DREYFUS TREASURY CASH MANAGEMENT
497, 1994-11-28
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PROSPECTUS                                                 NOVEMBER 28, 1994
                         DREYFUS TREASURY CASH MANAGEMENT
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        DREYFUS TREASURY CASH MANAGEMENT (THE "FUND") IS AN OPEN-END,
DIVERSIFIED, MANAGEMENT INVESTMENT COMPANY, KNOWN AS A MONEY MARKET MUTUAL
FUND. ITS GOAL IS TO PROVIDE INVESTORS WITH AS HIGH A LEVEL OF CURRENT INCOME
AS IS CONSISTENT WITH THE PRESERVATION OF CAPITAL AND THE MAINTENANCE OF
LIQUIDITY.
        THE FUND IS DESIGNED FOR INSTITUTIONAL INVESTORS, PARTICULARLY BANKS,
ACTING FOR THEMSELVES OR IN A FIDUCIARY, ADVISORY, AGENCY, CUSTODIAL OR
SIMILAR CAPACITY. FUND SHARES MAY NOT BE PURCHASED DIRECTLY BY INDIVIDUALS,
ALTHOUGH INSTITUTIONS MAY PURCHASE SHARES FOR ACCOUNTS MAINTAINED BY
INDIVIDUALS. SUCH INSTITUTIONS HAVE AGREED TO TRANSMIT COPIES OF THIS
PROSPECTUS TO EACH INDIVIDUAL OR ENTITY FOR WHOSE ACCOUNT THE INSTITUTION
PURCHASES FUND SHARES, TO THE EXTENT REQUIRED BY LAW.
        BY THIS PROSPECTUS, THE FUND IS OFFERING CLASS A SHARES AND CLASS B
SHARES. CLASS A SHARES AND CLASS B SHARES ARE IDENTICAL, EXCEPT AS TO THE
SERVICES OFFERED TO AND THE EXPENSES BORNE BY EACH CLASS. CLASS B BEARS
CERTAIN COSTS PURSUANT TO A SERVICE PLAN ADOPTED IN ACCORDANCE WITH RULE
12B-1 UNDER THE INVESTMENT COMPANY ACT OF 1940. INVESTORS CAN INVEST,
REINVEST OR REDEEM SHARES AT ANY TIME WITHOUT CHARGE OR PENALTY IMPOSED BY
THE FUND.
        THE DREYFUS CORPORATION SERVES AS THE FUND'S INVESTMENT ADVISER.
        AN INVESTMENT IN THE FUND IS NEITHER INSURED NOR GUARANTEED BY THE
U.S. GOVERNMENT. THERE CAN BE NO ASSURANCE THAT THE FUND WILL BE ABLE TO
MAINTAIN A STABLE NET ASSET VALUE OF $1.00 PER SHARE.
        THIS PROSPECTUS SETS FORTH CONCISELY INFORMATION ABOUT THE FUND THAT
AN INVESTOR SHOULD KNOW BEFORE INVESTING. IT SHOULD BE READ AND RETAINED FOR
FUTURE REFERENCE.
        PART B (ALSO KNOWN AS THE STATEMENT OF ADDITIONAL INFORMATION), DATED
NOVEMBER 28, 1994, WHICH MAY BE REVISED FROM TIME TO TIME, PROVIDES A FURTHER
DISCUSSION OF CERTAIN AREAS IN THIS PROSPECTUS AND OTHER MATTERS WHICH MAY BE
OF INTEREST TO SOME INVESTORS. IT HAS BEEN FILED WITH THE SECURITIES AND
EXCHANGE COMMISSION AND IS INCORPORATED HEREIN BY REFERENCE. FOR A FREE COPY,
WRITE TO THE FUND AT 144 GLENN CURTISS BOULEVARD, UNIONDALE, NEW YORK
11556-0144, OR CALL 1-800-554-4611. WHEN TELEPHONING, ASK FOR OPERATOR 666.
        MUTUAL FUND SHARES ARE NOT DEPOSITS OR OBLIGATIONS OF, OR GUARANTEED
OR ENDORSED BY, ANY BANK, AND ARE NOT FEDERALLY INSURED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION, THE FEDERAL RESERVE BOARD, OR ANY OTHER
AGENCY. ALL MONEY MARKET FUND SHARES INVOLVE CERTAIN INVESTMENT RISKS,
INCLUDING THE POSSIBLE LOSS OF PRINCIPAL.
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                                  TABLE OF CONTENTS
                                                                        PAGE
   ANNUAL FUND OPERATING EXPENSES..................................        2
   CONDENSED FINANCIAL INFORMATION.................................        3
   YIELD INFORMATION...............................................        3
   DESCRIPTION OF THE FUND.........................................        4
   MANAGEMENT OF THE FUND..........................................        5
   HOW TO BUY FUND SHARES..........................................        6
   INVESTOR SERVICES...............................................        7
   HOW TO REDEEM FUND SHARES.......................................        8
   SERVICE PLAN....................................................        9
   SHAREHOLDER SERVICES PLAN.......................................        9
   DIVIDENDS, DISTRIBUTIONS AND TAXES..............................        9
   GENERAL INFORMATION.............................................       10
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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.
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                             ANNUAL FUND OPERATING EXPENSES
                       (as a percentage of average daily net assets)
<TABLE>
                                                                                               Class A        Class B
                                                                                               Shares         Shares
    <S>                                                                                        <C>           <C>
    Management Fees .....................................................                      .20%          .20%
    12b-1 Fees (distribution and servicing) .............................                      .--           .25%
    Total Fund Operating Expenses .......................................                      .20%          .45%
</TABLE>
<TABLE>
Example:
    An investor would pay the following expenses on a $1,000
    investment, assuming (1) 5% annual return and (2) redemption at
    the end of each time period:
                                                                                              Class A        Class B
                                                                                               Shares        Shares
<S>                              <C>                                                           <C>           <C>
                                 1 Year..................................                      $ 2           $ 5
                                 3 Years.................................                      $ 6           $14
                                 5 Years ................................                      $11           $25
                                 10 Years................................                      $26           $57
</TABLE>
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        The amounts listed in the example should not be considered as
representative of past or future expenses and actual 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%.
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        The purpose of the foregoing table is to assist investors in
understanding the various costs and expenses borne by the Fund, and therefore
indirectly by investors, the payment of which will reduce investors' return
on an annual basis. Unless The Dreyfus Corporation gives the Fund's investors
at least 90 days' notice to the contrary, The Dreyfus Corporation, and not
the Fund, will be liable for Fund expenses (exclusive of taxes, brokerage,
interest on borrowings and (with the prior written consent of the necessary
state securities commissions) extraordinary expenses) other than the
following expenses, which will be borne by the Fund: (i) the management fee
payable by the Fund monthly at the annual rate of .20 of 1% of the Fund's
average daily net assets and (ii) as to Class B shares only, payments made
pursuant to the Fund's Service Plan at the annual rate of .25 of 1% of the
value of the average daily net assets of Class B. Institutions and certain
Service Agents (as defined below) effecting transactions in Fund shares for
the accounts of their clients may charge their clients direct fees in
connection with such transactions; such fees are not reflected in the
foregoing table. See "Management of the Fund," "How to Buy Fund Shares,"
"Service Plan" and "Shareholder Services Plan".
              Page 2
                           CONDENSED FINANCIAL INFORMATION
        The information in the following table has been audited by Ernst &
Young LLP the Fund's independent auditors, whose report thereon appears in
the Statement of Additional Information. Further financial data and related
notes are included in the Statement of Additional Information, available upon
request.
                                  FINANCIAL HIGHLIGHTS
        Contained below is per share operating performance data for a share
of beneficial interest outstanding, total investment return, ratios to
average net assets and other supplemental data for each year indicated. This
information has been derived from information provided in the Fund's
financial statements.
<TABLE>
                                                             CLASS A SHARES                                     CLASS B SHARES
                   ---------------------------------------------------------------------------------      -----------------------
                                                           YEAR ENDED JULY 31,                                   PERIOD ENDED
                   ---------------------------------------------------------------------------------       ----------------------
                     1987(1)      1988      1989      1990       1991      1992      1993         1994        July 31, 1994(2)
                    -------     -------    -------  -------    -------   -------    -------     --------    --------------------
<S>               <C>          <C>        <C>        <C>        <C>      <C>         <C>          <C>               <C>
PER SHARE DATA:
 Net asset value,
  beginning
  of year....      $1.0000      $.0995     $.9996     $.9996     $.9999   $1.0000    $1.0000      $1.0000           $1.0000
                   --------     --------   --------   --------   ------   -------    -------      -------           -------
 INVESTMENT OPERATIONS:
 Investment
  income--net ..     .0531       .0660      .0854      .0824      .0688     .0452      .0310         .0322           .0177
 Net realized
 gain (loss) on
 investments.....   (.0005)      .0001        --       .0003      .0001       --         --            --             --
                   --------     --------   --------   --------   ------   -------    -------      -------           -------
TOTAL FROM
 INVESTMENT
 OPERATIONS...       .0526       .0661      .0854      .0827      .0689     .0452      .0310        .0322            .0177
                   --------     --------   --------   --------   ------   -------    -------      -------           -------
  DISTRIBUTIONS:
 Dividends from
 investment
 income-net.....   (.0531)      (.0660)    (.0854)    (.0824)    (.0688)   (.0452)    (.0310)      (.0322)          (.0177)
 Dividends from net
 realized gain
 on investments..     --         --         --           --         --        --       --            --                --
                   --------     --------   --------   --------   ------   -------    -------      -------           -------
  TOTAL
 DISTRIBUTIONS..   (.0531)       (.0660)    (.0854)   (.0824)     (.0688)  (.0452)    (.0310)      (.0322)          (.0177)
                   --------     --------   --------   --------   ------   -------    -------      -------           -------
 Net asset value,
 end of year..     $.9995        $.9996     $.9996    $.9999     $1.0000    $1.0000  $1.0000      $1.0000           $1.0000
                   ======        ======     ======    =======    =======    =======   =======     ========          =======
TOTAL INVESTMENT
  RETURN.........    6.00%(3)      6.81%      8.88%     8.56%       7.10%     4.62%     3.14%        3.27%             3.22%(3)
RATIOS / SUPPLEMENTAL DATA:
 Ratio of expenses
 to average
 net assets....       .20%(3)       .20%       .20%      .20%        .20%      .20%       .20%        .20%             .45%(3)
 Ratio of net
 investment income
 to average
 net assets.....     5.93%(3)      6.62%      8.53%     8.19%       6.75%     4.45%      3.12%       3.18%            3.33%(3)
 Decrease reflected in
  above expense ratios
  due to undertaking by The
  Dreyfus
  Corporation...      10%           .06%       .05%       .07%       .06%      .05%       .04%        .01%                 --
 Net Assets, end of year
  (000's omitted).. $483,360    $722,268   $777,371  $1,558,493  $2,643,267  $4,103,056  $2,406,604  $1,982,582         $20,610
- ----------------------------
(1)From September 4, 1986 (commencement of operations) to July 31, 1987.
(2)From January 10, 1994 (commencement of initial offering) to July 31, 1994.
(3)Annualized.
</TABLE>
YIELD INFORMATION
        From time to time, the Fund advertises its yield and effective yield.
Both yield figures are based on historical earnings and are not intended to
indicate future performance. It can be expected that these yields will
fluctuate substantially. The yield of the Fund refers to the income generated
by an investment in the Fund over a seven-day period (which period will be
stated in the advertisement). This income is then annualized. That is, the
amount of income generated by the investment during that week is assumed to
be generated each week over a 52-week period and is shown as a percentage of
the investment. The effective yield is calculated similarly, but, when
annualized, the income earned by an investment in the Fund is assumed to be
reinvested. The effective yield will be slightly higher than the yield
because of the compounding effect of this assumed reinvestment. The Fund's
yield and effective yield may reflect absorbed expenses pursuant to any
undertaking that may be in effect. See "Management of the Fund." Both yield
figures also take into account any applicable distribution and service fees.
As a result, at any given time, the performance of Class B should be expected
to be lower than that of Class A. See "Service Plan."
        Yield information is useful in reviewing the Fund's performance, but
because yields will fluctuate, under certain conditions such information may
not provide a basis for comparison with domestic bank deposits, other
investments which pay a fixed yield for a stated period of time, or other
investment companies which may use a different method of computing yield.
        Comparative performance information may be used from time to time in
advertising or marketing the Fund's shares, including data from Lipper
Analytical Services, Inc., Bank Rate Monitortrademark, IBC/Donoghue's Money
Fund Report, Morningstar, Inc. and other industry publications.
                Page 3
                          DESCRIPTION OF THE FUND
GENERAL -- By this Prospectus, two classes of shares of the Fund are being
offered -- Class A shares and Class B shares (each such class being referred
to as a "Class"). The Classes are identical, except that Class B shares are
subject to an annual distribution and service fee at the rate of .25% of the
value of the average daily net assets of Class B. The fee is payable for
advertising, marketing and distributing the Fund's Class B shares and for
ongoing personal services relating to Class B shareholder accounts and
services related to the maintenance of such shareholder accounts pursuant to
a Service Plan adopted in accordance with Rule 12b-1 under the Investment
Company Act of 1940. See "Service Plan." The distribution and service fee
paid by Class B will cause Class B to have a higher expense ratio and to pay
lower dividends than Class A.
        WHEN USED IN THIS PROSPECTUS AND IN THE STATEMENT OF ADDITIONAL
INFORMATION, THE TERMS "INVESTOR" AND "SHAREHOLDER" REFER TO THE INSTITUTION
PURCHASING FUND SHARES AND DO NOT REFER TO ANY INDIVIDUAL OR ENTITY FOR WHOSE
ACCOUNT THE INSTITUTION MAY PURCHASE FUND SHARES. Such institutions have
agreed to transmit copies of this Prospectus and all relevant Fund materials,
including proxy materials, to each individual or entity for whose account the
institution purchases Fund shares, to the extent required by law.
INVESTMENT OBJECTIVE -- The Fund's goal is to provide investors with as high
a level of current income as is consistent with the preservation of capital
and the maintenance of liquidity. The Fund's investment objective cannot be
changed without approval by the holders of a majority (as defined in the
Investment Company Act of 1940) of the Fund's outstanding voting shares.
There can be no assurance that the Fund's investment objective will be
achieved. Securities in which the Fund invests may not earn as high a level
of current income as long-term or lower quality securities which generally
have less liquidity, greater market risk and more fluctuation in market
value.
MANAGEMENT POLICIES -- To achieve its goal, the Fund invests in securities
issued or guaranteed as to principal and interest by the U.S. Government and
repurchase agreements in respect of these securities.
        The Fund seeks to maintain a net asset value of $1.00 per share for
purchases and redemptions. To do so, the Fund uses the amortized cost method
of valuing its securities pursuant to Rule 2a-7 under the Investment Company
Act of 1940, certain requirements of which are summarized as follows. In
accordance with Rule 2a-7, the Fund will maintain a dollar-weighted average
portfolio maturity of 90 days or less, purchase only instruments having
remaining maturities of 13 months or less and invest only in U.S. dollar
denominated securities. For further information regarding the amortized cost
method of valuing securities, see "Determination of Net Asset Value" in the
Fund's Statement of Additional Information. There can be no assurance that
the Fund will be able to maintain a stable net asset value of $1.00 per
share.
        Securities issued or guaranteed by the U.S. Government include U.S.
Treasury securities, which differ only in their interest rates, maturities
and times of issuance. Treasury Bills have initial maturities of one year or
less; Treasury Notes have initial maturities of one to ten years; and
Treasury Bonds generally have initial maturities of greater than ten years.
        Repurchase agreements involve the acquisition by the Fund of an
underlying debt instrument, subject to an obligation of the seller to
repurchase, and the Fund to resell, the instrument at a fixed price, usually
not more than one week after its purchase. The Fund's custodian or
sub-custodian will have custody of, and will hold in a segregated account,
securities acquired by the Fund under a repurchase agreement. Repurchase
agreements are considered by the staff of the Securities and Exchange
Commission to be loans by the Fund. In an attempt to reduce the risk of
incurring a loss on a repurchase agreement, the Fund will enter into
repurchase agreements only with domestic banks with total assets in excess of
one billion dollars or primary government securities dealers reporting to the
Federal Reserve Bank of New York, with respect to securities of the type in
which the Fund may invest, and will require that additional securities be
deposited with it if the value of the securities purchased should decrease
below resale price. The Dreyfus Corporation will monitor on an ongoing basis
the value of the collateral to assure that it always equals or exceeds the
repurchase price. Certain costs may be incurred by the Fund in connection
with the sale of the securities if the seller does not repurchase them in
accordance with the repurchase agreement. In addition, if bankruptcy
proceedings are commenced with respect to the seller of the securities,
realization on the securities by the Fund may be delayed or lim-
              Page 4
ited. The Fund will consider on an ongoing basis the creditworthiness of the
institutions with which it enters into repurchase agreements.
CERTAIN FUNDAMENTAL POLICY -- The Fund may borrow money from banks, but only
for temporary or emergency (not leveraging) purposes, in an amount up to 15%
of the value of the Fund's total assets (including the amount borrowed)
valued at the lesser of cost or market, less liabilities (not including the
amount borrowed) at the time the borrowing is made. This is a fundamental
policy that cannot be changed without approval by the holders of a majority
(as defined in the Investment Company Act of 1940) of the Fund's outstanding
voting shares. See "Investment Objective and Management Policies_Investment
Restrictions" in the Statement of Additional Information.
CERTAIN ADDITIONAL NON-FUNDAMENTAL POLICIES -- The Fund may (i) pledge,
hypothecate, mortgage or otherwise encumber its assets, but only to secure
permitted borrowings and (ii) invest up to 10% of its net assets in
repurchase agreements providing for settlements in more than seven days after
notice and in other illiquid securities. See "Investment Objective and
Management Policies -- Investment Restrictions" in the Statement of
Additional Information.
INVESTMENT CONSIDERATIONS -- The Fund attempts to increase yields by trading
to take advantage of short-term market variations. This policy is expected to
result in high portfolio turnover but should not adversely affect the Fund
since the Fund usually does not pay brokerage commissions when it purchases
U.S. Government securities. The value of the portfolio securities held by the
Fund will vary inversely to changes in prevailing interest rates. Thus, if
interest rates have increased from the time a security was purchased, such
security, if sold, might be sold at a price less than its cost. Similarly, if
interest rates have declined from the time a security was purchased, such
security, if sold, might be sold at a price greater than its purchase cost.
In either instance, if the security was purchased at face value and held to
maturity, no gain or loss would be realized.
                             MANAGEMENT OF THE FUND


        The Dreyfus Corporation, located at 200 Park Avenue, New York, New
York 10166, was formed in 1947 and serves as the Fund's investment adviser.
The Dreyfus Corporation is a wholly-owned subsidiary of Mellon Bank, N.A.,
which is a wholly-owned subsidiary of Mellon Bank Corporation ("Mellon"). As
of October 31, 1994, The Dreyfus Corporation managed or administered
approximately $73 billion in assets for more than 1.9 million investor
accounts nationwide.


        The Dreyfus Corporation supervises and assists in the overall
management of the Fund's affairs under a Management Agreement with the Fund,
subject to the overall authority of the Fund's Board of Trustees in
accordance with Massachusetts law.

        Mellon is a publicly owned multibank holding company incorporated
under Pennsylvania law in 1971 and registered under the Federal Bank Holding
Company Act of 1956, as amended. Mellon provides a comprehensive range of
financial products and services in domestic and selected international
markets. Mellon is among the twenty-five largest bank holding companies in
the United States based on total assets. Mellon's principal wholly-owned
subsidiaries are Mellon Bank, N.A., Mellon Bank (DE) National Association,
Mellon Bank (MD), The Boston Company, Inc., AFCOCredit Corporation and a
number of companies known as Mellon Financial Services Corporations. Through
its subsidiaries, Mellon managed more than $130 billion in assets as of July
31, 1994, including approximately $6 billion in mutual fund assets. As of
June 30, 1994, various subsidiaries of Mellon provided non-investment
services, such as custodial or administration services, for approximately
$747 billion in assets including approximately $73 billion in mutual fund
assets.

        Under the terms of the Management Agreement, the Fund has agreed to
pay The Dreyfus Corporation a monthly fee at the annual rate of .20 of 1% of
the value of the Fund's average daily net assets. For the fiscal year ended
July 31, 1994, as to the Fund's Class A shares, a monthly management fee
at the effective annual rate of .19 of l% of the value of the average
daily net assets of Class A shares was paid to The Dreyfus Corporation,
pursuant to an undertaking by The Dreyfus Corporation then in effect.
        Unless The Dreyfus Corporation gives the Fund's investors at least 90
days' notice to the contrary, The Dreyfus Corporation, and not the Fund, will
be liable for Fund expenses (exclusive of taxes, brokerage, interest on
borrowings and (with the prior written consent of the necessary state
securities commissions) extraordinary expenses) other than
                Page 5
the following expenses, which will be borne by the Fund: (i)the management
fee payable by the Fund monthly at the annual rate of .20 of 1% of the Fund's
average daily net assets and (ii) as to Class B shares only, payments made
pursuant to the Fund's Service Plan at the annual rate of .25 of 1% of the
value of the average daily net assets of Class B. See "Service Plan." The Fund
 will not reimburse The Dreyfus Corporation for any amounts it may bear.
        The Fund's distributor is Premier Mutual Fund Services, Inc. (the
"Distributor"), located at One Exchange Place, Boston, Massachusetts 02109.
The Distributor is a wholly-owned subsidiary of Institutional Administration
Services, Inc., a provider of mutual fund administration services, the parent
company of which is the Boston Institutional Group, Inc.
        The Shareholder Services Group, Inc., a subsidiary of First Data
Corporation, P.O. Box 9671, Providence, Rhode Island 02940-9671, is the
Fund's Transfer and Dividend Disbursing Agent (the "Transfer Agent"). The
Bank of New York, 110 Washington Street, New York, New York 10286, is the
Fund's Custodian. First Interstate Bank of California, 707 Wilshire
Boulevard, Los Angeles, California 90017, is the Fund's Sub-custodian (the
"Sub-custodian").
                        HOW TO BUY FUND SHARES
        The Fund is designed for institutional investors, particularly banks,
acting for themselves or in a fiduciary, advisory, agency, custodial or
similar capacity. Fund shares may not be purchased directly by individuals,
although institutions may purchase shares for accounts maintained by
individuals. Generally, each investor will be required to open a single
master account with the Fund for all purposes. In certain cases, the Fund may
request investors to maintain separate master accounts for shares held by the
investor (i) for its own account, for the account of other institutions and
for accounts for which the institution acts as a fiduciary, and (ii) for
accounts for which the investor acts in some other capacity. An institution
may arrange with the Transfer Agent for sub-accounting services and will be
charged directly for the cost of such services.

        The minimum initial investment is $10,000,000, unless: (a) the
investor has invested at least $10,000,000 in the aggregate among the Fund,
Dreyfus Cash Management, Dreyfus Cash Management Plus, Inc., Dreyfus
Government Cash Management, Dreyfus Municipal Cash Management Plus, Dreyfus
New York Municipal Cash Management, Dreyfus Tax Exempt Cash Management and
Dreyfus Treasury Prime Cash Management; or (b) the investor has, in the
opinion of management of Dreyfus Institutional Services Division, a divisi
on of Dreyfus Service Corporation, adequate intent and availability of funds
to reach a future level of investment of $10,000,000 among the funds
identified above. There is no minimum for subsequent purchases. The initial
investment must be accompanied by the Fund's Account Application. Management
understands that some financial institutions, securities dealers and other
industry professionals (collectively, "Service Agents") and other
institutions may charge their clients fees in connection with purchases for
the accounts of their clients. These fees would be in addition to any amounts
which might be received under the Service Plan. Service Agents may receive
different levels of compensation for selling different classes of shares.
Each Service Agent has agreed to transmit to its clients a schedule of such
fees. Share certificates are issued only upon the investor's written request.
No certificates are issued for fractional shares. The Fund reserves the right
to reject any purchase order.


        Fund shares may be purchased by wire, by telephone or through
compatible computer facilities. All payments should be made in U.S. dollars
and, to avoid fees and delays, should be drawn only on U.S. banks. To place
an order by telephone, investors should telephone the Dreyfus Institutional
Services Division in New York (in New York State call 1-718-895-1650;
outside New York State call 1-800-346-3621).  For instructions concerning
purchases and to determine whether their computer facilities are compatible
with the Fund's, investors should call the Dreyfus Institutional Services
Division at one of the telephone numbers listed under "General Information"
in this Prospectus.

        Fund shares are sold on a continuous basis at the net asset value per
share next determined after an order in proper form and Federal Funds (monies
of member banks in the Federal Reserve System which are held on deposit at a
Federal Reserve Bank) are received by the Custodian or Sub-custodian, as the
case may be and as more fully described below, or by any other agent or
entity subject to the direction of such agents. If an investor does not remit
Federal Funds, its payment must be converted into Federal Funds. This usually
occurs within one business day of receipt of a bank wire and within two
business days of receipt of a check drawn on a member bank of the Federal
Reserve System.
               Page 6
Checks drawn on banks which are not members of the Federal Reserve System may
take considerably longer to convert into Federal Funds. Prior to receipt of
Federal Funds, the investor's money will not be invested.


    The Fund's net asset value per share is determined as of 5:00 p.m.
New York time, on each day that the New York Stock Exchange is open for
business. Net asset value per share of each class is computed by dividing the
value of the Fund's net assets represented by such class (i.e., the value of
its assets less liabilities) by the total number of shares of such class
outstanding. See "Determination of Net Asset Value" in the Fund's Statement
of Additional Information.

        Except in the case of telephone orders, investors whose payments are
received in or converted into Federal Funds by 12:00 Noon, New York time, by
the Custodian, or received in Federal Funds by 12:00 Noon, California time,
by the Sub-custodian, will receive the dividend declared that day. Investors
whose payments are received in or converted into Federal Funds after 12:00
Noon, New York time, by the Custodian, or received in Federal Funds after
12:00 Noon, California time, by the Sub-custodian, will begin to accrue
dividends on the following business day.

        A telephone order placed to Dreyfus Service Corporation in New York
will become effective at the price determined at 5:00 p.m., New York time,
and the shares purchased will receive the dividend on Fund shares declared on
that day if such order is placed by 5:00 p.m., New York time, and Federal
Funds are received by the Custodian by 6:00 p.m., New York time, on that day.
A telephone order placed to Dreyfus Service Corporation in California will
become effective at the price determined at 1:00 p.m., California time, and
the shares purchased will receive the dividend on Fund shares declared on
that day if such order is placed by 12:00 Noon, California time, and Federal
Funds are received by the Sub-custodian by 3:00 p.m., California time, on
that day.

        Federal regulations require that an investor provide a certified
Taxpayer Identification Number ("TIN") upon opening or reopening an account.
See "Dividends, Distributions and Taxes" and the Fund's Account Application
for further information concerning this requirement. Failure to furnish a
certified TIN to the Fund could subject an investor to a $50 penalty imposed
by the Internal Revenue Service (the "IRS").
                              INVESTOR SERVICES

FUND EXCHANGES -- An investor may purchase, in exchange for Class A or Class
B shares of the Fund, shares of Dreyfus Cash Management, Dreyfus Cash
Management Plus, Inc., Dreyfus Government Cash Management, Dreyfus Municipal
Cash Management Plus, Dreyfus New York Municipal Cash Management, Dreyfus Tax
Exempt Cash Management and Dreyfus Treasury Prime Cash Management, which have
different investment objectives that may be of interest to investors. Upon an
exchange into a new account the following shareholder services and
privileges, as applicable and where available, will be automatically carried
over to the fund into which the exchange is being made: Telephone Exchange
Privilege, Redemption by Wire or Telephone, Redemption Through Compatible
Computer Facilities and the dividend/capital gain distribution option
selected by the investor.

        To request an exchange, exchange instructions must be given in
writing or by telephone directed to the address or numbers listed
under "General Information" in this Prospectus. See "How to Redeem Fund
Shares_Procedures." Before any exchange, the investor must obtain and should
review a copy of the current prospectus of the fund into which the exchange
is being made. Prospectuses and further information about the Fund Exchanges
may be obtained also by calling one of the telephone numbers listed under
"General Information." Shares will be exchanged at the net asset value next
determined after receipt of an exchange request in proper form. The exchange
of shares of one fund for shares of another fund is treated for Federal
income tax purposes as a sale of the shares given in exchange by the investor
and, therefore, an exchanging investor may realize a taxable gain or loss. No
fees currently are charged investors directly in connection with exchanges,
although the Fund reserves the right, upon not less than 60 days' written
notice, to charge investors a nominal fee in accordance with rules
promulgated by the Securities and Exchange Commission. The Fund reserves the
right to reject any exchange request in whole or in part. The availability of
Fund exchanges may be modified or terminated at any time upon notice to
investors.

DREYFUS AUTO-EXCHANGE PRIVILEGE -- Dreyfus Auto-Exchange Privilege enables an
Investor to invest regularly (on a semi-monthly, monthly, quarterly or annual
basis), in exchange for Class A or Class B shares of the Fund, in shares of
Dreyfus Cash Management, Dreyfus Cash Management Plus, Inc., Dreyfus
Government Cash Management, Dreyfus
              Page 7
Municipal Cash Management Plus, Dreyfus New York Municipal Cash Management,
Dreyfus Tax Exempt Cash Management or Dreyfus Treasury Prime Cash Management,
if the investor is currently an investor in one of these funds. The amount an
investor designates, which can be expressed either in terms of a specific
dollar or share amount, will be exchanged automatically on the first and/or
fifteenth of the month according to the schedule that the investor has
selected. Shares will be exchanged at the then-current net asset value. The
right to exercise this Privilege may be modified or cancelled by the Fund or
the Transfer Agent. An investor may modify or cancel the exercise of this
Privilege at any time by writing to The Dreyfus Institutional Services
Division, EAB Plaza, 144 Glenn Curtiss Boulevard, 8th Floor, Uniondale,
New York 11556-0144. The Fund may charge a service fee for the use of this
Privilege. No such fee currently is contemplated. The exchange of shares of
one fund for shares of another is treated for Federal income tax purposes as
a sale of the shares given in exchange by the investor and, therefore, an
exchanging investor may realize a taxable gain or loss. For more information
concerning this Privilege and the funds eligible to participate in this
Privilege, or to obtain a Dreyfus Auto-Exchange Authorization Form, please
call in New York State 1-718-895-1650; outside New York State call toll
free 1-800-346-3621.
                         HOW TO REDEEM FUND SHARES
GENERAL -- Investors may request redemption of their shares at any time and
the shares will be redeemed at the next determined net asset value.
        The Fund imposes no charges when shares are redeemed directly through
the Distributor. Service Agents or other institutions may charge their
clients a nominal fee for effecting redemptions of Fund shares. Any share
certificates representing Fund shares being redeemed must be submitted with
the redemption request. The value of the shares redeemed may be more or less
than their original cost, depending upon the Fund's then-current net asset
value.

        If a request for redemption is received in proper form in New
York by 12:00 Noon, New York time, or in Los Angeles by 12:00 Noon,
California time, the proceeds of the redemption, if transfer by wire is
requested, ordinarily will be transmitted in Federal Funds on the same day
and the shares will not receive the dividend declared on that day. If the
request is received later that day in New York or Los Angeles, the shares
will receive the dividend on the Fund's shares declared on that day and the
proceeds of redemption, if wire transfer is requested, ordinarily will be
transmitted in Federal Funds on the next business day.

        The Fund ordinarily will make payment for all shares redeemed within
seven days after receipt by the Transfer Agent of a redemption request in
proper form, except as provided by the rules of the Securities and Exchange
Commission.
PROCEDURES -- Investors may redeem Fund shares by wire or telephone, or
through compatible computer facilities as described below.

        An investor may redeem Fund shares by telephone if the investor has
checked the appropriate box on the Fund's Account Application or has filed a
Shareholder Services Form with the Transfer Agent. If an investor selects a
telephone redemption privilege or exchange privilege (which is automatically
granted unless it is affirmatively refused), the investor authorizes the
Transfer Agent to act on telephone instructions from any person representing
himself or herself to be an authorized representative of the investor, and
reasonably believed by the Transfer Agent to be genuine. The Fund will
require the Transfer Agent to employ reasonable procedures, such as requiring
a form of personal identification, to confirm that instructions are genuine
and, if they do not follow such procedures, the Fund, the Transfer Agent may
be liable for any losses due to unauthorized or fraudulent instructions. The
Fund or the Transfer Agent will not be liable for following telephone
instructions reasonably believe to be genuine.

        During times of drastic economic or market conditions, investors may
experience difficulty in contacting the Transfer Agent by telephone to
request a redemption or exchange of Fund shares. In such cases, investors
should consider using the other redemption procedures described herein.

REDEMPTION BY WIRE OR TELEPHONE -- Investors may redeem Fund shares by wire
or telephone. The redemption proceeds will be paid by wire transfer.
Investors can redeem shares by telephone by calling one of the telephone
numbers listed under "General Information." The Fund reserves the right to
refuse any request made by wire or telephone and may limit the amount
involved or the number of telephone redemptions. This procedure may be
modified or terminated at any time by the Transfer Agent or the Fund. The
Fund's Statement of Additional Information sets forth
               Page 8
instructions for redeeming shares by wire. Shares for which certificates have
been issued may not be redeemed by wire or telephone.

REDEMPTION THROUGH COMPATIBLE COMPUTER FACILITIES -- The Fund makes available
to institutions the ability to redeem shares through compatible computer
facilities. Investors desiring to redeem shares in this manner should call
Dreyfus Service Corporation at one of the telephone numbers listed under
"General Information" in this Prospectus to determine whether their computer
facilities are compatible and to receive instructions for redeeming shares in
this manner.
                                   SERVICE PLAN
                                  (Class B Only)
        Class B shares are subject to a Service Plan adopted pursuant to Rule
12b-1 under the Investment Company Act of 1940. Under the Service Plan, the
Fund (a) reimburses the Distributor for distributing Class B shares and (b)
The Dreyfus Corporation, Dreyfus Service Corporation, a wholly-owned
subsidiary of the Dreyfus Corporation, and any affiliate of either of them
(collectively, "Dreyfus") for advertising and marketing Class B shares and
for providing certain services relating to Class B shareholder accounts, such
as answering shareholder inquiries regarding the Fund and providing reports
and other information, and services related to the maintenance of shareholder
accounts ("Servicing"), at an aggregate annual rate of .25 of 1% of the value
of the average daily net assets of Class B. Each of the Distributor and
Dreyfus may pay one or more Service Agents a fee in respect of the Fund's
Class B shares owned by shareholders with whom the Service Agent has a
Servicing relationship or for whom the Service Agent is the dealer or holder
of record. Each of the Distributor and Dreyfus determines the amounts, if
any, to be paid to Service Agents under the Service Plan and the basis on
which such payments are made. The fee payable for Servicing is intended to be
a "service fee" as defined in Article III, Section 26 of the NASD Rules of
Fair Practice. The fees payable under the Service Plan are payable without
regard to actual expenses incurred.
                             SHAREHOLDER SERVICES PLAN
                                   (Class A Only)
        Class A shares are subject to a Shareholder Services Plan pursuant to
which the Fund has agreed to reimburse Dreyfus Service Corporation an amount
not to exceed an annual rate of .25 of 1% of the value of the average daily
net assets of the Class A shares for certain allocated expenses of providing
personal services to, and/or maintaining accounts of, Class A shareholders.
The services provided may include personal services relating to shareholder
accounts, such as answering shareholder inquiries regarding the Fund and
providing reports and other information, and services related to the
maintenance of shareholder accounts. Pursuant to an undertaking by The
Dreyfus Corporation described under "Management of the Fund," The Dreyfus
Corporation, and not the Fund, currently reimburses Dreyfus Service
Corporation for any such allocated expenses.
                     DIVIDENDS, DISTRIBUTIONS AND TAXES
        The Fund ordinarily declares dividends from net investment income on
each day the New York Stock Exchange is open for business. Fund shares begin
earning income dividends on the day the purchase order is effective.
Dividends usually are paid on the last calendar day of each month, and are
automatically reinvested in additional Fund shares at net asset value or, at
the investor's option, paid in cash. The Fund's earnings for Saturdays,
Sundays and holidays are declared as dividends on the next business day. If
an investor redeems all shares in its account at any time during the month,
all dividends to which the investor is entitled will be paid along with the
proceeds of the redemption. Distributions from net realized securities gains,
if any, generally are declared and paid once a year, but the Fund may make
distributions on a more frequent basis to comply with the distribution
requirements of the Internal Revenue Code of 1986, as amended (the "Code"),
in all events in a manner consistent with the provisions of the Investment
Company Act of 1940. The Fund will not make distributions from net realized
securities gains unless capital loss carryovers, if any, have been utilized
or have expired. Investors may choose whether to receive distributions in cash
or to reinvest in additional Fund shares at net asset value. All expenses
are accrued daily and deducted before declaration of dividends to investors.
Dividends paid by each Class will be calculated at the same time and in the
same manner and
               Page 9
will be of the same amount, except that the expenses attributable solely to
Class A or Class B will be borne exclusively by such Class. Class B shares
will receive lower per share dividends than Class A shares because of the
higher expenses borne by Class B. See "Annual Fund Operating Expenses."
        Dividends derived from net investment income, together with
distributions from any net realized short-term securities gains and all or a
portion of any gain realized from the sale or other disposition of certain
market discount bonds, are taxable for Federal income tax purposes as
ordinary income, whether or not reinvested. No dividend paid by the Fund will
qualify for the dividends received deduction allowable to certain U.S.
corporations. Distributions from net realized long-term securities gains of th
e Fund, if any, generally are taxable as long-term capital gains for Federal
income tax purposes if the beneficial holder of the Fund shares is a citizen
or resident of the United States, regardless of how long shareholders have
held their Fund shares and whether such distributions are received in cash or
reinvested in Fund shares. The Code provides that the net capital gain of an
individual generally will not be subject to Federal income tax at a rate in
excess of 28%.
        Dividends derived from net investment income, together with
distributions from net realized short-term securities gains and all or a
portion of any gain realized from the sale or other disposition of certain
market discount bonds, paid by the Fund with respect to Fund shares
beneficially owned by a foreign person generally are subject to U.S.
nonresident withholding taxes at the rate of 30%, unless the foreign person
claims the benefit of a lower rate specified in a tax treaty. Distributions
from net realized long-term securities gains paid by the Fund with respect to
Fund shares beneficially owned by a foreign person generally will not be
subject to U.S. nonresident withholding tax. However, such distributions may
be subject to a 20% backup withholding, as described below, unless the
foreign person certifies his non-U.S. residency status.
        Notice as to the tax status of dividends and distributions will be
mailed to investors annually. Each investor also will receive periodic
summaries of such investor's account which will include information as to
dividends and distributions from securities gains, if any, paid during the
year. In addition, the Fund intends to provide shareholders with a statement
which sets forth the percentage of dividends paid by the Fund which are
attributable to interest income from direct obligations of the United States.
        Federal regulations generally require the Fund to withhold ("backup
withholding") and remit to the U.S. Treasury 31% of dividends and
distributions from net realized securities gains of the Fund paid to a
shareholder if such shareholder fails to certify either that the TIN
furnished in connection with opening an account is correct, or that such
shareholder has not received notice from the IRS of being subject to backup
withholding as a result of a failure to properly report taxable dividend or
interest income on a Federal income tax return. Furthermore, the IRS may
notify the Fund to institute backup withholding if the IRS determines a
shareholder's TIN is incorrect or if a shareholder has failed to properly
report taxable dividend and interest income on a Federal income tax return.
        A TIN is either the Social Security number or employer identification
number of the record owner of the account. Any tax withheld as a result of
backup withholding does not constitute an additional tax imposed on the
record owner of the account, and may be claimed as a credit on the record
owner's Federal income tax return.
        Management of the Fund believes that the Fund has qualified for the
fiscal year ended July 31, 1994 as a "regulated investment company" under the
Code. The Fund intends to continue to so qualify if such qualification is in
the best interests of its shareholders. Such qualification relieves the Fund
of any liability for Federal income tax to the extent its earnings are
distributed in accordance with applicable provisions of the Code. The Fund is
subject to a non-deductible 4% excise tax, measured with respect to certain
undistributed amounts of taxable investment income and capital gains.
        Dividends and distributions may be subject to certain state and local
taxes. Each investor should consult its tax adviser regarding questions as to
Federal, state or local taxes.
                                GENERAL INFORMATION
        The Fund was organized as an unincorporated business trust under the
laws of the Commonwealth of Massachusetts pursuant to an Agreement and
Declaration of Trust (the "Trust Agreement") dated June 4, 1986, and
commenced operations on September 4, 1986. The Fund is authorized to issue an
unlimited number of shares of beneficial interest, par value $.001 per share.
The Fund's shares are classified into two classes. Each share has one vote
and shareholders will vote in the aggregate and not by class except as to any
matter which affects only one class or as otherwise required by law. Holders
of Class B shares only, however, will be entitled to vote on matters
submitted to shareholders pertaining to the Service Plan.
        On August 5, 1994, the Fund's shareholders approved a proposal to
change, among other things, certain of the Fund's fundamental policies and
investment restrictions to (i) increase the amount the Fund may borrow from
banks for temporary or emergency purposes, (ii) increase the amount of the
Fund's assets that it may pledge to secure such borrowings and make such
policy non-fundamental and (iii) make the Fund's policy regarding investments
in illiquid securities non-fundamental.
        Under Massachusetts law, shareholders could, under certain
circumstances, be held liable for the obligations of the Fund. However, the
Trust Agreement disclaims shareholder liability for acts or obligations of
the Fund and requires that notice of such disclaimer be given in each
agreement, obligation or instrument entered into or executed by the Fund or a
Trustee. The Trust Agreement provides for indemnification from the Fund's
property for all losses and expenses of any shareholder held personally liable
 for the obligations of the Fund. Thus, the risk of a shareholder's incurring
financial loss on account of shareholder liability is limited to
circumstances in which the Fund itself would be unable to meet its
obligations, a possibility which management believes is remote. Upon payment
of any liability incurred by the Fund, the shareholder paying such liability
will be entitled to reimbursement from the general assets of the Fund. The
Trustees intend to conduct the operations of the Fund in such a way so as to
avoid, as far as possible, ultimate liability of the shareholders for
liabilities of the Fund. As described under "Management of the Fund" in the
Statement of Additional Information, the Fund ordinarily will not hold
shareholder meetings; however, shareholders under certain circumstances may
have the right to call a meeting of shareholders for the purpose of voting to
remove Trustees.
        The Transfer Agent maintains a record of each investor's ownership
and sends confirmations and statements of account.
        Investor inquiries may be made by writing to the Fund at 144 Glenn
Curtiss Boulevard, Uniondale, New York 11556-0144, or, in the case of
institutional investors, by calling in New York State 1-718-895-1650; outside
New York State call toll free 1-800-346-3621. Individuals or entities for
whom institutions may purchase or redeem Fund shares should call toll free
1-800-554-4611.
        The Glass-Steagall Act and other applicable laws prohibit Federally
chartered or supervised banks from engaging in certain aspects of the
business of issuing, underwriting, selling and/or distributing securities.
Accordingly, banks will perform only administrative and shareholder servicing
functions. While the matter is not free from doubt, the Fund's Board of
Trustees believes that such laws should not preclude a bank from acting on
behalf of clients as contemplated by this Prospectus. However, judicial or
administrative decisions or interpretations of such laws, as well as changes
in either Federal or state statutes or regulations relating to the
permissible activities of banks and their subsidiaries or affiliates, could
prevent a bank from continuing to perform all or part of the activities
contemplated by this Prospectus. If a bank were prohibited from so acting,
its shareholder clients would be permitted to remain Fund shareholders and
alternative means for continuing the servicing of such shareholders would be
sought. In such event, changes in the operation of the Fund might occur and
shareholders serviced by such bank might no longer be able to avail
themselves of any automatic investment or other services then being provided
by the bank. The Fund does not expect that shareholders would suffer any
adverse financial consequences as a result of any of these occurrences.
        NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS AND IN THE
FUND'S OFFICIAL SALES LITERATURE IN CONNECTION WITH THE OFFER OF THE FUND'S
SHARES, AND, IF GIVEN OR MADE, SUCH OTHER INFORMATION OR REPRESENTATIONS MUST
NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE FUND. THIS PROSPECTUS
DOES NOT CONSTITUTE AN OFFER IN ANY STATE IN WHICH, OR TO ANY PERSON TO WHOM,
SUCH OFFERING MAY NOT LAWFULLY BE MADE.
            Page 11
PROSPECTUS
(LION PICTURE)
DREYFUS
TREASURY
CASH
MANAGEMENT
coyright logo 1994, Dreyfus Service Corporation
521/673p112894





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