PIONEER AMERICA INCOME TRUST
497, 1996-01-29
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(Pioneer Logo)

Pioneer America 
Income Trust 

   
Class A, Class B and Class C Shares 
Prospectus 
April 28, 1995 
(revised January 26, 1996) 
    

   The investment objective of Pioneer America Income Trust (the "Trust") is to
provide as high a level of current income as is consistent with preservation of
capital and prudent investment risk. The Trust seeks to achieve this objective
by investing its assets exclusively in securities backed by the full faith and
credit of the United States ("U.S.") and in "when issued" commitments and
repurchase agreements with respect to such securities.

   Trust returns and share prices fluctuate and the value of your account upon
redemption may be more or less than your purchase price. Shares in the Trust are
not deposits or obligations of, or guaranteed or endorsed by, any bank or other
insured depository institution, and the shares are not federally insured by the
Federal Deposit Insurance Corporation, the Federal Reserve Board or any other
government agency.

   
   This Prospectus (Part A of the Registration Statement) provides information
about the Trust that you should know before investing in the Trust. Please read
and keep it for your future reference. More information about the Trust is
included in Part B, the Statement of Additional Information, also dated April
28, 1995 (revised January 26, 1996), which is incorporated into this Prospectus
by reference. A copy of the Statement of Additional Information may be obtained
free of charge by calling Shareholder Services at 1-800-225-6292 or by written
request to the Trust at 60 State Street, Boston, Massachusetts 02109. Other
information about the Trust has been filed with the Securities and Exchange
Commission (the "SEC") and is available upon request and without charge.
<TABLE>
<CAPTION>
                            TABLE OF CONTENTS                     PAGE 
- ---------   --------------------------------------------------- -------- 
<S>         <C>                                                    <C>
I.          EXPENSE INFORMATION                                     2 
II.         FINANCIAL HIGHLIGHTS                                    3 
III.        INVESTMENT OBJECTIVE AND POLICIES                       4 
             U.S. Government Securities                             4 
             GNMA Certificates                                      4 
             "When-Issued" GNMA Certificates                        5 
IV.         MANAGEMENT OF THE TRUST                                 5 
V.          TRUST SHARE ALTERNATIVES                                6 
VI.         SHARE PRICE                                             7 
VII.        HOW TO BUY TRUST SHARES                                 7 
VIII.       HOW TO SELL TRUST SHARES                               10 
IX.         HOW TO EXCHANGE TRUST SHARES                           11 
X.          DISTRIBUTION PLANS                                     12 
XI.         DIVIDENDS, DISTRIBUTIONS AND TAXATION                  13 
XII.        SHAREHOLDER SERVICES                                   13 
             Account and Confirmation Statements                   13 
             Additional Investments                                13 
             Automatic Investment Plans                            13 
             Financial Reports and Tax Information                 14 
             Distribution Options                                  14 
             Directed Dividends                                    14 
             Direct Deposit                                        14 
             Voluntary Tax Withholding                             14 
             Telephone Transactions and Related Liabilities        14 
             FactFone(SM)                                          14 
             Retirement Plans                                      14 
             Telecommunications Device for the Deaf (TDD)          15 
             Systematic Withdrawal Plans                           15 
             Reinstatement Privilege (Class A Shares Only)         15 
XIII.       THE TRUST                                              15 
XIV.        INVESTMENT RESULTS                                     15 
</TABLE>
    

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND 
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE COMMISSION 
OR ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF 
THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. 

<PAGE>
I. EXPENSE INFORMATION 

   
This table is designed to help you understand the charges and expenses that 
you, as a shareholder, will bear directly or indirectly when you invest in 
the Trust. The table reflects actual expenses for the fiscal year ended 
December 31, 1994. For Class B and Class C shares, operating expenses are 
based on estimated expenses that would have been incurred if they had been 
outstanding for the entire fiscal year ended December 31, 1994. 
<TABLE>
<CAPTION>
 Shareholder Transaction Expenses:             Class A     Class B     Class C+ 
                                              ---------   ---------    -------- 
<S>                                             <C>         <C>         <C>
 Maximum Initial Sales Charge on Purchases 
  (as a percentage of offering price)           4.50%       None        None 
 Maximum Sales Charge on Reinvestment 
    of Dividends                                None        None        None 
 Maximum Deferred Sales Charge (as a 
  percentage of original purchase price 
  or redemption price, as applicable)           None(1)     4.00%       1.00% 
 Redemption Fee(2)                              None        None        None 
 Exchange Fee                                   None        None        None 
Annual Operating Expenses 
   (as a percentage of average net assets): 
 Management Fee (after Fee Reduction)(3)        0.38%       0.38%       0.38% 
 12b-1 Fees                                     0.25%       1.00%       1.00% 
 Other Expenses (including transfer agent 
  fee, custodian fees and accounting and 
  printing expenses)                            0.37%       0.40%       0.40% 
                                              ---------   ---------    -------- 
Total Operating Expenses (after Fee 
   Reduction):(3)                               1.00%       1.78%       1.78% 
                                              =========   =========    ======== 
</TABLE>
    

   
+ Class C shares will first be offered on January 31, 1996. 
(1) Purchases of $1,000,000 or more and purchases by participants of certain 
    group plans are not subject to an initial sales charge but may be subject 
    to a contingent deferred sales charge. 
    

(2) Separate fees (currently $10 and $20, respectively) apply to domestic and 
    international bank wire transfers of redemption proceeds. 

   
(3) Effective January 1, 1994, Pioneering Management Corporation (the 
    "Manager"), agreed not to impose a portion of its management fee and to 
    make other arrangements, if necessary, to limit the Class A shares of the 
    Trust operating expenses of the Trust to 1.00% of its average daily net 
    assets. The portion of fund-wide expenses attributable to Class B and 
    Class C shares will be reduced only to the extent such expenses are 
    reduced for the Class A shares of the Trust. This agreement is voluntary 
    and temporary and may be revised or terminated at any time. 
<TABLE>
<CAPTION>
                                   Class A     Class B      Class C 
                                  ---------   --------    --------- 
<S>                                 <C>         <C>         <C>
Expenses Absent Fee Reduction 
   Management Fee                   0.50%       0.50%       0.50% 
 Total Operating Expenses           1.12%       1.90%       1.90% 

</TABLE>
    

 Example: 

You would pay the following fees and expenses on a $1,000 investment, 
assuming a 5% annual return and redemption at the end of each of the time 
periods: 
   
<TABLE>
<CAPTION>
                           1 Year   3 Years   5 Years   10 Years 
                           -------  --------  -------- ---------- 
<S>                         <C>       <C>      <C>        <C>
Class A Shares              $55       $75      $ 98       $162 
Class B Shares 
 --Assuming complete 
  redemption at end of 
  period                    $58       $86      $116       $189* 
 --Assuming no 
  redemption                $18       $56      $ 96       $189* 
Class C Shares** 
 --Assuming complete 
  redemption at end of 
  period                    $28       $56      $ 96       $219 
 --Assuming no 
  redemption                $18       $56      $ 96       $219 
</TABLE>
    
 *Class B shares convert to Class A shares eight years after purchase; 
  therefore, Class A expenses are used after year eight. 

   
**Class C shares redeemed during the first year after purchase are subject to 
  a 1% Contingent Deferred Sales Charge ("CDSC"). 
    

   
   The example above assumes reinvestment of all dividends and distributions 
and that the percentage amounts listed under "Annual Operating Expenses" 
remain the same each year. 
    

   The example is designed for informational purposes only, and should not be
considered a representation of past or future expenses or return. Actual Trust
expenses and return vary from year to year and may be higher or lower than those
shown.

   For further information regarding management fees, 12b-1 fees and other
expenses of the Trust, including information regarding the basis upon which fees
and expenses are reduced or reallocated, see "Management of the Trust,"
"Distribution Plans" and "How To Buy Trust Shares" in this Prospectus and
"Management of the Trust" and "Underwriting Agreement and Distribution Plans" in
the Statement of Additional Information. The Trust's payment of Rule 12b-1 fees
may result in long-term shareholders indirectly paying more than the economic
equivalent of the maximum initial sales charge permitted under the Rules of Fair
Practice of the National Association of Securities Dealers, Inc.

   
   The maximum initial sales charge is reduced on purchases of specified amounts
and the value of shares owned in other Pioneer mutual funds is taken into
account in determining the applicable initial sales charge. See "How to Buy
Trust Shares." No sales charge is applied to exchanges of shares of the Trust
for shares of other publicly available Pioneer mutual funds. See "How to
Exchange Trust Shares."
    

                                      2 

<PAGE>
II. FINANCIAL HIGHLIGHTS 

   
   The following information has been derived from financial statements of the
Trust which have been audited by Arthur Andersen LLP, independent public
accountants. Arthur Andersen LLP's report on the Trust's financial statements as
of December 31, 1994 appears in the Trust's Annual Report and is incorporated by
reference into the Statement of Additional Information. The information listed
below should be read in conjunction with the financial statements contained in
the Trust's Annual Report. Class C shares are new classes of shares; no
financial highlights exist for Class C shares. The Annual Report includes more
information about the Trust's performance and is available free of charge by
calling Shareholder Services at 1-800-225-6292.
    

Pioneer America Income Trust 
For Each Class A Share Outstanding throughout Each Period: 

<TABLE>
<CAPTION>
                                                        For the Year Ended December 31, 
                                           -------------------------------------------------------- 
                                                                                                        May 31 
                                                                                                          to 
                                                                                                     December 31, 
                                             1994+       1993       1992      1991     1990      1989        1988 
                                           ---------  ---------   --------  -------- --------  --------   --------- 
<S>                                         <C>        <C>        <C>       <C>       <C>       <C>         <C>
Net asset value, beginning of period        $  10.48   $  10.27   $ 10.35   $ 10.03   $ 10.04   $  9.86     $10.00 
                                             -------    -------    ------    ------    ------    ------   --------- 
Income from investment operations: 
 Net investment income                      $   0.66   $   0.68   $  0.73   $  0.84   $  0.87   $  0.90     $ 0.51 
 Net realized and unrealized gain (loss) 
  on investments                               (1.07)      0.24     (0.07)     0.33     (0.02)     0.18      (0.14) 
                                             -------    -------    ------    ------    ------    ------   --------- 
   Total income from investment 
    operations                              $  (0.41)  $   0.92   $  0.66   $  1.17   $  0.85   $  1.08     $ 0.37 
Distribution to shareholders from: 
 Net investment income                         (0.66)     (0.67)    (0.73)    (0.85)    (0.86)    (0.90)     (0.51) 
 Net realized capital gains                     0.00      (0.04)    (0.01)     --        --        --         -- 
                                             -------    -------    ------    ------    ------    ------   --------- 
Net increase (decrease) in net asset 
  value                                     $  (1.07)  $   0.21   $ (0.08)  $  0.32   $ (0.01)  $  0.18     $(0.14) 
Net asset value, end of period              $   9.41   $  10.48   $ 10.27   $ 10.35   $ 10.03   $ 10.04     $ 9.86 
                                             =======    =======    ======    ======    ======    ======   ========= 
Total return*                                  (3.97)%     9.07%     6.67%    12.14%    8.99%    11.49%      3.76% 
Ratio of net operating expenses to 
  average net  assets                           1.00%      1.00%     1.03%     0.75%     0.75%     0.75%      0.67%** 
Ratio of net investment income to average 
  net  assets                                   6.84%      6.37%     7.01%     8.07%     8.75%     9.10%      8.86%** 
Portfolio turnover rate                        60.50%     41.50%    54.50%    36.54%    69.12%    66.06%     61.20%** 
Net assets, end of period (in thousands)    $161,858   $105,892   $85,425   $43,711   $17,160   $10,533     $4,634 
Ratios assuming no reduction of fees or 
  expenses by the Manager: 
  Net operating expenses                        1.12%      1.13%     1.25%     1.75%     1.81%     2.36%      3.01%** 
  Net investment income                         6.72%      6.24%     6.79%     7.07%     7.69%     7.49%      6.52%** 
</TABLE>

For Each Class B Share Outstanding throughout Each Period: 


<TABLE>
<CAPTION>
                                                                    April 29, 1994 
                                                                 to December 31, 1994+ 
                                                                 --------------------- 
<S>                                                                     <C>
Net asset value, beginning of period                                    $ 9.85 
                                                                       ---------- 
Income from investment operations: 
 Net investment income                                                  $ 0.40 
 Net realized and unrealized loss on investments                         (0.45) 
                                                                       ---------- 
   Total loss from investment operations                                $(0.05) 
Distribution to shareholders: 
 From net investment income                                              (0.40) 
Net decrease in net asset value                                         $(0.45) 
                                                                       ---------- 
Net asset value, end of period                                          $ 9.40 
                                                                       ========== 
Total return*                                                            (0.57)% 
Ratio of net operating expenses to average net assets                     1.78%** 
Ratio of net investment income to average net assets                      6.35%** 
Portfolio turnover rate                                                  60.50%** 
Net assets, end of period (in thousands)                                $2,170 
Ratios assuming no reduction of fees or expenses by the 
  Manager: 
  Net operating expenses                                                  1.90%** 
  Net investment income                                                   6.23%** 
</TABLE>

  + Based upon average shares outstanding and average net assets for the 
    period presented. 

  * Assumes initial investment at net asset value at the beginning of each 
    period, reinvestment of all dividends and distributions, the complete 
    redemption of the investment at net asset value at the end of each 
    period, and no sales charges. Total return would be reduced if sales 
    charges were taken into account. 

 ** Annualized. 

*** Class B shares were first offered April 29, 1994. 

                                      3 

<PAGE>
 
III. INVESTMENT OBJECTIVE AND POLICIES 

   The investment objective of the Trust is to provide as high a level of 
current income as is consistent with preservation of capital and prudent 
investment risk. The Trust seeks to achieve this objective by investing its 
assets exclusively in securities backed by the full faith and credit of the 
United States and in "when-issued" commitments and repurchase agreements with 
respect to such securities. The Trust may only invest in securities and 
engage in transactions in securities that are legal under applicable Federal 
law, as of November 17, 1994, for federal credit unions. 

   U.S. Government Securities include (1) U.S. Treasury obligations, which
differ only in their interest rates, maturities and times of issuance: U.S.
Treasury bills (maturities of one year or less), U.S. Treasury notes (maturities
of one to ten years) and U.S. Treasury bonds (generally maturities of greater
than ten years) and (2) obligations of varying maturities issued or guaranteed
by certain agencies and instrumentalities of the U.S. Government, such as
mortgage participation certificates ("GNMA Certificates") guaranteed by the
Government National Mortgage Association ("GNMA") and Federal Housing
Administration ("FHA") debentures, for which the U.S. Treasury unconditionally
guarantees payment of principal and interest. Although the payment when due of
interest and principal on U.S. Government Securities is backed by the full faith
and credit of the United States, this guarantee does not extend to the market
value of these securities and, accordingly, the net asset value of the Trust's
shares will fluctuate.

   The Trust's portfolio will be managed by purchasing and selling 
securities, as well as holding selected securities to maturity. The Trust's 
investment manager employs "cycle analysis" in the management of the Trust's 
portfolio. Cycle analysis is the process of analyzing the business and credit 
cycles of the economy to identify and monitor trends in interest rates and to 
identify debt securities with characteristics most likely to meet the Trust's 
objectives at given stages in all cycles. Relying on analysis of economic 
indicators, as well as price, yield and maturity data of individual 
securities, this process requires ongoing adjustments to the portfolio based 
on the relative values or maturities of individual securities. 

   Any such change in the portfolio may result in increases or decreases in 
the Trust's current income available for distribution to shareholders and in 
its holding of debt securities which sell at moderate to substantial premiums 
or discounts from face value. If the Trust's expectations of changes in 
interest rates or its evaluation of the normal yield relationships between 
two securities prove to be incorrect, the Trust's income, net asset value and 
potential gain may be reduced or its potential loss may be increased. 

   The Trust is free to take advantage of the entire range of maturities 
offered by U.S. Government Securities, and the average maturity of the 
Trust's portfolio may vary significantly. Under normal circumstances, 
however, the dollar weighted average portfolio maturity of the Trust is not 
expected to exceed twenty years. Capital gains will not be a major 
consideration in the selection of investments. The Trust will not normally 
engage in short-term trading but it may do so when it believes a particular 
transaction will contribute to the achievement of its investment objective. 

   The Trust may invest all or any portion of its assets in GNMA Certificates 
but it is not obligated to do so; the portion of its assets so invested will 
vary with management's view of the relative yields and values of GNMA 
Certificates compared to U.S. Treasury obligations. 

   GNMA Certificates are mortgage-backed securities which evidence part 
ownership of a pool of mortgage loans. The mortgages loans are made by 
lenders such as mortgage bankers, commercial banks and savings and loan 
associations, and are insured by the Federal Housing Administration or the 
Farmers' Home Administration ("FHMA"), or guaranteed by the Veterans 
Administration ("VA"). The mortgages are grouped in pools containing 
mortgages which are of similar types and maturities and bear similar interest 
rates. Upon approval by GNMA of a pool, GNMA guarantees the timely payment of 
principal and interest on securities backed by the pool. The GNMA guarantee 
is backed by the full faith and credit of the United States Government. GNMA 
is also empowered to borrow without limitation from the U.S. Treasury if 
necessary to make any payments required under its guarantee. 

   The GNMA Certificates which the Trust purchases are the "modified 
pass-through" type. Modified pass-through certificates entitle the holder to 
receive all principal and interest owned on the mortgages in the pool, net of 
fees paid to the issuer and GNMA, regardless of whether or not the mortgagor 
actually makes the payment. 

   The average life of a GNMA Certificate is likely to be substantially less 
than the original maturity of the underlying mortgage pools because of 
principal prepayments and foreclosures. Foreclosures create no risk to 
principal invested because of the GNMA guarantee. As prepayment rates of 
individual mortgage pools will vary widely, it is not possible to predict 
accurately the average life of a particular issue of GNMA Certificates. 
However, it is customary to treat GNMA Certificates as 30-year 
mortgage-backed securities which prepay fully in the twelfth year. 

   There are several factors that may cause the yield earned by the Trust to 
be substantially different than the coupon rate of interest on the GNMA 
Certificates and other securities held in the Trust's portfolio. First, as 
with any fund consisting of fixed-income securities, repayments and 
prepayments of principal require reinvestment which may be at a lower or 
higher interest rate. This reinvestment risk is increased in the case of GNMA 
Certificates because principal is repaid monthly rather than in a lump sum at 
maturity. Second, prepayments of mortgage-backed GNMA Certificates will tend 
to increase when general interest rates decline, requiring reinvestment at 
the lower market rate. Higher interest rate mortgages will be more prone to 
prepayment. Third, the Trust may purchase GNMA Certificates at a premium or 
discount, rather than at par, causing actual yield to be lower or higher than 
the interest rate on the GNMA Certificates. After issuance, GNMA Certificates 
may also trade in the market at a premium or discount. Upon prepayment, the 
Trust may realize a loss in the amount of any unamortized premiums paid upon 
purchase of GNMA Certificates since prepayment may be at par. 

                                      4 

<PAGE>
 
The values of the U.S. Government Securities, including GNMA Certificates, 
in which the Trust will invest will fluctuate with changes in interest rates. 
Changes in the value of such securities will not affect interest income from 
those obligations but will be reflected in the Trust's net asset value. Thus, 
a decrease in interest rates will generally result in an increase in the 
value of the Trust's shares and conversely during periods of rising interest 
rates the value of the Trust's shares will generally decline. The magnitude 
of these fluctuations will generally be greater when the Trust's average 
maturity is longer. 

   GNMA Certificates may offer yields higher than those available from other
types of U.S. Government Securities, but because of their prepayment aspect may
be less effective than other types of securities as a means of "locking in"
attractive long-term interest rates. This is caused by the need to reinvest
prepayments of principal generally and the possibility of significant
unscheduled prepayments resulting from declines in mortgage interest rates.
These prepayments would have to be reinvested at the lower rates. As a result,
the Trust's GNMA Certificates may have less potential for capital appreciation
during periods of declining interest rates than other U.S. Government Securities
of comparable maturities, although such obligations may have a comparable risk
of decline in market value during periods of rising interest rates.

   GNMA Certificates are highly liquid instruments because of the size of the 
market and the active participation in the secondary market by securities 
dealers and many types of investors. Prices of GNMA Certificates are readily 
available from securities dealers and depend on, among other things, the 
level of market rates, the GNMA Certificate's coupon rate and prepayment 
experience of the pool of mortgages backing each GNMA Certificate. 

   For further information on GNMA Certificates, see "Investment Policies and 
Restrictions" in the Statement of Additional Information. 

   "When-Issued" GNMA Certificates. The Trust may purchase and sell GNMA 
Certificates on a when-issued or a delayed delivery basis. When-issued or 
delayed delivery transactions arise when securities are purchased or sold by 
the Trust with payment and delivery taking place in the future in order to 
secure what is considered to be an advantageous price and yield which is 
fixed at the time of entering into the transaction. However, the yield on a 
comparable GNMA Certificate when the transaction is consummated may vary from 
the yield on the GNMA Certificate at the time that the when- issued or 
delayed delivery transaction was made. Also, the market value of the 
when-issued or delayed delivery GNMA Certificate may increase or decrease as 
a result of changes in general interest rates. When-issued and delayed 
delivery transactions involve risk of loss if the value of the GNMA 
Certificate declines before the settlement date. This risk is in addition to 
the risk of decline in the value of the Trust's other assets. When the Trust 
engages in when-issued and delayed delivery transactions, the Trust relies on 
the seller or buyer, as the case may be, to consummate the transaction. 
Failure of the seller or buyer to do so may result in the Trust missing the 
opportunity of obtaining a price or yield considered to be advantageous. 
However, no payment or delivery is made by the Trust until it receives 
payment or delivery from the other party to the transaction. To the extent 
the Trust engages in when-issued and delayed delivery transactions, it will 
do so for the purpose of acquiring or disposing of GNMA Certificates for the 
Trust's portfolio consistent with the Trust's investment objective and 
policies and not for the purpose of investment leverage. 

   The value of such purchase commitments at any time will not exceed the 
value of the Trust's assets invested in U.S. Treasury Bills and other 
securities having remaining maturities of less than six months. The Trust's 
investments in when-issued or delayed delivery commitments and in repurchase 
agreements (limited to 7 days) may represent up to 25% of its assets. 

   The Trust's investment objective and its policy of investing exclusively 
in U.S. Government Securities and when- issued commitments and repurchase 
agreements with respect to such securities are fundamental policies which may 
not be changed without shareholder approval. Except for these policies and 
certain investment restrictions designated in the Statement of Additional 
Information as fundamental, the investment policies described in this 
Prospectus and in the Statement of Additional Information are not fundamental 
policies. The Trustees may change any non- fundamental investment policies 
without shareholder approval. 

IV. MANAGEMENT OF THE TRUST 

   The Trust's Board of Trustees has overall responsibility for management 
and supervision of the Trust. There are currently eight Trustees, six of whom 
are not "interested persons" of the Trust as defined in the Investment 
Company Act of 1940, as amended (the "1940 Act"). The Board meets at least 
quarterly. By virtue of the functions performed by Pioneering Management 
Corporation as investment adviser, the Trust requires no employees other than 
its executive officers, all of whom receive their compensation from the 
Manager or other sources. The Statement of Additional Information contains 
the names and general background of each Trustee and executive officer of the 
Trust. 

   
   The Trust is managed under a contract with the Manager which serves as 
investment adviser to the Trust and is responsible for the overall management 
of the Trust's business affairs, subject only to the authority of the Board 
of Trustees. The Manager is a wholly-owned subsidiary of The Pioneer Group, 
Inc. ("PGI"), a Delaware corporation. Pioneer Funds Distributor, Inc. 
("PFD"), an indirect wholly-owned subsidiary of PGI, is the principal 
underwriter of shares of the Trust. John F. Cogan, Jr., Chairman and 
President of the Trust, Chairman and a director of the Manager, Chairman of 
PFD, and President and a Director of PGI, owned approximately 15% of the 
outstanding capital stock of PGI as of the date of this Prospectus. 
    

   Each domestic fixed income portfolio managed by the Manager, including the 
Trust, is overseen by the Domestic Fixed 

                                      5 

<PAGE>
 
Income Portfolio Management Committee, which consists of the Manager's most 
senior domestic fixed income professionals. The committee is chaired by David 
D. Tripple, the Manager's President and Chief Investment Officer and 
Executive Vice President of each of the Pioneer funds. Mr. Tripple joined the 
Manager in 1974 and has had general responsibility for the Manager's 
investment operations and specific portfolio assignments for over five years. 
Fixed income investments made by the Manager, including those made on behalf 
of the Trust, are under the general supervision of Sherman B. Russ, Vice 
President of the Manager and the Trust. Mr. Russ joined the Manager in 1983. 

   
   Day-to-day management of the Trust has been the responsibility of Mr. Russ 
since inception. In certain instances where Mr. Russ is unavailable, primary 
responsibility for the day-to-day management of the Trust may be assumed 
temporarily by Richard A. Schlanger who joined the Manager in 1988 and is a 
Vice President. 
    

   In addition to the Trust, the Manager also manages and serves as the 
investment adviser for other mutual funds and is an investment adviser to 
certain other institutional accounts. The Manager's and PFD's executive 
offices are located at 60 State Street, Boston, Massachusetts 02109. 

   
   Under the terms of its contract with the Trust, the Manager assists in the 
management of the Trust and is authorized in its discretion to buy and sell 
securities for the account of the Trust, subject to the right of the Trust's 
Trustees to disapprove any such purchase or sale. The Manager pays all the 
ordinary operating expenses, including executive salaries and the rental of 
office space related to its services for the Trust, with the exception of the 
following which are to be paid by the Trust: (a) charges and expenses for 
fund accounting, pricing and appraisal services and related overhead, 
including, to the extent such services are performed by personnel of the 
Manager or its affiliates, office space and facilities and personnel 
compensation, training and benefits; (b) the charges and expenses of 
auditors; (c) the charges and expenses of any custodian, transfer agent, plan 
agent, dividend disbursing agent and registrar appointed by the Trust with 
respect to shares of the Trust; (d) issue and transfer taxes, chargeable to 
the Trust in connection with securities transactions to which the Trust is a 
party; (e) insurance premiums, interest charges, dues and fees for membership 
in trade associations, and all taxes and corporate fees payable by the Trust 
to federal, state or other governmental agencies; (f) fees and expenses 
involved in registering and maintaining registrations of the Trust and/or its 
shares with the SEC, individual states or blue sky securities agencies, 
territories and foreign countries, including the preparation of Prospectuses 
and Statements of Additional Information for filing with the regulatory 
agencies; (g) all expenses of shareholders' and Trustees' meetings and of 
preparing, printing and distributing prospectuses, notices, proxy statements 
and all reports to shareholders and to governmental agencies; (h) charges and 
expenses of legal counsel to the Trust and to Trustees; (i) distribution fees 
paid by the Trust in accordance with Rule 12b-1 promulgated by the SEC 
pursuant to the 1940 Act; (j) compensation of those Trustees of the Trust who 
are not affiliated with or interested persons of the Manager, the Trust 
(other than as Trustees), PGI or PFD; (k) the cost of preparing and printing 
share certificates; and (l) interest on borrowed money, if any. The Trust 
also pays all brokers' and underwriting commissions chargeable to the Trust 
in connection with its portfolio transactions. 
    

   
   Orders for the Trust's portfolio securities transactions are placed by the 
Manager, which strives to obtain the best price and execution for each 
transaction. In circumstances where two or more broker-dealers are in a 
position to offer comparable prices and execution, consideration may be given 
to whether the broker-dealer provides brokerage or research services or sells 
shares of the Pioneer mutual funds for which PGI or any affiliate or 
subsidiary serves as investment adviser or manager. See the Statement of 
Additional Information for a further description of the Manager's brokerage 
allocation practices. 
    

   As compensation for its management services and certain expenses which the 
Manager incurs, the Manager is entitled to a management fee equal to 0.50% 
per annum of the Trust's average daily net assets. The fee is normally 
computed daily and paid monthly. 

   During the fiscal year ended December 31, 1994, the Trust incurred net 
expenses of $1,414,094, including management fees paid or payable to the 
Manager of $536,625 after reduction pursuant to the Manager's voluntary 
expense limitation agreement. 

   The Manager has agreed not to impose a portion of its management fee and 
to make other arrangements, if necessary to limit certain expenses of the 
Trust to the extent required to reduce Class A expenses to 1.00% of the 
average daily net assets attributable to the Class A shares; the portion of 
the Trust expenses attributable to the Class B shares will only be reduced to 
the extent it is reduced for the Class A shares. This agreement is voluntary 
and temporary and may be terminated by the Manager at any time. During the 
fiscal year ended December 31, 1994, this agreement resulted in a reduction 
of the Trust's management fee of $155,511. 

V. TRUST SHARE ALTERNATIVES 

   
   The Trust continuously offers three Classes of shares designated as Class 
A, Class B and Class C shares, as described more fully in "How to Buy Trust 
Shares." If you do not specify in your instructions to the Trust which Class 
of shares you wish to purchase, exchange or redeem, the Trust will assume 
that your instructions apply to Class A shares. 
    

   Class A Shares. If you invest less than $1 million in Class A shares, you 
will pay an initial sales charge. Certain purchases may qualify for reduced 
initial sales charges. If you invest $1 million or more in Class A shares, no 
sales charge will be imposed at the time of purchase. However, shares 
redeemed within 12 months of purchase may be subject to a contingent deferred 
sales charge ("CDSC"). Class A shares are subject to distribution and service 
fees at a combined annual rate of up to 0.25% of the Trust's average daily 
net assets attributable to Class A shares. 

   Class B Shares. If you plan to invest up to $250,000, Class B shares are 
available to you. Class B shares are sold 

                                      6 

<PAGE>
 
without an initial sales charge, but are subject to a CDSC of up to 4% if 
redeemed within six years. Class B shares are subject to distribution and 
service fees at a combined annual rate of 1.00% of the Trust's average daily 
net assets attributable to Class B shares. Your entire investment in Class B 
shares is available to work for you from the time you make your investment, 
but the higher distribution fee paid by Class B shares will cause your Class 
B shares (until conversion) to have a higher expense ratio and to pay lower 
dividends, to the extent dividends are paid, than Class A shares. Class B 
shares will automatically convert to Class A shares, based on relative net 
asset value, eight years after the initial purchase. 

   
   Class C Shares. Class C shares are sold without an initial sales charge, 
but are subject to a 1% CDSC if they are redeemed within the first year after 
purchase. Class C shares are subject to distribution and service fees at a 
combined annual rate of up to 1.00% of the Trust's average daily net assets 
attributable to Class C shares. Your entire investment in Class C shares is 
available to work for you from the time you make your investment, but the 
higher distribution fee paid by Class C shares will cause your Class C shares 
to have a higher expense ratio and to pay lower dividends, to the extent 
dividends are paid, than Class A shares. Class C shares have no conversion 
feature. 
    

   
   Selecting a Class of Shares. The decision as to which Class to purchase 
depends on the amount you invest, the intended length of the investment and 
your personal situation. If you are making an investment that qualifies for 
reduced sales charges, you might consider Class A shares. If you prefer not 
to pay an initial sales charge on an investment of $250,000 or less and you 
plan to hold the investment for at least six years, you might consider Class 
B shares. If you prefer not to pay an initial sales charge and you plan to 
hold your investment for one to eight years, you may prefer Class C shares. 
    

   Investment dealers and their representatives may receive different 
compensation depending on which Class of shares they sell. Shares may be 
exchanged only for shares of the same Class of another Pioneer mutual fund 
and shares acquired in the exchange will continue to be subject to any CDSC 
applicable to the shares of the Trust originally purchased. Shares sold 
outside the U.S. to persons who are not U.S. citizens may be subject to 
different sales charges, CDSCs and dealer compensation arrangements in 
accordance with local laws and business practices. 

VI. SHARE PRICE 

   
   Shares of the Trust are sold at the public offering price, which is the 
net asset value per share, plus the applicable sales charge. Net asset value 
per share of a Class of the Trust is determined by dividing the fair market 
value of its assets, less liabilities attributable to that Class, by the 
number of shares of that Class outstanding. The net asset value is computed 
once daily, on each day the New York Stock Exchange (the "Exchange") is open, 
as of the close of regular trading on the Exchange. 
    

VII. HOW TO BUY TRUST SHARES 

   
   You may buy Trust shares from any securities broker-dealer which has a 
sales agreement with PFD. If you do not have a securities broker-dealer, 
please call 1-800-225-6292. Shares will be purchased at the public offering 
price, that is, the net asset value per share plus any applicable sales 
charge, next computed after receipt of a purchase order, except as set forth 
below. 
    

   
   The minimum initial investment is $1,000 for Class A, Class B and Class C 
shares except as specified below. The minimum initial investment is $50 for 
Class A accounts being established to utilize monthly bank drafts, government 
allotments, payroll deduction and other similar automatic investment plans. 
Separate minimum investment requirements apply to retirement plans and to 
telephone and wire orders placed by broker-dealers; no sales charges or 
minimum requirements apply to the reinvestment of dividends or capital gains 
distributions. The minimum subsequent investment is $50 for Class A shares 
and $500 for Class B and Class C shares except that the subsequent minimum 
investment amount for Class B and Class C share accounts may be as little as 
$50 if an automatic investment plan is established (see "Automatic Investment 
Plans"). 
    

   Telephone Purchases. Your account is automatically authorized to have the 
telephone purchase privilege unless you indicated otherwise on your Account 
Application or by writing to Pioneering Services Corporation ("PSC"). The 
telephone purchase option may be used to purchase additional shares for an 
existing fund account; it may not be used to establish a new account. Proper 
account identification will be required for each telephone purchase. A 
maximum of $25,000 per account may be purchased by telephone each day. The 
telephone purchase privilege is available to Individual Retirement Accounts 
("IRAs") but may not be available to other types of retirement plan accounts. 
Call PSC for more information. 

   
   You are strongly urged to consult with your financial representative prior 
to requesting a telephone purchase. To purchase shares by telephone, you must 
establish your bank account of record by completing the appropriate section 
of your Account Application or an Account Options Form. PSC will 
electronically debit the amount of each purchase from this predesignated bank 
account. Telephone purchases may not be made for 30 days after the 
establishment of your bank of record or any change to your bank information. 
    

   
   Telephone purchases will be priced at the net asset value plus any 
applicable sales charge next determined after PSC's acceptance of a telephone 
purchase instruction and receipt of good funds (usually three days after the 
purchase instruction). You may always elect to deliver purchases to PSC by 
mail. See "Telephone Transactions and Related Liabilities" for additional 
information. 
    

Class A Shares 

   You may buy Class A shares at the public offering price, that is, at the 
net asset value per share next computed after receipt of a purchase order, 
plus a sales charge as follows: 

                                      7 

<PAGE>
 
<TABLE>
<CAPTION>
                                                   Dealer 
                         Sales Charge as % of     Allowance 
                         ----------------------- 
                                        Net       as a % of 
                         Offering     Amount      Offering 
  Amount of Purchase      Price      Invested       Price 
- ----------------------   ---------- ----------- ----------- 
<S>                        <C>         <C>          <C>
Less than $100,000         4.50%       4.71%        4.00% 
$100,000 but less than 
  $250,000                 3.50        3.63         3.00 
$250,000 but less than 
  $500,000                 2.50        2.56         2.00 
$500,000 but less than 
  $1,000,000               2.00        2.04         1.75 
$1,000,000 or more          -0-         -0-       see below 
</TABLE>

   
   No sales charge is payable at the time of purchase on investments of 
$1,000,000 or more or for participants in certain group plans (described 
below) subject to a CDSC of 1% which may be imposed in the event of a 
redemption of Class A shares within 12 months of purchase. See "How to Sell 
Trust Shares." PFD may, in its discretion, pay a commission to broker-dealers 
who initiate and are responsible for such purchases as follows: 1% on the 
first $5 million invested; 0.50% on the next $45 million; and 0.25% on the 
excess over $50 million. These commissions will not be paid if the purchaser 
is affiliated with the broker-dealer or if the purchase represents the 
reinvestment of a redemption made during the previous 12 calendar months. 
Broker-dealers who receive a commission in connection with Class A share 
purchases at net asset value by 401(a) or 401(k) retirement plans with 1,000 
or more eligible participants or with at least $10 million in plan assets 
will be required to return any commission paid or a pro rata portion thereof 
if the retirement plan redeems its shares within 12 months of purchase. See 
also "How to Sell Trust Shares." In connection with PGI's acquisition of 
Mutual of Omaha Fund Management Company and contingent upon the achievement 
of certain sales objectives, PFD may pay to Mutual of Omaha Investor 
Services, Inc. 50% of PFD's retention of any sales commission on sales of the 
Trust's Class A shares through such dealer. 
    

   The schedule of sales charges above is applicable to purchases of Class A 
shares of the Trust by an (i) an individual, (ii) an individual and his or 
her spouse and children under the age of 21 and (iii) a trustee or other 
fiduciary of a trust estate or fiduciary account or related trusts or 
accounts including pension, profit-sharing and other employee benefit trusts 
qualified under Section 401 or 408 of the Internal Revenue Code of 1986, as 
amended (the "Code"), although more than one beneficiary is involved. The 
sales charges applicable to a current purchase of Class A shares of the Trust 
by a person listed above is determined by adding the value of shares to be 
purchased to the aggregate value (at the then current offering price) of 
shares of any of the other Pioneer mutual funds previously purchased and then 
owned (except the Class A shares of Pioneer Money Market Trust), provided PFD 
is notified by such person or his or her broker-dealer each time a purchase 
is made which would qualify. Pioneer mutual funds include all mutual funds 
for which PFD serves as principal underwriter. See the "Letter of Intention" 
section of the Account Application. 

   
   Qualifying for a Reduced Sales Charge. Class A shares of the Trust may be 
sold at a reduced or eliminated sales charge to certain group plans with 100 
or more participants or at least $500,000 in plan assets ("Group Plans") 
under which a sponsoring organization makes recommendations to, permits group 
solicitation of, or otherwise facilitates purchases by, its employees, 
members or participants. Class A shares of the Trust may be sold at net asset 
value per share without a sales charge to Optional Retirement Program (the 
"Program") participants if (i) the employer has authorized a limited number 
of investment company providers for the Program, (ii) all authorized 
investment company providers offer their shares to Program participants at 
net asset value, (iii) the employer has agreed in writing to actively promote 
the authorized investment providers to Program participants and (iv) the 
Program provides for a matching contribution for each participant 
contribution. Information about such arrangements is available from PFD. 
    

   
   Class A shares of the Trust may be sold at net asset value per share 
without a sales charge to: (a) current or former Trustees and officers of the 
Trust and partners and employees of its legal counsel; (b) current or former 
directors, officers, employees or sales representatives of PGI or its 
subsidiaries; (c) current or former directors, officers, employees or sales 
representatives of any subadviser or predecessor investment adviser to any 
investment company for which the Manager serves as investment adviser, and 
the subsidiaries or affiliates of such persons; (d) current or former 
officers, partners, employees or registered representatives of broker-dealers 
which have entered into sales agreements with PFD; (e) members of the 
immediate families of any of the persons above; (f) any trust, custodian, 
pension, profit-sharing or other benefit plan of the foregoing persons; (g) 
insurance company separate accounts; (h) certain "wrap accounts" for the 
benefit of clients of financial planners adhering to standards established by 
PFD; (i) other funds and accounts for which the Manager or any of its 
affiliates serves as investment adviser or manager; and (j) certain unit 
investment trusts. Shares so purchased are purchased for investment purposes 
and may not be resold except through redemption or repurchase by or on behalf 
of the Trust. The availability of this privilege is conditioned upon the 
receipt by PFD of written notification of eligibility. Class A shares may 
also be sold at net asset value in connection with certain reorganization, 
liquidation, or acquisition transactions involving other investment companies 
or personal holding companies. 
    

   Shares of the Trust may also be sold at net asset value per share without 
a sales charge to clients of a broker-dealer who invest the proceeds from the 
sale or redemption of shares of another investment company, provided that the 
broker-dealer can document that the sale or redemption was complete within 60 
days immediatly preceding the purchase of shares of the Trust. Further 
details may be obtained from PFD. 

   Reduced sales charges for Class A shares are available through an 
agreement to purchase a specified quantity of Trust shares over a designated 
13-month period by completing the "Letter of Intention" section of the 
Account Application. Information about the Letter of Intention Procedure, 
including its terms, is contained in the Statement of Additional Information. 

Class B Shares 

   
   You may buy Class B shares at the net asset value per share next computed 
after receipt of a purchase order with- 
    


                                      8 

<PAGE>
 
out the imposition of an initial sales charge. However, Class B shares 
redeemed within six years of purchase will be subject to a CDSC at the rates 
shown in the table below. The charge will be assessed on the amount equal to 
the lesser of the current market value or the original purchase cost of the 
shares being redeemed. No CDSC will be imposed on increases in account value 
above the initial purchase price, including shares derived from the 
reinvestment of dividends or capital gains distributions. 

   The amount of the CDSC, if any, will vary depending on the number of years 
from the time of purchase until the time of redemption of Class B shares. For 
the purpose of determining the number of years from the time of any purchase, 
all payments during a quarter will be aggregated and deemed to have been made 
on the first day of that quarter. In processing redemptions of Class B 
shares, the Trust will first redeem shares not subject to any CDSC, and then 
shares held longest during the six-year period. As a result, you will pay the 
lowest possible CDSC. 

<TABLE>
<CAPTION>
 Year Since                  CDSC as a Percentage of Dollar 
Purchase                         Amount Subject to CDSC 
- -----------                  ------------------------------ 
<S>                                        <C>
First                                      4.0% 
Second                                     4.0% 
Third                                      3.0% 
Fourth                                     3.0% 
Fifth                                      2.0% 
Sixth                                      1.0% 
Seventh and thereafter                    none 
</TABLE>

   Proceeds from the CDSC are paid to PFD and are used in whole or in part to 
defray PFD's expenses related to providing distribution-related services to 
the Trust in connection with the sale of Class B shares, including the 
payment of compensation to broker-dealers. 

   
   Class B shares will automatically convert into Class A shares at the end 
of the calendar quarter that is eight years after the purchase date, except 
as noted below. Class B shares acquired by exchange from Class B shares of 
another Pioneer mutual fund will convert into Class A shares based on the 
date of the initial purchase and the applicable CDSC. Class B shares acquired 
through reinvestment of distributions will convert into Class A shares based 
on the date of the initial purchase to which such shares relate. For this 
purpose, Class B shares acquired through reinvestment of distributions will 
be attributed to particular purchases of Class B shares in accordance with 
such procedures as the Trustees may determine from time to time. The 
conversion of Class B shares to Class A shares is subject to the continuing 
availability of a ruling from the Internal Revenue Service ("IRS"), for which 
the Trust is applying, or an opinion of counsel that such conversions will 
not constitute taxable events for federal tax purposes. There can be no 
assurance that such ruling or opinion will be available. The conversion of 
Class B shares to Class A shares will not occur if such ruling or opinion is 
not available and, therefore, Class B shares would continue to be subject to 
higher expenses than Class A shares for an indeterminate period. 
    

   
Class C Shares 
    

   
   You may buy Class C shares at net asset value without the imposition of an 
initial sales charge; however, Class C shares redeemed within one year of 
purchase will be subject to a CDSC of 1.00%. The charge will be assessed on 
the amount equal to the lesser of the current market value or the original 
purchase cost of the shares being redeemed. No CDSC will be imposed on 
increases in account value above the initial purchase price, including shares 
derived from the reinvestment of dividends or capital gains distributions. 
Class C shares do not convert to any other Class of Trust shares. 
    

   
   For the purpose of determining the time of any purchase, all payments 
during a quarter will be aggregated and deemed to have been made on the first 
day of that quarter. In processing redemptions of Class C shares, the Trust 
will first redeem shares not subject to any CDSC, and then shares held for 
the shortest period of time during the one-year period. As a result, you will 
pay the lowest possible CDSC. 
    

   
   Proceeds from the CDSC are paid to PFD and are used in whole or in part to 
defray PFD's expenses related to providing distribution-related services to 
the Trust in connection with the sale of Class C shares, including the 
payment of compensation to broker-dealers. 
    

   
   Waiver or Reduction of Contingent Deferred Sales Charge. The CDSC on Class B
shares may be waived or reduced for non-retirement accounts if: (a) the
redemption results from the death of all registered owners of an account (in the
case of UGMAs, UTMAs and trust accounts, waiver applies upon the death of all
beneficial owners) or a total and permanent disability (as defined in Section 72
of the Code) of all registered owners occurring after the purchase of the shares
being redeemed or (b) the redemption is made in connection with limited
automatic redemptions as set forth in "Systematic Withdrawal Plans" (limited in
any year to 10% of the value of the account in the Trust at the time the
withdrawal plan is established).
    

   
   The CDSC on Class B shares may be waived or reduced for retirement plan 
accounts if: (a) the redemption results from the death or a total and 
permanent disability (as defined in Section 72 of the Code) occurring after 
the purchase of the shares being redeemed of a shareholder or participant in 
an employer-sponsored retirement plan; (b) the distribution is to a 
participant in an IRA, 403(b) or employer-sponsored retirement plan, is part 
of a series of substantially equal payments made over the life expectancy of 
the participant or the joint life expectancy of the participant and his or 
her beneficiary or as scheduled periodic payments to a participant (limited 
in any year to 10% of the value of the participant's account at the time the 
distribution amount is established; a required minimum distribution due to 
the participant's attainment of age 70-1/2 may exceed the 10% limit only if 
the distribution amount is based on plan assets held by Pioneer); (c) the 
distribution is from a 401(a) or 401(k) retirement plan and is a return of 
excess employee deferrals or employee contributions or a qualifying hardship 
distribution as defined by the Code or results from a termination of 
employment (limited with respect to a termination to 10% per year of the 
value of the plan's assets in the Trust as of the later of the prior December 
31 or the date the account was established unless the plan's assets are being 
rolled over to or reinvested in the 
    


                                      9 

<PAGE>
 
same class of shares of a Pioneer mutual fund subject to the CDSC of the 
shares originally held); (d) the distribution is from an IRA, 403(b) or 
employer-sponsored retirement plan and is to be rolled over to or reinvested 
in the same class of shares in a Pioneer mutual fund and which will be 
subject to the applicable CDSC upon redemption; (e) the distribution is in 
the form of a loan to a participant in a plan which permits loans (each 
repayment of the loan will constitute a new sale which will be subject to the 
applicable CDSC upon redemption); or (f) the distribution is from a qualified 
defined contribution plan and represents a participant's directed transfer 
(provided that this privilege has been pre-authorized through a prior 
agreement with PFD regarding participant directed transfers). 

   
   The CDSC on Class C shares and on any Class A shares subject to a CDSC may 
be waived or reduced as follows: (a) for automatic redemptions as described 
in "Systematic Withdrawal Plans" (limited to 10% of the value of the account 
subject to the CDSC); (b) if the redemption results from the death or a total 
and permanent disability (as defined in Section 72 of the Code) occurring 
after the purchase of the shares being redeemed of a shareowner or 
participant in an employer-sponsored retirement plan; (c) if the distribution 
is part of a series of substantially equal payments made over the life 
expectancy of the participant or the joint life expectancy of the participant 
and his or her beneficiary; or (d) if the distribution is to a participant in 
an employer-sponsored retirement plan and is (i) a return of excess employee 
deferrals or contributions, (ii) a qualifying hardship distribution as 
defined by the Code, (iii) from a termination of employment, (iv) in the form 
of a loan to a participant in a plan which permits loans, or (v) from a 
qualified defined contribution plan and represents a participant's directed 
transfer (provided that this privilege has been pre-authorized through a 
prior agreement with PFD regarding participant directed transfers). 
    

   
   The CDSC on Class B and Class C shares and on any Class A shares subject 
to a CDSC may be waived or reduced for either non-retirement or retirement 
plan accounts if: (a) the redemption is made by any state, county, or city, 
or any instrumentality, department, authority, or agency thereof, which is 
prohibited by applicable laws from paying a CDSC in connection with the 
acquisition of shares of any registered investment management company; or (b) 
the redemption is made pursuant to the Trust's right to liquidate or 
involuntarily redeem shares in a shareholder's account. 
    

   Broker-Dealers. An order for either Class of Trust shares received by PFD 
from a broker-dealer prior to the close of regular trading on the Exchange is 
confirmed at the price appropriate for that Class as determined at the close 
of regular trading on the Exchange on the day the order is received, provided 
the order is received prior to PFD's close of business (usually, 5:30 p.m. 
Eastern Time). It is the responsibility of broker-dealers to transmit orders 
so that they will be received by PFD prior to its close of business. 

   General. The Trust reserves the right in its sole discretion to withdraw 
all or any part of the offering of shares when, in the judgment of the 
Trust's management, such withdrawal is in the best interest of the Trust. An 
order to purchase shares is not binding on, and may be rejected by, PFD until 
it has been confirmed in writing by PFD and payment has been received. 

VIII. HOW TO SELL TRUST SHARES 

   You can arrange to sell (redeem) Trust shares on any day the Exchange is 
open by selling (redeeming) either some or all of your shares to the Trust. 

   You may sell your shares either through your broker-dealer or directly to 
the Trust. 

   
   (bullet) If you are selling shares from a retirement account, you must 
            make your request in writing (except for exchanges to other 
            Pioneer mutual funds which can be requested by phone or in 
            writing). Call 1-800-622-0176 for a retirement distribution form. 
    

   (bullet) If you are selling shares from a non-retirement account, you may 
            use any of the methods described below. 

   
   Your shares will be sold at the share price next calculated after your 
order is received in good order less any applicable CDSC. Sale proceeds 
generally will be sent to you in cash, normally within seven days after your 
order is received in good order. The Trust reserves the right to withhold 
payment of the sale proceeds until checks received by the Trust in payment 
for the shares being sold have cleared, which may take up to 15 calendar days 
from the purchase date. 
    

   
   In Writing. You may always sell your shares by delivering a written 
request, signed by all registered owners, in good order to PSC, however, you 
must use a written request, including a signature guarantee, to sell your 
shares if any of the following situations applies: 
    

   (bullet) you wish to sell over $50,000 worth of shares, 

   (bullet) your account registration or address has changed within the last 
            30 days, 

   (bullet) the check is not being mailed to the address on your account 
            (address of record), 

   (bullet) the check is not being made out to the account owners, or 

   (bullet) the sale proceeds are being transferred to a Pioneer account with 
            a different registration. 

   Your request should include your name, the Trust's name, your Trust 
account number, the Class of shares to be redeemed, the dollar amount or 
number of shares to be redeemed, and any other applicable requirements as 
described below. Unless instructed otherwise, Pioneer will send the proceeds 
of the sale to the address of record. Fiduciaries or corporations are 
required to submit additional documents. For more information, contact PSC at 
1-800-225-6292. 

   Written requests will not be processed until they are received in good 
order and accepted by PSC. Good order means that there are no outstanding 
claims or requests to hold redemptions on the account, certificates are 
endorsed by the record 

                                      10 

<PAGE>
 
   
owner(s) exactly as the shares are registered and the signature(s) are 
guaranteed by an eligible guarantor. You should be able to obtain a signature 
guarantee from a bank, broker, dealer, credit union (if authorized under 
state law), securities exchange or association, clearing agency or savings 
association. A notary public cannot provide a signature guarantee. Signature 
guarantees are not accepted by facsimile ("fax"). For additional information 
about the necessary documentation for redemption by mail, please contact PSC 
at 1-800-225-6292. 
    

   
   By Telephone or by Fax. Your account is automatically authorized to have 
the telephone redemption privilege unless you indicated otherwise on your 
Account Application or by writing to PSC. Proper account identification will 
be required for each telephone redemption. The telephone redemption option is 
not available to retirement plan accounts. A maximum of $50,000 may be 
redeemed by telephone or fax and the proceeds may be received by check or by 
bank wire or electronic funds transfer. To receive the proceeds by check: the 
check must be made payable exactly as the account is registered and the check 
must be sent to the address of record which must not have changed in the last 
30 days. To receive the proceeds by bank wire or by electronic funds 
transfer: the proceeds must be sent to your bank address of record which must 
have been properly pre-designated either on your Account Application or on an 
Account Options Form and which must not have changed in the last 30 days. To 
redeem by fax send your redemption request to 1-800-225-4240. You may always 
elect to deliver redemption instructions to PSC by mail. See "Telephone 
Transactions and Related Liabilities" below. Telephone and fax redemptions 
will be priced as described above. You are strongly urged to consult with 
your financial representative prior to requesting a telephone redemption. 
    

   Selling Shares Through Your Broker-Dealer. The Trust has authorized PFD to 
act as its agent in the repurchase shares of the Trust from qualified 
broker-dealers and reserves the right to terminate this procedure at any 
time. Your broker-dealer must receive your request before the close of 
business on the Exchange and transmit it to PFD before PFD's close of 
business to receive that day's redemption price. Your broker-dealer is 
responsible for providing all necessary documentation to PFD and may charge 
you for its services. 

   Small Accounts. The minimum account value is $500. If you hold shares of 
the Trust in an account with a net asset value of less than the minimum 
required amount due to redemptions or exchanges, the Trust may redeem the 
shares held in this account at net asset value if you have not increased the 
net asset value of the account to at least the minimum required amount within 
six months of notice by the Trust to you of the Trust's intention to redeem 
the shares. 

   
   CDSC on Class A Shares. Purchases of Class A shares of $1,000,000 or more, 
or by participants in a Group Plan which were not subject to an initial sales 
charge, may be subject to a CDSC upon redemption. A CDSC is payable to PFD on 
these investments in the event of a share redemption within 12 months 
following the share purchase, at the rate of 1% of the lesser of the value of 
the shares redeemed (exclusive of reinvested dividend and capital gain 
distributions) or the total cost of such shares. Shares subject to the CDSC 
which are exchanged into another Pioneer mutual fund will continue to be 
subject to the CDSC until the original 12-month period expires. However, no 
CDSC is payable upon redemption with respect to Class A shares purchased by 
401(a) or 401(k) retirement plans with 1,000 or more eligible participants or 
with at least $10 million in plan assets. 
    

   General.  Redemptions may be suspended or payment postponed during any 
period in which any of the following conditions exist: the Exchange is closed 
or trading on the Exchange is restricted; an emergency exists as a result of 
which disposal by the Trust of securities owned by it is not reasonably 
practicable or it is not reasonably practicable for the Trust to fairly 
determine the value of the net assets of its portfolio; or the SEC, by order, 
so permits. 

   Redemptions and repurchases are taxable transactions to shareholders. The 
net asset value per share received upon redemption or repurchase may be more 
or less than the cost of shares to an investor, depending on the market value 
of the portfolio at the time of redemption or repurchase. 

IX. HOW TO EXCHANGE TRUST SHARES 

   
   Written Exchanges. You may exchange your shares by sending a letter of 
instruction to PSC. Your letter should include your name, the name of the 
Trust out of which you wish to exchange and the name of the Pioneer mutual 
fund into which you wish to exchange, your fund account number(s), the Class 
of shares to be exchanged and the dollar amount or number of shares to be 
exchanged. Written exchange requests must 
be signed by all record owner(s) exactly as the shares are registered. 
    

   
   Telephone Exchanges. Your account is automatically authorized to have the 
telephone exchange privilege unless you indicated otherwise on your Account 
application or by writing to PSC. Proper account identification will be 
required for each telephone exchange. Telephone exchanges may not exceed 
$500,000 per account per day. Each telephone exchange request, whether by 
voice or by FactFone, will be recorded. You are strongly urged to consult 
with your financial representative prior to requesting a telephone exchange. 
See "Telephone Transactions and Related Liabilities" below. 
    

   
   Automatic Exchanges. You may automatically exchange shares from one 
Pioneer mutual fund account for shares of the same Class in another Pioneer 
mutual fund account on a monthly or quarterly basis. The accounts must have 
identical registrations and the originating account must have a minimum 
balance of $5,000. The exchange will be effective on the 18th day of the 
month. 
    

   
   General. Exchanges must be at least $1,000. You may exchange your 
investment from one Class of Trust shares at net asset value, without a sales 
charge, for shares of the same Class of any other Pioneer mutual fund. Not 
all Pioneer mutual funds offer more than one Class of shares. A new Pioneer 
mutual fund account opened through an exchange must have a registration 
identical to that on the original account. 
    
                                      11 

<PAGE>
 
   Class A or Class B shares which would normally be subject to a CDSC upon 
redemption will not be charged the applicable CDSC at the time of an 
exchange. Shares acquired in an exchange will be subject to the CDSC of the 
shares originally held. For purposes of determining the amount of any 
applicable CDSC, the length of time you have owned Class B shares acquired by 
exchange will be measured from the date you acquired the original shares and 
will not be affected by any subsequent exchange. 

   Exchange requests received by PSC before 4:00 p.m. Eastern Time, will be 
effective on that day if the requirements below have been met, otherwise, 
they will be effective on the next business day. PSC will process exchanges 
only after receiving an exchange request in good order. There are currently 
no fees or sales charges imposed at the time of an exchange. An exchange of 
shares may be made only in states where legally permitted. For federal and 
(generally) state income tax purposes, an exchange is considered to be a sale 
of the shares of the fund exchanged and a purchase of shares in another fund. 
Therefore, an exchange could result in a gain or loss on the shares sold, 
depending on the tax basis of these shares and the timing of the transaction, 
and special tax rules may apply. 

   
   You should consider the differences in objectives and policies of the 
Pioneer mutual funds, as described in each fund's current prospectus, before 
making any exchange. For the protection of the Trust's performance and 
shareholders, the Trust and PFD reserve the right to refuse any exchange 
request or restrict, at any time without notice, the number and/or frequency 
of exchanges to prevent abuses of the exchange privilege. Such abuses may 
arise from frequent trading in response to short-term market fluctuations, a 
pattern of trading by an individual or group that appears to be an attempt to 
"time the market," or any other exchange request which, in the view of 
management, will have a detrimental effect on the Trust's portfolio 
management strategy or its operations. In addition, the Trust and PFD reserve 
the right to charge a fee for exchanges or to modify, limit, suspend or 
discontinue the exchange privilege with notice to shareholders as required by 
law. 
    

X. DISTRIBUTION PLANS 

   
   The Trust has adopted a Plan of Distribution for each Class of shares (the 
"Class A Plan," "Class B Plan," and "Class C Plan") in accordance with Rule 
12b-1 under the 1940 Act pursuant to which certain distribution and service 
fees are paid. 
    

   Pursuant to the Class A Plan, the Trust reimburses PFD for its actual 
expenditures to finance any activity primarily intended to result in the sale 
of Class A shares or to provide services to holders of Class A shares, 
provided the categories of expenses for which reimbursement is made are 
approved by the Trust's Board of Trustees. As of the date of this Prospectus, 
the Board of Trustees has approved the following categories of expenses for 
Class A shares of the Trust: (i) a service fee to be paid to qualified 
broker-dealers in an amount not to exceed 0.25% per annum of the Trust's 
daily net assets attributable to Class A shares; (ii) reimbursement to PFD 
for its expenditures for broker-dealer commissions and employee compensation 
on certain sales of the Trust's Class A shares with no initial sales charge 
(See "How to Buy Trust Shares"); and (iii) reimbursement to PFD for expenses 
incurred in providing services to Class A shareholders and supporting 
broker-dealers and other organizations (such as banks and trust companies) in 
their efforts to provide such services. Banks are currently prohibited under 
the Glass-Steagall Act from providing certain underwriting or distribution 
services. If a bank was prohibited from acting in any capacity or providing 
any of the described services, management would consider what action, if any, 
would be appropriate. 

   Expenditures of the Trust pursuant to the Class A Plan are accrued daily 
and may not exceed 0.25% of the Trust's average daily net assets attributable 
to Class A shares. Distribution expenses of PFD are expected to substantially 
exceed the distribution fees paid by the Trust in a given year. The Class A 
Plan may not be amended to increase materially the annual percentage 
limitation of average net assets which may be spent for the services 
described therein without approval of the shareholders of the Trust. The 
Class A Plan does not provide for the carryover of reimbursable expenses 
beyond 12 months from the time the Trust is first invoiced for an expense. 
For the fiscal year ended December 31, 1994, there was an allowable carryover 
of distribution expenses reimbursable to PFD of $38,421 (approximately 0.20% 
of the net assets attributable to the Class A shares of the Trust). 

   
   Both the Class B Plan and the Class C Plan provide that the Trust will pay 
a distribution fee at the annual rate of 0.75% of the Trust's average daily 
net assets attributable to the applicable Class of shares and will pay PFD a 
service fee at the annual rate of 0.25% of the Trust's average daily net 
assets attributable to that Class of shares. The distribution fee is intended 
to compensate PFD for its distribution services to the Trust. The service fee 
is intended to be additional compensation for personal services and/or 
account maintenance services with respect to Class B or Class C shares. PFD 
also receives the proceeds of any CDSC imposed on the redemption of Class B 
or Class C shares. 
    

   
   Commissions of 4%, equal to 3.75% of the amount invested and a first 
year's service fee equal to 0.25% of the amount invested in Class B shares, 
are paid to broker- dealers who have selling agreements with PFD. PFD may 
advance to dealers the first year service fee at a rate up to 0.25% of the 
purchase price of such shares and, as compensation therefor, PFD may retain 
the service fee paid by the Trust with respect to such shares for the first 
year after purchase. Dealers will become eligible for additional service fees 
with respect to such shares commencing in the 13th month following the 
purchase. Commissions of up to 1% of the amount invested in Class C shares, 
consisting of 0.75% of the amount invested and a first year's service fee of 
0.25% of the amount invested, are paid to broker-dealers who have selling 
agreements with PFD. PFD may advance to dealers the first year service fee at 
a rate up to 0.25% of the purchase price of such shares and, as compensation 
therefore, PFD may retain the service fee paid by the Trust with respect to 
such shares for the first year after purchase. Commencing in 
    

                                      12 

<PAGE>
    
the 13th month following the purchase of Class C shares, dealers will become 
eligible for additional annual distribution fees and services fees of up to 
0.75% and 0.25%, respectively, of the purchase price with respect to such 
shares. 
    

   
   Dealers may from time to time be required to meet certain criteria in 
order to receive service fees. PFD or its affiliates are entitled to retain 
all service fees payable under the Class B Plan or the Class C Plan for which 
there is no dealer of record or for which qualification standards have not 
been met as partial consideration for personal services and/or account 
maintenance services performed by PFD or its affiliates for shareholder 
accounts. 
    

XI. DIVIDENDS, DISTRIBUTIONS AND TAXATION 

   The Trust has elected to be treated, has qualified, and intends to qualify 
each year as a "regulated investment company" under Subchapter M of the Code, 
so that it will not pay federal income taxes on income and capital gains 
distributed to shareholders at least annually. 

   Under the Code, the Trust will be subject to a nondeductible 4% excise tax 
on a portion of its undistributed income and capital gains if it fails to 
meet certain distribution requirements for each calendar year. The Trust 
intends to make distributions in a timely manner and accordingly does not 
expect to be subject to the excise tax. 

   Each business day the Trust declares a dividend consisting of 
substantially all of the Trust's net investment income (earned interest 
income less expenses). Shareholders begin earning dividends on the first 
business day following receipt of payment for purchased shares. Shares 
continue to earn dividends up to and including the date of redemption. 
Dividends are normally paid on the last business day of the month or shortly 
thereafter. Monthly distributions, which consist of net investment income and 
may also include a portion of original issue discount or market discount and 
any net short-term capital gains realized by the Trust, are taxable as 
ordinary income. Net long-term capital gains, if any, will be distributed 
annually, in December, or at such additional times as may be necessary to 
avoid federal income or excise tax (after taking into account any capital 
loss carryforwards) and will be taxable as long-term capital gains regardless 
of the shareholder's holding period for the shares. Unless shareholders 
specify otherwise, all distributions will be automatically reinvested in 
additional full and fractional shares of the Trust. For federal income tax 
purposes, all dividends are taxable as described above whether a shareholder 
takes them in cash or reinvests them in additional shares of the Trust. 
Information as to the federal tax status of dividends and distributions will 
be provided annually. For further information on the distribution options 
available to shareholders, see "Distribution Options" and "Directed 
Dividends" below. 

   
   Dividends and other distributions and the proceeds of redemptions or 
repurchases of Trust shares paid to individuals and other non-exempt payees 
will be subject to a 31% federal backup withholding tax if the Trust is not 
provided with the shareholder's correct taxpayer identification number and 
certification that the number is correct and the shareholder is not subject 
to backup withholding or the Trust receives notice from the IRS or a broker 
that such withholding applies. Please refer to the Account Application for 
additional information. 
    

   The description above relates only to U.S. federal income tax consequences 
for shareholders who are U.S. persons, i.e., U.S. citizens or residents or 
U.S. corporations, partnerships, trust or estates, and who are subject to 
U.S. federal income tax. Non-U.S. shareholders and tax-exempt shareholders 
are subject to different tax treatment that is not described above. 
Shareholders should consult their own tax advisors regarding state, local and 
other applicable tax laws. 

XII. SHAREHOLDER SERVICES 

   PSC is the shareholder services and transfer agent for shares of the 
Trust. PSC, a Massachusetts corporation, is a wholly-owned subsidiary of PGI. 
PSC's offices are located at 60 State Street, Boston, Massachusetts 02109, 
and inquiries to PSC should be mailed to Pioneering Services Corporation, 
P.O. Box 9014, Boston, Massachusetts 02205-9014. Brown Brothers Harriman & 
Co. (the "Custodian") serves as custodian of the Trust's portfolio 
securities. The principal business address of the mutual fund division of the 
Custodian is 40 Water Street, Boston, Massachusetts 02109. 

Account and Confirmation Statements 

   PSC maintains an account for each shareholder and all transactions of the 
shareholder are recorded in this account. Confirmation statements showing 
details of transactions are sent to shareholders as transactions occur, 
except Automatic Investment Plan transactions which are confirmed quarterly. 
The Pioneer Combined Account Statement, mailed quarterly, is available to 
shareholders who have more than one Pioneer account. 

   Shareholders whose shares are held in the name of an investment 
broker-dealer or other party will not normally have an account with the Trust 
and might not be able to utilize some of the services available to 
shareholders of record. Examples of services which might not be available are 
investment or redemption of shares by mail or telephone, automatic 
reinvestment of dividends and capital gains distributions, withdrawal plans, 
Letters of Intention, Rights of Accumulation, telephone exchanges, and 
newsletters. 

Additional Investments 

   
You may add to your account by sending a check (minimum of $50 for Class A 
shares and $500 for Class B and Class C shares) to PSC (account number and 
Class of shares should be clearly indicated). The bottom portion of a 
confirmation statement may be used as a remittance slip to make additional 
investments. Additions to your account, whether by check or through a Pioneer 
Investomatic Plan, are invested in full and fractional shares of the Trust at 
the applicable offering price in effect as of the close of regular trading on 
the Exchange on the day of receipt. 
    

Automatic Investment Plans 

   You may arrange for regular automatic investments of $50 or more through 
government/military allotments, payroll 

                                      13 

<PAGE>
 
deduction or through a Pioneer Investomatic Plan. A Pioneer Investomatic Plan 
provides for a monthly or quarterly investment by means of a pre-authorized 
draft drawn on a checking account. Pioneer Investomatic Plan investments are 
voluntary, and you may discontinue the plan at any time without penalty upon 
30 days' written notice. PSC acts as agent for the purchaser, the 
broker-dealer and PFD in maintaining these plans. 

Financial Reports and Tax Information 

   As a shareholder, you will receive financial reports at least 
semiannually. In January of each year, the Trust will mail you information 
about the tax status of dividends and distributions. 

Distribution Options 

   Dividends and capital gains distributions, if any, will automatically be 
invested in additional shares of the Trust, at the applicable net asset value 
per share, unless you indicate another option on the Account Application. 

   Two other options available are (a) dividends in cash and capital gains 
distributions in additional shares; and (b) all dividends and capital gains 
distributions in cash. These two options are not available, however, for 
retirement plans or for an account with a net asset value of less than $500. 
Changes in your distribution options may be made by written request to PSC. 

Directed Dividends 

   You may elect (in writing) to have the dividends paid by one Pioneer 
mutual fund account invested in a second Pioneer mutual fund account. The 
value of this second account must be at least $1,000 ($500 for Pioneer Fund 
or Pioneer II). Invested dividends may be in any amount, and there are no 
fees or charges for this service. Retirement plan shareholders may only 
direct dividends to accounts with identical registrations, i.e., PGA IRA Cust 
for John Smith may only go into another account registered PGA IRA Cust for 
John Smith. 

Direct Deposit 

   If you have elected to take distributions, whether dividends or dividends 
and capital gains, in cash, or have established a Systematic Withdrawal Plan, 
you may choose to have those cash payments deposited directly into your 
savings, checking or NOW bank account. You may also establish this service by 
completing the appropriate section on the Account Application when opening a 
new account or the Account Options Form for an existing account. 

Voluntary Tax Withholding 

   You may request (in writing) that PSC withhold 28% of the dividends and 
capital gains distributions paid from your account (before any reinvestment) 
and forward the amount withheld to the IRS as a credit against your federal 
income taxes. This option is not available for retirement plan accounts or 
for accounts subject to backup withholding. 

Telephone Transactions and Related Liabilities 

   
   Your account is automatically authorized to have telephone transaction 
privileges unless you indicated otherwise on your Account Application or by 
writing to PSC. You may purchase, sell or exchange Trust shares by telephone. 
See "Share Price" for more information. For personal assistance, call 
1-800-225-6292 between 8:00 a.m. and 9:00 p.m. Eastern time on weekdays. 
Computer-assisted transactions may be available to shareholders who have 
pre-recorded certain bank information (see "FactFone(SM)"). You are strongly 
urged to consult with your financial representative prior to requesting any 
telephone transaction. To confirm that each transaction instruction received 
by telephone is genuine, the Trust will record each telephone transaction, 
require the caller to provide the personal identification number ("PIN") for 
the account and send you a written confirmation of each telephone 
transaction. Different procedures may apply to accounts that are registered 
to non-U.S. citizens or that are held in the name of an institution or in the 
name of an investment broker-dealer or other third-party. If reasonable 
procedures, such as those described above, are not followed, the Trust may be 
liable for any loss due to unauthorized or fraudulent instructions. The Trust 
may implement other procedures from time to time. In all other cases, neither 
the Trust, PSC or PFD will be responsible for the authenticity of 
instructions received by telephone, therefore, you bear the risk of loss for 
unauthorized or fraudulent telephone transactions. 
    

   During times of economic turmoil or market volatility or as a result of 
severe weather or a natural disaster, it may be difficult to contact the 
Trust by telephone to institute a redemption or exchange. You should 
communicate with the Trust in writing if you are unable to reach the Trust by 
telephone. 

   
FactFone(SM) 
    

   
   FactFone is an automated inquiry and telephone transaction system 
available to Pioneer shareholders by dialing 1-800-225-4321. FactFone allows 
you to obtain current information on your Pioneer mutual fund accounts and to 
inquire about the prices and yields of all publicly available Pioneer mutual 
funds. In addition, you may use FactFone to make computer-assisted telephone 
purchases, exchanges and redemptions from your Pioneer accounts if you have 
activated your PIN. Telephone purchases and redemptions require the 
establishment of a bank account of record. You are strongly urged to consult 
with your financial representative prior to requesting any telephone 
transaction. Shareholders whose accounts are registered in the name of a 
broker-dealer or other third party may not be able to use FactFone. See "How 
to Buy Trust Shares," "How to Exchange Trust Shares," "How to Sell Trust 
Shares" and "Telephone Transactions and Related Liabilities." Call PSC for 
assistance. 
    

Retirement Plans 

   
   You should contact the Retirement Plans Department of PSC at 
1-800-622-0176 for information relating to retirement plans for businesses, 
age-weighted profit sharing plans, Simplified Employee Pension Plans, IRAs, 
and Section 403(b) retirement plans for employees of certain non-profit 
organizations and public school systems, all of which are available in 
conjunction with investments in the Trust. The Account Application enclosed 
with this Prospectus should not be used to establish any of these plans. 
Separate applications are required. 
    
                                      14 

<PAGE>
 
Telecommunications for the Deaf (TDD) 

   If you have a hearing disability and access to TDD keyboard equipment, you 
can call our TDD number toll-free at 1-800- 225-1997, weekdays from 8:30 a.m. 
to 5:30 p.m. Eastern Time to contact our telephone representatives with 
questions about your account. 

Systematic Withdrawal Plans 

   
   If your account has a total value of at least $10,000 you may establish a 
Systematic Withdrawal Plan ("SWP") providing for fixed payments at regular 
intervals. Withdrawals will be limited to 10% of the value of the account if 
a CDSC is applicable. See "Waiver or Reduction of Contingent Deferred Sales 
Charge" for more information. Periodic payments of $50 or more will be sent 
to you, or any person designated by you, monthly or quarterly and your 
periodic redemptions may be taxable to you. Payments can be made either by 
check or electronic transfer to a bank account designated by you. If you 
direct that withdrawal payments be made to another person after you have 
opened your account, a signature guarantee must accompany your instructions. 
Purchases of Class A shares of the Trust at a time when you have a SWP in 
effect may result in the payment of unnecessary sales charges and may, 
therefore, be disadvantageous. 
    

   You may obtain additional information by calling PSC at 1-800-225-6292 or 
by referring to the Statement of Additional Information. 

Reinstatement Privilege (Class A Shares Only) 

   If you redeem all or part of your Class A shares of the Trust, you may 
reinvest all or part of the redemption proceeds without a sales charge in 
Class A shares of the Trust if you send a written request to PSC not more 
than 90 days after your shares were redeemed. Your redemption proceeds will 
be reinvested at the next determined net asset value of the Class A shares of 
the Trust in effect immediately after receipt of the written request for 
reinstatement. You may realize a gain or loss for federal income tax purposes 
as a result of the redemption, and special tax rules may apply if a 
reinstatement occurs. Subject to the provisions outlined under "How to 
Exchange Trust Shares" above, you may also reinvest in Class A shares of 
other Pioneer mutual funds; in this case, you must meet the minimum 
investment requirement for each fund you enter. 

   The 90-day reinstatement period may be extended by PFD for periods of up 
to one year for shareholders living in areas that have experienced a natural 
disaster, such as a flood, hurricane, tornado or earthquake. 

   The options and services available to shareholders, including the terms of 
the Exchange Privilege and the Pioneer Investomatic Plan, may be revised, 
suspended or terminated at any time by PFD or by the Trust. You may establish 
the services described in this section when you open your account. You may 
also establish or revise many of them on an existing account by completing an 
Account Options Form, which you may request by calling 
1-800-225-6292. 

XIII. THE TRUST 

   Pioneer America Income Trust is an open-end, diversified management 
investment company (commonly referred to as a mutual fund) organized as a 
Massachusetts business trust on March 17, 1988. Prior to July 1, 1994 the 
Trust was named Pioneer U.S. Government Trust. The Trust has authorized an 
unlimited number of shares of beneficial interest. As an open-end management 
investment company, the Trust usually continuously offers its shares to the 
public and under normal conditions must redeem its shares upon the demand of 
any shareholder at the then current net asset value per share. See "How to 
Sell Trust Shares." The Trust is not required, and does not intend, to hold 
annual shareholder meetings, although special meetings may be called for the 
purposes of electing or removing Trustees, changing fundamental investment 
restrictions or approving a management or subadvisory contract. 

   
   The Trustees have the authority, without further shareholder approval, to 
classify and reclassify the shares of the Trust, or any additional series of 
the Trust, into one or more classes. As of the date of this Prospectus, the 
Trustees have authorized the issuance of three classes of shares, designated 
Class A, Class B and Class C. The shares of each class represent an interest 
in the same portfolio of investments of the Trust. Each class has equal 
rights as to voting, redemption, dividends and liquidation, except that each 
class bears different distribution and transfer agent fees and may bear other 
expenses properly attributable to the particular class. Class A, Class B and 
Class C shareholders have exclusive voting rights with respect to the Rule 
12b-1 distribution plans adopted by holders of those shares in connection 
with the distribution of shares. The Trust reserves the right to create and 
issue additional series of shares. 
    

   When issued and paid for in accordance with the terms of the Prospectus 
and Statement of Additional Information, shares of the Trust are fully-paid 
and non-assessable by the Trust. Shares will remain on deposit with the 
Trust's transfer agent and certificates will not normally be issued. The 
Trust reserves the right to charge a fee for the issuance of certificates. 

XIV. INVESTMENT RESULTS 

   The Trust may from time to time include yield information in 
advertisements or in information furnished generally to existing or proposed 
shareholders. Yield information is computed in accordance with the SEC's 
standardized yield formula. The calculation for all Classes is computed by 
dividing the net investment income per share of a Class during a base period 
of 30 days, or one month, by the maximum offering price per share of the 
applicable Class of the Trust on the last day of such base period. The 
resulting "30-day yield" is then annualized as described below. (Net 
investment income per share of a Class is determined by dividing the Trust's 
net investment income attributable to a Class during the base period by the 
average number of shares of that Class of the Trust.) The 30-day yield is 
then "annualized" by a computation that assumes that the net investment 
income per share 

                                      15 

<PAGE>
 
   
of a Class is earned and reinvested for a six-month period at the same rate 
as during the 30-day base period and that the resulting six-month income will 
be generated over an additional six months. 
    

   
   The average annual total return (for a designated period of time) on an 
investment in the Trust may also be included in advertisements, and furnished 
to existing or prospective shareholders. The average annual total return for 
each Class is computed in accordance with the SEC's standardized formula. The 
calculation for all Classes assumes the reinvestment of all dividends and 
distributions at net asset value. In addition, for Class A shares the 
calculation assumes the deduction of the maximum sales charge of 4.50%; for 
Class B and Class C shares the calculation reflects the deduction of any 
applicable CDSC. The periods illustrated would normally include one, five and 
ten years (or since the commencement of the public offering of the shares of 
a Class, if shorter) through the most recent calendar quarter. 
    

   Yield and average annual total return quotations of the Trust do not 
reflect the impact of federal or state income taxes. 

   One or more additional measures and assumptions, including but not limited 
to historical total returns; distribution returns; results of actual or 
hypothetical investments; changes in dividends, distributions or share 
values; or any graphic illustration of such data may also be used. These data 
may cover any period of the Trust's existence and may or may not include the 
impact of sales charges, taxes or other factors. 

   Other investments or savings vehicles and/or unmanaged market indexes, 
indicators of economic activity or averages of mutual funds results may be 
cited or compared with the investment results of the Trust. Rankings or 
listings by magazines, newspapers or independent statistical or rating 
services, such as Lipper Analytical Services, Inc., may also be referenced. 

   The Trust's investment results will vary from time to time depending on 
market conditions, the composition of the Trust's portfolio and operating 
expenses of the Trust. All quoted investment results are historical and 
should not be considered representative of what an investment in the Trust 
may earn in any future period. For further information about the calculation 
methods and uses of the Trust's investment results, see the Statement of 
Additional Information. 

                                      16 
<PAGE>

   
                                    Notes 
    

                                      17 

<PAGE>
 
   
                                    Notes 
    

                                      18 

<PAGE>
 
   
THE PIONEER FAMILY OF MUTUAL FUNDS 

International Growth Funds 

Pioneer International Growth Fund 
Pioneer Europe Fund 
Pioneer Emerging Markets Fund 
Pioneer India Fund 

Growth Funds 

Pioneer Capital Growth Fund 
Pioneer Mid-Cap Fund 
Pioneer Growth Shares 
Pioneer Small Company Fund 
Pioneer Gold Shares 

Growth and Income Funds 

Pioneer Equity-Income Fund 
Pioneer Fund 
Pioneer II 
Pioneer Real Estate Shares 

Income Funds 

Pioneer Short-Term Income Trust 
Pioneer America Income Trust 
Pioneer Bond Fund 
Pioneer Income Fund 

Tax-Free Income Funds 

Pioneer Intermediate Tax-Free Fund* 
Pioneer Tax-Free Income Fund* 
Pioneer New York Triple Tax-Free Fund* 
Pioneer Massachusetts Double Tax-Free Fund* 
Pioneer California Double Tax-Free Fund* 

Money Market Funds 

Pioneer U.S. Government Money Fund 
Pioneer Cash Reserves Fund 

*Not suitable for retirement accounts 
    


                                      19 

<PAGE>
(Pioneer Logo)
 
Pioneer America 
Income Trust 
60 State Street 
Boston, Massachusetts 02109 

OFFICERS 
JOHN F. COGAN, JR., Chairman and President 
DAVID D. TRIPPLE, Executive Vice President 
SHERMAN B. RUSS, Vice President 
WILLIAM H. KEOUGH, Treasurer 
JOSEPH P. BARRI, Secretary 

INVESTMENT ADVISER 
PIONEERING MANAGEMENT CORPORATION 

CUSTODIAN 
BROWN BROTHERS HARRIMAN & CO. 

INDEPENDENT PUBLIC ACCOUNTANTS 
ARTHUR ANDERSEN LLP 

LEGAL COUNSEL 
HALE AND DORR 

PRINCIPAL UNDERWRITER 
PIONEER FUNDS DISTRIBUTOR, INC. 

SHAREHOLDER SERVICES AND TRANSFER AGENT 
PIONEERING SERVICES CORPORATION 
60 State Street 
Boston, Massachusetts 02109 
Telephone: 1-800-225-6292 

SERVICE INFORMATION 

   
If you would like information on the following, please call: 
Existing and new accounts, prospectuses, 
 applications and service forms 
 and telephone transactions ...................... 1-800-225-6292 
FactFone(SM) 
 Automated fund yields, automated prices and 
 account information ..............................1-800-225-4321 
Retirement plans 1-800-622-0176 Toll-free fax .....1-800-225-4240 
Telecommunications Device for the Deaf (TDD) ......1-800-225-1997 
    

   
0196-2966 
(C)Pioneer Funds Distributor, Inc. 
    


<PAGE>

                          PIONEER AMERICA INCOME TRUST
                                 60 State Street
                           Boston, Massachusetts 02109

   
                       STATEMENT OF ADDITIONAL INFORMATION
                       Class A, Class B and Class C Shares

                                 April 28, 1995
                           (revised January 26, 1996)



         This Statement of Additional  Information  (Part B of the  Registration
Statement)  is not a  Prospectus  but  should  be read in  conjunction  with the
Prospectus (the  "Prospectus")  dated April 28, 1995 (revised January 26, 1996),
as amended and/or supplemented from time to time (the "Prospectus"),  of Pioneer
America  Income Trust (the  "Trust").  A copy of the  Prospectus can be obtained
free of charge by calling  Shareholder  Services at 1-800-225-6292 or by written
request to the Trust at 60 State Street, Boston, Massachusetts 02109.
    

                                TABLE OF CONTENTS

                                                                         Page

   
1.  Investment Policies and Restrictions.................................  2
2.  Management of the Trust..............................................  6
3.  Investment Adviser...................................................  9
4.  Principal Underwriter ............................................... 10
5.  Distribution Plans................................................... 11
6.  Shareholder Servicing/Transfer Agent................................. 13
7.  Custodian............................................................ 14
8.  Independent Public Accountants....................................... 14
9.  Portfolio Transactions............................................... 14
10. Tax Status........................................................... 15
11. Description of Shares................................................ 17
12. Certain Liabilities.................................................. 17
13. Letter of Intention.................................................. 18
14. Systematic Withdrawal Plan........................................... 18
15. Determination of Net Asset Value..................................... 19
16. Investment Results................................................... 19
17. Financial Statements................................................. 23
    Appendix A...........................................................A-1
                            -------------------------
    

 THIS STATEMENT OF ADDITIONAL INFORMATION IS NOT A PROSPECTUS AND IS AUTHORIZED
FOR DISTRIBUTION TO PROSPECTIVE INVESTORS ONLY IF PRECEDED OR ACCOMPANIED BY AN
                             EFFECTIVE PROSPECTUS.


<PAGE>



1. INVESTMENT POLICIES AND RESTRICTIONS

         .........The Prospectus presents the investment objective and principal
investment  policies  of the  Trust.  Other  investment  policies  and a further
description of some of the policies described in the Prospectus appear below.

         The following  policies and restrictions  supplement those discussed in
the Prospectus.  Whenever an investment  policy or restriction  states a maximum
percentage  of the  Trust's  assets  that may be  invested  in any  security  or
presents  a  policy  regarding  quality   standards,   this  standard  or  other
restrictions  shall be  determined  immediately  after  and as a  result  of the
Trust's investment. Accordingly, any later increase or decrease resulting from a
change in values,  net assets or other  circumstances  will not be considered in
determining   whether  the  investment  complies  with  the  Trust's  investment
objective and policies.

Additional Information Regarding GNMA Certificates.

         As prepayment rates of individual  mortgage pools will vary widely,  it
is not possible to predict with certainty the average life of a particular issue
of GNMA Certificates. However, statistics published by the FHA are normally used
as an  indicator  of the  expected  average  life  of GNMA  Certificates.  These
statistics  indicate that the average life of single-family  dwelling  mortgages
with 25- to 30-year maturities,  the type of mortgages backing the vast majority
of GNMA  Certificates,  is  approximately  12  years.  For  this  reason,  it is
customary to treat GNMA Certificates as 30-year mortgage-backed securities which
prepay fully in the twelfth year. The actual life of a particular  issue of GNMA
Certificates,  however,  will  depend  on the  coupon  rate  of  the  underlying
mortgages, with higher interest rate mortgages being more prone to prepayment or
refinancing.

         The coupon  rate of  interest  of GNMA  Certificates  is lower than the
interest rate paid on the VA-guaranteed or FHA-insured  mortgages underlying the
GNMA  Certificates,  but only by the  amount  of the  fees  paid to GNMA and the
issuer.  For the most  common type of mortgage  pool,  containing  single-family
dwelling  mortgages,  GNMA  receives  an  annual  fee  of  6/100  of 1%  of  the
outstanding  principal for providing  its  guarantee,  and the issuer is paid an
annual fee of 44/100 of 1% for  assembling  the  mortgage  pool and for  passing
through monthly payments of interest and principal to GNMA Certificate holders.

   
         The coupon rate by itself,  however,  does not  indicate the yield that
will be  earned  on GNMA  Certificates  for the  reasons  given  in the  section
"Investment  Objective and Policies" in the  Prospectus.  In quoting  yields for
GNMA   Certificates,   the  customary  practice  is  to  assume  that  the  GNMA
Certificates will have a 12-year life. Compared on this basis, GNMA Certificates
have  historically  yielded  roughly 25/100 of 1% more than high grade corporate
bonds and 50/100 of 1% more than  United  States  ("U.S.")  Government  and U.S.
Government  agency  bonds.  As the life of  individual  pools  may vary  widely,
however,  the actual yield earned on any issue of GNMA  Certificates  may differ
significantly from the yield estimated on the assumption of a 12-year life.
    

         Since the inception of the GNMA  mortgage-backed  securities program in
1970, the amount of GNMA Certificates outstanding has grown rapidly. The size of
the market and the active  participation  in the secondary  market by securities
dealers and many types of investors  make the GNMA  Certificates a highly liquid
instrument.  Prices of GNMA  Certificates are readily  available from securities
dealers and depend on, among other things,  the level of market  interest


                                      -2-
<PAGE>

rates, the GNMA Certificate's  coupon rate and the prepayment  experience of the
pools of mortgages backing each GNMA Certificate.

Investment Restrictions

 .........The  Trust  has  adopted  certain  additional   fundamental  investment
restrictions  which may not be changed without the approval of a majority of the
Trust's  outstanding  voting  securities.  As used in the  Prospectus  and  this
Statement of Additional  Information,  such  approval  means the approval of the
lesser of (i) the holders of 67% or more of the shares  represented at a meeting
if the holders of more than 50% of the outstanding  shares are present in person
or by proxy, or (ii) the holders of more than 50% of the outstanding shares.

         The Trust may not:

         (1) invest its assets, except in U.S. Government Securities (as defined
in the Prospectus) and in when-issued commitments and repurchase agreements with
respect to these securities;

         (2) borrow money,  except from banks to meet redemptions in amounts not
exceeding  33 1/3%  (taken at the lower of cost or  current  value) of its total
assets  (including  the  amount  borrowed).  The Trust does not intend to borrow
money  during the coming  year,  and will do so only as a temporary  measure for
extraordinary purposes or to facilitate redemptions. The Trust will not purchase
securities while any borrowings are outstanding;

         (3) purchase securities on margin;

         (4) make  loans to any  person,  except by (a) the  purchase  of a debt
obligation  in which  the  Trust is  permitted  to invest  and (b)  engaging  in
repurchase agreements;

         (5)  act  as an  underwriter,  except  as it  may  be  deemed  to be an
underwriter in a sale of restricted securities; or

         (6) issue senior securities, except as permitted by restrictions nos. 2
and 4 above,  and, for purposes of this  restriction,  the issuance of shares of
beneficial  interest  in  multiple  classes or series,  the  purchase or sale of
options,   futures   contracts  and  options  on  futures   contracts,   forward
commitments,  forward  foreign  exchange  contracts  and  repurchase  agreements
entered into in accordance with the Trust's investment policies.

         In order to register its shares in certain jurisdictions, the Trust has
agreed  to  adopt  certain  additional  investment  restrictions  which  are not
fundamental  and may be changed by a vote of the Trust's  Board of Trustees  and
without  shareholder  approval or  notification.  Pursuant  to these  additional
restrictions, the Trust may not:

         (a) make short sales of securities;

         (b) write,  purchase or otherwise invest in any put, call,  straddle or
spread option;

         (c) invest in any security, including any repurchase agreement maturing
in more than seven days,  which is illiquid,  if more than 15% of the net assets
of the Trust, taken at market value, would be invested in such securities;

                                      -3-
<PAGE>

         (d) pledge,  mortgage or hypothecate its portfolio securities if at the
time of such  action  the  value of the  securities  so  pledged,  mortgaged  or
hypothecated would exceed 10% of the value of the Trust;

         (e) invest in warrants;

         (f)  invest  in oil,  gas or other  mineral  leases or  exploration  or
development programs; and

         (g)  purchase  or sell  real  estate,  including  real  estate  limited
partnerships  except that the Fund may (i) acquire or lease office space for its
own use,  (ii)  invest in  securities  of issuers  that invest in real estate or
interests therein, (iii) invest in securities that are secured by real estate or
interests therein,  (iv) purchase and sell  mortgage-related  securities and (v)
hold and sell real estate  acquired by the Fund as a result of the  ownership or
securities.

         In order to  qualify  as  permissible  investment  for  Federal  credit
unions,  the Trust  has  agreed to adopt  the  following  additional  investment
restrictions  which  are not  fundamental  and may be  changed  by a vote of the
Trust's Board of Trustees and without shareholder approval or notification.

         (1) Except as provided in non-fundamental restriction (2), with respect
to each  security  purchased  or  sold by the  Trust:  (1) the  delivery  of the
security will be made within  thirty (30) days from the trade date;  and (2) the
price of the security at the time of purchase will be the market price.

         (2) The Trust may purchases  securities  on a when-issued  or a delayed
delivery basis only in accordance with the following criteria:

                  a. the securities  which are the subject of the when-issued or
         delayed delivery commitment will be marked-to-market daily;

                  b. the delivery of the  securities  subject to the  commitment
         will be made within 120 days after the trade date;

                  c. the price of the security at the time of entering  into the
         commitment will be the market price; and

                  d. the Trust's custodian will maintain in a segregated account
         liquid, high grade debt securities having a value (determined daily) at
         least equal to the amount of the Trust's purchase commitment.

         (3) The Trust may engage in repurchase  agreements which are comparable
to "investment-type" repurchase agreements into which a Federal credit union may
enter.  In all  instances,  the purchase  price of  securities  obtained in such
repurchase  transactions  will  be  at  or  below  the  market  price  for  such
securities.  An  "investment-type"  repurchase  transaction  means a  repurchase
transaction  where the  Federal  credit  union  purchasing  the  security  takes
physical  possession of the security,  or receives  written  confirmation of the
purchase  and a  custodial  or  safekeeping  receipt  from a third party under a
written bailment for hire contract,  or is recorded as the owner of the security
through the Federal Reserve Book-Entry System.

                                      -4-
<PAGE>

         (4) The Trust may not purchase or sell a standby commitment.

         (5) The Trust may not purchase or sell futures  contracts or options on
futures contracts.

         (6) The Trust may not engage in "adjusted  trading."  Adjusted  trading
means any method or  transaction  used to defer a loss whereby the Trust sells a
security to a counterparty  at a price above its  then-current  market price and
simultaneously  purchases or commits to purchase from the  counterparty  another
security at a price above its then-current price.

         (7) Except as provided in  non-fundamental  restriction (10), the Trust
may not purchase stripped mortgage-backed securities ("SMBS").

         (8) Except as provided in  non-fundamental  restriction (10), the Trust
may not purchase or hold a collateralized  mortgage  obligation  ("CMO") or real
estate  mortgage  investment  conduit  ("REMIC") that meets any of the following
three tests:

                  a. Average Life Test. The CMO or REMIC has an expected average
         life greater than 10 years;

                  b. Average Life Sensitivity  Test. The average life of the CMO
         or REMIC:  (a) extends by more then 4 years,  assuming an immediate and
         sustained  parallel  shift in the yield curve of plus 300 basis points;
         or (b)  shortens  by more  than 6  years,  assuming  an  immediate  and
         sustained  parallel shift in the yield curve of minus 300 basis points;
         or

                  c. Price  Sensitivity  Test. The estimated change in the price
         of the CMO or REMIC is more than 17 percent,  due to an  immediate  and
         sustained  parallel shift in the yield curve of plus or minus 300 basis
         points.

         The three tests contained in this non-fundamental  restriction apply at
the time of purchase  and on any  subsequent  retesting  date,  assuming  market
interest rates and prepayment speeds at the time the tests are applied.

         (9) The Trust may not  purchase  residual  interests  in a CMO or REMIC
transaction.

         (10)  Non-fundamental  restrictions  (7) and (8) do not apply  where an
investment in SMBS,  CMOs or REMICs is made solely to reduce  interest rate risk
and where:

                  a. A monitoring and reporting system is in place that provides
         the  documentation  necessary  to  evaluate  the  expected  and  actual
         performance of the investment under different interest rate scenarios;

                  b. The monitoring and reporting  system is used to conduct and
         document an analysis that shows,  prior to purchase,  that the proposed
         investment will reduce the Trust's interest rate risk; and

                  c. The  investment,  subsequent  to purchase,  is evaluated at
         least  quarterly,  to  determine  whether  or not  the  investment  has
         actually reduced the Trust's interest rate risk.


                                      -5-
<PAGE>


2.       MANAGEMENT OF THE TRUST


         The  Trust's  Board of Trustees  provides  broad  supervision  over the
affairs of the Trust.  The officers of the Trust are responsible for the Trust's
operations.  The Trustees and executive  officers of the Trust are listed below,
together  with  their  principal  occupations  during  the past five  years.  An
asterisk indicates those Trustees who are interested persons of the Trust within
the meaning of the Investment Company Act of 1940, as amended (the "1940 Act").

   
JOHN F. COGAN,  JR.*,  Chairman of the Board,  President and Trustee,  DOB: June
1926
         President, Chief Executive Officer and a Director of The Pioneer Group,
Inc.  ("PGI");  Chairman  and a Director of  Pioneering  Management  Corporation
("PMC") and Pioneer  Funds  Distributor,  Inc.  ("PFD");  Director of Pioneering
Services   Corporation   ("PSC"),   Pioneer  Capital   Corporation  ("PCC")  and
Forest-Starma (a Russian  corporation);  President and Director of Pioneer Plans
Corporation  ("PPC"),  Pioneer  Investment  Corp.  ("PIC"),  Pioneer  Metals and
Technology,  Inc. ("PMT"), Pioneer International Corp. ("PIntl"),  Pioneer First
Russia, Inc. ("First Russia") and Pioneer Omega, Inc. ("Omega"); Chairman of the
Board  and  Director  of  Pioneer   Goldfields  Limited  ("PGL")  and  Teberebie
Goldfields  Limited;   Chairman  of  the  Supervisory  Board  of  Pioneer  Fonds
Marketing,  GmbH ("Pioneer  GmbH");  Member of the Supervisory  Board of Pioneer
First Polish Trust Fund Joint Stock Company  ("PFPT");  Chairman,  President and
Trustee of all of the Pioneer  mutual funds and Partner,  Hale and Dorr (counsel
to the Trust).

RICHARD H. EGDAHL, M.D., Trustee,  DOB: December 1926
Boston University Health Policy Institute, 53 Bay State Rd., Boston, MA  02115
        Professor  of  Management,   Boston  University  School  of  Management;
Professor of Public Health, Boston University School of Public Health; Professor
of Surgery,  Boston University School of Medicine;  Director,  Boston University
Health Policy  Institute and Boston  University  Medical Center;  Executive Vice
President and Vice  Chairman of the Board,  University  Hospital;  Academic Vice
President for Health Affairs,  Boston  University;  Director,  Essex  Investment
Management  Company,  Inc.  (investment  adviser),  Health Payment Review,  Inc.
(health care  containment  software firm),  Mediplex Group,  Inc.  (nursing care
facilities firm),  Peer Review Analysis,  Inc. (health care facilities firm) and
Springer-Verlag  New  York,  Inc.  (publisher);   Honorary  Trustee,  Franciscan
Children's Hospital and Trustee of all of the Pioneer mutual funds.

MARGARET B.W. GRAHAM, Trustee,  DOB:  May 1947
The Keep, P.O. Box 110. Little Deer Isle, ME  04650
        Founding  Director,  Winthrop Group, Inc.  (consulting firm) since 1982;
Manager of Research  Operations,  Xerox Palo Alto Research Center,  from 1991 to
1994;  Professor of Operations  Management and Management of Technology,  Boston
University School of Management  ("BUSM"),  from 1989 to 1993 and Trustee of all
of the Pioneer mutual funds, except Pioneer Variable Contracts Trust.

JOHN W. KENDRICK, Trustee,  DOB:  July 1917
6363 Waterway Drive, Falls Church, VA  22044
        Professor  Emeritus and Adjunct Scholar,  George Washington  University;
Economic  Consultant and Director,  American  Productivity  and Quality  Center;
American  Enterprise  Institute and Trustee of all of the Pioneer  mutual funds,
except Pioneer Variable Contracts Trust.
    

                                      -6-
<PAGE>

   
MARGUERITE A. PIRET, Trustee,  DOB:  May 1948
One Boston Place, Suite 2635, Boston, MA 02108
         President,  Newbury,  Piret & Company, Inc. (merchant banking firm) and
Trustee of all of the Pioneer mutual funds.

DAVID D. TRIPPLE*, Trustee and Executive Vice President,  DOB:  February 1944
        Executive  Vice  President  and a  Director  of  PGI;  President,  Chief
Investment  Officer and a Director of PMC;  Director of PFD, PCC,  PIC,  PIntl ,
First Russia,  Omega and Pioneer SBIC Corporation,  Executive Vice President and
Trustee of all of the Pioneer mutual funds.

STEPHEN K. WEST, Trustee,  DOB: September 1928
125 Broad Street, New York, NY  10004
        Partner,  Sullivan & Cromwell (law firm);  Trustee,  The Winthrop  Focus
Funds (mutual funds) and Trustee of all of the Pioneer mutual funds.

JOHN WINTHROP, Trustee,  DOB:  June 1936
One North Adgers Wharf, Charleston, SC  29401
         President,  John  Winthrop  &  Co.,  Inc.  (private  investment  firm);
Director of NUI Corp.; Trustee of Alliance Capital Reserves, Alliance Government
Reserves  and  Alliance  Tax Exempt  Reserves  and Trustee of all of the Pioneer
mutual funds, except Pioneer Variable Contracts Trust.

WILLIAM H. KEOUGH, Treasurer,  DOB:  April 1937
        Senior Vice  President,  Chief  Financial  Officer and Treasurer of PGI;
Treasurer of PFD, PMC, PSC, PCC, PIC, PIntl,  PMT, PGL, First Russia,  Omega and
Pioneer SBIC Corporation;  Treasurer and Director of PPC and Treasurer of all of
the Pioneer mutual funds.

JOSEPH P. BARRI, Secretary, DOB: August 1946
 Secretary of PGI, PMC, PPC, PIC, PIntl, PMT, First Russia, Omega and PCC; Clerk
of PFD and PSC;  Partner,  Hale and Dorr (counsel to the Trust) and Secretary of
all of the Pioneer mutual funds.

ERIC W. RECKARD, Assistant Treasurer, DOB:  June 1956
 Manager  of Fund  Accounting  of PMC  since  May  1994,  Manager  of  Auditing,
Compliance  and  Business  Analysis  for PGI  prior to May  1994  and  Assistant
Treasurer of all of the Pioneer mutual funds.

ROBERT P. NAULT, Assistant Secretary, DOB:   March 1964
        General  Counsel and  Assistant  Secretary of PGI since 1995;  Assistant
Secretary of PMC, PIntl, PGL, First Russia,  Omega and all of the Pioneer mutual
funds; Assistant Clerk of PFD and PSC; and formerly of Hale and Dorr (counsel to
the Trust) where he most recently served as junior partner.

SHERMAN B. RUSS,  Vice President, DOB:   July 1937
         Senior Vice  President  of PMC;  Vice  President  of Pioneer Bond Fund.
Pioneer Money Market Trust, and Pioneer Interest Shares, Inc.
    

         The Trust's Amended and Restated Declaration of Trust (the "Declaration
of Trust") provides that the holders of two-thirds of its outstanding shares may
vote to  remove a Trustee  of the  Trust at any  meeting  of  shareholders.  See
"Description of Shares" below.  The business address of all officers is 60 State
Street, Boston, Massachusetts 02109.

                                      -7-
<PAGE>

         All of the  outstanding  capital  stock of PFD,  PMC and PSC is  owned,
directly or indirectly, by PGI, a publicly-owned Delaware corporation.  PMC, the
Trust's  investment  adviser,  serves as the investment  adviser for the Pioneer
mutual funds listed below and manages the  investments of certain  institutional
accounts.

         The table below lists all the Pioneer mutual funds currently offered to
the public and the investment adviser and principal underwriter for each fund.



<PAGE>



                                               Investment      Principal
Fund Name                                        Adviser      Underwriter

   
Pioneer International Growth Fund                  PMC            PFD
Pioneer Europe Fund                                PMC            PFD
Pioneer Emerging Markets Fund                      PMC            PFD
Pioneer India Fund                                 PMC            PFD
Pioneer Capital Growth Fund                        PMC            PFD
Pioneer Mid-Cap Fund                               PMC            PFD
Pioneer Growth Shares                              PMC            PFD
Pioneer Small Company Fund                         PMC            PFD
Pioneer Gold Shares                                PMC            PFD
Pioneer Equity-Income Fund                         PMC            PFD
Pioneer Fund                                       PMC            PFD
Pioneer II                                         PMC            PFD
Pioneer Real Estate Shares                         PMC            PFD
Pioneer Short-Term Income Trust                    PMC            PFD
Pioneer America Income Trust                       PMC            PFD
Pioneer Bond Fund                                  PMC            PFD
Pioneer Income Fund                                PMC            PFD
Pioneer Intermediate Tax-Free Fund                 PMC            PFD
Pioneer Tax-Free Income Fund                       PMC            PFD
Pioneer New York Triple Tax-Free Fund              PMC            PFD
Pioneer Massachusetts Double Tax-Free Fund         PMC            PFD
Pioneer California Double Tax-Free Fund            PMC            PFD
Pioneer U.S. Government Money Fund                 PMC            PFD
Pioneer Cash Reserves Fund                         PMC            PFD
Pioneer Interest Shares, Inc.                      PMC          Note 1
Pioneer Variable Contracts Trust                   PMC          Note 2
    

Note 1   This fund is a closed-end fund.

Note 2   This is a series of eight  separate  portfolios  designed  to provide
         investment   vehicles  for  the  variable  annuity  and  variable  life
         insurance  contracts  of various  insurance  companies  or for  certain
         qualified pension plans.

                                      -8-
<PAGE>

         To the knowledge of the Trust, no officer or Trustee of the Trust owned
5% or more of the  issued and  outstanding  shares of PGI as of the date of this
Statement  of   Additional   Information,   except  Mr.  Cogan  who  then  owned
approximately 15% of such shares.

         The Trust pays no salaries or compensation to any of its officers.  The
Trust  pays an  annual  trustees'  fee of $100,  and a payment  of  $1,000  plus
expenses per meeting  attended,  to each Trustee who is not affiliated with PMC,
PFD or PSC and  pays an  annual  trustees'  fee of $500  plus  expenses  to each
Trustee affiliated with PMC, PFD or PSC.

                                                             Total Compensa-

                                                               tion from the
                                             Pension or       Trust and other
                             Aggregate       Retirement        funds in the
                           Compensation       Benefits        Pioneer Family
Director                  From the Trust      Accrued        of Mutual Funds**

John F. Cogan, Jr.            $ 500*            $0               $11,750*
Richard H. Egdahl, M.D.       3,100              0                55,650
Margaret B.W. Graham          3,100              0                55,650
John W. Kendrick              3,100              0                55,650
Marguerite A. Piret           4,100              0                66,650
David D. Tripple                500*             0                 9,000*
Stephen K. West               3,700              0                63,650
John Winthrop                 3,700              0                63,650


- --------
*    PMC fully reimbursed the Trust and the other funds in the Pioneer Family of
     Mutual Funds for compensation paid to Messrs. Cogan and Tripple.

**   For the calendar year ended December 31, 1994.

         Any such fees and expenses paid to affiliates or interested  persons of
PMC, PFD or PSC are reimbursed to the Trust under its Management Contract. As of
the date of this Statement of Additional Information,  the Trustees and officers
of the Trust owned beneficially in the aggregate less than 1% of the outstanding
shares of the Trust. As of such date, no person beneficially owned 5% or more of
the outstanding shares of the Trust.

3.  INVESTMENT ADVISER

         The  Trust  has   contracted   with  PMC,  60  State  Street,   Boston,
Massachusetts, to act as its investment adviser. The term of the contract is one
year, but it is renewable  annually after such date by the vote of a majority of
the  Board of  Trustees  of the  Trust  (including  a  majority  of the Board of
Trustees who are not parties to the contract or  interested  persons of any such
parties). The vote must be cast in person at a meeting called for the purpose of
voting  on  such  renewal.  This  contract  terminates  if  assigned  and may be
terminated  without penalty by either party by vote of its Board of Directors or
Trustees or a majority of its  outstanding  voting  securities and the giving of
sixty  days'  written  notice.  The  management  contract  was  approved  by the
shareholders of the Trust at a meeting of shareholders held on December 6, 1993.
As  compensation  for its 


                                      -9-
<PAGE>

management  services and expenses incurred,  PMC is entitled to a management fee
at the rate of 0.60% per annum of the Trust's average daily net assets.  The fee
is normally computed and accrued daily and paid monthly.

   
         On an interim basis, PMC has voluntarily agreed not to impose a portion
of its management  fee and to make other  arrangements,  if necessary,  to limit
certain  other  expenses  of the Trust to the extent  required  to reduce  total
expenses to 1.00% of the average  daily net assets  attributable  to the Class A
shares.  The  Trust's  management  fee  will  only  be  imposed  on  the  assets
attributable  to the Class B and Class C shares to the  extent it is  imposed on
the assets  attributable to the Class A shares.  See "Expense  Information"  and
"Management  of the  Trust" in the  Prospectus.  PMC's  agreement  to reduce the
management  fee is voluntary  and  temporary and may be revised or terminated by
PMC at any time.
    

         Pursuant to the expense limitation  discussed above,  during the fiscal
years ended December 31, 1994,  1993 and 1992, the Trust's  management fees were
reduced by $155,511,  $133,160 and $151,423,  respectively,  resulting in actual
management  fees paid during  these  periods to PMC of  $692,136,  $587,361  and
$264,136,  respectively.  See  the  Notes  to the  Financial  Statements  in the
December 31, 1994 Annual  Report  (incorporated  herein by  reference)  for more
information.

   
         In  an  attempt  to  avoid  any  potential   conflict  with   portfolio
transactions  for the Trust,  the Adviser and the Trust have  adopted  extensive
restrictions on personal  securities trading by personnel of the Adviser and its
affiliates. These restrictions include: pre-clearance of all personal securities
transactions  and a  prohibition  of  purchasing  initial  public  offerings  of
securities.  These  restrictions  are a continuation of the basic principle that
the interests of the Trust and its shareholders come before those of the Adviser
and its employees.
    

4.       PRINCIPAL UNDERWRITER

         PFD, 60 State Street,  Boston,  Massachusetts,  serves as the principal
underwriter  for the Trust in  connection  with the  continuous  offering of the
shares of the Trust pursuant to an  Underwriting  Agreement dated July 10, 1990.
The  Trustees  who are not,  and were not at the  time  they  voted,  interested
persons of the Trust,  as defined  in the 1940 Act,  approved  the  Underwriting
Agreement.  The  Underwriting  Agreement  will  continue  from  year  to year if
annually  approved by the  Trustees.  During the  Trust's  fiscal  years  ending
December 31, 1994, 1993 and 1992, net underwriting  commissions  retained by PFD
in  connection  with the  offering of Trust shares were  approximately  $76,256,
$58,571 and $97,090,  respectively.  Commissions  reallowed to dealers by PFD in
those periods were approximately $543,725, $504,896 and $845,975, respectively.

         PFD  bears all  expenses  it incurs  in  providing  services  under the
Underwriting Agreement.  Such expenses include compensation to its employees and
representatives and to securities dealers for distribution related services. PFD
also pays certain  expenses in connection  with the  distribution of the Trust's
shares,  including the cost of preparing,  printing and distributing advertising
or promotional materials, and the cost of printing and distributing prospectuses
and  supplements  to  prospective  shareholders.  The  Trust  bears  the cost of
registering its shares under federal and state securities law. The Trust and PFD
have agreed to  indemnify  each other  against  certain  liabilities,  including
liabilities under the Securities Act of 1933, as amended. Under the Underwriting
Agreement, PFD will use its best efforts in rendering services to the Trust.

                                      -10-
<PAGE>

         The Trust will not generally issue Trust shares for consideration other
than cash. At the Trust's sole  discretion,  however,  it may issue Trust shares
for consideration other than cash in connection with a bona fide reorganization,
statutory  merger or other  acquisition  of  portfolio  securities  (other  than
municipal  debt  securities  issued  by state  political  subdivisions  or their
agencies or  instrumentalities)  provided (i) the securities meet the investment
objectives  and policies of the Trust;  (ii) the  securities are acquired by the
Trust for investment and not for resale;  (ii) the securities are not restricted
as to transfer  either by law or  liquidity of market;  and (iv) the  securities
have a value  which  is  readily  ascertainable  (and  not  established  only by
evaluation  procedures) as evidenced by a listing on the American Stock exchange
or the New York Stock Exchange or by quotation under the NASDAQ National Market.
An  exchange  of  securities  for  Trust  shares  will  generally  be a  taxable
transaction to the shareholder.

5.       DISTRIBUTION PLANS

   
         The Trust has  adopted  plans of  distribution  pursuant  to Rule 12b-1
promulgated by the Securities and Exchange Commission ("SEC") under the 1940 Act
with  respect  to Class A, Class B and Class C shares  (the  "Class A Plan," the
"Class B Plan" and the "Class C Plan") (together, the "Plans").
    

Class A Plan

   
         Pursuant  to the  Class A Plan,  the Trust  may  reimburse  PFD for its
expenditures in financing any activity  primarily intended to result in the sale
of the Class A Plan shares.  Certain  categories of such  expenditures have been
approved  by the  Board of  Trustees  and are set forth in the  Prospectus.  See
"Distribution  Plans" in the  Prospectus.  The expenses of the Trust pursuant to
the Class A Plan are  accrued  daily at a rate  which may not  exceed the annual
rate of 0.25% of the Trust's  average daily net assets  attributable  to Class A
shares.  The Class A Plan became effective on October 15, 1990. The Class A Plan
does not provide for the carryover of reimbursable expenses beyond twelve months
from the time they are incurred.
    

Class B Plan

         The Class B Plan  provides that the Trust shall pay PFD, as the Trust's
distributor for its Class B shares, a daily  distribution fee equal on an annual
basis to 0.75% of the Trust's  average daily net assets  attributable to Class B
shares  and will pay PFD a  service  fee equal to 0.25% of the  Trust's  average
daily net assets  attributable  to Class B shares (which PFD will in turn pay to
securities  dealers which enter into a sales  agreement with PFD at a rate of up
to 0.25% of the Trust's average daily net assets  attributable to Class B shares
owned by investors  for whom that  securities  dealer is the holder or dealer of
record).  This service fee is intended to be consideration for personal services
and/or account maintenance services rendered by the dealer with respect to Class
B shares.  PFD will  advance to dealers  the first-  year  service fee at a rate
equal to 0.25% of the amount invested. As compensation  therefor, PFD may retain
the service fee paid by the Trust with respect to such shares for the first year
after purchase.  Dealers will become  eligible for additional  service fees with
respect to such shares  commencing in the thirteenth  month following  purchase.
Dealers  may from time to time be  required to meet  certain  other  criteria in
order to receive  service fees. PFD or its affiliates are entitled to retain all
service  fees  payable  under the  Class B Plan for which  there is no dealer of
record  or for  which  qualification  standards  have not  been  met as  partial
consideration  for  personal  services  and/or  account   maintenance   services
performed by PFD or its affiliates for shareholder accounts.

                                      -11-
<PAGE>

         The purpose of  distribution  payments to PFD under the Class B Plan is
to  compensate  PFD  for  its  distribution  services  to the  Trust.  PFD  pays
commissions to dealers as well as expenses of printing  prospectuses and reports
used for sales  purposes,  expenses with respect to the preparation and printing
of sales literature and other distribution related expenses,  including, without
limitation,  the cost  necessary to provide  distribution-  related  services or
personnel, travel, office expenses and equipment. The Class B Plan also provides
that  PFD  will  receive  all  contingent   deferred  sales  charges   ("CDSCs")
attributable to Class B shares. (See "Distribution Plans" in the Prospectus.)

   
Class C Plan
    

   
         The Class C Plan  provides  that the Trust will pay PFD, as the Trust's
distributor  for its Class C shares,  a distribution  fee accrued daily and paid
quarterly,  equal on an annual basis to 0.75% of the Trust's  average  daily net
assets  attributable  to Class C shares and will pay PFD a service  fee equal to
0.25% of the Trust's  average daily net assets  attributable  to Class C shares.
PFD will in turn pay to securities  dealers  which enter into a sales  agreement
with PFD a distribution fee and a service fee at rates of up to 0.75% and 0.25%,
respectively,  of the Trust's  average daily net assets  attributable to Class C
shares  owned by  investors  for whom that  securities  dealer is the  holder or
dealer of record. The service fee is intended to be in consideration of personal
services and/or account maintenance services rendered by the dealer with respect
to Class C shares.  PFD will advance to dealers the first-year  service fee at a
rate equal to 0.25% of the amount invested.  As compensation  therefor,  PFD may
retain the  service  fee paid by the Trust with  respect to such  shares for the
first year after  purchase.  Commencing  in the  thirteenth  month  following  a
purchase of Class C shares,  dealers will become eligible for additional service
fees at a rate of up to 0.25% of the amount invested and additional compensation
at a rate of up to 0.75% of the amount  invested  with  respect to such  shares.
Dealers  may from time to time be  required to meet  certain  other  criteria in
order to receive  service fees. PFD or its affiliates are entitled to retain all
service  fees  payable  under the  Class C Plan for which  there is no dealer of
record  or for  which  qualification  standards  have not  been  met as  partial
consideration  for  personal  services  and/or  account   maintenance   services
performed by PFD or its affiliates for shareholder accounts.
    

         The purpose of  distribution  payments to PFD under the Class C Plan is
to  compensate  PFD for its  distribution  services  with respect to the Class C
shares of the Trust.  PFD pays  commissions  to dealers as well as  expenses  of
printing prospectuses and reports used for sales purposes, expenses with respect
to   the   preparation   and   printing   of   sales    literature   and   other
distribution-related expenses, including, without limitation, the cost necessary
to provide  distribution-related  services, or personnel, travel office expenses
and  equipment.  The Class C Plan also  provides that PFD will receive all CDSCs
attributable to Class C shares. (See "Distributions Plans" in the Prospectus.)

General

         In  accordance  with the terms of the Plans,  PFD provides to the Trust
for review by the Trustees a quarterly  written  report of the amounts  expended
under the respective Plan and the purpose for which such expenditures were made.
In the Trustees' quarterly review of the Plans, they will consider the continued
appropriateness  and the  level  of  reimbursement  or  compensation  the  Plans
provide.

         No interested  person of the Trust, nor any Trustee of the Trust who is
not an  interested  person of the Trust,  has any direct or  indirect  financial
interest in the operation of the Plans except 


                                      -12-
<PAGE>

to the extent that PFD and certain of its  employees  may be deemed to have such
an interest as a result of receiving a portion of the amounts expended under the
Plans by the  Trust  and  except  to the  extent  certain  officers  may have an
interest in PFD's ultimate parent, PGI.

         The Plans were  adopted by a  majority  vote of the Board of  Trustees,
including  all of the Trustees who are not, and were not at the time they voted,
interested persons of the Trust, as defined in the 1940 Act (none of whom has or
have any direct or indirect  financial  interest in the  operation of the Plans)
(the "Qualified  Trustees"),  cast in person at a meeting called for the purpose
of voting on the Plans.  In approving  the Plans,  the Trustees  identified  and
considered a number of potential benefits which the Plans may provide. The Board
of Trustees  believes that there is a reasonable  likelihood that the Plans will
benefit the Trust and its current and future  shareholders.  Under their  terms,
the Plans  remain  in effect  from year to year  provided  such  continuance  is
approved  annually by vote of the Trustees in the manner  described  above.  The
Plans may not be amended to increase materially the annual percentage limitation
of average  net assets  which may be spent for the  services  described  therein
without approval of the shareholders of the Trust affected thereby, and material
amendments  of the Plans must also be  approved  by the  Trustees  in the manner
described  above. A Plan may be terminated at any time,  without  payment of any
penalty,  by vote of the majority of the Trustees who are not interested persons
of the Trust and have no direct or indirect financial interest in the operations
of the Plan, or by a vote of a majority of the outstanding  voting securities of
the  respective  Class of the Trust (as  defined in the 1940  Act).  A Plan will
automatically  terminate in the event of its  assignment (as defined in the 1940
Act). In the  Trustees'  quarterly  review of the Plans,  they will consider the
Plans' continued appropriateness and the level of compensation they provide.

   
         During the fiscal year ended  December  31,  1994,  the Trust  incurred
distribution  fees of $344,155  pursuant to the Class A Plan and $7,649 pursuant
to the  Class B Plan.  The  distribution  fees  were paid by the Trust to PFD in
reimbursement  of expenses  related to servicing of shareholder  accounts and to
compensating dealers' sales personnel. As of the date of this SAI, the Trust has
not incurred any distribution  fees pursuant to the Class C Plan. Class C shares
will first be offered January 31, 1996.
    

6.       SHAREHOLDER SERVICING/TRANSFER AGENT

         The  Trust  has   contracted   with  PSC,  60  State  Street,   Boston,
Massachusetts, to act as shareholder servicing and transfer agent for the Trust.
This contract  terminates if assigned and may be terminated  without  penalty by
either  party by vote of its Board of Directors or Trustees or a majority of its
outstanding voting securities and the giving of ninety days' written notice.

         Under  the  terms  of  its  contract  with  the  Trust,   PSC  services
shareholder accounts, and its duties include: (i) processing sales,  redemptions
and exchanges of shares of the Trust;  (ii)  distributing  dividends and capital
gains associated with Trust portfolio  accounts;  and (iii) maintaining  account
records and responding to shareholder inquiries.

   
         PSC  receives  an annual fee of $30.00 per Class A, Class B and Class C
shareholder  account from the Trust as compensation  for the services  described
above.  This fee is set at an amount  determined  by vote of a  majority  of the
Trustees  (including  a  majority  of the  Trustees  who are not  parties to the
contract with PSC or interested persons of any such parties) to be comparable to
fees for such services being paid by other investment companies.
    

                                      -13-
<PAGE>

7.       CUSTODIAN

         Brown Brothers Harriman & Co. (the "Custodian") is the custodian of the
Trust's  assets.  The  Custodian's   responsibilities  include  safekeeping  and
controlling the Trust's cash and  securities,  handling the receipt and delivery
of securities and collecting interest and dividends on the Trust's  investments.
The Custodian does not determine the investment  policies of the Trust or decide
which securities the Trust will buy or sell. The Trust may,  however,  invest in
securities,  including  repurchase  agreements,  issued by the Custodian and may
deal with the  Custodian  as  principal in  securities  transactions.  Portfolio
securities may be deposited into the Federal  Reserve-Treasury  Department  Book
Entry System or the Depository Trust Company.

8.       INDEPENDENT PUBLIC ACCOUNTANTS

         Arthur  Andersen LLP are the Trust's  independent  public  accountants,
providing audit  services,  tax return review,  and assistance and  consultation
with respect to the preparation of filings with the SEC.

9.       PORTFOLIO TRANSACTIONS

         The Trust  intends to fully manage its  portfolio by buying and selling
securities,  as  well  as  holding  securities  to  maturity.  In  managing  its
portfolio,  the Trust seeks to take advantage of market  developments  and yield
disparities, which may include use of the following strategies:

                  (1)  shortening  the  average  maturity  of its  portfolio  in
         anticipation of a rise in interest rates so as to minimize depreciation
         of principal;

                  (2)  lengthening  the  average  maturity of its  portfolio  in
         anticipation of a decline in interest rates so as to maximize yield;

                  (3) selling one type of debt security and buying  another when
         disparities arise in the relative values of each; and

                  (4) changing from one debt security to an essentially  similar
         debt security  when their  respective  yields  appear  distorted due to
         market factors.

         The Trust engages in portfolio trading if it believes a transaction net
of costs  (including  taxes and  custodian  charges)  will help in achieving the
Trust's investment objective.

         Decisions  relating  to the  purchase  and sale of  securities  for the
Trust,  the  allocation of portfolio  transactions  and, where  applicable,  the
negotiation of commission rates are made by officers of PMC.

         The primary consideration in placing portfolio security transactions is
execution  at the most  favorable  prices.  PMC has  complete  freedom as to the
markets  in  and  broker-dealers  through  which  it  seeks  this  result.  Debt
securities are traded principally in the over-the-counter  market on a net basis
through  dealers  acting for their own account  and not as brokers.  The cost of
securities purchased from underwriters  includes an underwriter's  commission or
concession,  and the prices at which  securities are purchased and sold from and
to dealers include a dealer's markup or markdown. PMC attempts to negotiate with
underwriters  to decrease the  commission 


                                      -14-
<PAGE>

or concession for the benefit of the Trust.  PMC normally seeks to deal directly
with the  primary  market  makers  unless,  in its  opinion,  better  prices are
available elsewhere.

         Subject to the  requirement of seeking  execution at the best available
price,  securities may, as authorized by PMC's  management  contract,  be bought
from or sold to dealers who furnish  statistical  research and other information
or services to PMC and the Trust, or who sell shares of the Trust. Brokerage and
research  services may include advice  concerning  the value of securities;  the
advisability of investing in, purchasing or selling securities; the availability
of  securities  or the  purchasers  or sellers  of  securities;  and  furnishing
analyses, manuals and reports concerning issuers,  securities,  economic factors
and trends,  portfolio  strategy,  performance  of  accounts,  comparative  fund
statistics  and credit rating  service  information.  PMC maintains a listing of
dealers who provide such services on a regular basis.  Management  believes that
no exact dollar value can be calculated for such services.

         The   Trustees   periodically   review   PMC's   performance   of   its
responsibilities  in connection with the placement of portfolio  transactions on
behalf of the Trust.

10.      TAX STATUS

         It is the Trust's  policy to meet the  requirements  of Subchapter M of
the Internal Revenue Code of 1986, as amended (the "Code"), for qualification as
a regulated investment company.  These requirements relate to the sources of its
income,  diversification  of  its  assets  and  distribution  of its  income  to
shareholders.  If the Trust meets all such  requirements  and distributes to its
shareholders  at least  annually all investment  company  taxable income and net
capital  gain,  if any,  which it  receives,  the Trust will be  relieved of the
necessity of paying federal income tax.

         Because the Trust's income is not expected to arise from dividends,  no
part of its  distributions  to its corporate  shareholders  will qualify for the
dividends-received deduction for corporations.

         Any dividend declared by the Trust in October,  November or December as
of a record date in such a month and paid during the  following  January will be
treated for federal income tax purposes as received by  shareholders on December
31 of the calendar year in which it is declared.

         Since, at the time of an investor's purchase of Trust shares, a portion
of the per share net asset value by which the purchase  price is determined  may
be represented by realized or unrealized  appreciation in the Trust's  portfolio
or  undistributed  taxable  income of the Trust,  subsequent  distributions  (or
portions thereof) on such shares may be taxable to such investor even if the net
asset value of his shares is, as a result of the  distributions,  reduced  below
his cost for such shares and the  distributions (or portions thereof) in reality
represent a return of a portion of his investment.

         Any loss realized by a shareholder upon the redemption of shares with a
tax  holding  period  at the time of  redemption  of six  months or less will be
treated as a  long-term  capital  loss to the extent of any  amounts  treated as
distributions of long-term capital gain with respect to such shares.

         In addition, if Class A shares redeemed or exchanged have been held for
less  than  91  days,  (1)  in  the  case  of a  reinvestment  pursuant  to  the
reinvestment privilege,  the sales charge paid on such shares is not included in
their tax basis  under the Code,  and (2) in the case of an  exchange, 


                                      -15-
<PAGE>

   
all or a portion of the sales  charge  paid on such  shares in not  included  in
their  tax basis  under  the  Code,  to the  extent a sales  charge  that  would
otherwise  apply to the shares  received  is reduced  pursuant  to the  exchange
privilege.  In either case,  the portion of the sales charge not included in the
tax basis of the share redeemed or surrendered in an exchange is included in the
tax basis of the shares  acquired in the  reinvestment  or  exchange.  Losses on
certain  redemptions  may be disallowed  under "wash sale" rules in the event of
other  investments  in the Trust within 30 days before or after a redemption  or
other sale of shares.
    

         For  federal  income  tax  purposes,  the Trust is  permitted  to carry
forward  a net  realized  capital  loss in any year to offset  realized  capital
gains,  if any,  during the eight years  following  the year of the loss. To the
extent  subsequent  net realized  capital gains are offset by such losses,  they
would not  result  in  federal  income  tax  liability  to the Trust and are not
expected to be distributed as such to shareholders.

         Different  tax  treatment,   including   penalties  on  certain  excess
contributions  and  deferrals,   certain   pre-retirement  and   post-retirement
distributions,  and  certain  prohibited  transactions,  is accorded to accounts
maintained as qualified retirement plans.
Shareholders should consult their tax advisers for more information.

         The Trust is not subject to Massachusetts corporate excise or franchise
taxes and,  provided that it qualifies as a regulated  investment  company under
the Code, will not be required to pay any Massachusetts income tax.

   
         Federal law requires that the Trust withhold (as "backup  withholding")
31% of reportable  payments,  including dividends,  capital gain dividends,  and
proceeds of redemptions  (including  exchanges) and  repurchases to shareholders
who have not complied with Internal  Revenue  Service  ("IRS")  regulations.  In
order to avoid this withholding requirement,  shareholders must certify on their
Applications,  or on separate  W-9 Forms,  that their  Social  Security or other
Taxpayer  Identification  Number  is  correct  and that  they are not  currently
subject to backup withholding,  or that they are exempt from backup withholding.
The Trust may  nevertheless  be required to withhold if it receives  notice from
the IRS or a broker that the number provided is incorrect or backup  withholding
is  applicable  as a result of previous  underreporting  of interest or dividend
income.
    

         It is  possible  that some  states  will  exempt  from  income tax that
portion of a dividend  of the Trust that  represents  interest  received  by the
Trust from U.S. Government securities. Therefore, the Trust will report annually
to its  shareholders  the  percentage  of  interest  income  received  from U.S.
Government  securities  during the preceding year  indicating the source of such
income. Each shareholder is advised to consult his own tax adviser regarding the
exemption, if any, of such interest income under applicable law.

         The  description   above  relates  only  to  U.S.  federal  income  tax
consequences  for  shareholders  who are U.S.  persons,  i.e., U.S.  citizens or
residents,  or U.S. corporations,  partnerships,  trusts or estates, and who are
subject to U.S. federal income tax. The description does not address the special
tax rules applicable to certain classes of investors,  such as banks,  insurance
companies  or  tax-exempt  entities.  Investors  other than U.S.  persons may be
subject  to  different  U.S.  tax  treatment,  including  a  possible  30%  U.S.
withholding tax (or withholding tax at a lower treaty rate) on dividends treated
as ordinary income.  Shareholders should consult their own tax advisers on these
matters and on state, local and other applicable tax laws.

                                      -16-
<PAGE>

11.      DESCRIPTION OF SHARES

   
         The  Trust's  Declaration  of Trust  permits  the Board of  Trustees to
authorize the issuance of an unlimited  number of full and fractional  shares of
beneficial  interest (without par value) which may be divided into such separate
series as the Trustees may establish.  Currently, the Trust consists of only one
series. The Trustees may, however,  establish additional series of shares in the
future,  and may divide or combine the shares into a greater or lesser number of
shares without thereby changing the  proportionate  beneficial  interests in the
Trust.  The Declaration of Trust further  authorizes the Trustees to classify or
reclassify any series of the shares into one or more classes.  Pursuant thereto,
the Trustees  have  authorized  the  issuance of three  classes of shares of the
Trust, Class A shares,  Class B shares and Class C shares. Each share of a class
of the Trust  represents  an equal  proportionate  interest in the assets of the
Trust allocable to that class.  Upon  liquidation of the Trust,  shareholders of
each class of the Trust are entitled to share pro rata in the Trust's net assets
allocable to such class available for  distribution to  shareholders.  The Trust
reserves the right to create and issue  additional  series or classes of shares,
in which case the shares of each class of a series would participate  equally in
the  earnings,  dividends and assets  allocable to that class of the  particular
series.  Prior to July 1,  1994,  the Trust was named  Pioneer  U.S.  Government
Trust.
    

         Shareholders  are entitled to one vote for each share held and may vote
in the  election  of  Trustees  and on other  matters  submitted  to meetings of
shareholders.  Although  Trustees are not elected annually by the  shareholders,
shareholders have, under certain circumstances,  the right to remove one or more
Trustees.  No amendment  adversely  affecting the rights of shareholders  may be
made to the  Trust's  Declaration  of Trust  without the  affirmative  vote of a
majority of its shares.  Shares have no preemptive or conversion rights.  Shares
are fully paid and  non-assessable  by the Trust,  except as stated  below.  See
"Certain Liabilities."

12.      CERTAIN LIABILITIES

         As a Massachusetts  business trust, the Trust's operations are governed
by its Amended and Restated  Declaration of Trust dated December 7, 1993, a copy
of which is on file with the  office of the  Secretary  of The  Commonwealth  of
Massachusetts.  Theoretically,  shareholders of a  Massachusetts  business trust
may, under certain circumstances,  be held personally liable for the obligations
of the trust.  However,  the Declaration of Trust contains an express disclaimer
of  shareholder  liability for acts or obligations of the Trust or any series of
the Trust and  provides  that  notice  of such  disclaimer  may be given in each
agreement, obligation or instrument entered into or executed by the Trust or its
Trustees.  Moreover,  the Declaration of Trust provides for the  indemnification
out of  Trust  property  of any  shareholders  held  personally  liable  for any
obligations  of the Trust or any series of the Trust.  The  Declaration of Trust
also  provides  that the Trust shall,  upon  request,  assume the defense of any
claim made against any  shareholder  for any act or  obligation of the Trust and
satisfy  any  judgment  thereon.  Thus,  the  risk  of a  shareholder  incurring
financial  loss beyond his or her investment  because of  shareholder  liability
would be limited to  circumstances  in which the Trust  itself will be unable to
meet its  obligations.  In light of the nature of the Trust's  business  and the
nature and amount of its assets,  the  possibility  of the  Trust's  liabilities
exceeding its assets, and therefore a shareholder's risk of personal  liability,
is remote.

         The  Declaration  of  Trust  further  provides  that  the  Trust  shall
indemnify  each of its Trustees and officers  against  liabilities  and expenses
reasonably  incurred by them, in connection with, or arising out of, any action,
suit or proceeding,  threatened  against or otherwise  involving 


                                      -17-
<PAGE>

such Trustee or officer,  directly or  indirectly,  by reason of being or having
been a Trustee  or  officer  of the  Trust.  The  Declaration  of Trust does not
authorize the Trust to indemnify any Trustee or officer against any liability to
which  he or she  would  otherwise  be  subject  by  reason  of or  for  willful
misfeasance,  bad faith, gross negligence or reckless disregard of such person's
duties.

13.      LETTER OF INTENTION

         Purchases  of  $100,000  or  more  of  Class A  shares  (excluding  any
reinvestments  of  dividends  and  capital  gains  distributions)  made within a
13-month period  pursuant to a Letter of Intention  provided by PFD will qualify
for a reduced  sales  charge.  Such reduced sales charge will be the charge that
would be applicable to the purchase of all Class A shares  purchased during such
13-month period pursuant to a Letter of Intention had such shares been purchased
all at once.  See "How to Buy Trust Shares" in the  Prospectus.  For example,  a
person who signs a Letter of Intention providing for a total investment in Trust
Class A shares of $100,000  over a 13-month  period would be charged at the 3.5%
sales charge rate with respect to all purchases  during that period.  Should the
amount actually  purchased  during the 13-month period be more or less than that
indicated  in the Letter,  an  adjustment  in the sales  charge will be made.  A
purchase not made pursuant to a Letter of Intention  may be included  thereafter
if the Letter is filed within 90 days of such purchase. Any shareholder may also
obtain the reduced  sales  charge by  including  the value (at current  offering
price) of all his  shares in the Trust and other  Pioneer  mutual  funds  except
directly  purchased Class A shares of Pioneer Money Market Trust, held of record
as of the date of this Letter of Intention as a credit  toward  determining  the
applicable  scale of sales charge for the Class A shares to be  purchased  under
the Letter of Intention.

         The  Letter  of  Intention  authorizes  PSC to escrow  shares  having a
purchase price equal to 5% of the stated  investment in the Letter of Intention.
A Letter of Intention is not a binding obligation upon the investor to purchase,
or the Trust to sell, the full amount indicated and the investor should read the
provisions thereof carefully before signing.

14.      SYSTEMATIC WITHDRAWAL PLAN

   
         The  Systematic  Withdrawal  Plan  ("SWP")  is  designed  to  provide a
convenient  method of receiving fixed payments at regular  intervals from shares
of the Trust deposited by the applicant under this SWP.  Withdrawals pursuant to
the SWP are  limited to 10% of the value of the  account at the time the plan is
implemented if a CDSC applies (see the Prospectus).  (You may, of course, redeem
your shares without limit outside the SWP.) In order to be eligible for the SWP,
your account must have a total value of not less than $10,000. Periodic payments
of $50 or more will be  deposited  monthly  or  quarterly  directly  into a bank
account  designated  by you,  or will be sent by  check  to you,  or any  person
designated by you. A designation of a third party to receive checks  requires an
acceptable signature guarantee.
    

         Any income dividends or capital gains distributions on shares under the
SWP  will be  credited  to the  SWP  account  on the  payment  date in full  and
fractional shares at the net asset value per share in effect on the record date.

         Payments  under the SWP are made from the proceeds of the redemption of
shares deposited under the SWP in your SWP account. Such redemptions are taxable
transactions.  To the extent  that such  redemptions  for  periodic  withdrawals
exceed  dividend income  reinvested in the SWP account,  such  redemptions  will


                                      -18-
<PAGE>

reduce and may  ultimately  exhaust  the number of shares  deposited  in the SWP
account. In addition, the amounts received by a shareholder cannot be considered
as an  actual  yield or  income on his or her  investment  because  part of such
payments may be a return of his or her capital.

         The SWP may be terminated  at any time (1) by written  notice to PSC or
from PSC to the shareholder;  (2) upon receipt by PSC of appropriate evidence of
the  shareholder's  death;  or (3)  when all  shares  under  the SWP  have  been
redeemed.

15.      DETERMINATION OF NET ASSET VALUE

         The net asset value per share of each Class of the Trust is  determined
as of the  close  of  regular  trading  on the  New  York  Stock  Exchange  (the
"Exchange") (normally 4:00 p.m., Eastern Time) on each day on which the Exchange
is  open  for  business.  As  of  the  date  of  this  Statement  of  Additional
Information,  the  Exchange is open for  trading  every  weekday  except for the
following holidays: New Year's Day, Presidents' Day, Good Friday,  Memorial Day,
Independence  Day, Labor Day,  Thanksgiving Day and Christmas Day. The net asset
value per share of each Class of the Trust is also  determined  on any other day
in which the level of trading in its portfolio  securities is sufficiently  high
that the  current  net asset  value per share  might be  materially  affected by
changes in the value of its portfolio  securities.  The Trust is not required to
determine  its net asset value per share on any day in which no purchase  orders
for the shares of the Trust  become  effective  and no shares are  tendered  for
redemption.

   
         The net asset value per share of each class of the Trust is computed by
taking the amount of the value of all the Trust's  assets  attributable  to that
class, less the Trust's liabilities  attributable to that class, and dividing it
by the number of outstanding  shares of that class.  For purposes of determining
net asset  value,  expenses of the  classes of the Trust are  accrued  daily and
taken into account.
    

16.      INVESTMENT RESULTS

   
         The Trust's yield quotations and average annual total return quotations
for each class of its shares as that  information  may appear in the Prospectus,
this Statement of Additional  Information  or in  advertising  are calculated by
standard methods prescribed by the SEC.
    

Standardized Yield Quotations

   
         Yield  quotations  for Class A, Class B and Class C shares are computed
by dividing the net investment income per share attributable to a class during a
base period of 30 days, or one month, by the maximum offering price per share of
that class of the Trust on the last day of such base period in  accordance  with
the following formula:
    

                                      -19-
<PAGE>

                                              a-b
                  YIELD      =       2[    (------- +1)6-1]
                                              cd

Where:            a     =   interest earned during the period

                  b     =   net expenses accrued for the period

                  c     =   the  average  daily  number  of  shares  outstanding
                            during  the  period  that were  entitled  to receive
                            dividends

                  d     =   the maximum offering price per share on the last day
                            of the period

For purposes of calculating  interest earned on debt  obligations as provided in
item "a" above:

         (i) The  yield to  maturity  of each  obligation  held by the  Trust is
computed based on the market value of the obligation  (including  actual accrued
interest,  if any) at the close of  business  each day during  the  30-day  base
period, or, with respect to obligations purchased during the month, the purchase
price (plus  actual  accrued  interest,  if any) on  settlement  date,  and with
respect to obligations sold during the month the sale price (plus actual accrued
interest, if any) between the trade and settlement dates.

         (ii) The yield to maturity of each  obligation  is then  divided by 360
and the resulting  quotient is multiplied by the market value of the  obligation
(including actual accrued interest,  if any) to determine the interest income on
the obligation for each day. The yield to maturity  calculation has been made on
each obligation during the 30 day base period.

         (iii) Interest earned on all debt obligations  during the 30-day or one
month period is then totaled.

         (iv) The maturity of an obligation with a call provision(s) is the next
call date on which the obligation reasonably may be expected to be called or, if
none, the maturity date.

         With  respect to the  treatment  of discount and premium on mortgage or
other receivables-backed obligations which are expected to be subject to monthly
payments of principal and interest ("pay downs"), the Trust accounts for gain or
loss  attributable  to actual  monthly  pay downs as an  increase or decrease to
interest  income  during the  period.  In  addition,  the Trust may elect (i) to
amortize the discount or premium  remaining on a security,  based on the cost of
the security,  to the weighted  average  maturity  date, if such  information is
available,  or to the remaining  term of the security,  if the weighted  average
maturity date is not available,  or (ii) not to amortize the discount or premium
remaining on a security.

   
         The Trust's yield for the 30 days ended  December 31, 1994,  determined
in accordance  with the formula above was 6.75% for Class A shares and 6.34% for
Class B shares, except that absent expense limitations,  the Trust's yield would
have been 6.69% for Class A shares and 6.28% for Class B shares.  Class C shares
will first be offered January 31, 1996.
    

                                      -20-
<PAGE>

Standardized Average Annual Total Return Quotations

         One of the primary  methods used to measure the  performance of a class
of the Trust is "total  return."  "Total  return" will  normally  represent  the
percentage change in value of an account,  or of a hypothetical  investment in a
class of the  Trust,  over any  period up to the  lifetime  of that class of the
Trust.  Total return  calculations  will usually assume the  reinvestment of all
dividends and capital gains  distributions and will be expressed as a percentage
increase or decrease from an initial value,  for the entire period or for one or
more specified  periods within the entire period.  Total return  percentages for
periods  of less  than  one  year  will  usually  be  annualized;  total  return
percentages  for periods  longer than one year will  usually be  accompanied  by
total return  percentages  for each year within the period and/or by the average
annual compounded total return for the period. The income and capital components
of a given return may be separated  and  portrayed in a variety of ways in order
to illustrate their relative significance.  Performance may also be portrayed in
terms of cash or investment values, without percentages. Past performance cannot
guarantee any particular future result.

   
         Average  annual total return  quotations for each Class of Trust shares
are computed by finding the average annual compounded rates of return that would
cause a  hypothetical  investment  in that  class  made  on the  first  day of a
designated  period (assuming all dividends and  distributions are reinvested) to
equal the ending  redeemable value of such  hypothetical  investment on the last
day of the designated period in accordance with the following formula:
    

                            P(1+T)n  =  ERV

   
Where:            P        =     a hypothetical  initial payment of $1000,  less
                                 the  maximum  sales  load for Class A shares or
                                 the deduction of any CDSC applicable to Class B
                                 or Class C shares at the end of the period.
    

                  T        =     average annual total return

                  n        =     number of years

                  ERV      =     ending  redeemable  value  of the  hypothetical
                                 $1000 initial  payment made at the beginning of
                                 the designated  period (or  fractional  portion
                                 thereof)

For  purposes of the above  computation,  it is assumed that all  dividends  and
distributions  made by the Trust are  reinvested  at net asset value  during the
designated  period.  The average annual total return  quotation is determined to
the nearest 1/100 of 1%.

         In determining the average annual total return  (calculated as provided
above),  recurring fees, if any, that are charged to all shareholder accounts of
a particular class are taken into consideration.  For any account fees that vary
with the size of the  account,  the account  fee used for  purposes of the above
computation  is assumed  to be the fee that would be charged to the class'  mean
account size.

         The average annual total return of the Trust for Class A shares for the
one- and  five-year  periods  ended  December  31,  1994 and for the period from
inception (May 31, 1988) through December 31, 1994 were -8.26%, 5.46% and 6.45%,
respectively.  The total  return of the Trust for Class B shares  for the period
from April 29,  1994  through  December  31,  1994 was  -4.39%.  


                                      -21-
<PAGE>

   
Absent  expense  limitations  in effect  during these two  periods,  the average
annual total  return of the Trust would have been lower than the returns  quoted
above. Class C shares will first be offered January 31, 1996.
    

Other Quotations, Comparisons, and General Information

         From  time to  time,  in  advertisements,  in sales  literature,  or in
reports to  shareholders,  the past  performance of the Trust may be illustrated
and/or  compared  with  that of  other  mutual  funds  with  similar  investment
objectives,  and to other relevant  indices.  For example,  yield of the Trust's
classes may be compared to the Shearson  Lehman  Hutton  Government  Index,  U.S
Government bond rates, or other comparable indices or investment vehicles.

         In  addition,  the  performance  of the  classes  of the  Trust  may be
compared to  alternative  investment  or savings  vehicles  and/or to indexes or
indicators of economic activity,  e.g., inflation or interest rates. Performance
rankings and listings  reported in newspapers or national business and financial
publications,  such as Barron's,  Business  Week,  Consumer's  Digest,  Consumer
Reports, Financial World, Forbes, Fortune, Investors Business Daily, Kiplinger's
Personal Finance Magazine,  Money Magazine, the New York Times, Smart Money, USA
Today, U.S. News and World Report, The Wall Street Journal and Worth may also be
cited (if the Trust is listed in any such  publication)  or used for comparison,
as  well as  performance  listings  and  rankings  from  various  other  sources
including Bloomberg  Financial Systems,  CDA/Wiesenberger  Investment  Companies
Service,   Donoghue's  Mutual  Fund  Almanac,  Investment  Company  Data,  Inc.,
Johnson's Charts, Kanon Bloch Carre & Co., Micropal,  Inc.,  Morningstar,  Inc.,
Schabacker Investment Management and Towers Data Systems.

         In addition, from time to time, quotations from articles from financial
publications,  such as those listed  above,  may be used in  advertisements,  in
sales literature or in reports to shareholders of the Trust.

         The Trust may also present, from time to time,  historical  information
depicting  the value of a  hypothetical  account  in one or more  classes of the
Trust since the Trust's inception.

         In presenting investment results, the Trust may also include references
to certain  financial  planning  concepts,  including (a) an investor's  need to
evaluate his financial  assets and  obligations to determine how much to invest;
(b) his need to analyze the objectives of various investments to determine where
to invest;  and (c) his need to analyze his time frame for future  capital needs
to determine how long to invest. The investor controls these three factors,  all
of which affect the use of investments in building assets.

Automated Information Line

   
         FactFoneSM,   Pioneer's  24-hour  automated  information  line,  allows
shareholders   to  dial   toll-free   1-800-225-4321   and  hear  recorded  fund
information, including:
    

         (degree)        net asset value prices for all Pioneer mutual funds;

         (degree)        annualized 30-day yields on Pioneer's bond funds;

         (degree)        annualized 7-day yields and 7-day effective  (compound)
                         yields for Pioneer's money market funds; and

         (degree)        dividends  and  capital  gains   distributions  on  all
                         Pioneer mutual funds.

                                      -22-
<PAGE>

         Yields are  calculated  in  accordance  with  Securities  and  Exchange
Commission mandated standard formulas.

   
         In  addition,  by  using  a  personal  identification  number  ("PIN"),
shareholders  may enter  purchases,  exchanges  and  redemptions,  access  their
account balance and last three transactions and may order a duplicate statement.
See "FactFoneSM" in the Prospectus for more information.

         All performance numbers  communicated through FactFoneSM represent past
performance,  and  figures  for all quoted  bond funds  include  the  applicable
maximum sales charge.  A  shareholder's  actual yield and total return will vary
with  changing  market  conditions.  The  value of Class A,  Class B and Class C
shares  (except for Pioneer money market funds,  which seek a stable $1.00 share
price)  will also vary and may be worth  more or less at  redemption  than their
original cost.
    

17.      FINANCIAL STATEMENTS

   
         The Trust's  financial  statements for the year ended December 31, 1994
are  included in the Trust's  Annual  Report to  Shareholders,  which  report is
incorporated  by reference  into and is attached to this Statement of Additional
Information.  The Trust's Annual Report to Shareholders  is so incorporated  and
attached in reliance upon the report of Arthur Andersen LLP,  independent public
accountants, as experts in accounting and auditing.
    


                                      -23-
<PAGE>


                                   APPENDIX A

                            Other Pioneer Information


The Pioneer group of mutual funds was  established  in 1928 with the creation of
Pioneer Fund. Pioneer is one of the oldest,  most respected and successful money
managers in the United States.

As of December 31, 1994,  PMC employed a  professional  investment  staff of 46,
with a  combined  average  of 14 years'  experience  in the  financial  services
industry.

At December 31, 1994, there were 591,192 non-retirement shareholder accounts and
337,577 retirement shareholder accounts in Pioneer's funds. Total assets for all
Pioneer Funds were $10,038,000,000 representing 927,769 shareholder accounts.






                                      A-1

<PAGE>
<TABLE>
<CAPTION>

                                                         Pioneer America Income Trust


Date      Initial Investment     Offering Price     Sales Charge    Shares Purchased    Net Asset Value       Initial Net Asset
                                                     Included                             Per Share                Value
<S>            <C>                  <C>                <C>              <C>                <C>                    <C>   
6/1/88        $10,000              $10.47              4.50%            955.11            $10.00                 $9,551

</TABLE>

                                    Dividends and Capital Gains Reinvested
<TABLE>
<CAPTION>

                                               Value of Shares

Date               From           From Cap. Gains      From Dividends       Total Value
                Investment          Reinvested           Reinvested
<S>               <C>                  <C>                  <C>               <C>   
12/31/88           $9,418               $0                 $  492                $9,910
12/31/89           $9,589               $0                 $1,460               $11,049
12/31/90           $9,580               $0                 $2,463               $12,043
12/31/91           $9,885               $0                 $3,620               $13,505
12/31/92           $9,809               $0                 $4,597               $14,406
12/31/93          $10,010               $52                $5,652               $15,714
12/31/94           $8,987               $47                $6,055               $15,089
</TABLE>
















<PAGE>


                               INDEX DESCRIPTIONS

LONG-TERM MUNICIPAL BOND PORTFOLIO *
For the 1926 to 1984 period, returns are calculated form yields on 20-year prime
issues from Solomon  Brothers'  Analytical  Record of Yields and Yields Spreads,
assuming coupon equals previous year-end yield and a 20-year maturity.  For 1985
to the present,  returns are  calculated  using  Moody's Bond Record,  using the
December  average  municipal  yield as the  beginning-of-following  year  coupon
(average of Aaa, Aa, A, Baa grades).

LONG-TERM CORPORATE BONDS *
For 1969 through  1991,  corporate  bond total  returns are  represented  by the
Salomon Brothers  Long-Term  High-Grade  Corporate Bond Index.  Since most large
corporate bond transactions  take place over the counter,  a major dealer is the
natural source of these data.  The index  includes  nearly all Aaa- and Aa-rated
bonds.  If a bond is downgraded  during a particular  month,  its return for the
month is included in the index before removing the bond from future  portfolios.
For 1926 through  1968,  total  returns were  calculated  by summing the capital
appreciation  returns and the income returns.  For the period 1946 through 1968,
Ibbotson and Sinquefield  backdated the Salomon  Brothers' index,  using Salomon
Brothers' monthly yield data with a methodology  similar to that used by Salomon
for 1969-1991. Capital appreciation returns were calculated from yields assuming
(at the beginning of each monthly  holding  period) a 20-year  maturity,  a bond
price equal to par, and a coupon equal to the beginning-of-period yield. For the
period 1926-1945, the Standard and Poor's monthly High-Grade Corporate Composite
yield data were used,  assuming a 4 percent coupon and a 20-year  maturity.  The
conventional  present-value  formula  for  bond  price  for  the  beginning  and
end-of-month  prices was used.  (This formula is presented in Ross,  Stephen A.,
and Randolph W. Westerfield,  Corporate Finance, Times Mirror/ Mosby, St. Louis,
1990, p. 97 ["Level-Coupon Bonds"].) The monthly income return was assumed to be
one-twelfth the coupon.

LONG-TERM GOVERNMENT BOND TOTAL RETURN *
The  total  returns  on  long-term  government  bonds  from  1977  to  1991  are
constructed  with data from The Wall Street Journal.  Over  1926-1976,  data are
obtained  from the  Government  Bond File at the Center for Research in Security
Prices (CRSP), Graduate School of Business,  University of Chicago. Each year, a
one-bond  portfolio  with a term of  approximately  20  years  and a  reasonably
current  coupon  was used,  and whose  returns  did not  reflect  potential  tax
benefits,  impaired  negotiability,  or special  redemption or call  privileges.
Where  callable  bonds had to be used,  the term of the bond was assumed to be a
simple  average of the maturity and first call dates minus the current date. The
bond was "held" for the calendar year and returns were  computed.  Total returns
for  1977-1991 are  calculated  as the change in the flat price or  and-interest
price.

INTERMEDIATE-TERM GOVERNMENT BONDS TOTAL RETURN *
Total  returns  of the  intermediate-term  government  bonds for  1977-1991  are
calculated from The Wall Street Journal prices,  using the change in flat price.
Returns for 1934 through 1986 are obtained from the CRSP  Government  Bond File.
<PAGE>

                               INDEX DESCRIPTIONS


Each year,  one-bond  portfolios  are formed,  the bond  chosen is the  shortest
noncallable  bond with a maturity not less than 5 years, and this bond is "held"
for the  calendar  year.  Monthly  returns are  computed.  (Bonds with  impaired
negotiability or special redemption  privileges are omitted, as are partially or
fully  tax-exempt  bonds  starting  with 1943.) For the period from 1934 through
1942,  almost all bonds with  maturities  near 5 years  were  partially  or full
tax-exempt and were selected using the rules described above. Personal tax rates
were  generally  low in that  period,  so that yields on  tax-exempt  bonds were
similar to yields on taxable bonds.  Between 1926 and 1933,  there are few bonds
suitable for construction of a series with a 5-year  maturity.  For this period,
five year bond yield estimates are used.

U.S. (30 DAY) TREASURY BILL TOTAL RETURNS *
For the U.S. Treasury bill index, data from The Wall Street Journal are used for
1977-1991;  the CRSP U.S.  Government  Bond File is the  source of data  through
1976. Each month a one-bill  portfolio  containing the shortest-term bill having
not less than one month to maturity is constructed. (The bill's original term to
maturity is not  relevant.) To measure  holding  period returns for the one-bill
portfolio,  the  bill is  priced  as of the  last  trading  day of the  previous
month-end and as of the last trading day of the current month.

BANK SAVINGS ACCOUNT **
Data sources include the U.S. League of Savings Institutions Sourcebook; average
annual yield on savings  deposits in FSLIC [FDIC] insured  savings  institutions
for the years 1963-1987 and The Wall Street Journal for the years 1988-1994.

6 MONTH CD **
Data sources include the Federal Reserve Bulletin and The Wall Street Journal.









Sources:    *  Ibbotson Associates
           **  Towers Data Systems



<PAGE>

<TABLE>
<CAPTION>

                       COMPARATIVE PERFORMANCE STATISTICS

             Municipal  U.S. Long Term  U.S. Long Term   U.S. Interm.    U.S.(30Day)     Bank Savings
             Long term   Corporate Bds    Govt Bonds      Govt Bonds    Treasury Bill       Account            6 Month CD
               %TR *    %Total Return * %Total Return * %Total Return * %Total Return *  %Total Return **   %Total Return **
                                                                                                 
<S>            <C>           <C>             <C>             <C>             <C>             <C>                  <C>      
Dec 1928       0.55          2.84            0.10            0.92            3.56            N/A                  N/A
Dec 1929       3.22          3.27            3.42            6.01            4.75            N/A                  N/A
Dec 1930       6.52          7.98            4.66            6.72            2.41            5.30                 N/A
Dec 1931      -3.53         -1.85           -5.31           -2.32            1.07            5.10                 N/A
Dec 1932       8.19         10.82           16.84            8.81            0.96            4.10                 N/A
Dec 1933      -2.17         10.38           -0.07            1.83            0.30            3.40                 N/A
Dec 1934      21.66         13.84           10.03            9.00            0.16            3.50                 N/A
Dec 1935       9.18          9.61            4.98            7.01            0.17            3.10                 N/A
Dec 1936     -15.13          6.74            7.52            3.06            0.18            3.20                 N/A
Dec 1937      28.38          2.75            0.23            1.56            0.31            3.50                 N/A
Dec 1938       9.24          6.13            5.53            6.23           -0.02            3.50                 N/A
Dec 1939       5.70          3.97            5.94            4.52            0.02            3.40                 N/A
Dec 1940      10.52          3.39            6.09            2.96            0.00            3.30                 N/A
Dec 1941      -0.80          2.73            0.93            0.50            0.06            3.10                 N/A
Dec 1942       2.09          2.60            3.22            1.94            0.27            3.00                 N/A
Dec 1943       6.51          2.83            2.08            2.81            0.35            2.90                 N/A
Dec 1944       4.15          4.73            2.81            1.80            0.33            2.80                 N/A
Dec 1945       5.76          4.08           10.73            2.22            0.33            2.50                 N/A
Dec 1946      -3.77          1.72           -0.10            1.00            0.35            2.20                 N/A
Dec 1947      -4.04         -2.34           -2.62            0.91            0.50            2.30                 N/A
Dec 1948       3.79          4.14            3.40            1.85            0.81            2.30                 N/A
Dec 1949      14.39          3.31            6.45            2.32            1.10            2.40                 N/A
Dec 1950       4.15          2.12            0.06            0.70            1.20            2.50                 N/A
Dec 1951      -3.65         -2.69           -3.93            0.36            1.49            2.60                 N/A
Dec 1952      -3.21          3.52            1.16            1.63            1.66            2.70                 N/A
Dec 1953       0.38          3.41            3.64            3.23            1.82            2.80                 N/A
Dec 1954       3.74          5.39            7.19            2.68            0.86            2.90                 N/A
Dec 1955      -1.21          0.48           -1.29           -0.65            1.57            2.90                 N/A
Dec 1956      -7.61         -6.81           -5.59           -0.42            2.46            3.00                 N/A
Dec 1957       5.92          8.71            7.46            7.84            3.14            3.30                 N/A
Dec 1958      -2.56         -2.22           -6.09           -1.29            1.54            3.38                 N/A
Dec 1959      -3.43         -0.97           -2.26           -0.39            2.95            3.53                 N/A
Dec 1960       8.61          9.07           13.78           11.76            2.66            3.86                 N/A
Dec 1961       2.37          4.82            0.97            1.85            2.13            3.90                 N/A
Dec 1962       7.68          7.95            6.89            5.56            2.73            4.08                 N/A
Dec 1963      -0.84          2.19            1.21            1.64            3.12            4.17                 N/A
Dec 1964       4.59          4.77            3.51            4.04            3.54            4.19                 4.18
Dec 1965      -2.74         -0.46            0.71            1.02            3.93            4.23                 4.68
Dec 1966       0.58          0.20            3.65            4.69            4.76            4.45                 5.75
Dec 1967      -4.41         -4.95           -9.18            1.01            4.21            4.67                 5.48
<PAGE>

                       COMPARATIVE PERFORMANCE STATISTICS

             Municipal  U.S. Long Term  U.S. Long Term   U.S. Interm.    U.S.(30Day)     Bank Savings
             Long term   Corporate Bds    Govt Bonds      Govt Bonds    Treasury Bill       Account            6 Month CD
               %TR *    %Total Return * %Total Return * %Total Return * %Total Return *  %Total Return **   %Total Return **
                                                                                                 
<S>            <C>           <C>             <C>             <C>             <C>             <C>                  <C>      
Dec 1968      -0.96          2.57           -0.26            4.54            5.21            4.68            6.44
Dec 1969     -15.39         -8.09           -5.07           -0.74            6.58            4.80            8.71
Dec 1970      21.10         18.37           12.11           16.86            6.52            5.14            7.06
Dec 1971      12.26         11.01           13.23            8.72            4.39            5.30            5.36
Dec 1972       1.51          7.26            5.69            5.16            3.84            5.37            5.38
Dec 1973       4.27          1.14           -1.11            4.61            6.93            5.51            8.60
Dec 1974     -10.66         -3.06            4.35            5.69            8.00            5.96           10.20
Dec 1975      11.55         14.64            9.20            7.83            5.80            6.21            6.51
Dec 1976      15.79         18.65           16.75           12.87            5.08            6.23            5.22
Dec 1977       3.87          1.71           -0.69            1.41            5.12            6.39            6.12
Dec 1978      -3.98         -0.07           -1.18            3.49            7.18            6.56           10.21
Dec 1979       1.02         -4.18           -1.23            4.09           10.38            7.29           11.90
Dec 1980     -17.57         -2.76           -3.95            3.91           11.24            8.78           12.33
Dec 1981     -15.52         -1.24            1.86            9.45           14.71           10.71           15.50
Dec 1982      47.94         42.56           40.36           29.10           10.54           11.19           12.18
Dec 1983       3.34          6.26            0.65            7.41            8.80            9.71           9.65
Dec 1984       8.41         16.86           15.48           14.02            9.85            9.92           10.65
Dec 1985      24.03         30.09           30.97           20.33            7.72            9.02            7.82
Dec 1986      27.31         19.85           24.53           15.14            6.16            7.84            6.30
Dec 1987      -5.06         -0.27           -2.71            2.90            5.47            6.92            6.58
Dec 1988      11.47         10.70            9.67            6.10            6.35            7.20            8.15
Dec 1989      14.64         16.23           18.11           13.29            8.37            7.91            8.27
Dec 1990      6.54           6.78            6.18            9.73            7.81            7.8             7.85
Dec 1991      11.18         19.89           19.30           15.46            5.60            4.61            4.95
Dec 1992      10.80          9.39            8.05            7.19            3.51            2.89            3.27
Dec 1993      14.16         13.19           18.24           11.24            2.90            2.73            2.88
Dec 1994      -8.63         -5.76           -7.77           -5.14            3.90            4.96            5.4
</TABLE>



                        * Source:   Ibbotson Associates
                       ** Source:   Towers Data Systems


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