceptable degree of correlation between its portfolio
investments and its swap, cap, floor and collar positions entered into for
hedging purposes.
 
  The Fund will enter into interest rate swaps and mortgage swaps only on a net
basis, which means that the two payment streams are netted out, with the Fund
receiving or paying, as the case may be, only the net amount of the two
payments. Interest rate swaps and mortgage swaps do not involve the delivery of
securities, other underlying assets or principal. Accordingly, the risk of loss
with respect to interest rate swaps and mortgage swaps is limited to the net
amount of payments that the Fund is contractually obligated to make. If the
other party to an interest rate swap or mortgage swap defaults, the Fund's risk
of loss consists of the net amount of payments that the Fund is contractually
entitled to receive, if any. To the extent the net amount of an interest rate
swap or mortgage swap is held in a segregated account, consisting of cash and
liquid, high grade debt securities, the Fund and the Investment Adviser believe
that swaps do not constitute senior securities under the Investment Company Act
of 1940, as amended (the "Act") and, accordingly, will not treat them as being
subject to the Fund's borrowing restriction.
 
  The Fund will not enter into any interest rate swap, mortgage swap, or
interest rate cap, floor or collar transactions unless the unsecured commercial
paper, senior debt or claims paying ability of the other party is rated either
AA or A-1 or better by Standard & Poor's Ratings Group ("S&P") or Aa or P-1 or
better by Moody's Investors Service, Inc. ("Moody's"), or, if unrated by such
rating organizations, determined to be of comparable quality by the Investment
Adviser.
 
  The use of interest rate and mortgage swaps as well as interest rate caps,
floors and collars, is a highly specialized activity which involves investment
techniques and risks different from those associated with ordinary portfolio
securities transactions. If the Investment Adviser is incorrect in its
forecasts of market values and interest rates, the investment performance of
the Fund would be less favorable than it would have been if these investment
techniques were not used. The staff of the SEC considers interest rate swaps
and mortgage swaps, as well as interest rate floors and collars, to be illiquid
securities for purposes of the Fund's 15% limitation on illiquid investments.
 
  LENDING OF PORTFOLIO SECURITIES. The Fund may also seek to increase its
income by lending portfolio securities. Under present regulatory policies, such
loans may be made to institutions, such as broker-dealers, and are required to
be secured continuously by collateral in cash, cash equivalents or U.S.
Government securities maintained on a current basis in an amount at least equal
to the market value of the securities loaned. Cash collateral may be invested
in cash equivalents. If the Investment Adviser determines to make securities
loans, the value of the securities loaned may not exceed 33 1/3% of the value
of the total assets of the Fund. See "Investment Restrictions" in the
Additional Statement. The Fund may experience a loss or delay in the recovery
of its securities if the institution with which it has engaged in a portfolio
loan transaction breaches its agreement with the Fund.
 
  WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase
securities on a when-issued basis. When-issued transactions arise when
securities are purchased by the Fund with payment and delivery taking place in
the future in order to secure what is considered to be an advantageous price
and yield to the Fund at the time of entering into the transaction. The Fund
may also purchase securities on a forward commitment basis. In a forward
commitment transaction, the Fund
 
                                       15
<PAGE>
 
contracts to purchase securities for a fixed price at a future date beyond
customary settlement time. The Fund is required to hold and maintain in a
segregated account until the settlement date cash or liquid, high grade debt
obligations in an amount sufficient to meet the purchase price. Alternatively,
the Fund may enter into offsetting contracts for the forward sale of other
securities that it owns. The purchase of securities on a when-issued or forward
commitment basis involves a risk of loss if the value of the security to be
purchased declines prior to the settlement date. Although the Fund would
generally purchase securities on a when-issued or forward commitment basis with
the intention of actually acquiring securities for its portfolio, the Fund may
dispose of a when-issued security or forward commitment prior to settlement if
the Investment Adviser deems it appropriate to do so.
 
  MORTGAGE DOLLAR ROLLS. The Fund may enter into mortgage "dollar rolls" in
which the Fund sells securities for delivery in the current month and
simultaneously contracts with the same counterparty to repurchase similar (same
type, coupon and maturity), but not identical securities on a specified future
date. During the roll period, the Fund loses the right to receive principal and
interest paid on the securities sold. However, the Fund would benefit to the
extent of any difference between the price received for the securities sold and
the lower forward price for the future purchase (often referred to as the
"drop") or fee income plus the interest earned on the cash proceeds of the
securities sold until the settlement date of the forward purchase. Unless such
benefits exceed the income, capital appreciation and gain or loss due to
mortgage prepayments that would have been realized on the securities sold as
part of the mortgage dollar roll, the use of this technique will diminish the
investment performance of the Fund compared with what such performance would
have been without the use of mortgage dollar rolls. All cash proceeds will be
invested in instruments that are permissible investments for the Fund. The Fund
will hold and maintain in a segregated account until the settlement date cash
or liquid, high grade debt securities in an amount equal to the forward
purchase price.
 
  For financial reporting and tax purposes, the Fund treats mortgage dollar
rolls as two separate transactions; one involving the purchase of a security
and a separate transaction involving a sale. The Fund does not currently intend
to enter into mortgage dollar rolls that are accounted for as a financing.
 
  Mortgage dollar rolls involve certain risks including the following: if the
broker-dealer to whom the Fund sells the security becomes insolvent, the Fund's
right to purchase or repurchase the mortgage-related securities subject to the
mortgage dollar roll may be restricted and the instrument which the Fund is
required to repurchase may be worth less than an instrument which the Fund
originally held. Successful use of mortgage dollar rolls will depend upon the
Investment Adviser's ability to manage its interest rate and mortgage
prepayments exposure. For these reasons, there is no assurance that mortgage
dollar rolls can be successfully employed.
 
  REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with
dealers in U.S. Government securities and member banks of the Federal Reserve
System which furnish collateral at least equal in value or market price to the
amount of their repurchase obligation. In a repurchase agreement, the Fund
purchases a debt security from a seller which undertakes to repurchase the
security at a specified resale price on an agreed future date (ordinarily a
week or less). The resale price generally exceeds the purchase price by an
amount which reflects an agreed-upon market interest rate for the term of the
repurchase agreement. The primary risk is that, if the seller defaults, the
Fund might suffer a loss to the extent that the proceeds from the sale of the
underlying securities and other collateral held by the Fund in connection with
the related repurchase agreement are less than the repurchase price. Repurchase
agreements maturing in more than seven days are considered by the Fund to be
illiquid. In
 
                                       16
<PAGE>
 
addition, the Fund, together with other registered investment companies having
advisory agreements with the Investment Adviser or any of its affiliates, may
transfer uninvested cash balances into a single joint account, the daily
aggregate balance of which will be invested in one or more repurchase
agreements.
 
  ILLIQUID SECURITIES. The Fund will not invest more than 15% of its net assets
in securities which are illiquid, including securities that are not readily
marketable, repurchase agreements maturing in more than seven days, interest
rate and mortgage swaps, interest rate caps, floors and collars, certain SMBS
and securities that are restricted as to resale. However, a restricted security
is not considered to be illiquid if the Trustees of the Trust determine, based
upon the Investment Adviser's continuing review of the trading markets for the
specific restricted security, under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale under Rule 144A under the
Securities Act of 1933 is liquid. In addition, a repurchase agreement which by
its terms can be liquidated before its nominal fixed term on seven days or less
notice is regarded as a liquid instrument. Subject to the 15% limitation on
illiquid securities investments, the Fund may acquire U.S. Government
securities in a private placement.
 
  Since it is not possible to predict with assurance exactly how this market
for restricted securities sold and offered under Rule 144A will develop, the
Board of Trustees will carefully monitor the Fund's investments in these
securities, focusing on such important factors, among others, as valuation,
credit quality, liquidity and availability of information. This investment
practice could have the effect of increasing the level of illiquidity in the
Fund to the extent that qualified institutional buyers become for a time
uninterested in purchasing these restricted securities.
 
  OTHER INVESTMENT COMPANIES. The Fund reserves the right to invest up to 10%
of its total assets, calculated at the time of purchase, in the securities of
other investment companies, including business development companies and small
business investment companies. The Fund may not invest more than 5% of its
total assets in the securities of any one investment company or acquire more
than 3% of the voting securities of any other investment company. Pursuant to
an exemptive order obtained from the SEC, other investment companies in which
the Fund may invest include money market funds for which the Investment Adviser
or any of its affiliates serves as investment adviser. The Fund will indirectly
bear its proportionate share of any management fees and other expenses paid by
investment companies in which it invests in addition to the advisory fees paid
by the Fund. However, to the extent that the Fund invests in a money market
fund for which the Investment Adviser or any of its affiliates acts as adviser,
the advisory fees payable by the Fund to the Investment Adviser will be reduced
by an amount equal to the Fund's proportionate share of the advisory fees paid
by such money market fund to the Investment Adviser or any of its affiliates.
 
  INSTRUMENT MATURITY. The Mortgage-Backed Securities in which the Fund invests
will have an estimated average life, as determined by the Investment Adviser,
of six years or less. Average life estimates are based upon anticipated
prepayment patterns which, in turn, are based upon past prepayment patterns,
prevailing interest rates and other factors. Due to actual prepayment
experience, however, the remaining estimated average life of an investment
after purchase by the Fund may increase to more than six years or may decrease
at a rate faster than anticipated. The Fund's other securities generally will
have remaining maturities of 6 years or less and repurchase agreements will
have remaining maturities of less than one year.
 
                                       17
<PAGE>
 
  The Fund may purchase securities with variable or floating interest rates. In
calculating average portfolio duration or maturity, such securities will
generally be treated as having a maturity equal to the time remaining until
their interest rate is next reset, unless the Investment Adviser believes some
other treatment to be more appropriate, for example, because of the market
price impact of interest rate caps, floors and collars. In addition, the Fund
also may purchase securities that have demand or put features. In calculating
average portfolio duration or maturity, these securities generally will be
treated as having a maturity equal to the period remaining until the Fund can
obtain the principal amount through exercise of such feature.
 
  OTHER INFORMATION. The Investment Adviser seeks to enhance the Fund's income
by taking advantage of yield disparities or other factors (such as anticipated
changes in relative value which have not yet occurred) that occur or are
expected to occur in the securities markets. The Fund may dispose of any
security prior to its maturity if such disposition and reinvestment of the
proceeds are expected to enhance income consistent with the Investment
Adviser's judgment as to a desirable maturity structure or if such disposition
is believed to be advisable due to other circumstances or considerations.
 
                            INVESTMENT RESTRICTIONS
 
  The Fund is subject to certain investment restrictions which, as described in
more detail in the Additional Statement, are fundamental policies that cannot
be changed without the approval of a majority of the outstanding shares of the
Fund. Among other restrictions, as a diversified Fund, the Fund may not, with
respect to 75% of its total assets, purchase the securities of any one issuer
(except U.S. Government securities) if more than 5% of the value of the Fund's
assets would be invested in such issuer. The Fund has the authority to borrow
money but only (a) as a temporary measure, and then only in amounts not
exceeding 5% of the value of the Fund's net assets (excluding any amount
borrowed) or (b) from banks, provided that immediately after any such borrowing
all borrowings of the Fund do not exceed one-third of the Fund's net assets
(excluding any amount borrowed). The Fund does not intend to borrow for
investment leverage purposes but solely for extraordinary or emergency purposes
or to facilitate management of the Fund by enabling it to meet redemption
requests when the liquidation of portfolio instruments is deemed to be
disadvantageous or not possible. The Fund may not purchase securities while
such borrowings exceed 5% of the value of the Fund's total assets.
 
                               PORTFOLIO TURNOVER
 
  It is anticipated that the portfolio turnover rate of the Fund will vary from
year to year. The portfolio turnover rate is computed by dividing the lesser of
the amount of securities purchased or securities sold (excluding all securities
whose maturities at acquisition are one year or less) by the average monthly
value of such securities owned during the year. A 100% turnover rate would
occur, for example, if all of the securities held by the Fund were sold and
replaced within one year. The Investment Adviser will not consider the
portfolio turnover rate a limiting factor in making investment decisions for
the Fund consistent with the Fund's investment objective and portfolio
management policies. A higher rate of portfolio turnover results in increased
transaction costs to the Fund. The portfolio turnover rate includes the effect
of entering into mortgage dollar rolls.
 
                                       18
<PAGE>
 
                                   MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct and supervise the Fund's
daily business operations. The Additional Statement contains information as to
the identity of, and other information about, the Trustees and officers of the
Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Funds Management, L.P., One New York Plaza, New York, New York,
10004, a Delaware limited partnership which is an affiliate of Goldman Sachs,
acts as the investment adviser of the Fund. Goldman Sachs Funds Management,
L.P. was registered as an investment adviser in 1990. As of January 31, 1995,
the Investment Adviser, together with its affiliates, acted as investment
adviser, administrator or distributor for approximately $48.7 billion in
assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Funds
Management, L.P., subject to the general supervision of the Board of Trustees,
manages the Fund's portfolio and provides for the administration of all of the
Fund's other affairs. It is the responsibility of the Investment Adviser to
make investment decisions for the Fund and to place purchase and sale orders
for the Fund's portfolio transactions. Such orders may be directed to any
broker including, to the extent and in the manner permitted by applicable law,
Goldman Sachs or its affiliates. Goldman Sachs has agreed to permit the Fund to
use the name "Goldman Sachs" or a derivative thereof as part of the Fund's name
for as long as the Investment Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Jonathan A. Beinner and Theodore T. Sotir.
Mr. Beinner specializes in investing in a particular type of security the Fund
may hold. Mr. Sotir helps with overall portfolio strategy and is a member of
the Investment Adviser's risk control team. Mr. Beinner joined the Investment
Adviser in 1990 and is currently a Vice President, after working in the trading
and arbitrage group of Franklin Savings Association. Mr. Sotir joined the
Investment Adviser in 1993 and is currently a Vice President, after working as
a portfolio manager at Fidelity Management Trust Company. Prior to joining
Fidelity, Mr. Sotir worked for Goldman Sachs in the mortgage securities
department for six years.
 
  As compensation for the services rendered to the Fund by the Investment
Adviser pursuant to the Investment Advisory Agreement, and the assumption by
the Investment Adviser of the expenses related thereto, the Fund pays the
Investment Adviser a fee, computed daily and payable monthly, at an annual rate
equal to 0.50% of the Fund's average daily net assets. For the fiscal year
ended October 31, 1994, the Fund paid an advisory fee to the Investment Adviser
at the annual rate of 0.40% of the Fund's average daily net assets.
 
  The Investment Adviser has voluntarily agreed not to impose a portion of its
advisory fee (equal to 0.10% of the Fund's average daily net assets) and to
reduce or otherwise limit certain expenses of the Fund (excluding advisory
fees, payments to Service Organizations (as defined below), taxes, interest and
brokerage and litigation, indemnification and other extraordinary expenses) to
the extent such expenses exceed 0.05% annually of the Fund's average net
assets. Such reductions or limits, if any, are calculated monthly on a
cumulative basis and may be discontinued or modified by the Investment Adviser
at its
 
                                       19
<PAGE>
 
discretion at any time. The Investment Adviser has also agreed to reduce its
fees payable (to the extent of such fees) by the amount the Fund's expenses
would, absent the fee reduction, exceed the applicable expense limitations
imposed by state securities administrators. See "Management--Expenses" in the
Additional Statement.
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser, Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts and
other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities and instruments as
the Fund. Goldman Sachs and its affiliates will not have any obligation to make
available any information regarding their proprietary activities or strategies,
or the activities or strategies used for other accounts managed by them, for
the benefit of the management of the Fund and it is not anticipated that the
Investment Adviser will have access to proprietary information for the purpose
of managing the Fund. The results of the Fund's investment activities,
therefore, may differ from those of Goldman Sachs and its affiliates and it is
possible that the Fund could sustain losses during periods in which Goldman
Sachs and its affiliates and other accounts achieve significant profits on
their trading for proprietary or other accounts. From time to time, the Fund's
activities may be limited because of regulatory restrictions applicable to
Goldman Sachs and its affiliates, and/or their internal policies designed to
comply with such restrictions. See "Activities of Goldman Sachs and its
Affiliates and Other Accounts Managed by Goldman Sachs" in the Additional
Statement for further information.
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact Goldman
Sachs (as Transfer Agent) at the address or the telephone number set forth on
the cover page of this Prospectus.
 
                                   DIVIDENDS
 
  The Fund intends that all or substantially all of its net investment income
will be declared as a dividend on each day to shareholders of record as of 3:00
p.m. Chicago time on that day. Over the course of the fiscal year, dividends
accrued and paid will constitute all or substantially all of the Fund's net
investment income. From time to time a portion of such dividends may constitute
a return of capital. The Fund also intends that all net realized long-term and
short-term capital gains will be declared as a dividend at least annually. In
determining amounts of capital gains to be distributed, capital losses
including any available capital loss carryovers from prior years will be offset
against capital gains.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination is
made as of 3:00 p.m. Chicago time.
 
                                       20
<PAGE>
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case payment
will be made on the first Business Day of the succeeding month. Payment of
dividends with respect to capital gains, if any, when declared will be made in
additional shares of the Fund at the net asset value on the payment date,
unless cash distributions are elected. This election to receive dividends in
cash is initially made on the Account Information Form and may be changed upon
written notice to the Transfer Agent at any time prior to the record date for a
particular dividend or distribution. If cash dividends are elected with respect
to the Fund's monthly net investment income dividends then cash dividends must
also be elected with respect to the non-long term capital gains component, if
any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or unrealized appreciation of the Fund's portfolio securities. Therefore,
subsequent distributions (or portions thereof) on such shares may be taxable to
the investor even if the net asset value of the shares is, as a result of the
distributions, reduced below the cost of such shares and the distributions (or
portions thereof) represent a return of a portion of the purchase price.
 
                                NET ASSET VALUE
 
  The net asset value per share is calculated by the Fund's custodian as of the
close of regular trading on the New York Stock Exchange (normally 3:00 p.m.
Chicago time, 4:00 p.m. New York time), immediately after determination of the
income to be declared as a dividend on each Business Day (as such term is
defined under "Additional Information"). Net asset value per share of each
class is calculated by determining the net assets attributable to each class
and dividing by the number of outstanding shares of that class.
 
  Investments in U.S. Government Securities, including Mortgage-Backed
Securities, and other debt obligations are valued at fair value, based on yield
equivalents, a pricing matrix or other sources, under valuation procedures
established by the Trust's Board of Trustees. Other portfolio securities for
which accurate market quotations are readily available are valued on the basis
of quotations furnished by pricing services or provided by dealers in such
securities. Portfolio securities for which accurate market quotations are not
readily available are valued in accordance with the Trust's valuation
procedures. Debt obligations with a remaining maturity of 60 days or less are
valued at amortized cost. The Board of Trustees has determined that the
amortized cost of such securities approximates fair market value.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish yield and average annual total return
in advertisements and communications to shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
                                       21
<PAGE>
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most recent
calendar quarter, assuming reinvestment of all dividends and distributions at
net asset value. The total return calculation assumes a complete redemption of
the investment at the end of the relevant period. The Fund may also from time
to time advertise total return on an cumulative, average, year-by-year or other
basis for various specified periods by means of quotations, charts, graphs or
schedules. In addition to the above, the Fund may from time to time advertise
its performance relative to certain performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value for the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided in
shareholder reports, the Fund may, in its discretion, from time to time make a
list of the Fund's holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of shares in existence. Because each class of shares may be subject
to different expenses, the yield, total return and distribution rate
calculations with respect to each class of shares of the Fund for the same
period will differ. Due to the fees payable under the Service Plan and the
Administration Plan, the investment performance, for any period, of the
Institutional Shares will always be higher than that of the Service Shares and
the Administration Shares and the investment performance of the Administration
Shares will always be higher than that of the Service Shares. See "Shares of
the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement, the Trustees are
authorized to issue an unlimited number of shares of beneficial interest, $.001
par value per share. The Trustees of the Trust are responsible for the overall
management and supervision of its affairs. The Trustees of the Trust have
authority under the Trust Agreement to create and classify shares of beneficial
interest in separate series, without further action by shareholders. As of the
date of this Prospectus, the Trustees have authorized shares of the Fund and
ten other series. Additional series may be added in the future. The Trustees
also have authority to classify or reclassify any series or portfolio of shares
into one or more classes. Pursuant thereto, the Trustees have authorized the
issuance of three classes of shares of the Fund. These classes are:
Institutional Shares, Administration Shares and Service Shares. As of October
31, 1994, no Service Shares of the Fund were outstanding.
 
  Each Institutional Share, Administration Share and Service Share of the Fund
represents an equal proportionate interest in the assets belonging to the Fund.
All Fund expenses are based on a percentage of the Fund's aggregate average net
assets, except that the respective administration and service fees relating to
a particular class will be borne exclusively by that class. It is contemplated
that most Administration Shares and Service Shares will be held in accounts of
which the record owner is a bank or other institution acting, directly or
through an agent, as nominee for its customers who are the beneficial
 
                                       22
<PAGE>
 
owners of the shares or another organization designated by such bank or
institution. Administration Shares and Service Shares will each be marketed
only to such institutional investors, at net asset value with no sales load.
Institutional Shares may be purchased for accounts in the name of an investor
or institution that is not compensated by the Fund for services provided to the
institution's customers. Administration Shares may be purchased for accounts
held in the name of an institution that provides certain account administration
services to its customers, including maintenance of account records and
processing orders to purchase, redeem or exchange Administration Shares.
Administration Shares bear the cost of account administration fees at the
annual rate of up to 0.25% of the average daily net assets of such
Administration Shares. Service Shares may be purchased for accounts held in the
name of an institution that provides certain account administration and
shareholder liaison services to its customers, including maintenance of account
records and processing orders to purchase, redeem or exchange Service Shares,
responding to customer inquiries and assisting customers with investment
procedures. Service Shares bear the cost of service fees at the annual rate of
up to 0.50% of the average daily net assets of such Service Shares.
(Institutions that provide services to holders of Administration or Service
Shares are referred to in this Prospectus as "Service Organizations").
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration and Service Shares) to
its customers and thus receive different compensation with respect to different
classes of shares of the Fund. Administration Shares and Service Shares may
each have certain exclusive voting rights on matters relating to their
respective plans. Shares of each class may be exchanged only for shares of the
same class in another fund and certain money market funds sponsored by Goldman
Sachs. The Fund may amend such policy in the future. Dividends paid by the
Fund, if any, with respect to each class of shares will be calculated in the
same manner, at the same time on the same day and will be in the same amount,
except for differences caused by the fact that the respective fees under
Administration and Service Plans relating to a particular class will be borne
exclusively by that class. Similarly, the net asset value per share will vary
depending on the class of shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or conversion rights.
 
  Under Massachusetts law, there is a remote possibility that shareholders of a
business trust could, under certain circumstances, be held personally liable as
partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
  Unless otherwise required by the Act, ordinarily it will not be necessary for
the Trust to hold annual meetings of shareholders. As a result, shareholders
may not consider each year the election of Trustees or the appointment of
independent accountants. Shareholders may remove a Trustee by the affirmative
 
                                       23
<PAGE>
 
vote of at least two-thirds of the Trust's outstanding shares and the Trustees
must promptly call a meeting for such purpose when requested to do so in
writing by the recordholders of not less than 10% of the outstanding shares of
the Trust. Shareholders may, under certain circumstances, communicate with
other shareholders in connection with requesting a special meeting of
shareholders. The Board of Trustees, however, will call a special meeting for
the purpose of electing Trustees if, at any time, less than a majority of
Trustees holding office at the time were elected by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue share
certificates. Instead, the Transfer Agent maintains a record of each
shareholder's ownership. Each shareholder receives confirmation of purchase and
redemption orders from the Transfer Agent. Shares and any dividends and
distributions paid by the Fund are reflected in account statements from the
Transfer Agent.
 
                                    TAXATION
 
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code, and it intends to continue to qualify for such
treatment. To qualify for treatment as a regulated investment company, the Fund
must satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
  Dividends paid by the Fund from net investment income, the excess of net
short-term capital gain over net long-term capital loss and original issue
discount or certain market discount income will be taxable to shareholders as
ordinary income. Dividends paid by the Fund from the excess of net long-term
capital gain over net short-term capital loss will be taxable as long-term
capital gains regardless of how long the shareholders have held their shares.
These tax consequences will apply regardless of whether distributions are
received in cash or reinvested in shares. Certain distributions paid by the
Fund in January of a given year may be taxable to shareholders as if received
the prior December 31. Shareholders will be informed annually about the amount
and character of distributions received from the Fund for federal income tax
purposes.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
even though the distribution represents a return of a portion of the purchase
price.
 
  Redemptions and exchanges of shares are taxable events on which a shareholder
may recognize a gain or loss.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on distributions, redemptions and
exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other shareholders
that are not U.S. persons under the Code are subject to different tax rules and
may be subject to nonresident alien withholding at the rate of 30% (or a lower
rate provided by an applicable tax treaty) on amounts treated as ordinary
dividends from the Fund.
 
                                       24
<PAGE>
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local or
foreign taxes on payments received from the Fund. A state income (and possibly
local income and/or intangible property) tax exemption is generally available
to the extent the Fund's distributions are derived from interest on (or, in the
case of intangibles taxes, the value of its assets is attributable to) certain
U.S. Government obligations, provided in some states that certain thresholds
for holdings of such obligations and/or reporting requirements are satisfied.
 
  Shareholders should consult their own tax advisors regarding specific
questions as to United States federal, state, local and foreign tax
consequences of investing in the Fund in their particular circumstances. See
the Additional Statement for a further discussion of certain tax consequences
of investing in shares of the Fund.
 
                             ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at a meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days when
the Investment Adviser, The Northern Trust Company, State Street Bank and Trust
Company and the Federal Reserve Bank of New York are open for business, which
is Monday through Friday except for holidays. Such holidays currently are: New
Year's Day (observed), Martin Luther King Day, Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Columbus Day,
Thanksgiving Day and Christmas. On those days when one or more of such
organizations close early as a result of such day being a partial holiday or
otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                       25
<PAGE>
 
                              ADMINISTRATION PLAN
 
  The Trust, on behalf of the Fund, has adopted an Administration Plan with
respect to the Administration Shares which authorizes the Fund to compensate
Service Organizations for providing account administration services to their
customers who are beneficial owners of such Shares. The Trust, on behalf of the
Fund, will enter into agreements with Service Organizations which purchase
Administration Shares on behalf of their customers ("Service Agreements"). The
Service Agreements will provide for compensation to the Service Organizations
in an amount up to 0.25% (on an annualized basis) of the average daily net
assets of the Administration Shares of the Fund attributable to or held in the
name of the Service Organization for its customers. The services provided by
the Service Organizations may include acting, directly or through an agent, as
the sole shareholder of record, maintaining account records for customers and
processing orders to purchase, redeem or exchange Administration Shares for
customers.
 
  For the fiscal year ended October 31, 1994, the Trust, on behalf of the Fund,
paid the Service Organizations fees at an annual rate of 0.25% of the Fund's
average daily net assets attributable to Administration Shares.
 
  Holders of Administration Shares of the Fund will bear all expenses and fees
paid to Service Organizations with respect to such Shares as well as any other
expenses which are directly attributable to such Shares.
 
  Service Organizations (other than broker-dealers) may charge other fees to
their customers who are the beneficial owners of Administration Shares in
connection with their customer accounts. These fees would be in addition to any
amounts received by the Service Organization under a Service Agreement and may
affect the return earned on an investment in the Fund. The Trust, on behalf of
the Fund, will accrue payments made pursuant to a Service Agreement daily. All
inquiries of beneficial owners of Administration Shares should be directed to
such owners' Service Organization.
 
                            REPORTS TO SHAREHOLDERS
 
  Recordholders of Administration Shares of the Fund will receive an annual
report containing audited financial statements and a semi-annual report. Each
recordholder of Administration Shares will also be provided with a printed
confirmation for each transaction in its account and a monthly account
statement. A year-to-date statement for any account will be provided to a
Service Organization upon request made to Goldman Sachs.
 
  Service Organizations will be responsible for providing services similar to
those described above to their customers who are the beneficial owners of such
Shares. For example, Service Organizations are responsible for providing each
customer exercising investment discretion with monthly statements with respect
to such customer's account in lieu of an immediate confirmation of each
transaction.
 
                       PURCHASE OF ADMINISTRATION SHARES
 
  It is expected that all direct purchasers of Administration Shares of the
Fund will be Service Organizations or their nominees. Customers of Service
Organizations may invest in Administration Shares only through their Service
Organizations. Administration Shares of the Fund may be purchased by a Service
Organization through Goldman Sachs at the net asset value per share next
determined after
 
                                       26
<PAGE>
 
receipt from a Service Organization of an order without the imposition of a
sales load. If, by 3:00 p.m. Chicago time (4:00 p.m. New York time), an order,
a check or a Federal Reserve draft is received from a Service Organization by
Goldman Sachs, the price per share will be the net asset value per share
computed on the day the purchase order or such form of payment is received. See
"Net Asset Value."
 
PURCHASE PROCEDURES
 
  Purchases of Administration Shares by a Service Organization may be made by
placing an order with Goldman Sachs at 800-621-2550 and either wiring Federal
Funds to The Northern Trust Company ("Northern") as subcustodian for State
Street Bank and Trust Company ("State Street") on the next Business Day or
initiating an ACH transfer to ensure receipt by Northern on the next Business
Day. Purchases may also be made by a Service Organization by check (except that
a check drawn on a foreign bank will not be accepted) or Federal Reserve draft
made payable to "Goldman Sachs Trust--GS Short-Term Government Agency Fund" and
should be directed to Goldman Sachs Trust--GS Short-Term Government Agency
Fund, c/o GSAM Shareholder Services, 4900 Sears Tower, Chicago, Illinois 60606.
Payment of the proceeds of redemption of shares purchased by check may be
delayed for a period of time as described under "Redemption of Administration
Shares."
 
  The Service Organizations are responsible for the timely transmittal of
purchase orders to Goldman Sachs and payments to Northern or Goldman Sachs. In
order to facilitate timely transmittal, the Service Organizations have
established times by which purchase orders and payments must be received by
them.
 
OTHER PURCHASE INFORMATION
 
  The Fund does not have any minimum purchase or account requirements with
respect to Administration Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Administration Shares,
and may establish other requirements such as a minimum required account
balance. A Service Organization may effect redemptions of noncomplying
accounts, and may impose a charge for any special services rendered to its
customers. Customers should contact their Service Organization for further
information concerning such requirements and charges.
 
  The Fund reserves the right to redeem Administration Shares of any Service
Organization whose account balance is less than $100 as a result of earlier
redemptions. Such redemptions will not be implemented if the value of such
Shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days prior written
notice to Service Organizations whose Administration Shares are being redeemed
to allow them to purchase sufficient additional Administration Shares to avoid
such redemption.
 
PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is received
from a Service Organization by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and dividends will begin on such shares on the
next Business Day, provided that a Federal Funds wire or an ACH transfer is
received by Northern on such day.
 
 
                                       27
<PAGE>
 
PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a Service Organization's check
or Federal Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago
time, the purchased shares will be issued and dividends will begin on such
shares on the next Business Day after the Service Organization's check or
Federal Reserve draft is received by Goldman Sachs.
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges of
Administration Shares by a particular purchaser (or group of related
purchasers). The Fund or Goldman Sachs may reject or restrict purchases or
exchanges of Administration Shares by a particular purchaser or group, for
example, when a pattern of frequent purchases and sales or exchanges of
Administration Shares of the Fund is evident, or if the purchase, sale or
exchange orders are, or a subsequent abrupt redemption might be, of a size that
would disrupt management of the Fund.
 
                               EXCHANGE PRIVILEGE
 
  Administration Shares of the Fund may be exchanged by Service Organizations
for (i) Administration Shares of any other mutual fund sponsored by Goldman
Sachs and designated as an eligible fund for this purpose and (ii) the relevant
class of any portfolio of Goldman Sachs Money Market Trust at the net asset
value next determined either by writing to Goldman Sachs, Attention: Goldman
Sachs Trust--GS Short-Term Government Agency Fund, c/o GSAM Shareholder
Services, 4900 Sears Tower, Chicago, Illinois 60606 or if previously elected in
the Fund's Account Information Form, by telephone at 800-621-2550 (7:00 a.m. to
3:00 p.m. Chicago time). A shareholder should obtain and read the prospectus
relating to any other fund and its shares or units and consider its investment
objective, policies and applicable fees before making an exchange.
Administration Shares acquired by telephone exchange must be registered in the
same name(s) and have the same address as Administration Shares of the Fund for
which the exchange is being made.
 
  In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Administration Shares" to confirm
that such instructions are genuine. For federal income tax purposes, an
exchange is treated as a sale of the Administration Shares surrendered in the
exchange, on which an investor may realize a gain or loss, followed by a
purchase of Administration Shares or the relevant class of any portfolio of
Goldman Sachs Money Market Trust received in the exchange. Shareholders should
consult their own tax advisers concerning the tax consequences of an exchange.
Exchanges are available only in states where exchanges may legally be made. The
exchange privilege may be modified or withdrawn at any time on sixty (60) days'
written notice to the recordholders of Administration Shares and is subject to
certain limitations. See "Purchase of Administration Shares."
 
                      REDEMPTION OF ADMINISTRATION SHARES
 
  The Fund will redeem its Administration Shares upon request of the
recordholder of such Shares on any Business Day at the net asset value next
determined after the receipt by the Transfer Agent of such request in proper
form. See "Net Asset Value." If Administration Shares to be redeemed were
recently purchased by check, the Fund may delay transmittal of redemption
proceeds until such time as it has assured itself that good funds have been
collected for the purchase of such Administration Shares. This may take up to
fifteen (15) days. Redemption requests may be made by writing to or calling the
Transfer
 
                                       28
<PAGE>
 
Agent at the address or telephone number set forth on the cover page of this
Prospectus. A Service Organization may request redemptions by telephone if the
optional telephone redemption privilege is elected on the Account Information
Form. It may be difficult to implement redemptions by telephone in times of
drastic economic or market changes. In an effort to prevent unauthorized or
fraudulent redemption or exchange requests by telephone, Goldman Sachs employs
reasonable procedures specified by the Trust to confirm that such instructions
are genuine. Among other things, any redemption request that requires money to
go to an account or address other than that designated on the Account
Information Form must be in writing and signed by an authorized person
designated on the Account Information Form. Any such written request is also
confirmed by telephone with both the requesting party and the designated bank
account to verify instructions. Exchanges among accounts with different names,
addresses and social security or other taxpayer identification numbers must be
in writing and signed by an authorized person designated on the Account
Information Form. Other procedures may be implemented from time to time. If
reasonable procedures are not implemented, the Trust may be liable for any loss
due to unauthorized or fraudulent transactions. In all other cases, neither the
Fund, the Trust nor Goldman Sachs will be responsible for the authenticity of
redemption or exchange instructions received by telephone. If Goldman Sachs
receives a redemption request by 3:00 p.m. Chicago time, the Administration
Shares to be redeemed earn dividends with respect to the day the request is
received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired to the recordholder of Administration Shares. Redemption proceeds
will normally be wired on the next Business Day in Federal Funds (for a total
one-day delay), but may be paid up to seven (7) days after receipt of a
properly executed redemption request. Wiring of redemption proceeds may be
delayed one additional Business Day if the Federal Reserve Bank is closed on
the day redemption proceeds would ordinarily be wired. Once wire transfer
instructions have been given by Goldman Sachs, neither the Fund, the Trust nor
Goldman Sachs assumes any further responsibility for the performance of
intermediaries or the customer's Service Organization in the transfer process.
If a problem with such performance arises, the customer should deal directly
with such intermediaries or Service Organization.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by the Transfer Agent. The
request for such redemption will not be considered to have been received in
proper form until such additional documentation has been submitted to the
Transfer Agent by the recordholder of Administration Shares.
 
  Service Organizations are responsible for the timely transmittal of
redemption requests by their customers to the Transfer Agent. In order to
facilitate timely transmittal of redemption requests, Service Organizations
have established times by which redemption requests must be received by them.
Additional documentation may be required when deemed appropriate by a Service
Organization.
 
  Except with respect to Service Organizations whose account balances are less
than $100, Administration Shares of the Fund are not redeemable at the option
of the Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                       29
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                          PAGE
                          ----
<S>                       <C>
Summary.................    2
Financial Highlights....    7
Investment Objective and
 Policies...............    8
Investment Adviser......    9
Special Investment Meth-
 ods....................    9
Yield, Market Value and
 Risk Considerations of
 Mortgage-Backed Securi-
 ties...................   13
Other Investments and
 Practices..............   14
Investment Restrictions.   18
Portfolio Turnover......   18
Management..............   19
Dividends...............   20
Net Asset Value.........   21
Performance Information.   21
Shares of the Trust.....   22
Taxation................   24
Additional Information..   25
Administration Plan.....   26
Reports to Shareholders.   26
Purchase of Administra-
 tion Shares............   26
Exchange Privilege......   28
Redemption of Adminis-
 tration Shares.........   28
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                                 GS SHORT-TERM
                            GOVERNMENT AGENCY FUND
                             ADMINISTRATION SHARES
 
                                  MANAGED BY
                                  ----------

                              GOLDMAN SACHS FUNDS
 
                               MANAGEMENT, L.P.
                                AN AFFILIATE OF
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
            PROSPECTUS
                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                                 GS SHORT-TERM
                            GOVERNMENT AGENCY FUND
                                SERVICE SHARES
 
                                  MANAGED BY
                                  ----------
                     GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
                                AN AFFILIATE OF
                             GOLDMAN, SACHS & CO.
 
                                 -----------
 
  GS Short-Term Government Agency Fund (the "Fund") is one fund in a family of
funds advised by Goldman Sachs Funds Management, L.P. (the "Investment
Adviser") or its affiliates, Goldman Sachs Asset Management and Goldman Sachs
Asset Management International. The Fund is organized as a separate
diversified portfolio of Goldman Sachs Trust (the "Trust"), an open-end,
management investment company.
 
  The Fund's objective is to achieve a high level of current income.
Secondarily, the Fund may, in seeking current income, also consider the
potential for capital gain. The Fund pursues its objectives through investment
in securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities and repurchase agreements pertaining thereto. These
securities include mortgage pass-through securities and other securities
representing an interest in or collateralized by mortgages. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities.
 
  Goldman Sachs Funds Management, L.P., New York, New York, an affiliate of
Goldman, Sachs & Co., serves as the Fund's investment adviser. Goldman, Sachs
& Co. serves as the Fund's distributor and transfer agent. The Trust's
custodian is State Street Bank and Trust Company.
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Service Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from institutions ("Service Organizations") that hold,
directly or through an agent, Service Shares for the benefit of their
customers, or Goldman, Sachs & Co. by calling the telephone number, or writing
to one of the addresses, listed below.
 
SERVICE SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED
OR ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION, AND ARE NOT
INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE
BOARD OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN SERVICE SHARES OF THE
FUND INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
GOLDMAN SACHS TRUST                      GOLDMAN SACHS FUNDS MANAGEMENT, L.P.
4900 SEARS TOWER                         INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606                  ONE NEW YORK PLAZA
                                         NEW YORK, NEW YORK 10004
 
 
GOLDMAN, SACHS & CO.                     GOLDMAN, SACHS & CO.   
DISTRIBUTOR                              TRANSFER AGENT          
85 BROAD STREET                          4900 SEARS TOWER        
NEW YORK, NEW YORK 10004                 CHICAGO, ILLINOIS 60606  
                                                                  
TOLL FREE (IN U.S.)......................800-621-2550
 
                 The date of this Prospectus is March 1, 1995.
<PAGE>
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Short-Term Government Agency Fund (the "Fund") is one fund in a family of
funds advised by Goldman Sachs Funds Management, L.P. (the "Investment
Adviser") or its affiliates, Goldman Sachs Asset Management and Goldman Sachs
Asset Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company organized.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's objective is to achieve a high level of current income.
Secondarily, the Fund may, in seeking current income, also consider the
potential for capital gain. The Fund invests exclusively in (a) securities
issued or guaranteed as to principal and interest by the U.S. Government, its
agencies or instrumentalities ("U.S. Government securities") deemed to have
remaining maturities or (in the case of mortgage-related securities) estimated
average lives of 6 years or less, and (b) repurchase agreements pertaining
thereto. The Fund will invest under normal market conditions, at least 65% of
its total assets in securities issued by U.S. Government agencies or
instrumentalities and in repurchase agreements pertaining to U.S. Government
securities. The U.S. Government securities in which the Fund may invest include
mortgage-related securities. Under normal circumstances, substantially all of
the Fund's assets will be invested in securities issued or guaranteed by the
U.S. Government, its agencies or instrumentalities.
 
  The Fund may employ certain active management techniques to hedge the
interest rate risks associated with the Fund's portfolio securities, to enhance
its return and to seek to reduce fluctuation in its net asset value. These
include, but are not limited to, mortgage and interest rate swaps and interest
rate floors, caps and collars. The Fund may also utilize portfolio securities
lending, mortgage dollar rolls and repurchase agreements in an attempt to
enhance the return achieved by the Fund. See "Investment Objective and
Policies" and "Other Investments and Practices." There can be no assurance that
the Fund will achieve its investment objective.
 
  The Fund may, for temporary defensive purposes, hold or invest more than 35%
of its total assets in cash, U.S. Treasury securities or high quality money
market instruments, including commercial paper, bankers' acceptances,
repurchase agreements or other debt obligations with a remaining maturity of
one year or less. The Fund will maintain a dollar weighted average portfolio
maturity (as defined below) of 3 years or less.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Funds Management,
L.P., an affiliate of Goldman, Sachs & Co. ("Goldman Sachs"), serves as the
Fund's investment adviser. In this capacity, the Investment Adviser provides
investment advisory and administrative services and receives from the Fund a
monthly fee equal on an annual basis to 0.50% of the Fund's average daily net
assets. Goldman Sachs Funds Management, L.P. is registered with the Securities
and Exchange Commission (the "SEC") as an investment adviser. See "Investment
Adviser" and "Management--Investment Adviser."
 
                   PURCHASE AND REDEMPTION OF SERVICE SHARES
 
  It is expected that all purchasers of Service Shares of the Fund will be
Service Organizations or their nominees. Customers of Service Organizations may
invest in Service Shares only through their Service
 
                                       2
<PAGE>
 
Organizations. Service Shares of the Fund may be purchased by Service
Organizations through Goldman Sachs at the current net asset value per share
without the imposition of a sales load. The Fund does not have any minimum
purchase or account requirements with respect to Service Shares. A Service
Organization may, however, impose a minimum amount for initial and subsequent
investments in Service Shares, and may establish other requirements such as a
minimum account balance. See "Purchase of Service Shares." The Fund will redeem
its Service Shares upon request of a shareholder on any Business Day at the net
asset value next determined after receipt of such request in proper form. See
"'Redemption of Service Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
inquiries from Service Organizations. See "Management--Distributor and Transfer
Agent."
 
                                  RISK FACTORS
 
  INVESTMENT IN MORTGAGE-BACKED SECURITIES GENERALLY. The Fund's investments in
mortgage pass-through securities and other securities representing an interest
in or collateralized by adjustable-rate and fixed-rate mortgage loans
("Mortgage-Backed Securities") entail certain risks. These risks include the
failure of an issuer or guarantor to meet its obligations, adverse interest
rate changes, adverse economic, real estate or unemployment trends, failures in
connection with processing of transactions and the effects of prepayments on
mortgage cash flows. The Fund's policy of investing in securities issued by
U.S. Government agencies or instrumentalities is designed, however, to minimize
credit and performance related risks otherwise associated with Mortgage-Backed
Securities.
 
  The securities in the Fund's portfolio will tend to decrease in value when
interest rates rise and increase in value when interest rates fall. Because the
Fund's investments are interest rate sensitive, the Fund's performance will
depend in large part upon the ability of the Fund to respond to fluctuations in
market interest rates and to utilize appropriate strategies to maximize returns
to the Fund, while attempting to minimize the associated risks to its invested
capital. Operating results will also depend upon the availability of
opportunities for the investment of the Fund's assets, including purchases and
sales of suitable securities.
 
  YIELD CHARACTERISTICS AND MARKET RISKS. The yield characteristics of the
Mortgage-Backed Securities in which the Fund may invest differ from those of
traditional fixed-income securities. The major differences typically include
more frequent interest and principal payments (usually monthly) on Mortgage-
Backed Securities, and the adjustability of interest rates and the possibility
that prepayments of principal may be made at any time.
 
  Prepayment rates on Mortgage-Backed Securities are influenced by changes in
current interest rates and a variety of economic, geographic, social and other
factors and cannot be predicted with certainty.
 
                                       3
<PAGE>
 
Both adjustable rate mortgage loans and fixed rate mortgage loans may be
subject to a greater rate of principal prepayments in a declining interest rate
environment and to a lesser rate of principal prepayments in an increasing
interest rate environment. Under certain interest rate and prepayment rate
scenarios, the Fund may fail to recoup fully its investment in some of the
Mortgage-Backed Securities it holds notwithstanding a direct or indirect
governmental or agency guarantee. The Fund intends to use hedging techniques to
control this risk. See "Investment Objective and Policies" and "Other
Investments and Practices." When the Fund reinvests amounts representing
scheduled payments and unscheduled prepayments of principal, it may receive a
rate of interest that is lower than the rate on its existing portfolio of
mortgage pass-through securities. Thus, Mortgage-Backed Securities, and
adjustable rate mortgage pass-through securities in particular, may be less
effective than other types of U.S. Government securities as a mean of "locking
in" interest rates.
 
  OTHER INVESTMENTS AND PRACTICES. The Fund may invest in other instruments,
including direct obligations of the United States, and notes, bonds and
discount notes of U.S. Government agencies or instrumentalities. The Fund may
engage in certain other investment practices that also involve special risks.
These include, but are not limited to, the use of mortgage and interest rate
swaps and interest rate floors, caps and collars, making forward commitments,
lending portfolio securities, entering into mortgage dollar rolls and
repurchase agreements. See "Other Investments and Practices."
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, its divisions and
affiliates (including the Investment Adviser), partners and officers, in the
investment activities and business operations of the Fund may present certain
conflicts of interest, as described under "Management--Investment Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends that substantially all of its net investment income will be
declared as a dividend daily to shareholders of record as of 3:00 p.m. Chicago
time on that day and will be paid monthly. Over the course of the fiscal year,
dividends accrued and paid will constitute all or substantially all of the
Fund's net investment income. From time to time a portion of such dividends may
constitute a return of capital. The Fund also intends that any net realized
capital gains, if any, after offset by any available capital loss carryforwards
from prior taxable years, will be declared as a dividend at least annually.
Recordholders of Service Shares will receive dividends in additional Service
Shares of the Fund or may elect to receive cash as described under "Dividends."
 
                              ADDITIONAL SERVICES
 
  The Trust, on behalf of the Fund, has adopted a Service Plan with respect to
the Service Shares of the Fund which authorizes the Fund to compensate Service
Organizations for providing account administration and shareholder liaison
services to their customers who are the beneficial owners of such Shares. The
Trust, on behalf of the Fund, will enter into agreements with each Service
Organization which will provide for compensation to the Service Organization in
an amount up to 0.50% (on an annualized basis) of the average daily net assets
of the Service Shares of the Fund attributable to or held in the name of the
Service Organization for its customers. See "Additional Services."
 
                                       4
<PAGE>
 
 
                               FEES AND EXPENSES
                               (SERVICE SHARES)*
 
<TABLE>
<CAPTION>
                                                             GS SHORT-TERM
                                                         GOVERNMENT AGENCY FUND
                                                         ----------------------
<S>                                                      <C>
SHAREHOLDER TRANSACTION EXPENSES:
    Maximum Sales Load Imposed on Purchases.............          None
    Maximum Sales Load Imposed on Reinvested Dividends..          None
    Redemption Fees.....................................          None
    Exchange Fees.......................................          None
ANNUAL FUND OPERATING EXPENSES:
(AS A PERCENTAGE OF AVERAGE NET ASSETS)
    Management Fees (after waiver)......................          0.40%***
    Service Fees........................................          0.50%**
    Other Expenses (after expense limitation)...........          0.05%***
                                                                  ----
        TOTAL FUND OPERATING EXPENSES (AFTER EXPENSE
         LIMITATION)....................................          0.95%***
                                                                  ====
</TABLE>
 
EXAMPLE:
 
  You would pay the following expenses on a hypothetical $1,000 investment
assuming (1) a 5% annual return and (2) redemption at the end of each time
period:
 
<TABLE>
<CAPTION>

1 YEAR  3 YEARS  5 YEARS  10 YEARS
- ------  -------  -------  --------
<S>     <C>      <C>      <C>
$10       $30      $53      $117
</TABLE>

- --------
*  The information set forth in the foregoing table and hypothetical example
   relates only to Service Shares of the Fund. See "Shares of the Trust."
   Institutional Shares and Administration Shares of the Fund are subject to
   different fees and expenses. Institutional Shares are not subject to any
   administration or service fees. Administration Shares are subject to an
   administration fee of up to 0.25% of average daily net assets. All other
   expenses related to Institutional Shares and Administration Shares are the
   same as for Service Shares.
** Service Organizations (other than broker-dealers) may charge other fees to
   their customers who are beneficial owners of Service Shares in connection
   with their customer accounts. See "Additional Services."
***The Investment Adviser agreed that a portion of its advisory fee (0.10% on
   an annual basis) would not be imposed on the Fund and that it would reduce
   or limit certain "Other Expenses" of the Fund (excluding advisory fees,
   payments to Service Organizations, taxes, interest and brokerage and
   litigation, indemnification and other extraordinary expenses) to the extent
   such expenses exceeded 0.05% per annum of the Fund's average net assets. Had
   the reduction of the advisory fee and the expense limitation not been
   reflected in the above table, the management fees, other expenses and total
   operating expenses attributable to Service Shares of the Fund would have
   been 0.50%, 0.09% and 1.09%, respectively. The foregoing table and example
   also reflect current operating expenses that will be applicable on an
   ongoing basis. See "Management--Investment Adviser."
 
                                       5
<PAGE>
 
 
  The purpose of the foregoing table is to assist investors in understanding
the various costs and expenses of the Fund that an investor in the Fund will
bear directly or indirectly. The costs and expenses included in the table and
hypothetical example above, which are based on amounts that would have been
incurred for the fiscal year ended October 31, 1994 had Service Shares been
issued, should not be considered as representative of past or future expenses.
Actual fees and expenses may be greater or less than those indicated. Moreover
while the example assumes a 5% annual return, the Fund's actual performance
will vary and may result in an actual return greater or less than 5%. See
"Management" and "Additional Services." Investors should be aware that, due to
the service fees, a long-term shareholder in the Fund may pay over time more
than the economic equivalent of the maximum front end sales charge permitted
under the rules of the National Association of Securities Dealers, Inc.
 
                                       6
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
         SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  The following data with respect to Institutional Shares and Administration
Shares of the Fund outstanding during the periods indicated has been audited
by Arthur Andersen LLP, independent public accountants, as indicated in their
report incorporated by reference and attached to the Additional Statement from
the Fund's annual report to shareholders for the fiscal year ended October 31,
1994 (the "Annual Report"). This information should be read in conjunction
with the financial statements and related notes incorporated by reference and
attached to the Additional Statement. The Annual Report also contains
performance information and is available upon request and without charge by
writing to any of the addresses on the cover of this Prospectus.
 
<TABLE>
<CAPTION>
                                                                              DISTRIBUTIONS TO
                           INCOME FROM INVESTMENT OPERATIONS                    SHAREHOLDERS
                           -------------------------------------   ----------------------------------------
                                                                               IN
                                           NET          TOTAL                EXCESS       FROM                  NET
                 NET ASSET   NET       REALIZED AND     INCOME     FROM NET  OF NET   NET REALIZED             ASSET
                 VALUE AT  INVEST-      UNREALIZED       FROM      INVEST-   INVEST-    GAIN ON      FROM    VALUE AT
                 BEGINNING  MENT       GAIN (LOSS)    INVESTMENT     MENT     MENT     INVESTMENT  PAID-IN      END      TOTAL
                 OF PERIOD INCOME     ON INVESTMENTS  OPERATIONS    INCOME   INCOME   TRANSACTIONS CAPITAL   OF PERIOD RETURN(b)
                 --------- -------    --------------  ----------   --------  -------  ------------ --------  --------- ---------
<S>              <C>       <C>        <C>             <C>          <C>       <C>      <C>          <C>       <C>       <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
shares..........  $10.14   $0.5628(f)    $(0.4592)(f)  $0.1036(f)  $(0.5598)     --     $(0.0438)       --     $9.64      0.99%
1994-
Administration
shares..........   10.14    0.5329(f)     (0.4539)(f)   0.0790(f)   (0.5352)     --      (0.0438)       --      9.64      0.73
1993-Institu-
tional shares...   10.16    0.5627        (0.0135)(a)   0.5492      (0.5627) (0.0065)        --         --     10.14      5.55
1993-
Administration
shares(d).......   10.23    0.2725        (0.0900)(a)   0.1825      (0.2725)     --          --         --     10.14      1.74
1992-Institu-
tional shares...   10.22    0.6703        (0.0600)(a)   0.6103      (0.6703)     --          --         --     10.16      6.24
1991-Institu-
tional shares...   10.00    0.8020         0.2200 (a)   1.0220      (0.8020)     --          --         --     10.22     10.93
1990-Institu-
tional shares...   10.07    0.8300        (0.0700)(a)   0.7600      (0.8300)     --          --         --     10.00      8.23
1989-Institu-
tional shares...   10.10    0.8800            --        0.8800      (0.8800)     --          --     (0.0300)   10.07      9.08
FOR THE PERIOD AUGUST 15, 1988 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1988-Institu-
tional Shares...   10.00    0.1800         0.1000       0.2800      (0.1800)     --          --         --     10.10      3.30
<CAPTION>
                                                                  RATIOS ASSUMING NO
                                                                  WAIVER OF FEES OR
                                                                  EXPENSE LIMITATION
                                                               ------------------------
                               RATIO OF                 NET
                                 NET                 ASSETS AT  RATIO OF   RATIO OF NET
                 RATIO OF NET INVESTMENT                END    EXPENSES TO  INVESTMENT
                 EXPENSES TO  INCOME TO  PORTFOLIO   OF PERIOD   AVERAGE    INCOME TO
                 AVERAGE NET   AVERAGE   TURNOVER       (IN        NET     AVERAGE NET
                    ASSETS    NET ASSETS  RATE(c)     000'S)     ASSETS       ASSETS
                 ------------ ---------- ----------- --------- ----------- ------------
<S>              <C>          <C>        <C>         <C>       <C>         <C>
FOR THE YEARS ENDED OCTOBER 31,
1994-
Institutional
shares..........     0.45%       5.69%    289.79%    $193,095     0.59%        5.55%
1994-
Administration
shares..........     0.70        5.38     289.79          730     0.84         5.24
1993-Institu-
tional shares...     0.45        5.46     411.66      359,708     0.64         5.31
1993-
Administration
shares(d).......     0.70(e)     4.84(e)  411.66       16,490     0.80(e)      4.74(e)
1992-Institu-
tional shares...     0.45        6.60     216.07      277,927     0.69         6.36
1991-Institu-
tional shares...     0.45        8.25     155.44      158,848     0.79         7.91
1990-Institu-
tional shares...     0.45        8.62     173.21       68,995     0.95         8.12
1989-Institu-
tional shares...     0.46        8.71     137.37       31,015     1.39         7.78
FOR THE PERIOD AUGUST 15, 1988 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1988-Institu-
tional Shares...     0.55(e)     8.55(e)  167.00(e)    39,052     1.42(e)      7.68(e)
</TABLE>
- ----
(a) Includes balancing effect of calculating per share amounts.
(b) Assumes investment at the net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(c) Includes effect of mortgage dollar roll transactions.
(d) Administration share activity commenced on April 15, 1993.
(e) Annualized.
(f) Calculated based on the average shares outstanding methodology.
 
                                       7
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund seeks to achieve a high level of current income. Secondarily, the
Fund may, in seeking current income, also consider the potential for capital
gain. There can be no assurance that the objective of the Fund will be
realized.
 
  SELECTION OF PORTFOLIO INVESTMENTS. The Fund invests exclusively in (a)
securities issued or guaranteed as to principal and interest by the U.S.
Government, its agencies or instrumentalities ("U.S. Government securities")
deemed to have remaining maturities or (in the case of mortgage-related
securities) estimated average lives of six years or less and (b) repurchase
agreements collateralized by U.S. Government Securities. Under normal market
conditions, the Fund will invest at least 65% of its total assets in securities
issued by U.S. Government agencies or instrumentalities and in repurchase
agreements pertaining to U.S. Government securities. Under normal
circumstances, substantially all of the Fund's assets will be invested in
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities. The Fund may, for temporary defensive purposes, hold or
invest more than 35% of its total assets in cash, U.S. Treasury securities or
high quality money market instruments, including commercial paper, bankers'
acceptances, repurchase agreements or other debt obligations with a remaining
maturity of one year or less.
 
  PORTFOLIO DURATION. The Fund will maintain an option-adjusted duration of not
more than 3 years, however, its actual option-adjusted duration is expected to
be approximately 2 years under normal interest rate conditions. The Fund's
duration is a measure of the price sensitivity of the portfolio, including
expected cash flow and mortgage prepayments under a wide range of interest rate
scenarios. Maturity measures only the time until final payment is due on a bond
or other debt security; it takes no account of the pattern of a security's cash
flows over time, including how cash flow is affected by prepayments and by
changes in interest rates. In computing the duration of its portfolio, the Fund
will have to estimate the duration of obligations that are subject to
prepayment or redemption by the issuer taking into account the influence of
interest rates on prepayments and coupon flows. This method of computing
duration is known as option-adjusted duration. The Fund may use various
techniques to shorten or lengthen the option-adjusted duration of its
portfolio, including the acquisition of debt obligations at a premium or
discount, mortgage and interest rate swaps and interest rate floors, caps and
collars.
 
  OTHER INVESTMENT POLICIES. The Fund may also employ certain active management
techniques to hedge the interest rate risks associated with the Fund's
portfolio securities, to enhance its return and to seek to reduce fluctuation
in its net asset value. These techniques include, but are not limited to,
mortgage and interest rate swaps and interest rate floors, caps and collars.
The Fund may also employ other investment techniques to enhance returns, such
as loans of portfolio securities, mortgage dollar rolls, forward commitments
and repurchase agreements.
 
  When interest rates decline, the value of a portfolio invested in fixed-rate
debt securities can be expected to rise. Conversely, when interest rates rise,
the value of a portfolio invested in fixed-rate debt securities can be expected
to decline. In contrast, since interest rates on adjustable-rate mortgage loans
are reset periodically, yields of portfolio securities representing interests
in such loans will gradually align themselves to reflect changes in market
interest rates, causing the value of such adjustable-rate securities to
fluctuate less dramatically in response to interest rate fluctuations than
would fixed-rate debt securities. The Investment Adviser expects the Fund's net
asset value to be relatively stable during normal market conditions. This is
because the Fund will maintain a maximum option-adjusted duration of not more
than 3 years and will utilize certain interest rate hedging techniques.
However, a sudden and extreme increase
 
                                       8
<PAGE>
 
in prevailing interest rates may cause a decline in the Fund's net asset value.
Conversely, a sudden and extreme decline in interest rates could result in an
increase in the Fund's net asset value.
 
  The Fund's investment objective of seeking to achieve a high level of current
income and the policies specified under "Investment Restrictions" may only be
changed with the approval of the holders of a majority of the outstanding
shares of the Fund. All other policies described herein may be changed by a
vote of the Trustees. There can be no assurance that the Fund will be
successful in achieving its investment objective. An investment in shares of
the Fund does not constitute a complete investment program. Investors may wish
to complement an investment in the Fund with other types of investments.
 
                               INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Funds Management, L.P., an
affiliate of Goldman Sachs. The management services provided by the Investment
Adviser are subject to the general supervision of the Trust's Board of
Trustees. The Investment Adviser and its affiliates serve a wide range of
clients including private and public pension funds, endowments, foundations,
banks, thrifts, insurance companies, corporations, and private investors and
family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and market expertise
of Goldman Sachs, whose investment research effort is one of the largest in the
industry. The in-depth information and analyses generated by Goldman Sachs's
research analysts, economists and portfolio strategists are available to the
Investment Adviser.
 
                           SPECIAL INVESTMENT METHODS
 
U.S. GOVERNMENT SECURITIES
 
  U.S. Government securities include several different kinds of obligations.
Such securities include a variety of United States Treasury obligations,
including bills and notes, which principally differ only in their interest
rates, maturities and times of issuance, and obligations issued or guaranteed
by United States Government agencies or instrumentalities which are supported
by (a) the full faith and credit of the United States Treasury (such as
securities of the Government National Mortgage Association ("Ginnie Mae")), (b)
the authority of the United States Government to purchase certain obligations
of the issuer (such as securities of the Federal National Mortgage Association
("Fannie Mae") and the Federal Home Loan Mortgage Corporation ("Freddie Mac")),
(c) the limited authority of the issuer to borrow from the United States
Treasury (such as securities of the Student Loan Marketing Association) or (d)
only the credit of the issuer. No assurance can be given that the United States
Government will provide financial support to United States Government agencies
or instrumentalities described in clauses (b), (c) or (d) above in the future,
other than as set forth above, since it is not obligated to do so by law. U.S.
Government securities also include securities related to pools of mortgages as
discussed below.
 
                                       9
<PAGE>
 
CHARACTERISTICS OF MORTGAGE-BACKED SECURITIES
 
  Mortgage-Backed Securities are securities that directly or indirectly
represent participations in, or are collateralized by and payable from,
mortgage loans secured by real property. The investment characteristics of
adjustable and fixed rate Mortgage-Backed Securities differ from those of
traditional fixed income securities. The major differences include the payment
of interest and principal on Mortgage-Backed Securities on a more frequent
(usually monthly) schedule, and the possibility that principal may be prepaid
at any time due to prepayments on the underlying mortgage loans or other
assets. These differences can result in significantly greater price and yield
volatility than is the case with traditional fixed income securities. As a
result, if the Fund purchases Mortgage-Backed Securities at a premium, a faster
than expected prepayment rate will reduce both the market value and the yield
to maturity from those which were anticipated. A prepayment rate that is slower
than expected will have the opposite effect of increasing yield to maturity and
market value. Conversely, if the Fund purchases Mortgage-Backed Securities at a
discount, faster than expected prepayments will increase, while slower than
expected prepayments will reduce, yield to maturity and market value. The
Investment Adviser will seek to manage these potential risks and benefits by
investing in a variety of Mortgage-Backed Securities and by using certain
hedging techniques. See "Other Investments and Practices."
 
  Prepayments on a pool of mortgage loans are influenced by a variety of
factors, including economic conditions, changes in mortgagors' housing needs,
job transfers, unemployment, mortgagors' net equity in the mortgaged properties
and servicing decisions. The timing and level of prepayments cannot be
predicted. Generally, however, prepayments on adjustable rate mortgage loans
and fixed rate mortgage loans will increase during a period of falling mortgage
interest rates and decrease during a period of rising mortgage interest rates.
Accordingly, the amounts of prepayments available for reinvestment by the Fund
are likely to be greater during a period of declining mortgage interest rates.
If general interest rates also decline, such prepayments are likely to be
reinvested at lower interest rates than the Fund was earning on the Mortgage-
Backed Securities that were prepaid.
 
  GUARANTEED MORTGAGE-BACKED SECURITIES IN WHICH THE FUND INVESTS. All of the
Fund's investments in Mortgage-Backed Securities will be issued or guaranteed
by the U.S. Government or one of its agencies or instrumentalities, including
but not limited to, Ginnie Mae, Fannie Mae and Freddie Mac. Ginnie Mae
securities are backed by the full faith and credit of the U.S. Government,
which means that the U.S. Government guarantees that the interest and principal
will be paid when due. Fannie Mae securities and Freddie Mac securities are not
backed by the full faith and credit of the U.S. Government; however, the
ability of these agencies to borrow from the U.S. Treasury makes their
securities high quality securities with minimal credit risks. There are several
types of guaranteed Mortgage-Backed Securities currently available, including
guaranteed mortgage pass-through certificates and multiple-class securities,
which include guaranteed Real Estate Mortgage Investment Conduit ("REMIC")
pass-through certificates and stripped Mortgage Backed-Securities. The Fund
will be permitted to invest in other types of Mortgage-Backed Securities that
may be available in the future to the extent investment in such securities is
consistent with its investment objective and policies.
 
  MULTIPLE CLASS PASS-THROUGH SECURITIES AND COLLATERALIZED MORTGAGE
OBLIGATIONS. The Fund may invest in multiple class securities issued by U.S.
Government agencies and instrumentalities such as Fannie Mae or Freddie Mac,
including guaranteed collateralized mortgage obligations ("CMOs") and REMIC
pass-through or participation certificates. A REMIC is a CMO that qualifies for
special tax treatment under the Internal Revenue Code of 1986, as amended (the
"Code"), and invests in certain mortgages principally secured by interests in
real property and other permitted investments.
 
                                       10
<PAGE>
 
  CMOs and guaranteed REMIC pass-through certificates ("REMIC Certificates")
issued by Fannie Mae and Freddie Mac are types of multiple class pass-through
securities. Investors may purchase beneficial interests in REMICs, which are
known as "regular" interests or "residual" interests. The Fund does not intend
to purchase residual interests in CMOs or REMICs. The REMIC Certificates
represent beneficial ownership interests in a REMIC trust, generally consisting
of mortgage loans or Fannie Mae, Freddie Mac or Ginnie Mae guaranteed mortgage
pass-through certificates (the "Mortgage Assets"). The obligations of Fannie
Mae or Freddie Mac under their respective guaranty of the REMIC Certificates
are obligations solely of Fannie Mae or Freddie Mac, respectively.
 
  Fannie Mae REMIC Certificates are issued and guaranteed as to timely
distribution of principal and interest by Fannie Mae. In addition, Fannie Mae
will be obligated to distribute the principal balance of each class of REMIC
Certificates in full, whether or not sufficient funds are otherwise available.
 
  For Freddie Mac REMIC Certificates, Freddie Mac guarantees the timely payment
of interest, and also guarantees the payment of principal as payments are
required to be made on the underlying mortgage participation certificates
("PCs"). PCs represent undivided interests in specified level payment,
residential mortgages or participations therein purchased by Freddie Mac and
placed in a PC pool. With respect to principal payments on PCs, Freddie Mac
generally guarantees ultimate collection of all principal of the related
mortgage loans without offset or deduction. Freddie Mac also guarantees timely
payment of principal on certain PCs.
 
  CMOs and REMIC Certificates are issued in multiple classes. Each class of
CMOs and REMIC Certificates, often referred to as a "tranche," is issued at a
specific adjustable or fixed interest rate and must be fully retired no later
than its final scheduled distribution date. Principal prepayments on the
underlying mortgage loans or the Mortgage Assets underlying the CMOs or REMIC
Certificates may cause some or all of the classes of CMOs or REMIC Certificates
to be retired substantially earlier than their final distribution dates.
Generally, interest is paid or accrues on all classes of CMOs or REMIC
Certificates on a monthly basis.
 
  The principal of and interest on the Mortgage Assets may be allocated among
the several classes of CMOs or REMIC Certificates in various ways. In certain
structures (known as "sequential pay" CMOs or REMIC Certificates), payments of
principal, including any principal prepayments, on the Mortgage Assets
generally are applied to the classes of CMOs or REMIC Certificates in the order
of their respective final distribution dates. Thus, no payment of principal
will be made on any class of sequential pay CMOs or REMIC Certificates until
all other classes having an earlier final distribution date have been paid in
full.
 
  Additional structures of CMOs and REMIC Certificates include, among others,
"parallel pay" CMOs and REMIC Certificates. Parallel pay CMOs or REMIC
Certificates are those which are structured to apply principal payments and
prepayments of the Mortgage Assets to two or more classes concurrently on a
proportionate or disproportionate basis. These simultaneous payments are taken
into account in calculating the final distribution date of each class.
 
  A wide variety of REMIC Certificates may be issued in the parallel pay or
sequential pay structures. These securities include accrual certificates (also
known as "Z-Bonds"), which only accrue interest at a specified rate until all
other certificates having an earlier final distribution date have been retired
and are converted thereafter to an interest-paying security, and planned
amortization class ("PAC") certificates, which are parallel pay REMIC
Certificates which generally require that specified amounts of principal be
 
                                       11
<PAGE>
 
applied on each payment date to one or more classes of REMIC Certificates (the
"PAC Certificates"), even though all other principal payments and prepayments
of the Mortgage Assets are then required to be applied to one or more other
classes of the Certificates. The scheduled principal payments for the PAC
Certificates generally have the highest priority on each payment date after
interest due has been paid to all classes entitled to receive interest
currently. Shortfalls, if any, are added to the amount payable on the next
payment date. The PAC Certificate payment schedule is taken into account in
calculating the final distribution date of each class of PAC. In order to
create PAC tranches, one or more tranches generally must be created that absorb
most of the volatility in the underlying mortgage assets. These tranches tend
to have market prices and yields that are much more volatile than the PAC
classes.
 
  STRIPPED MORTGAGE-BACKED SECURITIES. The Fund may invest in stripped
mortgage-backed securities ("SMBS"), which are derivative multiple class
mortgage-backed securities. The Fund may only invest in SMBS issued or
guaranteed by the U.S. Government, its agencies or instrumentalities.
 
  SMBS are usually structured with two classes that receive different
proportions of the interest and principal distributions from a pool of Mortgage
Assets. A common type of SMBS will have one class receiving all of the interest
from the Mortgage Assets, while the other class will receive all of the
principal. However, in some instances, one class will receive some of the
interest and most of the principal while the other class will receive most of
the interest and the remainder of the principal. If the underlying Mortgage
Assets experience greater than anticipated prepayments of principal, the Fund
may fail to fully recoup its initial investment in these securities. Although
the market for such securities is increasingly liquid, certain SMBS may not be
readily marketable and will be considered illiquid for purposes of the Fund's
limitation on investments in illiquid securities. The market value of the class
consisting entirely of principal payments generally is unusually volatile in
response to changes in interest rates. The yields on a class of SMBS that
receives all or most of the interest from Mortgage Assets are generally higher
than prevailing market yields on other Mortgage-Backed Securities because their
cash flow patterns are more volatile and there is a greater risk that the
initial investment will not be fully recouped. The Investment Adviser will seek
to manage these risks (and potential benefits) by investing in a variety of
such securities and by using certain hedging techniques. See "Other Investments
and Practices."
 
ZERO COUPON BONDS
 
  The Fund may invest in zero coupon securities, zero coupon U.S. Treasury
securities (which are Treasury notes and bonds that have been stripped of their
unmatured interest coupons), the coupons themselves and receipts or
certificates representing interests in such stripped debt obligations. A zero
coupon security pays no interest to its holder during its life and its value
consists of the difference between its face value at maturity and its cost. The
market prices of zero coupon securities generally are more volatile than market
prices of securities that pay interest periodically and are likely to respond
to a greater degree to changes in interest rates than interest bearing
securities having similar maturities and credit qualities. The Fund's
investments in zero coupon securities or other stripped securities may require
the Fund to sell certain of its portfolio securities to generate sufficient
cash to satisfy certain income distribution requirements. See "Taxation" in the
Additional Statement.
 
                                       12
<PAGE>
 
                YIELD, MARKET VALUE AND RISK CONSIDERATIONS OF 
                          MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in certain Mortgage-Backed Securities, such as interest-
only and principal-only SMBS, that are extremely sensitive to changes in
prepayments and interest rates. Even though such securities have been issued or
guaranteed by an agency or instrumentality of the U.S. Government, under
certain interest rate or prepayment rate scenarios, the Fund may fail to fully
recover its investment in such securities.
 
  The investment characteristics of Mortgage-Backed Securities differ from
those of traditional fixed income securities. The major differences typically
include more frequent interest and principal payments, usually monthly, and the
possibility that unscheduled prepayments of principal may be made at any time.
Prepayment rates are influenced by changes in current interest rates and a
variety of economic, geographic, social and other factors and cannot be
predicted with certainty. Adjustable rate mortgage loans may be subject to a
greater prepayment rate in a declining interest rate environment. The yields to
maturity of the Mortgage-Backed Securities in which the Fund may invest will be
affected by the actual rate of payment (including prepayments) of principal of
the underlying mortgage loans. The mortgage loans underlying such securities
generally may be prepaid at any time without penalty. In a fluctuating interest
rate environment, a predominant factor affecting the prepayment rate on a pool
of mortgage loans is the difference between the interest rates on the mortgage
loans and prevailing mortgage loan interest rates (giving consideration to the
cost of any refinancing). In general, if interest rates on new mortgage loans
fall sufficiently below the interest rates on existing fixed rate mortgage
loans underlying mortgage pass-through securities, the rate of prepayment would
be expected to increase. Conversely, if mortgage loan interest rates rise above
the interest rates on the fixed rate mortgage loans underlying the mortgage
pass-through securities, the rate of prepayment may be expected to decrease.
 
  The rate of principal prepayments with respect to adjustable rate mortgages
has fluctuated in recent years. As is the case with fixed rate mortgage loans,
adjustable rate mortgages may be subject to a greater rate of principal
prepayments in a declining interest rate environment. For example, if
prevailing interest rates fall significantly, mortgages could be subject to
higher prepayment rates than if prevailing interest rates remain constant
because the availability of fixed rate mortgage loans at competitive interest
rates may encourage mortgagors to refinance their mortgages to "lock-in" a
lower fixed interest rate. Conversely, if prevailing interest rates rise
significantly, adjustable rate mortgages may prepay at lower rates than if
prevailing rates remain at or below those in effect at the time such mortgages
were originated due, for example, to the unavailability of lower rate
alternatives. There can be no certainty as to the rate of prepayments on the
mortgages in either stable or changing interest rate environments. In addition,
there can be no certainty as to whether increases in the principal balances of
adjustable rate mortgages due to the addition of deferred interest may result
in a default rate higher than that on mortgages that do not provide for
negative amortization. Other factors affecting prepayment of mortgages include
changes in mortgagors' housing needs, job transfers, unemployment, mortgagors'
net equity in the mortgage properties and servicing decisions.
 
  The Fund's reinvestment of principal payments and prepayments received on a
mortgage pass-through security may be made at rates higher or lower than the
rate payable on such security, thus affecting the return realized by the Fund.
In addition, the receipt of interest payments monthly rather than semi-annually
by the Fund has a compounding effect that may increase the yield to the Fund
relative to debt obligations that pay interest semi-annually. Due to these
factors, Mortgage-Backed Securities may also be less effective than U.S.
Treasury securities of similar maturity at maintaining yields during periods
 
                                       13
<PAGE>
 
of changing interest rates. Prepayments may have a disproportionate effect on
certain Mortgage-Backed Securities such as SMBS and certain other multiple
class pass-through securities. The Fund may purchase Mortgage-Backed Securities
at a premium or at a discount.
 
  RISKS ASSOCIATED WITH DERIVATIVE MORTGAGE-BACKED SECURITIES. Derivative
Mortgage-Backed Securities are subject to different combinations of interest
rate and/or prepayment risks. In addition, particular derivative securities may
be leveraged such that their exposure (i.e., price sensitivity) to interest
rate and/or prepayment risk is magnified. The Investment Adviser may use
derivative Mortgage-Backed Securities and other derivative securities
consistent with the Fund's investment objective for a variety of purposes
including adjusting the average duration or interest rate sensitivity of the
Fund's portfolio or attempting to enhance the Fund's total return. The
Investment Adviser manages the risks and benefits of derivative Mortgage-Backed
Securities and other derivative securities by prudent analysis, selection and
monitoring of such securities included in the Fund's portfolio.
 
  The risk of faster than anticipated prepayments generally adversely affects
interest-only securities (IOs), super floaters and premium priced Mortgage-
Backed Securities. The risk of slower than anticipated prepayments generally
adversely affects principal-only securities (POs), floating rate securities
subject to interest rate caps, support tranches and discount priced Mortgage-
Backed Securities.
 
  RISKS ASSOCIATED WITH OTHER DERIVATIVE FLOATING RATE SECURITIES. Other types
of floating rate derivative securities present more complex types of interest
rate risks. For example, range floaters are subject to the risk that the coupon
will be reduced to below market rates if a designated interest rate floats
outside of a specified interest rate band or collar. Dual index or yield curve
floaters are subject to lower prices in the event of an unfavorable change in
the spread between two designated interest rates.
 
                        OTHER INVESTMENTS AND PRACTICES
 
  INVERSE FLOATING RATE SECURITIES. The Fund may invest in leveraged inverse
floating rate debt instruments ("inverse floaters"). The interest rate on an
inverse floater resets in the opposite direction from the market rate of
interest to which the inverse floater is indexed. An inverse floater may be
considered to be leveraged to the extent that its interest rate varies by a
magnitude that exceeds the magnitude of the change in the index rate of
interest. The higher degree of leverage inherent in inverse floaters is
associated with the greater volatility in their market values. Accordingly, the
duration of an inverse floater may exceed its stated final maturity. Certain
inverse floaters may be deemed to be illiquid securities for purposes of the
Fund's 15% limitation on investments in such securities.
 
  INTEREST RATE SWAPS, MORTGAGE SWAPS, CAPS, FLOORS AND COLLARS. The Fund may
enter into interest rate swaps and mortgage swaps for hedging purposes and to
increase total return. The Fund may also enter into other types of interest
rate swap arrangements such as caps, floors and collars. Interest rate swaps
involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, e.g., an exchange of floating rate
payments for fixed rate payments. Mortgage swaps are similar to interest rate
swaps in that they represent commitments to pay and receive interest. The
notional principal amount, however, is tied to a reference pool or pools of
mortgages. The purchase of an interest rate cap entitles the purchaser, to the
extent that a specified index exceeds a predetermined interest rate, to receive
payment of interest on a notional principal amount from the party selling such
interest rate cap. The purchase of an interest rate floor entitles the
purchaser, to the extent that a specified index falls below a predetermined
interest rate, to receive payment of interest on a notional principal
 
                                       14
<PAGE>
 
amount from the party selling such interest rate floor. An interest rate collar
is the combination of a cap and a floor that preserves a certain return within
a predetermined range of interest rates. Since interest rate swaps, mortgage
swaps, caps, floors and collars are individually negotiated, the Fund expects
to achieve an acceptable degree of correlation between its portfolio
investments and its swap, cap, floor and collar positions entered into for
hedging purposes.
 
  The Fund will enter into interest rate swaps and mortgage swaps only on a net
basis, which means that the two payment streams are netted out, with the Fund
receiving or paying, as the case may be, only the net amount of the two
payments. Interest rate swaps and mortgage swaps do not involve the delivery of
securities, other underlying assets or principal. Accordingly, the risk of loss
with respect to interest rate swaps and mortgage swaps is limited to the net
amount of payments that the Fund is contractually obligated to make. If the
other party to an interest rate swap or mortgage swap defaults, the Fund's risk
of loss consists of the net amount of payments that the Fund is contractually
entitled to receive, if any. To the extent the net amount of an interest rate
swap or mortgage swap is held in a segregated account, consisting of cash and
liquid, high grade debt securities, the Fund and the Investment Adviser believe
that swaps do not constitute senior securities under the Investment Company Act
of 1940, as amended (the "Act") and, accordingly, will not treat them as being
subject to the Fund's borrowing restriction.
 
  The Fund will not enter into any interest rate swap, mortgage swap, or
interest rate cap, floor or collar transactions unless the unsecured commercial
paper, senior debt or claims paying ability of the other party is rated either
AA or A-1 or better by Standard & Poor's Ratings Group ("S&P") or Aa or P-1 or
better by Moody's Investors Service, Inc. ("Moody's"), or, if unrated by such
rating organizations, determined to be of comparable quality by the Investment
Adviser.
 
  The use of interest rate and mortgage swaps as well as interest rate caps,
floors and collars, is a highly specialized activity which involves investment
techniques and risks different from those associated with ordinary portfolio
securities transactions. If the Investment Adviser is incorrect in its
forecasts of market values and interest rates, the investment performance of
the Fund would be less favorable than it would have been if these investment
techniques were not used. The staff of the SEC considers interest rate swaps
and mortgage swaps, as well as interest rate floors and collars, to be illiquid
securities for purposes of the Fund's 15% limitation on illiquid investments.
 
  LENDING OF PORTFOLIO SECURITIES. The Fund may also seek to increase its
income by lending portfolio securities. Under present regulatory policies, such
loans may be made to institutions, such as broker-dealers, and are required to
be secured continuously by collateral in cash, cash equivalents or U.S.
Government securities maintained on a current basis in an amount at least equal
to the market value of the securities loaned. Cash collateral may be invested
in cash equivalents. If the Investment Adviser determines to make securities
loans, the value of the securities loaned may not exceed 33 1/3% of the value
of the total assets of the Fund. See "Investment Restrictions" in the
Additional Statement. The Fund may experience a loss or delay in the recovery
of its securities if the institution with which it has engaged in a portfolio
loan transaction breaches its agreement with the Fund.
 
  WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase
securities on a when-issued basis. When-issued transactions arise when
securities are purchased by the Fund with payment and delivery taking place in
the future in order to secure what is considered to be an advantageous price
and yield to the Fund at the time of entering into the transaction. The Fund
may also purchase securities on a forward commitment basis. In a forward
commitment transaction, the Fund
 
                                       15
<PAGE>
 
contracts to purchase securities for a fixed price at a future date beyond
customary settlement time. The Fund is required to hold and maintain in a
segregated account until the settlement date cash or liquid, high grade debt
obligations in an amount sufficient to meet the purchase price. Alternatively,
the Fund may enter into offsetting contracts for the forward sale of other
securities that it owns. The purchase of securities on a when-issued or forward
commitment basis involves a risk of loss if the value of the security to be
purchased declines prior to the settlement date. Although the Fund would
generally purchase securities on a when-issued or forward commitment basis with
the intention of actually acquiring securities for its portfolio, the Fund may
dispose of a when-issued security or forward commitment prior to settlement if
the Investment Adviser deems it appropriate to do so.
 
  MORTGAGE DOLLAR ROLLS. The Fund may enter into mortgage "dollar rolls" in
which the Fund sells securities for delivery in the current month and
simultaneously contracts with the same counterparty to repurchase similar (same
type, coupon and maturity), but not identical securities on a specified future
date. During the roll period, the Fund loses the right to receive principal and
interest paid on the securities sold. However, the Fund would benefit to the
extent of any difference between the price received for the securities sold and
the lower forward price for the future purchase (often referred to as the
"drop") or fee income plus the interest earned on the cash proceeds of the
securities sold until the settlement date of the forward purchase. Unless such
benefits exceed the income, capital appreciation and gain or loss due to
mortgage prepayments that would have been realized on the securities sold as
part of the mortgage dollar roll, the use of this technique will diminish the
investment performance of the Fund compared with what such performance would
have been without the use of mortgage dollar rolls. All cash proceeds will be
invested in instruments that are permissible investments for the Fund. The Fund
will hold and maintain in a segregated account until the settlement date cash
or liquid, high grade debt securities in an amount equal to the forward
purchase price.
 
  For financial reporting and tax purposes, the Fund treats mortgage dollar
rolls as two separate transactions; one involving the purchase of a security
and a separate transaction involving a sale. The Fund does not currently intend
to enter into mortgage dollar rolls that are accounted for as a financing.
 
  Mortgage dollar rolls involve certain risks including the following: if the
broker-dealer to whom the Fund sells the security becomes insolvent, the Fund's
right to purchase or repurchase the mortgage-related securities subject to the
mortgage dollar roll may be restricted and the instrument which the Fund is
required to repurchase may be worth less than an instrument which the Fund
originally held. Successful use of mortgage dollar rolls will depend upon the
Investment Adviser's ability to manage its interest rate and mortgage
prepayments exposure. For these reasons, there is no assurance that mortgage
dollar rolls can be successfully employed.
 
  REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with
dealers in U.S. Government securities and member banks of the Federal Reserve
System which furnish collateral at least equal in value or market price to the
amount of their repurchase obligation. In a repurchase agreement, the Fund
purchases a debt security from a seller which undertakes to repurchase the
security at a specified resale price on an agreed future date (ordinarily a
week or less). The resale price generally exceeds the purchase price by an
amount which reflects an agreed-upon market interest rate for the term of the
repurchase agreement. The primary risk is that, if the seller defaults, the
Fund might suffer a loss to the extent that the proceeds from the sale of the
underlying securities and other collateral held by the Fund in connection with
the related repurchase agreement are less than the repurchase price. Repurchase
agreements maturing in more than seven days are considered by the Fund to be
illiquid. In
 
                                       16
<PAGE>
 
addition, the Fund, together with other registered investment companies having
advisory agreements with the Investment Adviser or any of its affiliates, may
transfer uninvested cash balances into a single joint account, the daily
aggregate balance of which will be invested in one or more repurchase
agreements.
 
  ILLIQUID SECURITIES. The Fund will not invest more than 15% of its net assets
in securities which are illiquid, including securities that are not readily
marketable, repurchase agreements maturing in more than seven days, interest
rate and mortgage swaps, interest rate caps, floors and collars, certain SMBS
and securities that are restricted as to resale. However, a restricted security
is not considered to be illiquid if the Trustees of the Trust determine, based
upon the Investment Adviser's continuing review of the trading markets for the
specific restricted security, under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale under Rule 144A under the
Securities Act of 1933 is liquid. In addition, a repurchase agreement which by
its terms can be liquidated before its nominal fixed term on seven days or less
notice is regarded as a liquid instrument. Subject to the 15% limitation on
illiquid securities investments, the Fund may acquire U.S. Government
securities in a private placement.
 
  Since it is not possible to predict with assurance exactly how this market
for restricted securities sold and offered under Rule 144A will develop, the
Board of Trustees will carefully monitor the Fund's investments in these
securities, focusing on such important factors, among others, as valuation,
credit quality, liquidity and availability of information. This investment
practice could have the effect of increasing the level of illiquidity in the
Fund to the extent that qualified institutional buyers become for a time
uninterested in purchasing these restricted securities.
 
  OTHER INVESTMENT COMPANIES. The Fund reserves the right to invest up to 10%
of its total assets, calculated at the time of purchase, in the securities of
other investment companies, including business development companies and small
business investment companies. The Fund may not invest more than 5% of its
total assets in the securities of any one investment company or acquire more
than 3% of the voting securities of any other investment company. Pursuant to
an exemptive order obtained from the SEC, other investment companies in which
the Fund may invest include money market funds for which the Investment Adviser
or any of its affiliates serves as investment adviser. The Fund will indirectly
bear its proportionate share of any management fees and other expenses paid by
investment companies in which it invests in addition to the advisory fees paid
by the Fund. However, to the extent that the Fund invests in a money market
fund for which the Investment Adviser or any of its affiliates acts as adviser,
the advisory fees payable by the Fund to the Investment Adviser will be reduced
by an amount equal to the Fund's proportionate share of the advisory fees paid
by such money market fund to the Investment Adviser or any of its affiliates.
 
  INSTRUMENT MATURITY. The Mortgage-Backed Securities in which the Fund invests
will have an estimated average life, as determined by the Investment Adviser,
of six years or less. Average life estimates are based upon anticipated
prepayment patterns which, in turn, are based upon past prepayment patterns,
prevailing interest rates and other factors. Due to actual prepayment
experience, however, the remaining estimated average life of an investment
after purchase by the Fund may increase to more than six years or may decrease
at a rate faster than anticipated. The Fund's other securities generally will
have remaining maturities of 6 years or less and repurchase agreements will
have remaining maturities of less than one year.
 
                                       17
<PAGE>
 
  The Fund may purchase securities with variable or floating interest rates. In
calculating average portfolio duration or maturity, such securities will
generally be treated as having a maturity equal to the time remaining until
their interest rate is next reset, unless the Investment Adviser believes some
other treatment to be more appropriate, for example, because of the market
price impact of interest rate caps, floors and collars. In addition, the Fund
also may purchase securities that have demand or put features. In calculating
average portfolio duration or maturity, these securities generally will be
treated as having a maturity equal to the period remaining until the Fund can
obtain the principal amount through exercise of such feature.
 
  OTHER INFORMATION. The Investment Adviser seeks to enhance the Fund's income
by taking advantage of yield disparities or other factors (such as anticipated
changes in relative value which have not yet occurred) that occur or are
expected to occur in the securities markets. The Fund may dispose of any
security prior to its maturity if such disposition and reinvestment of the
proceeds are expected to enhance income consistent with the Investment
Adviser's judgment as to a desirable maturity structure or if such disposition
is believed to be advisable due to other circumstances or considerations.
 
                            INVESTMENT RESTRICTIONS
 
  The Fund is subject to certain investment restrictions which, as described in
more detail in the Additional Statement, are fundamental policies that cannot
be changed without the approval of a majority of the outstanding shares of the
Fund. Among other restrictions, as a diversified Fund, the Fund may not, with
respect to 75% of its total assets, purchase the securities of any one issuer
(except U.S. Government securities) if more than 5% of the value of the Fund's
assets would be invested in such issuer. The Fund has the authority to borrow
money but only (a) as a temporary measure, and then only in amounts not
exceeding 5% of the value of the Fund's net assets (excluding any amount
borrowed) or (b) from banks, provided that immediately after any such borrowing
all borrowings of the Fund do not exceed one-third of the Fund's net assets
(excluding any amount borrowed). The Fund does not intend to borrow for
investment leverage purposes but solely for extraordinary or emergency purposes
or to facilitate management of the Fund by enabling it to meet redemption
requests when the liquidation of portfolio instruments is deemed to be
disadvantageous or not possible. The Fund may not purchase securities while
such borrowings exceed 5% of the value of the Fund's total assets.
 
                               PORTFOLIO TURNOVER
 
  It is anticipated that the portfolio turnover rate of the Fund will vary from
year to year. The portfolio turnover rate is computed by dividing the lesser of
the amount of securities purchased or securities sold (excluding all securities
whose maturities at acquisition are one year or less) by the average monthly
value of such securities owned during the year. A 100% turnover rate would
occur, for example, if all of the securities held by the Fund were sold and
replaced within one year. The Investment Adviser will not consider the
portfolio turnover rate a limiting factor in making investment decisions for
the Fund consistent with the Fund's investment objective and portfolio
management policies. A higher rate of portfolio turnover results in increased
transaction costs to the Fund. The portfolio turnover rate includes the effect
of entering into mortgage dollar rolls.
 
                                       18
<PAGE>
 
                                   MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct and supervise the Fund's
daily business operations. The Additional Statement contains information as to
the identity of, and other information about, the Trustees and officers of the
Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Funds Management, L.P., One New York Plaza, New York, New York,
10004, a Delaware limited partnership which is an affiliate of Goldman Sachs,
acts as the investment adviser of the Fund. Goldman Sachs Funds Management,
L.P. was registered as an investment adviser in 1990. As of January 31, 1995,
the Investment Adviser, together with its affiliates, acted as investment
adviser, administrator or distributor for approximately $48.7 billion in
assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Funds
Management, L.P., subject to the general supervision of the Board of Trustees,
manages the Fund's portfolio and provides for the administration of all of the
Fund's other affairs. It is the responsibility of the Investment Adviser to
make investment decisions for the Fund and to place purchase and sale orders
for the Fund's portfolio transactions. Such orders may be directed to any
broker including, to the extent and in the manner permitted by applicable law,
Goldman Sachs or its affiliates. Goldman Sachs has agreed to permit the Fund to
use the name "Goldman Sachs" or a derivative thereof as part of the Fund's name
for as long as the Investment Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Jonathan A. Beinner and Theodore T. Sotir.
Mr. Beinner specializes in investing in a particular type of security the Fund
may hold. Mr. Sotir helps with overall portfolio strategy and is a member of
the Investment Adviser's risk control team. Mr. Beinner joined the Investment
Adviser in 1990 and is currently a Vice President, after working in the trading
and arbitrage group of Franklin Savings Association. Mr. Sotir joined the
Investment Adviser in 1993 and is currently a Vice President, after working as
a portfolio manager at Fidelity Management Trust Company. Prior to joining
Fidelity, Mr. Sotir worked for Goldman Sachs in the mortgage securities
department for six years.
 
  As compensation for the services rendered to the Fund by the Investment
Adviser pursuant to the Investment Advisory Agreement, and the assumption by
the Investment Adviser of the expenses related thereto, the Fund pays the
Investment Adviser a fee, computed daily and payable monthly, at an annual rate
equal to 0.50% of the Fund's average daily net assets. For the fiscal year
ended October 31, 1994, the Fund paid an advisory fee to the Investment Adviser
at the annual rate of 0.40% of the Fund's average daily net assets.
 
  The Investment Adviser has voluntarily agreed not to impose a portion of its
advisory fee (equal to 0.10% of the Fund's average daily net assets) and to
reduce or otherwise limit certain expenses of the Fund (excluding advisory
fees, payments to Service Organizations (as defined below), taxes, interest and
brokerage and litigation, indemnification and other extraordinary expenses) to
the extent such expenses exceed 0.05% annually of the Fund's average net
assets. Such reductions or limits, if any, are calculated monthly on a
cumulative basis and may be discontinued or modified by the Investment Adviser
at its
 
                                       19
<PAGE>
 
discretion at any time. The Investment Adviser has also agreed to reduce its
fees payable (to the extent of such fees) by the amount the Fund's expenses
would, absent the fee reduction, exceed the applicable expense limitations
imposed by state securities administrators. See "Management--Expenses" in the
Additional Statement.
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser, Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts and
other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities and instruments as
the Fund. Goldman Sachs and its affiliates will not have any obligation to make
available any information regarding their proprietary activities or strategies,
or the activities or strategies used for other accounts managed by them, for
the benefit of the management of the Fund and it is not anticipated that the
Investment Adviser will have access to proprietary information for the purpose
of managing the Fund. The results of the Fund's investment activities,
therefore, may differ from those of Goldman Sachs and its affiliates and it is
possible that the Fund could sustain losses during periods in which Goldman
Sachs and its affiliates and other accounts achieve significant profits on
their trading for proprietary or other accounts. From time to time, the Fund's
activities may be limited because of regulatory restrictions applicable to
Goldman Sachs and its affiliates, and/or their internal policies designed to
comply with such restrictions. See "Activities of Goldman Sachs and its
Affiliates and Other Accounts Managed by Goldman Sachs" in the Additional
Statement for further information.
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact Goldman
Sachs (as Transfer Agent) at the address or the telephone number set forth on
the cover page of this Prospectus.
 
                                   DIVIDENDS
 
  The Fund intends that all or substantially all of its net investment income
will be declared as a dividend on each day to shareholders of record as of 3:00
p.m. Chicago time on that day. Over the course of the fiscal year, dividends
accrued and paid will constitute all or substantially all of the Fund's net
investment income. From time to time a portion of such dividends may constitute
a return of capital. The Fund also intends that all net realized long-term and
short-term capital gains will be declared as a dividend at least annually. In
determining amounts of capital gains to be distributed, capital losses
including any available capital loss carryovers from prior years will be offset
against capital gains.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination is
made as of 3:00 p.m. Chicago time.
 
                                       20
<PAGE>
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case payment
will be made on the first Business Day of the succeeding month. Payment of
dividends with respect to capital gains, if any, when declared will be made in
additional shares of the Fund at the net asset value on the payment date,
unless cash distributions are elected. This election to receive dividends in
cash is initially made on the Account Information Form and may be changed upon
written notice to the Transfer Agent at any time prior to the record date for a
particular dividend or distribution. If cash dividends are elected with respect
to the Fund's monthly net investment income dividends then cash dividends must
also be elected with respect to the non-long term capital gains component, if
any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or unrealized appreciation of the Fund's portfolio securities. Therefore,
subsequent distributions (or portions thereof) on such shares may be taxable to
the investor even if the net asset value of the shares is, as a result of the
distributions, reduced below the cost of such shares and the distributions (or
portions thereof) represent a return of a portion of the purchase price.
 
                                NET ASSET VALUE
 
  The net asset value per share is calculated by the Fund's custodian as of the
close of regular trading on the New York Stock Exchange (normally 3:00 p.m.
Chicago time, 4:00 p.m. New York time), immediately after determination of the
income to be declared as a dividend on each Business Day (as such term is
defined under "Additional Information"). Net asset value per share of each
class is calculated by determining the net assets attributable to each class
and dividing by the number of outstanding shares of that class.
 
  Investments in U.S. Government Securities, including Mortgage-Backed
Securities, and other debt obligations are valued at fair value, based on yield
equivalents, a pricing matrix or other sources, under valuation procedures
established by the Trust's Board of Trustees. Other portfolio securities for
which accurate market quotations are readily available are valued on the basis
of quotations furnished by pricing services or provided by dealers in such
securities. Portfolio securities for which accurate market quotations are not
readily available are valued in accordance with the Trust's valuation
procedures. Debt obligations with a remaining maturity of 60 days or less are
valued at amortized cost. The Board of Trustees has determined that the
amortized cost of such securities approximates fair market value.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish yield and average annual total return
in advertisements and communications to shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
                                       21
<PAGE>
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most recent
calendar quarter, assuming reinvestment of all dividends and distributions at
net asset value. The total return calculation assumes a complete redemption of
the investment at the end of the relevant period. The Fund may also from time
to time advertise total return on an cumulative, average, year-by-year or other
basis for various specified periods by means of quotations, charts, graphs or
schedules. In addition to the above, the Fund may from time to time advertise
its performance relative to certain performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value for the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided in
shareholder reports, the Fund may, in its discretion, from time to time make a
list of the Fund's holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of shares in existence. Because each class of shares may be subject
to different expenses, the yield, total return and distribution rate
calculations with respect to each class of shares of the Fund for the same
period will differ. Due to the fees payable under the Service Plan and the
Administration Plan, the investment performance, for any period, of the
Institutional Shares will always be higher than that of the Service Shares and
the Administration Shares and the investment performance of the Administration
Shares will always be higher than that of the Service Shares. See "Shares of
the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement, the Trustees are
authorized to issue an unlimited number of shares of beneficial interest, $.001
par value per share. The Trustees of the Trust are responsible for the overall
management and supervision of its affairs. The Trustees of the Trust have
authority under the Trust Agreement to create and classify shares of beneficial
interest in separate series, without further action by shareholders. As of the
date of this Prospectus, the Trustees have authorized shares of the Fund and
ten other series. Additional series may be added in the future. The Trustees
also have authority to classify or reclassify any series or portfolio of shares
into one or more classes. Pursuant thereto, the Trustees have authorized the
issuance of three classes of shares of the Fund. These classes are:
Institutional Shares, Administration Shares and Service Shares. As of October
31, 1994, no Service Shares of the Fund were outstanding.
 
  Each Institutional Share, Administration Share and Service Share of the Fund
represents an equal proportionate interest in the assets belonging to the Fund.
All Fund expenses are based on a percentage of the Fund's aggregate average net
assets, except that the respective administration and service fees relating to
a particular class will be borne exclusively by that class. It is contemplated
that most Administration Shares and Service Shares will be held in accounts of
which the record owner is a bank or other institution acting, directly or
through an agent, as nominee for its customers who are the beneficial
 
                                       22
<PAGE>
 
owners of the shares or another organization designated by such bank or
institution. Administration Shares and Service Shares will each be marketed
only to such institutional investors, at net asset value with no sales load.
Institutional Shares may be purchased for accounts in the name of an investor
or institution that is not compensated by the Fund for services provided to the
institution's customers. Administration Shares may be purchased for accounts
held in the name of an institution that provides certain account administration
services to its customers, including maintenance of account records and
processing orders to purchase, redeem or exchange Administration Shares.
Administration Shares bear the cost of account administration fees at the
annual rate of up to 0.25% of the average daily net assets of such
Administration Shares. Service Shares may be purchased for accounts held in the
name of an institution that provides certain account administration and
shareholder liaison services to its customers, including maintenance of account
records and processing orders to purchase, redeem or exchange Service Shares,
responding to customer inquiries and assisting customers with investment
procedures. Service Shares bear the cost of service fees at the annual rate of
up to 0.50% of the average daily net assets of such Service Shares.
(Institutions that provide services to holders of Administration or Service
Shares are referred to in this Prospectus as "Service Organizations").
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration and Service Shares) to
its customers and thus receive different compensation with respect to different
classes of shares of the Fund. Administration Shares and Service Shares may
each have certain exclusive voting rights on matters relating to their
respective plans. Shares of each class may be exchanged only for shares of the
same class in another fund and certain money market funds sponsored by Goldman
Sachs. The Fund may amend such policy in the future. Dividends paid by the
Fund, if any, with respect to each class of shares will be calculated in the
same manner, at the same time on the same day and will be in the same amount,
except for differences caused by the fact that the respective fees under
Administration and Service Plans relating to a particular class will be borne
exclusively by that class. Similarly, the net asset value per share will vary
depending on the class of shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or conversion rights.
 
  Under Massachusetts law, there is a remote possibility that shareholders of a
business trust could, under certain circumstances, be held personally liable as
partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
  Unless otherwise required by the Act, ordinarily it will not be necessary for
the Trust to hold annual meetings of shareholders. As a result, shareholders
may not consider each year the election of Trustees or the appointment of
independent accountants. Shareholders may remove a Trustee by the affirmative
 
                                       23
<PAGE>
 
vote of at least two-thirds of the Trust's outstanding shares and the Trustees
must promptly call a meeting for such purpose when requested to do so in
writing by the recordholders of not less than 10% of the outstanding shares of
the Trust. Shareholders may, under certain circumstances, communicate with
other shareholders in connection with requesting a special meeting of
shareholders. The Board of Trustees, however, will call a special meeting for
the purpose of electing Trustees if, at any time, less than a majority of
Trustees holding office at the time were elected by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue share
certificates. Instead, the Transfer Agent maintains a record of each
shareholder's ownership. Each shareholder receives confirmation of purchase and
redemption orders from the Transfer Agent. Shares and any dividends and
distributions paid by the Fund are reflected in account statements from the
Transfer Agent.
 
                                    TAXATION
 
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code, and it intends to continue to qualify for such
treatment. To qualify for treatment as a regulated investment company, the Fund
must satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
  Dividends paid by the Fund from net investment income, the excess of net
short-term capital gain over net long-term capital loss and original issue
discount or certain market discount income will be taxable to shareholders as
ordinary income. Dividends paid by the Fund from the excess of net long-term
capital gain over net short-term capital loss will be taxable as long-term
capital gains regardless of how long the shareholders have held their shares.
These tax consequences will apply regardless of whether distributions are
received in cash or reinvested in shares. Certain distributions paid by the
Fund in January of a given year may be taxable to shareholders as if received
the prior December 31. Shareholders will be informed annually about the amount
and character of distributions received from the Fund for federal income tax
purposes.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
even though the distribution represents a return of a portion of the purchase
price.
 
  Redemptions and exchanges of shares are taxable events on which a shareholder
may recognize a gain or loss.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on distributions, redemptions and
exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other shareholders
that are not U.S. persons under the Code are subject to different tax rules and
may be subject to nonresident alien withholding at the rate of 30% (or a lower
rate provided by an applicable tax treaty) on amounts treated as ordinary
dividends from the Fund.
 
                                       24
<PAGE>
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local or
foreign taxes on payments received from the Fund. A state income (and possibly
local income and/or intangible property) tax exemption is generally available
to the extent the Fund's distributions are derived from interest on (or, in the
case of intangibles taxes, the value of its assets is attributable to) certain
U.S. Government obligations, provided in some states that certain thresholds
for holdings of such obligations and/or reporting requirements are satisfied.
 
  Shareholders should consult their own tax advisors regarding specific
questions as to United States federal, state, local and foreign tax
consequences of investing in the Fund in their particular circumstances. See
the Additional Statement for a further discussion of certain tax consequences
of investing in shares of the Fund.
 
                             ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at a meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days when
the Investment Adviser, The Northern Trust Company, State Street Bank and Trust
Company and the Federal Reserve Bank of New York are open for business, which
is Monday through Friday except for holidays. Such holidays currently are: New
Year's Day (observed), Martin Luther King Day, Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Columbus Day,
Thanksgiving Day and Christmas. On those days when one or more of such
organizations close early as a result of such day being a partial holiday or
otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                       25
<PAGE>
 
                              ADDITIONAL SERVICES
 
  The Trust, on behalf of the Fund, has adopted a Service Plan with respect to
the Service Shares which authorizes the Fund to compensate Service
Organizations for providing account administration and personal and account
maintenance services to their customers who are beneficial owners of such
Shares. The Trust, on behalf of the Fund, will enter into agreements with
Service Organizations which purchase Service Shares on behalf of their
customers ("Service Agreements"). The Service Agreements will provide for
compensation to the Service Organizations in an amount up to 0.50% (on an
annualized basis) of the average daily net assets of the Service Shares of the
Fund attributable to or held in the name of the Service Organization for its
customers; provided, however, that the fee paid for personal and account
maintenance services shall not exceed 0.25% of such average daily net assets.
The services provided by the Service Organizations may include acting, directly
or through an agent, as the sole shareholder of record, maintaining account
records for customers, processing orders to purchase, redeem or exchange
Service Shares for customers, responding to inquiries from prospective and
existing shareholders and assisting customers with investment procedures.
 
  Had Service Shares been outstanding during the fiscal year ended October 31,
1994, the Trust, on behalf of the Fund, would have paid the Service
Organizations fees at the annual rate of 0.50% of the Fund's average daily net
assets attributable to Service Shares.
 
  Holders of Service Shares of the Fund will bear all expenses and fees paid to
Service Organizations for their services with respect to such Shares as well as
any other expenses which are directly attributable to such Shares.
 
  Service Organizations (other than broker-dealers) may charge other fees to
their customers who are the beneficial owners of Service Shares in connection
with their customer accounts. These fees would be in addition to any amounts
received by the Service Organization under a Service Agreement and may affect
the return earned on an investment in the Fund. The Trust, on behalf of the
Fund, will accrue payments made pursuant to a Service Agreement daily. All
inquiries of beneficial owners of Service Shares should be directed to such
owners' Service Organization.
 
                            REPORTS TO SHAREHOLDERS
 
  Recordholders of Service Shares of the Fund will receive an annual report
containing audited financial statements and a semi-annual report. Each
recordholder of Service Shares will also be provided with a printed
confirmation for each transaction in its account and a monthly account
statement. A year-to-date statement for any account will be provided to a
Service Organization upon request made to Goldman Sachs.
 
  Service Organizations will be responsible for providing services similar to
those described above to their customers who are beneficial owners of such
Shares. For example, Service Organizations are responsible for providing each
customer exercising investment discretion with monthly statements with respect
to such customer's account in lieu of an immediate confirmation of each
transaction.
 
                           PURCHASE OF SERVICE SHARES
 
  It is expected that all direct purchasers of Service Shares of the Fund will
be Service Organizations or their nominees. Customers of Service Organizations
may invest in Service Shares only through their Service Organizations. Service
Shares of the Fund may be purchased by a Service Organization through Goldman
Sachs at the net asset value per share next determined after receipt from a
Service Organization
 
                                       26
<PAGE>
 
of an order without the imposition of a sales load. If, by 3:00 p.m. Chicago
time (4:00 p.m. New York time), an order, a check or a Federal Reserve draft is
received from a Service Organization by Goldman Sachs, the price per share will
be the net asset value per share computed on the day the purchase order or such
form of payment is received. See "Net Asset Value."
 
PURCHASE PROCEDURES
 
  Purchases of Service Shares by a Service Organization may be made by placing
an order with Goldman Sachs at 800-621-2550 and either wiring Federal Funds to
The Northern Trust Company ("Northern") as subcustodian for State Street Bank
and Trust Company ("State Street") on the next Business Day or initiating an
ACH transfer to ensure receipt by Northern on the next Business Day. Purchases
may also be made by a Service Organization by check (except that a check drawn
on a foreign bank will not be accepted) or Federal Reserve draft made payable
to "Goldman Sachs Trust--GS Short-Term Government Agency Fund" and should be
directed to Goldman Sachs Trust--GS Short-Term Government Agency Fund, c/o GSAM
Shareholder Services, 4900 Sears Tower, Chicago, Illinois 60606. Payment of the
proceeds of redemption of shares purchased by check may be delayed for a period
of time as described under "Redemption of Service Shares."
 
  The Service Organizations are responsible for the timely transmittal of
purchase orders to Goldman Sachs and payments to Northern or State Street. In
order to facilitate timely transmittal, the Service Organizations have
established times by which purchase orders and payments must be received by
them.
 
OTHER PURCHASE INFORMATION
 
  The Fund does not have any minimum purchase or account requirements with
respect to Service Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Service Shares, and
may establish other requirements such as a minimum account balance. A Service
Organization may effect redemptions of noncomplying accounts, and may impose a
charge for any special services rendered to its customers. Customers should
contact their Service Organization for further information concerning such
requirements and charges.
 
  The Fund reserves the right to redeem Service Shares of any Service
Shareholder whose account balance is less than $100 as a result of earlier
redemptions. Such redemptions will not be implemented if the value of such
Shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days prior written
notice to Service Shareholders whose Service Shares are being redeemed to allow
them to purchase sufficient additional Service Shares to avoid such redemption.
 
PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is received
from a Service Organization by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and dividends will begin on such shares on the
next Business Day, provided that a Federal Funds wire or an ACH transfer is
received by Northern on such day.
 
PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a Service Organization's check
or Federal Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago
time, the purchased shares will be issued and dividends will begin on such
shares on the next Business Day after the Service Organization's check or
Federal Reserve draft is received by Goldman Sachs.
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges of
Service Shares by a particular purchaser (or group of related purchasers). The
Fund or Goldman Sachs may reject or restrict purchases or
 
                                       27
<PAGE>
 
exchanges of Service Shares by a particular purchaser or group, for example,
when a pattern of frequent purchases and sales or exchanges of Service Shares
of the Fund is evident, or if the purchase, sale or exchange orders are, or a
subsequent abrupt redemption might be, of a size that would disrupt management
of the Fund.
 
                              EXCHANGE PRIVILEGE
 
  Service Shares of the Fund may be exchanged by Service Organizations for (i)
Service Shares of any other mutual fund sponsored by Goldman Sachs and
designated as an eligible fund for this purpose and (ii) the relevant class of
any portfolio of Goldman Sachs Money Market Trust at the net asset value next
determined either by writing to Goldman Sachs, Attention: Goldman Sachs
Trust--GS Short-Term Government Agency Fund, c/o GSAM Shareholder Services,
4900 Sears Tower, Chicago, Illinois 60606 or, if previously elected in the
Fund's Account Information Form, by telephone at 800-621-2550 (7:00 a.m. to
3:00 p.m. Chicago time). A shareholder should obtain and read the prospectus
relating to any other fund and its shares or units and consider its investment
objective, policies and applicable fees before making an exchange. Service
Shares acquired by telephone exchange must be registered in the same name(s)
and have the same address as Service Shares of the Fund for which the exchange
is being made.
 
  In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Service Shares" to confirm that
such instructions are genuine. For federal income tax purposes, an exchange is
treated as a sale of the Service Shares surrendered in the exchange, on which
an investor may realize a gain or loss, followed by a purchase of Service
Shares or the relevant class of any portfolio of Goldman Sachs Money Market
Trust received in the exchange. Shareholders should consult their own tax
advisers concerning the tax consequences of an exchange. Exchanges are
available only in states where exchanges may legally be made. The exchange
privilege may be modified or withdrawn at any time on sixty (60) days' written
notice to recordholders of Service Shares and is subject to certain
limitations. See "Purchase of Service Shares."
 
                         REDEMPTION OF SERVICE SHARES
 
  The Fund will redeem its Service Shares upon request of the recordholder of
such Shares on any Business Day at the net asset value next determined after
the receipt by the Transfer Agent of such request in proper form. See "Net
Asset Value." If Service Shares to be redeemed were recently purchased by
check, the Fund may delay transmittal of redemption proceeds until such time
as it has assured itself that good funds have been collected for the purchase
of such Service Shares. This may take up to fifteen (15) days. Redemption
requests may be made by writing to or calling the Transfer Agent at the
address or telephone number set forth on the cover page of this Prospectus. A
Service Organization may request redemptions by telephone if the optional
telephone redemption privilege is elected on the Account Information Form. It
may be difficult to implement redemptions by telephone in times of drastic
economic or market changes. In an effort to prevent unauthorized or fraudulent
redemption or exchange requests by telephone, Goldman Sachs employs reasonable
procedures specified by the Trust to confirm that such instructions are
genuine. Among other things, any redemption
 
                                      28
<PAGE>
 
request that requires money to go to an account or address other than that
designated on the Account Information Form must be in writing and signed by an
authorized person designated on the Account Information Form. Any such written
request is also confirmed by telephone with both the requesting party and the
designated bank account to verify instructions. Exchanges among accounts with
different names, addresses and social security or other taxpayer
identification numbers must be in writing and signed by an authorized person
designated on the Account Information Form. Other procedures may be
implemented from time to time. If reasonable procedures are not implemented,
the Trust may be liable for any loss due to unauthorized or fraudulent
transactions. In all other cases, neither the Fund, the Trust nor Goldman
Sachs will be responsible for the authenticity of redemption or exchange
instructions received by telephone. If Goldman Sachs receives a redemption
request by 3:00 p.m. Chicago time, the Service Shares to be redeemed earn
dividends with respect to the day the request is received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired to the recordholder of Service Shares. Redemption proceeds will
normally be wired on the next Business Day in Federal Funds (for a total one-
day delay), but may be paid up to seven (7) days after receipt of a properly
executed redemption request. Wiring of redemption proceeds may be delayed one
additional Business Day if the Federal Reserve Bank is closed on the day
redemption proceeds would ordinarily be wired. Once wire transfer instructions
have been given by Goldman Sachs, neither the Fund, the Trust nor Goldman
Sachs assumes any further responsibility for the performance of intermediaries
or the customer's Service Organization in the transfer process. If a problem
with such performance arises, the customer should deal directly with such
intermediaries or Service Organization.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by the Transfer Agent. The
request for such redemption will not be considered to have been received in
proper form until such additional documentation has been submitted to the
Transfer Agent by the recordholder of Service Shares.
 
  Service Organizations are responsible for the timely transmittal of
redemption requests by their customers to the Transfer Agent. In order to
facilitate timely transmittal of redemption requests, Service Organizations
have established times by which redemption requests must be received by them.
Additional documentation may be required when deemed appropriate by a Service
Organization.
 
  Except with respect to Service Shareholders whose account balances are less
than $100, Service Shares of the Fund are not redeemable at the option of the
Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                      29
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                          PAGE
                          ----
<S>                       <C>
Summary.................    2
Financial Highlights....    7
Investment Objective and
 Policies...............    8
Investment Adviser......    9
Special Investment Meth-
 ods....................    9
Yield, Market Value and
 Risk Considerations of
 Mortgage-Backed Securi-
 ties...................   13
Other Investments and
 Practices..............   14
Investment Restrictions.   18
Portfolio Turnover......   18
Management..............   19
Dividends...............   20
Net Asset Value.........   21
Performance Information.   21
Shares of the Trust.....   22
Taxation................   24
Additional Information..   25
Administration Plan.....   26
Reports to Shareholders.   26
Purchase of Administra-
 tion Shares............   26
Exchange Privilege......   28
Redemption of Adminis-
 tration Shares.........   28
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                                 GS SHORT-TERM
                            GOVERNMENT AGENCY FUND
                             ADMINISTRATION SHARES
 
                                  MANAGED BY
                                  ----------

                              GOLDMAN SACHS FUNDS
 
                               MANAGEMENT, L.P.
                                AN AFFILIATE OF
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
                                  PROSPECTUS

                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                           GS CORE FIXED INCOME FUND
                              INSTITUTIONAL SHARES
 
                                   MANAGED BY
                                   ----------
                        GOLDMAN SACHS ASSET MANAGEMENT,
                        A SEPARATE OPERATING DIVISION OF
                              GOLDMAN, SACHS & CO.
 
                               ----------------
 
  GS Core Fixed Income Fund (the "Fund") is one fund in a family of funds
advised by Goldman Sachs Asset Management (the "Investment Adviser") or its
affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
  The Fund's investment objective is to provide investors with a total return
consisting of capital appreciation and income that exceeds the total return of
the Lehman Brothers Aggregate Bond Index (the "Index"). There can be no
assurance that the Fund will achieve its investment objective.
 
  The Fund will seek to achieve its objective by investing, under normal market
conditions, primarily in fixed income securities, including securities issued
or guaranteed by the U.S. Government or its agencies, authorities,
instrumentalities or sponsored enterprises, corporate securities, mortgage-
backed securities, and asset-backed securities. The fixed income securities in
which the Fund invests, at the time of investment, will be rated at least BBB
or Baa, or their equivalent rating, by any one of Standard & Poor's Ratings
Group ("Standard & Poor's"), Moody's Investors Service, Inc. ("Moody's") or
Fitch Investors Service, Inc. ("Fitch"), or if unrated by such rating
organizations, determined by the Fund's Investment Adviser to be of comparable
credit quality. The Fund will maintain, under normal market conditions, a
portfolio duration within a range equal to the duration of the Index plus or
minus one year.
 
  Goldman Sachs Asset Management, New York, New York, a separate operating
division of Goldman, Sachs & Co., serves as the Fund's investment adviser.
Goldman, Sachs & Co. serves as the Fund's distributor and transfer agent. The
Trust's custodian is State Street Bank and Trust Company.
                                                        (continued on next page)
 
  INSTITUTIONAL SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR
GUARANTEED OR ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION,
AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
RESERVE BOARD OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN INSTITUTIONAL
SHARES OF THE FUND INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF
PRINCIPAL.
 
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
                 The date of this Prospectus is March 1, 1995.
<PAGE>
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Institutional Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from Goldman, Sachs & Co. by calling the telephone
number, or writing to one of the addresses, listed below.
 
GOLDMAN SACHS TRUST                     GOLDMAN SACHS ASSET MANAGEMENT
4900 SEARS TOWER                        INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606                 ONE NEW YORK PLAZA      
                                        NEW YORK, NEW YORK 10004 
                                                                 
                                                                 
 
GOLDMAN, SACHS & CO.                    GOLDMAN, SACHS & CO.   
DISTRIBUTOR                             TRANSFER AGENT          
85 BROAD STREET                         4900 SEARS TOWER        
NEW YORK, NEW YORK 10004                CHICAGO, ILLINOIS 60606 
TOLL FREE (IN U.S.)...................  800-621-2550
 
                                       2
<PAGE>
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Core Fixed Income Fund (the "Fund") is one fund in a family of funds
advised by Goldman Sachs Asset Management (the "Investment Adviser") or its
affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a total return
consisting of capital appreciation and income that exceeds the total return of
the Lehman Brothers Aggregate Bond Index (the "Index"). There can be no
assurance that the Fund will achieve its investment objective.
 
  The Fund will seek to achieve its objective by investing, under normal market
conditions, primarily in fixed income securities, including securities issued
or guaranteed by the U.S. Government or its agencies, authorities,
instrumentalities or sponsored enterprises, corporate securities, mortgage-
backed securities, and asset-backed securities. The Investment Adviser will
determine periodically the weighting of such securities based upon the
Investment Adviser's expectation for changes in interest rates, market
conditions, the credit quality of individual issuers and other factors it deems
relevant. The Investment Adviser will have access to the research of, and
proprietary technical models developed by, Goldman, Sachs & Co. ("Goldman
Sachs") and will apply quantitative and qualitative analysis in determining the
appropriate allocations among issuers and types of securities.
 
  The fixed income securities in which the Fund invests, at the time of
investment, will be rated at least BBB or Baa, or their equivalent rating, by
any one of Standard & Poor's, Moody's, or Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality. A security will be deemed to have met this requirement if it receives
the minimum required rating from at least one of such rating organizations even
though it has been rated below the minimum rating by one or more other rating
organizations.
 
  The Fund will maintain, under normal market conditions, a portfolio duration,
as defined under "Investment Objective and Policies," within a range equal to
the duration of the Index plus or minus one year. The Investment Adviser may,
however, decrease the Fund's average portfolio duration without limit if the
Investment Adviser believes that a shorter duration is warranted by the outlook
for interest rates or market conditions. There is no limitation as to the
Fund's maximum weighted average portfolio maturity or the maximum stated
maturity with respect to individual securities.
 
  The fixed income securities in which the Fund may invest include obligations
of foreign issuers and obligations denominated in U.S. dollars or foreign
currencies. The non-dollar denominated fixed income securities in which the
Fund may invest will be rated, at the time of investment, at least AA by
Standard & Poor's, Aa by Moody's, or AA by Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality. The Fund's investments in fixed income securities
 
                                       3
<PAGE>
 
may also include Short-Term Investments (as defined below), convertible
securities, custody receipts and municipal securities.
 
  It is expected that the Fund will employ certain interest rate management
techniques. These techniques will be used both to hedge the interest rate risks
associated with the Fund's portfolio securities and to seek to increase total
return. Such techniques include options, futures contracts, options on futures
contracts, interest rate and mortgage swaps, interest rate caps, floors and
collars, forward commitments, lending portfolio securities, repurchase
agreements and mortgage dollar rolls. The Fund may also engage in certain
currency management techniques, including futures and options on currencies,
forward foreign currency exchange contracts and currency swaps, but only for
hedging purposes.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Asset Management,
a separate operating division of Goldman Sachs, serves as the Fund's investment
adviser. In this capacity, the Investment Adviser provides investment advisory
and administrative services and receives from the Fund a monthly fee equal on
an annual basis to 0.40% of the Fund's average daily net assets. Goldman Sachs
is registered with the Securities and Exchange Commission ("SEC") as an
investment adviser. See "Investment Adviser" and "Management--Investment
Adviser."
 
                PURCHASE AND REDEMPTION OF INSTITUTIONAL SHARES
 
  The minimum initial investment is $50,000 in Institutional Shares of the Fund
alone or in combination with Institutional Shares of any other mutual fund
sponsored by Goldman Sachs and designated as an eligible fund for this purpose
and the relevant class of any portfolio of Goldman Sachs Money Market Trust.
Institutional Shares of the Fund may be purchased through Goldman Sachs at the
current net asset value per share without the imposition of a sales load. See
"Purchase of Institutional Shares." The Fund will redeem its Institutional
Shares upon request of a shareholder on any Business Day at the net asset value
next determined after receipt of such request in proper form. See "Redemption
of Institutional Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
shareholder inquiries. See "Management--Distributor and Transfer Agent."
 
                                  RISK FACTORS
 
  YIELD AND MARKET RISK.  The Fund's investments in fixed income securities
entail certain risks, including adverse income and principal value fluctuation
associated with general economic conditions affecting the fixed income
securities market, as well as adverse interest rate changes and volatility of
 
                                       4
<PAGE>
 
yields. Since the Fund invests in securities with a range of maturities, the
volatility of its net asset value may vary (though not necessarily
proportionately) with the average duration of its portfolio. The inherent
volatility risk is such that, during any particular period, there may be a loss
of principal. The net asset value of the shares of the Fund will change in
response to fluctuations in interest rates. When interest rates decline, the
market value of the Fund's fixed income securities and, therefore, the Fund's
net asset value, can be expected to rise. Conversely, when interest rates rise,
the market value of the Fund's fixed income securities and, therefore the
Fund's net asset value can be expected to decline.
 
  COMPARISON TO INDEX. The Fund is not an "index fund" designed to match the
performance of the Index by investing in the securities represented in the
Index in similar proportions to their representation in the Index. Thus, the
Fund is not required to hold any particular portion of the issuers or issues
comprising the Index or to hold them in any particular weightings. As a result,
the Fund's portfolio is likely to be less diverse than and may include
securities not included in the Index. The Fund's performance may also be
affected by its use of derivative instruments and other investment practices.
In addition, the Fund will bear certain expenses which are not considered when
computing the return on the Index. The smaller the size of the Fund, the
greater the effect such expenses would have upon the Fund's performance in
comparison to the Index. Lehman Brothers Inc. may change the composition of the
Index in the future, which may affect the Fund's ability to achieve its
investment objective.
 
  DEFAULT RISK. Investments in fixed income securities are subject to the risk
that the issuer could default on its obligations and the Fund could sustain
losses on such investments. Fixed income securities rated BBB or Baa are
considered medium-grade obligations with speculative characteristics, and
adverse economic conditions or changing circumstances may weaken their issuers'
capability to pay interest and repay principal. Also, to the extent that the
rating assigned to a security in the Fund's portfolio is downgraded by a rating
organization, the market price and liquidity of such security may be adversely
affected. See Appendix A to the Additional Statement for a description of the
securities ratings of Moody's, Standard & Poor's and Fitch.
 
  MORTGAGE AND ASSET BACKED SECURITIES. The Fund's investments in mortgage-
backed and asset-backed securities are often subject to more rapid repayment
than their stated maturity date would indicate as a result of the pass-through
of prepayments of principal on the underlying loans. During periods of
declining interest rates, prepayment of loans underlying mortgage-backed and
asset-backed securities can be expected to accelerate, and thus impair the
Fund's ability to reinvest the returns of principal at comparable yields.
Accordingly, the market values of such securities will vary with changes in
market interest rates generally and in yield differentials among various kinds
of U.S. Government securities and other mortgage-backed and asset-backed
securities. Asset-backed securities present certain risks that are not
presented by mortgage-backed securities because asset-backed securities
generally do not have the benefit of the security interest in collateral that
is comparable to mortgage assets. There is the possibility that, in some cases,
recoveries on repossessed collateral may not be available to support payments
on these securities.
 
  FOREIGN SECURITIES. The Fund may invest in securities of foreign issuers. An
investment in foreign securities may involve risks not present in domestic
investments. Foreign issuers may not be subject to accounting standards or
governmental supervision comparable to that applicable to domestic issuers and
 
                                       5
<PAGE>
 
there may be less publicly available information about their operations.
Foreign markets generally provide less liquidity (and thus potentially greater
price volatility), and typically provide fewer regulatory protections for
investors. Foreign securities can be affected by political and financial
instability abroad.
 
  NON-DOLLAR INVESTMENTS. The performance of investments in non-dollar
securities will depend on, among other things, the strength of the foreign
currency against the dollar and the interest rate environment in the country
issuing the foreign currency in which the instrument is denominated. A rise in
interest rates in a foreign country or a decline in the U.S. dollar value of a
foreign currency relative to the U.S. dollar generally can be expected to
depress the value of the Fund's securities to the extent that such securities
are issued in the country with rising interest rates or denominated in the
declining currency.
 
  OTHER INVESTMENTS AND PRACTICES. The Fund may engage in certain investment
practices and enter into transactions in certain derivative instruments. Such
investment practices and instruments include futures contracts, options and
options on futures contracts, interest rate, mortgage and currency swaps and
interest rate caps, floors and collars, forward commitments, lending portfolio
securities, repurchase agreements and mortgage dollar rolls. The Fund may enter
into these transactions, except for transactions with respect to currencies,
for hedging and speculative purposes (to seek to increase total return). The
Fund may enter into transactions in derivative instruments with respect to
currencies only for hedging purposes. The Fund's use of such investment
practices and derivative instruments involves certain risks, including a
possible lack of correlation between changes in the value of a hedging
instrument and the portfolio security being hedged. The Fund could also be
exposed to a risk of loss if it is unable to close out its derivative positions
because of an illiquid secondary market.
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, and its divisions
and affiliates (including the Investment Adviser), partners and officers, in
the investment activities and business operations of the Fund may present
certain conflicts of interest, as described under "Management--Investment
Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends to declare a daily dividend. Such dividends will accrue to
shareholders of record as of 3:00 p.m. Chicago time, and will be paid monthly.
Over the course of the fiscal year, dividends accrued and paid will constitute
all or substantially all of the Fund's net investment income. From time to time
a portion of such dividends may constitute a return of capital. The Fund also
intends that all or substantially all net realized long-term and short-term
capital gains, if any, after offset by any available capital loss carryforwards
from prior taxable years, will be declared as a dividend and paid at least
annually. Shareholders will receive dividends in additional Institutional
Shares of the Fund or may elect to receive cash as described under "Dividends."
 
                                       6
<PAGE>
 
 
                               FEES AND EXPENSES
                            (INSTITUTIONAL SHARES)*
 
<TABLE>
<CAPTION>
                                 GS CORE FIXED
                                  INCOME FUND
                                 -------------
<S>                              <C>
SHAREHOLDER TRANSACTION EX-
 PENSES:
    Maximum Sales Load Imposed
     on Purchases...............     None
    Maximum Sales Load Imposed
     on Reinvestment Dividends..     None
    Redemption Fees.............     None
    Exchange Fees...............     None
ANNUAL FUND OPERATING EXPENSES:
(AS A PERCENTAGE OF AVERAGE
DAILY NET ASSETS)
    Management Fees.............     0.40%
    Distribution (Rule 12b-1)
     Fees.......................     None
    Other Expenses (after ex-
     pense limitation)..........     0.05%**
                                     ----
        TOTAL FUND OPERATING EX-
         PENSES (AFTER EXPENSE
         LIMITATION)............     0.45%**
                                     ====
</TABLE>
 
EXAMPLE:
 
<TABLE>
<CAPTION>
                                                 1 YEAR 3 YEARS 5 YEARS 10 YEARS
                                                 ------ ------- ------- --------
<S>                                              <C>    <C>     <C>     <C>
You would pay the following expenses on a hypo-
 thetical $1,000
 investment, assuming (1) a 5% annual return
 and (2) redemption at the end of each time pe-
 riod..........................................   $ 5     $14     $25     $57
</TABLE>
- --------
 * The information set forth in the foregoing table and hypothetical example
   relates only to Institutional Shares of the Fund. See "Shares of the Trust."
   Administration Shares and Service Shares of the Fund are subject to
   different fees and expenses. Administration Shares are subject to an
   administration fee of up to 0.25% of average daily net assets. Service
   Shares are subject to a service fee of up to 0.50% of average daily net
   assets. All other expenses related to Administration Shares and Service
   Shares are the same as for Institutional Shares.
** The Investment Adviser voluntarily agreed to reduce or limit certain "Other
   Expenses" of the Fund (excluding advisory fees, payments to Service
   Organizations (as defined below), taxes, interest and brokerage and
   litigation, indemnification and other extraordinary expenses) to the extent
   such expenses exceeded 0.05% per annum of the Fund's average daily net
   assets. If the Investment Adviser had not agreed to reduce or otherwise
   limit certain "Other Expenses" of the Fund, the Fund's other expenses and
   total operating expenses attributable to Institutional Shares of the Fund
   would have been 1.06% and 1.46%, on an annualized basis respectively. The
   foregoing table and example also reflect current operating expenses that
   will be applicable on an ongoing basis. See "Management--Investment
   Adviser."
 
  The purpose of the foregoing table is to assist investors in understanding
the various costs and expenses of the Fund that an investor in the Fund will
bear directly or indirectly. The costs and expenses included in the table and
hypothetical example above are based on actual fees and expenses for the
current fiscal year, and should not be considered as representative of past or
future expenses. Actual fees and expenses may be greater or less than those
indicated. Moreover, while the example assumes a 5% annual return, the Fund's
actual performance will vary and may result in an actual return greater or less
than 5%. See "Management--Investment Adviser."
 
                                       7
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
 
          SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD
 
  The following data with respect to Institutional Shares of the Fund
outstanding during the period indicated below has been audited by Arthur
Andersen LLP, independent public accountants, as indicated in their report
incorporated by reference and attached to the Additional Statement from the
Fund's annual report to shareholders for the period ended October 31, 1994
(the "Annual Report"). This information should be read in conjunction with the
financial statements and related notes incorporated by reference and attached
to the Additional Statement. The Annual Report also contains performance
information and is available upon request and without charge by writing to any
of the addresses on the inside cover of this Prospectus.
 
<TABLE>
<CAPTION>
                             INCOME FROM INVESTMENT                                                                     
                                   OPERATIONS                                                                           
                           ---------------------------                                                                  
                                                        DISTRI-                              RATIO                      
                                                        BUTIONS                                OF                       
                                                           TO                       RATIO     NET                       
                                      NET      TOTAL     SHARE-    NET                OF    INVEST-                     
                                    REALIZED    LOSS    HOLDERS   ASSET              NET      MENT               NET    
                    NET               AND       FROM      FROM    VALUE            EXPENSES  INCOME   PORT-     ASSETS  
                   ASSET     NET   UNREALIZED INVEST-     NET       AT                TO       TO     FOLIO     AT END  
                 VALUE AT  INVEST-  LOSS ON     MENT    INVEST-    END             AVERAGE  AVERAGE   TURN-       OF    
                 BEGINNING  MENT    INVEST-    OPERA-     MENT      OF     TOTAL     NET      NET     OVER      PERIOD  
                 OF PERIOD INCOME   MENTS(a)   TIONS     INCOME   PERIOD RETURN(b)  ASSETS   ASSETS  RATE(c)  (IN 000'S)
                 --------- ------- ---------- --------  --------  ------ --------- -------- -------- -------  ----------
FOR THE PERIOD JANUARY 5, 1994 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,                                         
- -------------------------------------------------------------------------------- 
<S>              <C>       <C>     <C>        <C>       <C>       <C>    <C>       <C>      <C>      <C>      <C>       
1994-                                                                                                                   
Institutional                                                                                                           
Shares..........  $10.00   $0.4648  $(0.7617) $(0.2969) $(0.4648) $9.24    (3.00)% 0.45%(d) 6.48%(d) 288.25%   $24,508  
<CAPTION>                                                                                                                         

                     RATIOS ASSUMING          
                       NO EXPENSE         
                       LIMITATIONS        
                    -----------------     
                              RATIO       
                                OF        
                               NET        
                     RATIO   INVEST-      
                       OF      MENT       
                    EXPENSES  INCOME      
                       TO       TO        
                    AVERAGE  AVERAGE     
                      NET      NET        
                     ASSETS   ASSETS      
                    -------- --------     
FOR THE PERIOD JANUARY 5, 1994 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
- -------------------------------------------------------------------------------
<S>                 <C>       <C>      
1994-               
Institutional     
Shares..........    1.46%(d)  5.47%(d)       
</TABLE> 

- ----------
(a) Includes balancing effect of calculating per share amounts.
(b) Assumes investment at net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(c) Includes effect of mortgage dollar roll transactions.
(d) Annualized.
 
                                       8
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a total return
consisting of capital appreciation and income that exceeds the total return of
the Lehman Brothers Aggregate Bond Index (the "Index"). There can be no
assurance that the Fund will achieve its investment objective.
 
  The Fund will seek to achieve its objective by investing, under normal market
conditions, at least 65% of its total assets in fixed income securities,
including securities issued or guaranteed by the U.S. Government or its
agencies, authorities, instrumentalities or sponsored enterprises, corporate
securities, mortgage-backed securities, and asset-backed securities. A number
of investment strategies will be used to achieve the Fund's investment
objective, including market sector selection, determination of yield curve
exposure, and issuer selection. In addition, the Investment Adviser will
attempt to take advantage of pricing inefficiencies in the fixed income
markets. Market sector selection is the underweighting or overweighting of one
or more of the five market sectors (i.e., U.S. treasuries, U.S. government
agencies, corporate securities, mortgage-backed securities and asset-backed
securities) in which the Fund primarily invests. The decision to overweight or
underweight a given market sector is based on expectations of future yield
spreads between different sectors. Yield curve exposure strategy consists of
overweighting or underweighting different maturity sectors to take advantage of
the shape of the yield curve. Issuer selection is the purchase and sale of
corporate securities based on a corporation's current and expected credit
standing. To take advantage of price discrepancies between securities resulting
from supply and demand imbalances or other technical factors, the Fund may
simultaneously purchase and sell comparable, but not identical, securities. The
Investment Adviser will have access to the research of, and proprietary
technical models developed by, Goldman Sachs and will apply quantitative and
qualitative analysis in determining the appropriate allocations among the
categories of issuers and types of securities.
 
  The fixed income securities in which the Fund invests, at the time of
investment, will be rated at least BBB or Baa, or their equivalent ratings, by
any one of Standard & Poor's, Moody's, or Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality. A security will be deemed to have met this requirement if it receives
the minimum required rating from at least one of such rating organizations even
though it has been rated below the minimum rating by one or more other rating
organizations. If a fixed income security that at the time of purchase
satisfies the Fund's minimum rating criteria is subsequently downgraded below
such rating criteria, the Fund will not be required to dispose of such
security. If a downgrading occurs, the Investment Adviser will consider what
action, including the sale of such security, is in the best interest of the
Fund. In most instances, the Fund expects to dispose of a downgraded security
within a reasonable time after such downgrading. Fixed income securities rated
BBB by Standard & Poor's or Fitch or Baa by Moody's are considered medium grade
obligations with speculative characteristics, and adverse economic conditions
or changing circumstances may weaken capacity to pay interest and repay
principal. See Appendix A to the Additional Statement for a description of the
securities ratings.
 
  PORTFOLIO DURATION. Under normal market conditions, the Fund will maintain a
dollar weighted average portfolio duration within a range equal to the duration
of the Index plus or minus one year. The Investment Adviser may, however,
decrease the Fund's average duration without limit if the Investment Adviser
believes that a shorter duration is warranted by its outlook for interest rates
or market conditions. Duration represents the weighted average maturity of
expected cash flows on a debt obligation, discounted to present value. The
longer the duration of a debt obligation, the more sensitive its value is to
changes in interest rates. Maturity measures only the time until final payment
is due on a bond or other debt security; it takes no account of the pattern of
a security's cash flows over time. In computing the duration of the portfolio
and the Index, the duration of debt obligations that are subject to prepayment
or
 
                                       9
<PAGE>
 
redemption by the issuer are determined based upon estimates of the rate and
timing of prepayment or redemption. There is no limitation as to the Fund's
maximum weighted average portfolio maturity or the maximum stated maturity with
respect to individual securities.
 
  The Fund may use various techniques to shorten or lengthen the dollar
weighted average duration of its portfolio, including the acquisition of
securities at a premium or discount, and entering into transactions in options,
futures contracts, options on futures, interest rate and mortgage swaps and
interest rate caps, floors and collars.
 
  THE INDEX. The Index currently includes U.S. Government securities and fixed
rate, publicly issued, U.S. dollar denominated fixed-income securities rated at
least BBB or Baa or in their equivalent ratings category by Standard & Poor's,
Moody's or Fitch. The securities currently included in the Index have at least
one year remaining to maturity; have an outstanding principal amount of at
least $100 million; and are issued by the following types of issuers, with each
category receiving a different weighting in the Index: U.S. Treasury; agencies,
authorities or instrumentalities of the U.S. Government; issuers of mortgage-
backed securities; utilities; industrial issuers; financial institutions;
foreign issuers; and issuers of asset-backed securities.
 
  The Lehman Brothers Aggregate Bond Index is a trademark of Lehman Brothers.
Inclusion of a security in the Index does not imply an opinion by Lehman
Brothers as to its attractiveness or appropriateness for investment. Although
Lehman Brothers obtains factual information used in connection with the Index
from sources which it considers reliable, Lehman Brothers claims no
responsibility for the accuracy, completeness or timeliness of such information
and has no liability to any person for any loss arising from results obtained
from the use of the index data.
 
  TEMPORARY AND OTHER INVESTMENTS. When in the judgment of the Investment
Adviser market conditions warrant, the Fund may for temporary defensive
purposes hold part or all of its assets in cash (including foreign currencies),
cash equivalents, such as certificates of deposit, commercial paper, time
deposits and bankers' acceptances issued by a bank the unsecured commercial
paper of which is rated A-1 by Standard & Poor's or P-1 by Moody's, short-term
securities issued or guaranteed as to principal and interest by the U.S.
Government, its agencies or instrumentalities and repurchase agreements
collateralized by such instruments ("Short-Term Investments").
 
  To the extent consistent with its investment objective, the Fund's
investments in fixed income securities may also include Short-Term Investments,
foreign securities, convertible securities, custody receipts and municipal
securities.
 
  An investment in foreign securities may involve risks not present in domestic
investments. Foreign issuers may not be subject to accounting standards or
governmental supervision comparable to that applicable to domestic issuers and
there may be less publicly available information about their operations.
Foreign markets generally provide less liquidity (and thus potentially greater
price volatility), and typically provide fewer regulatory protections for
investors. Foreign securities can be affected by political and financial
instability abroad.
 
  The Fund may invest up to 25% of its net assets in obligations of domestic
and foreign issuers which are denominated in currencies other than the U.S.
dollar. The non-dollar denominated fixed income securities in which the Fund
may invest will be rated, at the time of investment, at least AA by Standard &
Poor's, Aa by Moody's, or AA by Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality.
 
                                       10
<PAGE>
 
  The performance of investments in non-dollar denominated securities will
depend on, among other things, the strength of the foreign currency against the
dollar and the interest rate environment in the country issuing the foreign
currency in which the instrument is denominated. Absent events which could
otherwise affect the value of non-dollar securities (such as a change in the
political climate or an issuer's credit quality), appreciation in the value of
the foreign currencies in which the Fund's portfolio securities may be
denominated generally can be expected to increase the U.S. dollar value of the
Fund's non-dollar securities. A rise in foreign interest rates or a decline in
the U.S. dollar value of foreign currencies relative to the U.S. dollar
generally can be expected to depress the value of the Fund's non-dollar
denominated securities. The Fund may engage in certain currency management
techniques, including options and futures on currencies, forward foreign
currency exchange contracts and currency swaps, to hedge the Fund's investments
in non-U.S. dollar denominated securities.
 
  INTEREST RATE TECHNIQUES. It is expected that the Fund will employ certain
interest rate management techniques. These techniques will be used both to
hedge the interest rate risks associated with the Fund's portfolio securities
and to seek to increase total return. Such techniques include options, futures
contracts, options on futures contracts, interest rate and mortgage swaps,
interest rate caps, floors and collars, forward commitments, lending portfolio
securities, repurchase agreements and mortgage dollar rolls.
 
  NON-FUNDAMENTAL POLICIES. Except as otherwise stated under "Investment
Restrictions," the Fund's investment objective and policies are not fundamental
and may be changed without a vote of shareholders. If there is a change in the
Fund's investment objective, shareholders should consider whether the Fund
remains an appropriate investment in light of their then current financial
positions and needs. There can be no assurance that the Fund will be successful
in achieving its investment objective. An investment in shares of the Fund does
not constitute a complete investment program. Investors may wish to complement
an investment in the Fund with other types of investments.
 
                               INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Asset Management, a separate
operating division of Goldman Sachs. The management services provided by the
Investment Adviser are subject to the general supervision of the Trust's Board
of Trustees. The Investment Adviser serves a wide range of clients including
private and public pension funds, endowments, foundations, banks, thrifts,
insurance companies, corporations, and private investors and family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and expertise of
Goldman Sachs, whose investment research effort is one of the largest in the
industry. The in-depth information and analyses generated by Goldman Sachs'
research analysts, economists and portfolio strategists are available to the
Investment Adviser.
 
                        OTHER INVESTMENTS AND PRACTICES
 
U.S. GOVERNMENT SECURITIES
 
  U.S. Government securities are obligations issued or guaranteed by the U.S.
Government or its agencies, authorities, instrumentalities or sponsored
enterprises. Some U.S. Government securities, such
 
                                       11
<PAGE>
 
as Treasury bills, notes and bonds, which differ only in their interest rates,
maturities and times of issuance, are supported by the full faith and credit of
the United States of America. Others, such as obligations issued or guaranteed
by U.S. Government agencies, authorities, instrumentalities or sponsored
enterprises are supported either by (a) the full faith and credit of the U.S.
Government (such as securities of the Small Business Administration), (b) the
right of the issuer to borrow from the Treasury (such as securities of the
Federal Home Loan Banks), (c) the discretionary authority of the U.S.
Government to purchase the agency's obligations (such as securities of the
Federal National Mortgage Association), or (d) only the credit of the issuer.
No assurance can be given that the U.S. Government will continue to provide
financial support to U.S. Government agencies, authorities, instrumentalities
or sponsored enterprises in the future.
 
  Securities guaranteed as to principal and interest by the U.S. Government,
its agencies, authorities, instrumentalities or sponsored enterprises are
deemed to include (a) securities for which the payment of principal and
interest is backed by a guaranty of the U.S. Government or its agencies,
authorities, instrumentalities or sponsored enterprises and (b) participations
in loans made to foreign governments or their agencies that are so guaranteed.
The secondary market for certain of these participations is limited. Such
participations may therefore be regarded as illiquid.
 
  The Fund may also invest in separately traded principal and interest
components of securities guaranteed or issued by the U.S. Government or its
agencies, instrumentalities or sponsored enterprises if such components are
traded independently under the Separate Trading of Registered Interest and
Principal of Securities program ("STRIPS") or any similar program sponsored by
the U.S. Government. The Fund may invest in U.S. Government securities which
are zero coupon or deferred interest securities.
 
MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in mortgage-backed securities. Mortgage-backed securities
represent direct or indirect participations in or obligations collateralized by
and payable from mortgage loans secured by real property. Each mortgage pool
underlying mortgage-backed securities will consist of mortgage loans evidenced
by promissory notes secured by first mortgages or first deeds of trust or other
similar security instruments creating a first lien on owner and non-owner
occupied one-unit to four-unit residential properties, multifamily residential
properties, agricultural properties, commercial properties and mixed use
properties.
 
  MORTGAGE PASS-THROUGH SECURITIES. The Fund may invest in mortgage pass-
through securities, which are fixed or adjustable rate mortgage-backed
securities that provide for monthly payments that are a "pass-through" of the
monthly interest and principal payments (including any prepayments) made by the
individual borrowers on the pooled mortgage loans, net of any fees or other
amounts paid to any guarantor, administrator and/or servicer of the underlying
mortgage loans.
 
  MULTIPLE CLASS MORTGAGE-BACKED SECURITIES AND COLLATERALIZED MORTGAGE
OBLIGATIONS. The Fund may invest in collateralized mortgage obligations
("CMOs"), which are multiple class mortgage-backed securities. CMOs provide an
investor with a specified interest in the cash flow from a pool of underlying
mortgages or of other mortgage-backed securities. CMOs are issued in multiple
classes, each with a specified fixed or adjustable interest rate and a final
scheduled distribution date. In most cases, payments of principal are applied
to the CMO classes in the order of their respective stated maturities, so that
no principal payments will be made on a CMO class until all other classes
having an earlier stated maturity date are paid in full. Sometimes, however,
CMO classes are "parallel pay" (i.e., payments of principal are made to two or
more classes concurrently).
 
                                       12
<PAGE>
 
  STRIPPED MORTGAGE-BACKED SECURITIES. The Fund may also invest in stripped
mortgage-backed securities ("SMBS"), which are derivative multiple class
mortgage-backed securities. SMBS are usually structured with two classes that
receive different proportions of the interest and principal distributions from
a pool of mortgage loans. If the underlying mortgage loans experience greater
than anticipated prepayments of principal, the Fund may fail to fully recoup
its initial investment in these securities. Although the market for such
securities is increasingly liquid, the Investment Adviser, in accordance with
guidelines and standards adopted by the Board of Trustees, may determine that
government issued SMBS are not readily marketable. If so, these securities will
be considered illiquid for purposes of the Fund's limitation on investments in
illiquid securities.
 
  AGENCY MORTGAGE SECURITIES. The Fund may invest in mortgage-backed securities
issued or guaranteed by the U.S. Government or any of its agencies,
instrumentalities or sponsored enterprises, including but not limited to
Government National Mortgage Association ("Ginnie Mae"), Federal National
Mortgage Association ("Fannie Mae") and Federal Home Loan Mortgage Corporation
("Freddie Mac"). Ginnie Mae securities are backed by the full faith and credit
of the U.S. Government, which means that the U.S. Government guarantees that
the interest and principal will be paid when due. Fannie Mae securities and
Freddie Mac securities are not backed by the full faith and credit of the U.S.
Government; however, these enterprises have the ability to obtain financing
from the U.S. Treasury. There are several types of agency mortgage securities
currently available, including, but not limited to, guaranteed mortgage pass-
through certificates and multiple class securities.
 
  PRIVATELY ISSUED MORTGAGE-BACKED SECURITIES. The Fund may also invest in
mortgage-backed securities issued by trusts or other entities formed or
sponsored by private originators of and institutional investors in mortgage
loans and other non-governmental entities (or representing custodial
arrangements administered by such institutions). These private originators and
institutions include savings and loan associations, mortgage bankers,
commercial banks, insurance companies, investment banks and special purpose
subsidiaries of the foregoing. Privately issued mortgage-backed securities are
generally backed by pools of conventional (i.e., non-government guaranteed or
insured) mortgage loans. Since such mortgage-backed securities normally are not
guaranteed by an entity having the credit standing of Ginnie Mae, Fannie Mae or
Freddie Mac, in order to receive a high quality rating, they normally are
structured with one or more types of "credit enhancement." Such credit
enhancements fall generally into two categories: (1) liquidity protection and
(2) protection against losses resulting after default by a borrower and
liquidation of the collateral. Liquidity protection refers to the providing of
cash advances to holders of mortgage-backed securities when a borrower on an
underlying mortgage fails to make its monthly payment on time. Protection
against losses resulting after default and liquidation is designed to cover
losses resulting when, for example, the proceeds of a foreclosure sale are
insufficient to cover the outstanding amount on the mortgage. Such protection
may be provided through guarantees, insurance policies or letters of credit,
through various means of structuring the transaction or through a combination
of such approaches.
 
ASSET-BACKED SECURITIES
 
  The Fund may invest in asset-backed securities, which represent
participations in, or are secured by and payable from, pools of assets such as
motor vehicle installment sale contracts, installment loan contracts, leases on
various types of real and personal property, receivables from revolving credit
(credit card) agreements and other categories of receivables. Such asset pools
are securitized through the use of privately-formed trusts or special purpose
entities. Payments or distributions of principal and interest may be guaranteed
up to certain amounts and for a certain time period by a letter of credit or a
pool insurance policy issued by a financial institution unaffiliated with the
trust or corporation, or other credit enhancements may be present. Asset-backed
securities present credit risks that are not presented by mortgage-backed
securities because asset-backed securities generally do not have the benefit of
a security interest in collateral that is comparable to mortgage assets.
 
                                       13
<PAGE>
 
CORPORATE DEBT OBLIGATIONS
 
  The Fund may invest in corporate debt obligations, including obligations of
industrial, utility and financial issuers. In addition to obligations of
corporations, corporate debt obligations include bank obligations and zero
coupon securities, issued by financial institutions and corporations. Corporate
debt obligations are subject to the risk of an issuer's inability to meeting
principal and interest payments on the obligations and may also be subject to
price volatility due to such factors as market interest rates, market
perception of the creditworthiness of the issuer and general market liquidity.
 
MUNICIPAL SECURITIES
 
  Municipal securities consist of bonds, notes and other instruments issued by
or on behalf of states, territories and possessions of the United States
(including the District of Columbia) and their political subdivisions, agencies
or instrumentalities, the interest on which is exempt from regular federal
income tax. Municipal securities are often issued to obtain funds for various
public purposes and also include "private activity bonds" or industrial
development bonds, which are issued by or on behalf of public authorities to
obtain funds for privately operated facilities. Due to their tax exempt status,
the yields and market prices of municipal securities may be adversely affected
by changes in tax rates and policies, which may have less effect on the market
for taxable fixed income securities. Moreover, certain types of municipal
securities, such as housing revenue bonds, involve prepayment risks which could
affect the yield on such securities. Investments in municipal securities are
subject to the risk that the issuer could default on its obligations. Such a
default could result from the inadequacy of the sources of revenues from which
interest and principal payments are to be made or the assets collateralizing
such obligations. Revenue bonds, including private activity bonds, are backed
only by specific assets or revenue sources and not by the full faith and credit
of the governmental issuer. The Fund's distributions to shareholders of any
income it earns from Municipal Securities will not be tax-exempt.
 
CUSTODIAL RECEIPTS
 
  The Fund may acquire custodial receipts in respect of securities issued or
guaranteed as to principal and interest by the U.S. Government, its agencies,
authorities, instrumentalities or sponsored enterprises. Such custodial
receipts evidence ownership of future interest payments, principal payments or
both on certain notes or bonds issued by the U.S. Government or its agencies or
instrumentalities. For certain securities law purposes, custodial receipts are
not considered obligations of the U.S. Government.
 
CONVERTIBLE SECURITIES
 
  Convertible securities may include corporate notes or preferred stock but are
ordinarily a long-term debt obligation of the issuer convertible at a stated
exchange rate into common stock of the issuer. As with all debt securities, the
market value of convertible securities tends to decline as interest rates
increase and, conversely, to increase as interest rates decline. Convertible
securities generally offer lower interest or dividend yields than non-
convertible securities of similar quality. However, when the market price of
the common stock underlying a convertible security exceeds the conversion
price, the price of the convertible security tends to reflect the value of the
underlying common stock. As the market price of the underlying common stock
declines, the convertible security tends to trade increasingly on a yield
basis, and thus may not depreciate to the same extent as the underlying common
stock. Convertible securities in which the Fund invests will be subject to the
same rating criteria as its other investments in fixed income securities.
 
INVERSE FLOATING RATE SECURITIES
 
  The Fund may invest in "leveraged" inverse floating rate debt instruments
("inverse floaters"). The interest rate on an inverse floater resets in the
opposite direction from the market rate of interest to which
 
                                       14
<PAGE>
 
the inverse floater is indexed. An inverse floater may be considered to be
leveraged to the extent that its interest rate varies by a magnitude that
exceeds the magnitude of the change in the index rate of interest. The higher
the degree of leverage of an inverse floater, the greater the volatility of its
market value.
 
OPTIONS ON SECURITIES AND SECURITIES INDICES
 
  WRITING COVERED OPTIONS. The Fund may write (sell) covered call and put
options on any securities in which it may invest or on any securities index
composed of securities in which it may invest. A call option grants the
purchaser the right to buy, and obligates the writer to sell, the underlying
security at the exercise price if the option is exercised during the option
period. A put option grants the purchaser the right to sell, and obligates the
writer to buy, the underlying security at the exercise price if the option is
exercised during the option period. All call options written by the Fund are
covered, which means that the Fund will own the securities subject to the
option so long as the option is outstanding. All put options written by the
Fund are covered, which means that the Fund would have deposited with its
custodian cash, or high grade, liquid debt securities with a value at least
equal to the exercise price of the put option. Call and put options written by
the Fund will also be considered to be covered to the extent that the Fund's
liabilities under such options are wholly or partially offset by its rights
under call and put options purchased by the Fund.
 
  PURCHASING OPTIONS. The Fund may purchase put and call options on any
securities in which it may invest or on any securities index composed of
securities in which it may invest.
 
  YIELD CURVE OPTIONS. The Fund may purchase and write options on the yield
"spread," or yield differential between two securities. Such transactions are
referred to as "yield curve" options. In contrast to other types of options, a
yield curve option is based on the difference between the yields of designated
securities, rather than the prices of the individual securities, and is settled
through cash payments. Accordingly, a yield curve option is profitable to the
holder if this differential widens (in the case of a call) or narrows (in the
case of a put), regardless of whether the yields of the underlying securities
increase or decrease. All yield curve options written by the Fund will be
covered in the manner described under "Writing Covered Options."
 
  RISKS ASSOCIATED WITH OPTIONS TRANSACTIONS. The Fund may purchase and write
such options on securities and indices that are listed on a national or foreign
securities exchange or traded in the over-the-counter market. There is no
assurance that a liquid secondary market on a domestic or foreign options
exchange will exist for any particular exchange-traded option or at any
particular time. If the Fund is unable to effect a closing purchase transaction
with respect to covered options it has written, the Fund will not be able to
sell the underlying securities or dispose of assets held in a segregated
account until the options expire or are exercised. Similarly, if the Fund is
unable to effect a closing sale transaction with respect to options it has
purchased, it would have to exercise the options in order to realize any profit
and will incur transaction costs upon the purchase or sale of the underlying
securities. In a closing purchase or sale transaction, the Fund acquires a
position that offsets and cancels an option position then held by the Fund.
 
  The Fund may purchase and sell options traded over-the-counter with broker-
dealers who make markets in these options. The ability to terminate over-the-
counter options is more limited than with exchange-traded options and may
involve the risk that broker-dealers participating in such transactions will
not fulfill their obligations. Until such time as the staff of the SEC changes
its position, the Fund will treat purchased over-the-counter options and all
assets used to cover written over-the-counter options as illiquid securities.
However, for options written with primary dealers in U.S. Government securities
pursuant to an agreement requiring a closing purchase transaction at a formula
price, the amount of illiquid securities may be calculated with reference to a
formula approved by the SEC staff.
 
                                       15
<PAGE>
 
  The writing and purchase of options is a highly specialized activity which
involves investment techniques and risks different from those associated with
ordinary portfolio securities transactions. The successful use of options for
hedging purposes depends in part on the Investment Adviser's ability to predict
future price fluctuations and the degree of correlation between the options and
securities markets. If the Investment Adviser is incorrect in its determination
of the correlation between the securities or indices on which the options are
written and purchased and the securities in the Fund's investment portfolio, or
with respect to yield curve options, the direction or the extent of the
movement of the yield differential, the investment performance of the Fund will
be less favorable than it would have been in the absence of such option
transactions. The Fund pays brokerage commissions or spreads in connection with
its options transactions. The writing of options could significantly increase
the Fund's portfolio turnover rate.
 
FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS
 
  To hedge against changes in interest rates, securities prices or currency
exchange rates or, except in the case of currency related contracts, to seek to
increase total return, the Fund may purchase and sell various kinds of futures
contracts, and purchase and write call and put options on any such futures
contracts. The Fund will engage in futures and related options transactions
only for bona fide hedging purposes as defined in regulations of the
Commodities Futures Trading Commission or to seek to increase total return to
the extent permitted by such regulations.
 
  The Fund may not purchase or sell futures contracts or purchase or sell
related options to increase total return, except for closing purchase or sale
transactions, if immediately thereafter the sum of the amount of initial margin
deposits on and premiums paid for the Fund's outstanding positions in futures
and options on futures entered into for the purpose of seeking to increase
total return rather than hedging would exceed 5% of the market value of the
Fund's net assets. Transactions in futures contracts and options on futures
involve brokerage costs, require margin deposits and, in the case of contracts
and options obligating the Fund to purchase securities or currencies, require
the Fund to segregate cash and liquid, high grade debt securities with a value
equal to the amount of the Fund's obligations.
 
  While transactions in futures contracts and options on futures may reduce
certain risks, such transactions themselves entail certain other risks. See
"Investment Objectives and Policies--Futures Contracts and Options on Futures
Contracts" in the Additional Statement. Thus, while the Fund may benefit from
the use of futures and options on futures, unanticipated changes in interest
rates, securities prices or currency exchange rates may result in a poorer
overall performance for the Fund than if it had not entered into any futures
contracts or options transactions. The loss incurred by the Fund in writing
options on futures is potentially unlimited and may exceed the amount of the
premium received.
 
  The use of futures may increase the volatility of the Fund's net asset value.
The profitability of the Fund's trading in futures to increase total return
will depend on the Investment Adviser's ability to correctly analyze the
futures markets. In addition, because of the low margin deposits normally
required in futures trading, a relatively small price movement in a futures
contract may result in substantial losses to the Fund. Further, futures trading
may be illiquid, and exchanges may limit fluctuations in futures contract
prices during a single day.
 
  In the event of an imperfect correlation between a futures position and a
portfolio position which is intended to be protected, the desired protection
may not be obtained and the Fund may be exposed to risk of loss. In addition,
it is not possible to hedge fully or perfectly against changes in the value of
securities denominated in foreign currencies because the value of such
securities is also likely to fluctuate
 
                                       16
<PAGE>
 
as a result of independent factors not related to currency fluctuations.
Therefore, perfect correlation between the Fund's futures positions and
portfolio positions will be impossible to achieve. The Fund's transactions in
foreign currency, forward foreign currency exchange contracts, options and
futures contracts may be limited by the requirements of the Internal Revenue
Code of 1986, as amended (the "Code") for qualification as a regulated
investment company.
 
INTEREST RATE, MORTGAGE AND CURRENCY SWAPS AND INTEREST RATE CAPS, FLOORS AND
COLLARS
 
  The Fund may enter into interest rate, mortgage and currency swaps for
hedging purposes and may also enter into interest rate and mortgage swaps to
seek to increase total return. The Fund may also enter into other types of
interest rate swap arrangements such as caps, floors and collars. Interest rate
swaps involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, such as an exchange of fixed rate
payments for floating rate payments. Mortgage swaps are similar to interest
rate swaps in that they represent commitments to pay and receive interest. The
notional principal amount, however, is tied to a reference pool or pools of
mortgages. Currency swaps involve the exchange of their respective rights to
make or receive payments in specified currencies. The purchase of an interest
rate cap entitles the purchaser, to the extent that a specified index exceeds a
predetermined interest rate, to receive payments of interest on a notional
principal amount from the party selling said interest rate cap. The purchase of
an interest rate floor entitles the purchaser, to the extent that a specified
index falls below a predetermined interest rate, to receive payment of interest
on a notional principal amount from the party selling such interest rate floor.
An interest rate collar is the combination of a cap and a floor that preserves
a certain return within a predetermined range of interest rates. Since interest
rate, mortgage and currency swaps, caps, floors and collars are individually
negotiated, the Fund expects to achieve an acceptable degree of correlation
between its portfolio investments and its swap, cap, floor and collar positions
entered into for hedging purposes.
 
  The Fund will enter into interest rate and mortgage swaps only on a net
basis, which means that the two payment streams are netted out, with the Fund
receiving or paying, as the case may be, only the net amount of the two
payments. Interest rate and mortgage swaps do not involve the delivery of
securities, other underlying assets or principal. Accordingly, the risk of loss
with respect to interest rate and mortgage swaps is limited to the net amount
of payments that the Fund is contractually obligated to make. If the other
party to an interest rate swap defaults, the Fund's risk of loss consists of
the net amount of payments that the Fund is contractually entitled to receive,
if any. In contrast, currency swaps usually involve the delivery of the entire
principal amount of one designated currency in exchange for the other
designated currency. Therefore, the entire principal value of a currency swap
is subject to the risk that the other party to the swap will default on its
contractual delivery obligations. The Fund will maintain in a segregated
account with the Fund's custodian cash and liquid, high grade debt securities
equal to the net amount, if any, of the excess of the Fund's obligations over
its entitlements with respect to swap transactions. To the extent that the net
amount of a swap is held in such segregated account, the Fund and the
Investment Adviser believe that swaps do not constitute senior securities under
the Investment Company Act of 1940, as amended (the "Act") and, accordingly,
will not treat them as being subject to the Fund's borrowing restriction.
 
  The Fund will not enter into interest rate, mortgage or currency swaps or
interest rate cap, floor and collar transactions unless the unsecured
commercial paper, senior debt or claims paying ability of the other party is
rated either AA or A-1 or better by Standard & Poor's or Aa or P-1 or better by
Moody's or, if unrated by such rating organizations, determined to be of
comparable quality by the Investment Adviser.
 
  The use of interest rate, mortgage and currency swaps, as well as interest
rate caps, floors and collars, is a highly specialized activity which involves
investment techniques and risks different from those
 
                                       17
<PAGE>
 
associated with ordinary portfolio securities transactions. If the Investment
Adviser is incorrect in its forecasts of market values, interest rates and
currency exchange rates, the investment performance of the Fund would be less
favorable than it would have been if this investment technique were not used.
The staff of the SEC currently takes the position that swaps, caps, floors and
collars are illiquid and thus subject to the Fund's 15% limitation on illiquid
securities.
 
  RISKS OF DERIVATIVE TRANSACTIONS. The Fund's transactions in interest rate,
mortgage and currency swaps and interest rate caps, floors and collars,
options, futures and options on futures and currency forward contracts involve
certain risks, including a possible lack of correlation between changes in the
value of hedging instruments and the portfolio assets being hedged, the
potential illiquidity of the markets for derivative instruments, the risks
arising from the margin requirements and related leverage factors associated
with such transactions. The use of these management techniques to seek to
increase total return also involves the risk of loss if the Investment Adviser
is incorrect in its expectation of fluctuations in securities prices or
interest rates.
 
ILLIQUID SECURITIES
 
  The Fund will not invest more than 15% of the value of its net assets in
securities which are illiquid, including securities that are not readily
marketable, repurchase agreements maturing in more than seven days, interest
rate, mortgage and currency swaps, interest rate caps, floors and collars,
certain over-the-counter options, certain SMBS and securities offered in the
United States that are restricted as to resale. However, a restricted security
is not considered to be illiquid if the Trustees of the Trust determine, based
upon the Investment Adviser's continuing review of the trading markets for the
specific restricted security, under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale under Rule 144A under the
Securities Act of 1933 is liquid. In addition, a repurchase agreement which by
its terms can be liquidated before its nominal fixed term on seven days or less
notice is regarded as a liquid instrument. Subject to the 15% limitation on
illiquid investments, the Fund may acquire U.S. Government securities in a
private placement.
 
  Since it is not possible to predict with assurance exactly how the market for
restricted securities sold and offered under Rule 144A will develop, the Board
of Trustees will carefully monitor the Fund's investments in these securities,
focusing on such important factors, among others, as valuation, credit quality,
liquidity and availability of information. This investment practice could have
the effect of increasing the level of illiquidity in the Fund to the extent
that qualified institutional buyers become for a time uninterested in
purchasing these restricted securities.
 
REPURCHASE AGREEMENTS
 
  The Fund may enter into repurchase agreements with dealers in U.S. Government
securities and member banks of the Federal Reserve System which furnish
collateral at least equal in value or market price to the amount of their
repurchase obligation. In a repurchase agreement, the Fund purchases a debt
security from a seller which undertakes to repurchase the security at a
specified resale price on an agreed future date (ordinarily a week or less).
The resale price generally exceeds the purchase price by an amount which
reflects an agreed-upon market interest rate for the term of the repurchase
agreement. The primary risk is that, if the seller defaults, the Fund might
suffer a loss to the extent that the proceeds from the sale of the underlying
securities and other collateral held by the Fund in connection with the related
repurchase agreement are less than the repurchase price. Repurchase agreements
maturing in more than seven days are considered by the Fund to be illiquid. In
addition, the Fund, together with other
 
                                       18
<PAGE>
 
registered investment companies having advisory agreements with the Adviser,
may transfer uninvested cash balances into a single joint account, the daily
aggregate balance of which will be invested in one or more repurchase
agreements.
 
MORTGAGE DOLLAR ROLLS
 
  The Fund may enter into mortgage "dollar rolls" in which the Fund sells
securities for delivery in the current month and simultaneously contracts with
the same counterparty to repurchase similar (same type, coupon and maturity),
but not identical securities on a specified future date. During the roll
period, the Fund loses the right to receive principal and interest paid on the
securities sold. However, the Fund would benefit to the extent of any
difference between the price received for the securities sold and the lower
forward price for the future purchase (often referred to as the "drop") or fee
income plus the interest earned on the cash proceeds of the securities sold
until the settlement date of the forward purchase. Unless such benefits exceed
the income, capital appreciation and gain or loss due to mortgage prepayments
that would have been realized on the securities sold as part of the mortgage
dollar roll, the use of this technique will diminish the investment performance
of the Fund compared with what such performance would have been without the use
of mortgage dollar rolls. All cash proceeds will be invested in instruments
that are permissible investments for the Fund. The Fund will hold and maintain
in a segregated account until the settlement date cash or liquid, high grade
debt securities in an amount equal to the forward purchase price.
 
  For financial reporting and tax purposes, the Fund treats mortgage dollar
rolls as two separate transactions; one involving the purchase of a security
and a separate transaction involving a sale. The Fund does not currently intend
to enter into mortgage dollar rolls that are accounted for as a financing.
 
  Mortgage dollar rolls involve certain risks including the following: if the
broker-dealer to whom the Fund sells the security becomes insolvent, the Fund's
right to purchase or repurchase the mortgage-related securities subject to the
mortgage dollar roll may be restricted and the instrument which the Fund is
required to repurchase may be worth less than an instrument which the Fund
originally held. Successful use of mortgage dollar rolls will depend upon the
Investment Adviser's ability to manage its interest rate and mortgage
prepayment exposure. For these reasons, there is no assurance that mortgage
dollar rolls can be successfully employed.
 
WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES
 
  The Fund may purchase securities on a when-issued basis. When-issued
transactions arise when securities are purchased by the Fund with payment and
delivery taking place in the future in order to secure what is considered to be
an advantageous price and yield to the Fund at the time of entering into the
transaction. The Fund may also purchase securities on a forward commitment
basis. In a forward commitment transaction, the Fund contracts to purchase
securities for a fixed price at a future date beyond customary settlement time.
The Fund is required to hold and maintain in a segregated account until the
settlement date cash or liquid, high grade debt obligations in an amount
sufficient to meet the purchase price. Alternatively, the Fund may enter into
offsetting contracts for the forward sale of other securities that it owns. The
purchase of securities on a when-issued or forward commitment basis involves a
risk of loss if the value of the security to be purchased declines prior to the
settlement date. Although the Fund would generally purchase securities on a
when-issued or forward commitment basis with the intention of actually
acquiring securities for its portfolio, the Fund may dispose of a when-issued
security or forward commitment prior to settlement if the Investment Adviser
deems it appropriate to do so.
 
                                       19
<PAGE>
 
LENDING OF PORTFOLIO SECURITIES
 
  The Fund may also seek to increase its income by lending portfolio
securities. Under present regulatory policies, such loans may be made to
institutions, such as certain broker-dealers, and are required to be secured
continuously by collateral in cash, cash equivalents, or U.S. Government
securities maintained on a current basis in an amount at least equal to the
market value of the securities loaned. Cash collateral may be invested in cash
equivalents. If the Investment Adviser determines to make security loans, the
value of the securities loaned may not exceed 33 1/3% of the value of the total
assets of the Fund. See "Investment Restrictions" in the Additional Statement.
The Fund may experience a loss or delay in the recovery of its securities if
the institution with which it has engaged in a portfolio loan transaction
breaches its agreement with the Fund.
 
FOREIGN CURRENCY TRANSACTIONS AND OPTIONS
 
  The Fund may, to the extent it invests in securities denominated in a
currency other than the U.S. dollar, enter into forward foreign currency
exchange contracts in order to protect against adverse changes in future
foreign currency exchange rates. The Fund may enter into contracts to purchase
foreign currencies to protect against an anticipated rise in the U.S. dollar
price of securities it intends to purchase. The Fund may enter into contracts
to sell foreign currencies to protect against the decline in value of its
foreign currency denominated portfolio securities, or a decline in the value of
anticipated interest or dividends from such securities, due to a decline in the
value of foreign currencies against the U.S. dollar. Contracts to sell foreign
currency could limit any potential gain which might be realized by the Fund if
the value of the hedged currency increased.
 
  Currency exchange rates may fluctuate significantly over short periods of
time. They generally are determined by the forces of supply and demand in the
foreign exchange markets and the relative merits of investments in different
countries, actual or anticipated changes in interest rates and other complex
factors, as seen from an international perspective. Currency exchange rates
also can be affected unpredictably by intervention by U.S. or foreign
governments or central banks or the failure to intervene. Since a forward
foreign currency exchange contract is not guaranteed by an exchange or
clearinghouse, a default on the contract would deprive the Fund of unrealized
profits or force the Fund to cover its commitments for purchase or resale, if
any, at the current market price.
 
  The Fund's custodian will place cash or liquid, high grade debt securities
into a segregated account of the Fund in an amount equal to the value of the
Fund's total assets committed to the consummation of forward foreign currency
exchange contracts requiring the Fund to purchase foreign currencies. The
segregated account will be marked to market on a daily basis. Thus, if the
value of securities placed in the segregated account declines, additional cash
or securities will be placed in the account on a daily basis so that the value
of the account will equal the amount of the Fund's commitments with respect to
such contracts.
 
  The Fund may, to the extent it invests in foreign securities, purchase and
write put and call options on foreign currencies for the purpose of protecting
against declines in the dollar value of foreign portfolio securities and
anticipated income from such securities and against increases in the U.S.
dollar cost of foreign securities to be acquired. As with other kinds of
option-writing transactions, however, the writing of an option on foreign
currency will constitute only a partial hedge, up to the amount of the premium
received. If and when the Fund seeks to close out an option, the Fund could be
required to purchase or sell foreign currencies at disadvantageous exchange
rates, thereby incurring losses. The purchase of an option on foreign currency
may constitute an effective hedge against exchange rate fluctuations; however,
in the event of exchange rate movements adverse to the Fund's position, the
Fund may forfeit the entire amount of the premium plus related transaction
costs. Options on foreign currencies to be written or purchased by the Fund
will be traded on U.S. and foreign exchanges or over-the-counter.
 
                                       20
<PAGE>
 
OTHER INVESTMENT COMPANIES
 
  The Fund reserves the right to invest up to 10% of its total assets,
calculated at the time of purchase, in the securities of other investment
companies including business development companies and small business
investment companies. The Fund may not invest more than 5% of its total assets
in the securities of any one investment company or acquire more than 3% of the
voting securities of any other investment company. Pursuant to an exemptive
order obtained from the SEC, other investment companies in which the Fund may
invest include money market funds for which the Investment Adviser or any of
its affiliates serves as investment adviser. The Fund will indirectly bear its
proportionate share of any management fees and other expenses paid by
investment companies in which it invests in addition to the advisory fee paid
by the Fund. However, to the extent that the Fund invests in a money market
fund for which the Investment Adviser or any of its affiliates acts as adviser,
the advisory fee payable by the Fund to the Investment Adviser will be reduced
by an amount equal to the Fund's proportionate share of the advisory and
administration fees paid by such money market fund to the Investment Adviser or
any of its affiliates.
 
                                  RISK FACTORS
 
  The net asset value of the Fund's shares will change with changes in the
value of its portfolio securities. The net asset value of the shares of the
Fund can be expected to change as general levels of interest rates fluctuate.
Volatility may be greater during periods of general economic uncertainty and
interest rate fluctuation.
 
  The fixed income securities in the Fund's portfolio will generally tend to
decrease in value when interest rates rise and increase in value when interest
rates fall (although mortgage-backed and asset-backed securities will generally
have less potential for capital appreciation during periods of declining rates
than other securities). Because fixed income investments are interest rate
sensitive, the Fund's performance will depend in large part upon the ability of
the Fund to anticipate and respond to fluctuations in market interest rates and
to utilize the hedging and other active management techniques described above.
The yield on most interest only and principal only securities is extremely
sensitive to the rate of principal payments, including prepayments. Prepayments
with respect to such securities could result in the Fund failing to recoup its
initial investment even though the securities are rated in the highest credit
rating category. Operating results will also depend upon opportunities for the
investment of the Fund's assets, including the availability of suitable
securities.
 
  Derivative mortgage-backed securities are subject to different combinations
of interest rate and/or prepayment risk. In addition, particular derivative
securities may also be leveraged such that their exposure (i.e., price
sensitivity) to interest rate and/or prepayment risk is magnified. The
Investment Adviser may use derivative mortgage-backed securities and other
derivative securities consistently with the Fund's investment objective for a
variety of purposes including adjusting the average duration or interest rate
sensitivity of the Fund's portfolio or attempting to enhance the Fund's total
return. The Investment Adviser manages the risks and benefits of derivative
mortgage-backed securities and other derivative securities by prudent analysis,
selection and monitoring of such securities included in the Fund's portfolio.
 
  Fund shares may be expected to fluctuate in value. If shares are redeemed at
a price that is less than the price at which the shares were purchased, the
investor will experience a loss of principal.
 
  An investment in the Fund and the Fund's investments and practices entail
certain other risks, including the risk that an issuer may default on its
obligations, risks associated with investments in derivative securities,
mortgage and asset-backed securities and foreign securities and the risk that
return on an investment in the Fund may not exceed the return on the Index. For
a discussion of such risks, see "Summary--Risk Factors".
 
                                       21
<PAGE>
 
                            INVESTMENT RESTRICTIONS
 
  The Fund's investment objective and, except as discussed below, policies are
not fundamental and may be changed without a vote of shareholders. The Fund is
subject to certain investment restrictions which, as described in more detail
in the Additional Statement, are fundamental policies that cannot be changed
without the approval of a majority of the outstanding shares of the Fund. Among
other restrictions, the Fund may not, with respect to 75% of its total assets,
purchase securities of any one issuer (other than U.S. Government securities)
if more than 5% of its total assets would be invested in such issuer or invest
more than 25% of its total assets in the securities of issuers (including any
one foreign government, but excluding the U.S. Government) in any one industry.
The Fund may not borrow money, except to finance share redemptions and
portfolio settlements and from banks for temporary or short-term purposes,
provided that the Fund maintains asset coverage of 300% for all borrowings. As
a nonfundamental policy, the Fund may not purchase securities while borrowings
exceed 5% of the value of the Fund's total assets.
 
                               PORTFOLIO TURNOVER
 
  The Fund may engage in active short-term trading to benefit from yield
disparities among different issues of securities or among the different sectors
of the U.S. and foreign markets for fixed income securities, to seek short-term
profits during periods of fluctuating interest rates, or for other reasons.
Such trading will increase the Fund's portfolio turnover rate and may increase
the incidence of short-term capital gain (distributions of which are taxable to
shareholders as ordinary income). A high rate of portfolio turnover (100% or
higher) involves correspondingly greater expenses which must be borne by the
Fund and its shareholders and may under certain circumstances make it more
difficult for the Fund to qualify as a regulated investment company under the
Code. The portfolio turnover rate is calculated by dividing the lesser of the
dollar amount of sales or purchases of portfolio securities by the average
monthly value of the Fund's portfolio securities, excluding securities having a
maturity at the date of purchase of one year or less. The portfolio turnover
rate includes the effect of entering into mortgage dollar rolls.
 
                                   MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct and supervise the Fund's
daily business operations. The Additional Statement contains information as to
the identity of, and other information about, the Trustees and officers of the
Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Asset Management, One New York Plaza, New York, New York 10004,
a separate operating division of Goldman Sachs, acts as the investment adviser
of the Fund. Goldman Sachs was registered as an investment adviser in 1981. As
of January 31, 1995, Goldman Sachs Asset Management, together with its
affiliates, acted as investment adviser, administrator or distributor for
approximately $48.7 billion in assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Asset
Management, subject to the general supervision of the Trust's Board of
Trustees, manages the Fund's portfolio and provides for the administration of
all of the Fund's other affairs. It is the responsibility of the Investment
Adviser to make investment decisions for the Fund and to place purchase and
sale orders for the Fund's portfolio transactions. Such orders may be directed
to any broker including, to the extent and in the
 
                                       22
<PAGE>
 
manner permitted by applicable law, Goldman Sachs or its affiliates. Goldman
Sachs has agreed to permit the Fund to use the name "Goldman Sachs" or a
derivative thereof as part of the Fund's name for as long as the Investment
Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Jonathan A. Beinner, Theodore T. Sotir and
Richard C. Lucy. Messrs. Beinner and Lucy each specialize in investing in a
particular type of security the Fund may hold. Mr. Sotir helps with overall
portfolio strategy and is a member of the Investment Adviser's risk control
team. Mr. Beinner joined Goldman Sachs Asset Management in 1990 and is
currently a Vice President, after working in the trading and arbitrage group of
Franklin Savings Association. Mr. Sotir joined Goldman Sachs Asset Management
in 1993 and is currently a Vice President, after working as a portfolio manager
at Fidelity Management Trust Company. Prior to joining Fidelity, Mr. Sotir
worked for Goldman Sachs for six years. Mr. Lucy joined Goldman Sachs Asset
Management in 1992 and is currently a Vice President, after spending nine years
managing fixed income assets at Brown Brothers Harriman & Co.
 
  As compensation for the services rendered to the Fund by Goldman Sachs Asset
Management pursuant to the Investment Advisory Agreement, and the assumption by
Goldman Sachs Asset Management of the related expenses, the Fund pays Goldman
Sachs Asset Management a fee, computed daily and payable monthly, at an annual
rate equal to 0.40% of the Fund's average daily net assets. For the period
January 5, 1994 (commencement of operations) through October 31, 1994, the Fund
paid an advisory fee to the Investment Adviser equal on an annual basis to
0.40% of the Fund's average daily net assets.
 
  The Investment Adviser has voluntarily agreed to reduce or otherwise limit
certain expenses of the Fund (excluding advisory fees, payments to Service
Organizations (as defined below), taxes, interest and brokerage and litigation,
indemnification and other extraordinary expenses) to the extent such expenses
exceed 0.05% annually of the Fund's average net assets. Such reductions or
limits, if any, are calculated monthly on a cumulative basis and may be
discontinued or modified by the Investment Adviser at its discretion at any
time. The Investment Adviser has also agreed to reduce its fees payable (to the
extent of such fees) by the amount the Fund's expenses exceed the applicable
expense limitations imposed by state securities administrators. See
"Management--Expenses" in the Additional Statement.
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser, Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts and
other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities, currencies and
instruments as the Fund. Goldman Sachs and its affiliates will not have any
obligation to make available any information regarding their proprietary
activities or strategies, or the activities or strategies used for other
accounts managed by them, for the benefit of the management of the Fund and it
is not anticipated that the Investment Adviser will have access to proprietary
information for the purpose of managing the Fund. The results of the Fund's
investment activities, therefore, may differ from those of Goldman Sachs and
its affiliates and it is possible that the Fund could sustain losses during
periods in which Goldman Sachs and its affiliates and other accounts achieve
significant profits on their trading for proprietary or other accounts. From
time to time, the Fund's activities may be limited because of regulatory
restrictions applicable to Goldman Sachs and its affiliates, and/or their
internal policies designed to comply with such restrictions. See "Activities of
Goldman Sachs and its Affiliates and Other Accounts Managed by Goldman Sachs"
in the Additional Statement for further information.
 
                                       23
<PAGE>
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact Goldman
Sachs (as Transfer Agent) at the address or the telephone number set forth on
the inside front cover page of this Prospectus.
 
                                   DIVIDENDS
 
  The Fund intends to declare a daily dividend. Such dividend will accrue to
shareholders of record as of 3:00 p.m. Chicago time, and will be paid monthly.
Over the course of the fiscal year, dividends accrued and paid will constitute
all or substantially all of the Fund's net investment income. From time to time
a portion of such dividends may constitute a return of capital. The Fund also
intends that all net realized long-term and short-term capital gains will be
declared as a dividend at least annually. In determining amounts of capital
gains to be distributed, capital losses including any available capital loss
carryovers from prior years will be offset against capital gains.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination is
made as of 3:00 p.m. Chicago time.
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case, cash
payment will be made on the first Business Day of the succeeding month. Payment
of dividends with respect to capital gains, if any, when declared will be made
in additional shares of the Fund at the net asset value on the payment date,
unless cash distributions are elected. This election to receive dividends in
cash is initially made on the Account Information Form and may be changed upon
written notice to the Transfer Agent at any time prior to the record date for a
particular dividend or distribution. If cash dividends are elected with respect
to the Fund's monthly net investment income dividends, then cash dividends must
also be elected with respect to the non-long term capital gains component, if
any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or realized or unrealized appreciation of the Fund's portfolio securities.
Therefore, subsequent distributions (or portions thereof) of taxable income or
realized appreciation on such shares may be taxable to the investor even if the
net asset value of the shares is, as a result of the distributions, reduced
below the cost of such shares and the distributions (or portions thereof)
represent a return of a portion of the purchase price.
 
                                NET ASSET VALUE
 
  The net asset value per share of the Fund is calculated by the Fund's
custodian as of the close of regular trading on the New York Stock Exchange
(normally 3:00 p.m. Chicago time, 4:00 p.m. New York
 
                                       24
<PAGE>
 
time), immediately after determination of the income to be declared as a
dividend on each Business Day (as such term is defined under "Additional
Information"). Net asset value per share of each class is calculated by
determining the net assets attributable to each class and dividing by the
number of outstanding shares of that class.
 
  Investments in mortgage-backed securities and other debt obligations are
valued at fair value, based on yield equivalents, a pricing matrix or other
sources, under valuation procedures established by the Trust's Board of
Trustees. Other portfolio securities for which accurate market quotations are
readily available are valued on the basis of quotations furnished by a pricing
service or provided by dealers in such securities. Portfolio securities for
which accurate market quotations are not readily available are valued in
accordance with the Trust's valuation procedures. Debt obligations with a
remaining maturity of 60 days or less are valued at amortized cost. The Board
of Trustees has determined that the amortized cost of such securities
approximates fair market value.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish average annual total return and yield
in advertisements and communications to shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most recent
calendar quarter, assuming reinvestment of all dividends and distributions at
net asset value. The total return calculation assumes a complete redemption of
the investment at the end of the relevant period. The Fund may also from time
to time advertise total return on a cumulative, average, year-by-year or other
basis for various specified periods by means of quotations, charts, graphs or
schedules. In addition to the above, the Fund may from time to time advertise
its performance relative to certain performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value of the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided in
shareholder reports, the Fund may, in its discretion, from time to time make a
list of its holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of Fund shares in existence. Because each class of shares may be
subject to different expenses, the yield, total return and
 
                                       25
<PAGE>
 
distribution rate calculations with respect to each class of shares of the Fund
for the same period will differ. Due to the fees payable under the Service Plan
and the Administration Plan, the investment performance, for any period, of the
Institutional Shares will always be higher than the Service Shares and the
Administration Shares and the investment performance of the Administration
Shares will always be higher than the performance of the Service Shares. See
"Shares of the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement the Trustees are
authorized to issue an unlimited number of shares of beneficial interest, $.001
par value per share. The Trustees of the Trust are responsible for the overall
management and supervision of its affairs. The Trustees of the Trust have
authority under the Trust Agreement to create and classify shares of beneficial
interest in separate series, without further action by shareholders. As of the
date of this Prospectus, the Trustees have authorized shares of the Fund and
ten other series. Additional series may be added in the future. The Trustees
also have authority to classify or reclassify any series or portfolio of shares
into one or more classes. Pursuant thereto, the Trustees have authorized the
issuance of three classes of the Fund. These classes are: Institutional Shares,
Administration Shares and Service Shares. As of October 31, 1994, no
Administration Shares or Service Shares of the Fund were outstanding.
 
  Each Institutional Share, Administration Share and Service Share of the Fund
represents an equal proportionate interest in the assets belonging to the Fund.
All Fund expenses are based on a percentage of the Fund's aggregate average net
assets, except that the respective account administration and service fees
relating to a particular class will be borne exclusively by that class. It is
contemplated that most Administration Shares and Service Shares will be held in
accounts of which the record owner is a bank or other institution acting,
directly or through an agent, as nominee for its customers who are the
beneficial owners of the shares or another organization designated by such bank
or institution. Administration Shares and Service Shares will each be marketed
only to such institutional investors at net asset value with no sales load.
Institutional Shares may be purchased for accounts in the name of an investor
or institution that is not compensated by the Fund for services provided to the
institution's customers. Administration Shares may be purchased for accounts
held in the name of an institution that provides certain account administration
services to its customers, including maintenance of account records and
processing orders to purchase, redeem or exchange Administration Shares.
Administration Shares bear the cost of account administration fees at the
annual rate of up to 0.25% of the average daily net assets of such
Administration Shares. Service Shares may be purchased for accounts held in the
name of an institution that provides certain account administration and
shareholder liaison services to its customers, including maintenance of account
records and processing orders to purchase, redeem or exchange Service Shares,
responding to customer inquiries and assisting customers with investment
procedures. Service Shares bear the cost of service fees at the annual rate of
up to 0.50% of the average daily net assets of such Service Shares.
(Institutions that provide services to holders of Administration or Service
Shares are referred to in this Prospectus as "Service Organizations").
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration and Service Shares) to
its customers and thus receive different compensation with respect to different
classes of shares of the Fund. Administration Shares and Service Shares may
each have certain exclusive voting rights on matters relating to their
respective plans. Currently, shares of each class may be exchanged only for
shares of the same class in another fund and certain money market funds
sponsored by Goldman Sachs. The Fund may amend such policy in the future.
Dividends paid by the
 
                                       26
<PAGE>
 
Fund, if any, with respect to each class of shares will be calculated in the
same manner, at the same time and on the same day and will be in the same
amount, except for differences caused by the fact that the respective account
administration and service fees relating to a particular class will be borne
exclusively by that class. Similarly, the net asset value per share will vary
depending on the class of shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or conversion rights.
 
  Under Massachusetts law, there is a remote possibility that shareholders of a
business trust could, under certain circumstances, be held personally liable as
partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
  Unless otherwise required by the Act, ordinarily it will not be necessary for
the Trust to hold annual meetings of shareholders. As a result, shareholders
may not consider each year the election of Trustees or the appointment of
independent accountants. Shareholders may remove a Trustee by the affirmative
vote of at least two-thirds of the Trust's outstanding shares and the Trustees
must promptly call a meeting for such purpose when requested to do so in
writing by the record holders of not less than 10% of the outstanding shares of
the Trust. Shareholders may, under certain circumstances, communicate with
other shareholders in connection with requesting a special meeting of
shareholders. The Board of Trustees, however, will call a special meeting for
the purpose of electing Trustees if, at any time, less than a majority of
Trustees holding office at the time were elected by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue
certificates representing Institutional, Administration or Service Shares.
Instead, the Transfer Agent maintains a record of each Institutional,
Administration and Service shareholder's ownership. Each shareholder receives
confirmation of purchase and redemption orders from the Transfer Agent. Shares
and any dividends and distributions paid by the Fund are reflected in account
statements from the Transfer Agent.
 
                                    TAXATION
 
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code and intends to continue to qualify for such treatment.
To qualify for treatment as a regulated investment company, the Fund must
satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
 
                                       27
<PAGE>
 
  Dividends paid by the Fund from net investment income, the excess of net
short-term capital gain over net long-term capital loss, certain net foreign
currency gains, and original issue discount or certain market discount income
will be taxable to shareholders as ordinary income. Dividends paid by the Fund
from the excess of net long-term capital gain over net short-term capital loss
will be taxable as long-term capital gains regardless of how long the
shareholders have held their shares. These tax consequences will apply
regardless of whether distributions are received in cash or reinvested in
shares. Certain distributions paid by the Fund in January of a given year may
be taxable to shareholders as if received the prior December 31. Shareholders
will be informed annually about the amount and character of distributions
received from the Fund for federal income tax purposes.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
even though the distribution represents a return of a portion of the purchase
price.
 
  Redemptions and exchanges of shares are taxable events on which a shareholder
may recognize a gain or loss.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on distributions, redemptions and
exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other shareholders
that are not U.S. persons under the Code are subject to different tax rules and
may be subject to non-resident alien withholding at the rate of 30% (or a lower
rate provided by an applicable tax treaty) on amounts treated as ordinary
dividends from the Fund.
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local or
foreign taxes on payments received from the Fund. A state income (and possibly
local income and/or intangible property) tax exemption is generally available
to the extent the Fund's distributions are derived from interest on (or, in the
case of intangibles taxes, the value of its assets is attributable to) certain
U.S. Government obligations, provided in some states that certain thresholds
for holdings of such obligations and/or reporting requirements are satisfied.
 
                             ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at the meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days when
the Investment Adviser, The Northern Trust Company, State Street Bank and Trust
Company and the Federal Reserve Bank of New York are open for business, which
is Monday through Friday except for holidays. Such holidays currently are: New
Year's Day (observed), Martin Luther King Day, Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Columbus Day,
Thanksgiving and Christmas. On those days when one or more of such
organizations close early as a result of such day being a partial holiday or
otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                       28
<PAGE>
 
                            REPORTS TO SHAREHOLDERS
 
  Institutional Shareholders will receive an annual report containing audited
financial statements and a semi-annual report. Each Institutional Shareholder
will also be provided with a printed confirmation for each transaction in the
shareholder's account and an individual monthly statement. A year-to-date
statement for any account will be provided upon request made to Goldman Sachs.
 
SUB-ACCOUNTING SERVICE
 
  The Fund has designed special procedures to assist banks and other
institutional investors desiring to establish multiple accounts (master
accounts and their sub-accounts). Sub-accounts may be established with
registration by name and/or number. Institutions will not normally be charged
for this service unless otherwise agreed upon. Upon request, master accounts
will be provided with a monthly summary report which sets forth in order by
account number (or name) the share balance at month end and the income, if any,
together with the total share balance and income, if any, for the master
account.
 
                        PURCHASE OF INSTITUTIONAL SHARES
 
  Institutional Shares of the Fund may be purchased through Goldman Sachs at
the net asset value per share next determined after receipt of an order without
the imposition of a sales load. If, by 3:00 p.m. Chicago time (4:00 p.m. New
York time), an order, a check or a Federal Reserve draft is received by Goldman
Sachs, the price per share will be the net asset value per share computed on
the day the purchase order or such form of payment is received. See "Net Asset
Value."
 
PURCHASE PROCEDURES
 
  Purchases of Institutional Shares may be made by placing an order with
Goldman Sachs at 800-621-2550 and either wiring Federal Funds to The Northern
Trust Company ("Northern") as subcustodian for State Street Bank and Trust
Company ("State Street") on the next Business Day or initiating an ACH transfer
to ensure receipt by Northern on the next Business Day. Purchases may also be
made by check (except that a check drawn on a foreign bank will not be
accepted) or Federal Reserve draft made payable to "Goldman Sachs Trust-GS Core
Fixed Income Fund" and should be directed to Goldman Sachs Trust-GS Core Fixed
Income Fund, c/o GSAM Shareholder Services, 4900 Sears Tower, Chicago, Illinois
60606. Payment of the proceeds of redemption of shares purchased by check may
be delayed for a period of time as described under "Redemption of Institutional
Shares."
 
  In order to make an initial investment in the Fund, an investor must
establish an account with the Fund by furnishing necessary information to the
Fund or Goldman Sachs. An Account Information Form, a copy of which is attached
to this Prospectus, should be used to establish such an account. Subsequent
purchases of shares may be made in the manner set forth in the preceding
paragraph.
 
  The minimum initial investment is $50,000 in Institutional Shares of the Fund
alone or in combination with Institutional Shares of any other mutual fund
sponsored by Goldman Sachs and designated as an eligible fund for this purpose
and the relevant class of any portfolio of Goldman Sachs Money Market Trust.
The minimum investment requirement may be waived for current and former
officers, partners, directors or employees of Goldman Sachs or any of its
affiliates or for other investors at the discretion of the Trust's officers. No
minimum amount is required for subsequent investments. The Fund reserves the
 
                                       29
<PAGE>
 
right to redeem the Institutional Shares of any Institutional Shareholder whose
account balance is less than $100 as a result of earlier redemptions. Such
redemptions will not be implemented if the value of an Institutional
Shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days' prior written
notice to Institutional Shareholders whose Institutional Shares are being
redeemed to allow them to purchase sufficient additional Institutional Shares
of the Fund to avoid such redemption.
 
OTHER PURCHASE INFORMATION
 
  PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is
received by Goldman Sachs by 3:00 p.m. Chicago time, the purchased shares will
be issued and dividends will begin on such shares on the next Business Day,
provided that a Federal Funds wire or an ACH transfer is received by Northern
on such day.
 
  PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a purchase check or Federal
Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and dividends will begin on such shares on the
next Business Day after the check or Federal Reserve draft is received by
Goldman Sachs.
 
  Banks, trust companies or other institutions through which investors acquire
Institutional Shares may impose charges in connection with transactions in
Institutional Shares. Such institutions should be consulted for information
regarding such charges.
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges by a
particular purchaser (or group of related purchasers). The Fund or Goldman
Sachs may reject or restrict purchases or exchanges of Institutional Shares by
a particular purchaser or group, for example, when a pattern of frequent
purchases and sales or exchanges of Institutional Shares of the Fund is
evident, or if the purchase and sale or exchange orders are, or a subsequent
abrupt redemption might be, of a size that would disrupt management of the
Fund.
 
                               EXCHANGE PRIVILEGE
 
  Institutional Shares of the Fund may be exchanged for (i) Institutional
Shares of any other mutual fund sponsored by Goldman Sachs and designated as an
eligible fund for this purpose and (ii) the relevant class of any portfolio of
Goldman Sachs Money Market Trust at the net asset value next determined either
by writing to Goldman Sachs, Attention: Goldman Sachs Trust-GS Core Fixed
Income Fund, c/o GSAM Shareholder Services, 4900 Sears Tower, Chicago, Illinois
60606 or, if previously elected in the Fund's Account Information Form, by
telephone at 800-621-2550 (7:00 a.m. to 3:00 p.m. Chicago time). A shareholder
should obtain and read the prospectus relating to any other fund and its shares
or units and consider its investment objective, policies and applicable fees
before making an exchange. Under the telephone exchange privilege,
Institutional Shares may be exchanged among accounts with different names,
addresses and social security or other taxpayer identification numbers only if
the exchange request is in writing and is received in accordance with the
procedures set forth under "Redemption of Institutional Shares."
 
   In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs
 
                                       30
<PAGE>
 
employs reasonable procedures as set forth under "Redemption of Institutional
Shares" to confirm that such instructions are genuine. For federal income tax
purposes, an exchange is treated as a sale of the shares surrendered in the
exchange, on which an investor may realize a gain or loss, followed by a
purchase of Institutional Shares, or the relevant class of any portfolio of
Goldman Sachs Money Market Trust received in the exchange. Shareholders should
consult their own tax advisers concerning the tax consequences of an exchange.
 
  All exchanges which represent an initial investment in a fund must satisfy
the minimum investment requirements of the fund into which the Institutional
Shares are being exchanged, except that this requirement may be waived at the
discretion of the officers of such fund. Exchanges are available only in states
where exchanges may legally be made. The exchange privilege may be modified or
withdrawn at any time on sixty (60) days' written notice to Institutional
Shareholders and is subject to certain limitations See "Purchase of
Institutional Shares."
 
                       REDEMPTION OF INSTITUTIONAL SHARES
 
  The Fund will redeem its Institutional Shares upon request of an
Institutional Shareholder on any Business Day at the net asset value next
determined after the receipt by the Transfer Agent of such request in proper
form. See "Net Asset Value." If Institutional Shares to be redeemed were
recently purchased by check, the Fund may delay transmittal of redemption
proceeds until such time as it has assured itself that good funds have been
collected for the purchase of such Institutional Shares. This may take up to
fifteen (15) days. Redemption requests may be made by writing to or calling the
Transfer Agent at the address or telephone number set forth on the inside front
cover page of this Prospectus. An Institutional Shareholder may request
redemptions by telephone if the optional telephone redemption privilege is
elected on the Account Information Form accompanying this Prospectus. It may be
difficult to implement redemptions by telephone in times of drastic economic or
market changes.
 
  In an effort to prevent unauthorized or fraudulent redemption or exchange
requests by telephone, Goldman Sachs employs reasonable procedures specified by
the Trust to confirm that such instructions are genuine. Among other things,
any redemption request that requires money to go to an account or address other
than that designated on the Account Information Form must be in writing and
signed by an authorized person designated on the Account Information Form. Any
such written request is also confirmed by telephone with both the requesting
party and the designated bank account to verify instructions. Exchanges among
accounts with different names, addresses and social security or other taxpayer
identification numbers must be in writing and signed by an authorized person
designated on the Account Information Form. Other procedures may be implemented
from time to time. If reasonable procedures are not implemented, the Trust may
be liable for any loss due to unauthorized or fraudulent transactions. In all
other cases, neither the Fund, the Trust nor Goldman Sachs will be responsible
for the authenticity of redemption or exchange instructions received by
telephone.
 
  Written requests for redemptions must be signed by each Institutional
Shareholder whose signature has been guaranteed by a bank, a securities broker
or dealer, a credit union having authority to issue signature guarantees, a
savings and loan association, a building and loan association, a cooperative
bank, a federal savings bank or association, a national securities exchange, a
registered securities association or a clearing agency, provided that such
institution satisfies the standards established by the
 
                                       31
<PAGE>
 
Transfer Agent. If Goldman Sachs receives a redemption request by 3:00 p.m.
Chicago time, the Institutional Shares to be redeemed earn dividends with
respect to the day the request is received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired as Federal Funds to the bank account designated in the
Institutional Shareholder's Account Information Form. Redemption proceeds will
normally be wired on the next Business Day in Federal Funds (for a total one-
day delay), but may be paid up to seven (7) days after receipt of a properly
executed redemption request. Wiring of redemption proceeds may be delayed one
additional Business Day if the Federal Reserve Bank is closed on the day
redemption proceeds would ordinarily be wired. In order to change the bank
designated on the Account Information Form to receive redemption proceeds, a
written request must be received by the Transfer Agent. This request must be
signature guaranteed as set forth above. Further documentation may be required
for executors, trustees or corporations. Once wire transfer instructions have
been given by Goldman Sachs, neither the Fund, the Trust nor Goldman Sachs
assumes any further responsibility for the performance of intermediaries or the
Institutional Shareholder's bank in the transfer process. If a problem with
such performance arises, the Institutional Shareholder should deal directly
with such intermediaries or bank.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by Goldman Sachs. The request
for such redemption will not be considered to have been received in proper form
until such additional documentation has been received.
 
  Except with respect to Institutional Shareholders whose account balances are
less than $100, Institutional Shares are not redeemable at the option of the
Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                       32
<PAGE>
 
                                   APPENDIX A
 
                    GUIDELINES FOR CERTIFICATION OF TAXPAYER
               IDENTIFICATION NUMBER ON ACCOUNT INFORMATION FORM
 
  You are required by law to provide the Fund with your correct Taxpayer
Identification Number (TIN), regardless of whether you file tax returns.
Failure to do so may subject you to penalties. Failure to provide your correct
TIN and to sign your name in the Certification section of the Account
Information Form could result in withholding of 31% by the Fund for the federal
backup withholding tax on distributions, redemptions, exchanges and other
payments relating to your account.
 
  Any tax withheld may be credited against taxes owed on your federal income
tax return.
 
  If you do not have a TIN, you should apply for one immediately by contacting
your local office of the Social Security Administration or the Internal Revenue
Service (IRS). Backup withholding could apply to payments relating to your
account while you are awaiting receipt of a TIN.
 
  Special rules apply for certain entities. For example, for an account
established under a Uniform Gifts or Transfers to Minors Act, the TIN of the
minor should be furnished.
 
  If you have been notified by the IRS that you are subject to backup
withholding because you failed to report your interest and/or dividend income
on your tax return and you have not been notified by the IRS that such
withholding should cease, you must cross out item (2) in the Certification
section of the Account Information Form.
 
  If you are an exempt recipient, you should furnish your TIN and certify your
exemption by signing the Certification section. Exempt recipients include:
corporations, tax-exempt pension plans and IRA's, governmental agencies,
financial institutions, registered securities and commodities dealers and
others.
 
  If you are a nonresident alien or foreign entity, you must provide a
completed Form W-8 to the Fund in order to avoid withholding on certain
payments. Other payments to you may be subject to nonresident alien withholding
of up to 30%.
 
  For further information regarding backup and nonresident alien withholding,
see Sections 3406, 1441 and 1442 of the Internal Revenue Code and consult your
tax adviser.
 
                                      A-1
<PAGE>
 
 THIS ACCOUNT INFORMATION FORM SHOULD BE FORWARDED PROMPTLY TO GOLDMAN, SACHS &
                                      CO.
                 NO REDEMPTION CAN BE MADE PRIOR TO ITS RECEIPT
                   GOLDMAN, SACHS & CO.--INSTITUTIONAL FUNDS
                            ACCOUNT INFORMATION FORM
SEND TO: GOLDMAN, SACHS & CO. INSTITUTIONAL FUNDS  MASTER NO.  _________________
         4900 SEARS TOWER                                        FUND USE ONLY
         CHICAGO, ILLINOIS 60606                 DATE: _______________________
         1-800-621-2550                          
 
                              INITIAL INVESTMENT:
 
( ) GOLDMAN SACHS MONEY MARKET TRUST  ( ) GS--ADJUSTABLE RATE GOVERNMENT AGENCY
    Fill in Portfolio(s):                     FUND
( ) OTHER FUND (Please write name of  ( ) GS--CORE FIXED INCOME FUND
    Fund in the space provided        ( ) GS--SHORT DURATION TAX-FREE FUND
    below):                           ( ) GS--SHORT-TERM GOVERNMENT AGENCY FUND
 
                                      ( ) GS--SHORT-TERM GOVERNMENT AGENCY FUND
  -------------------------------     ( ) GS--GOVERNMENT AGENCY PORTFOLIO (FOR
                                              FINANCIAL INSTITUTIONS)
 
- --------------------------------------------------------------------------------
 
A. ACCOUNT RECORD

   ---------------------------------          ---------------------------------
            NAME OF ACCOUNT                           TELEPHONE NUMBER

   ---------------------------------
          STREET OR P.O. BOX 
                                              U.S. CITIZEN OR
   ---------------------------------          RESIDENT? YES [_] NO [_]
   CITY         STATE          ZIP            IF NO IS CHECKED, FILL IN
                                              COUNTRY OF TAX RESIDENCE:  
   ---------------------------------                                     
               ATTENTION                      -----------------------------
- --------------------------------------------------------------------------------
B. DIVIDENDS AND DISTRIBUTIONS--CHECK APPROPRIATE BOX (SEE "DIVIDENDS")
  1. DIVIDENDS (INCLUDING NET SHORT TERM       
     CAPITAL GAINS)--                          [_] CASH     [_] UNITS/SHARES 
 
  2. NET LONG-TERM CAPITAL GAINS               
     DISTRIBUTIONS--                           [_] CASH     [_] UNITS/SHARES 
  3. DIVIDENDS AND CAPITAL GAINS REINVESTED                 [_] UNITS/SHARES
     IN ANOTHER GOLDMAN SACHS PORTFOLIO ACCOUNT:
   (SEE PROSPECTUS REGARDING LIMITATIONS ON THIS PRIVILEGE.)
 
   FUND NAME_________________________ ACCOUNT NUMBER__________________________
    (IF NO BOX IS CHECKED, DIVIDENDS AND CAPITAL GAINS DISTRIBUTIONS WILL BE
                                  REINVESTED.)
- --------------------------------------------------------------------------------
C. SOCIAL SECURITY NUMBER OR OTHER TAXPAYER IDENTIFICATION NUMBER CERTIFICATION
   TAXPAYER IDENTIFICATION NUMBER: _____________________________________________
   UNDER PENALTIES OF PERJURY, I CERTIFY THAT (1) THE NUMBER SHOWN ON THIS FORM
   IS MY CORRECT TAXPAYER IDENTIFICATION NUMBER (OR I AM WAITING FOR A NUMBER TO
   BE ISSUED TO ME), AND (2) I AM NOT SUBJECT TO BACKUP WITHHOLDING BECAUSE I AM
   EXEMPT FROM BACKUP WITHHOLDING OR I HAVE NOT BEEN NOTIFIED BY THE INTERNAL
   REVENUE SERVICE (IRS) THAT I AM SUBJECT TO BACKUP WITHHOLDING AS A RESULT OF
   A FAILURE TO REPORT ALL INTEREST OR DIVIDENDS, OR THE IRS HAS NOTIFIED ME
   THAT I AM NO LONGER SUBJECT TO BACKUP WITHHOLDING. SEE THE "GUIDELINES FOR
   CERTIFICATION OF TAXPAYER IDENTIFICATION NUMBER" ON ACCOUNT INFORMATION FORM,
   CONTAINED IN THE APPENDIX TO THE ACCOMPANYING PROSPECTUS.
 
      SIGNATURE             DATE           NAME (PRINT) AND TITLE (IF ANY)
SIGN                                      
HERE  -------------------------------      -------------------------------------
   
      -------------------------------      -------------------------------------
- --------------------------------------------------------------------------------
D. OPTIONAL TELEPHONE EXCHANGE (SEE "EXCHANGE PRIVILEGE")
   [_] GOLDMAN, SACHS & CO. IS HEREBY AUTHORIZED TO ACCEPT AND ACT UPON
   TELEPHONE INSTRUCTIONS FROM THE UNDERSIGNED OR ANY OTHER PERSON FOR THE
   EXCHANGE OF SHARES/UNITS OF THE FUND INTO ANY FUND DESCRIBED IN THE
   ACCOMPANYING PROSPECTUS. THE UNDERSIGNED UNDERSTANDS AND AGREES THAT NEITHER
   THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. WILL BE LIABLE FOR ANY LOSS,
   EXPENSE, OR COST ARISING OUT OF ANY TELEPHONE REQUEST EFFECTED HEREUNDER.
<PAGE>
 
- --------------------------------------------------------------------------------
E. OPTIONAL REDEMPTION PLANS--CHECK APPROPRIATE BOX (SEE "REDEMPTION OF
   UNITS/SHARES")
   [_] 1. I AUTHORIZE GOLDMAN, SACHS & CO. TO HONOR TELEPHONE, TELEGRAPHIC, OR
   OTHER INSTRUCTIONS WITHOUT SIGNATURE GUARANTEE, FROM ANY PERSON FOR THE
   REDEMPTION OF SHARES FOR THE ABOVE ACCOUNT PROVIDED THAT THE PROCEEDS ARE
   TRANSMITTED TO THE FOLLOWING BANK ACCOUNT(S) ONLY. I UNDERSTAND ANY CHANGES
   TO THE FOLLOWING INFORMATION MUST BE MADE IN WRITING TO GOLDMAN, SACHS & CO.,
   MUST CONTAIN THE APPROPRIATE NUMBER OF SIGNATURES LISTED BELOW AND ALL
   SIGNATURES MUST BE SIGNATURE GUARANTEED. ABSENT ITS OWN GROSS NEGLIGENCE,
   NEITHER THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. SHALL BE LIABLE FOR SUCH
   REDEMPTIONS OR FOR PAYMENTS MADE TO ANY UNAUTHORIZED ACCOUNT.
                                       OR
   [_] 2. I HAVE FURNISHED GOLDMAN, SACHS & CO. WITH A SIGNATURE GUARANTEE (SEE
   SECTION G). I AUTHORIZE GOLDMAN, SACHS & CO. TO HONOR TELEPHONE, TELEGRAPHIC,
   OR OTHER INSTRUCTIONS, FROM ANY PERSON FOR THE REDEMPTION OF SHARES FOR THE
   ABOVE ACCOUNT PROVIDED THAT THE PROCEEDS ARE TRANSMITTED TO THE FOLLOWING
   BANK ACCOUNT(S) ONLY. ANY CHANGES TO THE FOLLOWING INFORMATION MUST BE MADE
   IN WRITING TO GOLDMAN, SACHS & CO. (BUT WITHOUT SIGNATURE GUARANTEE) AND
   CONTAIN THE APPROPRIATE NUMBER OF SIGNATURES LISTED BELOW. ABSENT ITS OWN
   GROSS NEGLIGENCE, NEITHER THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. SHALL
   BE LIABLE FOR SUCH REDEMPTIONS OR FOR PAYMENTS MADE TO ANY UNAUTHORIZED
   ACCOUNT.
 
PLEASE COMPLETE THE FOLLOWING BANK ACCOUNT INFORMATION AND PLACE A LINE THROUGH
THE UNUSED PORTION. ADDITIONAL INSTRUCTIONS MAY BE ADDED ON SEPARATE PAGES, IF
NECESSARY.
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
NUMBER OF BANK ACCOUNT DESTINATIONS COMPLETED IN SECTION E OF THIS FORM: [_]
 
- --------------------------------------------------------------------------------
  [_] 3. SPECIAL DRAFT (TRANSFER AGENT TO SUPPLY)
  [_] 4. BY MAIL
<PAGE>
 
F. SIGNATURE AUTHORIZATION
   BY THE EXECUTION OF THIS ACCOUNT INFORMATION FORM, THE UNDERSIGNED REPRESENTS
   AND WARRANTS THAT IT HAS FULL RIGHT, POWER AND AUTHORITY TO MAKE THE
   INVESTMENT APPLIED FOR PURSUANT TO THIS APPLICATION AND IS ACTING FOR ITSELF
   OR IN SOME FIDUCIARY CAPACITY IN MAKING SUCH INVESTMENT, AND THE
   INDIVIDUAL(S) SIGNING ON BEHALF OF THE UNDERSIGNED REPRESENT AND WARRANT THAT
   THEY ARE DULY AUTHORIZED TO SIGN THIS APPLICATION AND TO PURCHASE AND REDEEM
   UNITS/SHARES ON BEHALF OF THE UNDERSIGNED. THE UNDERSIGNED AFFIRMS THAT IT
   HAS RECEIVED A CURRENT FUND PROSPECTUS.
 
   THE UNDERSIGNED UNDERSTANDS THAT A LESSER DEGREE OF FLEXIBILITY CONCERNING
   THE PRECISE TIMING OF A REDEMPTION OF ITS INVESTMENT IN THE GS ADJUSTABLE
   RATE GOVERNMENT AGENCY FUND, GS CORE FIXED INCOME FUND, GS SHORT-TERM
   GOVERNMENT AGENCY FUND, GS SHORT DURATION TAX-FREE FUND OR GS GOVERNMENT
   AGENCY PORTFOLIO (FOR FINANCIAL INSTITUTIONS), AS WELL AS ALL OTHER NON-MONEY
   MARKET FUNDS, INCREASES THE LIKELIHOOD THAT THE SHAREHOLDER WILL BE REQUIRED
   TO REDEEM SHARES UNDER UNFAVORABLE MARKET CONDITIONS. IF SHARES ARE REDEEMED
   AT A DISADVANTAGEOUS TIME, THE VALUE OF THE FUND'S SHARES UPON REDEMPTION MAY
   BE LESS THAN THE PRICE AT WHICH THE FUND'S SHARES WERE PURCHASED. SINCE NONE
   OF THE FUNDS LISTED IN THIS PARAGRAPH IS A MONEY MARKET FUND OR MAINTAINS A
   CONSTANT NET ASSET VALUE PER SHARE, THE UNDERSIGNED MAY EXPERIENCE A LOSS OF
   PRINCIPAL ON ITS INVESTMENTS IN ANY SUCH FUND DURING ANY PARTICULAR PERIOD.

               SIGNATURE                       NAME (PRINT) AND TITLE (IF ANY)
               ---------                       ------------------------------- 

SIGN  ---------------------------------        -------------------------------
HERE
      ---------------------------------        ------------------------------- 

      ---------------------------------        ------------------------------- 
NUMBER OF SIGNATURES REQUIRED TO MAKE CHANGES TO THIS FORM: [_]
- --------------------------------------------------------------------------------
G. SIGNATURE GUARANTEE
                                                 AFFIX GUARANTEE STAMP HERE
   ---------------------------------
        SIGNATURE GUARANTEED BY

   ---------------------------------
         AUTHORIZED SIGNATURE
- --------------------------------------------------------------------------------
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF ANY OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                           PAGE
                                                                           ----
<S>                                                                        <C>
Summary...................................................................   3
Financial Highlights......................................................   8
Investment Objective and Policies.........................................   9
Investment Adviser........................................................  11
Other Investments and Practices...........................................  11
Risk Factors..............................................................  21
Investment Restrictions...................................................  22
Portfolio Turnover........................................................  22
Management................................................................  22
Dividends.................................................................  24
Net Asset Value...........................................................  24
Performance Information...................................................  25
Shares of the Trust.......................................................  26
Taxation..................................................................  27
Additional Information....................................................  28
Reports to Shareholders...................................................  29
Purchase of Institutional Shares..........................................  29
Exchange Privilege........................................................  30
Redemption of Institutional Shares........................................  31
Appendix A................................................................  A-1
Account Information Form
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                                 GS CORE FIXED
                                  INCOME FUND
                             INSTITUTIONAL SHARES
 
                                  MANAGED BY
                                  ---------- 

                                 GOLDMAN SACHS
                               ASSET MANAGEMENT,
                                AN AFFILIATE OF
 
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
                                  PROSPECTUS

                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                           GS CORE FIXED INCOME FUND
                             ADMINISTRATION SHARES
 
                                  MANAGED BY
 
                        GOLDMAN SACHS ASSET MANAGEMENT,
                       A SEPARATE OPERATING DIVISION OF
                             GOLDMAN, SACHS & CO.
 
                               ----------------
 
  GS Core Fixed Income Fund (the "Fund") is one fund in a family of funds
advised by Goldman Sachs Asset Management (the "Investment Adviser") or its
affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
  The Fund's investment objective is to provide investors with a total return
consisting of capital appreciation and income that exceeds the total return of
the Lehman Brothers Aggregate Bond Index (the "Index"). There can be no
assurance that the Fund will achieve its investment objective.
 
  The Fund will seek to achieve its objective by investing, under normal
market conditions, primarily in fixed income securities, including securities
issued or guaranteed by the U.S. Government or its agencies, authorities,
instrumentalities or sponsored enterprises, corporate securities, mortgage-
backed securities, and asset-backed securities. The fixed income securities in
which the Fund invests, at the time of investment, will be rated at least BBB
or Baa, or their equivalent rating, by any one of Standard & Poor's Ratings
Group ("Standard & Poor's"), Moody's Investors Service, Inc. ("Moody's") or
Fitch Investors Service, Inc. ("Fitch"), or if unrated by such rating
organizations, determined by the Fund's Investment Adviser to be of comparable
credit quality. The Fund will maintain, under normal market conditions, a
portfolio duration within a range equal to the duration of the Index plus or
minus one year.
 
  Goldman Sachs Asset Management, New York, New York, a separate operating
division of Goldman, Sachs & Co., serves as the Fund's investment adviser.
Goldman, Sachs & Co. serves as the Fund's distributor and transfer agent. The
Trust's custodian is State Street Bank and Trust Company.
 
                                                       (continued on next page)
 
ADMINISTRATION SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR
GUARANTEED OR ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION,
AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
RESERVE BOARD OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN ADMINISTRATION
SHARES OF THE FUND INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF
PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
                 The date of this Prospectus is March 1, 1995.
<PAGE>
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Administration Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from institutions ("Service Organizations") that hold,
directly or through an agent, Administration Shares for the benefit of their
customers, or Goldman, Sachs & Co. by calling the telephone number, or writing
to one of the addresses, listed below.
 
GOLDMAN SACHS TRUST                     GOLDMAN SACHS ASSET MANAGEMENT
4900 SEARS TOWER                        INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606                 ONE NEW YORK PLAZA
                                        NEW YORK, NEW YORK 10004
 
 
GOLDMAN, SACHS & CO.                    GOLDMAN, SACHS & CO.   
DISTRIBUTOR                             TRANSFER AGENT          
85 BROAD STREET                         4900 SEARS TOWER        
NEW YORK, NEW YORK 10004                CHICAGO, ILLINOIS 60606 
 
 
TOLL FREE (IN U.S.).....................800-621-2550
 
                                       2
<PAGE>
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Core Fixed Income Fund (the "Fund") is one fund in a family of funds
advised by Goldman Sachs Asset Management (the "Investment Adviser") or its
affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a total return
consisting of capital appreciation and income that exceeds the total return of
the Lehman Brothers Aggregate Bond Index (the "Index"). There can be no
assurance that the Fund will achieve its investment objective.
 
  The Fund will seek to achieve its objective by investing, under normal market
conditions, primarily in fixed income securities, including securities issued
or guaranteed by the U.S. Government or its agencies, authorities,
instrumentalities or sponsored enterprises, corporate securities, mortgage-
backed securities, and asset-backed securities. The Investment Adviser will
determine periodically the weighting of such securities based upon the
Investment Adviser's expectation for changes in interest rates, market
conditions, the credit quality of individual issuers and other factors it deems
relevant. The Investment Adviser will have access to the research of, and
proprietary technical models developed by, Goldman, Sachs & Co. ("Goldman
Sachs") and will apply quantitative and qualitative analysis in determining the
appropriate allocations among issuers and types of securities.
 
  The fixed income securities in which the Fund invests, at the time of
investment, will be rated at least BBB or Baa, or their equivalent rating, by
any one of Standard & Poor's, Moody's, or Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality. A security will be deemed to have met this requirement if it receives
the minimum required rating from at least one of such rating organizations even
though it has been rated below the minimum rating by one or more other rating
organizations.
 
  The Fund will maintain, under normal market conditions, a portfolio duration,
as defined under "Investment Objective and Policies," within a range equal to
the duration of the Index plus or minus one year. The Investment Adviser may,
however, decrease the Fund's average portfolio duration without limit if the
Investment Adviser believes that a shorter duration is warranted by the outlook
for interest rates or market conditions. There is no limitation as to the
Fund's maximum weighted average portfolio maturity or the maximum stated
maturity with respect to individual securities.
 
  The fixed income securities in which the Fund may invest include obligations
of foreign issuers and obligations denominated in U.S. dollars or foreign
currencies. The non-dollar denominated fixed income securities in which the
Fund may invest will be rated, at the time of investment, at least AA by
Standard & Poor's, Aa by Moody's, or AA by Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality. The Fund's investments in fixed income securities may also include
Short-Term Investments (as defined below), convertible securities, custody
receipts and municipal securities.
 
  It is expected that the Fund will employ certain interest rate management
techniques. These techniques will be used both to hedge the interest rate risks
associated with the Fund's portfolio securities
 
                                       3
<PAGE>
 
and to seek to increase total return. Such techniques include options, futures
contracts, options on futures contracts, interest rate and mortgage swaps,
interest rate caps, floors and collars, forward commitments, lending portfolio
securities, repurchase agreements and mortgage dollar rolls. The Fund may also
engage in certain currency management techniques, including futures and options
on currencies, forward foreign currency exchange contracts and currency swaps,
but only for hedging purposes.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Asset Management,
a separate operating division of Goldman Sachs, serves as the Fund's investment
adviser. In this capacity, the Investment Adviser provides investment advisory
and administrative services and receives from the Fund a monthly fee equal on
an annual basis to 0.40% of the Fund's average daily net assets. Goldman Sachs
is registered with the Securities and Exchange Commission ("SEC") as an
investment adviser. See "Investment Adviser" and "Management--Investment
Adviser."
 
                PURCHASE AND REDEMPTION OF ADMINISTRATION SHARES
 
  It is expected that all purchasers of Administration Shares of the Fund will
be Service Organizations or their nominees. Customers of Service Organizations
may invest in Administration Shares only through their Service Organizations.
Administration Shares of the Fund may be purchased by Service Organizations
through Goldman Sachs at the current net asset value per share without the
imposition of a sales load. The Fund does not have any minimum purchase or
account requirements with respect to Administration Shares. A Service
Organization may, however, impose a minimum amount for initial and subsequent
investments in Administration Shares, and may establish other requirements such
as a minimum account balance. See "Purchase of Administration Shares." The Fund
will redeem its Administration Shares upon request of a shareholder on any
Business Day at the net asset value next determined after receipt of such
request in proper form. See "Redemption of Administration Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
inquiries from Service Organizations. See "Management--Distributor and Transfer
Agent."
 
                                  RISK FACTORS
 
  YIELD AND MARKET RISK. The Fund's investments in fixed income securities
entail certain risks, including adverse income and principal value fluctuation
associated with general economic conditions affecting the fixed income
securities market, as well as adverse interest rate changes and volatility of
yields. Since the Fund invests in securities with a range of maturities, the
volatility of its net asset value may vary (though not necessarily
proportionately) with the average duration of its portfolio. The inherent
volatility risk is such that, during any particular period, there may be a loss
of principal. The net asset value of the shares of the Fund will change in
response to fluctuations in interest rates. When interest rates decline, the
market value of the Fund's fixed income securities and, therefore, the Fund's
net asset
 
                                       4
<PAGE>
 
value, can be expected to rise. Conversely, when interest rates rise, the
market value of the Fund's fixed income securities and, therefore, the Fund's
net asset value can be expected to decline.
 
  COMPARISON TO INDEX. The Fund is not an "index fund" designed to match the
performance of the Index by investing in the securities represented in the
Index in similar proportions to their representation in the Index. Thus, the
Fund is not required to hold any particular portion of the issuers or issues
comprising the Index or to hold them in any particular weightings. As a result,
the Fund's portfolio is likely to be less diverse than and may include
securities not included in the Index. The Fund's performance may also be
affected by its use of derivative instruments and other investment practices.
In addition, the Fund will bear certain expenses which are not considered when
computing the return on the Index. The smaller the size of the Fund, the
greater the effect such expenses would have upon the Fund's performance in
comparison to the Index. Lehman Brothers Inc. may change the composition of the
Index in the future, which may affect the Fund's ability to achieve its
investment objective.
 
  DEFAULT RISK. Investments in fixed income securities are subject to the risk
that the issuer could default on its obligations and the Fund could sustain
losses on such investments. Fixed income securities rated BBB or Baa are
considered medium-grade obligations with speculative characteristics, and
adverse economic conditions or changing circumstances may weaken their issuers'
capability to pay interest and repay principal. Also, to the extent that the
rating assigned to a security in the Fund's portfolio is downgraded by a rating
organization, the market price and liquidity of such security may be adversely
affected. See Appendix A to the Additional Statement for a description of the
securities ratings of Moody's, Standard & Poor's and Fitch.
 
  MORTGAGE AND ASSET BACKED SECURITIES. The Fund's investments in mortgage-
backed and asset-backed securities are often subject to more rapid repayment
than their stated maturity date would indicate as a result of the pass-through
of prepayments of principal on the underlying loans. During periods of
declining interest rates, prepayment of loans underlying mortgage-backed and
asset-backed securities can be expected to accelerate, and thus impair the
Fund's ability to reinvest the returns of principal at comparable yields.
Accordingly, the market values of such securities will vary with changes in
market interest rates generally and in yield differentials among various kinds
of U.S. Government securities and other mortgage-backed and asset-backed
securities. Asset-backed securities present certain risks that are not
presented by mortgage-backed securities because asset-backed securities
generally do not have the benefit of the security interest in collateral that
is comparable to mortgage assets. There is the possibility that, in some cases,
recoveries on repossessed collateral may not be available to support payments
on these securities.
 
  FOREIGN SECURITIES. The Fund may invest in securities of foreign issuers. An
investment in foreign securities may involve risks not present in domestic
investments. Foreign issuers may not be subject to accounting standards or
governmental supervision comparable to that applicable to domestic issuers and
there may be less publicly available information about their operations.
Foreign markets generally provide less liquidity (and thus potentially greater
price volatility), and typically provide fewer regulatory protections for
investors. Foreign securities can be affected by political and financial
instability abroad.
 
  NON-DOLLAR INVESTMENTS. The performance of investments in non-dollar
securities will depend on, among other things, the strength of the foreign
currency against the dollar and the interest rate environment in the country
issuing the foreign currency in which the instrument is denominated. A rise in
 
                                       5
<PAGE>
 
interest rates in a foreign country or a decline in the U.S. dollar value of a
foreign currency relative to the U.S. dollar generally can be expected to
depress the value of the Fund's securities to the extent that such securities
are issued in the country with rising interest rates or denominated in the
declining currency.
 
  OTHER INVESTMENTS AND PRACTICES. The Fund may engage in certain investment
practices and enter into transactions in certain derivative instruments. Such
investment practices and instruments include futures contracts, options and
options on futures contracts, interest rate, mortgage and currency swaps and
interest rate caps, floors and collars, forward commitments, lending portfolio
securities, repurchase agreements and mortgage dollar rolls. The Fund may enter
into these transactions, except for transactions with respect to currencies,
for hedging and speculative purposes (to seek to increase total return). The
Fund may enter into transactions in derivative instruments with respect to
currencies only for hedging purposes. The Fund's use of such investment
practices and derivative instruments involves certain risks, including a
possible lack of correlation between changes in the value of a hedging
instrument and the portfolio security being hedged. The Fund could also be
exposed to a risk of loss if it is unable to close out its derivative positions
because of an illiquid secondary market.
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, and its divisions
and affiliates (including the Investment Adviser), partners and officers, in
the investment activities and business operations of the Fund may present
certain conflicts of interest, as described under "Management--Investment
Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends to declare a daily dividend. Such dividends will accrue to
shareholders of record as of 3:00 p.m., Chicago time, and will be paid monthly.
Over the course of the fiscal year, dividends accrued and paid will constitute
all or substantially all of the Fund's net investment income. From time to time
a portion of such dividends may constitute a return of capital. The Fund also
intends that all or substantially all net realized long-term and short-term
capital gains, if any, after offset by any available capital loss carryforwards
from prior taxable years, will be declared as a dividend and paid at least
annually. Recordholders of Administration Shares will receive dividends in
additional Administration Shares of the Fund or may elect to receive cash as
described under "Dividends."
 
                              ADMINISTRATION PLAN
 
  The Trust, on behalf of the Fund, has adopted an Administration Plan with
respect to the Administration Shares of the Fund which authorizes the Fund to
compensate Service Organizations for providing account administration services
to their customers who are the beneficial owners of such Shares. The Trust, on
behalf of the Fund, will enter into agreements with each Service Organization
which will provide for compensation to the Service Organization in an amount up
to 0.25% (on an annualized basis) of the average daily net assets of the
Administration Shares of the Fund attributable to or held in the name of the
Service Organization for its customers. See "Administration Plan."
 
                                       6
<PAGE>
 
 
                               FEES AND EXPENSES
                            (ADMINISTRATION SHARES)*
<TABLE>
<CAPTION>
                                                                   GS CORE FIXED
                                                                    INCOME FUND
                                                                   -------------
<S>                                                                <C>
SHAREHOLDER TRANSACTION EXPENSES:
    Maximum Sales Load Imposed on Purchases.......................     None
    Maximum Sales Load Imposed on Reinvestment Dividends..........     None
    Redemption Fees...............................................     None
    Exchange Fees.................................................     None
ANNUAL FUND OPERATING EXPENSES:
(AS A PERCENTAGE OF AVERAGE DAILY NET ASSETS)
    Management Fees...............................................     0.40%
    Account Administration Fees...................................     0.25%**
    Other Expenses (after expense limitation).....................     0.05%***
                                                                       ----
    TOTAL FUND OPERATING EXPENSES (AFTER EXPENSE LIMITATION)......     0.70%***
                                                                       ====
</TABLE>
 
EXAMPLE:
 
<TABLE>
<CAPTION>
                                                 1 YEAR 3 YEARS 5 YEARS 10 YEARS
                                                 ------ ------- ------- --------
<S>                                              <C>    <C>     <C>     <C>
You would pay the following expenses on a hypo-
 thetical $1,000 investment, assuming (1) a 5%
 annual return and (2) redemption at the end of
 each time period..............................   $ 7     $22     $39     $87
</TABLE>
- --------
  * The information set forth in the foregoing table and hypothetical example
    relates only to Administration Shares of the Fund. See "Shares of the
    Trust." Institutional Shares and Service Shares of the Fund are subject to
    different fees and expenses. Institutional Shares are not subject to any
    administration or service fees. Service Shares are subject to a service fee
    of up to 0.50% of average daily net assets. All other expenses related to
    Institutional Shares and Service Shares are the same as for Administration
    Shares.
 ** Service Organizations (other than broker-dealers) may charge other fees to
    their customers who are beneficial owners of Administration Shares in
    connection with the customer accounts. See "Administration Plan."
*** The Investment Adviser voluntarily agreed to reduce or limit certain "Other
    Expenses" of the Fund (excluding advisory fees, payments to Service
    Organizations, taxes, interest and brokerage and litigation,
    indemnification and other extraordinary expenses) to the extent such
    expenses exceeded 0.05% per annum of the Fund's average daily net assets.
    If the Investment Adviser had not agreed to reduce or otherwise limit
    certain "Other Expenses" of the Fund, the Fund's other expenses and total
    operating expenses attributable to Administration Shares of the Fund would
    have been 1.06% and 1.71%, on an annualized basis, respectively. See
    "Management--Investment Adviser."
 
  The purpose of the foregoing table is to assist investors in understanding
the various costs and expenses of the Fund that an investor in the Fund will
bear directly or indirectly. The costs and expenses included in the table and
hypothetical example above, which are based on amounts that would have been
incurred for the fiscal year ended October 31, 1994 had Administration Shares
been issued, should not be considered as representative of past or future
expenses. Actual fees and expenses may be greater or less than those indicated.
Moreover while the example assumes a 5% annual return, the Fund's actual
performance will vary and may result in an actual return greater or less than
5%. See "Management" and "Administration Plan."
 
 
                                       7
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
 
          SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD
 
  The following data with respect to Institutional Shares of the Fund
outstanding during the period indicated below has been audited by Arthur
Andersen LLP, independent public accountants, as indicated in their report
incorporated by reference and attached to the Additional Statement from the
Fund's annual report to shareholders for the period ended October 31, 1994
(the "Annual Report"). This information should be read in conjunction with the
financial statements and related notes incorporated by reference and attached
to the Additional Statement. The Annual Report also contains performance
information and is available upon request and without charge by writing to any
of the addresses on the inside cover of this Prospectus.
 
<TABLE>
<CAPTION>
                             INCOME FROM INVESTMENT                                                                     
                                   OPERATIONS                                                                           
                           ---------------------------                                                                  
                                                        DISTRI-                              RATIO                      
                                                        BUTIONS                                OF                       
                                                           TO                       RATIO     NET                       
                                      NET      TOTAL     SHARE-    NET                OF    INVEST-                     
                                    REALIZED    LOSS    HOLDERS   ASSET              NET      MENT               NET    
                    NET               AND       FROM      FROM    VALUE            EXPENSES  INCOME   PORT-     ASSETS  
                   ASSET     NET   UNREALIZED INVEST-     NET       AT                TO       TO     FOLIO     AT END  
                 VALUE AT  INVEST-  LOSS ON     MENT    INVEST-    END             AVERAGE  AVERAGE   TURN-       OF    
                 BEGINNING  MENT    INVEST-    OPERA-     MENT      OF     TOTAL     NET      NET     OVER      PERIOD  
                 OF PERIOD INCOME   MENTS(a)   TIONS     INCOME   PERIOD RETURN(b)  ASSETS   ASSETS  RATE(c)  (IN 000'S)
                 --------- ------- ---------- --------  --------  ------ --------- -------- -------- -------  ----------
FOR THE PERIOD JANUARY 5, 1994 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,                                         
- -------------------------------------------------------------------------------- 
<S>              <C>       <C>     <C>        <C>       <C>       <C>    <C>       <C>      <C>      <C>      <C>       
1994-                                                                                                                   
Institutional                                                                                                           
Shares..........  $10.00   $0.4648  $(0.7617) $(0.2969) $(0.4648) $9.24    (3.00)% 0.45%(d) 6.48%(d) 288.25%   $24,508  
<CAPTION>                                                                                                                         

                     RATIOS ASSUMING          
                       NO EXPENSE         
                       LIMITATIONS        
                    -----------------     
                              RATIO       
                                OF        
                               NET        
                     RATIO   INVEST-      
                       OF      MENT       
                    EXPENSES  INCOME      
                       TO       TO        
                    AVERAGE  AVERAGE     
                      NET      NET        
                     ASSETS   ASSETS      
                    -------- --------     
FOR THE PERIOD JANUARY 5, 1994 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
- -------------------------------------------------------------------------------
<S>                 <C>       <C>      
1994-               
Institutional     
Shares..........    1.46%(d)  5.47%(d)       
</TABLE> 

- ----------
(a) Includes balancing effect of calculating per share amounts.
(b) Assumes investment at net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(c) Includes effect of mortgage dollar roll transactions.
(d) Annualized.
 
                                       8
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a total return
consisting of capital appreciation and income that exceeds the total return of
the Lehman Brothers Aggregate Bond Index (the "Index"). There can be no
assurance that the Fund will achieve its investment objective.
 
  The Fund will seek to achieve its objective by investing, under normal market
conditions, at least 65% of its total assets in fixed income securities,
including securities issued or guaranteed by the U.S. Government or its
agencies, authorities, instrumentalities or sponsored enterprises, corporate
securities, mortgage-backed securities, and asset-backed securities. A number
of investment strategies will be used to achieve the Fund's investment
objective, including market sector selection, determination of yield curve
exposure, and issuer selection. In addition, the Investment Adviser will
attempt to take advantage of pricing inefficiencies in the fixed income
markets. Market sector selection is the underweighting or overweighting of one
or more of the five market sectors (i.e., U.S. treasuries, U.S. government
agencies, corporate securities, mortgage-backed securities and asset-backed
securities) in which the Fund primarily invests. The decision to overweight or
underweight a given market sector is based on expectations of future yield
spreads between different sectors. Yield curve exposure strategy consists of
overweighting or underweighting different maturity sectors to take advantage of
the shape of the yield curve. Issuer selection is the purchase and sale of
corporate securities based on a corporation's current and expected credit
standing. To take advantage of price discrepancies between securities resulting
from supply and demand imbalances or other technical factors, the Fund may
simultaneously purchase and sell comparable, but not identical, securities. The
Investment Adviser will have access to the research of, and proprietary
technical models developed by, Goldman Sachs and will apply quantitative and
qualitative analysis in determining the appropriate allocations among the
categories of issuers and types of securities.
 
  The fixed income securities in which the Fund invests, at the time of
investment, will be rated at least BBB or Baa, or their equivalent ratings, by
any one of Standard & Poor's, Moody's, or Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality. A security will be deemed to have met this requirement if it receives
the minimum required rating from at least one of such rating organizations even
though it has been rated below the minimum rating by one or more other rating
organizations. If a fixed income security that at the time of purchase
satisfies the Fund's minimum rating criteria is subsequently downgraded below
such rating criteria, the Fund will not be required to dispose of such
security. If a downgrading occurs, the Investment Adviser will consider what
action, including the sale of such security, is in the best interest of the
Fund. In most instances, the Fund expects to dispose of a downgraded security
within a reasonable time after such downgrading. Fixed income securities rated
BBB by Standard & Poor's or Fitch or Baa by Moody's are considered medium grade
obligations with speculative characteristics, and adverse economic conditions
or changing circumstances may weaken capacity to pay interest and repay
principal. See Appendix A to the Additional Statement for a description of the
securities ratings.
 
  PORTFOLIO DURATION. Under normal market conditions, the Fund will maintain a
dollar weighted average portfolio duration within a range equal to the duration
of the Index plus or minus one year. The Investment Adviser may, however,
decrease the Fund's average duration without limit if the Investment Adviser
believes that a shorter duration is warranted by its outlook for interest rates
or market conditions. Duration represents the weighted average maturity of
expected cash flows on a debt obligation, discounted to present value. The
longer the duration of a debt obligation, the more sensitive its value is to
changes in interest rates. Maturity measures only the time until final payment
is due on a bond or other debt security; it takes no account of the pattern of
a security's cash flows over time. In computing the duration of the portfolio
and the Index, the duration of debt obligations that are subject to prepayment
or
 
                                       9
<PAGE>
 
redemption by the issuer are determined based upon estimates of the rate and
timing of prepayment or redemption. There is no limitation as to the Fund's
maximum weighted average portfolio maturity or the maximum stated maturity with
respect to individual securities.
 
  The Fund may use various techniques to shorten or lengthen the dollar
weighted average duration of its portfolio, including the acquisition of
securities at a premium or discount, and entering into transactions in options,
futures contracts, options on futures, interest rate and mortgage swaps and
interest rate caps, floors and collars.
 
  THE INDEX. The Index currently includes U.S. Government securities and fixed
rate, publicly issued, U.S. dollar denominated fixed-income securities rated at
least BBB or Baa or in their equivalent ratings category by Standard & Poor's,
Moody's or Fitch. The securities currently included in the Index have at least
one year remaining to maturity; have an outstanding principal amount of at
least $100 million; and are issued by the following types of issuers, with each
category receiving a different weighting in the Index: U.S. Treasury; agencies,
authorities or instrumentalities of the U.S. Government; issuers of mortgage-
backed securities; utilities; industrial issuers; financial institutions;
foreign issuers; and issuers of asset-backed securities.
 
  The Lehman Brothers Aggregate Bond Index is a trademark of Lehman Brothers.
Inclusion of a security in the Index does not imply an opinion by Lehman
Brothers as to its attractiveness or appropriateness for investment. Although
Lehman Brothers obtains factual information used in connection with the Index
from sources which it considers reliable, Lehman Brothers claims no
responsibility for the accuracy, completeness or timeliness of such information
and has no liability to any person for any loss arising from results obtained
from the use of the index data.
 
  TEMPORARY AND OTHER INVESTMENTS. When in the judgment of the Investment
Adviser market conditions warrant, the Fund may for temporary defensive
purposes hold part or all of its assets in cash (including foreign currencies),
cash equivalents, such as certificates of deposit, commercial paper, time
deposits and bankers' acceptances issued by a bank the unsecured commercial
paper of which is rated A-1 by Standard & Poor's or P-1 by Moody's, short-term
securities issued or guaranteed as to principal and interest by the U.S.
Government, its agencies or instrumentalities and repurchase agreements
collateralized by such instruments ("Short-Term Investments").
 
  To the extent consistent with its investment objective, the Fund's
investments in fixed income securities may also include Short-Term Investments,
foreign securities, convertible securities, custody receipts and municipal
securities.
 
  An investment in foreign securities may involve risks not present in domestic
investments. Foreign issuers may not be subject to accounting standards or
governmental supervision comparable to that applicable to domestic issuers and
there may be less publicly available information about their operations.
Foreign markets generally provide less liquidity (and thus potentially greater
price volatility), and typically provide fewer regulatory protections for
investors. Foreign securities can be affected by political and financial
instability abroad.
 
  The Fund may invest up to 25% of its net assets in obligations of domestic
and foreign issuers which are denominated in currencies other than the U.S.
dollar. The non-dollar denominated fixed income securities in which the Fund
may invest will be rated, at the time of investment, at least AA by Standard &
Poor's, Aa by Moody's, or AA by Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality.
 
                                       10
<PAGE>
 
  The performance of investments in non-dollar denominated securities will
depend on, among other things, the strength of the foreign currency against the
dollar and the interest rate environment in the country issuing the foreign
currency in which the instrument is denominated. Absent events which could
otherwise affect the value of non-dollar securities (such as a change in the
political climate or an issuer's credit quality), appreciation in the value of
the foreign currencies in which the Fund's portfolio securities may be
denominated generally can be expected to increase the U.S. dollar value of the
Fund's non-dollar securities. A rise in foreign interest rates or a decline in
the U.S. dollar value of foreign currencies relative to the U.S. dollar
generally can be expected to depress the value of the Fund's non-dollar
denominated securities. The Fund may engage in certain currency management
techniques, including options and futures on currencies, forward foreign
currency exchange contracts and currency swaps, to hedge the Fund's investments
in non-U.S. dollar denominated securities.
 
  INTEREST RATE TECHNIQUES. It is expected that the Fund will employ certain
interest rate management techniques. These techniques will be used both to
hedge the interest rate risks associated with the Fund's portfolio securities
and to seek to increase total return. Such techniques include options, futures
contracts, options on futures contracts, interest rate and mortgage swaps,
interest rate caps, floors and collars, forward commitments, lending portfolio
securities, repurchase agreements and mortgage dollar rolls.
 
  NON-FUNDAMENTAL POLICIES. Except as otherwise stated under "Investment
Restrictions," the Fund's investment objective and policies are not fundamental
and may be changed without a vote of shareholders. If there is a change in the
Fund's investment objective, shareholders should consider whether the Fund
remains an appropriate investment in light of their then current financial
positions and needs. There can be no assurance that the Fund will be successful
in achieving its investment objective. An investment in shares of the Fund does
not constitute a complete investment program. Investors may wish to complement
an investment in the Fund with other types of investments.
 
                               INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Asset Management, a separate
operating division of Goldman Sachs. The management services provided by the
Investment Adviser are subject to the general supervision of the Trust's Board
of Trustees. The Investment Adviser serves a wide range of clients including
private and public pension funds, endowments, foundations, banks, thrifts,
insurance companies, corporations, and private investors and family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and expertise of
Goldman Sachs, whose investment research effort is one of the largest in the
industry. The in-depth information and analyses generated by Goldman Sachs'
research analysts, economists and portfolio strategists are available to the
Investment Adviser.
 
                        OTHER INVESTMENTS AND PRACTICES
 
U.S. GOVERNMENT SECURITIES
 
  U.S. Government securities are obligations issued or guaranteed by the U.S.
Government or its agencies, authorities, instrumentalities or sponsored
enterprises. Some U.S. Government securities, such
 
                                       11
<PAGE>
 
as Treasury bills, notes and bonds, which differ only in their interest rates,
maturities and times of issuance, are supported by the full faith and credit of
the United States of America. Others, such as obligations issued or guaranteed
by U.S. Government agencies, authorities, instrumentalities or sponsored
enterprises are supported either by (a) the full faith and credit of the U.S.
Government (such as securities of the Small Business Administration), (b) the
right of the issuer to borrow from the Treasury (such as securities of the
Federal Home Loan Banks), (c) the discretionary authority of the U.S.
Government to purchase the agency's obligations (such as securities of the
Federal National Mortgage Association), or (d) only the credit of the issuer.
No assurance can be given that the U.S. Government will continue to provide
financial support to U.S. Government agencies, authorities, instrumentalities
or sponsored enterprises in the future.
 
  Securities guaranteed as to principal and interest by the U.S. Government,
its agencies, authorities, instrumentalities or sponsored enterprises are
deemed to include (a) securities for which the payment of principal and
interest is backed by a guaranty of the U.S. Government or its agencies,
authorities, instrumentalities or sponsored enterprises and (b) participations
in loans made to foreign governments or their agencies that are so guaranteed.
The secondary market for certain of these participations is limited. Such
participations may therefore be regarded as illiquid.
 
  The Fund may also invest in separately traded principal and interest
components of securities guaranteed or issued by the U.S. Government or its
agencies, instrumentalities or sponsored enterprises if such components are
traded independently under the Separate Trading of Registered Interest and
Principal of Securities program ("STRIPS") or any similar program sponsored by
the U.S. Government. The Fund may invest in U.S. Government securities which
are zero coupon or deferred interest securities.
 
MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in mortgage-backed securities. Mortgage-backed securities
represent direct or indirect participations in or obligations collateralized by
and payable from mortgage loans secured by real property. Each mortgage pool
underlying mortgage-backed securities will consist of mortgage loans evidenced
by promissory notes secured by first mortgages or first deeds of trust or other
similar security instruments creating a first lien on owner and non-owner
occupied one-unit to four-unit residential properties, multifamily residential
properties, agricultural properties, commercial properties and mixed use
properties.
 
  MORTGAGE PASS-THROUGH SECURITIES. The Fund may invest in mortgage pass-
through securities, which are fixed or adjustable rate mortgage-backed
securities that provide for monthly payments that are a "pass-through" of the
monthly interest and principal payments (including any prepayments) made by the
individual borrowers on the pooled mortgage loans, net of any fees or other
amounts paid to any guarantor, administrator and/or servicer of the underlying
mortgage loans.
 
  MULTIPLE CLASS MORTGAGE-BACKED SECURITIES AND COLLATERALIZED MORTGAGE
OBLIGATIONS. The Fund may invest in collateralized mortgage obligations
("CMOs"), which are multiple class mortgage-backed securities. CMOs provide an
investor with a specified interest in the cash flow from a pool of underlying
mortgages or of other mortgage-backed securities. CMOs are issued in multiple
classes, each with a specified fixed or adjustable interest rate and a final
scheduled distribution date. In most cases, payments of principal are applied
to the CMO classes in the order of their respective stated maturities, so that
no principal payments will be made on a CMO class until all other classes
having an earlier stated maturity date are paid in full. Sometimes, however,
CMO classes are "parallel pay" (i.e., payments of principal are made to two or
more classes concurrently).
 
                                       12
<PAGE>
 
  STRIPPED MORTGAGE-BACKED SECURITIES. The Fund may also invest in stripped
mortgage-backed securities ("SMBS"), which are derivative multiple class
mortgage-backed securities. SMBS are usually structured with two classes that
receive different proportions of the interest and principal distributions from
a pool of mortgage loans. If the underlying mortgage loans experience greater
than anticipated prepayments of principal, the Fund may fail to fully recoup
its initial investment in these securities. Although the market for such
securities is increasingly liquid, the Investment Adviser, in accordance with
guidelines and standards adopted by the Board of Trustees, may determine that
government issued SMBS are not readily marketable. If so, these securities will
be considered illiquid for purposes of the Fund's limitation on investments in
illiquid securities.
 
  AGENCY MORTGAGE SECURITIES. The Fund may invest in mortgage-backed securities
issued or guaranteed by the U.S. Government or any of its agencies,
instrumentalities or sponsored enterprises, including but not limited to
Government National Mortgage Association ("Ginnie Mae"), Federal National
Mortgage Association ("Fannie Mae") and Federal Home Loan Mortgage Corporation
("Freddie Mac"). Ginnie Mae securities are backed by the full faith and credit
of the U.S. Government, which means that the U.S. Government guarantees that
the interest and principal will be paid when due. Fannie Mae securities and
Freddie Mac securities are not backed by the full faith and credit of the U.S.
Government; however, these enterprises have the ability to obtain financing
from the U.S. Treasury. There are several types of agency mortgage securities
currently available, including, but not limited to, guaranteed mortgage pass-
through certificates and multiple class securities.
 
  PRIVATELY ISSUED MORTGAGE-BACKED SECURITIES. The Fund may also invest in
mortgage-backed securities issued by trusts or other entities formed or
sponsored by private originators of and institutional investors in mortgage
loans and other non-governmental entities (or representing custodial
arrangements administered by such institutions). These private originators and
institutions include savings and loan associations, mortgage bankers,
commercial banks, insurance companies, investment banks and special purpose
subsidiaries of the foregoing. Privately issued mortgage-backed securities are
generally backed by pools of conventional (i.e., non-government guaranteed or
insured) mortgage loans. Since such mortgage-backed securities normally are not
guaranteed by an entity having the credit standing of Ginnie Mae, Fannie Mae or
Freddie Mac, in order to receive a high quality rating, they normally are
structured with one or more types of "credit enhancement." Such credit
enhancements fall generally into two categories: (1) liquidity protection and
(2) protection against losses resulting after default by a borrower and
liquidation of the collateral. Liquidity protection refers to the providing of
cash advances to holders of mortgage-backed securities when a borrower on an
underlying mortgage fails to make its monthly payment on time. Protection
against losses resulting after default and liquidation is designed to cover
losses resulting when, for example, the proceeds of a foreclosure sale are
insufficient to cover the outstanding amount on the mortgage. Such protection
may be provided through guarantees, insurance policies or letters of credit,
through various means of structuring the transaction or through a combination
of such approaches.
 
ASSET-BACKED SECURITIES
 
  The Fund may invest in asset-backed securities, which represent
participations in, or are secured by and payable from, pools of assets such as
motor vehicle installment sale contracts, installment loan contracts, leases on
various types of real and personal property, receivables from revolving credit
(credit card) agreements and other categories of receivables. Such asset pools
are securitized through the use of privately-formed trusts or special purpose
entities. Payments or distributions of principal and interest may be guaranteed
up to certain amounts and for a certain time period by a letter of credit or a
pool insurance policy issued by a financial institution unaffiliated with the
trust or corporation, or other credit enhancements may be present. Asset-backed
securities present credit risks that are not presented by mortgage-backed
securities because asset-backed securities generally do not have the benefit of
a security interest in collateral that is comparable to mortgage assets.
 
                                       13
<PAGE>
 
CORPORATE DEBT OBLIGATIONS
 
  The Fund may invest in corporate debt obligations, including obligations of
industrial, utility and financial issuers. In addition to obligations of
corporations, corporate debt obligations include bank obligations and zero
coupon securities, issued by financial institutions and corporations. Corporate
debt obligations are subject to the risk of an issuer's inability to meeting
principal and interest payments on the obligations and may also be subject to
price volatility due to such factors as market interest rates, market
perception of the creditworthiness of the issuer and general market liquidity.
 
MUNICIPAL SECURITIES
 
  Municipal securities consist of bonds, notes and other instruments issued by
or on behalf of states, territories and possessions of the United States
(including the District of Columbia) and their political subdivisions, agencies
or instrumentalities, the interest on which is exempt from regular federal
income tax. Municipal securities are often issued to obtain funds for various
public purposes and also include "private activity bonds" or industrial
development bonds, which are issued by or on behalf of public authorities to
obtain funds for privately operated facilities. Due to their tax exempt status,
the yields and market prices of municipal securities may be adversely affected
by changes in tax rates and policies, which may have less effect on the market
for taxable fixed income securities. Moreover, certain types of municipal
securities, such as housing revenue bonds, involve prepayment risks which could
affect the yield on such securities. Investments in municipal securities are
subject to the risk that the issuer could default on its obligations. Such a
default could result from the inadequacy of the sources of revenues from which
interest and principal payments are to be made or the assets collateralizing
such obligations. Revenue bonds, including private activity bonds, are backed
only by specific assets or revenue sources and not by the full faith and credit
of the governmental issuer. The Fund's distributions to shareholders of any
income it earns from Municipal Securities will not be tax-exempt.
 
CUSTODIAL RECEIPTS
 
  The Fund may acquire custodial receipts in respect of securities issued or
guaranteed as to principal and interest by the U.S. Government, its agencies,
authorities, instrumentalities or sponsored enterprises. Such custodial
receipts evidence ownership of future interest payments, principal payments or
both on certain notes or bonds issued by the U.S. Government or its agencies or
instrumentalities. For certain securities law purposes, custodial receipts are
not considered obligations of the U.S. Government.
 
CONVERTIBLE SECURITIES
 
  Convertible securities may include corporate notes or preferred stock but are
ordinarily a long-term debt obligation of the issuer convertible at a stated
exchange rate into common stock of the issuer. As with all debt securities, the
market value of convertible securities tends to decline as interest rates
increase and, conversely, to increase as interest rates decline. Convertible
securities generally offer lower interest or dividend yields than non-
convertible securities of similar quality. However, when the market price of
the common stock underlying a convertible security exceeds the conversion
price, the price of the convertible security tends to reflect the value of the
underlying common stock. As the market price of the underlying common stock
declines, the convertible security tends to trade increasingly on a yield
basis, and thus may not depreciate to the same extent as the underlying common
stock. Convertible securities in which the Fund invests will be subject to the
same rating criteria as its other investments in fixed income securities.
 
INVERSE FLOATING RATE SECURITIES
 
  The Fund may invest in "leveraged" inverse floating rate debt instruments
("inverse floaters"). The interest rate on an inverse floater resets in the
opposite direction from the market rate of interest to which
 
                                       14
<PAGE>
 
the inverse floater is indexed. An inverse floater may be considered to be
leveraged to the extent that its interest rate varies by a magnitude that
exceeds the magnitude of the change in the index rate of interest. The higher
the degree of leverage of an inverse floater, the greater the volatility of its
market value.
 
OPTIONS ON SECURITIES AND SECURITIES INDICES
 
  WRITING COVERED OPTIONS. The Fund may write (sell) covered call and put
options on any securities in which it may invest or on any securities index
composed of securities in which it may invest. A call option grants the
purchaser the right to buy, and obligates the writer to sell, the underlying
security at the exercise price if the option is exercised during the option
period. A put option grants the purchaser the right to sell, and obligates the
writer to buy, the underlying security at the exercise price if the option is
exercised during the option period. All call options written by the Fund are
covered, which means that the Fund will own the securities subject to the
option so long as the option is outstanding. All put options written by the
Fund are covered, which means that the Fund would have deposited with its
custodian cash, or high grade, liquid debt securities with a value at least
equal to the exercise price of the put option. Call and put options written by
the Fund will also be considered to be covered to the extent that the Fund's
liabilities under such options are wholly or partially offset by its rights
under call and put options purchased by the Fund.
 
  PURCHASING OPTIONS. The Fund may purchase put and call options on any
securities in which it may invest or on any securities index composed of
securities in which it may invest.
 
  YIELD CURVE OPTIONS. The Fund may purchase and write options on the yield
"spread," or yield differential between two securities. Such transactions are
referred to as "yield curve" options. In contrast to other types of options, a
yield curve option is based on the difference between the yields of designated
securities, rather than the prices of the individual securities, and is settled
through cash payments. Accordingly, a yield curve option is profitable to the
holder if this differential widens (in the case of a call) or narrows (in the
case of a put), regardless of whether the yields of the underlying securities
increase or decrease. All yield curve options written by the Fund will be
covered in the manner described under "Writing Covered Options."
 
  RISKS ASSOCIATED WITH OPTIONS TRANSACTIONS. The Fund may purchase and write
such options on securities and indices that are listed on a national or foreign
securities exchange or traded in the over-the-counter market. There is no
assurance that a liquid secondary market on a domestic or foreign options
exchange will exist for any particular exchange-traded option or at any
particular time. If the Fund is unable to effect a closing purchase transaction
with respect to covered options it has written, the Fund will not be able to
sell the underlying securities or dispose of assets held in a segregated
account until the options expire or are exercised. Similarly, if the Fund is
unable to effect a closing sale transaction with respect to options it has
purchased, it would have to exercise the options in order to realize any profit
and will incur transaction costs upon the purchase or sale of the underlying
securities. In a closing purchase or sale transaction, the Fund acquires a
position that offsets and cancels an option position then held by the Fund.
 
  The Fund may purchase and sell options traded over-the-counter with broker-
dealers who make markets in these options. The ability to terminate over-the-
counter options is more limited than with exchange-traded options and may
involve the risk that broker-dealers participating in such transactions will
not fulfill their obligations. Until such time as the staff of the SEC changes
its position, the Fund will treat purchased over-the-counter options and all
assets used to cover written over-the-counter options as illiquid securities.
However, for options written with primary dealers in U.S. Government securities
pursuant to an agreement requiring a closing purchase transaction at a formula
price, the amount of illiquid securities may be calculated with reference to a
formula approved by the SEC staff.
 
                                       15
<PAGE>
 
  The writing and purchase of options is a highly specialized activity which
involves investment techniques and risks different from those associated with
ordinary portfolio securities transactions. The successful use of options for
hedging purposes depends in part on the Investment Adviser's ability to predict
future price fluctuations and the degree of correlation between the options and
securities markets. If the Investment Adviser is incorrect in its determination
of the correlation between the securities or indices on which the options are
written and purchased and the securities in the Fund's investment portfolio, or
with respect to yield curve options, the direction or the extent of the
movement of the yield differential, the investment performance of the Fund will
be less favorable than it would have been in the absence of such option
transactions. The Fund pays brokerage commissions or spreads in connection with
its options transactions. The writing of options could significantly increase
the Fund's portfolio turnover rate.
 
FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS
 
  To hedge against changes in interest rates, securities prices or currency
exchange rates or, except in the case of currency related contracts, to seek to
increase total return, the Fund may purchase and sell various kinds of futures
contracts, and purchase and write call and put options on any such futures
contracts. The Fund will engage in futures and related options transactions
only for bona fide hedging purposes as defined in regulations of the
Commodities Futures Trading Commission or to seek to increase total return to
the extent permitted by such regulations.
 
  The Fund may not purchase or sell futures contracts or purchase or sell
related options to increase total return, except for closing purchase or sale
transactions, if immediately thereafter the sum of the amount of initial margin
deposits on and premiums paid for the Fund's outstanding positions in futures
and options on futures entered into for the purpose of seeking to increase
total return rather than hedging would exceed 5% of the market value of the
Fund's net assets. Transactions in futures contracts and options on futures
involve brokerage costs, require margin deposits and, in the case of contracts
and options obligating the Fund to purchase securities or currencies, require
the Fund to segregate cash and liquid, high grade debt securities with a value
equal to the amount of the Fund's obligations.
 
  While transactions in futures contracts and options on futures may reduce
certain risks, such transactions themselves entail certain other risks. See
"Investment Objectives and Policies--Futures Contracts and Options on Futures
Contracts" in the Additional Statement. Thus, while the Fund may benefit from
the use of futures and options on futures, unanticipated changes in interest
rates, securities prices or currency exchange rates may result in a poorer
overall performance for the Fund than if it had not entered into any futures
contracts or options transactions. The loss incurred by the Fund in writing
options on futures is potentially unlimited and may exceed the amount of the
premium received.
 
  The use of futures may increase the volatility of the Fund's net asset value.
The profitability of the Fund's trading in futures to increase total return
will depend on the Investment Adviser's ability to correctly analyze the
futures markets. In addition, because of the low margin deposits normally
required in futures trading, a relatively small price movement in a futures
contract may result in substantial losses to the Fund. Further, futures trading
may be illiquid, and exchanges may limit fluctuations in futures contract
prices during a single day.
 
  In the event of an imperfect correlation between a futures position and a
portfolio position which is intended to be protected, the desired protection
may not be obtained and the Fund may be exposed to risk of loss. In addition,
it is not possible to hedge fully or perfectly against changes in the value of
securities denominated in foreign currencies because the value of such
securities is also likely to fluctuate
 
                                       16
<PAGE>
 
as a result of independent factors not related to currency fluctuations.
Therefore, perfect correlation between the Fund's futures positions and
portfolio positions will be impossible to achieve. The Fund's transactions in
foreign currency, forward foreign currency exchange contracts, options and
futures contracts may be limited by the requirements of the Internal Revenue
Code of 1986, as amended (the "Code") for qualification as a regulated
investment company.
 
INTEREST RATE, MORTGAGE AND CURRENCY SWAPS AND INTEREST RATE CAPS, FLOORS AND
COLLARS
 
  The Fund may enter into interest rate, mortgage and currency swaps for
hedging purposes and may also enter into interest rate and mortgage swaps to
seek to increase total return. The Fund may also enter into other types of
interest rate swap arrangements such as caps, floors and collars. Interest rate
swaps involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, such as an exchange of fixed rate
payments for floating rate payments. Mortgage swaps are similar to interest
rate swaps in that they represent commitments to pay and receive interest. The
notional principal amount, however, is tied to a reference pool or pools of
mortgages. Currency swaps involve the exchange of their respective rights to
make or receive payments in specified currencies. The purchase of an interest
rate cap entitles the purchaser, to the extent that a specified index exceeds a
predetermined interest rate, to receive payments of interest on a notional
principal amount from the party selling said interest rate cap. The purchase of
an interest rate floor entitles the purchaser, to the extent that a specified
index falls below a predetermined interest rate, to receive payment of interest
on a notional principal amount from the party selling such interest rate floor.
An interest rate collar is the combination of a cap and a floor that preserves
a certain return within a predetermined range of interest rates. Since interest
rate, mortgage and currency swaps, caps, floors and collars are individually
negotiated, the Fund expects to achieve an acceptable degree of correlation
between its portfolio investments and its swap, cap, floor and collar positions
entered into for hedging purposes.
 
  The Fund will enter into interest rate and mortgage swaps only on a net
basis, which means that the two payment streams are netted out, with the Fund
receiving or paying, as the case may be, only the net amount of the two
payments. Interest rate and mortgage swaps do not involve the delivery of
securities, other underlying assets or principal. Accordingly, the risk of loss
with respect to interest rate and mortgage swaps is limited to the net amount
of payments that the Fund is contractually obligated to make. If the other
party to an interest rate swap defaults, the Fund's risk of loss consists of
the net amount of payments that the Fund is contractually entitled to receive,
if any. In contrast, currency swaps usually involve the delivery of the entire
principal amount of one designated currency in exchange for the other
designated currency. Therefore, the entire principal value of a currency swap
is subject to the risk that the other party to the swap will default on its
contractual delivery obligations. The Fund will maintain in a segregated
account with the Fund's custodian cash and liquid, high grade debt securities
equal to the net amount, if any, of the excess of the Fund's obligations over
its entitlements with respect to swap transactions. To the extent that the net
amount of a swap is held in such segregated account, the Fund and the
Investment Adviser believe that swaps do not constitute senior securities under
the Investment Company Act of 1940, as amended (the "Act") and, accordingly,
will not treat them as being subject to the Fund's borrowing restriction.
 
  The Fund will not enter into interest rate, mortgage or currency swaps or
interest rate cap, floor and collar transactions unless the unsecured
commercial paper, senior debt or claims paying ability of the other party is
rated either AA or A-1 or better by Standard & Poor's or Aa or P-1 or better by
Moody's or, if unrated by such rating organizations, determined to be of
comparable quality by the Investment Adviser.
 
  The use of interest rate, mortgage and currency swaps, as well as interest
rate caps, floors and collars, is a highly specialized activity which involves
investment techniques and risks different from those
 
                                       17
<PAGE>
 
associated with ordinary portfolio securities transactions. If the Investment
Adviser is incorrect in its forecasts of market values, interest rates and
currency exchange rates, the investment performance of the Fund would be less
favorable than it would have been if this investment technique were not used.
The staff of the SEC currently takes the position that swaps, caps, floors and
collars are illiquid and thus subject to the Fund's 15% limitation on illiquid
securities.
 
  RISKS OF DERIVATIVE TRANSACTIONS. The Fund's transactions in interest rate,
mortgage and currency swaps and interest rate caps, floors and collars,
options, futures and options on futures and currency forward contracts involve
certain risks, including a possible lack of correlation between changes in the
value of hedging instruments and the portfolio assets being hedged, the
potential illiquidity of the markets for derivative instruments, the risks
arising from the margin requirements and related leverage factors associated
with such transactions. The use of these management techniques to seek to
increase total return also involves the risk of loss if the Investment Adviser
is incorrect in its expectation of fluctuations in securities prices or
interest rates.
 
ILLIQUID SECURITIES
 
  The Fund will not invest more than 15% of the value of its net assets in
securities which are illiquid, including securities that are not readily
marketable, repurchase agreements maturing in more than seven days, interest
rate, mortgage and currency swaps, interest rate caps, floors and collars,
certain over-the-counter options, certain SMBS and securities offered in the
United States that are restricted as to resale. However, a restricted security
is not considered to be illiquid if the Trustees of the Trust determine, based
upon the Investment Adviser's continuing review of the trading markets for the
specific restricted security, under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale under Rule 144A under the
Securities Act of 1933 is liquid. In addition, a repurchase agreement which by
its terms can be liquidated before its nominal fixed term on seven days or less
notice is regarded as a liquid instrument. Subject to the 15% limitation on
illiquid investments, the Fund may acquire U.S. Government securities in a
private placement.
 
  Since it is not possible to predict with assurance exactly how the market for
restricted securities sold and offered under Rule 144A will develop, the Board
of Trustees will carefully monitor the Fund's investments in these securities,
focusing on such important factors, among others, as valuation, credit quality,
liquidity and availability of information. This investment practice could have
the effect of increasing the level of illiquidity in the Fund to the extent
that qualified institutional buyers become for a time uninterested in
purchasing these restricted securities.
 
REPURCHASE AGREEMENTS
 
  The Fund may enter into repurchase agreements with dealers in U.S. Government
securities and member banks of the Federal Reserve System which furnish
collateral at least equal in value or market price to the amount of their
repurchase obligation. In a repurchase agreement, the Fund purchases a debt
security from a seller which undertakes to repurchase the security at a
specified resale price on an agreed future date (ordinarily a week or less).
The resale price generally exceeds the purchase price by an amount which
reflects an agreed-upon market interest rate for the term of the repurchase
agreement. The primary risk is that, if the seller defaults, the Fund might
suffer a loss to the extent that the proceeds from the sale of the underlying
securities and other collateral held by the Fund in connection with the related
repurchase agreement are less than the repurchase price. Repurchase agreements
maturing in more than seven days are considered by the Fund to be illiquid. In
addition, the Fund, together with other
 
                                       18
<PAGE>
 
registered investment companies having advisory agreements with the Adviser,
may transfer uninvested cash balances into a single joint account, the daily
aggregate balance of which will be invested in one or more repurchase
agreements.
 
MORTGAGE DOLLAR ROLLS
 
  The Fund may enter into mortgage "dollar rolls" in which the Fund sells
securities for delivery in the current month and simultaneously contracts with
the same counterparty to repurchase similar (same type, coupon and maturity),
but not identical securities on a specified future date. During the roll
period, the Fund loses the right to receive principal and interest paid on the
securities sold. However, the Fund would benefit to the extent of any
difference between the price received for the securities sold and the lower
forward price for the future purchase (often referred to as the "drop") or fee
income plus the interest earned on the cash proceeds of the securities sold
until the settlement date of the forward purchase. Unless such benefits exceed
the income, capital appreciation and gain or loss due to mortgage prepayments
that would have been realized on the securities sold as part of the mortgage
dollar roll, the use of this technique will diminish the investment performance
of the Fund compared with what such performance would have been without the use
of mortgage dollar rolls. All cash proceeds will be invested in instruments
that are permissible investments for the Fund. The Fund will hold and maintain
in a segregated account until the settlement date cash or liquid, high grade
debt securities in an amount equal to the forward purchase price.
 
  For financial reporting and tax purposes, the Fund treats mortgage dollar
rolls as two separate transactions; one involving the purchase of a security
and a separate transaction involving a sale. The Fund does not currently intend
to enter into mortgage dollar rolls that are accounted for as a financing.
 
  Mortgage dollar rolls involve certain risks including the following: if the
broker-dealer to whom the Fund sells the security becomes insolvent, the Fund's
right to purchase or repurchase the mortgage-related securities subject to the
mortgage dollar roll may be restricted and the instrument which the Fund is
required to repurchase may be worth less than an instrument which the Fund
originally held. Successful use of mortgage dollar rolls will depend upon the
Investment Adviser's ability to manage its interest rate and mortgage
prepayment exposure. For these reasons, there is no assurance that mortgage
dollar rolls can be successfully employed.
 
WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES
 
  The Fund may purchase securities on a when-issued basis. When-issued
transactions arise when securities are purchased by the Fund with payment and
delivery taking place in the future in order to secure what is considered to be
an advantageous price and yield to the Fund at the time of entering into the
transaction. The Fund may also purchase securities on a forward commitment
basis. In a forward commitment transaction, the Fund contracts to purchase
securities for a fixed price at a future date beyond customary settlement time.
The Fund is required to hold and maintain in a segregated account until the
settlement date cash or liquid, high grade debt obligations in an amount
sufficient to meet the purchase price. Alternatively, the Fund may enter into
offsetting contracts for the forward sale of other securities that it owns. The
purchase of securities on a when-issued or forward commitment basis involves a
risk of loss if the value of the security to be purchased declines prior to the
settlement date. Although the Fund would generally purchase securities on a
when-issued or forward commitment basis with the intention of actually
acquiring securities for its portfolio, the Fund may dispose of a when-issued
security or forward commitment prior to settlement if the Investment Adviser
deems it appropriate to do so.
 
                                       19
<PAGE>
 
LENDING OF PORTFOLIO SECURITIES
 
  The Fund may also seek to increase its income by lending portfolio
securities. Under present regulatory policies, such loans may be made to
institutions, such as certain broker-dealers, and are required to be secured
continuously by collateral in cash, cash equivalents, or U.S. Government
securities maintained on a current basis in an amount at least equal to the
market value of the securities loaned. Cash collateral may be invested in cash
equivalents. If the Investment Adviser determines to make security loans, the
value of the securities loaned may not exceed 33 1/3% of the value of the total
assets of the Fund. See "Investment Restrictions" in the Additional Statement.
The Fund may experience a loss or delay in the recovery of its securities if
the institution with which it has engaged in a portfolio loan transaction
breaches its agreement with the Fund.
 
FOREIGN CURRENCY TRANSACTIONS AND OPTIONS
 
  The Fund may, to the extent it invests in securities denominated in a
currency other than the U.S. dollar, enter into forward foreign currency
exchange contracts in order to protect against adverse changes in future
foreign currency exchange rates. The Fund may enter into contracts to purchase
foreign currencies to protect against an anticipated rise in the U.S. dollar
price of securities it intends to purchase. The Fund may enter into contracts
to sell foreign currencies to protect against the decline in value of its
foreign currency denominated portfolio securities, or a decline in the value of
anticipated interest or dividends from such securities, due to a decline in the
value of foreign currencies against the U.S. dollar. Contracts to sell foreign
currency could limit any potential gain which might be realized by the Fund if
the value of the hedged currency increased.
 
  Currency exchange rates may fluctuate significantly over short periods of
time. They generally are determined by the forces of supply and demand in the
foreign exchange markets and the relative merits of investments in different
countries, actual or anticipated changes in interest rates and other complex
factors, as seen from an international perspective. Currency exchange rates
also can be affected unpredictably by intervention by U.S. or foreign
governments or central banks or the failure to intervene. Since a forward
foreign currency exchange contract is not guaranteed by an exchange or
clearinghouse, a default on the contract would deprive the Fund of unrealized
profits or force the Fund to cover its commitments for purchase or resale, if
any, at the current market price.
 
  The Fund's custodian will place cash or liquid, high grade debt securities
into a segregated account of the Fund in an amount equal to the value of the
Fund's total assets committed to the consummation of forward foreign currency
exchange contracts requiring the Fund to purchase foreign currencies. The
segregated account will be marked to market on a daily basis. Thus, if the
value of securities placed in the segregated account declines, additional cash
or securities will be placed in the account on a daily basis so that the value
of the account will equal the amount of the Fund's commitments with respect to
such contracts.
 
  The Fund may, to the extent it invests in foreign securities, purchase and
write put and call options on foreign currencies for the purpose of protecting
against declines in the dollar value of foreign portfolio securities and
anticipated income from such securities and against increases in the U.S.
dollar cost of foreign securities to be acquired. As with other kinds of
option-writing transactions, however, the writing of an option on foreign
currency will constitute only a partial hedge, up to the amount of the premium
received. If and when the Fund seeks to close out an option, the Fund could be
required to purchase or sell foreign currencies at disadvantageous exchange
rates, thereby incurring losses. The purchase of an option on foreign currency
may constitute an effective hedge against exchange rate fluctuations; however,
in the event of exchange rate movements adverse to the Fund's position, the
Fund may forfeit the entire amount of the premium plus related transaction
costs. Options on foreign currencies to be written or purchased by the Fund
will be traded on U.S. and foreign exchanges or over-the-counter.
 
                                       20
<PAGE>
 
OTHER INVESTMENT COMPANIES
 
  The Fund reserves the right to invest up to 10% of its total assets,
calculated at the time of purchase, in the securities of other investment
companies including business development companies and small business
investment companies. The Fund may not invest more than 5% of its total assets
in the securities of any one investment company or acquire more than 3% of the
voting securities of any other investment company. Pursuant to an exemptive
order obtained from the SEC, other investment companies in which the Fund may
invest include money market funds for which the Investment Adviser or any of
its affiliates serves as investment adviser. The Fund will indirectly bear its
proportionate share of any management fees and other expenses paid by
investment companies in which it invests in addition to the advisory fee paid
by the Fund. However, to the extent that the Fund invests in a money market
fund for which the Investment Adviser or any of its affiliates acts as adviser,
the advisory fee payable by the Fund to the Investment Adviser will be reduced
by an amount equal to the Fund's proportionate share of the advisory and
administration fees paid by such money market fund to the Investment Adviser or
any of its affiliates.
 
                                  RISK FACTORS
 
  The net asset value of the Fund's shares will change with changes in the
value of its portfolio securities. The net asset value of the shares of the
Fund can be expected to change as general levels of interest rates fluctuate.
Volatility may be greater during periods of general economic uncertainty and
interest rate fluctuation.
 
  The fixed income securities in the Fund's portfolio will generally tend to
decrease in value when interest rates rise and increase in value when interest
rates fall (although mortgage-backed and asset-backed securities will generally
have less potential for capital appreciation during periods of declining rates
than other securities). Because fixed income investments are interest rate
sensitive, the Fund's performance will depend in large part upon the ability of
the Fund to anticipate and respond to fluctuations in market interest rates and
to utilize the hedging and other active management techniques described above.
The yield on most interest only and principal only securities is extremely
sensitive to the rate of principal payments, including prepayments. Prepayments
with respect to such securities could result in the Fund failing to recoup its
initial investment even though the securities are rated in the highest credit
rating category. Operating results will also depend upon opportunities for the
investment of the Fund's assets, including the availability of suitable
securities.
 
  Derivative mortgage-backed securities are subject to different combinations
of interest rate and/or prepayment risk. In addition, particular derivative
securities may also be leveraged such that their exposure (i.e., price
sensitivity) to interest rate and/or prepayment risk is magnified. The
Investment Adviser may use derivative mortgage-backed securities and other
derivative securities consistently with the Fund's investment objective for a
variety of purposes including adjusting the average duration or interest rate
sensitivity of the Fund's portfolio or attempting to enhance the Fund's total
return. The Investment Adviser manages the risks and benefits of derivative
mortgage-backed securities and other derivative securities by prudent analysis,
selection and monitoring of such securities included in the Fund's portfolio.
 
  Fund shares may be expected to fluctuate in value. If shares are redeemed at
a price that is less than the price at which the shares were purchased, the
investor will experience a loss of principal.
 
  An investment in the Fund and the Fund's investments and practices entail
certain other risks, including the risk that an issuer may default on its
obligations, risks associated with investments in derivative securities,
mortgage and asset-backed securities and foreign securities and the risk that
return on an investment in the Fund may not exceed the return on the Index. For
a discussion of such risks, see "Summary--Risk Factors".
 
                                       21
<PAGE>
 
                            INVESTMENT RESTRICTIONS
 
  The Fund's investment objective and, except as discussed below, policies are
not fundamental and may be changed without a vote of shareholders. The Fund is
subject to certain investment restrictions which, as described in more detail
in the Additional Statement, are fundamental policies that cannot be changed
without the approval of a majority of the outstanding shares of the Fund. Among
other restrictions, the Fund may not, with respect to 75% of its total assets,
purchase securities of any one issuer (other than U.S. Government securities)
if more than 5% of its total assets would be invested in such issuer or invest
more than 25% of its total assets in the securities of issuers (including any
one foreign government, but excluding the U.S. Government) in any one industry.
The Fund may not borrow money, except to finance share redemptions and
portfolio settlements and from banks for temporary or short-term purposes,
provided that the Fund maintains asset coverage of 300% for all borrowings. As
a nonfundamental policy, the Fund may not purchase securities while borrowings
exceed 5% of the value of the Fund's total assets.
 
                               PORTFOLIO TURNOVER
 
  The Fund may engage in active short-term trading to benefit from yield
disparities among different issues of securities or among the different sectors
of the U.S. and foreign markets for fixed income securities, to seek short-term
profits during periods of fluctuating interest rates, or for other reasons.
Such trading will increase the Fund's portfolio turnover rate and may increase
the incidence of short-term capital gain (distributions of which are taxable to
shareholders as ordinary income). A high rate of portfolio turnover (100% or
higher) involves correspondingly greater expenses which must be borne by the
Fund and its shareholders and may under certain circumstances make it more
difficult for the Fund to qualify as a regulated investment company under the
Code. The portfolio turnover rate is calculated by dividing the lesser of the
dollar amount of sales or purchases of portfolio securities by the average
monthly value of the Fund's portfolio securities, excluding securities having a
maturity at the date of purchase of one year or less. The portfolio turnover
rate includes the effect of entering into mortgage dollar rolls.
 
                                   MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct and supervise the Fund's
daily business operations. The Additional Statement contains information as to
the identity of, and other information about, the Trustees and officers of the
Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Asset Management, One New York Plaza, New York, New York 10004,
a separate operating division of Goldman Sachs, acts as the investment adviser
of the Fund. Goldman Sachs was registered as an investment adviser in 1981. As
of January 31, 1995, Goldman Sachs Asset Management, together with its
affiliates, acted as investment adviser, administrator or distributor for
approximately $48.7 billion in assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Asset
Management, subject to the general supervision of the Trust's Board of
Trustees, manages the Fund's portfolio and provides for the administration of
all of the Fund's other affairs. It is the responsibility of the Investment
Adviser to make investment decisions for the Fund and to place purchase and
sale orders for the Fund's portfolio transactions. Such orders may be directed
to any broker including, to the extent and in the
 
                                       22
<PAGE>
 
manner permitted by applicable law, Goldman Sachs or its affiliates. Goldman
Sachs has agreed to permit the Fund to use the name "Goldman Sachs" or a
derivative thereof as part of the Fund's name for as long as the Investment
Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Jonathan A. Beinner, Theodore T. Sotir and
Richard C. Lucy. Messrs. Beinner and Lucy each specialize in investing in a
particular type of security the Fund may hold. Mr. Sotir helps with overall
portfolio strategy and is a member of the Investment Adviser's risk control
team. Mr. Beinner joined Goldman Sachs Asset Management in 1990 and is
currently a Vice President, after working in the trading and arbitrage group of
Franklin Savings Association. Mr. Sotir joined Goldman Sachs Asset Management
in 1993 and is currently a Vice President, after working as a portfolio manager
at Fidelity Management Trust Company. Prior to joining Fidelity, Mr. Sotir
worked for Goldman Sachs for six years. Mr. Lucy joined Goldman Sachs Asset
Management in 1992 and is currently a Vice President, after spending nine years
managing fixed income assets at Brown Brothers Harriman & Co.
 
  As compensation for the services rendered to the Fund by Goldman Sachs Asset
Management pursuant to the Investment Advisory Agreement, and the assumption by
Goldman Sachs Asset Management of the related expenses, the Fund pays Goldman
Sachs Asset Management a fee, computed daily and payable monthly, at an annual
rate equal to 0.40% of the Fund's average daily net assets. For the period
January 5, 1994 (commencement of operations) through October 31, 1994, the Fund
paid an advisory fee to the Investment Adviser equal on an annual basis to
0.40% of the Fund's average daily net assets.
 
  The Investment Adviser has voluntarily agreed to reduce or otherwise limit
certain expenses of the Fund (excluding advisory fees, payments to Service
Organizations (as defined below), taxes, interest and brokerage and litigation,
indemnification and other extraordinary expenses) to the extent such expenses
exceed 0.05% annually of the Fund's average net assets. Such reductions or
limits, if any, are calculated monthly on a cumulative basis and may be
discontinued or modified by the Investment Adviser at its discretion at any
time. The Investment Adviser has also agreed to reduce its fees payable (to the
extent of such fees) by the amount the Fund's expenses exceed the applicable
expense limitations imposed by state securities administrators. See
"Management--Expenses" in the Additional Statement.
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser, Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts and
other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities, currencies and
instruments as the Fund. Goldman Sachs and its affiliates will not have any
obligation to make available any information regarding their proprietary
activities or strategies, or the activities or strategies used for other
accounts managed by them, for the benefit of the management of the Fund and it
is not anticipated that the Investment Adviser will have access to proprietary
information for the purpose of managing the Fund. The results of the Fund's
investment activities, therefore, may differ from those of Goldman Sachs and
its affiliates and it is possible that the Fund could sustain losses during
periods in which Goldman Sachs and its affiliates and other accounts achieve
significant profits on their trading for proprietary or other accounts. From
time to time, the Fund's activities may be limited because of regulatory
restrictions applicable to Goldman Sachs and its affiliates, and/or their
internal policies designed to comply with such restrictions. See "Activities of
Goldman Sachs and its Affiliates and Other Accounts Managed by Goldman Sachs"
in the Additional Statement for further information.
 
                                       23
<PAGE>
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact Goldman
Sachs (as Transfer Agent) at the address or the telephone number set forth on
the inside front cover page of this Prospectus.
 
                                   DIVIDENDS
 
  The Fund intends to declare a daily dividend. Such dividend will accrue to
shareholders of record as of 3:00 p.m. Chicago time, and will be paid monthly.
Over the course of the fiscal year, dividends accrued and paid will constitute
all or substantially all of the Fund's net investment income. From time to time
a portion of such dividends may constitute a return of capital. The Fund also
intends that all net realized long-term and short-term capital gains will be
declared as a dividend at least annually. In determining amounts of capital
gains to be distributed, capital losses including any available capital loss
carryovers from prior years will be offset against capital gains.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination is
made as of 3:00 p.m. Chicago time.
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case, cash
payment will be made on the first Business Day of the succeeding month. Payment
of dividends with respect to capital gains, if any, when declared will be made
in additional shares of the Fund at the net asset value on the payment date,
unless cash distributions are elected. This election to receive dividends in
cash is initially made on the Account Information Form and may be changed upon
written notice to the Transfer Agent at any time prior to the record date for a
particular dividend or distribution. If cash dividends are elected with respect
to the Fund's monthly net investment income dividends, then cash dividends must
also be elected with respect to the non-long term capital gains component, if
any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or realized or unrealized appreciation of the Fund's portfolio securities.
Therefore, subsequent distributions (or portions thereof) of taxable income or
realized appreciation on such shares may be taxable to the investor even if the
net asset value of the shares is, as a result of the distributions, reduced
below the cost of such shares and the distributions (or portions thereof)
represent a return of a portion of the purchase price.
 
                                NET ASSET VALUE
 
  The net asset value per share of the Fund is calculated by the Fund's
custodian as of the close of regular trading on the New York Stock Exchange
(normally 3:00 p.m. Chicago time, 4:00 p.m. New York
 
                                       24
<PAGE>
 
time), immediately after determination of the income to be declared as a
dividend on each Business Day (as such term is defined under "Additional
Information"). Net asset value per share of each class is calculated by
determining the net assets attributable to each class and dividing by the
number of outstanding shares of that class.
 
  Investments in mortgage-backed securities and other debt obligations are
valued at fair value, based on yield equivalents, a pricing matrix or other
sources, under valuation procedures established by the Trust's Board of
Trustees. Other portfolio securities for which accurate market quotations are
readily available are valued on the basis of quotations furnished by a pricing
service or provided by dealers in such securities. Portfolio securities for
which accurate market quotations are not readily available are valued in
accordance with the Trust's valuation procedures. Debt obligations with a
remaining maturity of 60 days or less are valued at amortized cost. The Board
of Trustees has determined that the amortized cost of such securities
approximates fair market value.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish average annual total return and yield
in advertisements and communications to shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most recent
calendar quarter, assuming reinvestment of all dividends and distributions at
net asset value. The total return calculation assumes a complete redemption of
the investment at the end of the relevant period. The Fund may also from time
to time advertise total return on a cumulative, average, year-by-year or other
basis for various specified periods by means of quotations, charts, graphs or
schedules. In addition to the above, the Fund may from time to time advertise
its performance relative to certain performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value of the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided in
shareholder reports, the Fund may, in its discretion, from time to time make a
list of its holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of Fund shares in existence. Because each class of shares may be
subject to different expenses, the yield, total return and
 
                                       25
<PAGE>
 
distribution rate calculations with respect to each class of shares of the Fund
for the same period will differ. Due to the fees payable under the Service Plan
and the Administration Plan, the investment performance, for any period, of the
Institutional Shares will always be higher than the Service Shares and the
Administration Shares and the investment performance of the Administration
Shares will always be higher than the performance of the Service Shares. See
"Shares of the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement the Trustees are
authorized to issue an unlimited number of shares of beneficial interest, $.001
par value per share. The Trustees of the Trust are responsible for the overall
management and supervision of its affairs. The Trustees of the Trust have
authority under the Trust Agreement to create and classify shares of beneficial
interest in separate series, without further action by shareholders. As of the
date of this Prospectus, the Trustees have authorized shares of the Fund and
ten other series. Additional series may be added in the future. The Trustees
also have authority to classify or reclassify any series or portfolio of shares
into one or more classes. Pursuant thereto, the Trustees have authorized the
issuance of three classes of the Fund. These classes are: Institutional Shares,
Administration Shares and Service Shares. As of October 31, 1994, no
Administration Shares or Service Shares of the Fund were outstanding.
 
  Each Institutional Share, Administration Share and Service Share of the Fund
represents an equal proportionate interest in the assets belonging to the Fund.
All Fund expenses are based on a percentage of the Fund's aggregate average net
assets, except that the respective account administration and service fees
relating to a particular class will be borne exclusively by that class. It is
contemplated that most Administration Shares and Service Shares will be held in
accounts of which the record owner is a bank or other institution acting,
directly or through an agent, as nominee for its customers who are the
beneficial owners of the shares or another organization designated by such bank
or institution. Administration Shares and Service Shares will each be marketed
only to such institutional investors at net asset value with no sales load.
Institutional Shares may be purchased for accounts in the name of an investor
or institution that is not compensated by the Fund for services provided to the
institution's customers. Administration Shares may be purchased for accounts
held in the name of an institution that provides certain account administration
services to its customers, including maintenance of account records and
processing orders to purchase, redeem or exchange Administration Shares.
Administration Shares bear the cost of account administration fees at the
annual rate of up to 0.25% of the average daily net assets of such
Administration Shares. Service Shares may be purchased for accounts held in the
name of an institution that provides certain account administration and
shareholder liaison services to its customers, including maintenance of account
records and processing orders to purchase, redeem or exchange Service Shares,
responding to customer inquiries and assisting customers with investment
procedures. Service Shares bear the cost of service fees at the annual rate of
up to 0.50% of the average daily net assets of such Service Shares.
(Institutions that provide services to holders of Administration or Service
Shares are referred to in this Prospectus as "Service Organizations").
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration and Service Shares) to
its customers and thus receive different compensation with respect to different
classes of shares of the Fund. Administration Shares and Service Shares may
each have certain exclusive voting rights on matters relating to their
respective plans. Currently, shares of each class may be exchanged only for
shares of the same class in another fund and certain money market funds
sponsored by Goldman Sachs. The Fund may amend such policy in the future.
Dividends paid by the
 
                                       26
<PAGE>
 
Fund, if any, with respect to each class of shares will be calculated in the
same manner, at the same time and on the same day and will be in the same
amount, except for differences caused by the fact that the respective account
administration and service fees relating to a particular class will be borne
exclusively by that class. Similarly, the net asset value per share will vary
depending on the class of shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or conversion rights.
 
  Under Massachusetts law, there is a remote possibility that shareholders of a
business trust could, under certain circumstances, be held personally liable as
partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
  Unless otherwise required by the Act, ordinarily it will not be necessary for
the Trust to hold annual meetings of shareholders. As a result, shareholders
may not consider each year the election of Trustees or the appointment of
independent accountants. Shareholders may remove a Trustee by the affirmative
vote of at least two-thirds of the Trust's outstanding shares and the Trustees
must promptly call a meeting for such purpose when requested to do so in
writing by the record holders of not less than 10% of the outstanding shares of
the Trust. Shareholders may, under certain circumstances, communicate with
other shareholders in connection with requesting a special meeting of
shareholders. The Board of Trustees, however, will call a special meeting for
the purpose of electing Trustees if, at any time, less than a majority of
Trustees holding office at the time were elected by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue
certificates representing Institutional, Administration or Service Shares.
Instead, the Transfer Agent maintains a record of each Institutional,
Administration and Service shareholder's ownership. Each shareholder receives
confirmation of purchase and redemption orders from the Transfer Agent. Shares
and any dividends and distributions paid by the Fund are reflected in account
statements from the Transfer Agent.
 
                                    TAXATION
 
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code and intends to continue to qualify for such treatment.
To qualify for treatment as a regulated investment company, the Fund must
satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
 
                                       27
<PAGE>
 
  Dividends paid by the Fund from net investment income, the excess of net
short-term capital gain over net long-term capital loss, certain net foreign
currency gains, and original issue discount or certain market discount income
will be taxable to shareholders as ordinary income. Dividends paid by the Fund
from the excess of net long-term capital gain over net short-term capital loss
will be taxable as long-term capital gains regardless of how long the
shareholders have held their shares. These tax consequences will apply
regardless of whether distributions are received in cash or reinvested in
shares. Certain distributions paid by the Fund in January of a given year may
be taxable to shareholders as if received the prior December 31. Shareholders
will be informed annually about the amount and character of distributions
received from the Fund for federal income tax purposes.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
even though the distribution represents a return of a portion of the purchase
price.
 
  Redemptions and exchanges of shares are taxable events on which a shareholder
may recognize a gain or loss.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on distributions, redemptions and
exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other shareholders
that are not U.S. persons under the Code are subject to different tax rules and
may be subject to non-resident alien withholding at the rate of 30% (or a lower
rate provided by an applicable tax treaty) on amounts treated as ordinary
dividends from the Fund.
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local or
foreign taxes on payments received from the Fund. A state income (and possibly
local income and/or intangible property) tax exemption is generally available
to the extent the Fund's distributions are derived from interest on (or, in the
case of intangibles taxes, the value of its assets is attributable to) certain
U.S. Government obligations, provided in some states that certain thresholds
for holdings of such obligations and/or reporting requirements are satisfied.
 
                             ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at the meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days when
the Investment Adviser, The Northern Trust Company, State Street Bank and Trust
Company and the Federal Reserve Bank of New York are open for business, which
is Monday through Friday except for holidays. Such holidays currently are: New
Year's Day (observed), Martin Luther King Day, Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Columbus Day,
Thanksgiving and Christmas. On those days when one or more of such
organizations close early as a result of such day being a partial holiday or
otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                       28
<PAGE>
 
                              ADMINISTRATION PLAN
 
  The Trust, on behalf of the Fund, has adopted an Administration Plan with
respect to the Administration Shares which authorizes the Fund to compensate
Service Organizations for providing account administration services to their
customers who are beneficial owners of such Shares. The Trust, on behalf of the
Fund, will enter into agreements with Service Organizations which purchase
Administration Shares on behalf of their customers ("Service Agreements"). The
Service Agreements will provide for compensation to the Service Organizations
in an amount up to 0.25% (on an annualized basis) of the average daily net
assets of the Administration Shares of the Fund attributable to or held in the
name of the Service Organization for its customers. The services provided by
the Service Organizations may include acting, directly or through an agent, as
the sole shareholder of record, maintaining account records for customers and
processing orders to purchase, redeem or exchange Administration Shares for
customers.
 
  Had Administration Shares been outstanding during the fiscal year ended
October 31, 1994, the Trust, on behalf of the Fund, would have paid the Service
Organizations fees at the annual rate of 0.25% of the Fund's average daily net
assets attributable to the Administration Shares.
 
  Holders of Administration Shares of the Fund will bear all expenses and fees
paid to Service Organizations with respect to such Shares as well as any other
expenses which are directly attributable to such Shares.
 
  Service Organizations (other than broker-dealers) may charge other fees to
their customers who are the beneficial owners of Administration Shares in
connection with their customer accounts. These fees would be in addition to any
amounts received by the Service Organization under a Service Agreement and may
affect the return earned on an investment in the Fund. The Trust, on behalf of
the Fund, will accrue payments made pursuant to a Service Agreement daily. All
inquiries of beneficial owners of Administration Shares should be directed to
such owners' Service Organization.
 
                            REPORTS TO SHAREHOLDERS
 
  Recordholders of Administration Shares of the Fund will receive an annual
report containing audited financial statements and a semi-annual report. Each
recordholder of Administration Shares will also be provided with a printed
confirmation for each transaction in its account and a monthly account
statement. A year-to-date statement for any account will be provided to a
Service Organization upon request made to Goldman Sachs.
 
  Service Organizations will be responsible for providing services similar to
those described above to their customers who are the beneficial owners of such
Shares. For example, Service Organizations are responsible for providing each
customer exercising investment discretion with monthly statements with respect
to such customer's account in lieu of an immediate confirmation of each
transaction.
 
                       PURCHASE OF ADMINISTRATION SHARES
 
  It is expected that all direct purchasers of Administration Shares of the
Fund will be Service Organizations or their nominees. Customers of Service
Organizations may invest in Administration Shares only through their Service
Organizations. Administration Shares of the Fund may be purchased by a Service
Organization through Goldman Sachs at the net asset value per share next
determined after receipt from a Service Organization of an order without the
imposition of a sales load. If, by 3:00 p.m. Chicago time (4:00 p.m. New York
time), an order, a check or a Federal Reserve draft is received from a
 
                                       29
<PAGE>
 
Service Organization by Goldman Sachs, the price per share will be the net
asset value per share computed on the day the purchase order or such form of
payment is received. See "Net Asset Value."
 
PURCHASE PROCEDURES
 
  Purchases of Administration Shares by a Service Organization may be made by
placing an order with Goldman Sachs at 800-621-2550 and either wiring Federal
Funds to The Northern Trust Company ("Northern") as subcustodian for State
Street Bank and Trust Company ("State Street") on the next Business Day or
initiating an ACH transfer to ensure receipt by Northern on the next Business
Day. Purchases may also be made by a Service Organization by check (except that
a check drawn on a foreign bank will not be accepted) or Federal Reserve draft
made payable to "Goldman Sachs Trust--GS Core Fixed Income Fund" and should be
directed to Goldman Sachs Trust--GS Core Fixed Income Fund, c/o GSAM
Shareholder Services, 4900 Sears Tower, Chicago, Illinois 60606. Payment of the
proceeds of redemption of shares purchased by check may be delayed for a period
of time as described under "Redemption of Administration Shares."
 
  The Service Organizations are responsible for the timely transmittal of
purchase orders to Goldman Sachs and payments to Northern or Goldman Sachs. In
order to facilitate timely transmittal, the Service Organizations have
established times by which purchase orders and payments must be received by
them.
 
OTHER PURCHASE INFORMATION
 
  The Fund does not have any minimum purchase or account requirements with
respect to Administration Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Administration Shares,
and may establish other requirements such as a minimum required account
balance. A Service Organization may effect redemptions of noncomplying
accounts, and may impose a charge for any special services rendered to its
customers. Customers should contact their Service Organization for further
information concerning such requirements and charges.
 
  The Fund reserves the right to redeem Administration Shares of any Service
Organization whose account balance is less than $100 as a result of earlier
redemptions. Such redemptions will not be implemented if the value of such
Shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days prior written
notice to Service Organizations whose Administration Shares are being redeemed
to allow them to purchase sufficient additional Administration Shares to avoid
such redemption.
 
PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is received
from a Service Organization by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and dividends will begin on such shares on the
next Business Day, provided that a Federal Funds wire or an ACH transfer is
received by Northern on such day.
 
PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a Service Organization's check
or Federal Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago
time, the purchased shares will be issued and dividends will begin on such
shares on the next Business Day after the Service Organization's check or
Federal Reserve draft is received by Goldman Sachs.
 
                                       30
<PAGE>
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges of
Administration Shares by a particular purchaser (or group of related
purchasers). The Fund or Goldman Sachs may reject or restrict purchases or
exchanges of Administration Shares by a particular purchaser or group, for
example, when a pattern of frequent purchases and sales or exchanges of
Administration Shares of the Fund is evident, or if the purchase, sale or
exchange orders are, or a subsequent abrupt redemption might be, of a size that
would disrupt management of the Fund.
 
                               EXCHANGE PRIVILEGE
 
  Administration Shares of the Fund may be exchanged by Service Organizations
for (i) Administration Shares of any other mutual fund sponsored by Goldman
Sachs and designated as an eligible fund for this purpose and (ii) the relevant
class of any portfolio of Goldman Sachs Money Market Trust at the net asset
value next determined either by writing to Goldman Sachs, Attention: Goldman
Sachs Trust--GS Core Fixed Income Fund, c/o GSAM Shareholder Services, 4900
Sears Tower, Chicago, Illinois 60606 or if previously elected in the Fund's
Account Information Form, by telephone at 800-621-2550 (7:00 a.m. to 3:00 p.m.
Chicago time). A shareholder should obtain and read the prospectus relating to
any other fund and its shares or units and consider its investment objective,
policies and applicable fees before making an exchange. Administration Shares
acquired by telephone exchange must be registered in the same name(s) and have
the same address as Administration Shares of the Fund for which the exchange is
being made.
 
  In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Administration Shares" to confirm
that such instructions are genuine. For federal income tax purposes, an
exchange is treated as a sale of the Administration Shares surrendered in the
exchange, on which an investor may realize a gain or loss, followed by a
purchase of Administration Shares or the relevant class of any portfolio of
Goldman Sachs Money Market Trust received in the exchange. Shareholders should
consult their own tax advisers concerning the tax consequences of an exchange.
Exchanges are available only in states where exchanges may legally be made. The
exchange privilege may be modified or withdrawn at any time on sixty (60) days'
written notice to the recordholders of Administration Shares and is subject to
certain limitations. See "Purchase of Administration Shares."
 
                      REDEMPTION OF ADMINISTRATION SHARES
 
  The Fund will redeem its Administration Shares upon request of the
recordholder of such Shares on any Business Day at the net asset value next
determined after the receipt by the Transfer Agent of such request in proper
form. See "Net Asset Value." If Administration Shares to be redeemed were
recently purchased by check, the Fund may delay transmittal of redemption
proceeds until such time as it has assured itself that good funds have been
collected for the purchase of such Administration Shares. This may take up to
fifteen (15) days. Redemption requests may be made by writing to or calling the
Transfer Agent at the address or telephone number set forth on the cover page
of this Prospectus. A Service Organization may request redemptions by telephone
if the optional telephone redemption privilege is
 
                                       31
<PAGE>
 
elected on the Account Information Form. It may be difficult to implement
redemptions by telephone in times of drastic economic or market changes. In an
effort to prevent unauthorized or fraudulent redemption or exchange requests by
telephone, Goldman Sachs employs reasonable procedures specified by the Trust
to confirm that such instructions are genuine. Among other things, any
redemption request that requires money to go to an account or address other
than that designated on the Account Information Form must be in writing and
signed by an authorized person designated on the Account Information Form. Any
such written request is also confirmed by telephone with both the requesting
party and the designated bank account to verify instructions. Exchanges, among
accounts with different names, addresses and social security or taxpaying
identification numbers must be in writing and signed by an authorized person
designated on the Account Information Form. Other procedures may be implemented
from time to time. If reasonable procedures are not implemented, the Trust may
be liable for any loss due to unauthorized or fraudulent transactions. In all
other cases, neither the Fund, the Trust nor Goldman Sachs will be responsible
for the authenticity of redemption or exchange instructions received by
telephone. If Goldman Sachs receives a redemption request by 3:00 p.m. Chicago
time, the Administration Shares to be redeemed earn dividends with respect to
the day the request is received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired to the recordholder of Administration Shares. Redemption proceeds
will normally be wired on the next Business Day in Federal Funds (for a total
one-day delay), but may be paid up to seven (7) days after receipt of a
properly executed redemption request. Wiring of redemption proceeds may be
delayed one additional Business Day if the Federal Reserve Bank is closed on
the day redemption proceeds would ordinarily be wired. Once wire transfer
instructions have been given by Goldman Sachs, neither the Fund, the Trust nor
Goldman Sachs assumes any further responsibility for the performance of
intermediaries or the customer's Service Organization in the transfer process.
If a problem with such performance arises, the customer should deal directly
with such intermediaries or Service Organization.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by the Transfer Agent. The
request for such redemption will not be considered to have been received in
proper form until such additional documentation has been submitted to the
Transfer Agent by the recordholder of Administration Shares.
 
  Service Organizations are responsible for the timely transmittal of
redemption requests by their customers to the Transfer Agent. In order to
facilitate timely transmittal of redemption requests, Service Organizations
have established times by which redemption requests must be received by them.
Additional documentation may be required when deemed appropriate by a Service
Organization.
 
  Except with respect to Service Organizations whose account balances are less
than $100, Administration Shares of the Fund are not redeemable at the option
of the Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                       32
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF ANY OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Summary....................................................................   3
Financial Highlights.......................................................   8
Investment Objective and Policies..........................................   9
Investment Adviser.........................................................  11
Other Investments and Practices............................................  11
Risk Factors...............................................................  21
Investment Restrictions....................................................  22
Portfolio Turnover.........................................................  22
Management.................................................................  22
Dividends..................................................................  24
Net Asset Value............................................................  24
Performance Information....................................................  25
Shares of the Trust........................................................  26
Taxation...................................................................  27
Additional Information.....................................................  28
Administration Plan........................................................  29
Reports to Shareholders....................................................  29
Purchase of Administration Shares..........................................  29
Exchange Privilege.........................................................  31
Redemption of Administration Shares........................................  31
</TABLE>
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                                 GS CORE FIXED
                                  INCOME FUND
                             ADMINISTRATION SHARES
 
                                  MANAGED BY
                                  ----------
                                 GOLDMAN SACHS
                               ASSET MANAGEMENT.
                       A SEPARATE OPERATING DIVISION OF
 
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
                                  PROSPECTUS
 
                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                           GS CORE FIXED INCOME FUND
                                 SERVICE SHARES
 
                                   MANAGED BY
                                   ----------
                        GOLDMAN SACHS ASSET MANAGEMENT,
                        A SEPARATE OPERATING DIVISION OF
                              GOLDMAN, SACHS & CO.
 
                                  -----------
 
  GS Core Fixed Income Fund (the "Fund") is one fund in a family of funds
advised by Goldman Sachs Asset Management (the "Investment Adviser") or its
affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
  The Fund's investment objective is to provide investors with a total return
consisting of capital appreciation and income that exceeds the total return of
the Lehman Brothers Aggregate Bond Index (the "Index"). There can be no
assurance that the Fund will achieve its investment objective.
 
  The Fund will seek to achieve its objective by investing, under normal market
conditions, primarily in fixed income securities, including securities issued
or guaranteed by the U.S. Government or its agencies, authorities,
instrumentalities or sponsored enterprises, corporate securities, mortgage-
backed securities, and asset-backed securities. The fixed income securities in
which the Fund invests, at the time of investment, will be rated at least BBB
or Baa, or their equivalent rating, by any one of Standard & Poor's Ratings
Group ("Standard & Poor's"), Moody's Investors Service, Inc. ("Moody's") or
Fitch Investors Service, Inc. ("Fitch"), or if unrated by such rating
organizations, determined by the Fund's Investment Adviser to be of comparable
credit quality. The Fund will maintain, under normal market conditions, a
portfolio duration within a range equal to the duration of the Index plus or
minus one year.
 
  Goldman Sachs Asset Management, New York, New York, a separate operating
division of Goldman, Sachs & Co., serves as the Fund's investment adviser.
Goldman, Sachs & Co. serves as the Fund's distributor and transfer agent. The
Trust's custodian is State Street Bank and Trust Company.
 
                                                        (continued on next page)
 
SERVICE SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED OR
ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION, AND ARE NOT
INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD
OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN SERVICE SHARES OF THE FUND
INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
 
                 The date of this Prospectus is March 1, 1995.
<PAGE>
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Service Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from institutions ("Service Organizations") that hold,
directly or through an agent, Service Shares for the benefit of their customers
or Goldman, Sachs & Co. by calling the telephone number, or writing to one of
the addresses, listed below.
 
GOLDMAN SACHS TRUST                     GOLDMAN SACHS ASSET MANAGEMENT
4900 SEARS TOWER                        INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606                 ONE NEW YORK PLAZA
                                        NEW YORK, NEW YORK 10004
 
 
GOLDMAN, SACHS & CO.                    GOLDMAN, SACHS & CO.   
DISTRIBUTOR                             TRANSFER AGENT          
85 BROAD STREET                         4900 SEARS TOWER        
NEW YORK, NEW YORK 10004                CHICAGO, ILLINOIS 60606 
                                                                
 
TOLL FREE (IN U.S.).....................800-621-2550
 
                                       2
<PAGE>
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Core Fixed Income Fund (the "Fund") is one fund in a family of funds
advised by Goldman Sachs Asset Management (the "Investment Adviser") or its
affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a total return
consisting of capital appreciation and income that exceeds the total return of
the Lehman Brothers Aggregate Bond Index (the "Index"). There can be no
assurance that the Fund will achieve its investment objective.
 
  The Fund will seek to achieve its objective by investing, under normal market
conditions, primarily in fixed income securities, including securities issued
or guaranteed by the U.S. Government or its agencies, authorities,
instrumentalities or sponsored enterprises, corporate securities, mortgage-
backed securities, and asset-backed securities. The Investment Adviser will
determine periodically the weighting of such securities based upon the
Investment Adviser's expectation for changes in interest rates, market
conditions, the credit quality of individual issuers and other factors it deems
relevant. The Investment Adviser will have access to the research of, and
proprietary technical models developed by, Goldman, Sachs & Co. ("Goldman
Sachs") and will apply quantitative and qualitative analysis in determining the
appropriate allocations among issuers and types of securities.
 
  The fixed income securities in which the Fund invests, at the time of
investment, will be rated at least BBB or Baa, or their equivalent rating, by
any one of Standard & Poor's, Moody's, or Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality. A security will be deemed to have met this requirement if it receives
the minimum required rating from at least one of such rating organizations even
though it has been rated below the minimum rating by one or more other rating
organizations.
 
  The Fund will maintain, under normal market conditions, a portfolio duration,
as defined under "Investment Objective and Policies," within a range equal to
the duration of the Index plus or minus one year. The Investment Adviser may,
however, decrease the Fund's average portfolio duration without limit if the
Investment Adviser believes that a shorter duration is warranted by the outlook
for interest rates or market conditions. There is no limitation as to the
Fund's maximum weighted average portfolio maturity or the maximum stated
maturity with respect to individual securities.
 
  The fixed income securities in which the Fund may invest include obligations
of foreign issuers and obligations denominated in U.S. dollars or foreign
currencies. The non-dollar denominated fixed income securities in which the
Fund may invest will be rated, at the time of investment, at least AA by
Standard & Poor's, Aa by Moody's, or AA by Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality. The Fund's investments in fixed income securities may also include
Short-Term Investments (as defined below), convertible securities, custody
receipts and municipal securities.
 
  It is expected that the Fund will employ certain interest rate management
techniques. These techniques will be used both to hedge the interest rate risks
associated with the Fund's portfolio securities
 
                                       3
<PAGE>
 
and to seek to increase total return. Such techniques include options, futures
contracts, options on futures contracts, interest rate and mortgage swaps,
interest rate caps, floors and collars, forward commitments, lending portfolio
securities, repurchase agreements and mortgage dollar rolls. The Fund may also
engage in certain currency management techniques, including futures and options
on currencies, forward foreign currency exchange contracts and currency swaps,
but only for hedging purposes.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Asset Management,
a separate operating division of Goldman Sachs, serves as the Fund's investment
adviser. In this capacity, the Investment Adviser provides investment advisory
and administrative services and receives from the Fund a monthly fee equal on
an annual basis to 0.40% of the Fund's average daily net assets. Goldman Sachs
is registered with the Securities and Exchange Commission ("SEC") as an
investment adviser. See "Investment Adviser" and "Management--Investment
Adviser."
 
                   PURCHASE AND REDEMPTION OF SERVICE SHARES
 
  It is expected that all purchasers of Service Shares of the Fund will be
Service Organizations or their nominees. Customers of Service Organizations may
invest in Service Shares only through their Service Organizations. Service
Shares of the Fund may be purchased by Service Organizations through Goldman
Sachs at the current net asset value per share without the imposition of a
sales load. The Fund does not have any minimum purchase or account requirements
with respect to Service Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Service Shares, and
may establish other requirements such as a minimum account balance. See
"Purchase of Service Shares." The Fund will redeem its Service Shares upon
request of a shareholder on any Business Day at the net asset value next
determined after receipt of such request in proper form. See "Redemption of
Service Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
inquiries from Service Organizations. See "Management--Distributor and Transfer
Agent."
 
                                  RISK FACTORS
 
  YIELD AND MARKET RISK. The Fund's investments in fixed income securities
entail certain risks, including adverse income and principal value fluctuation
associated with general economic conditions affecting the fixed income
securities market, as well as adverse interest rate changes and volatility of
yields. Since the Fund invests in securities with a range of maturities, the
volatility of its net asset value may vary (though not necessarily
proportionately) with the average duration of its portfolio. The inherent
volatility risk is such that, during any particular period, there may be a loss
of principal. The net asset value of the shares of the Fund will change in
response to fluctuations in interest rates. When interest rates decline, the
market value of the Fund's fixed income securities and, therefore, the Fund's
net asset
 
                                       4
<PAGE>
 
value, can be expected to rise. Conversely, when interest rates rise, the
market value of the Fund's fixed income securities and, therefore, the Fund's
net asset value can be expected to decline.
 
  COMPARISON TO INDEX. The Fund is not an "index fund" designed to match the
performance of the Index by investing in the securities represented in the
Index in similar proportions to their representation in the Index. Thus, the
Fund is not required to hold any particular portion of the issuers or issues
comprising the Index or to hold them in any particular weightings. As a result,
the Fund's portfolio is likely to be less diverse than and may include
securities not included in the Index. The Fund's performance may also be
affected by its use of derivative instruments and other investment practices.
In addition, the Fund will bear certain expenses which are not considered when
computing the return on the Index. The smaller the size of the Fund, the
greater the effect such expenses would have upon the Fund's performance in
comparison to the Index. Lehman Brothers Inc. may change the composition of the
Index in the future, which may affect the Fund's ability to achieve its
investment objective.
 
  DEFAULT RISK. Investments in fixed income securities are subject to the risk
that the issuer could default on its obligations and the Fund could sustain
losses on such investments. Fixed income securities rated BBB or Baa are
considered medium-grade obligations with speculative characteristics, and
adverse economic conditions or changing circumstances may weaken their issuers'
capability to pay interest and repay principal. Also, to the extent that the
rating assigned to a security in the Fund's portfolio is downgraded by a rating
organization, the market price and liquidity of such security may be adversely
affected. See Appendix A to the Additional Statement for a description of the
securities ratings of Moody's, Standard & Poor's and Fitch.
 
  MORTGAGE AND ASSET BACKED SECURITIES. The Fund's investments in mortgage-
backed and asset-backed securities are often subject to more rapid repayment
than their stated maturity date would indicate as a result of the pass-through
of prepayments of principal on the underlying loans. During periods of
declining interest rates, prepayment of loans underlying mortgage-backed and
asset-backed securities can be expected to accelerate, and thus impair the
Fund's ability to reinvest the returns of principal at comparable yields.
Accordingly, the market values of such securities will vary with changes in
market interest rates generally and in yield differentials among various kinds
of U.S. Government securities and other mortgage-backed and asset-backed
securities. Asset-backed securities present certain risks that are not
presented by mortgage-backed securities because asset-backed securities
generally do not have the benefit of the security interest in collateral that
is comparable to mortgage assets. There is the possibility that, in some cases,
recoveries on repossessed collateral may not be available to support payments
on these securities.
 
  FOREIGN SECURITIES. The Fund may invest in securities of foreign issuers. An
investment in foreign securities may involve risks not present in domestic
investments. Foreign issuers may not be subject to accounting standards or
governmental supervision comparable to that applicable to domestic issuers and
there may be less publicly available information about their operations.
Foreign markets generally provide less liquidity (and thus potentially greater
price volatility), and typically provide fewer regulatory protections for
investors. Foreign securities can be affected by political and financial
instability abroad.
 
  NON-DOLLAR INVESTMENTS. The performance of investments in non-dollar
securities will depend on, among other things, the strength of the foreign
currency against the dollar and the interest rate environment in the country
issuing the foreign currency in which the instrument is denominated. A rise in
interest rates in a foreign country or a decline in the U.S. dollar value of a
foreign currency relative to the
 
                                       5
<PAGE>
 
U.S. dollar generally can be expected to depress the value of the Fund's
securities to the extent that such securities are issued in the country with
rising interest rates or denominated in the declining currency.
 
  OTHER INVESTMENTS AND PRACTICES. The Fund may engage in certain investment
practices and enter into transactions in certain derivative instruments. Such
investment practices and instruments include futures contracts, options and
options on futures contracts, interest rate, mortgage and currency swaps and
interest rate caps, floors and collars, forward commitments, lending portfolio
securities, repurchase agreements and mortgage dollar rolls. The Fund may enter
into these transactions, except for transactions with respect to currencies,
for hedging and speculative purposes (to seek to increase total return). The
Fund may enter into transactions in derivative instruments with respect to
currencies only for hedging purposes. The Fund's use of such investment
practices and derivative instruments involves certain risks, including a
possible lack of correlation between changes in the value of a hedging
instrument and the portfolio security being hedged. The Fund could also be
exposed to a risk of loss if it is unable to close out its derivative positions
because of an illiquid secondary market.
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, and its divisions
and affiliates (including the Investment Adviser), partners and officers, in
the investment activities and business operations of the Fund may present
certain conflicts of interest, as described under "Management--Investment
Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends to declare a daily dividend. Such dividends will accrue to
shareholders of record as of 3:00 p.m. Chicago time, and will be paid monthly.
Over the course of the fiscal year, dividends accrued and paid will constitute
all or substantially all of the Fund's net investment income. From time to time
a portion of such dividends may constitute a return of capital. The Fund also
intends that all or substantially all net realized long-term and short-term
capital gains, if any, after offset by any available capital loss carryforwards
from prior taxable years, will be declared as a dividend and paid at least
annually. Recordholders of Service Shares will receive dividends in additional
Service Shares of the Fund or may elect to receive cash as described under
"Dividends."
 
                              ADDITIONAL SERVICES
 
  The Trust, on behalf of the Fund, has adopted a Service Plan with respect to
the Service Shares of the Fund which authorizes the Fund to compensate Service
Organizations for providing account administration and shareholder liaison
services to their customers who are the beneficial owners of such Shares. The
Trust, on behalf of the Fund, will enter into agreements with each Service
Organization which will provide for compensation to the Service Organization in
an amount up to 0.50% (on an annualized basis) of the average daily net assets
of the Service Shares of the Fund attributable to or held in the name of the
Service Organization for its customers. See "Additional Services."
 
                                       6
<PAGE>
 
 
                               FEES AND EXPENSES
                               (SERVICE SHARES)*
<TABLE>
<CAPTION>
                                                                   GS CORE FIXED
                                                                    INCOME FUND
                                                                   -------------
<S>                                                                <C>
SHAREHOLDER TRANSACTION EXPENSES:
    Maximum Sales Load Imposed on Purchases.......................     None
    Maximum Sales Load Imposed on Reinvestment Dividends..........     None
    Redemption Fees...............................................     None
    Exchange Fees.................................................     None
ANNUAL FUND OPERATING EXPENSES:
(AS A PERCENTAGE OF AVERAGE DAILY NET ASSETS)
    Management Fees...............................................     0.40%
    Service Fees..................................................     0.50%**
    Other Expenses (after expense limitation).....................     0.05%***
                                                                       ----
    TOTAL FUND OPERATING EXPENSES (AFTER EXPENSE LIMITATION)......     0.95%***
                                                                       ====
</TABLE>
 
EXAMPLE:
<TABLE>
<CAPTION>
                                                 1 YEAR 3 YEARS 5 YEARS 10 YEARS
                                                 ------ ------- ------- --------
<S>                                              <C>    <C>     <C>     <C>
You would pay the following expenses on a
 hypothetical $1,000 investment, assuming (1) a
 5% annual return and (2) redemption at the end
 of each time period...........................   $10     $30     $53     $117
</TABLE>
- --------
  * The information set forth in the foregoing table and hypothetical example
    relates only to Service Shares of the Fund. See "Shares of the Trust."
    Institutional Shares and Administration Shares of the Fund are subject to
    different fees and expenses. Institutional Shares are not subject to any
    administration or service fees. Administration Shares are subject to an
    administration fee of up to 0.25% of average daily net assets. All other
    expenses related to Institutional Shares and Administration Shares are the
    same as for Service Shares.
 ** Service Organizations (other than broker-dealers) may charge other fees to
    their customers who are beneficial owners of Service Shares in connection
    with their customer accounts. See "Additional Services."
*** The Investment Adviser voluntarily agreed to reduce or limit certain "Other
    Expenses" of the Fund (excluding advisory fees, payments to Service
    Organizations, taxes, interest and brokerage and litigation,
    indemnification and other extraordinary expenses) to the extent such
    expenses exceeded 0.05% per annum of the Fund's average daily net assets.
    If the Investment Adviser had not agreed to reduce or otherwise limit
    certain "Other Expenses" of the Fund, the Fund's other expenses and total
    operating expenses attributable to Service Shares of the Fund would have
    been 1.06% and 1.96%, on an annualized basis, respectively. See
    "Management--Investment Adviser."
 
  The purpose of the foregoing table is to assist investors in understanding
the various costs and expenses of the Fund that an investor in the Fund will
bear directly or indirectly. The costs and expenses included in the table and
hypothetical example above, which are based on amounts that would have been
incurred for the fiscal year ended October 31, 1994 had Service Shares been
issued, should not be considered as representative of past or future expenses.
Actual fees and expenses may be greater or less than those indicated. Moreover
while the example assumes a 5% annual return, the Fund's actual performance
will vary and may result in an actual return greater or less than 5%. See
"Management" and "Additional Services." Investors should be aware that, due to
the service fees, a long-term shareholder in the Fund may pay over time more
than the economic equivalent of the maximum front end sales charge permitted
under the rules of the National Association of Securities Dealers, Inc.
 
                                       7
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
 
          SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD
 
  The following data with respect to Institutional Shares of the Fund
outstanding during the period indicated below has been audited by Arthur
Andersen LLP, independent public accountants, as indicated in their report
incorporated by reference and attached to the Additional Statement from the
Fund's annual report to shareholders for the period ended October 31, 1994
(the "Annual Report"). This information should be read in conjunction with the
financial statements and related notes incorporated by reference and attached
to the Additional Statement. The Annual Report also contains performance
information and is available upon request and without charge by writing to any
of the addresses on the inside cover of this Prospectus.
 
<TABLE>
<CAPTION>
                             INCOME FROM INVESTMENT                                                                     
                                   OPERATIONS                                                                           
                           ---------------------------                                                                  
                                                        DISTRI-                              RATIO                      
                                                        BUTIONS                                OF                       
                                                           TO                       RATIO     NET                       
                                      NET      TOTAL     SHARE-    NET                OF    INVEST-                     
                                    REALIZED    LOSS    HOLDERS   ASSET              NET      MENT               NET    
                    NET               AND       FROM      FROM    VALUE            EXPENSES  INCOME   PORT-     ASSETS  
                   ASSET     NET   UNREALIZED INVEST-     NET       AT                TO       TO     FOLIO     AT END  
                 VALUE AT  INVEST-  LOSS ON     MENT    INVEST-    END             AVERAGE  AVERAGE   TURN-       OF    
                 BEGINNING  MENT    INVEST-    OPERA-     MENT      OF     TOTAL     NET      NET     OVER      PERIOD  
                 OF PERIOD INCOME   MENTS(a)   TIONS     INCOME   PERIOD RETURN(b)  ASSETS   ASSETS  RATE(c)  (IN 000'S)
                 --------- ------- ---------- --------  --------  ------ --------- -------- -------- -------  ----------
FOR THE PERIOD JANUARY 5, 1994 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,                                         
- -------------------------------------------------------------------------------- 
<S>              <C>       <C>     <C>        <C>       <C>       <C>    <C>       <C>      <C>      <C>      <C>       
1994-                                                                                                                   
Institutional                                                                                                           
Shares..........  $10.00   $0.4648  $(0.7617) $(0.2969) $(0.4648) $9.24    (3.00)% 0.45%(d) 6.48%(d) 288.25%   $24,508  
<CAPTION>                                                                                                                         

                     RATIOS ASSUMING          
                       NO EXPENSE         
                       LIMITATIONS        
                    -----------------     
                              RATIO       
                                OF        
                               NET        
                     RATIO   INVEST-      
                       OF      MENT       
                    EXPENSES  INCOME      
                       TO       TO        
                    AVERAGE  AVERAGE     
                      NET      NET        
                     ASSETS   ASSETS      
                    -------- --------     
FOR THE PERIOD JANUARY 5, 1994 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
- -------------------------------------------------------------------------------
<S>                 <C>       <C>      
1994-               
Institutional     
Shares..........    1.46%(d)  5.47%(d)       
</TABLE> 

- ----------
(a) Includes balancing effect of calculating per share amounts.
(b) Assumes investment at net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(c) Includes effect of mortgage dollar roll transactions.
(d) Annualized.
 
                                       8
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a total return
consisting of capital appreciation and income that exceeds the total return of
the Lehman Brothers Aggregate Bond Index (the "Index"). There can be no
assurance that the Fund will achieve its investment objective.
 
  The Fund will seek to achieve its objective by investing, under normal market
conditions, at least 65% of its total assets in fixed income securities,
including securities issued or guaranteed by the U.S. Government or its
agencies, authorities, instrumentalities or sponsored enterprises, corporate
securities, mortgage-backed securities, and asset-backed securities. A number
of investment strategies will be used to achieve the Fund's investment
objective, including market sector selection, determination of yield curve
exposure, and issuer selection. In addition, the Investment Adviser will
attempt to take advantage of pricing inefficiencies in the fixed income
markets. Market sector selection is the underweighting or overweighting of one
or more of the five market sectors (i.e., U.S. treasuries, U.S. government
agencies, corporate securities, mortgage-backed securities and asset-backed
securities) in which the Fund primarily invests. The decision to overweight or
underweight a given market sector is based on expectations of future yield
spreads between different sectors. Yield curve exposure strategy consists of
overweighting or underweighting different maturity sectors to take advantage of
the shape of the yield curve. Issuer selection is the purchase and sale of
corporate securities based on a corporation's current and expected credit
standing. To take advantage of price discrepancies between securities resulting
from supply and demand imbalances or other technical factors, the Fund may
simultaneously purchase and sell comparable, but not identical, securities. The
Investment Adviser will have access to the research of, and proprietary
technical models developed by, Goldman Sachs and will apply quantitative and
qualitative analysis in determining the appropriate allocations among the
categories of issuers and types of securities.
 
  The fixed income securities in which the Fund invests, at the time of
investment, will be rated at least BBB or Baa, or their equivalent ratings, by
any one of Standard & Poor's, Moody's, or Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality. A security will be deemed to have met this requirement if it receives
the minimum required rating from at least one of such rating organizations even
though it has been rated below the minimum rating by one or more other rating
organizations. If a fixed income security that at the time of purchase
satisfies the Fund's minimum rating criteria is subsequently downgraded below
such rating criteria, the Fund will not be required to dispose of such
security. If a downgrading occurs, the Investment Adviser will consider what
action, including the sale of such security, is in the best interest of the
Fund. In most instances, the Fund expects to dispose of a downgraded security
within a reasonable time after such downgrading. Fixed income securities rated
BBB by Standard & Poor's or Fitch or Baa by Moody's are considered medium grade
obligations with speculative characteristics, and adverse economic conditions
or changing circumstances may weaken capacity to pay interest and repay
principal. See Appendix A to the Additional Statement for a description of the
securities ratings.
 
  PORTFOLIO DURATION. Under normal market conditions, the Fund will maintain a
dollar weighted average portfolio duration within a range equal to the duration
of the Index plus or minus one year. The Investment Adviser may, however,
decrease the Fund's average duration without limit if the Investment Adviser
believes that a shorter duration is warranted by its outlook for interest rates
or market conditions. Duration represents the weighted average maturity of
expected cash flows on a debt obligation, discounted to present value. The
longer the duration of a debt obligation, the more sensitive its value is to
changes in interest rates. Maturity measures only the time until final payment
is due on a bond or other debt security; it takes no account of the pattern of
a security's cash flows over time. In computing the duration of the portfolio
and the Index, the duration of debt obligations that are subject to prepayment
or
 
                                       9
<PAGE>
 
redemption by the issuer are determined based upon estimates of the rate and
timing of prepayment or redemption. There is no limitation as to the Fund's
maximum weighted average portfolio maturity or the maximum stated maturity with
respect to individual securities.
 
  The Fund may use various techniques to shorten or lengthen the dollar
weighted average duration of its portfolio, including the acquisition of
securities at a premium or discount, and entering into transactions in options,
futures contracts, options on futures, interest rate and mortgage swaps and
interest rate caps, floors and collars.
 
  THE INDEX. The Index currently includes U.S. Government securities and fixed
rate, publicly issued, U.S. dollar denominated fixed-income securities rated at
least BBB or Baa or in their equivalent ratings category by Standard & Poor's,
Moody's or Fitch. The securities currently included in the Index have at least
one year remaining to maturity; have an outstanding principal amount of at
least $100 million; and are issued by the following types of issuers, with each
category receiving a different weighting in the Index: U.S. Treasury; agencies,
authorities or instrumentalities of the U.S. Government; issuers of mortgage-
backed securities; utilities; industrial issuers; financial institutions;
foreign issuers; and issuers of asset-backed securities.
 
  The Lehman Brothers Aggregate Bond Index is a trademark of Lehman Brothers.
Inclusion of a security in the Index does not imply an opinion by Lehman
Brothers as to its attractiveness or appropriateness for investment. Although
Lehman Brothers obtains factual information used in connection with the Index
from sources which it considers reliable, Lehman Brothers claims no
responsibility for the accuracy, completeness or timeliness of such information
and has no liability to any person for any loss arising from results obtained
from the use of the index data.
 
  TEMPORARY AND OTHER INVESTMENTS. When in the judgment of the Investment
Adviser market conditions warrant, the Fund may for temporary defensive
purposes hold part or all of its assets in cash (including foreign currencies),
cash equivalents, such as certificates of deposit, commercial paper, time
deposits and bankers' acceptances issued by a bank the unsecured commercial
paper of which is rated A-1 by Standard & Poor's or P-1 by Moody's, short-term
securities issued or guaranteed as to principal and interest by the U.S.
Government, its agencies or instrumentalities and repurchase agreements
collateralized by such instruments ("Short-Term Investments").
 
  To the extent consistent with its investment objective, the Fund's
investments in fixed income securities may also include Short-Term Investments,
foreign securities, convertible securities, custody receipts and municipal
securities.
 
  An investment in foreign securities may involve risks not present in domestic
investments. Foreign issuers may not be subject to accounting standards or
governmental supervision comparable to that applicable to domestic issuers and
there may be less publicly available information about their operations.
Foreign markets generally provide less liquidity (and thus potentially greater
price volatility), and typically provide fewer regulatory protections for
investors. Foreign securities can be affected by political and financial
instability abroad.
 
  The Fund may invest up to 25% of its net assets in obligations of domestic
and foreign issuers which are denominated in currencies other than the U.S.
dollar. The non-dollar denominated fixed income securities in which the Fund
may invest will be rated, at the time of investment, at least AA by Standard &
Poor's, Aa by Moody's, or AA by Fitch, or if unrated by such rating
organizations, determined by the Investment Adviser to be of comparable credit
quality.
 
                                       10
<PAGE>
 
  The performance of investments in non-dollar denominated securities will
depend on, among other things, the strength of the foreign currency against the
dollar and the interest rate environment in the country issuing the foreign
currency in which the instrument is denominated. Absent events which could
otherwise affect the value of non-dollar securities (such as a change in the
political climate or an issuer's credit quality), appreciation in the value of
the foreign currencies in which the Fund's portfolio securities may be
denominated generally can be expected to increase the U.S. dollar value of the
Fund's non-dollar securities. A rise in foreign interest rates or a decline in
the U.S. dollar value of foreign currencies relative to the U.S. dollar
generally can be expected to depress the value of the Fund's non-dollar
denominated securities. The Fund may engage in certain currency management
techniques, including options and futures on currencies, forward foreign
currency exchange contracts and currency swaps, to hedge the Fund's investments
in non-U.S. dollar denominated securities.
 
  INTEREST RATE TECHNIQUES. It is expected that the Fund will employ certain
interest rate management techniques. These techniques will be used both to
hedge the interest rate risks associated with the Fund's portfolio securities
and to seek to increase total return. Such techniques include options, futures
contracts, options on futures contracts, interest rate and mortgage swaps,
interest rate caps, floors and collars, forward commitments, lending portfolio
securities, repurchase agreements and mortgage dollar rolls.
 
  NON-FUNDAMENTAL POLICIES. Except as otherwise stated under "Investment
Restrictions," the Fund's investment objective and policies are not fundamental
and may be changed without a vote of shareholders. If there is a change in the
Fund's investment objective, shareholders should consider whether the Fund
remains an appropriate investment in light of their then current financial
positions and needs. There can be no assurance that the Fund will be successful
in achieving its investment objective. An investment in shares of the Fund does
not constitute a complete investment program. Investors may wish to complement
an investment in the Fund with other types of investments.
 
                               INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Asset Management, a separate
operating division of Goldman Sachs. The management services provided by the
Investment Adviser are subject to the general supervision of the Trust's Board
of Trustees. The Investment Adviser serves a wide range of clients including
private and public pension funds, endowments, foundations, banks, thrifts,
insurance companies, corporations, and private investors and family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and expertise of
Goldman Sachs, whose investment research effort is one of the largest in the
industry. The in-depth information and analyses generated by Goldman Sachs'
research analysts, economists and portfolio strategists are available to the
Investment Adviser.
 
                        OTHER INVESTMENTS AND PRACTICES
 
U.S. GOVERNMENT SECURITIES
 
  U.S. Government securities are obligations issued or guaranteed by the U.S.
Government or its agencies, authorities, instrumentalities or sponsored
enterprises. Some U.S. Government securities, such
 
                                       11
<PAGE>
 
as Treasury bills, notes and bonds, which differ only in their interest rates,
maturities and times of issuance, are supported by the full faith and credit of
the United States of America. Others, such as obligations issued or guaranteed
by U.S. Government agencies, authorities, instrumentalities or sponsored
enterprises are supported either by (a) the full faith and credit of the U.S.
Government (such as securities of the Small Business Administration), (b) the
right of the issuer to borrow from the Treasury (such as securities of the
Federal Home Loan Banks), (c) the discretionary authority of the U.S.
Government to purchase the agency's obligations (such as securities of the
Federal National Mortgage Association), or (d) only the credit of the issuer.
No assurance can be given that the U.S. Government will continue to provide
financial support to U.S. Government agencies, authorities, instrumentalities
or sponsored enterprises in the future.
 
  Securities guaranteed as to principal and interest by the U.S. Government,
its agencies, authorities, instrumentalities or sponsored enterprises are
deemed to include (a) securities for which the payment of principal and
interest is backed by a guaranty of the U.S. Government or its agencies,
authorities, instrumentalities or sponsored enterprises and (b) participations
in loans made to foreign governments or their agencies that are so guaranteed.
The secondary market for certain of these participations is limited. Such
participations may therefore be regarded as illiquid.
 
  The Fund may also invest in separately traded principal and interest
components of securities guaranteed or issued by the U.S. Government or its
agencies, instrumentalities or sponsored enterprises if such components are
traded independently under the Separate Trading of Registered Interest and
Principal of Securities program ("STRIPS") or any similar program sponsored by
the U.S. Government. The Fund may invest in U.S. Government securities which
are zero coupon or deferred interest securities.
 
MORTGAGE-BACKED SECURITIES
 
  The Fund may invest in mortgage-backed securities. Mortgage-backed securities
represent direct or indirect participations in or obligations collateralized by
and payable from mortgage loans secured by real property. Each mortgage pool
underlying mortgage-backed securities will consist of mortgage loans evidenced
by promissory notes secured by first mortgages or first deeds of trust or other
similar security instruments creating a first lien on owner and non-owner
occupied one-unit to four-unit residential properties, multifamily residential
properties, agricultural properties, commercial properties and mixed use
properties.
 
  MORTGAGE PASS-THROUGH SECURITIES. The Fund may invest in mortgage pass-
through securities, which are fixed or adjustable rate mortgage-backed
securities that provide for monthly payments that are a "pass-through" of the
monthly interest and principal payments (including any prepayments) made by the
individual borrowers on the pooled mortgage loans, net of any fees or other
amounts paid to any guarantor, administrator and/or servicer of the underlying
mortgage loans.
 
  MULTIPLE CLASS MORTGAGE-BACKED SECURITIES AND COLLATERALIZED MORTGAGE
OBLIGATIONS. The Fund may invest in collateralized mortgage obligations
("CMOs"), which are multiple class mortgage-backed securities. CMOs provide an
investor with a specified interest in the cash flow from a pool of underlying
mortgages or of other mortgage-backed securities. CMOs are issued in multiple
classes, each with a specified fixed or adjustable interest rate and a final
scheduled distribution date. In most cases, payments of principal are applied
to the CMO classes in the order of their respective stated maturities, so that
no principal payments will be made on a CMO class until all other classes
having an earlier stated maturity date are paid in full. Sometimes, however,
CMO classes are "parallel pay" (i.e., payments of principal are made to two or
more classes concurrently).
 
                                       12
<PAGE>
 
  STRIPPED MORTGAGE-BACKED SECURITIES. The Fund may also invest in stripped
mortgage-backed securities ("SMBS"), which are derivative multiple class
mortgage-backed securities. SMBS are usually structured with two classes that
receive different proportions of the interest and principal distributions from
a pool of mortgage loans. If the underlying mortgage loans experience greater
than anticipated prepayments of principal, the Fund may fail to fully recoup
its initial investment in these securities. Although the market for such
securities is increasingly liquid, the Investment Adviser, in accordance with
guidelines and standards adopted by the Board of Trustees, may determine that
government issued SMBS are not readily marketable. If so, these securities will
be considered illiquid for purposes of the Fund's limitation on investments in
illiquid securities.
 
  AGENCY MORTGAGE SECURITIES. The Fund may invest in mortgage-backed securities
issued or guaranteed by the U.S. Government or any of its agencies,
instrumentalities or sponsored enterprises, including but not limited to
Government National Mortgage Association ("Ginnie Mae"), Federal National
Mortgage Association ("Fannie Mae") and Federal Home Loan Mortgage Corporation
("Freddie Mac"). Ginnie Mae securities are backed by the full faith and credit
of the U.S. Government, which means that the U.S. Government guarantees that
the interest and principal will be paid when due. Fannie Mae securities and
Freddie Mac securities are not backed by the full faith and credit of the U.S.
Government; however, these enterprises have the ability to obtain financing
from the U.S. Treasury. There are several types of agency mortgage securities
currently available, including, but not limited to, guaranteed mortgage pass-
through certificates and multiple class securities.
 
  PRIVATELY ISSUED MORTGAGE-BACKED SECURITIES. The Fund may also invest in
mortgage-backed securities issued by trusts or other entities formed or
sponsored by private originators of and institutional investors in mortgage
loans and other non-governmental entities (or representing custodial
arrangements administered by such institutions). These private originators and
institutions include savings and loan associations, mortgage bankers,
commercial banks, insurance companies, investment banks and special purpose
subsidiaries of the foregoing. Privately issued mortgage-backed securities are
generally backed by pools of conventional (i.e., non-government guaranteed or
insured) mortgage loans. Since such mortgage-backed securities normally are not
guaranteed by an entity having the credit standing of Ginnie Mae, Fannie Mae or
Freddie Mac, in order to receive a high quality rating, they normally are
structured with one or more types of "credit enhancement." Such credit
enhancements fall generally into two categories: (1) liquidity protection and
(2) protection against losses resulting after default by a borrower and
liquidation of the collateral. Liquidity protection refers to the providing of
cash advances to holders of mortgage-backed securities when a borrower on an
underlying mortgage fails to make its monthly payment on time. Protection
against losses resulting after default and liquidation is designed to cover
losses resulting when, for example, the proceeds of a foreclosure sale are
insufficient to cover the outstanding amount on the mortgage. Such protection
may be provided through guarantees, insurance policies or letters of credit,
through various means of structuring the transaction or through a combination
of such approaches.
 
ASSET-BACKED SECURITIES
 
  The Fund may invest in asset-backed securities, which represent
participations in, or are secured by and payable from, pools of assets such as
motor vehicle installment sale contracts, installment loan contracts, leases on
various types of real and personal property, receivables from revolving credit
(credit card) agreements and other categories of receivables. Such asset pools
are securitized through the use of privately-formed trusts or special purpose
entities. Payments or distributions of principal and interest may be guaranteed
up to certain amounts and for a certain time period by a letter of credit or a
pool insurance policy issued by a financial institution unaffiliated with the
trust or corporation, or other credit enhancements may be present. Asset-backed
securities present credit risks that are not presented by mortgage-backed
securities because asset-backed securities generally do not have the benefit of
a security interest in collateral that is comparable to mortgage assets.
 
                                       13
<PAGE>
 
CORPORATE DEBT OBLIGATIONS
 
  The Fund may invest in corporate debt obligations, including obligations of
industrial, utility and financial issuers. In addition to obligations of
corporations, corporate debt obligations include bank obligations and zero
coupon securities, issued by financial institutions and corporations. Corporate
debt obligations are subject to the risk of an issuer's inability to meeting
principal and interest payments on the obligations and may also be subject to
price volatility due to such factors as market interest rates, market
perception of the creditworthiness of the issuer and general market liquidity.
 
MUNICIPAL SECURITIES
 
  Municipal securities consist of bonds, notes and other instruments issued by
or on behalf of states, territories and possessions of the United States
(including the District of Columbia) and their political subdivisions, agencies
or instrumentalities, the interest on which is exempt from regular federal
income tax. Municipal securities are often issued to obtain funds for various
public purposes and also include "private activity bonds" or industrial
development bonds, which are issued by or on behalf of public authorities to
obtain funds for privately operated facilities. Due to their tax exempt status,
the yields and market prices of municipal securities may be adversely affected
by changes in tax rates and policies, which may have less effect on the market
for taxable fixed income securities. Moreover, certain types of municipal
securities, such as housing revenue bonds, involve prepayment risks which could
affect the yield on such securities. Investments in municipal securities are
subject to the risk that the issuer could default on its obligations. Such a
default could result from the inadequacy of the sources of revenues from which
interest and principal payments are to be made or the assets collateralizing
such obligations. Revenue bonds, including private activity bonds, are backed
only by specific assets or revenue sources and not by the full faith and credit
of the governmental issuer. The Fund's distributions to shareholders of any
income it earns from Municipal Securities will not be tax-exempt.
 
CUSTODIAL RECEIPTS
 
  The Fund may acquire custodial receipts in respect of securities issued or
guaranteed as to principal and interest by the U.S. Government, its agencies,
authorities, instrumentalities or sponsored enterprises. Such custodial
receipts evidence ownership of future interest payments, principal payments or
both on certain notes or bonds issued by the U.S. Government or its agencies or
instrumentalities. For certain securities law purposes, custodial receipts are
not considered obligations of the U.S. Government.
 
CONVERTIBLE SECURITIES
 
  Convertible securities may include corporate notes or preferred stock but are
ordinarily a long-term debt obligation of the issuer convertible at a stated
exchange rate into common stock of the issuer. As with all debt securities, the
market value of convertible securities tends to decline as interest rates
increase and, conversely, to increase as interest rates decline. Convertible
securities generally offer lower interest or dividend yields than non-
convertible securities of similar quality. However, when the market price of
the common stock underlying a convertible security exceeds the conversion
price, the price of the convertible security tends to reflect the value of the
underlying common stock. As the market price of the underlying common stock
declines, the convertible security tends to trade increasingly on a yield
basis, and thus may not depreciate to the same extent as the underlying common
stock. Convertible securities in which the Fund invests will be subject to the
same rating criteria as its other investments in fixed income securities.
 
INVERSE FLOATING RATE SECURITIES
 
  The Fund may invest in "leveraged" inverse floating rate debt instruments
("inverse floaters"). The interest rate on an inverse floater resets in the
opposite direction from the market rate of interest to which
 
                                       14
<PAGE>
 
the inverse floater is indexed. An inverse floater may be considered to be
leveraged to the extent that its interest rate varies by a magnitude that
exceeds the magnitude of the change in the index rate of interest. The higher
the degree of leverage of an inverse floater, the greater the volatility of its
market value.
 
OPTIONS ON SECURITIES AND SECURITIES INDICES
 
  WRITING COVERED OPTIONS. The Fund may write (sell) covered call and put
options on any securities in which it may invest or on any securities index
composed of securities in which it may invest. A call option grants the
purchaser the right to buy, and obligates the writer to sell, the underlying
security at the exercise price if the option is exercised during the option
period. A put option grants the purchaser the right to sell, and obligates the
writer to buy, the underlying security at the exercise price if the option is
exercised during the option period. All call options written by the Fund are
covered, which means that the Fund will own the securities subject to the
option so long as the option is outstanding. All put options written by the
Fund are covered, which means that the Fund would have deposited with its
custodian cash, or high grade, liquid debt securities with a value at least
equal to the exercise price of the put option. Call and put options written by
the Fund will also be considered to be covered to the extent that the Fund's
liabilities under such options are wholly or partially offset by its rights
under call and put options purchased by the Fund.
 
  PURCHASING OPTIONS. The Fund may purchase put and call options on any
securities in which it may invest or on any securities index composed of
securities in which it may invest.
 
  YIELD CURVE OPTIONS. The Fund may purchase and write options on the yield
"spread," or yield differential between two securities. Such transactions are
referred to as "yield curve" options. In contrast to other types of options, a
yield curve option is based on the difference between the yields of designated
securities, rather than the prices of the individual securities, and is settled
through cash payments. Accordingly, a yield curve option is profitable to the
holder if this differential widens (in the case of a call) or narrows (in the
case of a put), regardless of whether the yields of the underlying securities
increase or decrease. All yield curve options written by the Fund will be
covered in the manner described under "Writing Covered Options."
 
  RISKS ASSOCIATED WITH OPTIONS TRANSACTIONS. The Fund may purchase and write
such options on securities and indices that are listed on a national or foreign
securities exchange or traded in the over-the-counter market. There is no
assurance that a liquid secondary market on a domestic or foreign options
exchange will exist for any particular exchange-traded option or at any
particular time. If the Fund is unable to effect a closing purchase transaction
with respect to covered options it has written, the Fund will not be able to
sell the underlying securities or dispose of assets held in a segregated
account until the options expire or are exercised. Similarly, if the Fund is
unable to effect a closing sale transaction with respect to options it has
purchased, it would have to exercise the options in order to realize any profit
and will incur transaction costs upon the purchase or sale of the underlying
securities. In a closing purchase or sale transaction, the Fund acquires a
position that offsets and cancels an option position then held by the Fund.
 
  The Fund may purchase and sell options traded over-the-counter with broker-
dealers who make markets in these options. The ability to terminate over-the-
counter options is more limited than with exchange-traded options and may
involve the risk that broker-dealers participating in such transactions will
not fulfill their obligations. Until such time as the staff of the SEC changes
its position, the Fund will treat purchased over-the-counter options and all
assets used to cover written over-the-counter options as illiquid securities.
However, for options written with primary dealers in U.S. Government securities
pursuant to an agreement requiring a closing purchase transaction at a formula
price, the amount of illiquid securities may be calculated with reference to a
formula approved by the SEC staff.
 
                                       15
<PAGE>
 
  The writing and purchase of options is a highly specialized activity which
involves investment techniques and risks different from those associated with
ordinary portfolio securities transactions. The successful use of options for
hedging purposes depends in part on the Investment Adviser's ability to predict
future price fluctuations and the degree of correlation between the options and
securities markets. If the Investment Adviser is incorrect in its determination
of the correlation between the securities or indices on which the options are
written and purchased and the securities in the Fund's investment portfolio, or
with respect to yield curve options, the direction or the extent of the
movement of the yield differential, the investment performance of the Fund will
be less favorable than it would have been in the absence of such option
transactions. The Fund pays brokerage commissions or spreads in connection with
its options transactions. The writing of options could significantly increase
the Fund's portfolio turnover rate.
 
FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS
 
  To hedge against changes in interest rates, securities prices or currency
exchange rates or, except in the case of currency related contracts, to seek to
increase total return, the Fund may purchase and sell various kinds of futures
contracts, and purchase and write call and put options on any such futures
contracts. The Fund will engage in futures and related options transactions
only for bona fide hedging purposes as defined in regulations of the
Commodities Futures Trading Commission or to seek to increase total return to
the extent permitted by such regulations.
 
  The Fund may not purchase or sell futures contracts or purchase or sell
related options to increase total return, except for closing purchase or sale
transactions, if immediately thereafter the sum of the amount of initial margin
deposits on and premiums paid for the Fund's outstanding positions in futures
and options on futures entered into for the purpose of seeking to increase
total return rather than hedging would exceed 5% of the market value of the
Fund's net assets. Transactions in futures contracts and options on futures
involve brokerage costs, require margin deposits and, in the case of contracts
and options obligating the Fund to purchase securities or currencies, require
the Fund to segregate cash and liquid, high grade debt securities with a value
equal to the amount of the Fund's obligations.
 
  While transactions in futures contracts and options on futures may reduce
certain risks, such transactions themselves entail certain other risks. See
"Investment Objectives and Policies--Futures Contracts and Options on Futures
Contracts" in the Additional Statement. Thus, while the Fund may benefit from
the use of futures and options on futures, unanticipated changes in interest
rates, securities prices or currency exchange rates may result in a poorer
overall performance for the Fund than if it had not entered into any futures
contracts or options transactions. The loss incurred by the Fund in writing
options on futures is potentially unlimited and may exceed the amount of the
premium received.
 
  The use of futures may increase the volatility of the Fund's net asset value.
The profitability of the Fund's trading in futures to increase total return
will depend on the Investment Adviser's ability to correctly analyze the
futures markets. In addition, because of the low margin deposits normally
required in futures trading, a relatively small price movement in a futures
contract may result in substantial losses to the Fund. Further, futures trading
may be illiquid, and exchanges may limit fluctuations in futures contract
prices during a single day.
 
  In the event of an imperfect correlation between a futures position and a
portfolio position which is intended to be protected, the desired protection
may not be obtained and the Fund may be exposed to risk of loss. In addition,
it is not possible to hedge fully or perfectly against changes in the value of
securities denominated in foreign currencies because the value of such
securities is also likely to fluctuate
 
                                       16
<PAGE>
 
as a result of independent factors not related to currency fluctuations.
Therefore, perfect correlation between the Fund's futures positions and
portfolio positions will be impossible to achieve. The Fund's transactions in
foreign currency, forward foreign currency exchange contracts, options and
futures contracts may be limited by the requirements of the Internal Revenue
Code of 1986, as amended (the "Code") for qualification as a regulated
investment company.
 
INTEREST RATE, MORTGAGE AND CURRENCY SWAPS AND INTEREST RATE CAPS, FLOORS AND
COLLARS
 
  The Fund may enter into interest rate, mortgage and currency swaps for
hedging purposes and may also enter into interest rate and mortgage swaps to
seek to increase total return. The Fund may also enter into other types of
interest rate swap arrangements such as caps, floors and collars. Interest rate
swaps involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, such as an exchange of fixed rate
payments for floating rate payments. Mortgage swaps are similar to interest
rate swaps in that they represent commitments to pay and receive interest. The
notional principal amount, however, is tied to a reference pool or pools of
mortgages. Currency swaps involve the exchange of their respective rights to
make or receive payments in specified currencies. The purchase of an interest
rate cap entitles the purchaser, to the extent that a specified index exceeds a
predetermined interest rate, to receive payments of interest on a notional
principal amount from the party selling said interest rate cap. The purchase of
an interest rate floor entitles the purchaser, to the extent that a specified
index falls below a predetermined interest rate, to receive payment of interest
on a notional principal amount from the party selling such interest rate floor.
An interest rate collar is the combination of a cap and a floor that preserves
a certain return within a predetermined range of interest rates. Since interest
rate, mortgage and currency swaps, caps, floors and collars are individually
negotiated, the Fund expects to achieve an acceptable degree of correlation
between its portfolio investments and its swap, cap, floor and collar positions
entered into for hedging purposes.
 
  The Fund will enter into interest rate and mortgage swaps only on a net
basis, which means that the two payment streams are netted out, with the Fund
receiving or paying, as the case may be, only the net amount of the two
payments. Interest rate and mortgage swaps do not involve the delivery of
securities, other underlying assets or principal. Accordingly, the risk of loss
with respect to interest rate and mortgage swaps is limited to the net amount
of payments that the Fund is contractually obligated to make. If the other
party to an interest rate swap defaults, the Fund's risk of loss consists of
the net amount of payments that the Fund is contractually entitled to receive,
if any. In contrast, currency swaps usually involve the delivery of the entire
principal amount of one designated currency in exchange for the other
designated currency. Therefore, the entire principal value of a currency swap
is subject to the risk that the other party to the swap will default on its
contractual delivery obligations. The Fund will maintain in a segregated
account with the Fund's custodian cash and liquid, high grade debt securities
equal to the net amount, if any, of the excess of the Fund's obligations over
its entitlements with respect to swap transactions. To the extent that the net
amount of a swap is held in such segregated account, the Fund and the
Investment Adviser believe that swaps do not constitute senior securities under
the Investment Company Act of 1940, as amended (the "Act") and, accordingly,
will not treat them as being subject to the Fund's borrowing restriction.
 
  The Fund will not enter into interest rate, mortgage or currency swaps or
interest rate cap, floor and collar transactions unless the unsecured
commercial paper, senior debt or claims paying ability of the other party is
rated either AA or A-1 or better by Standard & Poor's or Aa or P-1 or better by
Moody's or, if unrated by such rating organizations, determined to be of
comparable quality by the Investment Adviser.
 
  The use of interest rate, mortgage and currency swaps, as well as interest
rate caps, floors and collars, is a highly specialized activity which involves
investment techniques and risks different from those
 
                                       17
<PAGE>
 
associated with ordinary portfolio securities transactions. If the Investment
Adviser is incorrect in its forecasts of market values, interest rates and
currency exchange rates, the investment performance of the Fund would be less
favorable than it would have been if this investment technique were not used.
The staff of the SEC currently takes the position that swaps, caps, floors and
collars are illiquid and thus subject to the Fund's 15% limitation on illiquid
securities.
 
  RISKS OF DERIVATIVE TRANSACTIONS. The Fund's transactions in interest rate,
mortgage and currency swaps and interest rate caps, floors and collars,
options, futures and options on futures and currency forward contracts involve
certain risks, including a possible lack of correlation between changes in the
value of hedging instruments and the portfolio assets being hedged, the
potential illiquidity of the markets for derivative instruments, the risks
arising from the margin requirements and related leverage factors associated
with such transactions. The use of these management techniques to seek to
increase total return also involves the risk of loss if the Investment Adviser
is incorrect in its expectation of fluctuations in securities prices or
interest rates.
 
ILLIQUID SECURITIES
 
  The Fund will not invest more than 15% of the value of its net assets in
securities which are illiquid, including securities that are not readily
marketable, repurchase agreements maturing in more than seven days, interest
rate, mortgage and currency swaps, interest rate caps, floors and collars,
certain over-the-counter options, certain SMBS and securities offered in the
United States that are restricted as to resale. However, a restricted security
is not considered to be illiquid if the Trustees of the Trust determine, based
upon the Investment Adviser's continuing review of the trading markets for the
specific restricted security, under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale under Rule 144A under the
Securities Act of 1933 is liquid. In addition, a repurchase agreement which by
its terms can be liquidated before its nominal fixed term on seven days or less
notice is regarded as a liquid instrument. Subject to the 15% limitation on
illiquid investments, the Fund may acquire U.S. Government securities in a
private placement.
 
  Since it is not possible to predict with assurance exactly how the market for
restricted securities sold and offered under Rule 144A will develop, the Board
of Trustees will carefully monitor the Fund's investments in these securities,
focusing on such important factors, among others, as valuation, credit quality,
liquidity and availability of information. This investment practice could have
the effect of increasing the level of illiquidity in the Fund to the extent
that qualified institutional buyers become for a time uninterested in
purchasing these restricted securities.
 
REPURCHASE AGREEMENTS
 
  The Fund may enter into repurchase agreements with dealers in U.S. Government
securities and member banks of the Federal Reserve System which furnish
collateral at least equal in value or market price to the amount of their
repurchase obligation. In a repurchase agreement, the Fund purchases a debt
security from a seller which undertakes to repurchase the security at a
specified resale price on an agreed future date (ordinarily a week or less).
The resale price generally exceeds the purchase price by an amount which
reflects an agreed-upon market interest rate for the term of the repurchase
agreement. The primary risk is that, if the seller defaults, the Fund might
suffer a loss to the extent that the proceeds from the sale of the underlying
securities and other collateral held by the Fund in connection with the related
repurchase agreement are less than the repurchase price. Repurchase agreements
maturing in more than seven days are considered by the Fund to be illiquid. In
addition, the Fund, together with other
 
                                       18
<PAGE>
 
registered investment companies having advisory agreements with the Adviser,
may transfer uninvested cash balances into a single joint account, the daily
aggregate balance of which will be invested in one or more repurchase
agreements.
 
MORTGAGE DOLLAR ROLLS
 
  The Fund may enter into mortgage "dollar rolls" in which the Fund sells
securities for delivery in the current month and simultaneously contracts with
the same counterparty to repurchase similar (same type, coupon and maturity),
but not identical securities on a specified future date. During the roll
period, the Fund loses the right to receive principal and interest paid on the
securities sold. However, the Fund would benefit to the extent of any
difference between the price received for the securities sold and the lower
forward price for the future purchase (often referred to as the "drop") or fee
income plus the interest earned on the cash proceeds of the securities sold
until the settlement date of the forward purchase. Unless such benefits exceed
the income, capital appreciation and gain or loss due to mortgage prepayments
that would have been realized on the securities sold as part of the mortgage
dollar roll, the use of this technique will diminish the investment performance
of the Fund compared with what such performance would have been without the use
of mortgage dollar rolls. All cash proceeds will be invested in instruments
that are permissible investments for the Fund. The Fund will hold and maintain
in a segregated account until the settlement date cash or liquid, high grade
debt securities in an amount equal to the forward purchase price.
 
  For financial reporting and tax purposes, the Fund treats mortgage dollar
rolls as two separate transactions; one involving the purchase of a security
and a separate transaction involving a sale. The Fund does not currently intend
to enter into mortgage dollar rolls that are accounted for as a financing.
 
  Mortgage dollar rolls involve certain risks including the following: if the
broker-dealer to whom the Fund sells the security becomes insolvent, the Fund's
right to purchase or repurchase the mortgage-related securities subject to the
mortgage dollar roll may be restricted and the instrument which the Fund is
required to repurchase may be worth less than an instrument which the Fund
originally held. Successful use of mortgage dollar rolls will depend upon the
Investment Adviser's ability to manage its interest rate and mortgage
prepayment exposure. For these reasons, there is no assurance that mortgage
dollar rolls can be successfully employed.
 
WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES
 
  The Fund may purchase securities on a when-issued basis. When-issued
transactions arise when securities are purchased by the Fund with payment and
delivery taking place in the future in order to secure what is considered to be
an advantageous price and yield to the Fund at the time of entering into the
transaction. The Fund may also purchase securities on a forward commitment
basis. In a forward commitment transaction, the Fund contracts to purchase
securities for a fixed price at a future date beyond customary settlement time.
The Fund is required to hold and maintain in a segregated account until the
settlement date cash or liquid, high grade debt obligations in an amount
sufficient to meet the purchase price. Alternatively, the Fund may enter into
offsetting contracts for the forward sale of other securities that it owns. The
purchase of securities on a when-issued or forward commitment basis involves a
risk of loss if the value of the security to be purchased declines prior to the
settlement date. Although the Fund would generally purchase securities on a
when-issued or forward commitment basis with the intention of actually
acquiring securities for its portfolio, the Fund may dispose of a when-issued
security or forward commitment prior to settlement if the Investment Adviser
deems it appropriate to do so.
 
                                       19
<PAGE>
 
LENDING OF PORTFOLIO SECURITIES
 
  The Fund may also seek to increase its income by lending portfolio
securities. Under present regulatory policies, such loans may be made to
institutions, such as certain broker-dealers, and are required to be secured
continuously by collateral in cash, cash equivalents, or U.S. Government
securities maintained on a current basis in an amount at least equal to the
market value of the securities loaned. Cash collateral may be invested in cash
equivalents. If the Investment Adviser determines to make security loans, the
value of the securities loaned may not exceed 33 1/3% of the value of the total
assets of the Fund. See "Investment Restrictions" in the Additional Statement.
The Fund may experience a loss or delay in the recovery of its securities if
the institution with which it has engaged in a portfolio loan transaction
breaches its agreement with the Fund.
 
FOREIGN CURRENCY TRANSACTIONS AND OPTIONS
 
  The Fund may, to the extent it invests in securities denominated in a
currency other than the U.S. dollar, enter into forward foreign currency
exchange contracts in order to protect against adverse changes in future
foreign currency exchange rates. The Fund may enter into contracts to purchase
foreign currencies to protect against an anticipated rise in the U.S. dollar
price of securities it intends to purchase. The Fund may enter into contracts
to sell foreign currencies to protect against the decline in value of its
foreign currency denominated portfolio securities, or a decline in the value of
anticipated interest or dividends from such securities, due to a decline in the
value of foreign currencies against the U.S. dollar. Contracts to sell foreign
currency could limit any potential gain which might be realized by the Fund if
the value of the hedged currency increased.
 
  Currency exchange rates may fluctuate significantly over short periods of
time. They generally are determined by the forces of supply and demand in the
foreign exchange markets and the relative merits of investments in different
countries, actual or anticipated changes in interest rates and other complex
factors, as seen from an international perspective. Currency exchange rates
also can be affected unpredictably by intervention by U.S. or foreign
governments or central banks or the failure to intervene. Since a forward
foreign currency exchange contract is not guaranteed by an exchange or
clearinghouse, a default on the contract would deprive the Fund of unrealized
profits or force the Fund to cover its commitments for purchase or resale, if
any, at the current market price.
 
  The Fund's custodian will place cash or liquid, high grade debt securities
into a segregated account of the Fund in an amount equal to the value of the
Fund's total assets committed to the consummation of forward foreign currency
exchange contracts requiring the Fund to purchase foreign currencies. The
segregated account will be marked to market on a daily basis. Thus, if the
value of securities placed in the segregated account declines, additional cash
or securities will be placed in the account on a daily basis so that the value
of the account will equal the amount of the Fund's commitments with respect to
such contracts.
 
  The Fund may, to the extent it invests in foreign securities, purchase and
write put and call options on foreign currencies for the purpose of protecting
against declines in the dollar value of foreign portfolio securities and
anticipated income from such securities and against increases in the U.S.
dollar cost of foreign securities to be acquired. As with other kinds of
option-writing transactions, however, the writing of an option on foreign
currency will constitute only a partial hedge, up to the amount of the premium
received. If and when the Fund seeks to close out an option, the Fund could be
required to purchase or sell foreign currencies at disadvantageous exchange
rates, thereby incurring losses. The purchase of an option on foreign currency
may constitute an effective hedge against exchange rate fluctuations; however,
in the event of exchange rate movements adverse to the Fund's position, the
Fund may forfeit the entire amount of the premium plus related transaction
costs. Options on foreign currencies to be written or purchased by the Fund
will be traded on U.S. and foreign exchanges or over-the-counter.
 
                                       20
<PAGE>
 
OTHER INVESTMENT COMPANIES
 
  The Fund reserves the right to invest up to 10% of its total assets,
calculated at the time of purchase, in the securities of other investment
companies including business development companies and small business
investment companies. The Fund may not invest more than 5% of its total assets
in the securities of any one investment company or acquire more than 3% of the
voting securities of any other investment company. Pursuant to an exemptive
order obtained from the SEC, other investment companies in which the Fund may
invest include money market funds for which the Investment Adviser or any of
its affiliates serves as investment adviser. The Fund will indirectly bear its
proportionate share of any management fees and other expenses paid by
investment companies in which it invests in addition to the advisory fee paid
by the Fund. However, to the extent that the Fund invests in a money market
fund for which the Investment Adviser or any of its affiliates acts as adviser,
the advisory fee payable by the Fund to the Investment Adviser will be reduced
by an amount equal to the Fund's proportionate share of the advisory and
administration fees paid by such money market fund to the Investment Adviser or
any of its affiliates.
 
                                  RISK FACTORS
 
  The net asset value of the Fund's shares will change with changes in the
value of its portfolio securities. The net asset value of the shares of the
Fund can be expected to change as general levels of interest rates fluctuate.
Volatility may be greater during periods of general economic uncertainty and
interest rate fluctuation.
 
  The fixed income securities in the Fund's portfolio will generally tend to
decrease in value when interest rates rise and increase in value when interest
rates fall (although mortgage-backed and asset-backed securities will generally
have less potential for capital appreciation during periods of declining rates
than other securities). Because fixed income investments are interest rate
sensitive, the Fund's performance will depend in large part upon the ability of
the Fund to anticipate and respond to fluctuations in market interest rates and
to utilize the hedging and other active management techniques described above.
The yield on most interest only and principal only securities is extremely
sensitive to the rate of principal payments, including prepayments. Prepayments
with respect to such securities could result in the Fund failing to recoup its
initial investment even though the securities are rated in the highest credit
rating category. Operating results will also depend upon opportunities for the
investment of the Fund's assets, including the availability of suitable
securities.
 
  Derivative mortgage-backed securities are subject to different combinations
of interest rate and/or prepayment risk. In addition, particular derivative
securities may also be leveraged such that their exposure (i.e., price
sensitivity) to interest rate and/or prepayment risk is magnified. The
Investment Adviser may use derivative mortgage-backed securities and other
derivative securities consistently with the Fund's investment objective for a
variety of purposes including adjusting the average duration or interest rate
sensitivity of the Fund's portfolio or attempting to enhance the Fund's total
return. The Investment Adviser manages the risks and benefits of derivative
mortgage-backed securities and other derivative securities by prudent analysis,
selection and monitoring of such securities included in the Fund's portfolio.
 
  Fund shares may be expected to fluctuate in value. If shares are redeemed at
a price that is less than the price at which the shares were purchased, the
investor will experience a loss of principal.
 
  An investment in the Fund and the Fund's investments and practices entail
certain other risks, including the risk that an issuer may default on its
obligations, risks associated with investments in derivative securities,
mortgage and asset-backed securities and foreign securities and the risk that
return on an investment in the Fund may not exceed the return on the Index. For
a discussion of such risks, see "Summary--Risk Factors".
 
                                       21
<PAGE>
 
                            INVESTMENT RESTRICTIONS
 
  The Fund's investment objective and, except as discussed below, policies are
not fundamental and may be changed without a vote of shareholders. The Fund is
subject to certain investment restrictions which, as described in more detail
in the Additional Statement, are fundamental policies that cannot be changed
without the approval of a majority of the outstanding shares of the Fund. Among
other restrictions, the Fund may not, with respect to 75% of its total assets,
purchase securities of any one issuer (other than U.S. Government securities)
if more than 5% of its total assets would be invested in such issuer or invest
more than 25% of its total assets in the securities of issuers (including any
one foreign government, but excluding the U.S. Government) in any one industry.
The Fund may not borrow money, except to finance share redemptions and
portfolio settlements and from banks for temporary or short-term purposes,
provided that the Fund maintains asset coverage of 300% for all borrowings. As
a nonfundamental policy, the Fund may not purchase securities while borrowings
exceed 5% of the value of the Fund's total assets.
 
                               PORTFOLIO TURNOVER
 
  The Fund may engage in active short-term trading to benefit from yield
disparities among different issues of securities or among the different sectors
of the U.S. and foreign markets for fixed income securities, to seek short-term
profits during periods of fluctuating interest rates, or for other reasons.
Such trading will increase the Fund's portfolio turnover rate and may increase
the incidence of short-term capital gain (distributions of which are taxable to
shareholders as ordinary income). A high rate of portfolio turnover (100% or
higher) involves correspondingly greater expenses which must be borne by the
Fund and its shareholders and may under certain circumstances make it more
difficult for the Fund to qualify as a regulated investment company under the
Code. The portfolio turnover rate is calculated by dividing the lesser of the
dollar amount of sales or purchases of portfolio securities by the average
monthly value of the Fund's portfolio securities, excluding securities having a
maturity at the date of purchase of one year or less. The portfolio turnover
rate includes the effect of entering into mortgage dollar rolls.
 
                                   MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct and supervise the Fund's
daily business operations. The Additional Statement contains information as to
the identity of, and other information about, the Trustees and officers of the
Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Asset Management, One New York Plaza, New York, New York 10004,
a separate operating division of Goldman Sachs, acts as the investment adviser
of the Fund. Goldman Sachs was registered as an investment adviser in 1981. As
of January 31, 1995, Goldman Sachs Asset Management, together with its
affiliates, acted as investment adviser, administrator or distributor for
approximately $48.7 billion in assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Asset
Management, subject to the general supervision of the Trust's Board of
Trustees, manages the Fund's portfolio and provides for the administration of
all of the Fund's other affairs. It is the responsibility of the Investment
Adviser to make investment decisions for the Fund and to place purchase and
sale orders for the Fund's portfolio transactions. Such orders may be directed
to any broker including, to the extent and in the
 
                                       22
<PAGE>
 
manner permitted by applicable law, Goldman Sachs or its affiliates. Goldman
Sachs has agreed to permit the Fund to use the name "Goldman Sachs" or a
derivative thereof as part of the Fund's name for as long as the Investment
Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Jonathan A. Beinner, Theodore T. Sotir and
Richard C. Lucy. Messrs. Beinner and Lucy each specialize in investing in a
particular type of security the Fund may hold. Mr. Sotir helps with overall
portfolio strategy and is a member of the Investment Adviser's risk control
team. Mr. Beinner joined Goldman Sachs Asset Management in 1990 and is
currently a Vice President, after working in the trading and arbitrage group of
Franklin Savings Association. Mr. Sotir joined Goldman Sachs Asset Management
in 1993 and is currently a Vice President, after working as a portfolio manager
at Fidelity Management Trust Company. Prior to joining Fidelity, Mr. Sotir
worked for Goldman Sachs for six years. Mr. Lucy joined Goldman Sachs Asset
Management in 1992 and is currently a Vice President, after spending nine years
managing fixed income assets at Brown Brothers Harriman & Co.
 
  As compensation for the services rendered to the Fund by Goldman Sachs Asset
Management pursuant to the Investment Advisory Agreement, and the assumption by
Goldman Sachs Asset Management of the related expenses, the Fund pays Goldman
Sachs Asset Management a fee, computed daily and payable monthly, at an annual
rate equal to 0.40% of the Fund's average daily net assets. For the period
January 5, 1994 (commencement of operations) through October 31, 1994, the Fund
paid an advisory fee to the Investment Adviser equal on an annual basis to
0.40% of the Fund's average daily net assets.
 
  The Investment Adviser has voluntarily agreed to reduce or otherwise limit
certain expenses of the Fund (excluding advisory fees, payments to Service
Organizations (as defined below), taxes, interest and brokerage and litigation,
indemnification and other extraordinary expenses) to the extent such expenses
exceed 0.05% annually of the Fund's average net assets. Such reductions or
limits, if any, are calculated monthly on a cumulative basis and may be
discontinued or modified by the Investment Adviser at its discretion at any
time. The Investment Adviser has also agreed to reduce its fees payable (to the
extent of such fees) by the amount the Fund's expenses exceed the applicable
expense limitations imposed by state securities administrators. See
"Management--Expenses" in the Additional Statement.
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser, Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts and
other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities, currencies and
instruments as the Fund. Goldman Sachs and its affiliates will not have any
obligation to make available any information regarding their proprietary
activities or strategies, or the activities or strategies used for other
accounts managed by them, for the benefit of the management of the Fund and it
is not anticipated that the Investment Adviser will have access to proprietary
information for the purpose of managing the Fund. The results of the Fund's
investment activities, therefore, may differ from those of Goldman Sachs and
its affiliates and it is possible that the Fund could sustain losses during
periods in which Goldman Sachs and its affiliates and other accounts achieve
significant profits on their trading for proprietary or other accounts. From
time to time, the Fund's activities may be limited because of regulatory
restrictions applicable to Goldman Sachs and its affiliates, and/or their
internal policies designed to comply with such restrictions. See "Activities of
Goldman Sachs and its Affiliates and Other Accounts Managed by Goldman Sachs"
in the Additional Statement for further information.
 
                                       23
<PAGE>
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact Goldman
Sachs (as Transfer Agent) at the address or the telephone number set forth on
the inside front cover page of this Prospectus.
 
                                   DIVIDENDS
 
  The Fund intends to declare a daily dividend. Such dividend will accrue to
shareholders of record as of 3:00 p.m. Chicago time, and will be paid monthly.
Over the course of the fiscal year, dividends accrued and paid will constitute
all or substantially all of the Fund's net investment income. From time to time
a portion of such dividends may constitute a return of capital. The Fund also
intends that all net realized long-term and short-term capital gains will be
declared as a dividend at least annually. In determining amounts of capital
gains to be distributed, capital losses including any available capital loss
carryovers from prior years will be offset against capital gains.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination is
made as of 3:00 p.m. Chicago time.
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case, cash
payment will be made on the first Business Day of the succeeding month. Payment
of dividends with respect to capital gains, if any, when declared will be made
in additional shares of the Fund at the net asset value on the payment date,
unless cash distributions are elected. This election to receive dividends in
cash is initially made on the Account Information Form and may be changed upon
written notice to the Transfer Agent at any time prior to the record date for a
particular dividend or distribution. If cash dividends are elected with respect
to the Fund's monthly net investment income dividends, then cash dividends must
also be elected with respect to the non-long term capital gains component, if
any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or realized or unrealized appreciation of the Fund's portfolio securities.
Therefore, subsequent distributions (or portions thereof) of taxable income or
realized appreciation on such shares may be taxable to the investor even if the
net asset value of the shares is, as a result of the distributions, reduced
below the cost of such shares and the distributions (or portions thereof)
represent a return of a portion of the purchase price.
 
                                NET ASSET VALUE
 
  The net asset value per share of the Fund is calculated by the Fund's
custodian as of the close of regular trading on the New York Stock Exchange
(normally 3:00 p.m. Chicago time, 4:00 p.m. New York
 
                                       24
<PAGE>
 
time), immediately after determination of the income to be declared as a
dividend on each Business Day (as such term is defined under "Additional
Information"). Net asset value per share of each class is calculated by
determining the net assets attributable to each class and dividing by the
number of outstanding shares of that class.
 
  Investments in mortgage-backed securities and other debt obligations are
valued at fair value, based on yield equivalents, a pricing matrix or other
sources, under valuation procedures established by the Trust's Board of
Trustees. Other portfolio securities for which accurate market quotations are
readily available are valued on the basis of quotations furnished by a pricing
service or provided by dealers in such securities. Portfolio securities for
which accurate market quotations are not readily available are valued in
accordance with the Trust's valuation procedures. Debt obligations with a
remaining maturity of 60 days or less are valued at amortized cost. The Board
of Trustees has determined that the amortized cost of such securities
approximates fair market value.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish average annual total return and yield
in advertisements and communications to shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most recent
calendar quarter, assuming reinvestment of all dividends and distributions at
net asset value. The total return calculation assumes a complete redemption of
the investment at the end of the relevant period. The Fund may also from time
to time advertise total return on a cumulative, average, year-by-year or other
basis for various specified periods by means of quotations, charts, graphs or
schedules. In addition to the above, the Fund may from time to time advertise
its performance relative to certain performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value of the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided in
shareholder reports, the Fund may, in its discretion, from time to time make a
list of its holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of Fund shares in existence. Because each class of shares may be
subject to different expenses, the yield, total return and
 
                                       25
<PAGE>
 
distribution rate calculations with respect to each class of shares of the Fund
for the same period will differ. Due to the fees payable under the Service Plan
and the Administration Plan, the investment performance, for any period, of the
Institutional Shares will always be higher than the Service Shares and the
Administration Shares and the investment performance of the Administration
Shares will always be higher than the performance of the Service Shares. See
"Shares of the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement the Trustees are
authorized to issue an unlimited number of shares of beneficial interest, $.001
par value per share. The Trustees of the Trust are responsible for the overall
management and supervision of its affairs. The Trustees of the Trust have
authority under the Trust Agreement to create and classify shares of beneficial
interest in separate series, without further action by shareholders. As of the
date of this Prospectus, the Trustees have authorized shares of the Fund and
ten other series. Additional series may be added in the future. The Trustees
also have authority to classify or reclassify any series or portfolio of shares
into one or more classes. Pursuant thereto, the Trustees have authorized the
issuance of three classes of the Fund. These classes are: Institutional Shares,
Administration Shares and Service Shares. As of October 31, 1994, no
Administration Shares or Service Shares of the Fund were outstanding.
 
  Each Institutional Share, Administration Share and Service Share of the Fund
represents an equal proportionate interest in the assets belonging to the Fund.
All Fund expenses are based on a percentage of the Fund's aggregate average net
assets, except that the respective account administration and service fees
relating to a particular class will be borne exclusively by that class. It is
contemplated that most Administration Shares and Service Shares will be held in
accounts of which the record owner is a bank or other institution acting,
directly or through an agent, as nominee for its customers who are the
beneficial owners of the shares or another organization designated by such bank
or institution. Administration Shares and Service Shares will each be marketed
only to such institutional investors at net asset value with no sales load.
Institutional Shares may be purchased for accounts in the name of an investor
or institution that is not compensated by the Fund for services provided to the
institution's customers. Administration Shares may be purchased for accounts
held in the name of an institution that provides certain account administration
services to its customers, including maintenance of account records and
processing orders to purchase, redeem or exchange Administration Shares.
Administration Shares bear the cost of account administration fees at the
annual rate of up to 0.25% of the average daily net assets of such
Administration Shares. Service Shares may be purchased for accounts held in the
name of an institution that provides certain account administration and
shareholder liaison services to its customers, including maintenance of account
records and processing orders to purchase, redeem or exchange Service Shares,
responding to customer inquiries and assisting customers with investment
procedures. Service Shares bear the cost of service fees at the annual rate of
up to 0.50% of the average daily net assets of such Service Shares.
(Institutions that provide services to holders of Administration or Service
Shares are referred to in this Prospectus as "Service Organizations").
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration and Service Shares) to
its customers and thus receive different compensation with respect to different
classes of shares of the Fund. Administration Shares and Service Shares may
each have certain exclusive voting rights on matters relating to their
respective plans. Currently, shares of each class may be exchanged only for
shares of the same class in another fund and certain money market funds
sponsored by Goldman Sachs. The Fund may amend such policy in the future.
Dividends paid by the
 
                                       26
<PAGE>
 
Fund, if any, with respect to each class of shares will be calculated in the
same manner, at the same time and on the same day and will be in the same
amount, except for differences caused by the fact that the respective account
administration and service fees relating to a particular class will be borne
exclusively by that class. Similarly, the net asset value per share will vary
depending on the class of shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or conversion rights.
 
  Under Massachusetts law, there is a remote possibility that shareholders of a
business trust could, under certain circumstances, be held personally liable as
partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
  Unless otherwise required by the Act, ordinarily it will not be necessary for
the Trust to hold annual meetings of shareholders. As a result, shareholders
may not consider each year the election of Trustees or the appointment of
independent accountants. Shareholders may remove a Trustee by the affirmative
vote of at least two-thirds of the Trust's outstanding shares and the Trustees
must promptly call a meeting for such purpose when requested to do so in
writing by the record holders of not less than 10% of the outstanding shares of
the Trust. Shareholders may, under certain circumstances, communicate with
other shareholders in connection with requesting a special meeting of
shareholders. The Board of Trustees, however, will call a special meeting for
the purpose of electing Trustees if, at any time, less than a majority of
Trustees holding office at the time were elected by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue
certificates representing Institutional, Administration or Service Shares.
Instead, the Transfer Agent maintains a record of each Institutional,
Administration and Service shareholder's ownership. Each shareholder receives
confirmation of purchase and redemption orders from the Transfer Agent. Shares
and any dividends and distributions paid by the Fund are reflected in account
statements from the Transfer Agent.
 
                                    TAXATION
 
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code and intends to continue to qualify for such treatment.
To qualify for treatment as a regulated investment company, the Fund must
satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
 
                                       27
<PAGE>
 
  Dividends paid by the Fund from net investment income, the excess of net
short-term capital gain over net long-term capital loss, certain net foreign
currency gains, and original issue discount or certain market discount income
will be taxable to shareholders as ordinary income. Dividends paid by the Fund
from the excess of net long-term capital gain over net short-term capital loss
will be taxable as long-term capital gains regardless of how long the
shareholders have held their shares. These tax consequences will apply
regardless of whether distributions are received in cash or reinvested in
shares. Certain distributions paid by the Fund in January of a given year may
be taxable to shareholders as if received the prior December 31. Shareholders
will be informed annually about the amount and character of distributions
received from the Fund for federal income tax purposes.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
even though the distribution represents a return of a portion of the purchase
price.
 
  Redemptions and exchanges of shares are taxable events on which a shareholder
may recognize a gain or loss.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on distributions, redemptions and
exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other shareholders
that are not U.S. persons under the Code are subject to different tax rules and
may be subject to non-resident alien withholding at the rate of 30% (or a lower
rate provided by an applicable tax treaty) on amounts treated as ordinary
dividends from the Fund.
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local or
foreign taxes on payments received from the Fund. A state income (and possibly
local income and/or intangible property) tax exemption is generally available
to the extent the Fund's distributions are derived from interest on (or, in the
case of intangibles taxes, the value of its assets is attributable to) certain
U.S. Government obligations, provided in some states that certain thresholds
for holdings of such obligations and/or reporting requirements are satisfied.
 
                             ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at the meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days when
the Investment Adviser, The Northern Trust Company, State Street Bank and Trust
Company and the Federal Reserve Bank of New York are open for business, which
is Monday through Friday except for holidays. Such holidays currently are: New
Year's Day (observed), Martin Luther King Day, Presidents' Day (observed), Good
Friday, Memorial Day (observed), Independence Day, Labor Day, Columbus Day,
Thanksgiving and Christmas. On those days when one or more of such
organizations close early as a result of such day being a partial holiday or
otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                       28
<PAGE>
 
                              ADDITIONAL SERVICES
 
  The Trust, on behalf of the Fund, has adopted a Service Plan with respect to
the Service Shares which authorizes the Fund to compensate Service
Organizations for providing administration services and personal and account
maintenance services to their customers who are beneficial owners of such
Shares. The Trust, on behalf of the Fund, will enter into agreements with
Service Organizations which purchase Service Shares on behalf of their
customers ("Service Agreements"). The Service Agreements will provide for
compensation to the Service Organizations in an amount up to 0.50% (on an
annualized basis) of the average daily net assets of the Service Shares of the
Fund attributable to or held in the name of the Service Organization for its
customers; provided, however, that the fee paid for personal and account
maintenance services shall not exceed 0.25% of such average daily net assets.
The services provided by the Service Organizations may include acting, directly
or through an agent, as the sole shareholder of record, maintaining account
records for customers and processing orders to purchase, redeem or exchange
Service Shares for customers, responding to inquiries from prospective and
existing shareholders and assisting customers with investment procedures.
 
  Had Service Shares been outstanding during the fiscal year ended October 31,
1994, the Trust, on behalf of the Fund, would have paid the Service
Organizations fees at the annual rate of 0.50% of the Fund's average daily net
assets attributable to the Service Shares of the Fund.
 
  Holders of Service Shares of the Fund will bear all expenses and fees paid to
Service Organizations for their services with respect to such Shares as well as
any other expenses which are directly attributable to such Shares.
 
  Service Organizations (other than broker-dealers) may charge other fees to
their customers who are the beneficial owners of Service Shares in connection
with their customer accounts. These fees would be in addition to any amounts
received by the Service Organization under a Service Agreement and may affect
the return earned on an investment in the Fund. The Trust, on behalf of the
Fund, will accrue payments made pursuant to a Service Agreement daily. All
inquiries of beneficial owners of Service Shares should be directed to such
owners' Service Organization.
 
                            REPORTS TO SHAREHOLDERS
 
  Recordholders of Service Shares of the Fund will receive an annual report
containing audited financial statements and a semi-annual report. Each
recordholder of Service Shares will also be provided with a printed
confirmation for each transaction in its account and a monthly account
statement. A year-to-date statement for any account will be provided to a
Service Organization upon request made to Goldman Sachs.
 
  Service Organizations will be responsible for providing services similar to
those described above to their customers who are the beneficial owners of such
Shares. For example, Service Organizations are responsible for providing each
customer exercising investment discretion with monthly statements with respect
to such customer's account in lieu of an immediate confirmation of each
transaction.
 
                           PURCHASE OF SERVICE SHARES
 
  It is expected that all direct purchasers of Service Shares of the Fund will
be Service Organizations or their nominees. Customers of Service Organizations
may invest in Service Shares only through their Service Organizations. Service
Shares of the Fund may be purchased by a Service Organization through Goldman
Sachs at the net asset value per share next determined after receipt from a
Service Organization
 
                                       29
<PAGE>
 
of an order without the imposition of a sales load. If, by 3:00 p.m. Chicago
time (4:00 p.m. New York time), an order, a check or a Federal Reserve draft is
received from a Service Organization by Goldman Sachs, the price per share will
be the net asset value per share computed on the day the purchase order or such
form of payment is received. See "Net Asset Value."
 
PURCHASE PROCEDURES
 
  Purchases of Service Shares by a Service Organization may be made by placing
an order with Goldman Sachs at 800-621-2550 and either wiring Federal Funds to
The Northern Trust Company ("Northern") as subcustodian for State Street Bank
and Trust Company ("State Street") on the next Business Day or initiating an
ACH transfer to ensure receipt by Northern on the next Business Day. Purchases
may also be made by a Service Organization by check (except that a check drawn
on a foreign bank will not be accepted) or Federal Reserve draft made payable
to "Goldman Sachs Trust--GS Core Fixed Income Fund" and should be directed to
Goldman Sachs Trust--GS Core Fixed Income Fund, c/o GSAM Shareholder Services,
4900 Sears Tower, Chicago, Illinois 60606. Payment of the proceeds of
redemption of shares purchased by check may be delayed for a period of time as
described under "Redemption of Service Shares."
 
  The Service Organizations are responsible for the timely transmittal of
purchase orders to Goldman Sachs and payments to Northern or Goldman Sachs. In
order to facilitate timely transmittal, the Service Organizations have
established times by which purchase orders and payments must be received by
them.
 
OTHER PURCHASE INFORMATION
 
  The Fund does not have any minimum purchase or account requirements with
respect to Service Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Service Shares, and
may establish other requirements such as a minimum required account balance. A
Service Organization may effect redemptions of noncomplying accounts, and may
impose a charge for any special services rendered to its customers. Customers
should contact their Service Organization for further information concerning
such requirements and charges.
 
  The Fund reserves the right to redeem Service Shares of any Service
Organization whose account balance is less than $100 as a result of earlier
redemptions. Such redemptions will not be implemented if the value of such
Shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days prior written
notice to Service Organizations whose Service Shares are being redeemed to
allow them to purchase sufficient additional Service Shares to avoid such
redemption.
 
PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is received
from a Service Organization by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and dividends will begin on such shares on the
next Business Day, provided that a Federal Funds wire or an ACH transfer is
received by Northern on such day.
 
PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a Service Organization's check
or Federal Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago
time, the purchased shares will be issued and dividends will begin on such
shares on the next Business Day after the Service Organization's check or
Federal Reserve draft is received by Goldman Sachs.
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges of
Service Shares by a particular purchaser (or group of related purchasers). The
Fund or Goldman Sachs may reject or restrict purchases or exchanges of Service
Shares by a particular purchaser or group, for example, when a pattern of
frequent
 
                                       30
<PAGE>
 
purchases and sales or exchanges of Service Shares of the Fund is evident, or
if the purchase, sale or exchange orders are, or a subsequent abrupt redemption
might be, of a size that would disrupt management of the Fund.
 
                               EXCHANGE PRIVILEGE
 
  Service Shares of the Fund may be exchanged by Service Organizations for (i)
Service Shares of any other mutual fund sponsored by Goldman Sachs and
designated as an eligible fund for this purpose and (ii) the relevant class of
any portfolio of Goldman Sachs Money Market Trust at the net asset value next
determined either by writing to Goldman Sachs, Attention: Goldman Sachs Trust--
GS Core Fixed Income Fund, c/o GSAM Shareholder Services, 4900 Sears Tower,
Chicago, Illinois 60606 or if previously elected in the Fund's Account
Information Form, by telephone at 800-621-2550 (7:00 a.m. to 3:00 p.m. Chicago
time). A shareholder should obtain and read the prospectus relating to any
other fund and its shares or units and consider its investment objective,
policies and applicable fees before making an exchange. Service Shares acquired
by telephone exchange must be registered in the same name(s) and have the same
address as Service Shares of the Fund for which the exchange is being made.
 
  In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Service Shares" to confirm that
such instructions are genuine. For federal income tax purposes, an exchange is
treated as a sale of the Service Shares surrendered in the exchange, on which
an investor may realize a gain or loss, followed by a purchase of Service
Shares or the relevant class of any portfolio of Goldman Sachs Money Market
Trust received in the exchange. Shareholders should consult their own tax
advisers concerning the tax consequences of an exchange. Exchanges are
available only in states where exchanges may legally be made. The exchange
privilege may be modified or withdrawn at any time on sixty (60) days' written
notice to the recordholders of Service Shares and is subject to certain
limitations. See "Purchase of Service Shares."
 
                          REDEMPTION OF SERVICE SHARES
 
  The Fund will redeem its Service Shares upon request of the recordholder of
such Shares on any Business Day at the net asset value next determined after
the receipt by the Transfer Agent of such request in proper form. See "Net
Asset Value." If Service Shares to be redeemed were recently purchased by
check, the Fund may delay transmittal of redemption proceeds until such time as
it has assured itself that good funds have been collected for the purchase of
such Service Shares. This may take up to fifteen (15) days. Redemption requests
may be made by writing to or calling the Transfer Agent at the address or
telephone number set forth on the cover page of this Prospectus. A Service
Organization may request redemptions by telephone if the optional telephone
redemption privilege is elected on the Account Information Form. It may be
difficult to implement redemptions by telephone in times of drastic economic or
market changes. In an effort to prevent unauthorized or fraudulent redemption
or exchange requests by telephone, Goldman Sachs employs reasonable procedures
specified by the Trust to confirm that such instructions are genuine. Among
other things, any redemption request that requires money to go to an account or
address other than that designated on the Account Information Form must be in
writing and signed by an authorized person designated on the Account
Information Form. Any such
 
                                       31
<PAGE>
 
written request is also confirmed by telephone with both the requesting party
and the designated bank account to verify instructions. Exchanges among
accounts with different names, addresses and social security or taxpaying
identification numbers must be in writing and signed by an authorized person
designated on the Account Information Form. Other procedures may be implemented
from time to time. If reasonable procedures are not implemented, the Trust may
be liable for any loss due to unauthorized or fraudulent transactions. In all
other cases, neither the Fund, the Trust nor Goldman Sachs will be responsible
for the authenticity of redemption or exchange instructions received by
telephone. If Goldman Sachs receives a redemption request by 3:00 p.m. Chicago
time, the Service Shares to be redeemed earn dividends with respect to the day
the request is received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired to the recordholder of Service Shares. Redemption proceeds will
normally be wired on the next Business Day in Federal Funds (for a total one-
day delay), but may be paid up to seven (7) days after receipt of a properly
executed redemption request. Wiring of redemption proceeds may be delayed one
additional Business Day if the Federal Reserve Bank is closed on the day
redemption proceeds would ordinarily be wired. Once wire transfer instructions
have been given by Goldman Sachs, neither the Fund, the Trust nor Goldman Sachs
assumes any further responsibility for the performance of intermediaries or the
customer's Service Organization in the transfer process. If a problem with such
performance arises, the customer should deal directly with such intermediaries
or Service Organization.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by the Transfer Agent. The
request for such redemption will not be considered to have been received in
proper form until such additional documentation has been submitted to the
Transfer Agent by the recordholder of Service Shares.
 
  Service Organizations are responsible for the timely transmittal of
redemption requests by their customers to the Transfer Agent. In order to
facilitate timely transmittal of redemption requests, Service Organizations
have established times by which redemption requests must be received by them.
Additional documentation may be required when deemed appropriate by a Service
Organization.
 
  Except with respect to Service Organizations whose account balances are less
than $100, Service Shares of the Fund are not redeemable at the option of the
Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                       32
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF ANY OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Summary....................................................................   3
Financial Highlights.......................................................   8
Investment Objective and Policies..........................................   9
Investment Adviser.........................................................  11
Other Investments and Practices............................................  11
Risk Factors...............................................................  21
Investment Restrictions....................................................  22
Portfolio Turnover.........................................................  22
Management.................................................................  22
Dividends..................................................................  24
Net Asset Value............................................................  24
Performance Information....................................................  25
Shares of the Trust........................................................  26
Taxation...................................................................  27
Additional Information.....................................................  28
Additional Services........................................................  29
Reports to Shareholders....................................................  29
Purchase of Service Shares.................................................  29
Exchange Privilege.........................................................  31
Redemption of Service Shares...............................................  31
</TABLE>
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                                 GS CORE FIXED
                                  INCOME FUND
                                SERVICE SHARES
 
                                  MANAGED BY
                                  ----------
                                 GOLDMAN SACHS
                               ASSET MANAGEMENT,
                       A SEPARATE OPERATING DIVISION OF
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
                                  PROSPECTUS
 
                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                        GS SHORT DURATION TAX-FREE FUND
                              INSTITUTIONAL SHARES
 
                                   MANAGED BY
                                   ----------

                         GOLDMAN SACHS ASSET MANAGEMENT
                                AN AFFILIATE OF
                              GOLDMAN, SACHS & CO.
 
                               ----------------
 
  GS Short Duration Tax-Free Fund (the "Fund") is one fund in a family of funds
advised by Goldman Sachs Asset Management (the "Investment Adviser") or its
affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
  The Fund seeks to provide investors with a high level of current income,
consistent with relatively low volatility of principal, that is exempt from
regular federal income tax. The Fund will seek to achieve its objective
primarily through investments in fixed income municipal securities. All of such
securities will have remaining effective maturities of five years or less. The
Fund will maintain an average portfolio duration of two to three years. The
Fund's investments in municipal securities at the time of investment will be
rated at least A by Standard & Poor's Ratings Group ("Standard & Poor's") or
Moody's Investors Service, Inc. ("Moody's") or their equivalent ratings or, if
unrated by such rating organizations, determined by the Investment Adviser to
be of comparable credit quality. THE FUND'S WEIGHTED AVERAGE PORTFOLIO MATURITY
WILL, UNDER NORMAL CIRCUMSTANCES, BE SIGNIFICANTLY LONGER THAN THE FUND'S
AVERAGE PORTFOLIO DURATION OF TWO TO THREE YEARS.
 
  Goldman Sachs Asset Management, New York, New York, a separate operating
division of Goldman, Sachs & Co., serves as the Fund's investment adviser.
Goldman, Sachs & Co. serves as the Fund's distributor and transfer agent. The
Trust's custodian is State Street Bank and Trust Company.
 
                                                        (continued on next page)
 
INSTITUTIONAL SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR
GUARANTEED OR ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION,
AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
RESERVE BOARD OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN INSTITUTIONAL
SHARES OF THE FUND INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF
PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
                  The date of this Prospectus is March 1, 1995
<PAGE>
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Institutional Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from Goldman, Sachs & Co. by calling the telephone
number, or writing to one of the addresses, listed below.
 
GOLDMAN SACHS TRUST                     GOLDMAN SACHS ASSET MANAGEMENT
4900 SEARS TOWER                        INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606                 ONE NEW YORK PLAZA
                                        NEW YORK, NEW YORK 10004
 
 
GOLDMAN, SACHS & CO.                    GOLDMAN, SACHS & CO.   
DISTRIBUTOR                             TRANSFER AGENT          
85 BROAD STREET                         4900 SEARS TOWER        
NEW YORK, NEW YORK 10004                CHICAGO, ILLINOIS 60606 
                                                                
TOLL FREE (IN U.S.)...................  800-621-2550            
                                        
 
                                       2
<PAGE>
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Short Duration Tax-Free Fund (the "Fund") is one fund in a family of funds
advised by Goldman Sachs Asset Management (the "Investment Adviser") or its
affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a high level of
current income, consistent with relatively low volatility of principal, that is
exempt from regular federal income tax. The Fund will seek to achieve its
objective primarily through investments in fixed income securities ("Tax-Free
Securities") issued by or on behalf of states, territories and possessions of
the United States (including the District of Columbia) and their political
subdivisions, agencies and instrumentalities, the interest on which is exempt
from regular federal income tax and is not an item of tax preference under the
federal alternative minimum tax. In addition, Tax-Free Securities include
certain participation interests and other securities described under "Municipal
Securities and Other Investments" the interest on which is exempt from such
taxes.
 
  Under normal market conditions, the Fund will invest at least 80% of its net
assets in Tax-Free Securities. Although it does not expect to do so, the Fund
may invest up to 20% of its net assets in private activity bonds that may
subject certain investors to the federal alternative minimum tax. Tax-Free
Securities and private activity bonds are referred to herein as "Municipal
Securities." The Fund, although it is not expected to do so, may also invest up
to 20% of its net assets in taxable investments which are obligations issued or
guaranteed by the U.S. Government, its agencies and instrumentalities and
repurchase agreements collateralized by U.S. Government securities ("Taxable
Investments"). Except as set forth below, at no time will the Fund's
investments in private activity bonds and Taxable Investments exceed, in the
aggregate, 20% of the Fund's net assets. For temporary defensive purposes, the
Fund may invest more than 20% of its net assets in Taxable Investments. The
Fund may generate capital gains that are taxable. See "Taxation."
 
  The Fund will maintain an average portfolio duration, as defined under
"Investment Objectives and Policies," of two to three years. The individual
Municipal Securities in which the Fund invests will have remaining effective
maturities of five years or less. The effective maturity of a Municipal
Security, unlike its stated maturity, is the period remaining until the
principal can be recovered through a mandatory redemption provision or the
exercise of a put or demand feature by the holder of the Municipal Security or
the period until the next scheduled auction date for an auction rate Municipal
Security. Since the Fund uses duration as a criterion, there are no maximum
limitations as to average weighted portfolio maturity or permissible stated
maturity with respect to individual securities.
 
  The Fund's investments in Municipal Securities at the time of investment will
be rated at least A by Standard & Poor's or Moody's or their equivalent ratings
or, if unrated by such rating organizations, determined by the Investment
Adviser to be of comparable credit quality.
 
 
                                       3
<PAGE>
 
Although the Fund's net asset value per share will fluctuate more than that of
a money market fund, which attempts to maintain a stable net asset value per
share, the Fund will attempt to maintain limited fluctuation in net asset value
per share relative to longer-term municipal bond funds, but is not expected to
generate as high a level of income as such funds. In periods of falling
interest rates the Fund may experience a lower total return than a longer-term,
fixed rate municipal bond fund; however, it is expected that the Fund will have
less interest rate risk and net asset value fluctuation than such funds, but
more than those of a money market fund. There can be no assurance that the Fund
will achieve its investment objective.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Asset Management,
a separate operating division of Goldman, Sachs & Co. ("Goldman Sachs"), serves
as the Fund's investment adviser. In this capacity, the Investment Adviser
provides investment advisory and administrative services and receives from the
Fund a monthly fee equal on an annual basis to 0.40% of the Fund's average
daily net assets. Goldman Sachs is registered with the Securities and Exchange
Commission (the "SEC") as an investment adviser. See "Investment Adviser" and
"Management -- Investment Adviser."
 
                PURCHASE AND REDEMPTION OF INSTITUTIONAL SHARES
 
  The minimum initial investment is $50,000 in Institutional Shares of the Fund
alone or in combination with Institutional Shares of any other mutual fund
sponsored by Goldman Sachs and designated as an eligible fund for this purpose
and the relevant class of any portfolio of Goldman Sachs Money Market Trust.
Institutional Shares of the Fund may be purchased through Goldman Sachs at the
current net asset value per share without the imposition of a sales load. See
"Purchase of Institutional Shares." The Fund will redeem its Institutional
Shares upon request of a shareholder on any Business Day at the net asset value
next determined after receipt of such request in proper form. See "Redemption
of Institutional Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
shareholder inquiries. See "Management -- Distributor and Transfer Agent."
 
                                  RISK FACTORS
 
  The Fund's investments in Municipal Securities entail certain risks,
including adverse income and principal value fluctuation associated with
general economic conditions affecting the Municipal Securities markets, the
issuers and guarantors of Municipal Securities and the facilities financed by
Municipal Securities as well as adverse interest rate changes and volatility of
yields of short and intermediate term Municipal Securities. See "Risk Factors."
In addition, the Fund's yield will be subject to risks associated with
particular issues in which it invests, including potential defaults by issuers
and guarantors and the size and rating of an issue.
 
                                       4
<PAGE>
 
 
  While the Fund will seek to provide investors with a high level of current
income, consistent with low volatility of principal, that is exempt from
regular federal income tax, the Fund's current income and net asset value will
fluctuate. If the Fund invests in Taxable Investments, as permitted,
distributions of any income earned on such Taxable Investments will result in
taxable income to shareholders. If the Fund acquires Municipal Securities or
Taxable Investments at a market discount, distributions from accrued market
discount income will also be taxable to shareholders. If the Fund invests in
private activity bonds, distributions attributable to the interest on such
securities may be a tax preference item subject to the federal alternative
minimum tax. A reduction in federal income tax rates would reduce the tax
equivalent yield of the Fund and would tend to reduce the value of Municipal
Securities held in the Fund's portfolio. Conversely, an increase in federal
income tax rates would increase the taxable equivalent yield of the Fund. In
addition, changes in federal law adversely affecting the tax-exempt status of
income derived from Municipal Securities could significantly affect both the
supply of and demand for Municipal Securities, which in turn could affect the
Fund's ability to acquire and dispose of Municipal Securities at favorable
prices. Shareholders may be subject to state and local taxes on income received
from the Fund. Although over the long term it is expected that the volatility
of the Fund will be low in relation to that of longer-term bond funds, the
inherent volatility risk is such that, during any particular period, there may
be a loss of principal.
 
  The Fund may engage in short-term trading to benefit from yield disparities
among different issues of Municipal Securities, to seek short-term profits
during periods of fluctuating interest rates or for other reasons. Such trading
will increase the Fund's portfolio turnover rate and may therefore increase the
incidence of short-term capital gains (distributions of which are taxable to
shareholders as ordinary income).
 
  The Fund may enter into transactions in certain derivative instruments
including futures, options on futures, options on securities and securities
indices, and interest rate swaps, floors, caps and collars. The Fund may enter
into these transactions for hedging purposes and to seek to increase total
return. The Fund's use of such investment practices and derivative instruments
involves certain risks. These include the risk of loss if the Investment
Adviser is incorrect in its expectation of fluctuations in securities prices or
interest rates in connection with transactions to increase total return. In
addition, in the case of hedging transactions, there may be a possible lack of
correlation between changes in the value of the hedging instruments and the
portfolio assets being hedged. The Fund could also be exposed to risk of loss
if it is unable to close out its derivative positions because of an illiquid
secondary market. Distributions of any net income or net realized capital gains
from such derivative transactions are taxable to shareholders.
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, its divisions and
affiliates (including the Investment Adviser), partners and officers, in the
investment activities and business operations of the Fund may present certain
conflicts of interest, as described under "Management -- Investment Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends to declare a daily dividend determined with the objective of
distributing the majority of net investment income while enhancing the
stability of principal. Such dividends will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially
all of the Fund's net investment
 
                                       5
<PAGE>
 
income. From time to time a portion of such dividends may constitute an
economic return of capital, a portion of which may nevertheless be taxable as
ordinary income. The Fund also intends that net realized capital gains, if any,
after offset by any available capital loss carryforwards from prior taxable
years, will be declared as a dividend at least annually. Shareholders will
receive dividends in additional Institutional Shares of the Fund or may elect
to receive cash. For further information concerning dividends, see "Dividends."
 
                                    TAXATION
 
  The Fund has qualified and elected to be treated as a regulated investment
company under Subchapter M of the Internal Revenue Code of 1986, as amended
(the "Code"), and it intends to continue to qualify for such treatment. The
Fund will distribute the tax-exempt interest it receives from Municipal
Securities as "exempt-interest dividends." As a regulated investment company,
the Fund will not be required to pay federal income tax on taxable and tax-
exempt income or capital gains that it distributes to its shareholders in
accordance with the timing requirements of the Code. Shareholders may treat the
exempt-interest dividends they receive from the Fund as interest exempt from
regular federal income tax, although a portion of such dividends may be subject
to the federal alternative minimum tax for some shareholders. Distributions
from the Fund's taxable income or capital gain, if any, generally will be
taxable. See "Taxation."
 
                                       6
<PAGE>
 
 
                               FEES AND EXPENSES
                            (INSTITUTIONAL SHARES)*
 
<TABLE>
<CAPTION>
                                                             GS SHORT DURATION
                                                               TAX-FREE FUND
                                                             -----------------
<S>                                                          <C>
SHAREHOLDER TRANSACTION EXPENSES:
 Maximum Sales Load Imposed on Purchases....................       None
 Maximum Sales Load Imposed on Reinvested Dividends.........       None
 Redemption Fees............................................       None
 Exchange Fees..............................................       None
ANNUAL FUND OPERATING EXPENSES: (AS A PERCENTAGE OF AVERAGE
NET ASSETS)
 Management Fees............................................       0.40%
 Distribution (Rule 12b-1) Fees.............................       None
 Other Expenses (after expense limitation)..................       0.05%**
                                                                   ----
  TOTAL FUND OPERATING EXPENSES (AFTER EXPENSE LIMITATION)..       0.45%**
                                                                   ====
</TABLE>
 
EXAMPLE:
 
You would pay the following expenses on a hypothetical $1,000 investment,
assuming (1) a 5% annual return and (2) redemption at the end of each time
period:
 
<TABLE>
<CAPTION>

1 YEAR  3 YEARS  5 YEARS  10 YEARS
- ------  -------  -------  --------
<S>     <C>      <C>      <C>
$ 5      $14      $25      $57
</TABLE>

- --------
*  The information set forth in the foregoing table and hypothetical example
   relates only to Institutional Shares of the Fund. See "Shares of the Trust."
   Administration Shares and Service Shares of the Fund are subject to
   different fees and expenses. Administration Shares are subject to an
   administration fee of up to 0.25% of average daily net assets. Service
   Shares are subject to a service fee of up to 0.50% of average daily net
   assets. All other expenses related to Administration Shares and Service
   Shares are the same as for Institutional Shares.
** The Investment Adviser voluntarily agreed to reduce or limit certain "Other
   Expenses" of the Fund (excluding advisory fees, payments to Service
   Organizations (as defined below), taxes, interest and brokerage and
   litigation, indemnification and other extraordinary expenses) to the extent
   such expenses exceeded 0.05% per annum of the Fund's average net assets. If
   the Investment Adviser had not agreed to reduce or otherwise limit certain
   "Other Expenses" of the Fund, the Fund's other expenses and total operating
   expenses attributable to Institutional Shares of the Fund would have been
   0.21% and 0.61%, respectively. The foregoing table and example also reflect
   current operating expenses that will be applicable on an ongoing basis. See
   "Management -- Investment Adviser."
 
  The purpose of the foregoing table is to assist investors in understanding
the various costs and expenses of the Fund that an investor in the Fund will
bear directly or indirectly. The costs and expenses included in the table and
hypothetical example above should not be considered as representative of past
or future expenses. Actual fees and expenses may be greater or less than those
indicated. Moreover, while the example assumes a 5% annual return, the Fund's
actual performance will vary and may result in an actual return greater or less
than 5%. See "Management -- Investment Adviser."
 
                                       7
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
 
         SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  The following data with respect to Institutional Shares, Administration
Shares and Service Shares of the Fund outstanding during the periods indicated
has been audited by Arthur Andersen LLP, independent public accountants, as
indicated in their report incorporated by reference and attached to the
Additional Statement from the Fund's annual report to shareholders for the
fiscal year ended October 31, 1994 (the "Annual Report"). This information
should be read in conjunction with the financial statements and related notes
incorporated by reference and attached to the Additional Statement. The Annual
Report also contains performance information and is available upon request and
without charge by writing to any of the addresses on the inside cover of this
Prospectus.
 
<TABLE>
<CAPTION>
                                                                                DISTRIBUTIONS
                                  INCOME FROM INVESTMENT OPERATIONS         TO SHAREHOLDERS FROM
                               ------------------------------------------  -----------------------
                                                                TOTAL
                     NET ASSET               NET REALIZED   INCOME (LOSS)                          NET ASSET
                     VALUE AT     NET       AND UNREALIZED      FROM          NET     NET REALIZED VALUE AT
                     BEGINNING INVESTMENT   GAIN (LOSS) ON   INVESTMENT    INVESTMENT   GAIN ON     END OF       TOTAL
                     OF PERIOD   INCOME      INVESTMENTS     OPERATIONS      INCOME   INVESTMENTS   PERIOD      RETURN(c)
                     --------- ----------   --------------  -------------  ---------- ------------ ------------ --------- 
FOR THE YEARS ENDED OCTOBER 31,
<S>                  <C>       <C>          <C>             <C>            <C>        <C>          <C>       <C>
1994-
Institutional
shares..........      $10.23    $0.3787(a)     $(0.3575)(a)    $0.0212 (a)  $(0.3787)   $(0.0825)    $9.79    0.17%
1994-Administration
shares..........       10.23     0.3537(a)      (0.3575)(a)    (0.0038)(a)   (0.3537)    (0.0825)     9.79   (0.11)
1994-Service
shares (b)......        9.86     0.0475(a)      (0.0700)(a)    (0.0225)(a)   (0.0475)        --       9.79   (0.32)(d)
1993-
Institutional
shares..........        9.93     0.3834          0.3000         0.6834       (0.3834)        --      10.23    7.03
1993-Administration
shares (b)......       10.16     0.1555          0.0720         0.2275       (0.1555)        --      10.23    2.28 (d)
FOR THE PERIOD OCTOBER 1, 1992 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1992-
Institutional
shares..........       10.00     0.0341         (0.0700)       (0.0359)      (0.0341)        --       9.93   (0.34)(d)

<CAPTION> 
                                                                              RATIOS
                                                                        ASSUMING NO WAIVER
                                                                          OF-ADVISORY-FEES
                                                                       OR EXPENSE LIMITATIONS 
                                                                       ----------------------
                                  RATIO OF NET                                    RATIO OF NET
                     RATIO OF NET  INVESTMENT              NET ASSETS  RATIO OF    INVESTMENT
                     EXPENSES TO   INCOME TO   PORTFOLIO   AT END OF  EXPENSES TO  INCOME TO
                     AVERAGE NET  AVERAGE NET  TURNOVER      PERIOD     AVERAGE   AVERAGE NET
                       ASSETS       ASSETS      RATIO     (IN 000'S)  NET ASSETS     ASSETS
                     ------------ ------------ ----------- ---------- ----------- ------------
<S>                  <C>          <C>          <C>         <C>        <C>         <C>
1994-
Institutional
shares..........         0.45%        3.74%     354.00%     $83,704      0.61%        3.58%
1994-Administration
shares..........         0.70         3.51      354.00        3,866      0.86         3.35
1994-Service
shares (b)......         0.95(e)      4.30(e)   354.00           44      1.11(e)      4.14(e)
1993-
Institutional
shares..........         0.41         3.70      404.60      115,803      1.06         3.05
1993-Administration
shares (b)......         0.70(e)      3.32(e)   404.60          911      1.07(e)      2.95(e)
FOR THE PERIOD OCTOBER 1, 1992 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1992-
Institutional
shares..........         0.05(e)      4.58(e)    31.19(d)    14,601      2.68(e)      1.95(e)
</TABLE>
- ----
(a) Calculated based on the average shares outstanding methodology.
(b) Administration and Service share activity commenced on May 20, 1993 and
    September 20, 1994, respectively.
(c) Assumes investment at the net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(d) Not annualized.
(e) Annualized.
 
                                       8
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a high level of
current income, consistent with relatively low volatility of principal, that
is exempt from regular federal income tax. The Fund will seek to achieve its
objective primarily through investments in fixed income securities ("Tax-Free
Securities") issued by or on behalf of states, territories and possessions of
the United States (including the District of Columbia) and their political
subdivisions, agencies and instrumentalities, the interest on which is exempt
from regular federal income tax and is not a tax preference item under the
federal alternative minimum tax. Tax-Free Securities are also defined to
include certain participation interests in such securities the interest on
which is, in the opinion of counsel, exempt from such taxes. In addition, the
definition of Tax-Free Securities includes general obligation and revenue
bonds and other obligations described under "Municipal Securities and Other
Investments."
 
  Under normal market conditions, the Fund will invest at least 80% of its net
assets in Tax-Free Securities. Although it does not expect to do so, the Fund
may invest up to 20% of its net assets in private activity bonds that may
subject certain investors to the federal alternative minimum tax.
 
  The Fund's investments in Municipal Securities will at the time of
investment be rated at least A by Standard & Poor's or Moody's or their
respective equivalent ratings or, if unrated by such rating organizations,
determined by the Investment Adviser to be of comparable credit quality. A
security will be deemed to have met this requirement if it receives the
minimum required rating from at least one such rating organization even if it
has been rated below the minimum rating by one or more other rating
organizations. The credit rating assigned to Municipal Securities by these
rating organizations or by the Investment Adviser may reflect the existence of
guarantees, letters of credit or other credit enhancement features available
to the issuers or holders of such Municipal Securities.
 
  Although the Fund is not expected to do so, the Fund may invest as much as
20% of its net assets in taxable investments, which are defined as obligations
issued or guaranteed by the U.S. Government, its agencies and
instrumentalities and repurchase agreements collateralized by U.S. Government
securities ("Taxable Investments"). Except as set forth below, at no time will
the Fund's investments in private activity bonds and Taxable Investments
exceed, in the aggregate, 20% of the Fund's net assets. The Fund may for
temporary defensive purposes depart from its stated investment objective and
invest more than 20% of its net assets in Taxable Investments. The Fund's
investments in Municipal Securities and Taxable Investments may also generate
taxable capital gains. See "Taxation."
 
  The individual Municipal Securities in which the Fund invests will have
effective maturities of five years or less. The effective maturity of a
Municipal Security is defined as the period remaining until the earliest date
when the Fund can recover the principal amount of such security through
mandatory redemption or prepayment by the issuer, the exercise by the Fund of
a put option, demand feature or tender option granted by the issuer or a third
party or the payment of the principal on the stated maturity date. The
effective maturity of an auction rate Municipal Security is defined as the
period remaining until the next scheduled auction date. Thus, the effective
maturity of a Municipal Security may be substantially shorter than its final
stated maturity.
 
  The Fund will maintain an average portfolio duration in a range of two to
three years. The maturity of a security focuses on the time at which the final
payment is made. Maturity does not, however, take
 
                                       9
<PAGE>
 
into account payments which are made prior to the final payment, such as
periodic coupon payments. Duration, on the other hand, takes into account all
such interim payments by measuring the value weighted average maturity of all
principal and interest payments over time. For this purpose, the maturity of
principal payments will be determined in the same manner as the effective
maturity of individual Municipal Securities. The duration of the Fund's
portfolio will be shortened by the acquisition of Municipal Securities at a
premium, the sale of futures contracts and investments in variable and
floating rate securities, auction rate securities, tender option bonds,
participations and other Municipal Securities that are subject to put, demand,
tender, auction or mandatory redemption features and pre-refunded Municipal
Securities. The duration of the Fund's portfolio will be lengthened by the
acquisition of Municipal Securities at a discount, the purchase of futures
contracts and the purchase of when-issued or forward commitment securities,
zero coupon, deferred interest and capital appreciation bonds and inverse
floating rate instruments. Since the Fund uses duration as a criterion, there
are no maximum limitations as to average weighted portfolio maturity or
permissible stated maturity with respect to individual securities.
 
  Within this context, duration is a significant indicator of the sensitivity
of the Fund's net asset value to changes in market interest rates. However,
the computation of duration involves a greater degree of judgment and less
certainty than the computation of weighted average portfolio maturity based on
the stated maturities of portfolio investments. The Fund's weighted average
portfolio maturity will, under normal circumstances, be significantly longer
than the Fund's average portfolio duration of two to three years.
 
  Except as otherwise stated under "Investment Restrictions," and except for
the Fund's policy to invest under normal market conditions, 80% of its net
assets in Tax-Free Securities, the Fund's investment objective and policies
are not fundamental and may be changed without a vote of shareholders. If
there is a change in the Fund's investment objective, shareholders should
consider whether the Fund remains an appropriate investment in light of their
then current financial positions and needs. There can be no assurance that the
Fund will achieve its investment objective.
 
                              INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Asset Management, a separate
operating division of Goldman Sachs. The management services provided by the
Investment Adviser are subject to the general supervision of the Trust's Board
of Trustees. The Investment Adviser and its affiliates serve a wide range of
clients including private and public pension funds, endowments, foundations,
banks, thrifts, insurance companies, corporations, private investors and
family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and market expertise
of Goldman Sachs, whose investment research effort is one of the largest in
the industry. The in-depth information and
 
                                      10
<PAGE>
 
analyses generated by Goldman Sachs' research analysts, economists and
portfolio strategists are available to the Investment Adviser.
 
                  MUNICIPAL SECURITIES AND OTHER INVESTMENTS
 
MUNICIPAL SECURITIES
 
  Municipal Securities consist of bonds, notes and other instruments issued by
or on behalf of states, territories and possessions of the United States
(including the District of Columbia) and their political subdivisions,
agencies or instrumentalities, the interest on which is, in the opinion of
bond counsel for the issuers or counsel selected by the Investment Adviser,
exempt from regular federal income tax (i.e., excluded from gross income for
federal income tax purposes but not necessarily exempt from the federal
alternative minimum tax or from state or local taxes). In addition, Municipal
Securities include participation interests in such securities the interest on
which is, in the opinion of bond counsel for the issuers or counsel selected
by the Investment Adviser, exempt from regular federal income tax. The
definition of Municipal Securities includes other types of securities that
currently exist or may be developed in the future and that pay interest that
is, or will be, in the opinion of counsel, as described above, exempt from
regular federal income tax, provided that investing in such securities is
consistent with the Fund's investment objective and policies. The Fund will
reflect any such change in its definition of Municipal Securities in its
Prospectus.
 
  Municipal Securities are often issued to obtain funds for various public
purposes, including the construction of a wide range of public facilities such
as bridges, highways, housing, hospitals, mass transportation, schools,
streets and water and sewer works. Other public purposes for which Municipal
Securities may be issued include refunding outstanding obligations, obtaining
funds for general operating expenses, and obtaining funds to lend to other
public institutions and facilities. Municipal Securities also include "private
activity" or industrial development bonds, which are issued by or on behalf of
public authorities to obtain funds for privately-operated housing facilities,
airport, mass transit or port facilities, sewage disposal, solid waste
disposal or hazardous waste treatment or disposal facilities and certain local
facilities for water supply, gas or electricity. In addition, proceeds of
certain industrial development bonds are used for constructing, equipping,
repairing or improving privately operated industrial or commercial facilities.
The interest income from private activity bonds may subject certain investors
to the federal alternative minimum tax.
 
  The two principal classifications of Municipal Securities are "general
obligations" and "revenue obligations." General obligations are secured by the
issuer's pledge of its full faith and credit for the payment of principal and
interest, although the characteristics and enforcement of general obligations
may vary according to the law applicable to the particular issuer. Revenue
obligations, which include, but are not limited to, private activity bonds,
resource recovery bonds, certificates of participation and certain municipal
notes, are not backed by the credit and taxing authority of the issuer, and
are payable solely from the revenues derived from a particular facility or
class of facilities or, in some cases, from the proceeds of a special excise
or other specific revenue source. Nevertheless, the obligations of the issuer
of a revenue obligation may be backed by a letter of credit, guarantee or
insurance. General obligations and revenue obligations may be issued in a
variety of forms, including commercial paper, variable and floating rate
securities, tender option bonds, auction rate bonds, zero coupon, deferred
interest and capital appreciation bonds.
 
 
                                      11
<PAGE>
 
  MUNICIPAL LEASES AND CERTIFICATES OF PARTICIPATION. The Fund may invest in
municipal leases and certificates of participation in municipal leases. A
municipal lease is an obligation in the form of a lease or installment
purchase which is issued by a state or local government to acquire equipment
and facilities. Interest income from such obligations is generally exempt from
state and local taxes in the state of issuance. Municipal leases frequently
involve special risks not normally associated with general obligations or
revenue bonds. Leases and installment purchase or conditional sale contracts
(which normally provide for title to the leased asset to pass eventually to
the governmental issuer) have evolved as a means for governmental issuers to
acquire property and equipment without meeting the constitutional and
statutory requirements for the issuance of debt. The debt issuance limitations
are deemed to be inapplicable because of the inclusion in many leases or
contracts of "non-appropriation" clauses that relieve the governmental issuer
of any obligation to make future payments under the lease or contract unless
money is appropriated for such purpose by the appropriate legislative body on
a yearly or other periodic basis. In addition, such leases or contracts may be
subject to the temporary abatement of payments in the event the issuer is
prevented from maintaining occupancy of the leased premises or utilizing the
leased equipment. Although the obligations may be secured by the leased
equipment or facilities, the disposition of the property in the event of
nonappropriation or foreclosure might prove difficult, time consuming and
costly, and result in an unsatisfactory or delayed recoupment of the Fund's
original investment.
 
  Certificates of participation represent undivided interests in municipal
leases, installment purchase agreements or other instruments. The certificates
are typically issued by a trust or other entity which has received an
assignment of the payments to be made by the state or political subdivision
under such leases or installment purchase agreements.
 
  Certain municipal lease obligations and certificates of participation may be
deemed illiquid for the purpose of the Fund's 15% limitation on investments in
illiquid securities. Other municipal lease obligations and certificates of
participation acquired by the Fund may be determined by the Investment
Adviser, pursuant to guidelines adopted by the Trustees of the Trust, to be
liquid securities for the purpose of such limitation. In determining the
liquidity of municipal lease obligations and certificates of participation,
the Investment Adviser will consider a variety of factors including: (1) the
willingness of dealers to bid for the security; (2) the number of dealers
willing to purchase or sell the obligation and the number of other potential
buyers; (3) the frequency of trades or quotes for the obligation; and (4) the
nature of the marketplace trades. In addition, the Investment Adviser will
consider factors unique to particular lease obligations and certificates of
participation affecting the marketability thereof. These include the general
creditworthiness of the issuer, the importance of the property covered by the
lease to the issuer and the likelihood that the marketability of the
obligation will be maintained throughout the time the obligation is held by
the Fund.
 
  The Fund may also purchase participations in Municipal Securities held by a
commercial bank or other financial institution. Such participations provide
the Fund with the right to a pro rata undivided interest in the underlying
Municipal Securities. In addition, such participations generally provide the
Fund with the right to demand payment, on not more than seven days notice, of
all or any part of the Fund's participation interest in the underlying
Municipal Security, plus accrued interest. These demand features will be taken
into consideration in determining the effective maturity of such
participations and the average portfolio duration of the Fund. The Fund will
only invest in such participations if, in the
 
                                      12
<PAGE>
 
opinion of bond counsel for the issuers or counsel selected by the Investment
Adviser, the interest from such participations is exempt from regular federal
income tax.
 
  MUNICIPAL NOTES. The Fund may invest in municipal notes. Municipal
Securities in the form of notes generally are used to provide for short-term
capital needs in anticipation of an issuer's receipt of other revenues or
financing, and typically have maturities of up to three years. Such
instruments may include Tax Anticipation Notes, Revenue Anticipation Notes,
Bond Anticipation Notes, Tax and Revenue Anticipation Notes and Construction
Loan Notes. Tax Anticipation Notes are issued to finance the working capital
needs of governments. Generally, they are issued in anticipation of various
tax revenues, such as income, sales, property, use and business taxes, and are
payable from these specific future taxes. Revenue Anticipation Notes are
issued in expectation of receipt of other kinds of revenue, such as federal
revenues available under Federal Revenue Sharing programs. Bond Anticipation
Notes are issued to provide interim financing until long-term bond financing
can be arranged. In most cases, the long-term bonds then provide the funds
needed for repayment of the Notes. Tax and Revenue Anticipation Notes combine
the funding sources of both Tax Anticipation Notes and Revenue Anticipation
Notes. Construction Loan Notes are sold to provide construction financing.
These notes are secured by mortgage notes insured by the Federal Housing
Authority; however, the proceeds from the issuance may be less than the
economic equivalent of the payment of principal and interest on the mortgage
note if there has been a default. The obligations of an issuer of municipal
notes are generally secured by the anticipated revenues from taxes, grants or
bond financing. An investment in such instruments, however, presents a risk
that the anticipated revenues will not be received or that such revenues will
be insufficient to satisfy the issuer's payment obligations under the notes or
that refinancing will be otherwise unavailable.
 
  TAX-EXEMPT COMMERCIAL PAPER. The Fund may invest in tax-exempt commercial
paper. Commercial paper is a type of short-term, unsecured, negotiable
promissory note. These obligations are issued by state and local governments
and their agencies to finance working capital needs of municipalities or to
provide interim construction financing and are paid from general revenues of
municipalities or are refinanced with long-term debt. In most cases, tax-
exempt commercial paper is backed by letters of credit, lending agreements,
note repurchase agreements or other credit facility agreements offered by
banks or other institutions.
 
  PRE-REFUNDED MUNICIPAL SECURITIES. The Fund may invest in pre-refunded
Municipal Securities. The principal of and interest on pre-refunded Municipal
Securities are no longer paid from the original revenue source for such
securities. Instead, the source of such payments is typically an escrow fund
consisting of obligations issued or guaranteed by the U.S. Government, its
agencies or instrumentalities. The assets in the escrow fund are derived from
the proceeds of refunding bonds issued by the same issuer as the pre-refunded
Municipal Securities, but usually on terms more favorable to the issuer.
Issuers of Municipal Securities use this advance refunding technique to obtain
more favorable terms with respect to Municipal Securities that are not yet
subject to call or redemption by the issuer. For example, advance refunding
enables an issuer to refinance debt at lower market interest rates,
restructure debt to improve cash flow or eliminate restrictive covenants in
the indenture or other governing instrument for the pre-refunded Municipal
Securities. However, except for a change in the revenue source from which
principal and interest payments are made, the pre-refunded Municipal
Securities remain outstanding on their original terms until they mature or are
redeemed by
 
                                      13
<PAGE>
 
the issuer. The effective maturity of pre-refunded Municipal Securities will
be the redemption date if the issuer has assumed an obligation or indicated
its intention to redeem such securities on the redemption date. Pre-refunded
Municipal Securities are usually purchased at a price which represents a
premium over their face value.
 
  VARIABLE AND FLOATING RATE SECURITIES. The interest rates payable on certain
securities in which the Fund may invest, which generally are expected to be
revenue obligations, are not fixed and may fluctuate based upon changes in
market rates. A variable rate obligation has an interest rate which is
adjusted at predesignated periods in response to changes in the market rate of
interest on which the obligation's interest rate is based. Unlike fixed rate
instruments, variable and floating rate obligations do not lock in a
particular yield in a changing interest rate environment. Nevertheless, such
obligations may fluctuate in value in response to interest rate changes if a
change in market interest rates does not coincide with the interest reset date
for an obligation. Variable or floating rate obligations generally permit the
holders of such obligations to demand payment of principal from the issuer or
a third party at any time or at stated intervals. The Fund will take demand
features into consideration in determining the average portfolio duration of
the Fund and the effective maturity of individual Municipal Securities. In
addition, the absence of an unconditional demand feature exercisable within
seven days, and the failure of the issuer or a third party to honor its
obligations under a demand or put feature will require a variable or floating
rate obligation to be treated as illiquid for purposes of the Fund's 15%
limitation on illiquid investments.
 
  TENDER OPTION BONDS. The Fund may invest in tender option bonds. A tender
option bond is a Municipal Security (generally held pursuant to a custodial
arrangement) having a relatively long maturity and bearing interest at a fixed
rate substantially higher than prevailing short-term tax-exempt rates. The
bond is typically issued in conjunction with the agreement of a third party,
such as a bank, broker-dealer or other financial institution which grants the
security holders the option, at periodic intervals, to tender their securities
to the institution and receive the face value thereof. As consideration for
providing the option, the financial institution receives periodic fees equal
to the difference between the bond's fixed coupon rate and the rate, as
determined by a remarketing or similar agent at or near the commencement of
such period, that would cause the securities, coupled with the tender option,
to trade at par on the date of such determination. Thus, after payment of this
fee, the security holder effectively holds a demand obligation that bears
interest at the prevailing short-term tax-exempt rate. However, an institution
will not be obligated to accept tendered bonds in the event of certain
defaults or a significant downgrading in the credit rating assigned to the
issuer of the bond. Although the Fund intends to invest in tender option bonds
the interest on which will, in the opinion of bond counsel for the issuer of
interests therein or counsel selected by the Investment Adviser, be exempt
from regular federal income tax, there is a risk that the Fund will not be
considered the owner of such tender option bonds and thus will not be entitled
to treat such interest as exempt from such tax.
 
  AUCTION RATE SECURITIES. The Fund may invest in auction rate securities.
Provided that the auction mechanism is successful, auction rate securities
permit the holder to sell the securities in an auction at par value at
specified intervals. The dividend or interest rate is reset by "Dutch" auction
in which bids are made by broker-dealers and other institutions for a certain
amount of securities at a specified minimum yield. The rate set by the auction
is the lowest interest or dividend rate that covers all
 
                                      14
<PAGE>
 
securities offered for sale. While this process is designed to permit auction
rate securities to be traded at par value, there is the risk that an auction
will fail due to insufficient demand for the securities. The Fund will take
the next scheduled auction date of auction rate securities into consideration
in determining the average portfolio maturity of the Fund.
 
  ZERO COUPON, DEFERRED INTEREST AND CAPITAL APPRECIATION BONDS. The Fund may
invest in zero coupon, deferred interest and capital appreciation bonds. Zero
coupon, deferred interest and capital appreciation bonds are debt securities
issued or sold at a discount from their face value that do not entitle the
holder to any payment of interest prior to maturity or a specified
commencement or redemption date (or cash payment date). The amount of the
discount varies depending on the time remaining until maturity or cash payment
date, prevailing interest rates, the liquidity of the security and the
perceived credit quality of the issuer. These securities also may take the
form of debt securities that have been stripped of their unmatured interest
coupons, the coupons themselves or receipts or certificates representing
interests in such stripped debt obligations or coupons. A portion of the
discount with respect to stripped tax-exempt securities or their coupons may
be taxable. The market prices of zero coupon, deferred interest and capital
appreciation bonds generally are more volatile than the market prices of
interest-bearing securities and are likely to respond to a greater degree to
changes in interest rates than interest-bearing securities having similar
maturities and credit quality. The Fund's investments in zero coupon, deferred
interest and capital appreciation bonds or stripped securities may require the
Fund to sell certain of its portfolio securities to generate sufficient cash
to satisfy certain income distribution requirements. See "Taxation" in the
Additional Statement.
 
  INSURED BONDS. The Fund may invest in "insured" Municipal Securities.
Insured Municipal Securities are those for which scheduled payments of
interest and principal are guaranteed by a private (nongovernmental) insurance
company. The insurance only entitles the Fund to receive the face or par value
of the securities held by the Fund. The insurance does not guarantee the
market value of the Municipal Securities or the value of the shares of the
Fund.
 
  INVERSE FLOATING RATE INSTRUMENTS. The Fund may invest in "leveraged"
inverse floating rate debt instruments ("inverse floaters"). Investments in
inverse floaters will not exceed 25% of the Fund's net assets. The interest
rate on an inverse floater resets in the opposite direction from the market
rate of interest to which the inverse floater is indexed. An inverse floater
may be considered to be leveraged to the extent that its interest rate varies
by a magnitude that exceeds the magnitude of the change in the index rate of
interest. The higher the degree of leverage of an inverse floater the greater
the volatility of its market value.
 
                        OTHER INVESTMENTS AND PRACTICES
 
  WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase
securities on a when-issued basis. When-issued transactions arise when
securities are purchased by the Fund with payment and delivery taking place in
the future in order to secure what is considered to be an advantageous price
and yield to the Fund at the time of entering into the transaction. The Fund
may also purchase securities on a forward commitment basis. In a forward
commitment transaction, the Fund contracts to purchase securities for a fixed
price at a future date beyond the customary settlement time. The Fund is
required to hold and maintain in a segregated account until the settlement
date, cash or liquid, high-grade debt obligations in an amount sufficient to
meet the purchase price.
 
                                      15
<PAGE>
 
Alternatively, the Fund may enter into offsetting contracts for the forward
sale of other securities that it owns. The purchase of securities on a when-
issued or forward commitment basis involves a risk of loss if the value of the
security to be purchased declines prior to the settlement date. Although the
Fund will generally purchase securities on a when-issued or forward commitment
basis with the intention of actually acquiring securities for its portfolio,
the Fund may dispose of a when-issued security or forward commitment prior to
settlement if the Investment Adviser deems it appropriate to do so.
 
  REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with
dealers in U.S. Government securities and member banks of the Federal Reserve
System which furnish collateral at least equal in value or market price to the
amount of their repurchase obligation. In a repurchase agreement, the Fund
purchases a debt security from a seller which undertakes to repurchase the
security at a specified resale price on an agreed future date (ordinarily a
week or less). The resale price generally exceeds the purchase price by an
amount which reflects an agreed-upon market interest rate for the term of the
repurchase agreement. The primary risk is that, if the seller defaults, the
Fund might suffer a loss to the extent that the proceeds from the sale of the
underlying securities and other collateral held by the Fund in connection with
the related repurchase agreement are less than the repurchase price.
Repurchase agreements maturing in more than seven days are considered by the
Fund to be illiquid. In addition, the Fund, together with other registered
investment companies having advisory agreements with the Investment Adviser or
any of its affiliates, may transfer uninvested cash balances into a single
joint account, the daily aggregate balance of which will be invested in one or
more repurchase agreements.
 
  ILLIQUID SECURITIES. The Fund will not invest more than 15% of the value of
its net assets in securities which are illiquid, including repurchase
agreements providing for settlement in more than seven days after notice,
interest rate swaps, caps, floors and collars, certain over-the-counter
options, certain municipal leases and participations in Municipal Securities
which do not include a right to demand payment of the Fund's interest in the
underlying Municipal Securities and securities offered in the United States
that are restricted as to resale. However, a restricted security is not
considered to be illiquid if the Trustees of the Trust determine, based upon
the Investment Adviser's continuing review of the trading markets for the
specific restricted security under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale in accordance with Rule 144A
under the Securities Act of 1933 is liquid. In addition, a repurchase
agreement which by its terms can be liquidated before its nominal fixed term
on seven days or less notice is regarded as a liquid instrument. Subject to
the limitations described above, the Fund may acquire Municipal Securities or
illiquid securities in a private placement.
 
  Since it is not possible to predict with assurance exactly how this market
for restricted securities sold and offered under Rule 144A will develop, the
Board of Trustees will carefully monitor the Fund's investment in these
securities, focusing on such important factors, among others, as valuation,
credit quality, liquidity and availability of information. This investment
practice could have the effect of increasing the level of illiquidity in the
Fund to the extent that qualified institutional buyers become for a time
uninterested in purchasing these restricted securities.
 
                                      16
<PAGE>
 
INTEREST RATE SWAPS, CAPS, FLOORS AND COLLARS
 
  The Fund may enter into interest rate swaps for hedging purposes and to
increase total return. The Fund may also enter into other types of interest
rate swap agreements such as caps, floors and collars. Interest rate swaps
involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, such as an exchange of fixed rate
payments for floating rate payments. The purchase of an interest rate cap
entitles the purchaser, to the extent that a specified index exceeds a
predetermined interest rate, to receive payment of interest on a notional
principal amount from the party selling such interest rate cap. The purchase
of an interest rate floor entitles the purchaser, to the extent that a
specified index falls below a predetermined interest rate, to receive payments
of interest on a notional principal amount from the party selling the interest
rate floor. An interest rate collar is the combination of a cap and a floor
that preserves a certain return within a predetermined range of interest
rates. Since interest rate swaps, caps, floors and collars are individually
negotiated, the Fund expects to achieve an acceptable degree of correlation
between its portfolio investments and its swap, cap, floor or collar positions
entered into for hedging purposes.
 
  The Fund will enter into interest rate swaps only on a net basis, which
means that the two payment streams are netted out, with the Fund receiving or
paying, as the case may be, only the net amount of the two payments. The Fund
will maintain in a segregated account with the Fund's custodian cash and
liquid, high grade debt securities equal to the net amount, if any, of the
excess of the Fund's obligations over its entitlements with respect to swap
transactions. Interest rate swaps do not involve the delivery of securities,
other underlying assets or principal. Accordingly, the risk of loss with
respect to interest rate swaps is limited to the net amount of interest
payments that the Fund is contractually obligated to make. If the other party
to an interest rate swap defaults, the Fund's risk of loss consists of the net
amount of interest payments that the Fund is contractually entitled to
receive. To the extent that the net amount of an interest rate swap is held in
a segregated account consisting of cash and liquid, high grade debt
securities, the Fund and the Investment Adviser believe that interest rate
swaps do not constitute senior securities under the Investment Company Act of
1940, as amended (the "Act") and, accordingly, will not treat them as being
subject to the Fund's borrowing restriction.
 
  The Fund will not enter into any interest rate swap, cap, floor or collar
transactions unless the unsecured commercial paper, senior debt or claims
paying ability of the other party is rated either AA or A-1 or better by
Standard & Poor's or Aa or P-1 or better by Moody's or, if unrated by such
rating organizations, determined to be of comparable quality by the Investment
Adviser.
 
  The use of interest rate swaps, caps, floors and collars is a highly
specialized activity which involves investment techniques and risks different
from those associated with ordinary portfolio securities transactions. If the
Investment Adviser is incorrect in its forecasts of market values and interest
rates, the investment performance of the Fund would be less favorable than it
would have been if these investment techniques were not used. The staff of the
SEC currently takes the position that swaps, caps, floors and collars are
illiquid and thus subject to the Fund's 15% limitation on illiquid securities.
 
OPTIONS ON SECURITIES AND SECURITIES INDICES
 
  WRITING COVERED OPTIONS. The Fund may write (sell) covered call and put
options on any securities in which it may invest. All call options written by
the Fund are covered, which means that the
 
                                      17
<PAGE>
 
Fund will own the securities subject to the option so long as the option is
outstanding. All put options written by the Fund are covered, which means that
the Fund would have deposited with its custodian cash and liquid, high grade
debt securities with a value equal to the exercise price of the put option.
Call and put options written by the Fund will also be considered to be covered
to the extent that the Fund's liabilities under such options are wholly or
partially offset by its rights under call and put options purchased by the
Fund. The Fund may also write call and put options on a securities index
composed of securities in which it may invest. In addition, the Fund may
purchase put and call options on any securities in which it may invest or
options on any securities index composed of securities in which it may invest.
 
  The writing and purchase of options is a highly specialized activity which
involves investment techniques and risks different from those associated with
ordinary portfolio securities transactions. The use of options to increase
total return involves the risk of loss if the Investment Adviser is incorrect
in its expectation of fluctuations in securities prices or interest rates. The
successful use of puts for hedging purposes depends in part on the ability of
the Investment Adviser to predict future price fluctuations and the degree of
correlation between the options and securities markets. If the Investment
Adviser is incorrect in its determination of the correlation between the
securities or indices on which the options are written and purchased and the
securities in the Fund's investment portfolio, the investment performance of
the Fund will be less favorable than it would have been in the absence of such
option transactions. The writing of options could significantly increase the
Fund's portfolio turnover rate and, therefore, associated brokerage
commissions or spreads.
 
  FUTURES CONTRACTS AND RELATED OPTIONS. To hedge against changes in interest
rates or securities prices or to seek to increase total return, the Fund may
purchase and sell various kinds of futures contracts and purchase and write
call and put options on any of such futures contracts. The Fund may also enter
into closing purchase and sale transactions with respect to any of such
contracts and options. The futures contracts may be based on various
securities (such as U.S. Government securities), securities indices and other
financial instrument and indices. The Fund will engage in futures or related
option transactions only for bona fide hedging purposes as defined in
regulations of the Commodity Futures Trading Commission or to seek to increase
total return to the extent permitted by such regulations.
 
  The Fund may not purchase or sell futures contracts or purchase or sell
related options to increase total return, except for closing purchase or sale
transactions, if immediately thereafter the sum of the amount of initial
margin deposits and premiums paid on the Fund's outstanding positions in
futures and related options entered into for the purpose of seeking to
increase total return would exceed 5% of the market value of the Fund's net
assets. Transactions in futures contracts and options on futures involve
brokerage costs, require margin deposits and, in the case of contracts and
options obligating the Fund to purchase securities, require the Fund to
segregate cash and liquid, high grade debt securities with a value equal to
the amount of the Fund's obligations.
 
  While transactions in futures contracts and options on futures may reduce
certain risks, such transactions themselves entail certain other risks. See
"Investment Objectives and Policies -- Futures Contracts and Related Options"
in the Additional Statement. Thus, while the Fund may benefit from the use of
futures and options on futures, unanticipated changes in interest rates may
result in a poorer overall performance for the Fund than if it had not entered
into any futures contracts or options
 
                                      18
<PAGE>
 
transactions. The loss incurred by the Fund in writing options on futures is
potentially unlimited and may exceed the amount of the premium received.
 
  The use of futures may increase the volatility of the Fund's net asset
value. The profitability of the Fund's trading in futures to increase total
return will depend on the Investment Adviser's ability to correctly analyze
the futures markets. In addition, because of the low margin deposits normally
required in futures trading, a relatively small price movement in a futures
contract may result in substantial losses to the Fund. Further, futures
trading may be illiquid, and exchanges may limit fluctuations in futures
contract prices during a single day.
 
  In the event of an imperfect correlation between a futures position and a
portfolio position which is intended to be protected, the desired protection
may not be obtained and the Fund may be exposed to risk of loss. Perfect
correlation between the Fund's futures positions and portfolio positions will
be impossible to achieve. The Fund's transactions in options and futures
contracts may be limited by the requirements of the Code for qualification as
a regulated investment company.
 
  LENDING OF PORTFOLIO SECURITIES. The Fund may also seek to increase its
income by lending portfolio securities. Under present regulatory policies,
such loans may be made to institutions, such as certain broker-dealers, and
are required to be secured continuously by collateral in cash, cash
equivalents or U.S. Government securities maintained on a current basis in an
amount at least equal to the market value of the securities loaned. Cash
collateral may be invested in cash equivalents. If the Investment Adviser
determines to make securities loans, the value of the securities loaned may
not exceed 33 1/3% of the value of the total assets of the Fund. See
"Investment Restrictions" in the Additional Statement. The Fund may experience
a loss or delay in the recovery of its securities if the institution with
which it has engaged in a portfolio loan transaction breaches its agreement
with the Fund.
 
  OTHER INVESTMENT COMPANIES. The Fund reserves the right to invest up to 10%
of its total assets, calculated at the time of purchase, in the securities of
other investment companies including business development companies and small
business investment companies. The Fund may not invest more than 5% of its
total assets in the securities of any one investment company or acquire more
than 3% of the voting securities of any other investment company. Pursuant to
an exemptive order obtained from the SEC, other investment companies in which
the Fund may invest include money market funds for which the Investment
Adviser or any of its affiliates serves as investment adviser. The Fund will
indirectly bear its proportionate share of any management fees and other
expenses paid by investment companies in which it invests in addition to the
advisory fees paid by the Fund. However, to the extent that the Fund invests
in a money market fund for which the Investment Adviser or any of its
affiliates acts as adviser, the advisory fees payable by the Fund to the
Investment Adviser will be reduced by an amount equal to the Fund's
proportionate share of the advisory fees paid by such money market fund to the
Investment Adviser or any of its affiliates.
 
                                 RISK FACTORS
 
  An investment in the Fund presents certain risk factors, in addition to
those described above, including the following:
 
  NET ASSET VALUE VOLATILITY. The net asset value of the Fund's shares will
change with changes in the value of its portfolio securities. Because, under
normal market conditions, the Fund invests
 
                                      19
<PAGE>
 
primarily in fixed income Municipal Securities, the net asset value of the
shares of the Fund can be expected to change as general levels of interest
rates fluctuate. Volatility may be greater during periods of general economic
uncertainty and interest rate fluctuation. The volatility of Municipal
Securities may differ from that of other fixed income securities.
 
  YIELDS AND MARKET VALUES OF MUNICIPAL SECURITIES. The yields and market
values of Municipal Securities are determined primarily by the general level
of interest rates, the supply of and demand for Municipal Securities, the
creditworthiness of the issuers of Municipal Securities and economic and
political conditions affecting such issuers. Due to their tax-exempt status,
the yields and market values of Municipal Securities may be adversely affected
by certain factors, such as changes in tax rates and policies, which may have
less of an effect on the taxable fixed income markets. In addition, the yields
of short or intermediate term Municipal Securities are generally more volatile
than the yields of longer term Municipal Securities. Moreover, certain types
of Municipal Securities, such as housing revenue bonds, which are based on
mortgage revenues, involve prepayment risks which could affect the yields of
such Municipal Securities.
 
  When interest rates decline, the value of a portfolio of Municipal
Securities (with the exception of variable and floating rate securities) can
be expected to rise. Conversely, when interest rates rise, the value of a
portfolio of Municipal Securities can be expected to decline. In general, the
yields on short and intermediate term Municipal Securities are lower than the
yields on long term Municipal Securities. Because of the shorter maturities of
short and intermediate term Municipal Securities, however, the market values
of such Municipal Securities can be expected to fluctuate to a lesser extent
as a result of changes in interest rates. Nevertheless, a sudden and extreme
increase in interest rates may cause a decline in the Fund's net asset value,
while a sudden and extreme decline in interest rates could result in an
increase in the Fund's net asset value.
 
  The ability of the Fund to achieve its investment objective will therefore
depend in part on the extent to which the Fund is able to anticipate and
respond to fluctuations in market interest rates and to utilize appropriate
strategies to maximize returns to the Fund, while attempting to minimize the
associated risks to its invested capital. While short or intermediate term
Municipal Securities are generally less susceptible to fluctuations in value
as a result of changes in interest rates (as compared to longer term Municipal
Securities), certain types of instruments in which the Fund will invest, such
as zero coupon bonds, deferred interest and capital appreciation bonds, are
more susceptible to fluctuations as a result of movements in interest rates.
As a result, a sudden and extreme rise in interest rates could result in a
substantial decline in the value of such portfolio securities. The ability of
the Fund to achieve, in accordance with its investment objective, relatively
low volatility of principal therefore depends in part on the extent to which
the Fund is able to anticipate and respond to fluctuations in market interest
rates and to utilize appropriate strategies to maximize returns to the Fund.
 
  DEFAULT RISK. Investments in Municipal Securities, including both general
obligations and revenue obligations, are subject to the risk that the issuer
could default on its obligations, and the Fund could sustain losses on such
investments. Such a default could result from the inadequacy of the sources or
revenues from which interest and principal payments are to be made or the
assets collateralizing such obligations. Revenue obligations, including
private activity bonds, municipal leases,
 
                                      20
<PAGE>
 
certificates of participation and certain other types of instruments in which
the Fund may invest, are backed only by specific assets or revenue sources and
not by the full faith and credit of the governmental issuer.
 
  TAX CONSEQUENCES. While the Fund will, under normal market conditions,
invest substantially all of its assets in Municipal Securities, the
recognition of accrued market discount income (if the Fund acquires Municipal
Securities or other obligations at a market discount) and income and/or
capital gains from certain types of instruments in which the Fund is permitted
to invest, including U.S. Government securities, options and futures
contracts, interest rate swaps, caps, floors and collars, securities loans,
the disposition of when-issued securities or forward commitments prior to
settlement and repurchase agreements, will result in taxable income,
distributions of which will be taxable to shareholders. In addition, the
Fund's investments in private activity bonds subject to the federal
alternative minimum tax could result in income the distribution of which could
cause or increase alternative minimum tax liability for some shareholders. The
Fund may also generate capital gains from the disposition of its investments
and its distributions of such capital gains will be taxable to shareholders.
Shareholders may be subject to state, local or foreign taxes on certain income
received from the Fund. See "Taxation."
 
  Because interest income from Municipal Securities is not subject to regular
federal income taxation, the attractiveness of Municipal Securities in
relation to other investment alternatives will be affected by any changes in
federal income tax rates applicable to, or the continuing federal income tax-
exempt status of, such interest income. Any proposed or actual changes in such
rates or exempt status, therefore, can significantly affect both the supply of
and demand for Municipal Securities, which could in turn affect the Fund's
ability to acquire and dispose of Municipal Securities at desirable yield and
price levels.
 
  CALL RISK AND REINVESTMENT RISK. The Municipal Securities in which the Fund
will invest may include "call" provisions which permit the issuers of such
securities, at any time or after a specified period, to redeem the securities
prior to their stated maturity. In the event that Municipal Securities held in
the Fund's portfolio are called prior to maturity, the Fund will be required
to reinvest the proceeds received on such securities at an earlier date and
may be able to do so only at lower yields, thereby reducing the Fund's return
on its portfolio securities. There is a risk that the proceeds of housing
revenue bonds will be in excess of demand for mortgages which would result in
early retirement of the bonds by the issuer. Moreover, such housing revenue
bonds depend for their repayment upon the cash flow from the underlying
mortgages, which cannot be precisely predicted when the bonds are issued. Any
difference in the actual cash flow from such mortgages from the assumed cash
flow could have an adverse impact upon the ability of the issuer to make
scheduled payments of principal and interest on the bonds, or could result in
early retirement of the bonds.
 
  COUNTERPARTY CREDIT RISK. When the Fund enters into certain transactions,
including repurchase agreements, stand-by commitments (described in the
Additional Statement), over-the-counter options, interest rate swaps, caps,
floors and collars and securities lending transactions, it assumes the risk
that its counterparty will default on its obligations to the Fund, which could
result in losses.
 
  RISKS OF DERIVATIVE TRANSACTIONS. The Fund's transactions in interest rate
swaps, caps, floors and collars, futures and options, involve certain risks,
including a possible lack of correlation between
 
                                      21
<PAGE>
 
changes in the value of the hedging instruments and the portfolio assets being
hedged, the potential illiquidity of the markets for derivative instruments
and the risks arising from the margin requirements and related leverage
factors associated with such transactions. The use of these management
techniques to seek to increase total return also involves the risk of loss if
the Investment Adviser is incorrect in its expectation of fluctuations in
securities prices and interest rates.
 
                            INVESTMENT RESTRICTIONS
 
  The Fund is subject to certain investment restrictions which, as described
in more detail in the Additional Statement, are fundamental policies that
cannot be changed without the approval of a majority of the outstanding shares
of the Fund. Among other restrictions, the Fund may not, with respect to 75%
of its total assets, purchase securities of any one issuer (other than
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities) if more than 5% of its total assets would be invested in
such issuer. Less than 25% of the Fund's total assets may be invested in the
securities of issuers in any one industry. For the purposes of this
restriction, state and municipal governments and their agencies and
instrumentalities are not deemed to be industries with respect to tax-exempt
securities of these issuers. Thus, the Fund may invest 25% or more of the
value of its total assets in Municipal Securities which are related in such a
way that an economic, business or political development or change affecting
one Municipal Security would also affect the other Municipal Securities. For
example, the Fund may so invest in (a) Municipal Securities the interest on
which is paid solely from revenues of similar projects such as hospitals,
electric utility systems, multi-family housing, nursing homes, commercial
facilities (including hotels), steel companies or life care facilities, (b)
Municipal Securities whose issuers are in the same state, or (c) industrial
development obligations. The Fund may not borrow money, except from banks for
temporary or short-term purposes, in connection with redemptions and failed
settlements and to finance certain additional purchases of securities,
provided that the Fund maintains asset coverage of 300% for all such
borrowings. As a matter of non-fundamental policy, the Fund may not purchase
securities while such borrowings exceeds 5% of the value of the Fund's total
assets.
 
                              PORTFOLIO TURNOVER
 
  The Fund may engage in active short-term trading to benefit from yield
disparities among different issues of Municipal Securities, to seek short-term
profits during periods of fluctuating interest rates or for other reasons.
Such trading will increase the Fund's portfolio turnover rate and may
therefore increase the incidence of short-term capital gain (distributions of
which are taxable to shareholders as ordinary income). A high rate of
portfolio turnover (100% or higher) involves correspondingly greater expenses
which must be borne by the Fund and its shareholders and may under certain
circumstances make it more difficult for the Fund to qualify as a regulated
investment company under the Internal Revenue Code. The portfolio turnover
rate is calculated by dividing the lesser of the dollar amount of sales or
purchases of portfolio securities by the average monthly value of the Fund's
portfolio securities, excluding securities having a maturity at the date of
purchase of one year or less.
 
                                  MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct
 
                                      22
<PAGE>
 
and supervise the Fund's daily business operations. The Additional Statement
contains information as to the identity of, and other information about, the
Trustees and officers of the Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Asset Management, One New York Plaza, New York, New York
10004, a separate operating division of Goldman Sachs, acts as the investment
adviser of the Fund. Goldman Sachs was registered as an investment adviser in
1981. As of January 31, 1995, the Investment Adviser, together with its
affiliates, acted as investment adviser, administrator or distributor for
approximately $48.7 billion in assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Asset
Management, subject to the general supervision of the Board of Trustees,
manages the Fund's portfolio and provides for the administration of all of the
Fund's other affairs. It is the responsibility of the Investment Adviser to
make investment decisions for the Fund and to place purchase and sale orders
for the Fund's portfolio transactions. Such orders may be directed to any
broker including, to the extent and in the manner permitted by applicable law,
Goldman Sachs or its affiliates. Goldman Sachs has agreed to permit the Fund
to use the name "Goldman Sachs" or a derivative thereof as part of the Fund's
name for as long as the Investment Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Mark Muller and Theodore T. Sotir. Mr.
Muller joined Goldman Sachs Asset Management in 1991 and is currently a Vice
President. Prior to 1991, he was a senior portfolio manager for Van Kampen
Meritt Investment Advisory Corporation, where he was responsible for actively
managing a wide variety of municipal securities portfolios. Mr. Sotir helps
with overall portfolio strategy and is a member of the Investment Adviser's
risk control team. Mr. Sotir is a Vice President of Goldman Sachs and joined
Goldman Sachs Asset Management in 1993 after working as a portfolio manager at
Fidelity Management Trust Company. Prior to joining Fidelity, Mr. Sotir worked
for Goldman Sachs in the mortgage securities department for six years.
 
  As compensation for the services rendered to the Fund by the Investment
Adviser pursuant to the Investment Advisory Agreement, and the assumption by
the Investment Adviser of the expenses related thereto, the Fund pays the
Investment Adviser a fee, computed daily and payable monthly, at an annual
rate equal to 0.40% of the Fund's average daily net assets. For the fiscal
year ended October 31, 1994, the Fund paid an advisory fee to the Investment
Adviser equal on an annual basis to 0.40% of the Fund's average daily net
assets.
 
  The Investment Adviser has voluntarily agreed to reduce or otherwise limit
certain expenses of the Fund (excluding advisory fees, payments to Service
Organizations (as defined below), taxes, interest and brokerage and
litigation, indemnification and other extraordinary expenses) to the extent
such expenses exceed 0.05% annually of the Fund's average net assets. Such
reductions or limits, if any, are calculated monthly on a cumulative basis and
may be discontinued or modified by the Investment Adviser at its discretion at
any time. The Investment Adviser has also agreed to reduce its fees payable
(to the extent of such fees) by the amount the Fund's expenses would, absent
the fee reduction, exceed the applicable expense limitations imposed by state
securities administrators. See "Management -- Expenses" in the Additional
Statement.
 
                                      23
<PAGE>
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser and Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts
and other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have Investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities, and instruments
as the Fund. Goldman Sachs and its affiliates will not have any obligation to
make available any information regarding their proprietary activities or
strategies, or the activities or strategies used for other accounts managed by
them, for the benefit of the management of the Fund and it is not anticipated
that the Investment Adviser will have access to proprietary information for
the purpose of managing the Fund. The results of the Fund's investment
activities, therefore, may differ from those of Goldman Sachs and its
affiliates and it is possible that the Fund could sustain losses during
periods in which Goldman Sachs and its affiliates and other accounts achieve
significant profits on their trading for proprietary or other accounts. From
time to time, the Fund's activities may be limited because of regulatory
restrictions applicable to Goldman Sachs and its affiliates, and/or their
internal policies designed to comply with such restrictions. See "Activities
of Goldman Sachs and its Affiliates and Other Accounts Managed by Goldman
Sachs" in the Additional Statement for further information.
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact
Goldman Sachs as Transfer Agent at the address or the telephone number set
forth on the inside front cover page of this Prospectus.
 
                                   DIVIDENDS
 
  The Fund intends to declare a daily dividend determined with the objective
of distributing the majority of net investment income while enhancing the
stability of principal. Such dividend will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially
all of the Fund's net investment income. From time to time a portion of such
dividends may constitute an economic return of capital, a portion of which may
nevertheless be taxable as ordinary income. The Fund also intends that all net
realized long-term and short-term capital gains will be declared as a dividend
at least annually. In determining amounts of capital gains to be distributed,
capital losses including any available capital loss carryovers from prior
years will be offset against capital gains realized.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination
is made as of 3:00 p.m. Chicago time.
 
 
                                      24
<PAGE>
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case
payment will be made on the first Business Day of the succeeding month.
Payment of dividends with respect to capital gains, if any, when declared will
be made in additional shares of the Fund at the net asset value on the payment
date, unless cash distributions are elected. This election to receive
dividends in cash is initially made on the Account Information Form and may be
changed upon written notice to the Transfer Agent at any time prior to the
record date for a particular dividend or distribution. If cash dividends are
elected with respect to the Fund's monthly net investment income dividends,
then cash dividends must also be elected with respect to the non-long term
capital gains component, if any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or unrealized appreciation of the Fund's portfolio securities. Therefore,
subsequent distributions (or portions thereof) of taxable income or realized
appreciation on such shares may be taxable to the investor even if the net
asset value of the shares is, as a result of the distributions, reduced below
the cost of such shares and the distributions (or portions thereof) represent
a return of a portion of the purchase price.
 
                                NET ASSET VALUE
 
  The net asset value per share is calculated by the Fund's custodian as of
the close of regular trading on the New York Stock Exchange (normally 3:00
p.m. Chicago time, 4:00 p.m. New York time), immediately after determination
of the income to be declared as a dividend on each Business Day (as such term
is defined under "Additional Information"). Net asset value per share of each
class is calculated by determining the net assets attributable to each class
and dividing by the number of outstanding shares of that class.
 
  Portfolio securities are valued based on market quotations or, if accurate
quotations are not readily available, at fair value as determined in good
faith under procedures established by the Trust's Board of Trustees.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish yield, tax equivalent yield and
average annual total return in advertisements and communications to
shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
  Tax equivalent yield represents the yield an investor would have to earn to
equal, after taxes, the Fund's tax-free yield. Tax equivalent yield is
calculated by dividing the Fund's tax-exempt yield by one minus a stated
federal and/or state tax rate.
 
 
                                      25
<PAGE>
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most
recent calendar quarter, assuming reinvestment of all dividends and
distributions at net asset value. The total return calculation assumes a
complete redemption of the investment at the end of the relevant period. The
Fund may also from time to time advertise total return on a cumulative,
average, year-by-year or other basis for various specified periods by means of
quotations, charts, graphs or schedules. In addition to the above, the Fund
may from time to time advertise its performance relative to certain
performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value for the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided
in shareholder reports, the Fund may, in its discretion, from time to time
make a list of its holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of shares in existence. Because each class of shares may be subject
to different expenses, the yield, total return and distribution rate
calculations with respect to each class of shares of the Fund for the same
period will differ. Due to the fees payable under the Service Plan and the
Administration Plan, the investment performance, for any period, of the
Institutional Shares will always be higher than that of the Service Shares and
the Administration Shares and the investment performance of the Administration
Shares will always be higher than that of the Service Shares. See "Shares of
the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement the Trustees are
authorized to issue an unlimited number of shares of beneficial interest,
$.001 par value per share. The Trustees of the Trust are responsible for the
overall management and supervision of its affairs. The Trustees of the Trust
have authority under the Trust Agreement to create and classify shares of
beneficial interest in separate series, without further action by
shareholders. As of the date of this Prospectus, the Trustees have authorized
shares of the Fund and ten other series. Additional series may be added in the
future. The Trustees also have authority to classify or reclassify any series
or portfolio of shares into one or more classes. Pursuant thereto, the
Trustees have authorized the issuance of three classes of the Fund. These
classes are: Institutional Shares, Administration Shares and Service Shares.
 
  Each Institutional Share, Administration Share and Service Share of the Fund
represents an equal proportionate interest in the assets belonging to the
Fund. All Fund expenses are based on a percentage of the Fund's aggregate
average net assets, except that the respective account administration and
service fees relating to a particular class will be borne exclusively by that
class. It is contemplated that most Administration Shares and Service Shares
will be held in accounts of which
 
                                      26
<PAGE>
 
the record owner is a bank or other institution acting, directly or through an
agent, as nominee for its customers who are the beneficial owners of the
shares or another organization designated by such bank or institution.
Administration Shares and Service Shares will each be marketed only to such
institutional investors, at net asset value with no sales load. Institutional
Shares may be purchased for accounts in the name of an investor or institution
that is not compensated by the Fund for services provided to the institution's
customers. Administration Shares may be purchased for accounts held in the
name of an institution that provides certain account administration services
to its customers, including maintenance of account records and processing
orders to purchase, redeem or exchange Administration Shares. Administration
Shares bear the cost of account administration fees at the annual rate of up
to 0.25% of the average daily net assets of such Administration Shares.
Service Shares may be purchased for accounts held in the name of an
institution that provides certain account administration and shareholder
liaison services to its customers, including maintenance of account records
and processing orders to purchase, redeem or exchange Service Shares,
responding to customer inquiries and assisting customers with investment
procedures. Service Shares bear the cost of service fees at the annual rate of
up to 0.50% of the average daily net assets of such Service Shares.
(Institutions that provide services to holders of Administration or Service
Shares are referred to in this Prospectus as "Service Organizations").
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration and Service Shares) to
its customers and thus receive different compensation with respect to
different classes of shares of the Fund. Administration Shares and Service
Shares may each have certain exclusive voting rights on matters relating to
their respective plans. Shares of each class may be exchanged only for shares
of the same class in another fund and certain money market funds sponsored by
Goldman Sachs. The Fund may amend such policy in the future. Dividends paid by
the Fund, if any, with respect to each class of shares will be calculated in
the same manner, at the same time and on the same day and will be in the same
amount, except for differences caused by the fact that the respective account
administration and service fees relating to a particular class will be borne
exclusively by that class. Similarly, the net asset value per share will vary
depending on the class of shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or appraisal rights.
 
  As of February 17, 1995, MGIC, Attn: James A. McGinnis, P.O. Box 297,
Milwaukee, WI 53201 owned beneficially and of record (28.85%) of the Fund.
 
  Under Massachusetts law, there is a remote possibility that shareholders of
a business trust could, under certain circumstances, be held personally liable
as partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
                                      27
<PAGE>
 
  Unless otherwise required by the Act, ordinarily it will not be necessary
for the Trust to hold annual meetings of shareholders. As a result,
shareholders may not consider each year the election of Trustees or the
appointment of independent accountants. Shareholders may remove a Trustee by
the affirmative vote of at least two-thirds of the Trust's outstanding shares
and the Trustees must promptly call a meeting for such purpose when requested
to do so in writing by the record holders of not less than 10% of the
outstanding shares of the Trust. Shareholders may, under certain
circumstances, communicate with other shareholders in connection with
requesting a special meeting of shareholders. The Board of Trustees, however,
will call a special meeting for the purpose of electing Trustees if, at any
time, less than a majority of Trustees holding office at the time were elected
by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue
certificates representing Institutional, Administration or Service Shares.
Instead, the Transfer Agent maintains a record of each Institutional,
Administration and Service shareholder's ownership. Each shareholder receives
confirmation of purchase and redemption orders from the Transfer Agent. Shares
and any dividends and distributions paid by the Fund are reflected in account
statements from the Transfer Agent.
 
                                   TAXATION
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code and intends to continue to qualify for such
treatment. To qualify for treatment as a regulated investment company, the
Fund must satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
  The Fund intends to qualify to pay "exempt-interest dividends," as defined
in the Code. If it so qualifies, dividends paid by the Fund which are
attributable to interest on Municipal Securities and designated by the Fund as
exempt-interest dividends in a written notice mailed to the Fund shareholders
within sixty days after the close of its taxable year may be treated by
shareholders for all purposes as items of interest excludable from their gross
income under Section 103(a) of the Code. The recipient of tax-exempt income is
required to report such income on his federal income tax return. However, a
shareholder is advised to consult his tax adviser with respect to whether
exempt-interest dividends retain the exclusion under Section 103(a) if such
shareholder would be treated as a "substantial user" under Section 147(a)(1)
with respect to some or all of the tax-exempt obligations held by the Fund.
The Code provides that interest on indebtedness incurred or continued to
purchase or carry shares of the Fund is not deductible to the extent
attributable to exempt-interest dividends.
 
  Dividends paid by the Fund from any taxable net investment income, the
excess of net short-term capital gain over net long-term capital loss and
taxable original issue discount or market discount income will be taxable to
shareholders as ordinary income. Dividends paid by the Fund from the excess of
net long-term capital gain over net short-term capital loss will be taxable as
long-term capital gains regardless of how long the shareholders have held
their shares. These tax consequences will apply regardless of whether
distributions are received in cash or reinvested in shares. Certain
distributions paid by the Fund in January of a given year may be taxable to
shareholders as if received the prior
 
                                      28
<PAGE>
 
December 31. Shareholders will be informed annually about the amount and
character of distributions received from the Fund for federal income tax
purposes, including any distributions that may constitute a tax preference
item under the federal alternative minimum tax.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
(unless it is exempt from tax) even though the distribution represents a
return of a portion of the purchase price.
 
  Redemptions and exchanges of shares are taxable events on which a
shareholder may recognize a gain or loss. Any loss realized upon the
redemption of shares with a tax holding period of six months or less is
disallowed to the extent of any tax-exempt dividends received with respect to
such shares and, to the extent not disallowed, is treated as a long-term
capital loss to the extent of any distributions treated as long-term capital
gains with respect to such shares. Any loss realized on the redemption of
shares of the Fund may be disallowed if shares of the Fund are purchased
within a 61-day period beginning 30 days before and ending 30 days after such
redemption.
 
  Although all or a substantial portion of the dividends paid by the Fund may
be excluded by shareholders of the Fund from their gross income for federal
income tax purposes, the Fund may purchase specified private activity bonds,
the interest from which may be a preference item for purposes of the federal
alternative minimum tax (individual and corporate). All exempt-interest
dividends from the Fund will be considered in computing the "adjusted current
earnings" preference item for purposes of the corporate federal alternative
minimum tax, the corporate environmental tax, and the extent, if any, to which
a shareholder's Social Security or certain railroad retirement benefits are
taxable.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on taxable distributions, redemptions
and exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other
shareholders that are not U.S. persons under the Code are subject to different
tax rules and may be subject to nonresident alien withholding at the rate of
30% (or a lower rate provided by an applicable tax treaty) on amounts treated
as ordinary dividends from the Fund.
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local
or foreign taxes on payments received from the Fund. A state income (and
possibly local income and/or intangible property) tax exemption is generally
available to the extent the Fund's distributions are derived from interest on
(or, in the case of intangible taxes, the value of its assets is attributable
to) certain U.S. Government obligations and/or tax-exempt municipal
obligations issued by or on behalf of the particular state or a political
subdivision thereof, provided in some states that certain thresholds for
holdings of such obligations and/or reporting requirements are satisfied.
 
  SHAREHOLDERS SHOULD CONSULT THEIR OWN TAX ADVISORS WITH RESPECT TO THE
FEDERAL, STATE, LOCAL AND FOREIGN TAX CONSEQUENCES OF INVESTING IN THE FUND IN
THEIR PARTICULAR CIRCUMSTANCES. SEE THE
 
                                      29
<PAGE>
 
ADDITIONAL STATEMENT FOR A FURTHER DISCUSSION OF CERTAIN TAX CONSEQUENCES OF
INVESTING IN SHARES OF THE FUND.
 
                            ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at the meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days
when the Investment Adviser, The Northern Trust Company, State Street Bank and
Trust Company and the Federal Reserve Bank of New York are open for business,
which is Monday through Friday except for holidays. Such holidays currently
are: New Year's Day (observed), Martin Luther King Day, Presidents' Day
(observed), Good Friday, Memorial Day (observed), Independence Day, Labor Day,
Columbus Day, Thanksgiving and Christmas. On those days when one or more of
such organizations close early as a result of such day being a partial holiday
or otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                      30
<PAGE>
 
                            REPORTS TO SHAREHOLDERS
 
  Institutional Shareholders will receive an annual report containing audited
financial statements and a semi-annual report. Each Institutional Shareholder
will also be provided with a printed confirmation for each transaction in the
shareholder's account and an individual monthly statement. A year-to-date
statement for any account will be provided upon request made to Goldman Sachs.
 
SUB-ACCOUNTING SERVICE
 
  The Fund has designed special procedures to assist banks and other
institutional investors desiring to establish multiple accounts (master
accounts and their sub-accounts). Sub-accounts may be established with
registration by name and/or number. Institutions will not normally be charged
for this service unless otherwise agreed upon. Upon request, master accounts
will be provided with a monthly summary report which sets forth in order by
account number (or name) the share balance at month end and the income, if any,
together with the total share balance and income, if any, for the master
account.
 
                        PURCHASE OF INSTITUTIONAL SHARES
 
  Institutional Shares of the Fund may be purchased through Goldman Sachs at
the net asset value per share next determined after receipt of an order without
the imposition of a sales load. If, by 3:00 p.m. Chicago time (4:00 p.m. New
York time), an order, a check or a Federal Reserve draft is received by Goldman
Sachs, the price per share will be the net asset value per share computed on
the day the purchase order or such form of payment is received. See "Net Asset
Value."
 
PURCHASE PROCEDURES
 
  Purchases of Institutional Shares may be made by placing an order with
Goldman Sachs at 800-621-2550 and either wiring Federal Funds to The Northern
Trust Company ("Northern") as subcustodian for State Street Bank and Trust
Company ("State Street") on the next Business Day or initiating an ACH transfer
to ensure receipt by Northern on the next Business Day. Purchases may also be
made by check (except that a check drawn on a foreign bank will not be
accepted) or Federal Reserve draft made payable to "Goldman Sachs Trust -- GS
Short Duration Tax-Free Fund" and should be directed to Goldman Sachs Trust --
 GS Short Duration Tax-Free Fund, c/o GSAM Shareholder Services, 4900 Sears
Tower, Chicago, Illinois 60606. Payment of the proceeds of redemption of shares
purchased by check may be delayed for a period of time as described under
"Redemption of Institutional Shares."
 
  In order to make an initial investment in the Fund, an investor must
establish an account with the Fund by furnishing necessary information to the
Fund or Goldman Sachs. An Account Information Form, a copy of which is attached
to this Prospectus, should be used to establish such an account. Subsequent
purchases of shares may be made in the manner set forth in the preceding
paragraph.
 
  The minimum initial investment is $50,000 in Institutional Shares of the Fund
alone or in combination with Institutional Shares of any other mutual fund
sponsored by Goldman Sachs and designated as an eligible fund for this purpose
and the relevant class of any portfolio of Goldman Sachs Money Market Trust.
The minimum investment requirement may be waived for current and former
officers, partners, directors or employees of Goldman Sachs or any of its
affiliates or for other investors at the discretion of the Trust's officers. No
minimum amount is required for subsequent investments. The Fund reserves the
right to redeem the Institutional Shares of any Institutional Shareholder whose
account balance is less than $100 as a result of earlier redemptions. Such
redemptions will not be implemented if the value of an Institutional
Shareholder's account falls below the minimum account balance solely as a
result of market
 
                                       31
<PAGE>
 
conditions. The Trust will give sixty (60) days' prior written notice to
Institutional Shareholders whose Institutional Shares are being redeemed to
allow them to purchase sufficient additional Institutional Shares of the Fund
to avoid such redemption.
 
OTHER PURCHASE INFORMATION
 
  PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is
received by Goldman Sachs by 3:00 p.m. Chicago time, the purchased shares will
be issued and dividends will begin on such shares on the next Business Day,
provided that a Federal Funds wire or an ACH transfer is received by Northern
on such day.
 
  PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT.  If a purchase check or Federal
Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and dividends will begin on such shares on the
next Business Day after the check or Federal Reserve draft is received by
Goldman Sachs.
 
  Banks, trust companies or other institutions through which investors acquire
Institutional Shares may impose charges in connection with transactions in
Institutional Shares. Such institutions should be consulted for information
regarding such charges.
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges by a
particular purchaser (or group of related purchasers). The Fund or Goldman
Sachs may reject or restrict purchases or exchanges of Institutional Shares by
a particular purchaser or group, for example, when a pattern of frequent
purchases and sales or exchanges of Institutional Shares of the Fund is
evident, or if the purchase and sale or exchange orders are, or a subsequent
abrupt redemption might be, of a size that would disrupt management of the
Fund.
 
                               EXCHANGE PRIVILEGE
 
  Institutional Shares of the Fund may be exchanged for (i) Institutional
Shares of any other mutual fund sponsored by Goldman Sachs and designated as an
eligible fund for this purpose and (ii) the relevant class of any portfolio of
Goldman Sachs Money Market Trust at the net asset value next determined either
by writing to Goldman Sachs, Attention: Goldman Sachs Trust -- GS Short
Duration Tax-Free Fund, c/o GSAM Shareholder Services, 4900 Sears Tower,
Chicago, Illinois 60606 or, if previously elected in the Fund's Account
Information Form, by telephone at 800-621-2550 (7:00 a.m. to 3:00 p.m. Chicago
time). A shareholder should obtain and read the prospectus relating to any
other fund and its shares or units and consider its investment objective,
policies and applicable fees before making an exchange. Under the telephone
exchange privilege, Institutional Shares may be exchanged among accounts with
different names, addresses and social security or other taxpayer identification
numbers only if the exchange request is in writing and is received in
accordance with the procedures set forth under "Redemption of Institutional
Shares."
 
  In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Institutional Shares" to confirm
that such instructions are genuine. For federal income tax purposes, an
exchange is treated as a sale of the shares surrendered in the exchange, on
which an investor may realize a gain or loss, followed by a purchase of
Institutional Shares or the relevant class of any portfolio of Goldman Sachs
Money Market
 
                                       32
<PAGE>
 
Trust received in the exchange. Shareholders should consult their own tax
advisers concerning the tax consequences of an exchange.
 
  All exchanges which represent an initial investment in a fund must satisfy
the minimum investment requirements of the fund into which the Institutional
Shares are being exchanged, except that this requirement may be waived at the
discretion of the officers of such fund. Exchanges are available only in states
where exchanges may legally be made. The exchange privilege may be modified or
withdrawn at any time on sixty (60) days' written notice to Institutional
Shareholders and is subject to certain limitations. See "Purchase of
Institutional Shares."
 
                       REDEMPTION OF INSTITUTIONAL SHARES
 
  The Fund will redeem its Institutional Shares upon request of an
Institutional Shareholder on any Business Day at the net asset value next
determined after the receipt by the Transfer Agent of such request in proper
form. See "Net Asset Value." If Institutional Shares to be redeemed were
recently purchased by check, the Fund may delay transmittal of redemption
proceeds until such time as it has assured itself that good funds have been
collected for the purchase of such Institutional Shares. This may take up to
fifteen (15) days. Redemption requests may be made by writing to or calling the
Transfer Agent at the address or telephone number set forth on the inside front
cover page of this Prospectus. An Institutional Shareholder may request
redemptions by telephone if the optional telephone redemption privilege is
elected on the Account Information Form accompanying this Prospectus. It may be
difficult to implement redemptions by telephone in times of drastic economic or
market changes.
 
  In an effort to prevent unauthorized or fraudulent redemption or exchange
requests by telephone, Goldman Sachs employs reasonable procedures specified by
the Trust to confirm that such instructions are genuine. Among other things,
any redemption request that requires money to go to an account or address other
than that designated on the Account Information Form must be in writing and
signed by an authorized person designated on the Account Information Form. Any
such written request is also confirmed by telephone with both the requesting
party and the designated bank account to verify instructions. Exchanges among
accounts with different names, addresses and social security or other taxpayer
identification numbers must be in writing and signed by an authorized person
designated on the Account Information Form. Other procedures may be implemented
from time to time. If reasonable procedures are not implemented, the Trust may
be liable for any loss due to unauthorized or fraudulent transactions. In all
other cases, neither the Fund, the Trust nor Goldman Sachs will be responsible
for the authenticity of redemption or exchange instructions received by
telephone.
 
  Written requests for redemptions must be signed by each Institutional
Shareholder whose signature has been guaranteed by a bank, a securities broker
or dealer, a credit union having authority to issue signature guarantees, a
savings and loan association, a building and loan association, a cooperative
bank, a federal savings bank or association, a national securities exchange, a
registered securities association or a clearing agency, provided that such
institution satisfies the standards established by the Transfer Agent. If
Goldman Sachs receives a redemption request by 3:00 p.m. Chicago time, the
Institutional Shares to be redeemed earn dividends with respect to the day the
request is received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired as Federal Funds to the bank account designated in the
Institutional Shareholder's Account Information Form. Redemption proceeds will
normally be wired on the next Business Day in Federal Funds (for a total one-
day delay), but may be paid up to seven (7) days after receipt of a properly
executed redemption request.
 
                                       33
<PAGE>
 
Wiring of redemption proceeds may be delayed one additional Business Day if the
Federal Reserve Bank is closed on the day redemption proceeds would ordinarily
be wired. In order to change the bank designated on the Account Information
Form to receive redemption proceeds, a written request must be received by the
Transfer Agent. This request must be signature guaranteed as set forth above.
Further documentation may be required for executors, trustees or corporations.
Once wire transfer instructions have been given by Goldman Sachs, neither the
Fund, the Trust nor Goldman Sachs assumes any further responsibility for the
performance of intermediaries or the Institutional Shareholder's bank in the
transfer process. If a problem with such performance arises, the Institutional
Shareholder should deal directly with such intermediaries or bank.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by Goldman Sachs. The request
for such redemption will not be considered to have been received in proper form
until such additional documentation has been received.
 
  Except with respect to Institutional Shareholders whose account balances are
less than $100, Institutional Shares are not redeemable at the option of the
Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                       34
<PAGE>
 
                                   APPENDIX A
 
                    GUIDELINES FOR CERTIFICATION OF TAXPAYER
               IDENTIFICATION NUMBER ON ACCOUNT INFORMATION FORM
 
  You are required by law to provide the Fund with your correct Taxpayer
Identification Number (TIN), regardless of whether you file tax returns.
Failure to do so may subject you to penalties. Failure to provide your correct
TIN and to sign your name in the Certification section of the Account
Information Form could result in withholding of 31% by the Fund for the Federal
backup withholding tax on distributions, redemptions, exchanges and other
payments relating to your account.
 
  Any tax withheld may be credited against taxes owed on your federal income
tax return.
 
  If you do not have a TIN, you should apply for one immediately by contacting
your local office of the Social Security Administration or the Internal Revenue
Service (IRS). Backup withholding could apply to payments relating to your
account while you are awaiting receipt of a TIN.
 
  Special rules apply for certain entities. For example, for an account
established under a Uniform Gifts or Transfers to Minors Act, the TIN of the
minor should be furnished.
 
  If you have been notified by the IRS that you are subject to backup
withholding because you failed to report your interest and/or dividend income
on your tax return and you have not been notified by the IRS that such
withholding should cease, you must cross out item (2) in the Certification
section of the Account Information Form.
 
  If you are an exempt recipient, you should furnish your TIN and certify your
exemption by signing the Certification section. Exempt recipients include:
corporations, tax-exempt pension plans and IRA's, governmental agencies,
financial institutions, registered securities and commodities dealers and
others.
 
  If you are a nonresident alien or foreign entity, you must provide a
completed Form W-8 to the Fund in order to avoid withholding on certain
payments. Other payments to you may be subject to nonresident alien withholding
of up to 30%.
 
  For further information regarding backup and nonresident alien withholding,
see Sections 3406, 1441 and 1442 of the Internal Revenue Code and consult your
tax adviser.
 
                                      A-1
<PAGE>
 
 THIS ACCOUNT INFORMATION FORM SHOULD BE FORWARDED PROMPTLY TO GOLDMAN, SACHS &
                                      CO.
                 NO REDEMPTION CAN BE MADE PRIOR TO ITS RECEIPT
                   GOLDMAN, SACHS & CO.--INSTITUTIONAL FUNDS
                            ACCOUNT INFORMATION FORM
SEND TO: GOLDMAN, SACHS & CO. INSTITUTIONAL FUNDS    MASTER NO._________________
         4900 SEARS TOWER                                        FUND USE ONLY
         CHICAGO, ILLINOIS 60606 
         1-800-621-2550                           DATE: _______________________
 
                              INITIAL INVESTMENT:
 
( ) GOLDMAN SACHS MONEY MARKET TRUST  ( ) GS--ADJUSTABLE RATE GOVERNMENT AGENCY
    Fill in Portfolio(s):                     FUND
( ) OTHER FUND (Please write name of  ( ) GS--CORE FIXED INCOME FUND
    Fund in the space provided        ( ) GS--SHORT DURATION TAX-FREE FUND
    below):                           ( ) GS--SHORT-TERM GOVERNMENT AGENCY FUND
  --------------------------------    ( ) GS--GOVERNMENT AGENCY PORTFOLIO (FOR
                                              FINANCIAL INSTITUTIONS)
- --------------------------------------------------------------------------------
A. ACCOUNT RECORD

   ---------------------------------          ---------------------------------
            NAME OF ACCOUNT                           TELEPHONE NUMBER

   ---------------------------------
          STREET OR P.O. BOX                  U.S. CITIZEN OR
                                              RESIDENT? YES [_] NO [_]   
   ---------------------------------          IF NO IS CHECKED, FILL IN  
    CITY         STATE          ZIP           COUNTRY OF TAX RESIDENCE:  
                                                                           
   ---------------------------------          ---------------------------------
               ATTENTION                      
- --------------------------------------------------------------------------------
B. DIVIDENDS AND DISTRIBUTIONS--CHECK APPROPRIATE BOX (SEE "DIVIDENDS")
  1. DIVIDENDS (INCLUDING NET SHORT TERM       
     CAPITAL GAINS)--                          [_] CASH   [_] UNITS/SHARES
 
  2. NET LONG-TERM CAPITAL GAINS               
     DISTRIBUTIONS--                           [_] CASH   [_] UNITS/SHARES
  3. DIVIDENDS AND CAPITAL GAINS REINVESTED               [_] UNITS/SHARES
     IN ANOTHER GOLDMAN SACHS PORTFOLIO ACCOUNT:
   (SEE PROSPECTUS REGARDING LIMITATIONS ON THIS PRIVILEGE.)
 
   FUND NAME_________________________ ACCOUNT NUMBER__________________________
    (IF NO BOX IS CHECKED, DIVIDENDS AND CAPITAL GAINS DISTRIBUTIONS WILL BE
                                  REINVESTED.)
- --------------------------------------------------------------------------------
C. SOCIAL SECURITY NUMBER OR OTHER TAXPAYER IDENTIFICATION NUMBER CERTIFICATION
   TAXPAYER IDENTIFICATION NUMBER: _____________________________________________
   UNDER PENALTIES OF PERJURY, I CERTIFY THAT (1) THE NUMBER SHOWN ON THIS FORM
   IS MY CORRECT TAXPAYER IDENTIFICATION NUMBER (OR I AM WAITING FOR A NUMBER TO
   BE ISSUED TO ME), AND (2) I AM NOT SUBJECT TO BACKUP WITHHOLDING BECAUSE I AM
   EXEMPT FROM BACKUP WITHHOLDING OR I HAVE NOT BEEN NOTIFIED BY THE INTERNAL
   REVENUE SERVICE (IRS) THAT I AM SUBJECT TO BACKUP WITHHOLDING AS A RESULT OF
   A FAILURE TO REPORT ALL INTEREST OR DIVIDENDS, OR THE IRS HAS NOTIFIED ME
   THAT I AM NO LONGER SUBJECT TO BACKUP WITHHOLDING. SEE THE "GUIDELINES FOR
   CERTIFICATION OF TAXPAYER IDENTIFICATION NUMBER" ON ACCOUNT INFORMATION FORM,
   CONTAINED IN THE APPENDIX TO THE ACCOMPANYING PROSPECTUS.
 
      SIGNATURE             DATE              NAME (PRINT) AND TITLE (IF ANY)

SIGN 
HERE  -------------------------------      -------------------------------------
 
      -------------------------------      -------------------------------------
- --------------------------------------------------------------------------------
D. OPTIONAL TELEPHONE EXCHANGE (SEE "EXCHANGE PRIVILEGE")
   [_] GOLDMAN, SACHS & CO. IS HEREBY AUTHORIZED TO ACCEPT AND ACT UPON
   TELEPHONE INSTRUCTIONS FROM THE UNDERSIGNED OR ANY OTHER PERSON FOR THE
   EXCHANGE OF SHARES/UNITS OF THE FUND INTO ANY FUND DESCRIBED IN THE
   ACCOMPANYING PROSPECTUS. THE UNDERSIGNED UNDERSTANDS AND AGREES THAT NEITHER
   THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. WILL BE LIABLE FOR ANY LOSS,
   EXPENSE, OR COST ARISING OUT OF ANY TELEPHONE REQUEST EFFECTED HEREUNDER.
<PAGE>
 
- --------------------------------------------------------------------------------
 
E. OPTIONAL REDEMPTION PLANS--CHECK APPROPRIATE BOX (SEE "REDEMPTION OF
   UNITS/SHARES")
   [_] 1. I AUTHORIZE GOLDMAN, SACHS & CO. TO HONOR TELEPHONE, TELEGRAPHIC, OR
   OTHER INSTRUCTIONS WITHOUT SIGNATURE GUARANTEE, FROM ANY PERSON FOR THE
   REDEMPTION OF SHARES FOR THE ABOVE ACCOUNT PROVIDED THAT THE PROCEEDS ARE
   TRANSMITTED TO THE FOLLOWING BANK ACCOUNT(S) ONLY. I UNDERSTAND ANY CHANGES
   TO THE FOLLOWING INFORMATION MUST BE MADE IN WRITING TO GOLDMAN, SACHS & CO.,
   MUST CONTAIN THE APPROPRIATE NUMBER OF SIGNATURES LISTED BELOW AND ALL
   SIGNATURES MUST BE SIGNATURE GUARANTEED. ABSENT ITS OWN GROSS NEGLIGENCE,
   NEITHER THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. SHALL BE LIABLE FOR SUCH
   REDEMPTIONS OR FOR PAYMENTS MADE TO ANY UNAUTHORIZED ACCOUNT.
                                       OR
   [_] 2. I HAVE FURNISHED GOLDMAN, SACHS & CO. WITH A SIGNATURE GUARANTEE (SEE
   SECTION G). I AUTHORIZE GOLDMAN, SACHS & CO. TO HONOR TELEPHONE, TELEGRAPHIC,
   OR OTHER INSTRUCTIONS, FROM ANY PERSON FOR THE REDEMPTION OF SHARES FOR THE
   ABOVE ACCOUNT PROVIDED THAT THE PROCEEDS ARE TRANSMITTED TO THE FOLLOWING
   BANK ACCOUNT(S) ONLY. ANY CHANGES TO THE FOLLOWING INFORMATION MUST BE MADE
   IN WRITING TO GOLDMAN, SACHS & CO. (BUT WITHOUT SIGNATURE GUARANTEE) AND
   CONTAIN THE APPROPRIATE NUMBER OF SIGNATURES LISTED BELOW. ABSENT ITS OWN
   GROSS NEGLIGENCE, NEITHER THE APPLICABLE FUND NOR GOLDMAN, SACHS & CO. SHALL
   BE LIABLE FOR SUCH REDEMPTIONS OR FOR PAYMENTS MADE TO ANY UNAUTHORIZED
   ACCOUNT.
 
PLEASE COMPLETE THE FOLLOWING BANK ACCOUNT INFORMATION AND PLACE A LINE THROUGH
THE UNUSED PORTION. ADDITIONAL INSTRUCTIONS MAY BE ADDED ON SEPARATE PAGES, IF
NECESSARY.
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
BANK NAME                                 BANK ROUTING NO.
 
- --------------------------------------------------------------------------------
STREET ADDRESS       CITY          STATE          ZIP
 
- --------------------------------------------------------------------------------
ACCOUNT NAME         ACCOUNT NO.
 
NUMBER OF BANK ACCOUNT DESTINATIONS COMPLETED IN SECTION E OF THIS FORM: [_]
 
- --------------------------------------------------------------------------------
  [_] 3. SPECIAL DRAFT (TRANSFER AGENT TO SUPPLY)
  [_] 4. BY MAIL
<PAGE>
 
F. SIGNATURE AUTHORIZATION

   BY THE EXECUTION OF THIS ACCOUNT INFORMATION FORM, THE UNDERSIGNED REPRESENTS
   AND WARRANTS THAT IT HAS FULL RIGHT, POWER AND AUTHORITY TO MAKE THE
   INVESTMENT APPLIED FOR PURSUANT TO THIS APPLICATION AND IS ACTING FOR ITSELF
   OR IN SOME FIDUCIARY CAPACITY IN MAKING SUCH INVESTMENT, AND THE
   INDIVIDUAL(S) SIGNING ON BEHALF OF THE UNDERSIGNED REPRESENT AND WARRANT THAT
   THEY ARE DULY AUTHORIZED TO SIGN THIS APPLICATION AND TO PURCHASE AND REDEEM
   UNITS/SHARES ON BEHALF OF THE UNDERSIGNED. THE UNDERSIGNED AFFIRMS THAT IT
   HAS RECEIVED A CURRENT FUND PROSPECTUS.

   THE UNDERSIGNED UNDERSTANDS THAT A LESSER DEGREE OF FLEXIBILITY CONCERNING
   THE PRECISE TIMING OF A REDEMPTION OF ITS INVESTMENT IN THE GS ADJUSTABLE
   RATE GOVERNMENT AGENCY FUND, GS CORE FIXED INCOME FUND, GS SHORT-TERM
   GOVERNMENT AGENCY FUND, GS SHORT DURATION TAX-FREE FUND OR GS GOVERNMENT
   AGENCY PORTFOLIO (FOR FINANCIAL INSTITUTIONS), AS WELL AS ALL OTHER NON-MONEY
   MARKET FUNDS, INCREASES THE LIKELIHOOD THAT THE SHAREHOLDER WILL BE REQUIRED
   TO REDEEM SHARES UNDER UNFAVORABLE MARKET CONDITIONS. IF SHARES ARE REDEEMED
   AT A DISADVANTAGEOUS TIME, THE VALUE OF THE FUND'S SHARES UPON REDEMPTION MAY
   BE LESS THAN THE PRICE AT WHICH THE FUND'S SHARES WERE PURCHASED. SINCE NONE
   OF THE FUNDS LISTED IN THIS PARAGRAPH IS A MONEY MARKET FUND OR MAINTAINS A
   CONSTANT NET ASSET VALUE PER SHARE, THE UNDERSIGNED MAY EXPERIENCE A LOSS OF
   PRINCIPAL ON ITS INVESTMENTS IN ANY SUCH FUND DURING ANY PARTICULAR PERIOD.

               SIGNATURE                       NAME (PRINT) AND TITLE (IF ANY)
               ---------                       -------------------------------
 
SIGN 
HERE ---------------------------------         ---------------------------------

     ---------------------------------         ---------------------------------

     ---------------------------------         ---------------------------------
NUMBER OF SIGNATURES REQUIRED TO MAKE CHANGES TO THIS FORM: [_]
- --------------------------------------------------------------------------------
G. SIGNATURE GUARANTEE
                                                 AFFIX GUARANTEE STAMP HERE
   ---------------------------------
        SIGNATURE GUARANTEED BY

   ---------------------------------
         AUTHORIZED SIGNATURE
- --------------------------------------------------------------------------------
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Summary....................................................................   3
Financial Highlights.......................................................   8
Investment Objective and Policies..........................................   9
Investment Adviser.........................................................  10
Municipal Securities and Other Investments.................................  11
Other Investments and Practices............................................  15
Risk Factors...............................................................  19
Investment Restrictions....................................................  22
Portfolio Turnover.........................................................  22
Management.................................................................  22
Dividends..................................................................  24
Net Asset Value............................................................  25
Performance Information....................................................  25
Shares of the Trust........................................................  26
Taxation...................................................................  28
Additional Information.....................................................  30
Reports to Shareholders....................................................  31
Purchase of Institutional Shares...........................................  31
Exchange Privilege.........................................................  32
Redemption of Institutional Shares.........................................  33
Appendix A................................................................. A-1
Account Application Form
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
 
                               GS SHORT DURATION
                                 TAX-FREE FUND
                             INSTITUTIONAL SHARES
 
                                  MANAGED BY
                                  ----------

                                 GOLDMAN SACHS
                               ASSET MANAGEMENT,
                       A SEPARATE OPERATING DIVISION OF
 
                             GOLDMAN, SACHS & CO.
 
                                --------------
 
                                  PROSPECTUS
 
                                --------------
 
                             GOLDMAN, SACHS & CO.
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                        GS SHORT DURATION TAX-FREE FUND
                             ADMINISTRATION SHARES
 
                                  MANAGED BY
                                  ----------

                        GOLDMAN SACHS ASSET MANAGEMENT
                                AN AFFILIATE OF
                             GOLDMAN, SACHS & CO.
 
                               ----------------
 
  GS Short Duration Tax-Free Fund (the "Fund") is one fund in a family of
funds advised by Goldman Sachs Asset Management (the "Investment Adviser") or
its affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
  The Fund seeks to provide investors with a high level of current income,
consistent with relatively low volatility of principal, that is exempt from
regular federal income tax. The Fund will seek to achieve its objective
primarily through investments in fixed income municipal securities. All of
such securities will have remaining effective maturities of five years or
less. The Fund will maintain an average portfolio duration of two to three
years. The Fund's investments in municipal securities at the time of
investment, will be rated at least A by Standard & Poor's Ratings Group
("Standard & Poor's") or Moody's Investors Service, Inc. ("Moody's") or their
equivalent ratings or, if unrated by such rating organizations, determined by
the Investment Adviser to be of comparable credit quality. THE FUND'S WEIGHTED
AVERAGE PORTFOLIO MATURITY WILL, UNDER NORMAL CIRCUMSTANCES, BE SIGNIFICANTLY
LONGER THAN THE FUND'S AVERAGE PORTFOLIO DURATION OF TWO TO THREE YEARS.
 
  Goldman Sachs Asset Management, New York, New York, a separate operating
division of Goldman, Sachs & Co., serves as the Fund's investment adviser.
Goldman, Sachs & Co. serves as the Fund's distributor and transfer agent. The
Trust's custodian is State Street Bank and Trust Company.
 
                                                       (continued on next page)
 
ADMINISTRATION SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR
GUARANTEED OR ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION,
AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL
RESERVE BOARD OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN ADMINISTRATION
SHARES OF THE FUND INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF
PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
                 The date of this Prospectus is March 1, 1995
<PAGE>
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Administration Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from institutions ("Service Organizations") that hold,
directly or through an agent, Administration Shares for the benefit of their
customers, or Goldman, Sachs & Co. by calling the telephone number, or writing
to one of the addresses, listed below.
 
GOLDMAN SACHS TRUST                    GOLDMAN SACHS ASSET MANAGEMENT
4900 SEARS TOWER                       INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606                ONE NEW YORK PLAZA
                                       NEW YORK, NEW YORK 10004
 
 
GOLDMAN, SACHS & CO.                   GOLDMAN, SACHS & CO.
DISTRIBUTOR                            TRANSFER AGENT
85 BROAD STREET                        4900 SEARS TOWER
NEW YORK, NEW YORK 10004               CHICAGO, ILLINOIS 60606
 
TOLL FREE (IN U.S.)................... 800-621-2550
 
                                       2
<PAGE>
 
                                    SUMMARY
 
                                  INTRODUCTION
 
  GS Short Duration Tax-Free Fund (the "Fund") is one fund in a family of funds
advised by Goldman Sachs Asset Management (the "Investment Adviser") or its
affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a high level of
current income, consistent with relatively low volatility of principal, that is
exempt from regular federal income tax. The Fund will seek to achieve its
objective primarily through investments in fixed income securities ("Tax-Free
Securities") issued by or on behalf of states, territories and possessions of
the United States (including the District of Columbia) and their political
subdivisions, agencies and instrumentalities, the interest on which is exempt
from regular federal income tax and is not an item of tax preference under the
federal alternative minimum tax. In addition, Tax-Free Securities include
certain participation interests and other securities described under "Municipal
Securities and Other Investments" the interest on which is exempt from such
taxes.
 
  Under normal market conditions, the Fund will invest at least 80% of its net
assets in Tax-Free Securities. Although it does not expect to do so, the Fund
may invest up to 20% of its net assets in private activity bonds that may
subject certain investors to the federal alternative minimum tax. Tax-Free
Securities and private activity bonds are referred to herein as "Municipal
Securities." The Fund, although it is not expected to do so, may also invest up
to 20% of its net assets in taxable investments which are obligations issued or
guaranteed by the U.S. Government, its agencies and instrumentalities and
repurchase agreements collateralized by U.S. Government securities ("Taxable
Investments"). Except as set forth below, at no time will the Fund's
investments in private activity bonds and Taxable Investments exceed, in the
aggregate, 20% of the Fund's net assets. For temporary defensive purposes, the
Fund may invest more than 20% of its net assets in Taxable Investments. The
Fund may generate capital gains that are taxable. See "Taxation."
 
  The Fund will maintain an average portfolio duration, as defined under
"Investment Objectives and Policies," of two to three years. The individual
Municipal Securities in which the Fund invests will have remaining effective
maturities of five years or less. The effective maturity of a Municipal
Security, unlike its stated maturity, is the period remaining until the
principal can be recovered through a mandatory redemption provision or the
exercise of a put or demand feature by the holder of the Municipal Security or
the period until the next scheduled auction date for an auction rate Municipal
Security. Since the Fund uses duration as a criteria, there are no maximum
limitations as to average weighted portfolio maturity or permissible stated
maturity with respect to individual securities.
 
  The Fund's investments in Municipal Securities at the time of investment will
be rated at least A by Standard & Poor's or Moody's or their equivalent ratings
or, if unrated by such rating organizations, determined by the Investment
Adviser to be of comparable credit quality.
 
  Although the Fund's net asset value per share will fluctuate more than that
of a money market fund, which attempts to maintain a stable net asset value per
share, the Fund will attempt to maintain limited
 
                                       3
<PAGE>
 
fluctuation in net asset value per share relative to longer-term municipal bond
funds, but is not expected to generate as high a level of income as such funds.
In periods of falling interest rates the Fund may experience a lower total
return than a longer-term, fixed rate municipal bond fund; however, it is
expected that the Fund will have less interest rate risk and net asset value
fluctuation than such funds, but more than those of a money market fund. There
can be no assurance that the Fund will achieve its investment objective.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Asset Management,
a separate operating division of Goldman, Sachs & Co. ("Goldman Sachs"), serves
as the Fund's investment adviser. In this capacity, the Investment Adviser
provides investment advisory and administrative services and receives from the
Fund a monthly fee equal on an annual basis to 0.40% of the Fund's average
daily net assets. Goldman Sachs is registered with the Securities and Exchange
Commission (the "SEC") as an investment adviser. See "Investment Adviser" and
"Management --Investment Adviser."
 
                PURCHASE AND REDEMPTION OF ADMINISTRATION SHARES
 
  It is expected that all purchasers of Administration Shares of the Fund will
be Service Organizations or their nominees. Customers of Service Organizations
may invest in Administration Shares only through their Service Organizations.
Administration Shares of the Fund may be purchased by Service Organizations
through Goldman Sachs at the current net asset value per share without the
imposition of a sales load. The Fund does not have any minimum purchase or
account requirements with respect to Administration Shares. A Service
Organization may, however, impose a minimum amount for initial and subsequent
investments in Administration Shares, and may establish other requirements such
as a minimum account balance. See "Purchase of Administration Shares." The Fund
will redeem its Administration Shares upon request of a shareholder on any
Business Day at the net asset value next determined after receipt of such
request in proper form. See "Redemption of Administration Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
inquiries from Service Organizations. See "Management --Distributor and
Transfer Agent."
 
                                  RISK FACTORS
 
  The Fund's investments in Municipal Securities entail certain risks,
including adverse income and principal value fluctuation associated with
general economic conditions affecting the Municipal Securities markets, the
issuers and guarantors of Municipal Securities and the facilities financed by
Municipal Securities as well as adverse interest rate changes and volatility of
yields of short and intermediate term Municipal Securities. See "Risk Factors."
In addition, the Fund's yield will be subject to risks associated with
particular issues in which it invests, including potential defaults by issuers
and guarantors and the size and rating of an issue.
 
                                       4
<PAGE>
 
 
  While the Fund will seek to provide investors with a high level of current
income, consistent with low volatility of principal, that is exempt from
regular federal income tax, the Fund's current income and net asset value will
fluctuate. If the Fund invests in Taxable Investments, as permitted,
distributions of any income earned on such Taxable Investments will result in
taxable income to shareholders. If the Fund acquires Municipal Securities or
Taxable Investments at a market discount, distributions from accrued market
discount income will also be taxable to shareholders. If the Fund invests in
private activity bonds, distributions attributable to the interest on such
securities may be a tax preference item subject to the federal alternative
minimum tax. A reduction in federal income tax rates would reduce the tax
equivalent yield of the Fund and would tend to reduce the value of Municipal
Securities held in the Fund's portfolio. Conversely, an increase in federal
income tax rates would increase the taxable equivalent yield of the Fund. In
addition, changes in federal law adversely affecting the tax-exempt status of
income derived from Municipal Securities could significantly affect both the
supply and demand for Municipal Securities, which in turn could affect the
Fund's ability to acquire and dispose of Municipal Securities at favorable
prices. Shareholders may be subject to state and local taxes on income received
from the Fund. Although over the long term it is expected that the volatility
of the Fund will be low in relation to longer-term bond funds, the inherent
volatility risk is such that, during any particular period, there may be a loss
of principal.
 
  The Fund may engage in short-term trading, to benefit from yield disparities
among different issues of Municipal Securities, to seek short-term profits
during periods of fluctuating interest rates or for other reasons. Such trading
will increase the Fund's portfolio turnover rate and may therefore increase the
incidence of short-term capital gains (distributions of which are taxable to
shareholders as ordinary income).
 
  The Fund may enter into transactions in certain derivative instruments
including futures, options on futures, options on securities and securities
indices and interest rate swaps, floors, caps and collars. The Fund may enter
into these transactions for hedging purposes and to seek to increase total
return. The Fund's use of such investment practices and derivative instruments
involves certain risks. These include the risk of loss if the Investment
Adviser is incorrect in its expectation of fluctuations in securities prices or
interest rates in connection with transactions to increase total return. In
addition, in the case of hedging transactions, there may be a possible lack of
correlation between changes in the value of the hedging instruments and the
portfolio assets being hedged. The Fund could also be exposed to risk of loss
if it is unable to close out its derivative positions because of an illiquid
secondary market. Distributions of any net income or net realized capital gains
from such derivative transactions are taxable to shareholders.
 
  CONFLICTS OF INTEREST. The involvement of Goldman Sachs, its divisions and
affiliates (including the Investment Adviser), partners and officers, in the
investment activities and business operations of the Fund may present certain
conflicts of interest, as described under "Management -- Investment Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends to declare a daily dividend determined with the objective of
distributing the majority of net investment income while enhancing the
stability of principal. Such dividends will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
 
                                       5
<PAGE>
 
fiscal year, dividends accrued and paid will constitute all or substantially
all of the Fund's net investment income. From time to time a portion of such
dividends may constitute an economic return of capital, a portion of which may
nevertheless be taxable as ordinary income. The Fund also intends that net
realized capital gains, if any, after offset by any available capital loss
carryforwards from prior taxable years, will be declared as a dividend at least
annually. Recordholders of Administration Shares will receive dividends in
additional Administration Shares of the Fund or may elect to receive cash. For
further information concerning dividends, see "Dividends."
 
                                    TAXATION
 
  The Fund has qualified and elected to be treated as a regulated investment
company under Subchapter M of the Internal Revenue Code of 1986, as amended
(the "Code"), and it intends to continue to qualify for such treatment. The
Fund will distribute the tax-exempt interest it receives from Municipal
Securities as "exempt-interest dividends." As a regulated investment company,
the Fund will not be required to pay federal income tax on taxable and tax-
exempt income or capital gains that it distributes to its shareholders in
accordance with the timing requirements of the Code. Shareholders may treat the
exempt-interest dividends they receive from the Fund as interest exempt from
regular federal income tax, although a portion of such dividends may be subject
to the federal alternative minimum tax for some shareholders. Distributions
from the Fund's taxable income or capital gain, if any, generally will be
taxable. See "Taxation."
 
                              ADMINISTRATION PLAN
 
  The Trust, on behalf of the Fund, has adopted an Administration Plan with
respect to the Administration Shares of the Fund which authorizes the Fund to
compensate Service Organizations for providing account administration services
to their customers who are the beneficial owners of such Shares. The Trust, on
behalf of the Fund, will enter into agreements with each Service Organization
which will provide for compensation to the Service Organization in an amount up
to 0.25% (on an annualized basis) of the average daily net assets of
Administration Shares of the Fund attributable to or held in the name of the
Service Organization for its customers. See "Administration Plan."
 
                                       6
<PAGE>
 
 
                   FEES AND EXPENSES (ADMINISTRATION SHARES)*
 
<TABLE>
<CAPTION>
                                                             GS SHORT DURATION
                                                               TAX-FREE FUND
                                                             -----------------
<S>                                                          <C>
SHAREHOLDER TRANSACTION EXPENSES:
 Maximum Sales Load Imposed on Purchases....................       None
 Maximum Sales Load Imposed on Reinvested Dividends.........       None
 Redemption Fees............................................       None
 Exchange Fees..............................................       None
ANNUAL FUND OPERATING EXPENSES: (AS A PERCENTAGE OF AVERAGE
NET ASSETS)
 Management Fees............................................       0.40%
 Account Administration Fees................................       0.25%**
 Other Expenses (after expense limitation)..................       0.05%***
                                                                   ----
  TOTAL FUND OPERATING EXPENSES (AFTER EXPENSE LIMITATION)..       0.70%***
                                                                   ====
</TABLE>
 
EXAMPLE:

You would pay the following expenses on a hypothetical $1,000 investment,
assuming (1) a 5% annual return and (2) redemption at the end of each time
period:

<TABLE>
<CAPTION>

1 YEAR  3 YEARS  5 YEARS  10 YEARS
- ------  -------  -------  --------
<S>     <C>      <C>      <C>
$ 7       $22      $39      $87
</TABLE>

- --------
*   The information set forth in the foregoing table and hypothetical example
    relates only to Administration Shares of the Fund. See "Shares of the
    Trust." Institutional Shares and Service Shares of the Fund are subject to
    different fees and expenses. Institutional Shares are not subject to any
    administration or service fees. Service Shares are subject to a service fee
    of up to 0.50% of average daily net assets. All other expenses related to
    Institutional Shares and Service Shares are the same as for Administration
    Shares.
**  Service Organizations (other than broker-dealers) may charge other fees to
    their customers who are beneficial owners of Administration Shares in
    connection with their customer accounts. See "Administration Plan."
*** The Investment Adviser voluntarily agreed to reduce or limit certain "Other
    Expenses" of the Fund (excluding advisory fees, payments to Service
    Organizations, taxes, interest and brokerage and litigation,
    indemnification and other extraordinary expenses) to the extent such
    expenses exceeded 0.05% per annum of the Fund's average net assets. If the
    Investment Adviser had not agreed to reduce or otherwise limit certain
    "Other Expenses" of the Fund, the Fund's other expenses and total operating
    expenses attributable to Administration Shares of the Fund would have been
    0.21% and 0.86%, respectively. The foregoing table and example also reflect
    current operating expenses that will be applicable on an ongoing basis. See
    "Management -- Investment Adviser."
 
  The purpose of the foregoing table is to assist investors in understanding
the various costs and expenses of the Fund that an investor in the Fund will
bear directly or indirectly. The costs and expenses included in the table and
hypothetical example above should not be considered as representative of past
or future expenses. Actual fees and expenses may be greater or less than those
indicated. Moreover, while the example assumes a 5% annual return, the Fund's
actual performance will vary and may result in an actual return greater or less
than 5%. See "Management" and "Administration Plan."
 
                                       7
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
 
         SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  The following data with respect to Institutional Shares, Administration
Shares and Service Shares of the Fund outstanding during the periods indicated
has been audited by Arthur Andersen LLP, independent public accountants, as
indicated in their report incorporated by reference and attached to the
Additional Statement from the Fund's annual report to shareholders for the
fiscal year ended October 31, 1994 (the "Annual Report"). This information
should be read in conjunction with the financial statements and related notes
incorporated by reference and attached to the Additional Statement. The Annual
Report also contains performance information and is available upon request and
without charge by writing to any of the addresses on the inside cover of this
Prospectus.
 
<TABLE>
<CAPTION>
                                                                                DISTRIBUTIONS
                                  INCOME FROM INVESTMENT OPERATIONS         TO SHAREHOLDERS FROM
                               ------------------------------------------  -----------------------
                                                                TOTAL
                     NET ASSET               NET REALIZED   INCOME (LOSS)                          NET ASSET
                     VALUE AT     NET       AND UNREALIZED      FROM          NET     NET REALIZED VALUE AT
                     BEGINNING INVESTMENT   GAIN (LOSS) ON   INVESTMENT    INVESTMENT   GAIN ON     END OF       TOTAL
                     OF PERIOD   INCOME      INVESTMENTS     OPERATIONS      INCOME   INVESTMENTS   PERIOD      RETURN(c)
                     --------- ----------   --------------  -------------  ---------- ------------ ------------ --------- 
FOR THE YEARS ENDED OCTOBER 31,
<S>                  <C>       <C>          <C>             <C>            <C>        <C>          <C>       <C>
1994-
Institutional
shares..........      $10.23    $0.3787(a)     $(0.3575)(a)    $0.0212 (a)  $(0.3787)   $(0.0825)    $9.79    0.17%
1994-Administration
shares..........       10.23     0.3537(a)      (0.3575)(a)    (0.0038)(a)   (0.3537)    (0.0825)     9.79   (0.11)
1994-Service
shares (b)......        9.86     0.0475(a)      (0.0700)(a)    (0.0225)(a)   (0.0475)        --       9.79   (0.32)(d)
1993-
Institutional
shares..........        9.93     0.3834          0.3000         0.6834       (0.3834)        --      10.23    7.03
1993-Administration
shares (b)......       10.16     0.1555          0.0720         0.2275       (0.1555)        --      10.23    2.28 (d)
FOR THE PERIOD OCTOBER 1, 1992 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1992-
Institutional
shares..........       10.00     0.0341         (0.0700)       (0.0359)      (0.0341)        --       9.93   (0.34)(d)

<CAPTION> 
                                                                              RATIOS
                                                                        ASSUMING NO WAIVER
                                                                          OF-ADVISORY-FEES
                                                                       OR EXPENSE LIMITATIONS 
                                                                       ----------------------
                                  RATIO OF NET                                    RATIO OF NET
                     RATIO OF NET  INVESTMENT              NET ASSETS  RATIO OF    INVESTMENT
                     EXPENSES TO   INCOME TO   PORTFOLIO   AT END OF  EXPENSES TO  INCOME TO
                     AVERAGE NET  AVERAGE NET  TURNOVER      PERIOD     AVERAGE   AVERAGE NET
                       ASSETS       ASSETS      RATIO     (IN 000'S)  NET ASSETS     ASSETS
                     ------------ ------------ ----------- ---------- ----------- ------------
<S>                  <C>          <C>          <C>         <C>        <C>         <C>
1994-
Institutional
shares..........         0.45%        3.74%     354.00%     $83,704      0.61%        3.58%
1994-Administration
shares..........         0.70         3.51      354.00        3,866      0.86         3.35
1994-Service
shares (b)......         0.95(e)      4.30(e)   354.00           44      1.11(e)      4.14(e)
1993-
Institutional
shares..........         0.41         3.70      404.60      115,803      1.06         3.05
1993-Administration
shares (b)......         0.70(e)      3.32(e)   404.60          911      1.07(e)      2.95(e)
FOR THE PERIOD OCTOBER 1, 1992 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1992-
Institutional
shares..........         0.05(e)      4.58(e)    31.19(d)    14,601      2.68(e)      1.95(e)
</TABLE>
- ----
(a) Calculated based on the average shares outstanding methodology.
(b) Administration and Service share activity commenced on May 20, 1993 and
    September 20, 1994, respectively.
(c) Assumes investment at the net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(d) Not annualized.
(e) Annualized.
 
                                       8
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a high level of
current income, consistent with relatively low volatility of principal, that
is exempt from regular federal income tax. The Fund will seek to achieve its
objective primarily through investments in fixed income securities ("Tax-Free
Securities") issued by or on behalf of states, territories and possessions of
the United States (including the District of Columbia) and their political
subdivisions, agencies and instrumentalities, the interest on which is exempt
from regular federal income tax and is not a tax preference item under the
federal alternative minimum tax. Tax-Free Securities are also defined to
include certain participation interests in such securities the interest on
which is, in the opinion of counsel, exempt from such taxes. In addition, the
definition of Tax-Free Securities includes general obligation and revenue
bonds and other obligations described under "Municipal Securities and Other
Investments."
 
  Under normal market conditions, the Fund will invest at least 80% of its net
assets in Tax-Free Securities. Although it does not expect to do so, the Fund
may invest up to 20% of its net assets in private activity bonds that may
subject certain investors to the federal alternative minimum tax.
 
  The Fund's investments in Municipal Securities will at the time of
investment be rated at least A by Standard & Poor's or Moody's or their
respective equivalent ratings or, if unrated by such rating organizations,
determined by the Investment Adviser to be of comparable credit quality. A
security will be deemed to have met this requirement if it receives the
minimum required rating from at least one such rating organization even if it
has been rated below the minimum rating by one or more other rating
organizations. The credit rating assigned to Municipal Securities by these
rating organizations or by the Investment Adviser may reflect the existence of
guarantees, letters of credit or other credit enhancement features available
to the issuers or holders of such Municipal Securities.
 
  Although the Fund is not expected to do so, the Fund may invest as much as
20% of its net assets in taxable investments, which are defined as obligations
issued or guaranteed by the U.S. Government, its agencies and
instrumentalities and repurchase agreements collateralized by U.S. Government
securities ("Taxable Investments"). Except as set forth below, at no time will
the Fund's investments in private activity bonds and Taxable Investments
exceed, in the aggregate, 20% of the Fund's net assets. The Fund may for
temporary defensive purposes depart from its stated investment objective and
invest more than 20% of its net assets in Taxable Investments. The Fund's
investments in Municipal Securities and Taxable Investments may also generate
taxable capital gains. See "Taxation."
 
  The individual Municipal Securities in which the Fund invests will have
effective maturities of five years or less. The effective maturity of a
Municipal Security is defined as the period remaining until the earliest date
when the Fund can recover the principal amount of such security through
mandatory redemption or prepayment by the issuer, the exercise by the Fund of
a put option, demand feature or tender option granted by the issuer or a third
party or the payment of the principal on the stated maturity date. The
effective maturity of an auction rate Municipal Security is defined as the
period remaining until the next scheduled auction date. Thus, the effective
maturity of a Municipal Security may be substantially shorter than its final
stated maturity.
 
  The Fund will maintain an average portfolio duration in a range of two to
three years. The maturity of a security focuses on the time at which the final
payment is made. Maturity does not, however, take
 
                                       9
<PAGE>
 
into account payments which are made prior to the final payment, such as
periodic coupon payments. Duration, on the other hand, takes into account all
such interim payments by measuring the value weighted average maturity of all
principal and interest payments over time. For this purpose, the maturity of
principal payments will be determined in the same manner as the effective
maturity of individual Municipal Securities. The duration of the Fund's
portfolio will be shortened by the acquisition of Municipal Securities at a
premium, the sale of futures contracts and investments in variable and
floating rate securities, auction rate securities, tender option bonds,
participations and other Municipal Securities that are subject to put, demand,
tender, auction or mandatory redemption features and pre-refunded Municipal
Securities. The duration of the Fund's portfolio will be lengthened by the
acquisition of Municipal Securities at a discount, the purchase of futures
contracts and the purchase of when-issued or forward commitment securities,
zero coupon, deferred interest and capital appreciation bonds and inverse
floating rate instruments. Since the Fund uses duration as a criterion, there
are no maximum limitations as to average weighted portfolio maturity or
permissible stated maturity with respect to individual securities.
 
  Within this context, duration is a significant indicator of the sensitivity
of the Fund's net asset value to changes in market interest rates. However,
the computation of duration involves a greater degree of judgment and less
certainty than the computation of weighted average portfolio maturity based on
the stated maturities of portfolio investments. The Fund's weighted average
portfolio maturity will, under normal circumstances, be significantly longer
than the Fund's average portfolio duration of two to three years.
 
  Except as otherwise stated under "Investment Restrictions," and except for
the Fund's policy to invest under normal market conditions, 80% of its net
assets in Tax-Free Securities, the Fund's investment objective and policies
are not fundamental and may be changed without a vote of shareholders. If
there is a change in the Fund's investment objective, shareholders should
consider whether the Fund remains an appropriate investment in light of their
then current financial positions and needs. There can be no assurance that the
Fund will achieve its investment objective.
 
                              INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Asset Management, a separate
operating division of Goldman Sachs. The management services provided by the
Investment Adviser are subject to the general supervision of the Trust's Board
of Trustees. The Investment Adviser and its affiliates serve a wide range of
clients including private and public pension funds, endowments, foundations,
banks, thrifts, insurance companies, corporations, private investors and
family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and market expertise
of Goldman Sachs, whose investment research effort is one of the largest in
the industry. The in-depth information and
 
                                      10
<PAGE>
 
analyses generated by Goldman Sachs' research analysts, economists and
portfolio strategists are available to the Investment Adviser.
 
                  MUNICIPAL SECURITIES AND OTHER INVESTMENTS
 
MUNICIPAL SECURITIES
 
  Municipal Securities consist of bonds, notes and other instruments issued by
or on behalf of states, territories and possessions of the United States
(including the District of Columbia) and their political subdivisions,
agencies or instrumentalities, the interest on which is, in the opinion of
bond counsel for the issuers or counsel selected by the Investment Adviser,
exempt from regular federal income tax (i.e., excluded from gross income for
federal income tax purposes but not necessarily exempt from the federal
alternative minimum tax or from state or local taxes). In addition, Municipal
Securities include participation interests in such securities the interest on
which is, in the opinion of bond counsel for the issuers or counsel selected
by the Investment Adviser, exempt from regular federal income tax. The
definition of Municipal Securities includes other types of securities that
currently exist or may be developed in the future and that pay interest that
is, or will be, in the opinion of counsel, as described above, exempt from
regular federal income tax, provided that investing in such securities is
consistent with the Fund's investment objective and policies. The Fund will
reflect any such change in its definition of Municipal Securities in its
Prospectus.
 
  Municipal Securities are often issued to obtain funds for various public
purposes, including the construction of a wide range of public facilities such
as bridges, highways, housing, hospitals, mass transportation, schools,
streets and water and sewer works. Other public purposes for which Municipal
Securities may be issued include refunding outstanding obligations, obtaining
funds for general operating expenses, and obtaining funds to lend to other
public institutions and facilities. Municipal Securities also include "private
activity" or industrial development bonds, which are issued by or on behalf of
public authorities to obtain funds for privately-operated housing facilities,
airport, mass transit or port facilities, sewage disposal, solid waste
disposal or hazardous waste treatment or disposal facilities and certain local
facilities for water supply, gas or electricity. In addition, proceeds of
certain industrial development bonds are used for constructing, equipping,
repairing or improving privately operated industrial or commercial facilities.
The interest income from private activity bonds may subject certain investors
to the federal alternative minimum tax.
 
  The two principal classifications of Municipal Securities are "general
obligations" and "revenue obligations." General obligations are secured by the
issuer's pledge of its full faith and credit for the payment of principal and
interest, although the characteristics and enforcement of general obligations
may vary according to the law applicable to the particular issuer. Revenue
obligations, which include, but are not limited to, private activity bonds,
resource recovery bonds, certificates of participation and certain municipal
notes, are not backed by the credit and taxing authority of the issuer, and
are payable solely from the revenues derived from a particular facility or
class of facilities or, in some cases, from the proceeds of a special excise
or other specific revenue source. Nevertheless, the obligations of the issuer
of a revenue obligation may be backed by a letter of credit, guarantee or
insurance. General obligations and revenue obligations may be issued in a
variety of forms, including commercial paper, variable and floating rate
securities, tender option bonds, auction rate bonds, zero coupon, deferred
interest and capital appreciation bonds.
 
 
                                      11
<PAGE>
 
  MUNICIPAL LEASES AND CERTIFICATES OF PARTICIPATION. The Fund may invest in
municipal leases and certificates of participation in municipal leases. A
municipal lease is an obligation in the form of a lease or installment
purchase which is issued by a state or local government to acquire equipment
and facilities. Interest income from such obligations is generally exempt from
state and local taxes in the state of issuance. Municipal leases frequently
involve special risks not normally associated with general obligations or
revenue bonds. Leases and installment purchase or conditional sale contracts
(which normally provide for title to the leased asset to pass eventually to
the governmental issuer) have evolved as a means for governmental issuers to
acquire property and equipment without meeting the constitutional and
statutory requirements for the issuance of debt. The debt issuance limitations
are deemed to be inapplicable because of the inclusion in many leases or
contracts of "non-appropriation" clauses that relieve the governmental issuer
of any obligation to make future payments under the lease or contract unless
money is appropriated for such purpose by the appropriate legislative body on
a yearly or other periodic basis. In addition, such leases or contracts may be
subject to the temporary abatement of payments in the event the issuer is
prevented from maintaining occupancy of the leased premises or utilizing the
leased equipment. Although the obligations may be secured by the leased
equipment or facilities, the disposition of the property in the event of
nonappropriation or foreclosure might prove difficult, time consuming and
costly, and result in an unsatisfactory or delayed recoupment of the Fund's
original investment.
 
  Certificates of participation represent undivided interests in municipal
leases, installment purchase agreements or other instruments. The certificates
are typically issued by a trust or other entity which has received an
assignment of the payments to be made by the state or political subdivision
under such leases or installment purchase agreements.
 
  Certain municipal lease obligations and certificates of participation may be
deemed illiquid for the purpose of the Fund's 15% limitation on investments in
illiquid securities. Other municipal lease obligations and certificates of
participation acquired by the Fund may be determined by the Investment
Adviser, pursuant to guidelines adopted by the Trustees of the Trust, to be
liquid securities for the purpose of such limitation. In determining the
liquidity of municipal lease obligations and certificates of participation,
the Investment Adviser will consider a variety of factors including: (1) the
willingness of dealers to bid for the security; (2) the number of dealers
willing to purchase or sell the obligation and the number of other potential
buyers; (3) the frequency of trades or quotes for the obligation; and (4) the
nature of the marketplace trades. In addition, the Investment Adviser will
consider factors unique to particular lease obligations and certificates of
participation affecting the marketability thereof. These include the general
creditworthiness of the issuer, the importance of the property covered by the
lease to the issuer and the likelihood that the marketability of the
obligation will be maintained throughout the time the obligation is held by
the Fund.
 
  The Fund may also purchase participations in Municipal Securities held by a
commercial bank or other financial institution. Such participations provide
the Fund with the right to a pro rata undivided interest in the underlying
Municipal Securities. In addition, such participations generally provide the
Fund with the right to demand payment, on not more than seven days notice, of
all or any part of the Fund's participation interest in the underlying
Municipal Security, plus accrued interest. These demand features will be taken
into consideration in determining the effective maturity of such
participations and the average portfolio duration of the Fund. The Fund will
only invest in such participations if, in the
 
                                      12
<PAGE>
 
opinion of bond counsel for the issuers or counsel selected by the Investment
Adviser, the interest from such participations is exempt from regular federal
income tax.
 
  MUNICIPAL NOTES. The Fund may invest in municipal notes. Municipal
Securities in the form of notes generally are used to provide for short-term
capital needs in anticipation of an issuer's receipt of other revenues or
financing, and typically have maturities of up to three years. Such
instruments may include Tax Anticipation Notes, Revenue Anticipation Notes,
Bond Anticipation Notes, Tax and Revenue Anticipation Notes and Construction
Loan Notes. Tax Anticipation Notes are issued to finance the working capital
needs of governments. Generally, they are issued in anticipation of various
tax revenues, such as income, sales, property, use and business taxes, and are
payable from these specific future taxes. Revenue Anticipation Notes are
issued in expectation of receipt of other kinds of revenue, such as federal
revenues available under Federal Revenue Sharing programs. Bond Anticipation
Notes are issued to provide interim financing until long-term bond financing
can be arranged. In most cases, the long-term bonds then provide the funds
needed for repayment of the Notes. Tax and Revenue Anticipation Notes combine
the funding sources of both Tax Anticipation Notes and Revenue Anticipation
Notes. Construction Loan Notes are sold to provide construction financing.
These notes are secured by mortgage notes insured by the Federal Housing
Authority; however, the proceeds from the issuance may be less than the
economic equivalent of the payment of principal and interest on the mortgage
note if there has been a default. The obligations of an issuer of municipal
notes are generally secured by the anticipated revenues from taxes, grants or
bond financing. An investment in such instruments, however, presents a risk
that the anticipated revenues will not be received or that such revenues will
be insufficient to satisfy the issuer's payment obligations under the notes or
that refinancing will be otherwise unavailable.
 
  TAX-EXEMPT COMMERCIAL PAPER. The Fund may invest in tax-exempt commercial
paper. Commercial paper is a type of short-term, unsecured, negotiable
promissory note. These obligations are issued by state and local governments
and their agencies to finance working capital needs of municipalities or to
provide interim construction financing and are paid from general revenues of
municipalities or are refinanced with long-term debt. In most cases, tax-
exempt commercial paper is backed by letters of credit, lending agreements,
note repurchase agreements or other credit facility agreements offered by
banks or other institutions.
 
  PRE-REFUNDED MUNICIPAL SECURITIES. The Fund may invest in pre-refunded
Municipal Securities. The principal of and interest on pre-refunded Municipal
Securities are no longer paid from the original revenue source for such
securities. Instead, the source of such payments is typically an escrow fund
consisting of obligations issued or guaranteed by the U.S. Government, its
agencies or instrumentalities. The assets in the escrow fund are derived from
the proceeds of refunding bonds issued by the same issuer as the pre-refunded
Municipal Securities, but usually on terms more favorable to the issuer.
Issuers of Municipal Securities use this advance refunding technique to obtain
more favorable terms with respect to Municipal Securities that are not yet
subject to call or redemption by the issuer. For example, advance refunding
enables an issuer to refinance debt at lower market interest rates,
restructure debt to improve cash flow or eliminate restrictive covenants in
the indenture or other governing instrument for the pre-refunded Municipal
Securities. However, except for a change in the revenue source from which
principal and interest payments are made, the pre-refunded Municipal
Securities remain outstanding on their original terms until they mature or are
redeemed by
 
                                      13
<PAGE>
 
the issuer. The effective maturity of pre-refunded Municipal Securities will
be the redemption date if the issuer has assumed an obligation or indicated
its intention to redeem such securities on the redemption date. Pre-refunded
Municipal Securities are usually purchased at a price which represents a
premium over their face value.
 
  VARIABLE AND FLOATING RATE SECURITIES. The interest rates payable on certain
securities in which the Fund may invest, which generally are expected to be
revenue obligations, are not fixed and may fluctuate based upon changes in
market rates. A variable rate obligation has an interest rate which is
adjusted at predesignated periods in response to changes in the market rate of
interest on which the obligation's interest rate is based. Unlike fixed rate
instruments, variable and floating rate obligations do not lock in a
particular yield in a changing interest rate environment. Nevertheless, such
obligations may fluctuate in value in response to interest rate changes if a
change in market interest rates does not coincide with the interest reset date
for an obligation. Variable or floating rate obligations generally permit the
holders of such obligations to demand payment of principal from the issuer or
a third party at any time or at stated intervals. The Fund will take demand
features into consideration in determining the average portfolio duration of
the Fund and the effective maturity of individual Municipal Securities. In
addition, the absence of an unconditional demand feature exercisable within
seven days, and the failure of the issuer or a third party to honor its
obligations under a demand or put feature will require a variable or floating
rate obligation to be treated as illiquid for purposes of the Fund's 15%
limitation on illiquid investments.
 
  TENDER OPTION BONDS. The Fund may invest in tender option bonds. A tender
option bond is a Municipal Security (generally held pursuant to a custodial
arrangement) having a relatively long maturity and bearing interest at a fixed
rate substantially higher than prevailing short-term tax-exempt rates. The
bond is typically issued in conjunction with the agreement of a third party,
such as a bank, broker-dealer or other financial institution which grants the
security holders the option, at periodic intervals, to tender their securities
to the institution and receive the face value thereof. As consideration for
providing the option, the financial institution receives periodic fees equal
to the difference between the bond's fixed coupon rate and the rate, as
determined by a remarketing or similar agent at or near the commencement of
such period, that would cause the securities, coupled with the tender option,
to trade at par on the date of such determination. Thus, after payment of this
fee, the security holder effectively holds a demand obligation that bears
interest at the prevailing short-term tax-exempt rate. However, an institution
will not be obligated to accept tendered bonds in the event of certain
defaults or a significant downgrading in the credit rating assigned to the
issuer of the bond. Although the Fund intends to invest in tender option bonds
the interest on which will, in the opinion of bond counsel for the issuer of
interests therein or counsel selected by the Investment Adviser, be exempt
from regular federal income tax, there is a risk that the Fund will not be
considered the owner of such tender option bonds and thus will not be entitled
to treat such interest as exempt from such tax.
 
  AUCTION RATE SECURITIES. The Fund may invest in auction rate securities.
Provided that the auction mechanism is successful, auction rate securities
permit the holder to sell the securities in an auction at par value at
specified intervals. The dividend or interest rate is reset by "Dutch" auction
in which bids are made by broker-dealers and other institutions for a certain
amount of securities at a specified minimum yield. The rate set by the auction
is the lowest interest or dividend rate that covers all
 
                                      14
<PAGE>
 
securities offered for sale. While this process is designed to permit auction
rate securities to be traded at par value, there is the risk that an auction
will fail due to insufficient demand for the securities. The Fund will take
the next scheduled auction date of auction rate securities into consideration
in determining the average portfolio maturity of the Fund.
 
  ZERO COUPON, DEFERRED INTEREST AND CAPITAL APPRECIATION BONDS. The Fund may
invest in zero coupon, deferred interest and capital appreciation bonds. Zero
coupon, deferred interest and capital appreciation bonds are debt securities
issued or sold at a discount from their face value that do not entitle the
holder to any payment of interest prior to maturity or a specified
commencement or redemption date (or cash payment date). The amount of the
discount varies depending on the time remaining until maturity or cash payment
date, prevailing interest rates, the liquidity of the security and the
perceived credit quality of the issuer. These securities also may take the
form of debt securities that have been stripped of their unmatured interest
coupons, the coupons themselves or receipts or certificates representing
interests in such stripped debt obligations or coupons. A portion of the
discount with respect to stripped tax-exempt securities or their coupons may
be taxable. The market prices of zero coupon, deferred interest and capital
appreciation bonds generally are more volatile than the market prices of
interest-bearing securities and are likely to respond to a greater degree to
changes in interest rates than interest-bearing securities having similar
maturities and credit quality. The Fund's investments in zero coupon, deferred
interest and capital appreciation bonds or stripped securities may require the
Fund to sell certain of its portfolio securities to generate sufficient cash
to satisfy certain income distribution requirements. See "Taxation" in the
Additional Statement.
 
  INSURED BONDS. The Fund may invest in "insured" Municipal Securities.
Insured Municipal Securities are those for which scheduled payments of
interest and principal are guaranteed by a private (nongovernmental) insurance
company. The insurance only entitles the Fund to receive the face or par value
of the securities held by the Fund. The insurance does not guarantee the
market value of the Municipal Securities or the value of the shares of the
Fund.
 
  INVERSE FLOATING RATE INSTRUMENTS. The Fund may invest in "leveraged"
inverse floating rate debt instruments ("inverse floaters"). Investments in
inverse floaters will not exceed 25% of the Fund's net assets. The interest
rate on an inverse floater resets in the opposite direction from the market
rate of interest to which the inverse floater is indexed. An inverse floater
may be considered to be leveraged to the extent that its interest rate varies
by a magnitude that exceeds the magnitude of the change in the index rate of
interest. The higher the degree of leverage of an inverse floater the greater
the volatility of its market value.
 
                        OTHER INVESTMENTS AND PRACTICES
 
  WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase
securities on a when-issued basis. When-issued transactions arise when
securities are purchased by the Fund with payment and delivery taking place in
the future in order to secure what is considered to be an advantageous price
and yield to the Fund at the time of entering into the transaction. The Fund
may also purchase securities on a forward commitment basis. In a forward
commitment transaction, the Fund contracts to purchase securities for a fixed
price at a future date beyond the customary settlement time. The Fund is
required to hold and maintain in a segregated account until the settlement
date, cash or liquid, high-grade debt obligations in an amount sufficient to
meet the purchase price.
 
                                      15
<PAGE>
 
Alternatively, the Fund may enter into offsetting contracts for the forward
sale of other securities that it owns. The purchase of securities on a when-
issued or forward commitment basis involves a risk of loss if the value of the
security to be purchased declines prior to the settlement date. Although the
Fund will generally purchase securities on a when-issued or forward commitment
basis with the intention of actually acquiring securities for its portfolio,
the Fund may dispose of a when-issued security or forward commitment prior to
settlement if the Investment Adviser deems it appropriate to do so.
 
  REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with
dealers in U.S. Government securities and member banks of the Federal Reserve
System which furnish collateral at least equal in value or market price to the
amount of their repurchase obligation. In a repurchase agreement, the Fund
purchases a debt security from a seller which undertakes to repurchase the
security at a specified resale price on an agreed future date (ordinarily a
week or less). The resale price generally exceeds the purchase price by an
amount which reflects an agreed-upon market interest rate for the term of the
repurchase agreement. The primary risk is that, if the seller defaults, the
Fund might suffer a loss to the extent that the proceeds from the sale of the
underlying securities and other collateral held by the Fund in connection with
the related repurchase agreement are less than the repurchase price.
Repurchase agreements maturing in more than seven days are considered by the
Fund to be illiquid. In addition, the Fund, together with other registered
investment companies having advisory agreements with the Investment Adviser or
any of its affiliates, may transfer uninvested cash balances into a single
joint account, the daily aggregate balance of which will be invested in one or
more repurchase agreements.
 
  ILLIQUID SECURITIES. The Fund will not invest more than 15% of the value of
its net assets in securities which are illiquid, including repurchase
agreements providing for settlement in more than seven days after notice,
interest rate swaps, caps, floors and collars, certain over-the-counter
options, certain municipal leases and participations in Municipal Securities
which do not include a right to demand payment of the Fund's interest in the
underlying Municipal Securities and securities offered in the United States
that are restricted as to resale. However, a restricted security is not
considered to be illiquid if the Trustees of the Trust determine, based upon
the Investment Adviser's continuing review of the trading markets for the
specific restricted security under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale in accordance with Rule 144A
under the Securities Act of 1933 is liquid. In addition, a repurchase
agreement which by its terms can be liquidated before its nominal fixed term
on seven days or less notice is regarded as a liquid instrument. Subject to
the limitations described above, the Fund may acquire Municipal Securities or
illiquid securities in a private placement.
 
  Since it is not possible to predict with assurance exactly how this market
for restricted securities sold and offered under Rule 144A will develop, the
Board of Trustees will carefully monitor the Fund's investment in these
securities, focusing on such important factors, among others, as valuation,
credit quality, liquidity and availability of information. This investment
practice could have the effect of increasing the level of illiquidity in the
Fund to the extent that qualified institutional buyers become for a time
uninterested in purchasing these restricted securities.
 
                                      16
<PAGE>
 
INTEREST RATE SWAPS, CAPS, FLOORS AND COLLARS
 
  The Fund may enter into interest rate swaps for hedging purposes and to
increase total return. The Fund may also enter into other types of interest
rate swap agreements such as caps, floors and collars. Interest rate swaps
involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, such as an exchange of fixed rate
payments for floating rate payments. The purchase of an interest rate cap
entitles the purchaser, to the extent that a specified index exceeds a
predetermined interest rate, to receive payment of interest on a notional
principal amount from the party selling such interest rate cap. The purchase
of an interest rate floor entitles the purchaser, to the extent that a
specified index falls below a predetermined interest rate, to receive payments
of interest on a notional principal amount from the party selling the interest
rate floor. An interest rate collar is the combination of a cap and a floor
that preserves a certain return within a predetermined range of interest
rates. Since interest rate swaps, caps, floors and collars are individually
negotiated, the Fund expects to achieve an acceptable degree of correlation
between its portfolio investments and its swap, cap, floor or collar positions
entered into for hedging purposes.
 
  The Fund will enter into interest rate swaps only on a net basis, which
means that the two payment streams are netted out, with the Fund receiving or
paying, as the case may be, only the net amount of the two payments. The Fund
will maintain in a segregated account with the Fund's custodian cash and
liquid, high grade debt securities equal to the net amount, if any, of the
excess of the Fund's obligations over its entitlements with respect to swap
transactions. Interest rate swaps do not involve the delivery of securities,
other underlying assets or principal. Accordingly, the risk of loss with
respect to interest rate swaps is limited to the net amount of interest
payments that the Fund is contractually obligated to make. If the other party
to an interest rate swap defaults, the Fund's risk of loss consists of the net
amount of interest payments that the Fund is contractually entitled to
receive. To the extent that the net amount of an interest rate swap is held in
a segregated account consisting of cash and liquid, high grade debt
securities, the Fund and the Investment Adviser believe that interest rate
swaps do not constitute senior securities under the Investment Company Act of
1940, as amended (the "Act") and, accordingly, will not treat them as being
subject to the Fund's borrowing restriction.
 
  The Fund will not enter into any interest rate swap, cap, floor or collar
transactions unless the unsecured commercial paper, senior debt or claims
paying ability of the other party is rated either AA or A-1 or better by
Standard & Poor's or Aa or P-1 or better by Moody's or, if unrated by such
rating organizations, determined to be of comparable quality by the Investment
Adviser.
 
  The use of interest rate swaps, caps, floors and collars is a highly
specialized activity which involves investment techniques and risks different
from those associated with ordinary portfolio securities transactions. If the
Investment Adviser is incorrect in its forecasts of market values and interest
rates, the investment performance of the Fund would be less favorable than it
would have been if these investment techniques were not used. The staff of the
SEC currently takes the position that swaps, caps, floors and collars are
illiquid and thus subject to the Fund's 15% limitation on illiquid securities.
 
OPTIONS ON SECURITIES AND SECURITIES INDICES
 
  WRITING COVERED OPTIONS. The Fund may write (sell) covered call and put
options on any securities in which it may invest. All call options written by
the Fund are covered, which means that the
 
                                      17
<PAGE>
 
Fund will own the securities subject to the option so long as the option is
outstanding. All put options written by the Fund are covered, which means that
the Fund would have deposited with its custodian cash and liquid, high grade
debt securities with a value equal to the exercise price of the put option.
Call and put options written by the Fund will also be considered to be covered
to the extent that the Fund's liabilities under such options are wholly or
partially offset by its rights under call and put options purchased by the
Fund. The Fund may also write call and put options on a securities index
composed of securities in which it may invest. In addition, the Fund may
purchase put and call options on any securities in which it may invest or
options on any securities index composed of securities in which it may invest.
 
  The writing and purchase of options is a highly specialized activity which
involves investment techniques and risks different from those associated with
ordinary portfolio securities transactions. The use of options to increase
total return involves the risk of loss if the Investment Adviser is incorrect
in its expectation of fluctuations in securities prices or interest rates. The
successful use of puts for hedging purposes depends in part on the ability of
the Investment Adviser to predict future price fluctuations and the degree of
correlation between the options and securities markets. If the Investment
Adviser is incorrect in its determination of the correlation between the
securities or indices on which the options are written and purchased and the
securities in the Fund's investment portfolio, the investment performance of
the Fund will be less favorable than it would have been in the absence of such
option transactions. The writing of options could significantly increase the
Fund's portfolio turnover rate and, therefore, associated brokerage
commissions or spreads.
 
  FUTURES CONTRACTS AND RELATED OPTIONS. To hedge against changes in interest
rates or securities prices or to seek to increase total return, the Fund may
purchase and sell various kinds of futures contracts and purchase and write
call and put options on any of such futures contracts. The Fund may also enter
into closing purchase and sale transactions with respect to any of such
contracts and options. The futures contracts may be based on various
securities (such as U.S. Government securities), securities indices and other
financial instrument and indices. The Fund will engage in futures or related
option transactions only for bona fide hedging purposes as defined in
regulations of the Commodity Futures Trading Commission or to seek to increase
total return to the extent permitted by such regulations.
 
  The Fund may not purchase or sell futures contracts or purchase or sell
related options to increase total return, except for closing purchase or sale
transactions, if immediately thereafter the sum of the amount of initial
margin deposits and premiums paid on the Fund's outstanding positions in
futures and related options entered into for the purpose of seeking to
increase total return would exceed 5% of the market value of the Fund's net
assets. Transactions in futures contracts and options on futures involve
brokerage costs, require margin deposits and, in the case of contracts and
options obligating the Fund to purchase securities, require the Fund to
segregate cash and liquid, high grade debt securities with a value equal to
the amount of the Fund's obligations.
 
  While transactions in futures contracts and options on futures may reduce
certain risks, such transactions themselves entail certain other risks. See
"Investment Objectives and Policies -- Futures Contracts and Related Options"
in the Additional Statement. Thus, while the Fund may benefit from the use of
futures and options on futures, unanticipated changes in interest rates may
result in a poorer overall performance for the Fund than if it had not entered
into any futures contracts or options
 
                                      18
<PAGE>
 
transactions. The loss incurred by the Fund in writing options on futures is
potentially unlimited and may exceed the amount of the premium received.
 
  The use of futures may increase the volatility of the Fund's net asset
value. The profitability of the Fund's trading in futures to increase total
return will depend on the Investment Adviser's ability to correctly analyze
the futures markets. In addition, because of the low margin deposits normally
required in futures trading, a relatively small price movement in a futures
contract may result in substantial losses to the Fund. Further, futures
trading may be illiquid, and exchanges may limit fluctuations in futures
contract prices during a single day.
 
  In the event of an imperfect correlation between a futures position and a
portfolio position which is intended to be protected, the desired protection
may not be obtained and the Fund may be exposed to risk of loss. Perfect
correlation between the Fund's futures positions and portfolio positions will
be impossible to achieve. The Fund's transactions in options and futures
contracts may be limited by the requirements of the Code for qualification as
a regulated investment company.
 
  LENDING OF PORTFOLIO SECURITIES. The Fund may also seek to increase its
income by lending portfolio securities. Under present regulatory policies,
such loans may be made to institutions, such as certain broker-dealers, and
are required to be secured continuously by collateral in cash, cash
equivalents or U.S. Government securities maintained on a current basis in an
amount at least equal to the market value of the securities loaned. Cash
collateral may be invested in cash equivalents. If the Investment Adviser
determines to make securities loans, the value of the securities loaned may
not exceed 33 1/3% of the value of the total assets of the Fund. See
"Investment Restrictions" in the Additional Statement. The Fund may experience
a loss or delay in the recovery of its securities if the institution with
which it has engaged in a portfolio loan transaction breaches its agreement
with the Fund.
 
  OTHER INVESTMENT COMPANIES. The Fund reserves the right to invest up to 10%
of its total assets, calculated at the time of purchase, in the securities of
other investment companies including business development companies and small
business investment companies. The Fund may not invest more than 5% of its
total assets in the securities of any one investment company or acquire more
than 3% of the voting securities of any other investment company. Pursuant to
an exemptive order obtained from the SEC, other investment companies in which
the Fund may invest include money market funds for which the Investment
Adviser or any of its affiliates serves as investment adviser. The Fund will
indirectly bear its proportionate share of any management fees and other
expenses paid by investment companies in which it invests in addition to the
advisory fees paid by the Fund. However, to the extent that the Fund invests
in a money market fund for which the Investment Adviser or any of its
affiliates acts as adviser, the advisory fees payable by the Fund to the
Investment Adviser will be reduced by an amount equal to the Fund's
proportionate share of the advisory fees paid by such money market fund to the
Investment Adviser or any of its affiliates.
 
                                 RISK FACTORS
 
  An investment in the Fund presents certain risk factors, in addition to
those described above, including the following:
 
  NET ASSET VALUE VOLATILITY. The net asset value of the Fund's shares will
change with changes in the value of its portfolio securities. Because, under
normal market conditions, the Fund invests
 
                                      19
<PAGE>
 
primarily in fixed income Municipal Securities, the net asset value of the
shares of the Fund can be expected to change as general levels of interest
rates fluctuate. Volatility may be greater during periods of general economic
uncertainty and interest rate fluctuation. The volatility of Municipal
Securities may differ from that of other fixed income securities.
 
  YIELDS AND MARKET VALUES OF MUNICIPAL SECURITIES. The yields and market
values of Municipal Securities are determined primarily by the general level
of interest rates, the supply of and demand for Municipal Securities, the
creditworthiness of the issuers of Municipal Securities and economic and
political conditions affecting such issuers. Due to their tax-exempt status,
the yields and market values of Municipal Securities may be adversely affected
by certain factors, such as changes in tax rates and policies, which may have
less of an effect on the taxable fixed income markets. In addition, the yields
of short or intermediate term Municipal Securities are generally more volatile
than the yields of longer term Municipal Securities. Moreover, certain types
of Municipal Securities, such as housing revenue bonds, which are based on
mortgage revenues, involve prepayment risks which could affect the yields of
such Municipal Securities.
 
  When interest rates decline, the value of a portfolio of Municipal
Securities (with the exception of variable and floating rate securities) can
be expected to rise. Conversely, when interest rates rise, the value of a
portfolio of Municipal Securities can be expected to decline. In general, the
yields on short and intermediate term Municipal Securities are lower than the
yields on long term Municipal Securities. Because of the shorter maturities of
short and intermediate term Municipal Securities, however, the market values
of such Municipal Securities can be expected to fluctuate to a lesser extent
as a result of changes in interest rates. Nevertheless, a sudden and extreme
increase in interest rates may cause a decline in the Fund's net asset value,
while a sudden and extreme decline in interest rates could result in an
increase in the Fund's net asset value.
 
  The ability of the Fund to achieve its investment objective will therefore
depend in part on the extent to which the Fund is able to anticipate and
respond to fluctuations in market interest rates and to utilize appropriate
strategies to maximize returns to the Fund, while attempting to minimize the
associated risks to its invested capital. While short or intermediate term
Municipal Securities are generally less susceptible to fluctuations in value
as a result of changes in interest rates (as compared to longer term Municipal
Securities), certain types of instruments in which the Fund will invest, such
as zero coupon bonds, deferred interest and capital appreciation bonds, are
more susceptible to fluctuations as a result of movements in interest rates.
As a result, a sudden and extreme rise in interest rates could result in a
substantial decline in the value of such portfolio securities. The ability of
the Fund to achieve, in accordance with its investment objective, relatively
low volatility of principal therefore depends in part on the extent to which
the Fund is able to anticipate and respond to fluctuations in market interest
rates and to utilize appropriate strategies to maximize returns to the Fund.
 
  DEFAULT RISK. Investments in Municipal Securities, including both general
obligations and revenue obligations, are subject to the risk that the issuer
could default on its obligations, and the Fund could sustain losses on such
investments. Such a default could result from the inadequacy of the sources or
revenues from which interest and principal payments are to be made or the
assets collateralizing such obligations. Revenue obligations, including
private activity bonds, municipal leases,
 
                                      20
<PAGE>
 
certificates of participation and certain other types of instruments in which
the Fund may invest, are backed only by specific assets or revenue sources and
not by the full faith and credit of the governmental issuer.
 
  TAX CONSEQUENCES. While the Fund will, under normal market conditions,
invest substantially all of its assets in Municipal Securities, the
recognition of accrued market discount income (if the Fund acquires Municipal
Securities or other obligations at a market discount) and income and/or
capital gains from certain types of instruments in which the Fund is permitted
to invest, including U.S. Government securities, options and futures
contracts, interest rate swaps, caps, floors and collars, securities loans,
the disposition of when-issued securities or forward commitments prior to
settlement and repurchase agreements, will result in taxable income,
distributions of which will be taxable to shareholders. In addition, the
Fund's investments in private activity bonds subject to the federal
alternative minimum tax could result in income the distribution of which could
cause or increase alternative minimum tax liability for some shareholders. The
Fund may also generate capital gains from the disposition of its investments
and its distributions of such capital gains will be taxable to shareholders.
Shareholders may be subject to state, local or foreign taxes on certain income
received from the Fund. See "Taxation."
 
  Because interest income from Municipal Securities is not subject to regular
federal income taxation, the attractiveness of Municipal Securities in
relation to other investment alternatives will be affected by any changes in
federal income tax rates applicable to, or the continuing federal income tax-
exempt status of, such interest income. Any proposed or actual changes in such
rates or exempt status, therefore, can significantly affect both the supply of
and demand for Municipal Securities, which could in turn affect the Fund's
ability to acquire and dispose of Municipal Securities at desirable yield and
price levels.
 
  CALL RISK AND REINVESTMENT RISK. The Municipal Securities in which the Fund
will invest may include "call" provisions which permit the issuers of such
securities, at any time or after a specified period, to redeem the securities
prior to their stated maturity. In the event that Municipal Securities held in
the Fund's portfolio are called prior to maturity, the Fund will be required
to reinvest the proceeds received on such securities at an earlier date and
may be able to do so only at lower yields, thereby reducing the Fund's return
on its portfolio securities. There is a risk that the proceeds of housing
revenue bonds will be in excess of demand for mortgages which would result in
early retirement of the bonds by the issuer. Moreover, such housing revenue
bonds depend for their repayment upon the cash flow from the underlying
mortgages, which cannot be precisely predicted when the bonds are issued. Any
difference in the actual cash flow from such mortgages from the assumed cash
flow could have an adverse impact upon the ability of the issuer to make
scheduled payments of principal and interest on the bonds, or could result in
early retirement of the bonds.
 
  COUNTERPARTY CREDIT RISK. When the Fund enters into certain transactions,
including repurchase agreements, stand-by commitments (described in the
Additional Statement), over-the-counter options, interest rate swaps, caps,
floors and collars and securities lending transactions, it assumes the risk
that its counterparty will default on its obligations to the Fund, which could
result in losses.
 
  RISKS OF DERIVATIVE TRANSACTIONS. The Fund's transactions in interest rate
swaps, caps, floors and collars, futures and options, involve certain risks,
including a possible lack of correlation between
 
                                      21
<PAGE>
 
changes in the value of the hedging instruments and the portfolio assets being
hedged, the potential illiquidity of the markets for derivative instruments
and the risks arising from the margin requirements and related leverage
factors associated with such transactions. The use of these management
techniques to seek to increase total return also involves the risk of loss if
the Investment Adviser is incorrect in its expectation of fluctuations in
securities prices and interest rates.
 
                            INVESTMENT RESTRICTIONS
 
  The Fund is subject to certain investment restrictions which, as described
in more detail in the Additional Statement, are fundamental policies that
cannot be changed without the approval of a majority of the outstanding shares
of the Fund. Among other restrictions, the Fund may not, with respect to 75%
of its total assets, purchase securities of any one issuer (other than
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities) if more than 5% of its total assets would be invested in
such issuer. Less than 25% of the Fund's total assets may be invested in the
securities of issuers in any one industry. For the purposes of this
restriction, state and municipal governments and their agencies and
instrumentalities are not deemed to be industries with respect to tax-exempt
securities of these issuers. Thus, the Fund may invest 25% or more of the
value of its total assets in Municipal Securities which are related in such a
way that an economic, business or political development or change affecting
one Municipal Security would also affect the other Municipal Securities. For
example, the Fund may so invest in (a) Municipal Securities the interest on
which is paid solely from revenues of similar projects such as hospitals,
electric utility systems, multi-family housing, nursing homes, commercial
facilities (including hotels), steel companies or life care facilities, (b)
Municipal Securities whose issuers are in the same state, or (c) industrial
development obligations. The Fund may not borrow money, except from banks for
temporary or short-term purposes, in connection with redemptions and failed
settlements and to finance certain additional purchases of securities,
provided that the Fund maintains asset coverage of 300% for all such
borrowings. As a matter of non-fundamental policy, the Fund may not purchase
securities while such borrowings exceeds 5% of the value of the Fund's total
assets.
 
                              PORTFOLIO TURNOVER
 
  The Fund may engage in active short-term trading to benefit from yield
disparities among different issues of Municipal Securities, to seek short-term
profits during periods of fluctuating interest rates or for other reasons.
Such trading will increase the Fund's portfolio turnover rate and may
therefore increase the incidence of short-term capital gain (distributions of
which are taxable to shareholders as ordinary income). A high rate of
portfolio turnover (100% or higher) involves correspondingly greater expenses
which must be borne by the Fund and its shareholders and may under certain
circumstances make it more difficult for the Fund to qualify as a regulated
investment company under the Internal Revenue Code. The portfolio turnover
rate is calculated by dividing the lesser of the dollar amount of sales or
purchases of portfolio securities by the average monthly value of the Fund's
portfolio securities, excluding securities having a maturity at the date of
purchase of one year or less.
 
                                  MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct
 
                                      22
<PAGE>
 
and supervise the Fund's daily business operations. The Additional Statement
contains information as to the identity of, and other information about, the
Trustees and officers of the Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Asset Management, One New York Plaza, New York, New York
10004, a separate operating division of Goldman Sachs, acts as the investment
adviser of the Fund. Goldman Sachs was registered as an investment adviser in
1981. As of January 31, 1995, the Investment Adviser, together with its
affiliates, acted as investment adviser, administrator or distributor for
approximately $48.7 billion in assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Asset
Management, subject to the general supervision of the Board of Trustees,
manages the Fund's portfolio and provides for the administration of all of the
Fund's other affairs. It is the responsibility of the Investment Adviser to
make investment decisions for the Fund and to place purchase and sale orders
for the Fund's portfolio transactions. Such orders may be directed to any
broker including, to the extent and in the manner permitted by applicable law,
Goldman Sachs or its affiliates. Goldman Sachs has agreed to permit the Fund
to use the name "Goldman Sachs" or a derivative thereof as part of the Fund's
name for as long as the Investment Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Mark Muller and Theodore T. Sotir. Mr.
Muller joined Goldman Sachs Asset Management in 1991 and is currently a Vice
President. Prior to 1991, he was a senior portfolio manager for Van Kampen
Meritt Investment Advisory Corporation, where he was responsible for actively
managing a wide variety of municipal securities portfolios. Mr. Sotir helps
with overall portfolio strategy and is a member of the Investment Adviser's
risk control team. Mr. Sotir is a Vice President of Goldman Sachs and joined
Goldman Sachs Asset Management in 1993 after working as a portfolio manager at
Fidelity Management Trust Company. Prior to joining Fidelity, Mr. Sotir worked
for Goldman Sachs in the mortgage securities department for six years.
 
  As compensation for the services rendered to the Fund by the Investment
Adviser pursuant to the Investment Advisory Agreement, and the assumption by
the Investment Adviser of the expenses related thereto, the Fund pays the
Investment Adviser a fee, computed daily and payable monthly, at an annual
rate equal to 0.40% of the Fund's average daily net assets. For the fiscal
year ended October 31, 1994, the Fund paid an advisory fee to the Investment
Adviser equal on an annual basis to 0.40% of the Fund's average daily net
assets.
 
  The Investment Adviser has voluntarily agreed to reduce or otherwise limit
certain expenses of the Fund (excluding advisory fees, payments to Service
Organizations (as defined below), taxes, interest and brokerage and
litigation, indemnification and other extraordinary expenses) to the extent
such expenses exceed 0.05% annually of the Fund's average net assets. Such
reductions or limits, if any, are calculated monthly on a cumulative basis and
may be discontinued or modified by the Investment Adviser at its discretion at
any time. The Investment Adviser has also agreed to reduce its fees payable
(to the extent of such fees) by the amount the Fund's expenses would, absent
the fee reduction, exceed the applicable expense limitations imposed by state
securities administrators. See "Management -- Expenses" in the Additional
Statement.
 
                                      23
<PAGE>
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser and Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts
and other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have Investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities, and instruments
as the Fund. Goldman Sachs and its affiliates will not have any obligation to
make available any information regarding their proprietary activities or
strategies, or the activities or strategies used for other accounts managed by
them, for the benefit of the management of the Fund and it is not anticipated
that the Investment Adviser will have access to proprietary information for
the purpose of managing the Fund. The results of the Fund's investment
activities, therefore, may differ from those of Goldman Sachs and its
affiliates and it is possible that the Fund could sustain losses during
periods in which Goldman Sachs and its affiliates and other accounts achieve
significant profits on their trading for proprietary or other accounts. From
time to time, the Fund's activities may be limited because of regulatory
restrictions applicable to Goldman Sachs and its affiliates, and/or their
internal policies designed to comply with such restrictions. See "Activities
of Goldman Sachs and its Affiliates and Other Accounts Managed by Goldman
Sachs" in the Additional Statement for further information.
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact
Goldman Sachs as Transfer Agent at the address or the telephone number set
forth on the inside front cover page of this Prospectus.
 
                                   DIVIDENDS
 
  The Fund intends to declare a daily dividend determined with the objective
of distributing the majority of net investment income while enhancing the
stability of principal. Such dividend will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially
all of the Fund's net investment income. From time to time a portion of such
dividends may constitute an economic return of capital, a portion of which may
nevertheless be taxable as ordinary income. The Fund also intends that all net
realized long-term and short-term capital gains will be declared as a dividend
at least annually. In determining amounts of capital gains to be distributed,
capital losses including any available capital loss carryovers from prior
years will be offset against capital gains realized.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination
is made as of 3:00 p.m. Chicago time.
 
 
                                      24
<PAGE>
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case
payment will be made on the first Business Day of the succeeding month.
Payment of dividends with respect to capital gains, if any, when declared will
be made in additional shares of the Fund at the net asset value on the payment
date, unless cash distributions are elected. This election to receive
dividends in cash is initially made on the Account Information Form and may be
changed upon written notice to the Transfer Agent at any time prior to the
record date for a particular dividend or distribution. If cash dividends are
elected with respect to the Fund's monthly net investment income dividends,
then cash dividends must also be elected with respect to the non-long term
capital gains component, if any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or unrealized appreciation of the Fund's portfolio securities. Therefore,
subsequent distributions (or portions thereof) of taxable income or realized
appreciation on such shares may be taxable to the investor even if the net
asset value of the shares is, as a result of the distributions, reduced below
the cost of such shares and the distributions (or portions thereof) represent
a return of a portion of the purchase price.
 
                                NET ASSET VALUE
 
  The net asset value per share is calculated by the Fund's custodian as of
the close of regular trading on the New York Stock Exchange (normally 3:00
p.m. Chicago time, 4:00 p.m. New York time), immediately after determination
of the income to be declared as a dividend on each Business Day (as such term
is defined under "Additional Information"). Net asset value per share of each
class is calculated by determining the net assets attributable to each class
and dividing by the number of outstanding shares of that class.
 
  Portfolio securities are valued based on market quotations or, if accurate
quotations are not readily available, at fair value as determined in good
faith under procedures established by the Trust's Board of Trustees.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish yield, tax equivalent yield and
average annual total return in advertisements and communications to
shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
  Tax equivalent yield represents the yield an investor would have to earn to
equal, after taxes, the Fund's tax-free yield. Tax equivalent yield is
calculated by dividing the Fund's tax-exempt yield by one minus a stated
federal and/or state tax rate.
 
 
                                      25
<PAGE>
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most
recent calendar quarter, assuming reinvestment of all dividends and
distributions at net asset value. The total return calculation assumes a
complete redemption of the investment at the end of the relevant period. The
Fund may also from time to time advertise total return on a cumulative,
average, year-by-year or other basis for various specified periods by means of
quotations, charts, graphs or schedules. In addition to the above, the Fund
may from time to time advertise its performance relative to certain
performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value for the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided
in shareholder reports, the Fund may, in its discretion, from time to time
make a list of its holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of shares in existence. Because each class of shares may be subject
to different expenses, the yield, total return and distribution rate
calculations with respect to each class of shares of the Fund for the same
period will differ. Due to the fees payable under the Service Plan and the
Administration Plan, the investment performance, for any period, of the
Institutional Shares will always be higher than that of the Service Shares and
the Administration Shares and the investment performance of the Administration
Shares will always be higher than that of the Service Shares. See "Shares of
the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement the Trustees are
authorized to issue an unlimited number of shares of beneficial interest,
$.001 par value per share. The Trustees of the Trust are responsible for the
overall management and supervision of its affairs. The Trustees of the Trust
have authority under the Trust Agreement to create and classify shares of
beneficial interest in separate series, without further action by
shareholders. As of the date of this Prospectus, the Trustees have authorized
shares of the Fund and ten other series. Additional series may be added in the
future. The Trustees also have authority to classify or reclassify any series
or portfolio of shares into one or more classes. Pursuant thereto, the
Trustees have authorized the issuance of three classes of the Fund. These
classes are: Institutional Shares, Administration Shares and Service Shares.
 
  Each Institutional Share, Administration Share and Service Share of the Fund
represents an equal proportionate interest in the assets belonging to the
Fund. All Fund expenses are based on a percentage of the Fund's aggregate
average net assets, except that the respective account administration and
service fees relating to a particular class will be borne exclusively by that
class. It is contemplated that most Administration Shares and Service Shares
will be held in accounts of which
 
                                      26
<PAGE>
 
the record owner is a bank or other institution acting, directly or through an
agent, as nominee for its customers who are the beneficial owners of the
shares or another organization designated by such bank or institution.
Administration Shares and Service Shares will each be marketed only to such
institutional investors, at net asset value with no sales load. Institutional
Shares may be purchased for accounts in the name of an investor or institution
that is not compensated by the Fund for services provided to the institution's
customers. Administration Shares may be purchased for accounts held in the
name of an institution that provides certain account administration services
to its customers, including maintenance of account records and processing
orders to purchase, redeem or exchange Administration Shares. Administration
Shares bear the cost of account administration fees at the annual rate of up
to 0.25% of the average daily net assets of such Administration Shares.
Service Shares may be purchased for accounts held in the name of an
institution that provides certain account administration and shareholder
liaison services to its customers, including maintenance of account records
and processing orders to purchase, redeem or exchange Service Shares,
responding to customer inquiries and assisting customers with investment
procedures. Service Shares bear the cost of service fees at the annual rate of
up to 0.50% of the average daily net assets of such Service Shares.
(Institutions that provide services to holders of Administration or Service
Shares are referred to in this Prospectus as "Service Organizations").
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration and Service Shares) to
its customers and thus receive different compensation with respect to
different classes of shares of the Fund. Administration Shares and Service
Shares may each have certain exclusive voting rights on matters relating to
their respective plans. Shares of each class may be exchanged only for shares
of the same class in another fund and certain money market funds sponsored by
Goldman Sachs. The Fund may amend such policy in the future. Dividends paid by
the Fund, if any, with respect to each class of shares will be calculated in
the same manner, at the same time and on the same day and will be in the same
amount, except for differences caused by the fact that the respective account
administration and service fees relating to a particular class will be borne
exclusively by that class. Similarly, the net asset value per share will vary
depending on the class of shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or appraisal rights.
 
  As of February 17, 1995, MGIC, Attn: James A. McGinnis, P.O. Box 297,
Milwaukee, WI 53201 owned beneficially and of record (28.85%) of the Fund.
 
  Under Massachusetts law, there is a remote possibility that shareholders of
a business trust could, under certain circumstances, be held personally liable
as partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
                                      27
<PAGE>
 
  Unless otherwise required by the Act, ordinarily it will not be necessary
for the Trust to hold annual meetings of shareholders. As a result,
shareholders may not consider each year the election of Trustees or the
appointment of independent accountants. Shareholders may remove a Trustee by
the affirmative vote of at least two-thirds of the Trust's outstanding shares
and the Trustees must promptly call a meeting for such purpose when requested
to do so in writing by the record holders of not less than 10% of the
outstanding shares of the Trust. Shareholders may, under certain
circumstances, communicate with other shareholders in connection with
requesting a special meeting of shareholders. The Board of Trustees, however,
will call a special meeting for the purpose of electing Trustees if, at any
time, less than a majority of Trustees holding office at the time were elected
by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue
certificates representing Institutional, Administration or Service Shares.
Instead, the Transfer Agent maintains a record of each Institutional,
Administration and Service shareholder's ownership. Each shareholder receives
confirmation of purchase and redemption orders from the Transfer Agent. Shares
and any dividends and distributions paid by the Fund are reflected in account
statements from the Transfer Agent.
 
                                   TAXATION
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code and intends to continue to qualify for such
treatment. To qualify for treatment as a regulated investment company, the
Fund must satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
  The Fund intends to qualify to pay "exempt-interest dividends," as defined
in the Code. If it so qualifies, dividends paid by the Fund which are
attributable to interest on Municipal Securities and designated by the Fund as
exempt-interest dividends in a written notice mailed to the Fund shareholders
within sixty days after the close of its taxable year may be treated by
shareholders for all purposes as items of interest excludable from their gross
income under Section 103(a) of the Code. The recipient of tax-exempt income is
required to report such income on his federal income tax return. However, a
shareholder is advised to consult his tax adviser with respect to whether
exempt-interest dividends retain the exclusion under Section 103(a) if such
shareholder would be treated as a "substantial user" under Section 147(a)(1)
with respect to some or all of the tax-exempt obligations held by the Fund.
The Code provides that interest on indebtedness incurred or continued to
purchase or carry shares of the Fund is not deductible to the extent
attributable to exempt-interest dividends.
 
  Dividends paid by the Fund from any taxable net investment income, the
excess of net short-term capital gain over net long-term capital loss and
taxable original issue discount or market discount income will be taxable to
shareholders as ordinary income. Dividends paid by the Fund from the excess of
net long-term capital gain over net short-term capital loss will be taxable as
long-term capital gains regardless of how long the shareholders have held
their shares. These tax consequences will apply regardless of whether
distributions are received in cash or reinvested in shares. Certain
distributions paid by the Fund in January of a given year may be taxable to
shareholders as if received the prior
 
                                      28
<PAGE>
 
December 31. Shareholders will be informed annually about the amount and
character of distributions received from the Fund for federal income tax
purposes, including any distributions that may constitute a tax preference
item under the federal alternative minimum tax.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
(unless it is exempt from tax) even though the distribution represents a
return of a portion of the purchase price.
 
  Redemptions and exchanges of shares are taxable events on which a
shareholder may recognize a gain or loss. Any loss realized upon the
redemption of shares with a tax holding period of six months or less is
disallowed to the extent of any tax-exempt dividends received with respect to
such shares and, to the extent not disallowed, is treated as a long-term
capital loss to the extent of any distributions treated as long-term capital
gains with respect to such shares. Any loss realized on the redemption of
shares of the Fund may be disallowed if shares of the Fund are purchased
within a 61-day period beginning 30 days before and ending 30 days after such
redemption.
 
  Although all or a substantial portion of the dividends paid by the Fund may
be excluded by shareholders of the Fund from their gross income for federal
income tax purposes, the Fund may purchase specified private activity bonds,
the interest from which may be a preference item for purposes of the federal
alternative minimum tax (individual and corporate). All exempt-interest
dividends from the Fund will be considered in computing the "adjusted current
earnings" preference item for purposes of the corporate federal alternative
minimum tax, the corporate environmental tax, and the extent, if any, to which
a shareholder's Social Security or certain railroad retirement benefits are
taxable.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on taxable distributions, redemptions
and exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other
shareholders that are not U.S. persons under the Code are subject to different
tax rules and may be subject to nonresident alien withholding at the rate of
30% (or a lower rate provided by an applicable tax treaty) on amounts treated
as ordinary dividends from the Fund.
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local
or foreign taxes on payments received from the Fund. A state income (and
possibly local income and/or intangible property) tax exemption is generally
available to the extent the Fund's distributions are derived from interest on
(or, in the case of intangible taxes, the value of its assets is attributable
to) certain U.S. Government obligations and/or tax-exempt municipal
obligations issued by or on behalf of the particular state or a political
subdivision thereof, provided in some states that certain thresholds for
holdings of such obligations and/or reporting requirements are satisfied.
 
  SHAREHOLDERS SHOULD CONSULT THEIR OWN TAX ADVISORS WITH RESPECT TO THE
FEDERAL, STATE, LOCAL AND FOREIGN TAX CONSEQUENCES OF INVESTING IN THE FUND IN
THEIR PARTICULAR CIRCUMSTANCES. SEE THE
 
                                      29
<PAGE>
 
ADDITIONAL STATEMENT FOR A FURTHER DISCUSSION OF CERTAIN TAX CONSEQUENCES OF
INVESTING IN SHARES OF THE FUND.
 
                            ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at the meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days
when the Investment Adviser, The Northern Trust Company, State Street Bank and
Trust Company and the Federal Reserve Bank of New York are open for business,
which is Monday through Friday except for holidays. Such holidays currently
are: New Year's Day (observed), Martin Luther King Day, Presidents' Day
(observed), Good Friday, Memorial Day (observed), Independence Day, Labor Day,
Columbus Day, Thanksgiving and Christmas. On those days when one or more of
such organizations close early as a result of such day being a partial holiday
or otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                      30
<PAGE>
 
                              ADMINISTRATION PLAN
 
  The Trust, on behalf of the Fund, has adopted an Administration Plan with
respect to the Administration Shares which authorizes the Fund to compensate
Service Organizations for providing account administration services to their
customers who are beneficial owners of such Shares. The Trust, on behalf of the
Fund, will enter into agreements with Service Organizations which purchase
Administration Shares on behalf of their customers ("Service Agreements"). The
Service Agreements will provide for compensation to the Service Organizations
in an amount up to 0.25% (on an annualized basis) of the average daily net
assets of the Administration Shares of the Fund attributable to or held in the
name of the Service Organization for its customers. The services provided by
the Service Organizations may include acting, directly or through an agent, as
the sole shareholder of record, maintaining account records for customers and
processing orders to purchase, redeem or exchange Administration Shares for
customers.
 
  For the fiscal year ended October 31, 1994, the Trust, on behalf of the Fund,
paid the Service Organizations fees at an annual rate of 0.25% of the Fund's
average daily net assets attributable to Administration Shares.
 
  Holders of Administration Shares of the Fund will bear all expenses and fees
paid to Service Organizations with respect to such Shares as well as any other
expenses which are directly attributable to such Shares.
 
  Service Organizations (other than broker-dealers) may charge other fees to
their customers who are the beneficial owners of Administration Shares in
connection with their customer accounts. These fees would be in addition to any
amounts received by the Service Organization under a Service Agreement and may
affect the return earned on an investment in the Fund. The Trust, on behalf of
the Fund, will accrue payments pursuant to a Service Agreement daily. All
inquires of beneficial owners of Administration Shares should be direct to such
owners' Service Organization.
 
                            REPORTS TO SHAREHOLDERS
 
  Recordholders of Administration Shares of the Fund will receive an annual
report containing audited financial statements and a semi-annual report. Each
recordholder of Administration Shares, will also be provided with a printed
confirmation for each transaction in its account and monthly account statement.
A year-to-date statement for any account will be provided to a Service
Organization upon request made to Goldman Sachs.
 
  Service Organizations will be responsible for providing services similar to
those described above to their customers who are the beneficial owners of such
Shares. For example, Service Organizations are responsible for providing each
customer exercising investment discretion with monthly statements with respect
to such customer's account in lieu of an immediate confirmation of each
transaction.
 
                       PURCHASE OF ADMINISTRATION SHARES
 
  It is expected that all direct purchasers of Administration Shares of the
Fund will be Service Organizations or their nominees. Customers of Service
Organizations may invest in Administration Shares only through their Service
Organizations. Administration Shares of the Fund may be purchased by a Service
Organization through Goldman Sachs at the net asset value per share next
determined after
 
                                       31
<PAGE>
 
receipt from a Service Organization of an order without the imposition of a
sales load. If, by 3:00 p.m. Chicago time (4:00 p.m. New York time), an order,
a check or a Federal Reserve draft is received from a Service Organization by
Goldman Sachs, the price per share will be the net asset value per share
computed on the day the purchase order or such form of payment is received. See
"Net Asset Value."
 
PURCHASE PROCEDURES
 
  Purchases of Administration Shares by a Service Organization may be made by
placing an order with Goldman Sachs at 800-621-2550 and either wiring Federal
Funds to The Northern Trust Company ("Northern") as subcustodian for State
Street Bank and Trust Company ("State Street") on the next Business Day or
initiating an ACH transfer to ensure receipt by Northern on the next Business
Day. Purchases may also be made by a Service Organization by check (except that
a check drawn on a foreign bank will not be accepted) or Federal Reserve draft
made payable to "Goldman Sachs Trust -- GS Short Duration Tax-Free Fund" and
should be directed to Goldman Sachs Trust -- GS Short Duration Tax-Free Fund,
c/o GSAM Shareholder Services, 4900 Sears Tower, Chicago, Illinois 60606.
Payment of the proceeds of redemption of shares purchased by check may be
delayed for a period of time as described under "Redemption of Administration
Shares."
 
  The Service Organizations are responsible for the timely transmittal of
purchase orders to Goldman Sachs and payments to Northern or Goldman Sachs. In
order to facilitate timely transmittal, the Service Organizations have
established times by which purchase orders and payments must be received by
them.
 
OTHER PURCHASE INFORMATION
 
  The Fund does not have any minimum purchase or account requirements with
respect to Administration Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Administration Shares,
and may establish other requirements such as a minimum required account
balance. A Service Organization may effect redemptions of noncomplying
accounts, and may impose a charge for any special services rendered to its
customers. Customers should contact their Service Organization for further
information concerning such requirements and charges.
 
  The Fund reserves the right to redeem Administration Shares of any Service
Organization whose account balance is less than $100 as a result of earlier
redemptions. Such redemptions will not be implemented if the value of such
shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days prior written
notice to Service Organizations whose Administration Shares are being redeemed
to allow them to purchase sufficient additional Administration Shares to avoid
such redemption.
 
PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is received
from a Service Organization by Goldman Sachs by 3:00 p.m. Chicago time, the
purchased shares will be issued and dividends will begin on such shares on the
next Business Day, provided that a Federal Funds wire or an ACH transfer is
received by Northern on such day.
 
PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a Service Organization's check
or Federal Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago
time, the purchased shares will be issued and dividends will begin on such
shares on the next Business Day after the Service Organization's check or
Federal Reserve draft is received by Goldman Sachs.
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges of
Administration Shares by a particular
 
                                       32
<PAGE>
 
purchaser (or group of related purchasers). The Fund or Goldman Sachs may
reject or restrict purchases or exchanges of Administration Shares by a
particular purchaser or group, for example, when a pattern of frequent
purchases and sales or exchanges of Administration Shares of the Fund is
evident, or if the purchase and sale or exchange orders are, or a subsequent
abrupt redemption might be, of a size that would disrupt management of the
Fund.
 
                               EXCHANGE PRIVILEGE
 
  Administration Shares of the Fund may be exchanged by Service Organizations
for (i) Administration Shares of any other mutual fund sponsored by Goldman
Sachs and designated as an eligible fund for this purpose and (ii) the relevant
class of any portfolio of Goldman Sachs Money Market Trust at the net asset
value next determined either by writing to Goldman Sachs, Attention: Goldman
Sachs Trust -- GS Short Duration Tax-Free Fund, c/o GSAM Shareholder Services,
4900 Sears Tower, Chicago, Illinois 60606 or, if previously elected in the
Fund's Account Information Form, by telephone at 800-621-2550 (7:00 a.m. to
3:00 p.m. Chicago time). A shareholder should obtain and read the prospectus
relating to any other fund and its shares or units and consider its investment
objective, policies and applicable fees before making an exchange.
Administration Shares acquired by telephone exchange must be registered in the
same name(s) and have the same address as Administration Shares of the Fund
from which the exchange is being made.
 
  "In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Administration Shares" to confirm
that such instructions are genuine. For federal income tax purposes, an
exchange is treated as a sale of the Administration Shares surrendered in the
exchange, on which an investor may realize a gain or loss, followed by a
purchase of Administration Shares or the relevant of class of any portfolio of
Goldman Sachs Money Market Trust received in the exchange. Shareholders should
consult their own tax advisers concerning the tax consequences of an exchange.
Exchanges are available only in states where exchanges may legally be made. The
exchange privilege may be modified or withdrawn at any time on sixty (60) days'
written notice to recordholders of Administration Shares and is subject to
certain limitations (see "Purchase of Administration Shares.")
 
                      REDEMPTION OF ADMINISTRATION SHARES
 
  The Fund will redeem its Administration Shares upon request of the
recordholder of such Shares on any Business Day at the net asset value next
determined after the receipt by the Transfer Agent of such request in proper
form. See "Net Asset Value." If Administration Shares to be redeemed were
recently purchased by check, the Fund may delay transmittal of redemption
proceeds until such time as it has assured itself that good funds have been
collected for the purchase of such Administration Shares. This may take up to
fifteen (15) days. Redemption requests may be made by writing to or calling the
Transfer Agent at the address or telephone number set forth on the inside front
cover page of this Prospectus. A Service Organization may request redemptions
by telephone if the optional telephone redemption privilege is elected on the
Account Information Form. It may be difficult to implement redemptions by
telephone in times of drastic economic or market changes. In an effort to
prevent unauthorized or
 
                                       33
<PAGE>
 
fraudulent redemption or exchange requests by telephone, Goldman Sachs employs
reasonable procedures specified by the Trust to confirm that such instructions
are genuine. Among other things, any redemption request that requires money to
go to an account or address other than that designated on the Account
Information Form must be in writing and signed by an authorized person
designated on the Account Information Form. Any such written request is also
confirmed by telephone with both the requesting party and the designated bank
account to verify instructions. Exchanges among accounts with different names,
addresses and social security or other taxpayer identification numbers must be
in writing and signed by an authorized person designated on the Account
Information Form. Other procedures may be implemented from time to time. If
reasonable procedures are not implemented, the Trust may be liable for any loss
due to unauthorized or fraudulent transactions. In all other cases, neither the
Fund, the Trust nor Goldman Sachs will be responsible for the authenticity of
redemption or exchange instructions received by telephone. If Goldman Sachs
receives a redemption request by 3:00 p.m. Chicago time, the Administration
Shares to be redeemed earn dividends with respect to the day the request is
received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired to the recordholder of Administration Shares. Redemption proceeds
will normally be wired on the next Business Day in Federal Funds (for a total
one-day delay), but may be paid up to seven (7) days after receipt of a
properly executed redemption request. Wiring of redemption proceeds may be
delayed one additional Business Day if the Federal Reserve Bank is closed on
the day redemption proceeds would ordinarily be wired. Once wire transfer
instructions have been given by Goldman Sachs, neither the Fund, the Trust nor
Goldman Sachs assumes any further responsibility for the performance of
intermediaries or the customer's Service Organization in the transfer process.
If a problem with such performance arises, the customer should deal directly
with such intermediaries or Service Organization.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by the Transfer Agent. The
request for such redemption will not be considered to have been received in
proper form until such additional documentation has been submitted to the
Transfer Agent by the recordholder of Administration Shares.
 
  The Service Organizations are responsible for the timely transmittal of
redemption requests by their customers to the Transfer Agent. In order to
facilitate timely transmittal of redemption requests, Service Organizations
have established times by which redemption requests must be received by them.
Additional documentation may be required when deemed appropriate by a Service
Organization.
 
  Except with respect to Service Organizations whose account balances are less
than $100, Administration Shares of the Fund are not redeemable at the option
of the Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                               ----------------
 
                                       34
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Summary....................................................................   3
Financial Highlights.......................................................   8
Investment Objective and Policies..........................................   9
Investment Adviser.........................................................  10
Municipal Securities and Other
 Investments...............................................................  11
Other Investments and Practices............................................  15
Risk Factors...............................................................  19
Investment Restrictions....................................................  22
Portfolio Turnover.........................................................  22
Management.................................................................  22
Dividends..................................................................  24
Net Asset Value............................................................  25
Performance Information....................................................  25
Shares of the Trust........................................................  26
Taxation...................................................................  28
Additional Information.....................................................  30
Administration Plan........................................................  31
Reports to Shareholders....................................................  31
Purchase of Administration Shares..........................................  31
Exchange Privilege.........................................................  33
Redemption of Administration Shares........................................  33
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                               GS SHORT DURATION
                                 TAX-FREE FUND
                             ADMINISTRATION SHARES
 
                                  MANAGED BY
                                  ----------

                                 GOLDMAN SACHS
                               ASSET MANAGEMENT,
                       A SEPARATE OPERATING DIVISION OF
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
                                  PROSPECTUS
 
                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
                        GS SHORT DURATION TAX-FREE FUND
                                SERVICE SHARES
 
                                  MANAGED BY
                                  ----------

                        GOLDMAN SACHS ASSET MANAGEMENT
                                AN AFFILIATE OF
                             GOLDMAN, SACHS & CO.
 
                               ---------------
 
  GS Short Duration Tax-Free Fund (the "Fund") is one fund in a family of
funds advised by Goldman Sachs Asset Management (the "Investment Adviser") or
its affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
  The Fund seeks to provide investors with a high level of current income,
consistent with relatively low volatility of principal, that is exempt from
regular federal income tax. The Fund will seek to achieve its objective
primarily through investments in fixed income municipal securities. All of
such securities will have remaining effective maturities of five years or
less. The Fund will maintain an average portfolio duration of two to three
years. The Fund's investments in municipal securities at the time of
investment will be rated at least A by Standard & Poor's Ratings Group
("Standard & Poor's") or Moody's Investors Service, Inc. ("Moody's") or their
equivalent ratings or, if unrated by such rating organizations, determined by
the Investment Adviser to be of comparable credit quality. THE FUND'S WEIGHTED
AVERAGE PORTFOLIO MATURITY WILL, UNDER NORMAL CIRCUMSTANCES, BE SIGNIFICANTLY
LONGER THAN THE FUND'S AVERAGE PORTFOLIO DURATION OF TWO TO THREE YEARS.
 
  Goldman Sachs Asset Management, New York, New York, a separate operating
division of Goldman, Sachs & Co., serves as the Fund's investment adviser.
Goldman, Sachs & Co. serves as the Fund's distributor and transfer agent. The
Trust's custodian is State Street Bank and Trust Company.
 
                                                       (continued on next page)
 
SERVICE SHARES OF THE FUND ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED
OR ENDORSED BY, ANY BANK OR OTHER INSURED DEPOSITORY INSTITUTION, AND ARE NOT
INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE
BOARD OR ANY OTHER GOVERNMENT AGENCY. AN INVESTMENT IN SERVICE SHARES OF THE
FUND INVOLVES INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF PRINCIPAL.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
                 The date of this Prospectus is March 1, 1995
<PAGE>
 
 
  This Prospectus, which sets forth concisely the information about the Trust
and the Fund that a prospective investor ought to know before investing in
Service Shares, should be retained for future reference. A Statement of
Additional Information (the "Additional Statement"), dated March 1, 1995,
containing further information about the Trust and the Fund which may be of
interest to investors, has been filed with the Securities and Exchange
Commission, is incorporated herein by reference in its entirety, and may be
obtained without charge from institutions ("Service Organizations") that hold,
directly or through an agent, Service Shares for the benefit of their
customers, or Goldman, Sachs & Co. by calling the telephone number, or writing
to one of the addresses, listed below.
 
GOLDMAN SACHS TRUST                 GOLDMAN SACHS ASSET MANAGEMENT
4900 SEARS TOWER                    INVESTMENT ADVISER
CHICAGO, ILLINOIS 60606             ONE NEW YORK PLAZA      
                                    NEW YORK, NEW YORK 10004 
                                                             
                                                             
GOLDMAN, SACHS & CO.                GOLDMAN, SACHS & CO.   
DISTRIBUTOR                         TRANSFER AGENT          
85 BROAD STREET                     4900 SEARS TOWER        
NEW YORK, NEW YORK 10004            CHICAGO, ILLINOIS 60606 
 
TOLL FREE (IN U.S.)...............  800-621-2550
 
                                       2
<PAGE>
 
                                    SUMMARY
                                  INTRODUCTION
 
  GS Short Duration Tax-Free Fund (the "Fund") is one fund in a family of funds
advised by Goldman Sachs Asset Management (the "Investment Adviser") or its
affiliates, Goldman Sachs Funds Management, L.P. and Goldman Sachs Asset
Management International. The Fund is organized as a separate diversified
portfolio of Goldman Sachs Trust (the "Trust"), an open-end, management
investment company.
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a high level of
current income, consistent with relatively low volatility of principal, that is
exempt from regular federal income tax. The Fund will seek to achieve its
objective primarily through investments in fixed income securities ("Tax-Free
Securities") issued by or on behalf of states, territories and possessions of
the United States (including the District of Columbia) and their political
subdivisions, agencies and instrumentalities, the interest on which is exempt
from regular federal income tax and is not an item of tax preference under the
federal alternative minimum tax. In addition, Tax-Free Securities include
certain participation interests and other securities described under "Municipal
Securities and Other Investments" the interest on which is exempt from such
taxes.
 
  Under normal market conditions, the Fund will invest at least 80% of its net
assets in Tax-Free Securities. Although it does not expect to do so, the Fund
may invest up to 20% of its net assets in private activity bonds that may
subject certain investors to the federal alternative minimum tax. Tax-Free
Securities and private activity bonds are referred to herein as "Municipal
Securities." The Fund, although it is not expected to do so, may also invest up
to 20% of its net assets in taxable investments which are obligations issued or
guaranteed by the U.S. Government, its agencies and instrumentalities and
repurchase agreements collateralized by U.S. Government securities ("Taxable
Investments"). Except as set forth below, at no time will the Fund's
investments in private activity bonds and Taxable Investments exceed, in the
aggregate, 20% of the Fund's net assets. For temporary defensive purposes, the
Fund may invest more than 20% of its net assets in Taxable Investments. The
Fund may generate capital gains that are taxable. See "Taxation."
 
  The Fund will maintain an average portfolio duration, as defined under
"Investment Objectives and Policies," of two to three years. The individual
Municipal Securities in which the Fund invests will have remaining effective
maturities of five years or less. The effective maturity of a Municipal
Security, unlike its stated maturity, is the period remaining until the
principal can be recovered through a mandatory redemption provision or the
exercise of a put or demand feature by the holder of the Municipal Security or
the period until the next scheduled auction date for an auction rate Municipal
Security. Since the Fund uses duration as a criteria, there are no maximum
limitations as to average weighted portfolio maturity or permissible stated
maturity with respect to individual securities.
 
  The Fund's investments in Municipal Securities at the time of investment will
be rated at least A by Standard & Poor's or Moody's or their equivalent ratings
or, if unrated by such rating organizations, determined by the Investment
Adviser to be of comparable credit quality.
 
  Although the Fund's net asset value per share will fluctuate more than that
of a money market fund, which attempts to maintain a stable net asset value per
share, the Fund will attempt to maintain limited
 
                                       3
<PAGE>
 
fluctuation in net asset value per share relative to longer-term municipal bond
funds, but is not expected to generate as high a level of income as such funds.
In periods of falling interest rates the Fund may experience a lower total
return than a longer-term, fixed rate municipal bond fund; however, it is
expected that the Fund will have less interest rate risk and net asset value
fluctuation than such funds, but more than those of a money market fund. There
can be no assurance that the Fund will achieve its investment objective.
 
                               INVESTMENT ADVISER
 
  Pursuant to an Investment Advisory Agreement, Goldman Sachs Asset Management,
a separate operating division of Goldman, Sachs & Co. ("Goldman Sachs"), serves
as the Fund's investment adviser. In this capacity, the Investment Adviser
provides investment advisory and administrative services and receives from the
Fund a monthly fee equal on an annual basis to 0.40% of the Fund's average
daily net assets. Goldman Sachs is registered with the Securities and Exchange
Commission (the "SEC") as an investment adviser. See "Investment Adviser" and
"Management -- Investment Adviser."
 
                   PURCHASE AND REDEMPTION OF SERVICE SHARES
 
  It is expected that all purchasers of Service Shares of the Fund will be
Service Organizations or their nominees. Customers of Service Organizations may
invest in Service Shares only through their Service Organizations. Service
Shares of the Fund may be purchased by Service Organizations through Goldman
Sachs at the current net asset value per share without the imposition of a
sales load. The Fund does not have any minimum purchase or account requirements
with respect to Service Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Service Shares, and
may establish other requirements such as a minimum account balance. See
"Purchase of Service Shares." The Fund will redeem its Service Shares upon
request of a shareholder on any Business Day at the net asset value next
determined after receipt of such request in proper form. See "Redemption of
Service Shares."
 
                         DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs serves as the distributor to and transfer agent for the Fund.
Under the Distribution Agreement with the Fund, Goldman Sachs acts as exclusive
agent for the Fund in the sale of shares. Under the Transfer Agency Agreement
with the Fund, Goldman Sachs provides transfer agency services and responds to
inquiries from Service Organizations. See "Management -- Distributor and
Transfer Agent."
 
                                  RISK FACTORS
 
  The Fund's investments in Municipal Securities entail certain risks,
including adverse income and principal value fluctuation associated with
general economic conditions affecting the Municipal Securities markets, the
issuers and guarantors of Municipal Securities and the facilities financed by
Municipal Securities as well as adverse interest rate changes and volatility of
yields of short and intermediate term Municipal Securities. See "Risk Factors."
In addition, the Fund's yield will be subject to risks associated with
particular issues in which it invests, including potential defaults by issuers
and guarantors and the size and rating of an issue.
 
                                       4
<PAGE>
 
 
  While the Fund will seek to provide investors with a high level of current
income, consistent with low volatility of principal, that is exempt from
regular federal income tax, the Fund's current income and net asset value will
fluctuate. If the Fund invests in Taxable Investments, as permitted,
distributions of any income earned on such Taxable Investments will result in
taxable income to shareholders. If the Fund acquires Municipal Securities or
Taxable Investments at a market discount, distributions from accrued market
discount income will also be taxable to shareholders. If the Fund invests in
private activity bonds, distributions attributable to the interest on such
securities may be a tax preference item subject to the federal alternative
minimum tax. A reduction in federal income tax rates would reduce the tax
equivalent yield of the Fund and would tend to reduce the value of Municipal
Securities held in the Fund's portfolio. Conversely, an increase in federal
income tax rates would increase the taxable equivalent yield of the Fund. In
addition, changes in federal law adversely affecting the tax-exempt status of
income derived from Municipal Securities could significantly affect both the
supply and demand for Municipal Securities, which in turn could affect the
Fund's ability to acquire and dispose of Municipal Securities at favorable
prices. Shareholders may be subject to state and local taxes on income received
from the Fund. Although over the long term it is expected that the volatility
of the Fund will be low in relation to longer-term bond funds, the inherent
volatility risk is such that, during any particular period, there may be a loss
of principal.
 
  The Fund may engage in short-term trading to benefit from yield disparities
among different issues of Municipal Securities, to seek short-term profits
during periods of fluctuating interest rates or for other reasons. Such trading
will increase the Fund's portfolio turnover rate and may therefore increase the
incidence of short-term capital gains (distributions of which are taxable to
shareholders as ordinary income).
 
  The Fund may enter into transactions in certain derivative instruments
including futures, options on futures, options on securities and securities
indices and interest rate swaps, floors, caps and collars. The Fund may enter
into these transactions for hedging purposes and to seek to increase total
return. The Fund's use of such investment practices and derivative instruments
involves certain risks. These include the risk of loss if the Investment
Adviser is incorrect in its expectation of fluctuations in securities prices or
interest rates in connection with transactions to increase total return. In
addition, in the case of hedging transactions, there may be a possible lack of
correlation between changes in the value of the hedging instruments and the
portfolio assets being hedged. The Fund could also be exposed to risk of loss
if it is unable to close out its derivative positions because of an illiquid
secondary market. Distributions of any net income or net realized capital gains
from such derivative transactions are taxable to shareholders.
 
  CONFLICT OF INTEREST. The involvement of Goldman Sachs, its divisions and
affiliates (including the Investment Adviser), partners and officers, in the
investment activities and business operations of the Fund may present certain
conflicts of interest, as described under "Management -- Investment Adviser."
 
                                DIVIDEND POLICY
 
  The Fund intends to declare a daily dividend determined with the objective of
distributing the majority of net investment income while enhancing the
stability of principal. Such dividends will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially
all of the Fund's net investment
 
                                       5
<PAGE>
 
income. From time to time a portion of such dividends may constitute an
economic return of capital, a portion of which may nevertheless be taxable as
ordinary income. The Fund also intends that net realized capital gains, if any,
after offset by any available capital loss carryforwards from prior taxable
years, will be declared as a dividend at least annually. Recordholders of
Service Shares will receive dividends in additional Service Shares of the Fund
or may elect to receive cash. For further information concerning dividends, see
"Dividends."
 
                                    TAXATION
 
  The Fund has qualified and elected to be treated as a regulated investment
company under Subchapter M of the Internal Revenue Code of 1986, as amended
(the "Code"), and it intends to continue to qualify for such treatment. The
Fund will distribute the tax-exempt interest it receives from Municipal
Securities as "exempt-interest dividends." As a regulated investment company,
the Fund will not be required to pay federal income tax on taxable and tax-
exempt income or capital gains that it distributes to its shareholders in
accordance with the timing requirements of the Code. Shareholders may treat the
exempt-interest dividends they receive from the Fund as interest exempt from
regular federal income tax, although a portion of such dividends may be subject
to the federal alternative minimum tax for some shareholders. Distributions
from the Fund's taxable income or capital gain, if any, generally will be
taxable. See "Taxation."
 
                              ADDITIONAL SERVICES
 
  The Trust, on behalf of the Fund, has adopted a Service Plan with respect to
the Service Shares of the Fund which authorizes the Fund to compensate Service
Organizations for providing account administration and shareholder liaison
services to their customers who are the beneficial owners of such Shares. The
Trust, on behalf of the Fund, will enter into agreements with each Service
Organization which will provide for compensation to the Service Organization in
an amount up to 0.50% (on an annualized basis) of the average daily net assets
of the Service Shares of the Fund attributable to or held in the name of the
Service Organization for its customers. See "Additional Services."
 
                                       6
<PAGE>
 
 
                               FEES AND EXPENSES
                               (SERVICE SHARES)*
 
<TABLE>
<CAPTION>
                                                             GS SHORT DURATION
                                                               TAX-FREE FUND
                                                             -----------------
<S>                                                          <C>
SHAREHOLDER TRANSACTION EXPENSES:
 Maximum Sales Load Imposed on Purchases....................       None
 Maximum Sales Load Imposed on Reinvested Dividends.........       None
 Redemption Fees............................................       None
 Exchange Fees..............................................       None
ANNUAL FUND OPERATING EXPENSES: (AS A PERCENTAGE OF AVERAGE
NET ASSETS)
 Management Fees............................................       0.40%
 Service Fees...............................................       0.50%**
 Other Expenses (after expense limitation)..................       0.05%***
                                                                   ----
  TOTAL FUND OPERATING EXPENSES (AFTER EXPENSE LIMITATION)..       0.95%***
                                                                   ====
</TABLE>
 
EXAMPLE:
 
You would pay the following expenses on a hypothetical $1,000 investment,
assuming (1) a 5% annual return and (2) redemption at the end of each time
period:
 
<TABLE>
<CAPTION>
1 YEAR  3 YEARS  5 YEARS  10 YEARS
- ------  -------  -------  --------
<S>     <C>      <C>      <C>
 $10     $30      $53      $117
</TABLE>                       

- --------                       
 *  The information set forth in the foregoing table and hypothetical example
    relates only to Service Shares of the Fund. See "Shares of the Trust."
    Institutional Shares and Administration Shares of the Fund are subject to
    different fees and expenses. Institutional Shares are not subject to any
    administration or service fees. Administration Shares are subject to an
    administration fee of up to 0.25% of average daily net assets. All other
    expenses related to Institutional Shares and Administration Shares are the
    same as for Service Shares.
 ** Service Organizations (other than broker-dealers) may charge other fees to
    their customers who are beneficial owners of Service Shares in connection
    with their customer accounts. See "Additional Services."
*** The Investment Adviser voluntarily agreed to reduce or limit certain "Other
    Expenses" of the Fund (excluding advisory fees, payments to Service
    Organizations, taxes, interest and brokerage and litigation,
    indemnification and other extraordinary expenses) to the extent such
    expenses exceeded 0.05% per annum of the Fund's average net assets. If the
    Investment Adviser had not agreed to reduce or otherwise limit certain
    "Other Expenses" of the Fund, the Fund's other expenses and total operating
    expenses attributable to Service Shares of the Fund would have been 0.21%
    and 1.11%, respectively, on an annualized basis. The foregoing table and
    example also reflect current operating expenses that will be applicable on
    an ongoing basis. See "Management -- Investment Adviser."
 
  The purpose of the foregoing table is to assist investors in understanding
the various costs and expenses of the Fund that an investor in the Fund will
bear directly or indirectly. The costs and expenses included in the table and
hypothetical example above should not be considered as representative of past
or future expenses. Actual fees and expenses may be greater or less than those
indicated. Moreover, while the example assumes a 5% annual return, the Fund's
actual performance will vary and may result in an actual return greater or less
than 5%. See "Management" and "Additional Services." Investors should be aware
that, due to the service fees, a long-term shareholder in the Fund may pay over
time more than the economic equivalent of the maximum front-end sales charge
permitted under the rules of the National Association of Securities Dealers,
Inc.
 
                                       7
<PAGE>
 
                             FINANCIAL HIGHLIGHTS
 
         SELECTED DATA FOR A SHARE OUTSTANDING THROUGHOUT EACH PERIOD
 
  The following data with respect to Institutional Shares, Administration
Shares and Service Shares of the Fund outstanding during the periods indicated
has been audited by Arthur Andersen LLP, independent public accountants, as
indicated in their report incorporated by reference and attached to the
Additional Statement from the Fund's annual report to shareholders for the
fiscal year ended October 31, 1994 (the "Annual Report"). This information
should be read in conjunction with the financial statements and related notes
incorporated by reference and attached to the Additional Statement. The Annual
Report also contains performance information and is available upon request and
without charge by writing to any of the addresses on the inside cover of this
Prospectus.
 
<TABLE>
<CAPTION>
                                                                                DISTRIBUTIONS
                                  INCOME FROM INVESTMENT OPERATIONS         TO SHAREHOLDERS FROM
                               ------------------------------------------  -----------------------
                                                                TOTAL
                     NET ASSET               NET REALIZED   INCOME (LOSS)                          NET ASSET
                     VALUE AT     NET       AND UNREALIZED      FROM          NET     NET REALIZED VALUE AT
                     BEGINNING INVESTMENT   GAIN (LOSS) ON   INVESTMENT    INVESTMENT   GAIN ON     END OF       TOTAL
                     OF PERIOD   INCOME      INVESTMENTS     OPERATIONS      INCOME   INVESTMENTS   PERIOD      RETURN(c)
                     --------- ----------   --------------  -------------  ---------- ------------ ------------ --------- 
FOR THE YEARS ENDED OCTOBER 31,
<S>                  <C>       <C>          <C>             <C>            <C>        <C>          <C>       <C>
1994-
Institutional
shares..........      $10.23    $0.3787(a)     $(0.3575)(a)    $0.0212 (a)  $(0.3787)   $(0.0825)    $9.79    0.17%
1994-Administration
shares..........       10.23     0.3537(a)      (0.3575)(a)    (0.0038)(a)   (0.3537)    (0.0825)     9.79   (0.11)
1994-Service
shares (b)......        9.86     0.0475(a)      (0.0700)(a)    (0.0225)(a)   (0.0475)        --       9.79   (0.32)(d)
1993-
Institutional
shares..........        9.93     0.3834          0.3000         0.6834       (0.3834)        --      10.23    7.03
1993-Administration
shares (b)......       10.16     0.1555          0.0720         0.2275       (0.1555)        --      10.23    2.28 (d)
FOR THE PERIOD OCTOBER 1, 1992 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1992-
Institutional
shares..........       10.00     0.0341         (0.0700)       (0.0359)      (0.0341)        --       9.93   (0.34)(d)

<CAPTION> 
                                                                              RATIOS
                                                                        ASSUMING NO WAIVER
                                                                          OF-ADVISORY-FEES
                                                                       OR EXPENSE LIMITATIONS 
                                                                       ----------------------
                                  RATIO OF NET                                    RATIO OF NET
                     RATIO OF NET  INVESTMENT              NET ASSETS  RATIO OF    INVESTMENT
                     EXPENSES TO   INCOME TO   PORTFOLIO   AT END OF  EXPENSES TO  INCOME TO
                     AVERAGE NET  AVERAGE NET  TURNOVER      PERIOD     AVERAGE   AVERAGE NET
                       ASSETS       ASSETS      RATIO     (IN 000'S)  NET ASSETS     ASSETS
                     ------------ ------------ ----------- ---------- ----------- ------------
<S>                  <C>          <C>          <C>         <C>        <C>         <C>
1994-
Institutional
shares..........         0.45%        3.74%     354.00%     $83,704      0.61%        3.58%
1994-Administration
shares..........         0.70         3.51      354.00        3,866      0.86         3.35
1994-Service
shares (b)......         0.95(e)      4.30(e)   354.00           44      1.11(e)      4.14(e)
1993-
Institutional
shares..........         0.41         3.70      404.60      115,803      1.06         3.05
1993-Administration
shares (b)......         0.70(e)      3.32(e)   404.60          911      1.07(e)      2.95(e)
FOR THE PERIOD OCTOBER 1, 1992 (COMMENCEMENT OF OPERATIONS) THROUGH OCTOBER 31,
1992-
Institutional
shares..........         0.05(e)      4.58(e)    31.19(d)    14,601      2.68(e)      1.95(e)
</TABLE>
- ----
(a) Calculated based on the average shares outstanding methodology.
(b) Administration and Service share activity commenced on May 20, 1993 and
    September 20, 1994, respectively.
(c) Assumes investment at the net asset value at the beginning of the period,
    reinvestment of all dividends and distributions and a complete redemption
    of the investment at the net asset value at the end of the period.
(d) Not annualized.
(e) Annualized.
 
                                       8
<PAGE>
 
                       INVESTMENT OBJECTIVE AND POLICIES
 
  The Fund's investment objective is to provide investors with a high level of
current income, consistent with relatively low volatility of principal, that
is exempt from regular federal income tax. The Fund will seek to achieve its
objective primarily through investments in fixed income securities ("Tax-Free
Securities") issued by or on behalf of states, territories and possessions of
the United States (including the District of Columbia) and their political
subdivisions, agencies and instrumentalities, the interest on which is exempt
from regular federal income tax and is not a tax preference item under the
federal alternative minimum tax. Tax-Free Securities are also defined to
include certain participation interests in such securities the interest on
which is, in the opinion of counsel, exempt from such taxes. In addition, the
definition of Tax-Free Securities includes general obligation and revenue
bonds and other obligations described under "Municipal Securities and Other
Investments."
 
  Under normal market conditions, the Fund will invest at least 80% of its net
assets in Tax-Free Securities. Although it does not expect to do so, the Fund
may invest up to 20% of its net assets in private activity bonds that may
subject certain investors to the federal alternative minimum tax.
 
  The Fund's investments in Municipal Securities will at the time of
investment be rated at least A by Standard & Poor's or Moody's or their
respective equivalent ratings or, if unrated by such rating organizations,
determined by the Investment Adviser to be of comparable credit quality. A
security will be deemed to have met this requirement if it receives the
minimum required rating from at least one such rating organization even if it
has been rated below the minimum rating by one or more other rating
organizations. The credit rating assigned to Municipal Securities by these
rating organizations or by the Investment Adviser may reflect the existence of
guarantees, letters of credit or other credit enhancement features available
to the issuers or holders of such Municipal Securities.
 
  Although the Fund is not expected to do so, the Fund may invest as much as
20% of its net assets in taxable investments, which are defined as obligations
issued or guaranteed by the U.S. Government, its agencies and
instrumentalities and repurchase agreements collateralized by U.S. Government
securities ("Taxable Investments"). Except as set forth below, at no time will
the Fund's investments in private activity bonds and Taxable Investments
exceed, in the aggregate, 20% of the Fund's net assets. The Fund may for
temporary defensive purposes depart from its stated investment objective and
invest more than 20% of its net assets in Taxable Investments. The Fund's
investments in Municipal Securities and Taxable Investments may also generate
taxable capital gains. See "Taxation."
 
  The individual Municipal Securities in which the Fund invests will have
effective maturities of five years or less. The effective maturity of a
Municipal Security is defined as the period remaining until the earliest date
when the Fund can recover the principal amount of such security through
mandatory redemption or prepayment by the issuer, the exercise by the Fund of
a put option, demand feature or tender option granted by the issuer or a third
party or the payment of the principal on the stated maturity date. The
effective maturity of an auction rate Municipal Security is defined as the
period remaining until the next scheduled auction date. Thus, the effective
maturity of a Municipal Security may be substantially shorter than its final
stated maturity.
 
  The Fund will maintain an average portfolio duration in a range of two to
three years. The maturity of a security focuses on the time at which the final
payment is made. Maturity does not, however, take
 
                                       9
<PAGE>
 
into account payments which are made prior to the final payment, such as
periodic coupon payments. Duration, on the other hand, takes into account all
such interim payments by measuring the value weighted average maturity of all
principal and interest payments over time. For this purpose, the maturity of
principal payments will be determined in the same manner as the effective
maturity of individual Municipal Securities. The duration of the Fund's
portfolio will be shortened by the acquisition of Municipal Securities at a
premium, the sale of futures contracts and investments in variable and
floating rate securities, auction rate securities, tender option bonds,
participations and other Municipal Securities that are subject to put, demand,
tender, auction or mandatory redemption features and pre-refunded Municipal
Securities. The duration of the Fund's portfolio will be lengthened by the
acquisition of Municipal Securities at a discount, the purchase of futures
contracts and the purchase of when-issued or forward commitment securities,
zero coupon, deferred interest and capital appreciation bonds and inverse
floating rate instruments. Since the Fund uses duration as a criterion, there
are no maximum limitations as to average weighted portfolio maturity or
permissible stated maturity with respect to individual securities.
 
  Within this context, duration is a significant indicator of the sensitivity
of the Fund's net asset value to changes in market interest rates. However,
the computation of duration involves a greater degree of judgment and less
certainty than the computation of weighted average portfolio maturity based on
the stated maturities of portfolio investments. The Fund's weighted average
portfolio maturity will, under normal circumstances, be significantly longer
than the Fund's average portfolio duration of two to three years.
 
  Except as otherwise stated under "Investment Restrictions," and except for
the Fund's policy to invest under normal market conditions, 80% of its net
assets in Tax-Free Securities, the Fund's investment objective and policies
are not fundamental and may be changed without a vote of shareholders. If
there is a change in the Fund's investment objective, shareholders should
consider whether the Fund remains an appropriate investment in light of their
then current financial positions and needs. There can be no assurance that the
Fund will achieve its investment objective.
 
                              INVESTMENT ADVISER
 
  The Fund's investment adviser is Goldman Sachs Asset Management, a separate
operating division of Goldman Sachs. The management services provided by the
Investment Adviser are subject to the general supervision of the Trust's Board
of Trustees. The Investment Adviser and its affiliates serve a wide range of
clients including private and public pension funds, endowments, foundations,
banks, thrifts, insurance companies, corporations, private investors and
family groups.
 
  Founded in 1869, Goldman Sachs is among the oldest and largest investment
banking firms in the United States. Goldman Sachs is a leader in virtually
every field of investing and financing, participating in financial markets
worldwide and serving individuals, institutions, corporations and governments.
Goldman Sachs is headquartered in New York and has offices throughout the
United States and in Beijing, Frankfurt, George Town, Hong Kong, London,
Madrid, Milan, Montreal, Osaka, Paris, Seoul, Shanghai, Singapore, Sydney,
Taipei, Tokyo, Toronto, Vancouver and Zurich.
 
  The Investment Adviser is able to draw on the research and market expertise
of Goldman Sachs, whose investment research effort is one of the largest in
the industry. The in-depth information and
 
                                      10
<PAGE>
 
analyses generated by Goldman Sachs' research analysts, economists and
portfolio strategists are available to the Investment Adviser.
 
                  MUNICIPAL SECURITIES AND OTHER INVESTMENTS
 
MUNICIPAL SECURITIES
 
  Municipal Securities consist of bonds, notes and other instruments issued by
or on behalf of states, territories and possessions of the United States
(including the District of Columbia) and their political subdivisions,
agencies or instrumentalities, the interest on which is, in the opinion of
bond counsel for the issuers or counsel selected by the Investment Adviser,
exempt from regular federal income tax (i.e., excluded from gross income for
federal income tax purposes but not necessarily exempt from the federal
alternative minimum tax or from state or local taxes). In addition, Municipal
Securities include participation interests in such securities the interest on
which is, in the opinion of bond counsel for the issuers or counsel selected
by the Investment Adviser, exempt from regular federal income tax. The
definition of Municipal Securities includes other types of securities that
currently exist or may be developed in the future and that pay interest that
is, or will be, in the opinion of counsel, as described above, exempt from
regular federal income tax, provided that investing in such securities is
consistent with the Fund's investment objective and policies. The Fund will
reflect any such change in its definition of Municipal Securities in its
Prospectus.
 
  Municipal Securities are often issued to obtain funds for various public
purposes, including the construction of a wide range of public facilities such
as bridges, highways, housing, hospitals, mass transportation, schools,
streets and water and sewer works. Other public purposes for which Municipal
Securities may be issued include refunding outstanding obligations, obtaining
funds for general operating expenses, and obtaining funds to lend to other
public institutions and facilities. Municipal Securities also include "private
activity" or industrial development bonds, which are issued by or on behalf of
public authorities to obtain funds for privately-operated housing facilities,
airport, mass transit or port facilities, sewage disposal, solid waste
disposal or hazardous waste treatment or disposal facilities and certain local
facilities for water supply, gas or electricity. In addition, proceeds of
certain industrial development bonds are used for constructing, equipping,
repairing or improving privately operated industrial or commercial facilities.
The interest income from private activity bonds may subject certain investors
to the federal alternative minimum tax.
 
  The two principal classifications of Municipal Securities are "general
obligations" and "revenue obligations." General obligations are secured by the
issuer's pledge of its full faith and credit for the payment of principal and
interest, although the characteristics and enforcement of general obligations
may vary according to the law applicable to the particular issuer. Revenue
obligations, which include, but are not limited to, private activity bonds,
resource recovery bonds, certificates of participation and certain municipal
notes, are not backed by the credit and taxing authority of the issuer, and
are payable solely from the revenues derived from a particular facility or
class of facilities or, in some cases, from the proceeds of a special excise
or other specific revenue source. Nevertheless, the obligations of the issuer
of a revenue obligation may be backed by a letter of credit, guarantee or
insurance. General obligations and revenue obligations may be issued in a
variety of forms, including commercial paper, variable and floating rate
securities, tender option bonds, auction rate bonds, zero coupon, deferred
interest and capital appreciation bonds.
 
 
                                      11
<PAGE>
 
  MUNICIPAL LEASES AND CERTIFICATES OF PARTICIPATION. The Fund may invest in
municipal leases and certificates of participation in municipal leases. A
municipal lease is an obligation in the form of a lease or installment
purchase which is issued by a state or local government to acquire equipment
and facilities. Interest income from such obligations is generally exempt from
state and local taxes in the state of issuance. Municipal leases frequently
involve special risks not normally associated with general obligations or
revenue bonds. Leases and installment purchase or conditional sale contracts
(which normally provide for title to the leased asset to pass eventually to
the governmental issuer) have evolved as a means for governmental issuers to
acquire property and equipment without meeting the constitutional and
statutory requirements for the issuance of debt. The debt issuance limitations
are deemed to be inapplicable because of the inclusion in many leases or
contracts of "non-appropriation" clauses that relieve the governmental issuer
of any obligation to make future payments under the lease or contract unless
money is appropriated for such purpose by the appropriate legislative body on
a yearly or other periodic basis. In addition, such leases or contracts may be
subject to the temporary abatement of payments in the event the issuer is
prevented from maintaining occupancy of the leased premises or utilizing the
leased equipment. Although the obligations may be secured by the leased
equipment or facilities, the disposition of the property in the event of
nonappropriation or foreclosure might prove difficult, time consuming and
costly, and result in an unsatisfactory or delayed recoupment of the Fund's
original investment.
 
  Certificates of participation represent undivided interests in municipal
leases, installment purchase agreements or other instruments. The certificates
are typically issued by a trust or other entity which has received an
assignment of the payments to be made by the state or political subdivision
under such leases or installment purchase agreements.
 
  Certain municipal lease obligations and certificates of participation may be
deemed illiquid for the purpose of the Fund's 15% limitation on investments in
illiquid securities. Other municipal lease obligations and certificates of
participation acquired by the Fund may be determined by the Investment
Adviser, pursuant to guidelines adopted by the Trustees of the Trust, to be
liquid securities for the purpose of such limitation. In determining the
liquidity of municipal lease obligations and certificates of participation,
the Investment Adviser will consider a variety of factors including: (1) the
willingness of dealers to bid for the security; (2) the number of dealers
willing to purchase or sell the obligation and the number of other potential
buyers; (3) the frequency of trades or quotes for the obligation; and (4) the
nature of the marketplace trades. In addition, the Investment Adviser will
consider factors unique to particular lease obligations and certificates of
participation affecting the marketability thereof. These include the general
creditworthiness of the issuer, the importance of the property covered by the
lease to the issuer and the likelihood that the marketability of the
obligation will be maintained throughout the time the obligation is held by
the Fund.
 
  The Fund may also purchase participations in Municipal Securities held by a
commercial bank or other financial institution. Such participations provide
the Fund with the right to a pro rata undivided interest in the underlying
Municipal Securities. In addition, such participations generally provide the
Fund with the right to demand payment, on not more than seven days notice, of
all or any part of the Fund's participation interest in the underlying
Municipal Security, plus accrued interest. These demand features will be taken
into consideration in determining the effective maturity of such
participations and the average portfolio duration of the Fund. The Fund will
only invest in such participations if, in the
 
                                      12
<PAGE>
 
opinion of bond counsel for the issuers or counsel selected by the Investment
Adviser, the interest from such participations is exempt from regular federal
income tax.
 
  MUNICIPAL NOTES. The Fund may invest in municipal notes. Municipal
Securities in the form of notes generally are used to provide for short-term
capital needs in anticipation of an issuer's receipt of other revenues or
financing, and typically have maturities of up to three years. Such
instruments may include Tax Anticipation Notes, Revenue Anticipation Notes,
Bond Anticipation Notes, Tax and Revenue Anticipation Notes and Construction
Loan Notes. Tax Anticipation Notes are issued to finance the working capital
needs of governments. Generally, they are issued in anticipation of various
tax revenues, such as income, sales, property, use and business taxes, and are
payable from these specific future taxes. Revenue Anticipation Notes are
issued in expectation of receipt of other kinds of revenue, such as federal
revenues available under Federal Revenue Sharing programs. Bond Anticipation
Notes are issued to provide interim financing until long-term bond financing
can be arranged. In most cases, the long-term bonds then provide the funds
needed for repayment of the Notes. Tax and Revenue Anticipation Notes combine
the funding sources of both Tax Anticipation Notes and Revenue Anticipation
Notes. Construction Loan Notes are sold to provide construction financing.
These notes are secured by mortgage notes insured by the Federal Housing
Authority; however, the proceeds from the issuance may be less than the
economic equivalent of the payment of principal and interest on the mortgage
note if there has been a default. The obligations of an issuer of municipal
notes are generally secured by the anticipated revenues from taxes, grants or
bond financing. An investment in such instruments, however, presents a risk
that the anticipated revenues will not be received or that such revenues will
be insufficient to satisfy the issuer's payment obligations under the notes or
that refinancing will be otherwise unavailable.
 
  TAX-EXEMPT COMMERCIAL PAPER. The Fund may invest in tax-exempt commercial
paper. Commercial paper is a type of short-term, unsecured, negotiable
promissory note. These obligations are issued by state and local governments
and their agencies to finance working capital needs of municipalities or to
provide interim construction financing and are paid from general revenues of
municipalities or are refinanced with long-term debt. In most cases, tax-
exempt commercial paper is backed by letters of credit, lending agreements,
note repurchase agreements or other credit facility agreements offered by
banks or other institutions.
 
  PRE-REFUNDED MUNICIPAL SECURITIES. The Fund may invest in pre-refunded
Municipal Securities. The principal of and interest on pre-refunded Municipal
Securities are no longer paid from the original revenue source for such
securities. Instead, the source of such payments is typically an escrow fund
consisting of obligations issued or guaranteed by the U.S. Government, its
agencies or instrumentalities. The assets in the escrow fund are derived from
the proceeds of refunding bonds issued by the same issuer as the pre-refunded
Municipal Securities, but usually on terms more favorable to the issuer.
Issuers of Municipal Securities use this advance refunding technique to obtain
more favorable terms with respect to Municipal Securities that are not yet
subject to call or redemption by the issuer. For example, advance refunding
enables an issuer to refinance debt at lower market interest rates,
restructure debt to improve cash flow or eliminate restrictive covenants in
the indenture or other governing instrument for the pre-refunded Municipal
Securities. However, except for a change in the revenue source from which
principal and interest payments are made, the pre-refunded Municipal
Securities remain outstanding on their original terms until they mature or are
redeemed by
 
                                      13
<PAGE>
 
the issuer. The effective maturity of pre-refunded Municipal Securities will
be the redemption date if the issuer has assumed an obligation or indicated
its intention to redeem such securities on the redemption date. Pre-refunded
Municipal Securities are usually purchased at a price which represents a
premium over their face value.
 
  VARIABLE AND FLOATING RATE SECURITIES. The interest rates payable on certain
securities in which the Fund may invest, which generally are expected to be
revenue obligations, are not fixed and may fluctuate based upon changes in
market rates. A variable rate obligation has an interest rate which is
adjusted at predesignated periods in response to changes in the market rate of
interest on which the obligation's interest rate is based. Unlike fixed rate
instruments, variable and floating rate obligations do not lock in a
particular yield in a changing interest rate environment. Nevertheless, such
obligations may fluctuate in value in response to interest rate changes if a
change in market interest rates does not coincide with the interest reset date
for an obligation. Variable or floating rate obligations generally permit the
holders of such obligations to demand payment of principal from the issuer or
a third party at any time or at stated intervals. The Fund will take demand
features into consideration in determining the average portfolio duration of
the Fund and the effective maturity of individual Municipal Securities. In
addition, the absence of an unconditional demand feature exercisable within
seven days, and the failure of the issuer or a third party to honor its
obligations under a demand or put feature will require a variable or floating
rate obligation to be treated as illiquid for purposes of the Fund's 15%
limitation on illiquid investments.
 
  TENDER OPTION BONDS. The Fund may invest in tender option bonds. A tender
option bond is a Municipal Security (generally held pursuant to a custodial
arrangement) having a relatively long maturity and bearing interest at a fixed
rate substantially higher than prevailing short-term tax-exempt rates. The
bond is typically issued in conjunction with the agreement of a third party,
such as a bank, broker-dealer or other financial institution which grants the
security holders the option, at periodic intervals, to tender their securities
to the institution and receive the face value thereof. As consideration for
providing the option, the financial institution receives periodic fees equal
to the difference between the bond's fixed coupon rate and the rate, as
determined by a remarketing or similar agent at or near the commencement of
such period, that would cause the securities, coupled with the tender option,
to trade at par on the date of such determination. Thus, after payment of this
fee, the security holder effectively holds a demand obligation that bears
interest at the prevailing short-term tax-exempt rate. However, an institution
will not be obligated to accept tendered bonds in the event of certain
defaults or a significant downgrading in the credit rating assigned to the
issuer of the bond. Although the Fund intends to invest in tender option bonds
the interest on which will, in the opinion of bond counsel for the issuer of
interests therein or counsel selected by the Investment Adviser, be exempt
from regular federal income tax, there is a risk that the Fund will not be
considered the owner of such tender option bonds and thus will not be entitled
to treat such interest as exempt from such tax.
 
  AUCTION RATE SECURITIES. The Fund may invest in auction rate securities.
Provided that the auction mechanism is successful, auction rate securities
permit the holder to sell the securities in an auction at par value at
specified intervals. The dividend or interest rate is reset by "Dutch" auction
in which bids are made by broker-dealers and other institutions for a certain
amount of securities at a specified minimum yield. The rate set by the auction
is the lowest interest or dividend rate that covers all
 
                                      14
<PAGE>
 
securities offered for sale. While this process is designed to permit auction
rate securities to be traded at par value, there is the risk that an auction
will fail due to insufficient demand for the securities. The Fund will take
the next scheduled auction date of auction rate securities into consideration
in determining the average portfolio maturity of the Fund.
 
  ZERO COUPON, DEFERRED INTEREST AND CAPITAL APPRECIATION BONDS. The Fund may
invest in zero coupon, deferred interest and capital appreciation bonds. Zero
coupon, deferred interest and capital appreciation bonds are debt securities
issued or sold at a discount from their face value that do not entitle the
holder to any payment of interest prior to maturity or a specified
commencement or redemption date (or cash payment date). The amount of the
discount varies depending on the time remaining until maturity or cash payment
date, prevailing interest rates, the liquidity of the security and the
perceived credit quality of the issuer. These securities also may take the
form of debt securities that have been stripped of their unmatured interest
coupons, the coupons themselves or receipts or certificates representing
interests in such stripped debt obligations or coupons. A portion of the
discount with respect to stripped tax-exempt securities or their coupons may
be taxable. The market prices of zero coupon, deferred interest and capital
appreciation bonds generally are more volatile than the market prices of
interest-bearing securities and are likely to respond to a greater degree to
changes in interest rates than interest-bearing securities having similar
maturities and credit quality. The Fund's investments in zero coupon, deferred
interest and capital appreciation bonds or stripped securities may require the
Fund to sell certain of its portfolio securities to generate sufficient cash
to satisfy certain income distribution requirements. See "Taxation" in the
Additional Statement.
 
  INSURED BONDS. The Fund may invest in "insured" Municipal Securities.
Insured Municipal Securities are those for which scheduled payments of
interest and principal are guaranteed by a private (nongovernmental) insurance
company. The insurance only entitles the Fund to receive the face or par value
of the securities held by the Fund. The insurance does not guarantee the
market value of the Municipal Securities or the value of the shares of the
Fund.
 
  INVERSE FLOATING RATE INSTRUMENTS. The Fund may invest in "leveraged"
inverse floating rate debt instruments ("inverse floaters"). Investments in
inverse floaters will not exceed 25% of the Fund's net assets. The interest
rate on an inverse floater resets in the opposite direction from the market
rate of interest to which the inverse floater is indexed. An inverse floater
may be considered to be leveraged to the extent that its interest rate varies
by a magnitude that exceeds the magnitude of the change in the index rate of
interest. The higher the degree of leverage of an inverse floater the greater
the volatility of its market value.
 
                        OTHER INVESTMENTS AND PRACTICES
 
  WHEN-ISSUED AND FORWARD COMMITMENT SECURITIES. The Fund may purchase
securities on a when-issued basis. When-issued transactions arise when
securities are purchased by the Fund with payment and delivery taking place in
the future in order to secure what is considered to be an advantageous price
and yield to the Fund at the time of entering into the transaction. The Fund
may also purchase securities on a forward commitment basis. In a forward
commitment transaction, the Fund contracts to purchase securities for a fixed
price at a future date beyond the customary settlement time. The Fund is
required to hold and maintain in a segregated account until the settlement
date, cash or liquid, high-grade debt obligations in an amount sufficient to
meet the purchase price.
 
                                      15
<PAGE>
 
Alternatively, the Fund may enter into offsetting contracts for the forward
sale of other securities that it owns. The purchase of securities on a when-
issued or forward commitment basis involves a risk of loss if the value of the
security to be purchased declines prior to the settlement date. Although the
Fund will generally purchase securities on a when-issued or forward commitment
basis with the intention of actually acquiring securities for its portfolio,
the Fund may dispose of a when-issued security or forward commitment prior to
settlement if the Investment Adviser deems it appropriate to do so.
 
  REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with
dealers in U.S. Government securities and member banks of the Federal Reserve
System which furnish collateral at least equal in value or market price to the
amount of their repurchase obligation. In a repurchase agreement, the Fund
purchases a debt security from a seller which undertakes to repurchase the
security at a specified resale price on an agreed future date (ordinarily a
week or less). The resale price generally exceeds the purchase price by an
amount which reflects an agreed-upon market interest rate for the term of the
repurchase agreement. The primary risk is that, if the seller defaults, the
Fund might suffer a loss to the extent that the proceeds from the sale of the
underlying securities and other collateral held by the Fund in connection with
the related repurchase agreement are less than the repurchase price.
Repurchase agreements maturing in more than seven days are considered by the
Fund to be illiquid. In addition, the Fund, together with other registered
investment companies having advisory agreements with the Investment Adviser or
any of its affiliates, may transfer uninvested cash balances into a single
joint account, the daily aggregate balance of which will be invested in one or
more repurchase agreements.
 
  ILLIQUID SECURITIES. The Fund will not invest more than 15% of the value of
its net assets in securities which are illiquid, including repurchase
agreements providing for settlement in more than seven days after notice,
interest rate swaps, caps, floors and collars, certain over-the-counter
options, certain municipal leases and participations in Municipal Securities
which do not include a right to demand payment of the Fund's interest in the
underlying Municipal Securities and securities offered in the United States
that are restricted as to resale. However, a restricted security is not
considered to be illiquid if the Trustees of the Trust determine, based upon
the Investment Adviser's continuing review of the trading markets for the
specific restricted security under guidelines adopted by the Trustees of the
Trust and subject to the Trustees' oversight and ultimate responsibility, that
such restricted security eligible for resale in accordance with Rule 144A
under the Securities Act of 1933 is liquid. In addition, a repurchase
agreement which by its terms can be liquidated before its nominal fixed term
on seven days or less notice is regarded as a liquid instrument. Subject to
the limitations described above, the Fund may acquire Municipal Securities or
illiquid securities in a private placement.
 
  Since it is not possible to predict with assurance exactly how this market
for restricted securities sold and offered under Rule 144A will develop, the
Board of Trustees will carefully monitor the Fund's investment in these
securities, focusing on such important factors, among others, as valuation,
credit quality, liquidity and availability of information. This investment
practice could have the effect of increasing the level of illiquidity in the
Fund to the extent that qualified institutional buyers become for a time
uninterested in purchasing these restricted securities.
 
                                      16
<PAGE>
 
INTEREST RATE SWAPS, CAPS, FLOORS AND COLLARS
 
  The Fund may enter into interest rate swaps for hedging purposes and to
increase total return. The Fund may also enter into other types of interest
rate swap agreements such as caps, floors and collars. Interest rate swaps
involve the exchange by the Fund with another party of their respective
commitments to pay or receive interest, such as an exchange of fixed rate
payments for floating rate payments. The purchase of an interest rate cap
entitles the purchaser, to the extent that a specified index exceeds a
predetermined interest rate, to receive payment of interest on a notional
principal amount from the party selling such interest rate cap. The purchase
of an interest rate floor entitles the purchaser, to the extent that a
specified index falls below a predetermined interest rate, to receive payments
of interest on a notional principal amount from the party selling the interest
rate floor. An interest rate collar is the combination of a cap and a floor
that preserves a certain return within a predetermined range of interest
rates. Since interest rate swaps, caps, floors and collars are individually
negotiated, the Fund expects to achieve an acceptable degree of correlation
between its portfolio investments and its swap, cap, floor or collar positions
entered into for hedging purposes.
 
  The Fund will enter into interest rate swaps only on a net basis, which
means that the two payment streams are netted out, with the Fund receiving or
paying, as the case may be, only the net amount of the two payments. The Fund
will maintain in a segregated account with the Fund's custodian cash and
liquid, high grade debt securities equal to the net amount, if any, of the
excess of the Fund's obligations over its entitlements with respect to swap
transactions. Interest rate swaps do not involve the delivery of securities,
other underlying assets or principal. Accordingly, the risk of loss with
respect to interest rate swaps is limited to the net amount of interest
payments that the Fund is contractually obligated to make. If the other party
to an interest rate swap defaults, the Fund's risk of loss consists of the net
amount of interest payments that the Fund is contractually entitled to
receive. To the extent that the net amount of an interest rate swap is held in
a segregated account consisting of cash and liquid, high grade debt
securities, the Fund and the Investment Adviser believe that interest rate
swaps do not constitute senior securities under the Investment Company Act of
1940, as amended (the "Act") and, accordingly, will not treat them as being
subject to the Fund's borrowing restriction.
 
  The Fund will not enter into any interest rate swap, cap, floor or collar
transactions unless the unsecured commercial paper, senior debt or claims
paying ability of the other party is rated either AA or A-1 or better by
Standard & Poor's or Aa or P-1 or better by Moody's or, if unrated by such
rating organizations, determined to be of comparable quality by the Investment
Adviser.
 
  The use of interest rate swaps, caps, floors and collars is a highly
specialized activity which involves investment techniques and risks different
from those associated with ordinary portfolio securities transactions. If the
Investment Adviser is incorrect in its forecasts of market values and interest
rates, the investment performance of the Fund would be less favorable than it
would have been if these investment techniques were not used. The staff of the
SEC currently takes the position that swaps, caps, floors and collars are
illiquid and thus subject to the Fund's 15% limitation on illiquid securities.
 
OPTIONS ON SECURITIES AND SECURITIES INDICES
 
  WRITING COVERED OPTIONS. The Fund may write (sell) covered call and put
options on any securities in which it may invest. All call options written by
the Fund are covered, which means that the
 
                                      17
<PAGE>
 
Fund will own the securities subject to the option so long as the option is
outstanding. All put options written by the Fund are covered, which means that
the Fund would have deposited with its custodian cash and liquid, high grade
debt securities with a value equal to the exercise price of the put option.
Call and put options written by the Fund will also be considered to be covered
to the extent that the Fund's liabilities under such options are wholly or
partially offset by its rights under call and put options purchased by the
Fund. The Fund may also write call and put options on a securities index
composed of securities in which it may invest. In addition, the Fund may
purchase put and call options on any securities in which it may invest or
options on any securities index composed of securities in which it may invest.
 
  The writing and purchase of options is a highly specialized activity which
involves investment techniques and risks different from those associated with
ordinary portfolio securities transactions. The use of options to increase
total return involves the risk of loss if the Investment Adviser is incorrect
in its expectation of fluctuations in securities prices or interest rates. The
successful use of puts for hedging purposes depends in part on the ability of
the Investment Adviser to predict future price fluctuations and the degree of
correlation between the options and securities markets. If the Investment
Adviser is incorrect in its determination of the correlation between the
securities or indices on which the options are written and purchased and the
securities in the Fund's investment portfolio, the investment performance of
the Fund will be less favorable than it would have been in the absence of such
option transactions. The writing of options could significantly increase the
Fund's portfolio turnover rate and, therefore, associated brokerage
commissions or spreads.
 
  FUTURES CONTRACTS AND RELATED OPTIONS. To hedge against changes in interest
rates or securities prices or to seek to increase total return, the Fund may
purchase and sell various kinds of futures contracts and purchase and write
call and put options on any of such futures contracts. The Fund may also enter
into closing purchase and sale transactions with respect to any of such
contracts and options. The futures contracts may be based on various
securities (such as U.S. Government securities), securities indices and other
financial instrument and indices. The Fund will engage in futures or related
option transactions only for bona fide hedging purposes as defined in
regulations of the Commodity Futures Trading Commission or to seek to increase
total return to the extent permitted by such regulations.
 
  The Fund may not purchase or sell futures contracts or purchase or sell
related options to increase total return, except for closing purchase or sale
transactions, if immediately thereafter the sum of the amount of initial
margin deposits and premiums paid on the Fund's outstanding positions in
futures and related options entered into for the purpose of seeking to
increase total return would exceed 5% of the market value of the Fund's net
assets. Transactions in futures contracts and options on futures involve
brokerage costs, require margin deposits and, in the case of contracts and
options obligating the Fund to purchase securities, require the Fund to
segregate cash and liquid, high grade debt securities with a value equal to
the amount of the Fund's obligations.
 
  While transactions in futures contracts and options on futures may reduce
certain risks, such transactions themselves entail certain other risks. See
"Investment Objectives and Policies -- Futures Contracts and Related Options"
in the Additional Statement. Thus, while the Fund may benefit from the use of
futures and options on futures, unanticipated changes in interest rates may
result in a poorer overall performance for the Fund than if it had not entered
into any futures contracts or options
 
                                      18
<PAGE>
 
transactions. The loss incurred by the Fund in writing options on futures is
potentially unlimited and may exceed the amount of the premium received.
 
  The use of futures may increase the volatility of the Fund's net asset
value. The profitability of the Fund's trading in futures to increase total
return will depend on the Investment Adviser's ability to correctly analyze
the futures markets. In addition, because of the low margin deposits normally
required in futures trading, a relatively small price movement in a futures
contract may result in substantial losses to the Fund. Further, futures
trading may be illiquid, and exchanges may limit fluctuations in futures
contract prices during a single day.
 
  In the event of an imperfect correlation between a futures position and a
portfolio position which is intended to be protected, the desired protection
may not be obtained and the Fund may be exposed to risk of loss. Perfect
correlation between the Fund's futures positions and portfolio positions will
be impossible to achieve. The Fund's transactions in options and futures
contracts may be limited by the requirements of the Code for qualification as
a regulated investment company.
 
  LENDING OF PORTFOLIO SECURITIES. The Fund may also seek to increase its
income by lending portfolio securities. Under present regulatory policies,
such loans may be made to institutions, such as certain broker-dealers, and
are required to be secured continuously by collateral in cash, cash
equivalents or U.S. Government securities maintained on a current basis in an
amount at least equal to the market value of the securities loaned. Cash
collateral may be invested in cash equivalents. If the Investment Adviser
determines to make securities loans, the value of the securities loaned may
not exceed 33 1/3% of the value of the total assets of the Fund. See
"Investment Restrictions" in the Additional Statement. The Fund may experience
a loss or delay in the recovery of its securities if the institution with
which it has engaged in a portfolio loan transaction breaches its agreement
with the Fund.
 
  OTHER INVESTMENT COMPANIES. The Fund reserves the right to invest up to 10%
of its total assets, calculated at the time of purchase, in the securities of
other investment companies including business development companies and small
business investment companies. The Fund may not invest more than 5% of its
total assets in the securities of any one investment company or acquire more
than 3% of the voting securities of any other investment company. Pursuant to
an exemptive order obtained from the SEC, other investment companies in which
the Fund may invest include money market funds for which the Investment
Adviser or any of its affiliates serves as investment adviser. The Fund will
indirectly bear its proportionate share of any management fees and other
expenses paid by investment companies in which it invests in addition to the
advisory fees paid by the Fund. However, to the extent that the Fund invests
in a money market fund for which the Investment Adviser or any of its
affiliates acts as adviser, the advisory fees payable by the Fund to the
Investment Adviser will be reduced by an amount equal to the Fund's
proportionate share of the advisory fees paid by such money market fund to the
Investment Adviser or any of its affiliates.
 
                                 RISK FACTORS
 
  An investment in the Fund presents certain risk factors, in addition to
those described above, including the following:
 
  NET ASSET VALUE VOLATILITY. The net asset value of the Fund's shares will
change with changes in the value of its portfolio securities. Because, under
normal market conditions, the Fund invests
 
                                      19
<PAGE>
 
primarily in fixed income Municipal Securities, the net asset value of the
shares of the Fund can be expected to change as general levels of interest
rates fluctuate. Volatility may be greater during periods of general economic
uncertainty and interest rate fluctuation. The volatility of Municipal
Securities may differ from that of other fixed income securities.
 
  YIELDS AND MARKET VALUES OF MUNICIPAL SECURITIES. The yields and market
values of Municipal Securities are determined primarily by the general level
of interest rates, the supply of and demand for Municipal Securities, the
creditworthiness of the issuers of Municipal Securities and economic and
political conditions affecting such issuers. Due to their tax-exempt status,
the yields and market values of Municipal Securities may be adversely affected
by certain factors, such as changes in tax rates and policies, which may have
less of an effect on the taxable fixed income markets. In addition, the yields
of short or intermediate term Municipal Securities are generally more volatile
than the yields of longer term Municipal Securities. Moreover, certain types
of Municipal Securities, such as housing revenue bonds, which are based on
mortgage revenues, involve prepayment risks which could affect the yields of
such Municipal Securities.
 
  When interest rates decline, the value of a portfolio of Municipal
Securities (with the exception of variable and floating rate securities) can
be expected to rise. Conversely, when interest rates rise, the value of a
portfolio of Municipal Securities can be expected to decline. In general, the
yields on short and intermediate term Municipal Securities are lower than the
yields on long term Municipal Securities. Because of the shorter maturities of
short and intermediate term Municipal Securities, however, the market values
of such Municipal Securities can be expected to fluctuate to a lesser extent
as a result of changes in interest rates. Nevertheless, a sudden and extreme
increase in interest rates may cause a decline in the Fund's net asset value,
while a sudden and extreme decline in interest rates could result in an
increase in the Fund's net asset value.
 
  The ability of the Fund to achieve its investment objective will therefore
depend in part on the extent to which the Fund is able to anticipate and
respond to fluctuations in market interest rates and to utilize appropriate
strategies to maximize returns to the Fund, while attempting to minimize the
associated risks to its invested capital. While short or intermediate term
Municipal Securities are generally less susceptible to fluctuations in value
as a result of changes in interest rates (as compared to longer term Municipal
Securities), certain types of instruments in which the Fund will invest, such
as zero coupon bonds, deferred interest and capital appreciation bonds, are
more susceptible to fluctuations as a result of movements in interest rates.
As a result, a sudden and extreme rise in interest rates could result in a
substantial decline in the value of such portfolio securities. The ability of
the Fund to achieve, in accordance with its investment objective, relatively
low volatility of principal therefore depends in part on the extent to which
the Fund is able to anticipate and respond to fluctuations in market interest
rates and to utilize appropriate strategies to maximize returns to the Fund.
 
  DEFAULT RISK. Investments in Municipal Securities, including both general
obligations and revenue obligations, are subject to the risk that the issuer
could default on its obligations, and the Fund could sustain losses on such
investments. Such a default could result from the inadequacy of the sources or
revenues from which interest and principal payments are to be made or the
assets collateralizing such obligations. Revenue obligations, including
private activity bonds, municipal leases,
 
                                      20
<PAGE>
 
certificates of participation and certain other types of instruments in which
the Fund may invest, are backed only by specific assets or revenue sources and
not by the full faith and credit of the governmental issuer.
 
  TAX CONSEQUENCES. While the Fund will, under normal market conditions,
invest substantially all of its assets in Municipal Securities, the
recognition of accrued market discount income (if the Fund acquires Municipal
Securities or other obligations at a market discount) and income and/or
capital gains from certain types of instruments in which the Fund is permitted
to invest, including U.S. Government securities, options and futures
contracts, interest rate swaps, caps, floors and collars, securities loans,
the disposition of when-issued securities or forward commitments prior to
settlement and repurchase agreements, will result in taxable income,
distributions of which will be taxable to shareholders. In addition, the
Fund's investments in private activity bonds subject to the federal
alternative minimum tax could result in income the distribution of which could
cause or increase alternative minimum tax liability for some shareholders. The
Fund may also generate capital gains from the disposition of its investments
and its distributions of such capital gains will be taxable to shareholders.
Shareholders may be subject to state, local or foreign taxes on certain income
received from the Fund. See "Taxation."
 
  Because interest income from Municipal Securities is not subject to regular
federal income taxation, the attractiveness of Municipal Securities in
relation to other investment alternatives will be affected by any changes in
federal income tax rates applicable to, or the continuing federal income tax-
exempt status of, such interest income. Any proposed or actual changes in such
rates or exempt status, therefore, can significantly affect both the supply of
and demand for Municipal Securities, which could in turn affect the Fund's
ability to acquire and dispose of Municipal Securities at desirable yield and
price levels.
 
  CALL RISK AND REINVESTMENT RISK. The Municipal Securities in which the Fund
will invest may include "call" provisions which permit the issuers of such
securities, at any time or after a specified period, to redeem the securities
prior to their stated maturity. In the event that Municipal Securities held in
the Fund's portfolio are called prior to maturity, the Fund will be required
to reinvest the proceeds received on such securities at an earlier date and
may be able to do so only at lower yields, thereby reducing the Fund's return
on its portfolio securities. There is a risk that the proceeds of housing
revenue bonds will be in excess of demand for mortgages which would result in
early retirement of the bonds by the issuer. Moreover, such housing revenue
bonds depend for their repayment upon the cash flow from the underlying
mortgages, which cannot be precisely predicted when the bonds are issued. Any
difference in the actual cash flow from such mortgages from the assumed cash
flow could have an adverse impact upon the ability of the issuer to make
scheduled payments of principal and interest on the bonds, or could result in
early retirement of the bonds.
 
  COUNTERPARTY CREDIT RISK. When the Fund enters into certain transactions,
including repurchase agreements, stand-by commitments (described in the
Additional Statement), over-the-counter options, interest rate swaps, caps,
floors and collars and securities lending transactions, it assumes the risk
that its counterparty will default on its obligations to the Fund, which could
result in losses.
 
  RISKS OF DERIVATIVE TRANSACTIONS. The Fund's transactions in interest rate
swaps, caps, floors and collars, futures and options, involve certain risks,
including a possible lack of correlation between
 
                                      21
<PAGE>
 
changes in the value of the hedging instruments and the portfolio assets being
hedged, the potential illiquidity of the markets for derivative instruments
and the risks arising from the margin requirements and related leverage
factors associated with such transactions. The use of these management
techniques to seek to increase total return also involves the risk of loss if
the Investment Adviser is incorrect in its expectation of fluctuations in
securities prices and interest rates.
 
                            INVESTMENT RESTRICTIONS
 
  The Fund is subject to certain investment restrictions which, as described
in more detail in the Additional Statement, are fundamental policies that
cannot be changed without the approval of a majority of the outstanding shares
of the Fund. Among other restrictions, the Fund may not, with respect to 75%
of its total assets, purchase securities of any one issuer (other than
securities issued or guaranteed by the U.S. Government, its agencies or
instrumentalities) if more than 5% of its total assets would be invested in
such issuer. Less than 25% of the Fund's total assets may be invested in the
securities of issuers in any one industry. For the purposes of this
restriction, state and municipal governments and their agencies and
instrumentalities are not deemed to be industries with respect to tax-exempt
securities of these issuers. Thus, the Fund may invest 25% or more of the
value of its total assets in Municipal Securities which are related in such a
way that an economic, business or political development or change affecting
one Municipal Security would also affect the other Municipal Securities. For
example, the Fund may so invest in (a) Municipal Securities the interest on
which is paid solely from revenues of similar projects such as hospitals,
electric utility systems, multi-family housing, nursing homes, commercial
facilities (including hotels), steel companies or life care facilities, (b)
Municipal Securities whose issuers are in the same state, or (c) industrial
development obligations. The Fund may not borrow money, except from banks for
temporary or short-term purposes, in connection with redemptions and failed
settlements and to finance certain additional purchases of securities,
provided that the Fund maintains asset coverage of 300% for all such
borrowings. As a matter of non-fundamental policy, the Fund may not purchase
securities while such borrowings exceeds 5% of the value of the Fund's total
assets.
 
                              PORTFOLIO TURNOVER
 
  The Fund may engage in active short-term trading to benefit from yield
disparities among different issues of Municipal Securities, to seek short-term
profits during periods of fluctuating interest rates or for other reasons.
Such trading will increase the Fund's portfolio turnover rate and may
therefore increase the incidence of short-term capital gain (distributions of
which are taxable to shareholders as ordinary income). A high rate of
portfolio turnover (100% or higher) involves correspondingly greater expenses
which must be borne by the Fund and its shareholders and may under certain
circumstances make it more difficult for the Fund to qualify as a regulated
investment company under the Internal Revenue Code. The portfolio turnover
rate is calculated by dividing the lesser of the dollar amount of sales or
purchases of portfolio securities by the average monthly value of the Fund's
portfolio securities, excluding securities having a maturity at the date of
purchase of one year or less.
 
                                  MANAGEMENT
 
TRUSTEES AND OFFICERS
 
  The Trust's Board of Trustees is responsible for deciding matters of general
policy and reviewing the actions of the Investment Adviser, distributor and
transfer agent. The officers of the Trust conduct
 
                                      22
<PAGE>
 
and supervise the Fund's daily business operations. The Additional Statement
contains information as to the identity of, and other information about, the
Trustees and officers of the Trust.
 
INVESTMENT ADVISER
 
  Goldman Sachs Asset Management, One New York Plaza, New York, New York
10004, a separate operating division of Goldman Sachs, acts as the investment
adviser of the Fund. Goldman Sachs was registered as an investment adviser in
1981. As of January 31, 1995, the Investment Adviser, together with its
affiliates, acted as investment adviser, administrator or distributor for
approximately $48.7 billion in assets.
 
  Under its Investment Advisory Agreement with the Fund, Goldman Sachs Asset
Management, subject to the general supervision of the Board of Trustees,
manages the Fund's portfolio and provides for the administration of all of the
Fund's other affairs. It is the responsibility of the Investment Adviser to
make investment decisions for the Fund and to place purchase and sale orders
for the Fund's portfolio transactions. Such orders may be directed to any
broker including, to the extent and in the manner permitted by applicable law,
Goldman Sachs or its affiliates. Goldman Sachs has agreed to permit the Fund
to use the name "Goldman Sachs" or a derivative thereof as part of the Fund's
name for as long as the Investment Advisory Agreement is in effect.
 
  The Fund's portfolio managers are Mark Muller and Theodore T. Sotir. Mr.
Muller joined Goldman Sachs Asset Management in 1991 and is currently a Vice
President. Prior to 1991, he was a senior portfolio manager for Van Kampen
Meritt Investment Advisory Corporation, where he was responsible for actively
managing a wide variety of municipal securities portfolios. Mr. Sotir helps
with overall portfolio strategy and is a member of the Investment Adviser's
risk control team. Mr. Sotir is a Vice President of Goldman Sachs and joined
Goldman Sachs Asset Management in 1993 after working as a portfolio manager at
Fidelity Management Trust Company. Prior to joining Fidelity, Mr. Sotir worked
for Goldman Sachs in the mortgage securities department for six years.
 
  As compensation for the services rendered to the Fund by the Investment
Adviser pursuant to the Investment Advisory Agreement, and the assumption by
the Investment Adviser of the expenses related thereto, the Fund pays the
Investment Adviser a fee, computed daily and payable monthly, at an annual
rate equal to 0.40% of the Fund's average daily net assets. For the fiscal
year ended October 31, 1994, the Fund paid an advisory fee to the Investment
Adviser equal on an annual basis to 0.40% of the Fund's average daily net
assets.
 
  The Investment Adviser has voluntarily agreed to reduce or otherwise limit
certain expenses of the Fund (excluding advisory fees, payments to Service
Organizations (as defined below), taxes, interest and brokerage and
litigation, indemnification and other extraordinary expenses) to the extent
such expenses exceed 0.05% annually of the Fund's average net assets. Such
reductions or limits, if any, are calculated monthly on a cumulative basis and
may be discontinued or modified by the Investment Adviser at its discretion at
any time. The Investment Adviser has also agreed to reduce its fees payable
(to the extent of such fees) by the amount the Fund's expenses would, absent
the fee reduction, exceed the applicable expense limitations imposed by state
securities administrators. See "Management -- Expenses" in the Additional
Statement.
 
                                      23
<PAGE>
 
  ACTIVITIES OF GOLDMAN SACHS AND ITS AFFILIATES AND OTHER ACCOUNTS MANAGED BY
GOLDMAN SACHS. The involvement of the Investment Adviser and Goldman Sachs and
their affiliates in the management of, or their interest in, other accounts
and other activities of Goldman Sachs may present conflicts of interest with
respect to the Fund or limit its investment activities. Goldman Sachs and its
affiliates engage in proprietary trading and advise accounts and funds which
have Investment objectives similar to those of the Fund and/or which engage in
and compete for transactions in the same types of securities, and instruments
as the Fund. Goldman Sachs and its affiliates will not have any obligation to
make available any information regarding their proprietary activities or
strategies, or the activities or strategies used for other accounts managed by
them, for the benefit of the management of the Fund and it is not anticipated
that the Investment Adviser will have access to proprietary information for
the purpose of managing the Fund. The results of the Fund's investment
activities, therefore, may differ from those of Goldman Sachs and its
affiliates and it is possible that the Fund could sustain losses during
periods in which Goldman Sachs and its affiliates and other accounts achieve
significant profits on their trading for proprietary or other accounts. From
time to time, the Fund's activities may be limited because of regulatory
restrictions applicable to Goldman Sachs and its affiliates, and/or their
internal policies designed to comply with such restrictions. See "Activities
of Goldman Sachs and its Affiliates and Other Accounts Managed by Goldman
Sachs" in the Additional Statement for further information.
 
DISTRIBUTOR AND TRANSFER AGENT
 
  Goldman Sachs, 85 Broad Street, New York, New York, serves as the exclusive
distributor of the Fund's shares. Goldman Sachs, 4900 Sears Tower, Chicago,
Illinois, also serves as the Fund's transfer agent (the "Transfer Agent").
Shareholders of record with inquiries regarding the Fund should contact
Goldman Sachs as Transfer Agent at the address or the telephone number set
forth on the inside front cover page of this Prospectus.
 
                                   DIVIDENDS
 
  The Fund intends to declare a daily dividend determined with the objective
of distributing the majority of net investment income while enhancing the
stability of principal. Such dividend will accrue to shareholders of record as
of 3:00 p.m. Chicago time, and will be paid monthly. Over the course of the
fiscal year, dividends accrued and paid will constitute all or substantially
all of the Fund's net investment income. From time to time a portion of such
dividends may constitute an economic return of capital, a portion of which may
nevertheless be taxable as ordinary income. The Fund also intends that all net
realized long-term and short-term capital gains will be declared as a dividend
at least annually. In determining amounts of capital gains to be distributed,
capital losses including any available capital loss carryovers from prior
years will be offset against capital gains realized.
 
  The Fund's net investment income is determined on a daily basis. On days on
which net asset value is calculated, such determination is made immediately
prior to the calculation of the Fund's net asset value as of 3:00 p.m. Chicago
time. On days on which net asset value is not calculated, such determination
is made as of 3:00 p.m. Chicago time.
 
 
                                      24
<PAGE>
 
  Payment of dividends from net investment income will be made on the last
calendar day of each month in additional shares of the Fund at the net asset
value on such day, unless cash distributions are elected, in which case
payment will be made on the first Business Day of the succeeding month.
Payment of dividends with respect to capital gains, if any, when declared will
be made in additional shares of the Fund at the net asset value on the payment
date, unless cash distributions are elected. This election to receive
dividends in cash is initially made on the Account Information Form and may be
changed upon written notice to the Transfer Agent at any time prior to the
record date for a particular dividend or distribution. If cash dividends are
elected with respect to the Fund's monthly net investment income dividends,
then cash dividends must also be elected with respect to the non-long term
capital gains component, if any, of the Fund's annual dividend.
 
  At the time of an investor's purchase of shares of the Fund a portion of the
net asset value per share may be represented by undistributed income of the
Fund or unrealized appreciation of the Fund's portfolio securities. Therefore,
subsequent distributions (or portions thereof) of taxable income or realized
appreciation on such shares may be taxable to the investor even if the net
asset value of the shares is, as a result of the distributions, reduced below
the cost of such shares and the distributions (or portions thereof) represent
a return of a portion of the purchase price.
 
                                NET ASSET VALUE
 
  The net asset value per share is calculated by the Fund's custodian as of
the close of regular trading on the New York Stock Exchange (normally 3:00
p.m. Chicago time, 4:00 p.m. New York time), immediately after determination
of the income to be declared as a dividend on each Business Day (as such term
is defined under "Additional Information"). Net asset value per share of each
class is calculated by determining the net assets attributable to each class
and dividing by the number of outstanding shares of that class.
 
  Portfolio securities are valued based on market quotations or, if accurate
quotations are not readily available, at fair value as determined in good
faith under procedures established by the Trust's Board of Trustees.
 
                            PERFORMANCE INFORMATION
 
  From time to time the Fund may publish yield, tax equivalent yield and
average annual total return in advertisements and communications to
shareholders or prospective investors.
 
  Yield is computed by dividing net investment income earned during a recent
thirty-day period by the product of the average daily number of shares
outstanding and entitled to receive dividends during the period and the net
asset value per share on the last day of the relevant period. The results are
compounded on a bond equivalent (semi-annual) basis and then annualized. Net
investment income per share is equal to the dividends and interest earned
during the period, reduced by accrued expenses for the period. The calculation
of net investment income for these purposes may differ from the net investment
income determined for accounting purposes.
 
  Tax equivalent yield represents the yield an investor would have to earn to
equal, after taxes, the Fund's tax-free yield. Tax equivalent yield is
calculated by dividing the Fund's tax-exempt yield by one minus a stated
federal and/or state tax rate.
 
 
                                      25
<PAGE>
 
  Average annual total return is determined by computing the average annual
percentage change in value of $1,000 invested at the maximum public offering
price (i.e., net asset value) for specified periods ending with the most
recent calendar quarter, assuming reinvestment of all dividends and
distributions at net asset value. The total return calculation assumes a
complete redemption of the investment at the end of the relevant period. The
Fund may also from time to time advertise total return on a cumulative,
average, year-by-year or other basis for various specified periods by means of
quotations, charts, graphs or schedules. In addition to the above, the Fund
may from time to time advertise its performance relative to certain
performance rankings and indices.
 
  Quotations of distribution rates are calculated by annualizing the most
recent distribution of net investment income for a monthly, quarterly or other
relevant period and dividing this amount by the ending net asset value for the
period for which the distribution rates are being calculated.
 
  The investment results of the Fund will fluctuate over time and any
presentation of investment results for any prior period should not be
considered a representation of what an investment may earn or what the Fund's
performance may be in any future period. In addition to information provided
in shareholder reports, the Fund may, in its discretion, from time to time
make a list of its holdings available to investors upon request.
 
  Yield, total return and distribution rate will be calculated separately for
each class of shares in existence. Because each class of shares may be subject
to different expenses, the yield, total return and distribution rate
calculations with respect to each class of shares of the Fund for the same
period will differ. Due to the fees payable under the Service Plan and the
Administration Plan, the investment performance, for any period, of the
Institutional Shares will always be higher than that of the Service Shares and
the Administration Shares and the investment performance of the Administration
Shares will always be higher than that of the Service Shares. See "Shares of
the Trust" below.
 
                              SHARES OF THE TRUST
 
  The Fund is a series of Goldman Sachs Trust, which was organized under the
laws of The Commonwealth of Massachusetts on September 24, 1987 as a
Massachusetts business trust under an Agreement and Declaration of Trust, as
amended (the "Trust Agreement"). Under the Trust Agreement the Trustees are
authorized to issue an unlimited number of shares of beneficial interest,
$.001 par value per share. The Trustees of the Trust are responsible for the
overall management and supervision of its affairs. The Trustees of the Trust
have authority under the Trust Agreement to create and classify shares of
beneficial interest in separate series, without further action by
shareholders. As of the date of this Prospectus, the Trustees have authorized
shares of the Fund and ten other series. Additional series may be added in the
future. The Trustees also have authority to classify or reclassify any series
or portfolio of shares into one or more classes. Pursuant thereto, the
Trustees have authorized the issuance of three classes of the Fund. These
classes are: Institutional Shares, Administration Shares and Service Shares.
 
  Each Institutional Share, Administration Share and Service Share of the Fund
represents an equal proportionate interest in the assets belonging to the
Fund. All Fund expenses are based on a percentage of the Fund's aggregate
average net assets, except that the respective account administration and
service fees relating to a particular class will be borne exclusively by that
class. It is contemplated that most Administration Shares and Service Shares
will be held in accounts of which
 
                                      26
<PAGE>
 
the record owner is a bank or other institution acting, directly or through an
agent, as nominee for its customers who are the beneficial owners of the
shares or another organization designated by such bank or institution.
Administration Shares and Service Shares will each be marketed only to such
institutional investors, at net asset value with no sales load. Institutional
Shares may be purchased for accounts in the name of an investor or institution
that is not compensated by the Fund for services provided to the institution's
customers. Administration Shares may be purchased for accounts held in the
name of an institution that provides certain account administration services
to its customers, including maintenance of account records and processing
orders to purchase, redeem or exchange Administration Shares. Administration
Shares bear the cost of account administration fees at the annual rate of up
to 0.25% of the average daily net assets of such Administration Shares.
Service Shares may be purchased for accounts held in the name of an
institution that provides certain account administration and shareholder
liaison services to its customers, including maintenance of account records
and processing orders to purchase, redeem or exchange Service Shares,
responding to customer inquiries and assisting customers with investment
procedures. Service Shares bear the cost of service fees at the annual rate of
up to 0.50% of the average daily net assets of such Service Shares.
(Institutions that provide services to holders of Administration or Service
Shares are referred to in this Prospectus as "Service Organizations").
 
  It is possible that an institution or its affiliate may offer different
classes of shares (i.e., Institutional, Administration and Service Shares) to
its customers and thus receive different compensation with respect to
different classes of shares of the Fund. Administration Shares and Service
Shares may each have certain exclusive voting rights on matters relating to
their respective plans. Shares of each class may be exchanged only for shares
of the same class in another fund and certain money market funds sponsored by
Goldman Sachs. The Fund may amend such policy in the future. Dividends paid by
the Fund, if any, with respect to each class of shares will be calculated in
the same manner, at the same time and on the same day and will be in the same
amount, except for differences caused by the fact that the respective account
administration and service fees relating to a particular class will be borne
exclusively by that class. Similarly, the net asset value per share will vary
depending on the class of shares purchased.
 
  Certain aspects of the shares may be altered, after advance notice to
shareholders, if it is deemed necessary in order to satisfy certain tax
regulatory requirements.
 
  When issued, shares are fully paid and non-assessable. In the event of
liquidation, shareholders are entitled to share pro rata in the net assets of
the Fund available for distribution to such shareholders. All shares entitle
their holders to one vote per share, are freely transferable and have no
preemptive, subscription or appraisal rights.
 
  As of February 17, 1995, MGIC, Attn: James A. McGinnis, P.O. Box 297,
Milwaukee, WI 53201 owned beneficially and of record (28.85%) of the Fund.
 
  Under Massachusetts law, there is a remote possibility that shareholders of
a business trust could, under certain circumstances, be held personally liable
as partners for the obligations of such trust. The Trust Agreement contains
provisions intended to limit such liability and to provide indemnification out
of Trust property of any shareholder charged or held personally liable for
obligations or liabilities of the Trust solely by reason of being or having
been a shareholder of the Trust and not because of such shareholder's acts or
omissions or for some other reason. Thus, the risk of a shareholder incurring
financial loss on account of shareholder liability is limited to circumstances
in which the Trust itself would be unable to meet its obligations.
 
                                      27
<PAGE>
 
  Unless otherwise required by the Act, ordinarily it will not be necessary
for the Trust to hold annual meetings of shareholders. As a result,
shareholders may not consider each year the election of Trustees or the
appointment of independent accountants. Shareholders may remove a Trustee by
the affirmative vote of at least two-thirds of the Trust's outstanding shares
and the Trustees must promptly call a meeting for such purpose when requested
to do so in writing by the record holders of not less than 10% of the
outstanding shares of the Trust. Shareholders may, under certain
circumstances, communicate with other shareholders in connection with
requesting a special meeting of shareholders. The Board of Trustees, however,
will call a special meeting for the purpose of electing Trustees if, at any
time, less than a majority of Trustees holding office at the time were elected
by shareholders.
 
  In the interest of economy and convenience, the Trust does not issue
certificates representing Institutional, Administration or Service Shares.
Instead, the Transfer Agent maintains a record of each Institutional,
Administration and Service shareholder's ownership. Each shareholder receives
confirmation of purchase and redemption orders from the Transfer Agent. Shares
and any dividends and distributions paid by the Fund are reflected in account
statements from the Transfer Agent.
 
                                   TAXATION
FEDERAL TAXES
 
  The Fund is treated as a separate entity for tax purposes. The Fund has
qualified and elected to be treated as a regulated investment company under
Subchapter M of the Code and intends to continue to qualify for such
treatment. To qualify for treatment as a regulated investment company, the
Fund must satisfy certain requirements relating to the sources of its income,
diversification of its assets and distribution of its income to shareholders.
As a regulated investment company, the Fund will not be subject to federal
income or excise tax on any net investment income and net realized capital
gains that are distributed to its shareholders in accordance with certain
timing requirements of the Code.
 
  The Fund intends to qualify to pay "exempt-interest dividends," as defined
in the Code. If it so qualifies, dividends paid by the Fund which are
attributable to interest on Municipal Securities and designated by the Fund as
exempt-interest dividends in a written notice mailed to the Fund shareholders
within sixty days after the close of its taxable year may be treated by
shareholders for all purposes as items of interest excludable from their gross
income under Section 103(a) of the Code. The recipient of tax-exempt income is
required to report such income on his federal income tax return. However, a
shareholder is advised to consult his tax adviser with respect to whether
exempt-interest dividends retain the exclusion under Section 103(a) if such
shareholder would be treated as a "substantial user" under Section 147(a)(1)
with respect to some or all of the tax-exempt obligations held by the Fund.
The Code provides that interest on indebtedness incurred or continued to
purchase or carry shares of the Fund is not deductible to the extent
attributable to exempt-interest dividends.
 
  Dividends paid by the Fund from any taxable net investment income, the
excess of net short-term capital gain over net long-term capital loss and
taxable original issue discount or market discount income will be taxable to
shareholders as ordinary income. Dividends paid by the Fund from the excess of
net long-term capital gain over net short-term capital loss will be taxable as
long-term capital gains regardless of how long the shareholders have held
their shares. These tax consequences will apply regardless of whether
distributions are received in cash or reinvested in shares. Certain
distributions paid by the Fund in January of a given year may be taxable to
shareholders as if received the prior
 
                                      28
<PAGE>
 
December 31. Shareholders will be informed annually about the amount and
character of distributions received from the Fund for federal income tax
purposes, including any distributions that may constitute a tax preference
item under the federal alternative minimum tax.
 
  Investors should consider the tax implications of buying shares immediately
prior to a distribution. Investors who purchase shares shortly before the
record date for a distribution will pay a per share price that includes the
value of the anticipated distribution and will be taxed on the distribution
(unless it is exempt from tax) even though the distribution represents a
return of a portion of the purchase price.
 
  Redemptions and exchanges of shares are taxable events on which a
shareholder may recognize a gain or loss. Any loss realized upon the
redemption of shares with a tax holding period of six months or less is
disallowed to the extent of any tax-exempt dividends received with respect to
such shares and, to the extent not disallowed, is treated as a long-term
capital loss to the extent of any distributions treated as long-term capital
gains with respect to such shares. Any loss realized on the redemption of
shares of the Fund may be disallowed if shares of the Fund are purchased
within a 61-day period beginning 30 days before and ending 30 days after such
redemption.
 
  Although all or a substantial portion of the dividends paid by the Fund may
be excluded by shareholders of the Fund from their gross income for federal
income tax purposes, the Fund may purchase specified private activity bonds,
the interest from which may be a preference item for purposes of the federal
alternative minimum tax (individual and corporate). All exempt-interest
dividends from the Fund will be considered in computing the "adjusted current
earnings" preference item for purposes of the corporate federal alternative
minimum tax, the corporate environmental tax, and the extent, if any, to which
a shareholder's Social Security or certain railroad retirement benefits are
taxable.
 
  Individuals and certain other classes of shareholders may be subject to 31%
backup withholding of federal income tax on taxable distributions, redemptions
and exchanges if they fail to furnish the Fund with their correct taxpayer
identification number and certain certifications or if they are otherwise
subject to backup withholding. Individuals, corporations and other
shareholders that are not U.S. persons under the Code are subject to different
tax rules and may be subject to nonresident alien withholding at the rate of
30% (or a lower rate provided by an applicable tax treaty) on amounts treated
as ordinary dividends from the Fund.
 
OTHER TAXES
 
  In addition to federal taxes, a shareholder may be subject to state, local
or foreign taxes on payments received from the Fund. A state income (and
possibly local income and/or intangible property) tax exemption is generally
available to the extent the Fund's distributions are derived from interest on
(or, in the case of intangible taxes, the value of its assets is attributable
to) certain U.S. Government obligations and/or tax-exempt municipal
obligations issued by or on behalf of the particular state or a political
subdivision thereof, provided in some states that certain thresholds for
holdings of such obligations and/or reporting requirements are satisfied.
 
  SHAREHOLDERS SHOULD CONSULT THEIR OWN TAX ADVISORS WITH RESPECT TO THE
FEDERAL, STATE, LOCAL AND FOREIGN TAX CONSEQUENCES OF INVESTING IN THE FUND IN
THEIR PARTICULAR CIRCUMSTANCES. SEE THE
 
                                      29
<PAGE>
 
ADDITIONAL STATEMENT FOR A FURTHER DISCUSSION OF CERTAIN TAX CONSEQUENCES OF
INVESTING IN SHARES OF THE FUND.
 
                            ADDITIONAL INFORMATION
 
  The term "majority of the outstanding shares" of the Fund means the vote of
the lesser of (i) 67% or more of the shares present at the meeting, if the
holders of more than 50% of the outstanding shares of the Fund are present or
represented by proxy, or (ii) more than 50% of the outstanding shares of the
Fund.
 
  As used in this Prospectus, the term "Business Day" refers to those days
when the Investment Adviser, The Northern Trust Company, State Street Bank and
Trust Company and the Federal Reserve Bank of New York are open for business,
which is Monday through Friday except for holidays. Such holidays currently
are: New Year's Day (observed), Martin Luther King Day, Presidents' Day
(observed), Good Friday, Memorial Day (observed), Independence Day, Labor Day,
Columbus Day, Thanksgiving and Christmas. On those days when one or more of
such organizations close early as a result of such day being a partial holiday
or otherwise, the right is reserved to advance the time on that day by which
purchase and redemption requests must be received.
 
                                      30
<PAGE>
 
                              ADDITIONAL SERVICES
 
  The Trust, on behalf of the Fund, has adopted a Service Plan with respect to
the Service Shares which authorizes the Fund to compensate institutions
("Service Organizations") for providing account administration and personal and
account maintenance services to their customers who are beneficial owners of
such Shares. The Trust, on behalf of the Fund, will enter into agreements with
Service Organizations which purchase Service Shares on behalf of their
customers ("Service Agreements"). The Service Agreements will provide for
compensation to the Service Organizations in an amount up to 0.50% (on an
annualized basis) of the average daily net assets of the Service Shares of the
Fund attributable to or held in the name of the Service Organization for its
customers; provided, however, that the fee paid for personal and account
maintenance services shall not exceed 0.25% of such average daily net assets.
The services provided by the Service Organizations may include acting, directly
or through an agent, as the sole shareholder of record, maintaining account
records for customers, processing orders to purchase, redeem or exchange
Service Shares for customers, responding to inquiries from prospective and
existing shareholders and assisting customers with investment procedures.
 
  For the fiscal year ended October 31, 1994, the Trust, on behalf of the Fund,
paid the Service Organizations fees at an annual rate of 0.50% of the Fund's
average daily net assets attributable to Service Shares.
 
  Holders of Service Shares of the Fund will bear all expenses and fees paid to
Service Organizations for their services with respect to such Shares as well as
any other expenses which are directly attributable to such Shares.
 
  Service Organizations (other than broker-dealers) may charge other fees to
their customers who are the beneficial owners of Service Shares in connection
with their customer accounts. These fees would be in addition to any amounts
received by the Service Organization under a Service Agreement and may affect
the return earned on an investment in the Fund. The Trust, on behalf of the
Fund, will accrue payments made pursuant to a Service Agreement daily. All
inquiries of beneficial owners of Service Shares should be directed to such
owner's Service Organization.
 
                            REPORTS TO SHAREHOLDERS
 
  Recordholders of Service Shares of the Fund will receive an annual report
containing audited financial statements and a semi-annual report. Each
recordholder of Service Shares, will also be provided with a printed
confirmation for each transaction in its account and monthly account statement.
A year-to-date statement for any account will be provided to a Service
Organization upon request made to Goldman Sachs.
 
  Service Organizations will be responsible for providing services similar to
those described above to their customers who are the beneficial owners of such
Shares. For example, Service Organizations are responsible for providing each
customer exercising investment discretion with monthly statements with respect
to such customer's account in lieu of an immediate confirmation of each
transaction.
 
                           PURCHASE OF SERVICE SHARES
 
   It is expected that all direct purchasers of Service Shares of the Fund will
be Service Organizations or their nominees. Customers of Service Organizations
may invest in Service Shares only through their
 
                                       31
<PAGE>
 
Service Organizations. Service Shares of the Fund may be purchased by a Service
Organization through Goldman Sachs at the net asset value per share next
determined after receipt from a Service Organization of an order without the
imposition of a sales load. If, by 3:00 p.m. Chicago time (4:00 p.m. New York
time), an order, a check or a Federal Reserve draft is received from a Service
Organization by Goldman Sachs, the price per share will be the net asset value
per share computed on the day the purchase order or such form of payment is
received. See "Net Asset Value."
 
PURCHASE PROCEDURES
 
  Purchases of Service Shares by a Service Organization may be made by placing
an order with Goldman Sachs at 800-621-2550 and either wiring Federal Funds to
The Northern Trust Company ("Northern") as subcustodian for State Street Bank
and Trust Company ("State Street") on the next Business Day or initiating an
ACH transfer to ensure receipt by Northern on the next Business Day. Purchases
may also be made by a Service Organization by check or ACH transfer (except
that a check drawn on a foreign bank will not be accepted) or Federal Reserve
draft made payable to "Goldman Sachs Trust -- GS Short Duration Tax-Free Fund"
and should be directed to Goldman Sachs Trust -- GS Short Duration Tax-Free
Fund, c/o GSAM Shareholder Services, 4900 Sears Tower, Chicago, Illinois 60606.
Payment of the proceeds of redemption of shares purchased by check may be
delayed for a period of time as described under "Redemption of Service Shares."
 
  The Service Organizations are responsible for the timely transmittal of
purchase orders to Goldman Sachs and payments to Northern or Goldman Sachs. In
order to facilitate timely transmittal, the Service Organizations have
established times by which purchase orders and payments must be received by
them.
 
OTHER PURCHASE INFORMATION
 
  The Fund does not have any minimum purchase or account requirements with
respect to Service Shares. A Service Organization may, however, impose a
minimum amount for initial and subsequent investments in Service Shares, and
may establish other requirements such as a minimum required account balance. A
Service Organization may effect redemptions of noncomplying accounts, and may
impose a charge for any special services rendered to its customers. Customers
should contact their Service Organization for further information concerning
such requirements and charges.
 
  The Fund reserves the right to redeem Service Shares of any Service
Organization whose account balance is less than $100 as a result of earlier
redemptions. Such redemptions will not be implemented if the value of such
shareholder's account falls below the minimum account balance solely as a
result of market conditions. The Trust will give sixty (60) days prior written
notice to Service Organizations whose Service Shares are being redeemed to
allow them to purchase sufficient additional Service Shares to avoid such
redemption.
 
PURCHASE BY FEDERAL FUNDS WIRE OR ACH TRANSFER. If a purchase order is received
from a Service Organization by Goldman Sachs by 3:00 p.m. Chicago time, the
purchase shares will be issued and dividends will begin on such shares on the
next Business Day, provided that a Federal Funds wire or an ACH transfer is
received by Northern on such day.
 
PURCHASE BY CHECK OR FEDERAL RESERVE DRAFT. If a Service Organization's check
or Federal Reserve draft is received by Goldman Sachs by 3:00 p.m. Chicago
time, the purchased shares will be issued and dividends will begin on such
shares on the next Business Day after the Service Organization's check or
Federal Reserve draft is received by Goldman Sachs.
 
 
                                       32
<PAGE>
 
  The Fund and Goldman Sachs each reserves the right to reject any specific
purchase order (including exchanges) or to restrict purchases or exchanges of
Service Shares by a particular purchaser (or group of related purchasers). The
Fund or Goldman Sachs may reject or restrict purchases or exchanges of Service
Shares by a particular purchaser or group, for example, when a pattern of
frequent purchases and sales or exchanges of Service Shares of the Fund is
evident, or if the purchase and sale or exchange orders are, or a subsequent
abrupt redemption might be, of a size that would disrupt management of the
Fund.
 
                               EXCHANGE PRIVILEGE
 
  Shares of the Fund may be exchanged by Service Organizations for (i) Service
Shares of any other mutual fund sponsored by Goldman Sachs and designated as an
eligible fund for this purpose and (ii) the relevant class of any portfolio of
Goldman Sachs Money Market Trust at the net asset value next determined either
by writing to Goldman Sachs, Attention: Goldman Sachs Trust -- GS Short
Duration Tax-Free Fund, c/o GSAM Shareholder Services, 4900 Sears Tower,
Chicago, Illinois 60606 or, if previously elected in the Fund's Account
Information Form, by telephone at 800-621-2550 (7:00 a.m. to 3:00 p.m. Chicago
time). A shareholder should obtain and read the prospectus relating to any
other fund and its shares or units and consider its investment objective,
policies and applicable fees before making an exchange. Service Shares acquired
by telephone exchange must be registered in the same name(s) and have the same
address as Service Shares of the Fund from which the exchange is being made.
 
  In times of drastic economic or market changes the telephone exchange
privilege may be difficult to implement. In an effort to prevent unauthorized
or fraudulent exchanges by telephone, Goldman Sachs employs reasonable
procedures as set forth under "Redemption of Service Shares" to confirm that
such instructions are genuine. For federal income tax purposes, an exchange is
treated as a sale of the Service Shares surrendered in the exchange, on which
an investor may realize a gain or loss, followed by a purchase of Service
Shares or the relevant class of any portfolio of Goldman Sachs Money Market
Trust received in the exchange. Shareholders should consult their own tax
advisers concerning the tax consequences of an exchange. Exchanges are
available only in states where exchanges may legally be made. The exchange
privilege may be modified or withdrawn on sixty (60) days' written notice to
recordholders of Service Shares and is subject to certain limitations. See
"Purchase of Service Shares."
 
                          REDEMPTION OF SERVICE SHARES
 
  The Fund will redeem its Service Shares upon request of the recordholder of
such Shares on any Business Day at the net asset value next determined after
the receipt by the Transfer Agent of such request in proper form. See "Net
Asset Value." If Service Shares to be redeemed were recently purchased by
check, the Fund may delay transmittal of redemption proceeds until such time as
it has assured itself that good funds have been collected for the purchase of
such Service Shares. This may take up to fifteen (15) days. Redemption requests
may be made by writing to or calling the Transfer Agent at the address or
telephone number set forth on the inside front cover page of this Prospectus. A
Service Organization may request redemptions by telephone if the optional
telephone redemption privilege is elected on the Account Information Form. It
may be difficult to implement redemptions by telephone in times of drastic
economic or market changes. In an effort to prevent unauthorized or fraudulent
 
                                       33
<PAGE>
 
redemption or exchange requests by telephone, Goldman Sachs employs reasonable
procedures specified by the Trust to confirm that such instructions are
genuine. Among other things, any redemption request that requires money to go
to an account or address other than that designated on the Account Information
Form must be in writing and signed by an authorized person designated on the
Account Information Form. Any such written request is also confirmed by
telephone with both the requesting party and the designated bank account to
verify instructions. Exchanges among accounts with different names, addresses
and social security or other taxpayer identification numbers must be in writing
and signed by an authorized person designated on the Account Information Form.
Other procedures may be implemented from time to time. If reasonable procedures
are not implemented, the Trust may be liable for any loss due to unauthorized
or fraudulent transactions. In all other cases, neither the Fund, the Trust nor
Goldman Sachs will be responsible for the authenticity of redemption or
exchange instructions received by telephone. If Goldman Sachs receives a
redemption request by 3:00 p.m. Chicago time, the Service Shares to be redeemed
earn dividends with respect to the day the request is received.
 
  The Fund will arrange for the proceeds of redemptions effected by any means
to be wired to the recordholder of Service Shares. Redemption proceeds will
normally be wired on the next Business Day in Federal Funds (for a total one-
day delay), but may be paid up to seven (7) days after receipt of a properly
executed redemption request. Wiring of redemption proceeds may be delayed one
additional Business Day if the Federal Reserve Bank is closed on the day
redemption proceeds would ordinarily be wired. Once wire transfer instructions
have been given by Goldman Sachs, neither the Fund, the Trust nor Goldman Sachs
assumes any further responsibility for the performance of intermediaries or the
customer's Service Organization in the transfer process. If a problem with such
performance arises, the customer should deal directly with such intermediaries
or Service Organization.
 
  Additional documentation regarding a redemption by any means may be required
to effect a redemption when deemed appropriate by the Transfer Agent. The
request for such redemption will not be considered to have been received in
proper form until such additional documentation has been submitted to the
Transfer Agent by the recordholder of Service Shares.
 
  The Service Organizations are responsible for the timely transmittal of
redemption requests by their customers to the Transfer Agent. In order to
facilitate timely transmittal of redemption requests, Service Organizations
have established times by which redemption requests must be received by them.
Additional documentation may be required when deemed appropriate by a Service
Organization.
 
  Except with respect to Service Organizations whose account balances are less
than $100, Service Shares of the Fund are not redeemable at the option of the
Fund unless the Board of Trustees of the Trust determines in its sole
discretion that failure to so redeem may have material adverse consequences to
the shareholders of the Fund. The Fund, however, assumes no responsibility to
compel redemptions.
 
                             ---------------------
 
                                       34
<PAGE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRE-
SENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING
BEEN AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES TO
WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY
SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS
UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE TRUST OR THE FUND SINCE THE DATE HEREOF OR THAT
THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS
DATE.
 
                               ----------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Summary....................................................................   3
Financial Highlights.......................................................   8
Investment Objective and Policies..........................................   9
Investment Adviser.........................................................  10
Municipal Securities and Other Investments.................................  11
Other Investments and Practices............................................  15
Risk Factors...............................................................  19
Investment Restrictions....................................................  22
Portfolio Turnover.........................................................  22
Management.................................................................  22
Dividends..................................................................  24
Net Asset Value............................................................  25
Performance Information....................................................  25
Shares of the Trust........................................................  26
Taxation...................................................................  28
Additional Information.....................................................  30
Additional Services........................................................  31
Reports to Shareholders....................................................  31
Purchase of Service Shares.................................................  31
Exchange Privilege.........................................................  33
Redemption of Service Shares...............................................  33
</TABLE>
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                               GS SHORT DURATION
                                 TAX-FREE FUND
                                SERVICE SHARES
 
                                  MANAGED BY
                                  ----------

                                 GOLDMAN SACHS
                               ASSET MANAGEMENT,
                       A SEPARATE OPERATING DIVISION OF
                             GOLDMAN, SACHS & CO.
 
                                 -------------
 
                                  PROSPECTUS
 
                                 -------------
 
                             GOLDMAN, SACHS & CO.
 
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission