PIONEER AMERICA INCOME TRUST
485BPOS, 1996-04-22
Previous: EMERALD FUNDS, DEF 14A, 1996-04-22
Next: FREEPORT MCMORAN COPPER & GOLD INC, S-3, 1996-04-22



                                                               File No. 33-20795
                                                               File No. 811-5516

     As filed with the Securities and Exchange Commission on April 22, 1996.

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    FORM N-1A
                                     ------

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933     / X /
                                                            
                                                           
           Pre-Effective Amendment No. ___                  /   /
                                                            
           Post-Effective Amendment No. 10                  / X /
                                                               
                                     and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
                                                               
                                                           / X /
                                                           
                      Amendment No. 11                     / X /
                                                           
                        (Check appropriate box or boxes)

                          PIONEER AMERICA INCOME TRUST
                    (formerly Pioneer U.S. Government Trust)
               (Exact name of registrant as specified in charter)

                  60 State Street, Boston, Massachusetts 02109
                (Address of principal executive office) Zip Code

                                 (617) 742-7825
              (Registrant's Telephone Number, including Area Code)

        Joseph P. Barri, Hale and Dorr, 60 State Street, Boston, MA 02109
                     (Name and address of agent for service)



It is proposed that this filing will become effective (check appropriate box):

          x           immediately upon filing pursuant to paragraph (b)
         ___          on May 1, 1996 pursuant to paragraph (b)
         ___          60 days after filing pursuant to paragraph (a)(1)
         ___          on January __, 1996 pursuant to paragraph (a)(1)
         ___          75 days after filing pursuant to paragraph (a)(2)
         ___          on [date] pursuant to paragraph (a)(2) of Rule 485

The Registrant has  registered an indefinite  number of shares  pursuant to Rule
24f-2 under the Investment  Company Act of 1940, as amended.  The Registrant has
filed its Rule 24f-2 Notice for its current fiscal year on or about February 28,
1996.


                         CALCULATION OF REGISTRATION FEE

Title of       Amount of       Proposed           Proposed
Securities     Shares          Maximum            Maximum         Amount of
Being          Being           Offering           Aggregate       Registration 
Registered     Registered      Price Per Unit     Offering Price  Fee          
- ----------     ----------      --------------     --------------  ---          
Shares of       822,556            $9.96          $8,192,657.70   $100.00*
Beneficial
Interest

*This  calculation  has been made  pursuant to Rule 24e-2  under the  Investment
Company  Act of 1940.  During  its fiscal  year ended  December  31,  1995,  the
Registrant  redeemed  or  repurchased  4,748,465  Class A and  Class B shares of
beneficial  interest,  of which 3,955,025 were utilized by the Registrant on its
Rule 24f-2  Notice  filed on February 28, 1996 and 793,440 are being used herein
for purposes of reducing the filing fee payable  herewith  under Rule 24e-2.  No
fee is required for the  registration  of such  793,440  shares.  An  additional
29,116 shares being registered  hereby are valued at the average public offering
price of $9.96 as of April 18, 1996.


<PAGE>

                          PIONEER AMERICA INCOME TRUST

       Cross-Reference Sheet Showing Location in Prospectus and Statement
       of Additional Information of Information Required by Items of the
                                Registration Form


                                                  Location in
                                                  Prospectus or
                                                  Statement of 
                                                  Additional
Form N-1A Item Number and Caption                 Information
- ---------------------------------                 -----------

1.  Cover Page....................................Prospectus - Cover Page

2.  Synopsis......................................Prospectus - Expense
                                                  Information

3.  Condensed Financial Information...............Prospectus - Financial
                                                  Highlights

4.  General Description of Registrant.............Prospectus - Investment
                                                  Objective and Policies;
                                                  Management of the Trust; Trust
                                                  Share Alternatives; Share
                                                  Price; How to Sell Trust
                                                  Shares; How to Exchange Trust
                                                  Shares; The Trust

5.  Management of the Fund........................Prospectus - Management of the
                                                  Trust

6.  Capital Stock and Other Securities............Prospectus - Investment
                                                  Objective and Policies; Trust
                                                  Share Alternatives; Share
                                                  Price; How to Sell Trust
                                                  Shares; How to Exchange Trust
                                                  Shares; The Trust
<PAGE>

7.  Purchase of Securities Being Offered..........Prospectus - Trust Share
                                                  Alternatives; Share Price; How
                                                  to Sell Trust Shares; How to
                                                  Exchange Trust Shares; The
                                                  Trust; Shareholder Services;
                                                  Distribution Plans

8.  Redemption or Repurchase......................Prospectus - Trust Share
                                                  Alternatives; Share Price; How
                                                  to Sell Trust Shares; How to
                                                  Exchange Trust Shares; The
                                                  Trust; Shareholder Services

9.  Pending Legal Proceedings.....................Not Applicable


10. Cover Page....................................Statement of Additional
                                                  Information - Cover Page

11. Table of Contents.............................Statement of Additional
                                                  Information - Cover Page

12. General Information and History...............Statement of Additional
                                                  Information - Cover Page;
                                                  Description of Shares

13. Investment Objectives and Policy..............Statement of Additional
                                                  Information - Investment
                                                  Policies and Restrictions

14. Management of the Fund........................Statement of Additional
                                                  Information - Management of
                                                  the Trust; Investment Adviser

                                      -2-
<PAGE>

15. Control Persons and Principle Holders
         of Securities............................Statement of Additional
                                                  Information - Management of
                                                  the Trust

16. Investment Advisory and Other
         Services.................................Statement of Additional
                                                  Information - Management of
                                                  the Trust; Investment Adviser;
                                                  Principal Underwriter;
                                                  Distribution Plans;
                                                  Shareholder Servicing/Transfer
                                                  Agent; Custodian; Independent
                                                  Public Accountant

17. Brokerage Allocation and Other
         Practices................................Statement of Additional
                                                  Information - Portfolio
                                                  Transactions

18. Capital Stock and Other Securities............Statement of Additional
                                                  Information - Description of
                                                  Shares; Certain Liabilities

19. Purchase Redemption and Pricing of
         Securities Being Offered.................Statement of Additional
                                                  Information - Letter of
                                                  Intention; Systematic
                                                  Withdrawal Plan; Determination
                                                  of Net Asset Value

20. Tax Status....................................Statement of Additional
                                                  Information - Tax Status

                                      -3-
<PAGE>

21. Underwriters..................................Statement of Additional
                                                  Information - Principal
                                                  Underwriter; Distribution
                                                  Plans

22. Calculation of Performance Data...............Statement of Additional
                                                  Information - Investment
                                                  Results

23. Financial Statements..........................Statement of Additional
                                                  Information - Financial
                                                  Statements















                                      -4-
<PAGE>






   
Pioneer America
Income Trust
Class A, Class B and Class C Shares
Prospectus
April 24, 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 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 the Trust's
Statement of Additional Information, also dated April 24, 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 OF CONTENTS                     PAGE
 ----    -------------------------------------------------   -------
I.        EXPENSE INFORMATION                                    2
II.       FINANCIAL HIGHLIGHTS                                   3
III.      INVESTMENT OBJECTIVE AND POLICIES                      5
           U.S. Government Securities                            5
           GNMA Certificates                                     5
           "When-Issued" GNMA Certificates                       6
IV.       MANAGEMENT OF THE TRUST                                6
V.        TRUST SHARE ALTERNATIVES                               7
VI.       SHARE PRICE                                            8
VII.      HOW TO BUY TRUST SHARES                                8
VIII.     HOW TO SELL TRUST SHARES                              11
IX.       HOW TO EXCHANGE TRUST SHARES                          12
X.        DISTRIBUTION PLANS                                    13
XI.       DIVIDENDS, DISTRIBUTIONS AND TAXATION                 14
XII.      SHAREHOLDER SERVICES                                  14
           Account and Confirmation Statements                  14
           Additional Investments                               14
           Automatic Investment Plans                           15
           Financial Reports and Tax Information                15
           Distribution Options                                 15
           Directed Dividends                                   15
           Direct Deposit                                       15
           Voluntary Tax Withholding                            15
           Telephone Transactions and Related Liabilities       15
           FactFone(SM)                                         15
           Retirement Plans                                     15
           Telecommunications Device for the Deaf (TDD)         16
           Systematic Withdrawal Plans                          16
           Reinstatement Privilege (Class A Shares Only)        16
XIII.     THE TRUST                                             16
XIV.      INVESTMENT RESULTS                                    16
    

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.

                                      1
<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 annual operating expenses based upon actual
expenses incurred for the fiscal year ended December 31, 1995. For Class C
shares, operating expenses are based on estimated expenses that would have
been incurred if Class C shares had been outstanding for the entire fiscal
year ended December 31, 1995.
    

Shareholder Transaction Expenses:     Class A      Class B      Class C+
                                      ---------    ---------   -----------
 Maximum Initial Sales Charge on
    Purchases (as a percentage of
    offering price)                     4.50%(1)     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
  proceeds, 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)                       0.30%        0.30%         0.30%
 12b-1 Fees                             0.25%        1.00%         1.00%
 Other Expenses (including
  transfer agent fee, custodian
  fees and accounting and
  printing expenses)                    0.45%        0.42%         0.42%
                                        -------      -------     ---------
Total Operating Expenses (after
  fee reduction):(3)                    1.00%        1.72%         1.72%
                                        =======      =======     =========

   
  + Class C shares were first 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 ("CDSC"). See "How to Sell Fund
    Shares."
    

(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 ("PMC")
    agreed not to impose a portion of its management fee and to make other
    arrangements, if necessary, to limit the Class A shares operating
    expenses to 1.00% of average daily net assets attributable to the Class A
    shares. 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.
    

                                 Class A      Class B      Class C
                                ---------    ---------   -----------
Expenses Absent Fee
  Reduction
Management Fee                    0.50%        0.50%         0.50%
 Total Operating Expenses         1.22%        1.97%         1.97%

 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:

                          1 Year    3 Years    5 Years     10 Years
                          -------    -------    -------   ---------
Class A Shares             $55        $75        $ 98       $162
Class B Shares
 --Assuming complete
   redemption at end
   of period               $58        $84        $113       $184*
 --Assuming no
   redemption              $17        $54        $ 94       $184*
Class C Shares**
 --Assuming complete
   redemption at end
   of period               $27        $54        $ 93       $203
 --Assuming no
   redemption              $17        $54        $ 93       $203

 *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% 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 returns vary from year to year and may be higher or lower
than those shown.

For further information regarding management fees, Rule 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. ("NASD").
    

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, 1995 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 is a new
class 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>

                                                                                                     May 31
                                          For the Year Ended December 31,                              to          
                    --------------------------------------------------------------------------    December 31,    
                      1995       1994       1993       1992        1991       1990       1989         1988
                     -------    -------    -------     -------    -------    -------    -------   ------------
<S>                 <C>        <C>        <C>         <C>        <C>         <C>        <C>          <C>
Net asset value,
  beginning of
  period             $ 9.41     $10.48     $10.27     $10.35      $10.03     $10.04     $ 9.86       $10.00
                      ------     ------     ------     ------     ------     ------      ------      ----------
Increase
  (decrease) from
  investment
  operations:
 Net investment
  income             $ 0.68     $ 0.66     $ 0.68     $ 0.73      $ 0.84     $ 0.87     $ 0.90       $ 0.51
 Net realized
  and unrealized
  gain (loss) on
    investments        0.79      (1.07)      0.24      (0.07)       0.33      (0.02)      0.18        (0.14)
                      ------     ------     ------     ------     ------     ------      ------      ----------
   Total increase
     (decrease) from
     investment
     operations      $ 1.47     $(0.41)    $ 0.92     $ 0.66      $ 1.17     $ 0.85     $ 1.08       $ 0.37
Distribution to
  shareholders
  from:
 Net investment
  income              (0.68)     (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    $ 0.79     $(1.07)    $ 0.21     $(0.08)     $ 0.32     $(0.01)    $ 0.18       $(0.14)
                      ------     ------     ------     ------     ------     ------      ------      ----------
Net asset value,
  end of period      $10.20     $ 9.41     $10.48     $10.27      $10.35     $10.03     $10.04       $ 9.86
                      ======     ======     ======     ======     ======     ======      ======      ==========
Total return*         16.06%     (3.97)%     9.07%      6.67%      12.14%      8.99%     11.49%        3.76%
Net assets, end
  of period (in
  thousands)        $162,708   $161,858   $105,892    $85,425    $43,711     $17,160    $10,533       $4,634
Ratio of net
  operating
  expenses to
  average net
   assets              1.02%+     1.00%      1.00%      1.03%       0.75%      0.75%      0.75%        0.67%**
Ratio of net
  investment
  income to
  average net
   assets              6.85%+     6.84%      6.37%      7.01%       8.07%      8.75%      9.10%        8.86%**
Portfolio
  turnover rate       62.25%     60.50%     41.50%     54.50%      36.54%     69.12%     66.06%       61.20%**
Ratios assuming
  no reduction of
  fees or
  expenses
   by PMC or
  reduction of
  fees paid
  indirectly:
  Net operating
  expenses             1.22%      1.12%      1.13%      1.25%       1.75%      1.81%      2.36%        3.01%**
  Net investment
  income               6.65%      6.72%      6.24%      6.79%       7.07%      7.69%      7.49%        6.52%**
Ratios assuming
  a reduction of
  fees and
  expenses  by
  PMC and a
  reduction for
  fees paid
  indirectly:
  Net operating
  expenses             1.00%
  Net investment
  income               6.87%
</TABLE>

   
  + Ratios assuming no reduction for fees paid indirectly.
  * 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.
    


                                      3
<PAGE>

For Each Class B Share Outstanding throughout Each Period:

                                        For the Year
                                            Ended          April 29, 1994
                                        December 31,       to December 31,
                                            1995                1994
                                        --------------   -------------------
Net asset value, beginning of
  period                                   $ 9.40              $ 9.85
                                         ------------      -----------------
Increase/decrease from investment
  operations:
 Net investment income                     $ 0.61              $ 0.40
 Net realized and unrealized loss
  on investments                             0.77               (0.45)
                                         ------------      -----------------
   Total increase/decrease from
  investment operations                    $ 1.38              $(0.05)
Distribution to shareholders from:
 Net investment income                      (0.61)              (0.40)
Net decrease in net asset value            $ 0.77              $(0.45)
                                         ------------      -----------------
Net asset value, end of period             $10.17              $ 9.40
                                         ============      =================
Total return*                               15.08%              (0.57)%
Net assets, end of period (in
  thousands)                                $6,992              $2,170
Ratio of net operating expenses to
  average net assets                         1.77%+              1.78%**
Ratio of net investment income to
  average net assets                         5.92%+              6.35%**
Portfolio turnover rate                     62.25%              60.50%**
Ratios assuming no reduction of
  fees or expenses by PMC or
  reduction of fees paid
  indirectly:
  Net operating expenses                     1.97%               1.90%**
  Net investment income                      5.72%               6.23%**
Ratios assuming a reduction of fees
  and expenses by PMC and a
  reduction for fees paid
  indirectly:
  Net operating expenses                     1.72%
  Net investment income                      5.97%

   
  + Ratios assuming no reduction for fees paid indirectly.

  * 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.
    


                                      4
<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 September 30, 1995, for federal credit unions.

U.S. Government Securities in which the Trust may invest 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. Accordingly, the market value of these securities
held in the Trust's portfolio and 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, PMC, 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 may 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 FHA 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 U.S. 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.

                                      5
<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 seven 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 policy
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 PMC as investment adviser, the Trust
requires no employees other than its executive officers, all of whom receive
their compensation from PMC 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 PMC 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. PMC 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 PMC, 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 PMC, including the Trust, is
overseen by the Domestic Fixed Income Portfolio Management Committee, which
consists of PMC's
    


                                      6
<PAGE>

   
most senior domestic fixed income professionals. The committee is chaired by
David D. Tripple, PMC's President and Chief Investment Officer and Executive
Vice President of each of the Pioneer mutual funds. Mr. Tripple joined PMC in
1974 and has had general responsibility for PMC's investment operations and
specific portfolio assignments for over five years. Fixed income investments
made by PMC, including those made on behalf of the Trust, are under the
general supervision of Sherman B. Russ, Vice President of PMC and the Trust.
Mr. Russ joined PMC 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 PMC in 1988 and is a Vice
President.

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

Under the terms of its contract with the Trust, PMC 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. PMC 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 PMC 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 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 PMC, 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 PMC,
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 PMC's brokerage allocation practices.

As compensation for its management services and certain expenses which PMC
incurs, PMC 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, 1995, the Trust incurred net
expenses of $2,036,708, including management fees paid or payable to PMC of
$489,986 after reduction pursuant to PMC's voluntary expense limitation
agreement.

PMC 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 Class B and Class C 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 PMC at any time.
    

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 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 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 attribut-

                                      7
<PAGE>

able 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 receipt 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:

                                      8
<PAGE>

                              Sales Charge as % of       Dealer
                              --------------------     Allowance
                                            Net        as a % of
                              Offering     Amount       Offering
    Amount of Purchase         Price      Invested       Price
- --------------------------    --------    --------    ------------
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

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 ("Group
Plans") under which a sponsoring organization makes recommendations to,
permits group solicitation of, or otherwise facilitates purchases by, its
employees, members or participants. Information about such arrangements is
available from PFD. Class A shares of the Fund may be sold at net asset value
without a sales charge to 401(k) retirement plans with 100 or more
participants or at least $500,000 in plan assets.

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 PMC 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 PMC 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 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. 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 immediately 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.
    


                                      9
<PAGE>

Class B Shares

You may buy Class B shares at the net asset value per share next computed
after receipt of a purchase order without 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.

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

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

                                      10
<PAGE>

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 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);
(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 any 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, PSC 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
by PSC. Good order means that there are no outstanding claims or requests to
hold redemptions on the
    


                                      11
<PAGE>

account, certificates are endorsed by the record 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 per day 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
Pioneer mutual fund 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(SM), 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.

                                      12
<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, 1995, there was an allowable carryover
of distribution expenses reimbursable to PFD of $2,098 (less than 0.01% 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
    


                                      13
<PAGE>

   
after purchase. Commencing in the 13th month following the purchase of Class
C shares, dealers will become eligible for additional annual distribution
fees and service fees of up to 0.75% and 0.25%, respectively, of the net
asset value of 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 to
shareholders 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, exchanges
or repurchases of Trust shares paid to individuals and other non-exempt
payees will be subject to 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 Internal
Revenue Service ("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.

                                      14
<PAGE>

Automatic Investment Plans

You may arrange for regular automatic investments of $50 or more through
government/military allotments, payroll 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., PGI IRA Cust for
John Smith may only go into another account registered PGI 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(SM) is an automated inquiry and telephone transaction system
available to Pioneer shareholders by dialing 1-800-225-4321. FactFone(SM)
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(SM) 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(SM). 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.

                                      15
<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 a diversified, open-end 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

                                      16
<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 indices,
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.

                                      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*

   
Money Market Fund

       Pioneer Cash Reserves Fund
    

*Not suitable for retirement accounts

                                      19
<PAGE>

[Cover]

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

   
0496-3263
(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 24, 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 24, 1996, as amended and/or supplemented from time to
time, 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.  The most  recent  Annual  Report to  Shareholders  is  attached  to this
Statement of Additional Information and is hereby incorporated by reference.
    

                                TABLE OF CONTENTS

                                                                          Page

   
1.  Investment Policies and Restrictions...................................  2
2.  Management of the Trust................................................  6
3.  Investment Adviser..................................................... 10
4.  Principal Underwriter ................................................. 10
5.  Distribution Plans..................................................... 11
6.  Shareholder Servicing/Transfer Agent................................... 11
7.  Custodian.............................................................. 14
8.  Independent Public Accountants......................................... 14
9.  Portfolio Transactions................................................. 14
10. Tax Status............................................................. 14
11. Description of Shares.................................................. 16
12. Certain Liabilities.................................................... 18
13. Letter of Intention.....................................................18
14. Systematic Withdrawal Plan..............................................19
15. Determination of Net Asset Value........................................19
16. Investment Results......................................................20
17. Financial Statements....................................................20
         Index Descriptions.................................................24
         Performance Statistics.............................................24
         Other Pioneer Information..........................................24
    

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

   
        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 rates,


                                      -2-
<PAGE>

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

                                      -4-
<PAGE>

   
         (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 (Russian timber joint venture);  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.

MARGUERITE A. PIRET, Trustee,  DOB:  May 1948
One Boston Place, Suite 2635, Boston, MA 02108


                                      -6-
<PAGE>

         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.

         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 

                                      -7-
<PAGE>

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.


                                             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 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 serve as
  investment  vehicles for the  variable  annuity and  variable  life  insurance
  contracts  of various  insurance  companies or for certain  qualified  pension
  plans.

   
         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 14% of such shares.

         The Trust pays no  salaries  or  compensation  to any of its  officers.
Commencing  on January 1, 1996,  the Trust pays an annual  trustees' fee to each
Trustee  who is not  affiliated  with PGI,  PMC,  PFD or PSC  consisting  of two
components:  (a) a base fee of $500 and (b) a variable  fee,  calculated  on the
basis of the average net assets of each series,  estimated  to be  approximately
$173 for 1996 for the Trust.  In  addition,  the Trust pays a per meeting fee of
$120 to each Trustee who is not affiliated  with PGI, PMC, PFD or PSC. The Trust
also pays an annual committee participation fee to Trustees who serve as members
of committees  established to act on behalf of one or more of the Pioneer mutual
    


                                      -8-
<PAGE>

   
funds.  Committee  fees are  allocated  to the Trust on the basis of the Trust's
average net assets.  Each Trustee who is a member of the Audit Committee for the
Pioneer mutual funds receives an annual fee equal to 10% of the aggregate annual
trustees' fee, except the Committee Chairperson who receives an annual fee equal
to 20% of the aggregate  annual trustees' fee. The 1996 fees for Audit Committee
members and the Audit  Committee  Chairperson  are expected to be  approximately
$6,000 and  $12,000,  respectively.  Members of the  Pricing  Committee  for the
Pioneer  mutual funds,  as well as any other  committee  which renders  material
functional  services to the Board of  Trustees  for the  Pioneer  mutual  funds,
receives  an annual  fee equal to 5% of the  annual  trustees'  fee,  except the
Committee  Chairperson  who  receives  an annual  fee equal to 10% of the annual
trustees'  fee.  The 1996 fees for  Pricing  Committee  members  and the Pricing
Committee  Chairperson  are  expected  to be  approximately  $3,000 and  $6,000,
respectively.  Any such fees paid to affiliates  or  interested  persons of PGI,
PMC, PFD or PSC are reimbursed to the Trust under its management  contract.  For
the fiscal year ended  December 31, 1995 the Trust paid an annual  trustees' fee
of $100,  and a payment of $1,000 plus  expenses per meeting  attended,  to each
Trustee  who was not  affiliated  with PGI,  PMC,  PFD or PSC and paid an annual
trustees'  fee of $500 plus expenses to each Trustee  affiliated  with PGI, PMC,
PFD or PSC.

         The following  table provides  information  regarding the  compensation
paid by the Trust and other Pioneer Funds to the Trustees for their services.
    

<TABLE>
<CAPTION>

                                                    Pension or          Total Compensa-
                                                    Retirement          tion from the
                                                     Benefits           Trust and other
                             Aggregate               Accrued             funds in the
                           Compensation           as Part of the         Pioneer Family
Trustee                   From the Trust*         Fund's Expenses       of Mutual Funds**

<S>                         <C>                        <C>                <C>     
   
John F. Cogan, Jr.          $  500                     $0                 $11,000*
Richard H. Egdahl, M.D.      2,171                      0                  63,315
Margaret B.W. Graham         2,171                      0                  62,398
John W. Kendrick             2,171                      0                  62,398
Marguerite A. Piret          2,797                      0                  76,704
David D. Tripple               500                      0                  11,000
Stephen K. West              2,453                      0                  68,180
John Winthrop                2,590                      0                  71,199
Stephen G. Kasnet                0                      0                       0
                           -------------------------------------------------------
    

  Totals                   $15,353                     $0                $426,694
                           =======                     ===               ========

- -----------------------------
</TABLE>

*    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, 1995. As of such date,  there were
     22 Pioneer mutual funds.

         Any such fees and expenses paid to affiliates or interested  persons of
PGI, 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 


                                      -9-
<PAGE>

   
than 1% of the  outstanding  shares  of the  Trust.  As March  29,  1996,  David
Siersdale & Mary Ann Siersdale, JT TEN, 51 Morton St., Needham Heights, MA 02194
owned  approximately  36.72% (11,955) of the  outstanding  Class C shares of the
Fund; PFD, 60 State Street,  Boston, MA 02109 owned approximately 30.62% (9,970)
of the  outstanding  Class C shares of the Fund;  Debra E. Owen and Justin  Alan
Owen,  JT TEN, 811 Goettel CT.,  Benicia,  CA 94510 owned  approximately  26.92%
(8,764) of the outstanding Class C shares of the Fund.
    

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  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.

   
         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, 1995,  1994 and 1993, the Trust's  management fees were
reduced by $331,265,  $155,511 and $133,160,  respectively,  resulting in actual
management  fees paid during  these  periods to PMC of  $489,986,  $692,136  and
$587,361,  respectively.  See  the  Notes  to the  Financial  Statements  in the
December 31, 1995 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, its affiliates and their 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,
    

                                      -10-
<PAGE>

interested  persons of the  Trust,  as  defined  in the 1940 Act,  approved  the
Underwriting Agreement.  The Underwriting Agreement will continue in effect from
year to year if annually  approved by the  Trustees.  During the Trust's  fiscal
years ending  December 31, 1995,  1994 and 1993,  net  underwriting  commissions
retained  by  PFD  in  connection   with  the  offering  of  Trust  shares  were
approximately $44,343, $76,256 and $58,571, respectively.  Commissions reallowed
to dealers by PFD in those  periods were  approximately  $636,642,  $543,725 and
$504,896, 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.

   
         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 immediate resale;  (iii) 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  reimburses  PFD  for its
expenditures in financing certain activities 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.
    

                                      -11-
<PAGE>

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's  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.

         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's service fee at a
rate equal to 0.25% of the current value 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 net asset value of 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.
    

                                      -12-
<PAGE>

         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 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 Class or Classes 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,  1995,  the Trust  incurred
distribution  fees of $425,890 pursuant to the Class A Plan and $39,907 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.   The  Trust  had  not  incurred  any
distribution  fees  pursuant  to the  Class C Plan.  Class C shares  were  first
offered January 31, 1996.

         During the fiscal  year  ended  December  31,  1995,  CDSCs,  at a rate
declining from a maximum of 4.0% of the lower of the cost or market value of the
shares  redeemed,  of $17,099 were charged to 
    


                                      -13-
<PAGE>

   
redemptions  of Class B shares made within 3 years of purchase (as  described in
"How to Buy Trust  Shares"  in the  Prospectus).  Such  CDSCs are paid to PFD in
reimbursement  of expenses  related to servicing of  shareholders'  accounts and
compensation paid to dealers and sales personnel.
    

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,  as the case may be,
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.

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;

                                      -14-
<PAGE>

                  (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 under the circumstances. PMC has complete
freedom as to the  markets in which 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 generally attempts to negotiate with underwriters to decrease the commission
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 any of the  Pioneer
mutual funds.  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,
industries,   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.

         In addition to the Fund,  PMC acts as  investment  adviser to the other
Pioneer mutual funds and certain  private  accounts with  investment  objectives
similar to those of the Fund. As such, securities may meet investment objectives
of the Fund,  such other funds and such  private  accounts.  In such cases,  the
decision to recommend to purchase for one fund or account rather than another is
based on a number of  factors.  The  determining  factors  in most cases are the
amount  of  securities  of the  issuer  then  outstanding,  the  value  of those
securities and the market for them.  Other factors  considered in the investment
recommendations  include other investments which each company presently has in a
particular  industry or country and the availability of investment funds in each
mutual fund or account.

         It is possible  that, at times,  identical  securities  will be held by
more than one mutual fund and/or  account.  However,  the position of any mutual
fund or  account  in the same  issue  may vary and the  length  of time that any
mutual fund or account may choose to hold its  investment  in the same
    

                                      -15-
<PAGE>

   
issue may likewise  vary. To the extent that the Fund,  another  Pioneer  mutual
fund or a private  account  managed by PMC seeks to acquire the same security at
about the same time,  the Fund may not be able to acquire as large a position in
such  security  as it  desires  or it may  have to pay a  higher  price  for the
security. Similarly, the Fund may not be able to obtain as large an execution of
an order to sell or as high a price for any particular portfolio security if PMC
decides to sell on behalf of another account the same portfolio  security at the
same time. On the other hand, if the same  securities  are bought or sold at the
same  time by more  than one  account,  the  resulting  participation  in volume
transactions  could produce better executions for the Fund or other account.  In
the event that more than one account  purchases or sells the same  security on a
given  date,  the  purchases  and  sales  will  normally  be made as  nearly  as
practicable  on a pro rata  basis in  proportion  to the  amounts  desired to be
purchased or sold by each.
    

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

   
         During the fiscal years ended  December 31,  1993,  1994 and 1995,  the
Trust did not pay any brokerage commissions.
    

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 U.S.  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.

   
         Redemptions  and exchanges are taxable  events.  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,  all or a
portion of the sales  charge  paid on such  shares in not  included in their tax
basis under the Code,


                                      -16-
<PAGE>

   
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
(including those made pursuant to an automatic dividend  reinvestment) 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.  For the fiscal year ended
December 31, 1995, the Trust had a capital loss carryforward of $6,494,180 which
will expire between 2001 and 2003 if not utilized.
    

         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  Number 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.
non-resident  alien  withholding tax (or withholding tax at a lower treaty rate)
on any dividends treated as ordinary income.  Shareholders  should consult their
own tax advisers on these matters and on state,  local and other  applicable tax
laws.
    

                                      -17-
<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  State  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 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 


                                      -18-
<PAGE>

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 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
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.

                                      -19-
<PAGE>

         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:
    

                                   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

                                      -20-
<PAGE>

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, 1995,  determined
in accordance  with the formula above was 5.68% for Class A shares and 5.16% for
Class B shares, except that absent expense limitations,  the Trust's yield would
have been 5.59% for Class A shares and 5.07% for Class B shares.
Class C shares were first offered on January 31, 1996.
    

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.

                                      -21-
<PAGE>

         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 $1,000, 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  $1,000
                             initial  payment  made  at  the  beginning  of  the
                             designated period (or fractional portion thereof)

For  purposes of the above  computation,  it is assumed  that the maximum  sales
charge was  deducted  from the initial  investment  and 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 periods ended December
31, 1995:

                    1 Year       5 Years        Commencement
                    ------       -------        ------------

Class A Shares       10.88%        7.78%        8.33% *
Class B Shares       11.08%        N/A          6.12% **
Class C Shares        N/A          N/A           N/A  ***

- -----------
           *      Commencement of operations, June 1, 1988.
          **      Class B shares first offered on April 28, 1994.
         ***      Class C shares first offered on January 31, 1996.

         Class A share results reflect the maximum sales charge of 4.50%.  Class
B share  results  reflect the effect of the CDSC that would have been charged if
shares  were  redeemed at the end of each  period.  If PMC's  voluntary  fee and
expense reduction  agreement had not been in place, total return would have been
lower.
    

                                      -22-
<PAGE>

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:

   
         o        net asset value prices for all Pioneer mutual funds;

         o        annualized 30-day yields on Pioneer's fixed-income funds;

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

         o        dividends  and  capital  gains  distributions  on all  Pioneer
                  mutual funds.
    

                                      -23-
<PAGE>

   
         Yields  are  calculated  in  accordance  with  SEC  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  maximum
applicable 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, 1995
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.
    






                                      -24-
<PAGE>


<TABLE>
<CAPTION>
                                          Pioneer America Income Trust A

   Date    Initial         Offering Price    Sales Charge     Shares            Net Asset     Initial Net
           Investment                                         Purchased           Value          Asset
                                               Included                         Per Share        Value

  <S>          <C>             <C>               <C>              <C>            <C>            <C>   
  6/1/88       $10,000         $10.47            4.50%            955.110        $10.0000       $9,550


                                       Dividends and Capital Gains Reinvested

                                                 Value of Shares

   Date    From              From Cap.      From Dividends      Total Value
           Investment          Gains          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      $10,009          $52             $5,652            $15,713
 12/31/94      $8,987           $47             $6,055            $15,089
   
 12/31/95      $9,741           $51             $7,721            $17,513
    

</TABLE>





                                      -25-
<PAGE>
   

<TABLE>
<CAPTION>
                                          Pioneer America Income Trust B

   Date        Initial     Offering Price    Sales Charge         Shares        Net Asset     Initial Net
             Investment                                          Purchased        Value          Asset
                                               Included                         Per Share        Value
 <S>           <C>            <C>                <C>             <C>             <C>            <C>    
 4/29/94       $10,000        $9.8500            4.00%           1,015.228       $9.8500        $10,000


                                    Dividends and Capital Gains Reinvested
  
                                               Value of Shares

   Date         From         From Cap.      From Dividends      Total Value
             Investment        Gains          Reinvested
                             Reinvested
 <S>           <C>               <C>             <C>              <C>   
 12/31/94      $9,543            $0              $400             $9,943
 12/31/95      $10,324           $0             $1,118            $11,042
    

</TABLE>






                                      -26-
<PAGE>
   
                             COMPARATIVE PERFORMANCE
                               INDEX DESCRIPTIONS

The following  securities  indices are well-known,  unmanaged measures of market
performance. Advertisements and sales literature for the Fund may refer to these
indices or may present  comparisons  between the performance of the Fund and one
or more of the indices.  Other indices may be used, if appropriate.  The indices
are not available for direct  investment.  The data presented is not meant to be
indicative of the  performance of the Fund,  reflects past  performance and does
not guarantee future results.

S&P 500
This index is a readily available, carefully constructed,  market value weighted
benchmark  of common  stock  performance.  Currently,  the S&P  Composite  Index
includes  500 of the  largest  stocks  (in terms of stock  market  value) in the
United States; prior to March 1957 it consisted of 90 of the largest stocks.

DOW JONES INDUSTRIAL AVERAGE
This is a total return index based on the performance of 30 blue chip stocks.

U.S. SMALL STOCK INDEX
This index is a market value  weighted  index of the ninth and tenth  deciles of
the New York Stock  Exchange  (NYSE),  plus stocks listed on the American  Stock
Exchange (AMEX) and over-the-counter  (OTC) with the same or less capitalization
as the upper bound of the NYSE ninth decile.

U.S. INFLATION
The  Consumer  Price  Index  for All Urban  Consumers  (CPI-U),  not  seasonally
adjusted, is used to measure inflation,  which is the rate of change of consumer
goods prices.  Unfortunately,  the  inflation  rate as derived by the CPI is not
measured  over the same period as the other asset  returns.  All of the security
returns are measured  from one  month-end to the next  month-end.  CPI commodity
prices are collected during the month.  Thus,  measured  inflation rates lag the
other  series  by about  one-half  month.  Prior to  January  1978,  the CPI (as
compared with CPI-U) was used.  Both inflation  measures are  constructed by the
U.S. Department of Labor, Bureau of Labor Statistics, Washington, DC.

S&P/BARRA INDEXES
The S&P/BARRA Growth and Value Indexes are constructed by dividing the stocks in
the S&P 500 Index according to price-to-book  ratios.  The Growth Index contains
stocks with higher  price-to-book  ratios,  and the Value Index contains  stocks
with  lower  price-to-book   ratios.  Both  indexes  are  market  capitalization
weighted.

                                      -27-
    
<PAGE>
   
                             COMPARATIVE PERFORMANCE
                               INDEX DESCRIPTIONS

LONG-TERM U.S. GOVERNMENT BONDS

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 U.S. GOVERNMENT BONDS
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 from 1934-1986 are obtained from the CRSP Government Bond File.

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.) From  1934-1942,  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. From 1926-1933, 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.

MSCI
Morgan  Stanley  Capital  International   Indices,   developed  by  the  Capital
International  S.A., are based on share prices of some 1470 companies  listed on
the stock exchanges around the world.

Countries in the MSCI EAFE Portfolio are:
Australia;  Austria;  Belgium;  Denmark;  Finland;  France;  Germany; Hong Kong;
Italy;  Japan;  Netherlands;  N.  Zealand;  Norway;  Singapore/Malaysia;  Spain;
Sweden; Switzerland; United Kingdom.

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

                                      -28-
    
<PAGE>
   
                             COMPARATIVE PERFORMANCE
                               INDEX DESCRIPTIONS

LONG-TERM U.S. CORPORATE BONDS
For  1969-1991,  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.

Over  1926-1968  the total  returns  were  calculated  by  summing  the  capital
appreciation returns and the income returns. For the period 1946-1968,  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.

U.S. (30 DAY) TREASURY BILLS
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 until 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.

NAREIT-EQUITY INDEX
All of the  data is  based  upon the last  closing  price of the  month  for all
tax-qualified  REITs  listed  on the  NYSE,  AMSE  and the  NASDAQ.  The data is
market-value-weighted.  Prior to 1987 REITs were added to the index the  January
following  their  listing.  Since 1987 Newly formed or listed REITs are added to
the total  shares  outstanding  figure in the month that the shares are  issued.
Only  common  shares  issued by the REIT are  included  in the index.  The total
return  calculation  is based upon the weighing at the  beginning of the period.
Only  those  REITs  listed for the  entire  period are used in the total  return
calculation.  Dividends are included in the month based upon their payment date.
There is no smoothing of income. Liquidating dividends, whether full or partial,
are treated as income.

                                      -29-
    
<PAGE>
                             COMPARATIVE PERFORMANCE
                               INDEX DESCRIPTIONS

   
RUSSELL 2000 SMALL STOCK INDEX

The  Russell  2000  measures  the stock  performance  of the 2,000  smallest  US
companies.  The Russell Indexes (TM) are reconstituted  annually as of June 1st,
based on May 31 market capitalization rankings.

WILSHIRE REAL ESTATE SECURITIES INDEX
The Wilshire Real Estate  Securities  Index is a market  capitalization-weighted
index which measures the performance of more than 85 securities.

The index  contains  performance  data on five  major  categories  of  property;
office, retail, industrial, apartment and miscellaneous. Additionally, the Index
has real estate portfolio encumbered by 16% third party mortgages. The companies
in the WRESEC are 79% equity  and hybrid  REIT's and 21% real  estate  operating
companies. The capitalization is 47% NYSE, 33% AMEX and 20% OTC."

STANDARD & POOR'S MIDCAP 400 INDEX
The Standard and Poor's MidCap 400 Index is a  market-value-weighted  index. The
performance  data for the MidCap 400 Index were  calculated by taking the stocks
presently in the MidCap 400 Index and tracking them backwards in time as long as
there were prices reported.  No attempt was made to determine what stocks "might
have  been" in the  MidCap  400  Index  five or ten  years  ago had it  existed.
Dividends  are  reinvested  on a monthly  basis prior to June 30, 1991,  and are
reinvested daily thereafter.


The S&P MidCap 400 Index and the S&P 500 together represent approximately 85% of
the total market capitalization of stocks traded in the United States.

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.

    





Source:    Ibbotson Associates

                                      -30-
<PAGE>


                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT


   
          S&P 500       Dow      U.S. Small                  S&P/     S&P/   
                       Jones       Stock         U.S.       BARRA    BARRA
                    Industrials    Index      Inflation    Growth    Value
Dec 1928   43.61       55.38       39.69       -0.97         N/A      N/A
Dec 1929   -8.42      -13.64      -51.36        0.20         N/A      N/A
Dec 1930  -24.90      -30.22      -38.15       -6.03         N/A      N/A
Dec 1931  -43.34      -49.03      -49.75       -9.52         N/A      N/A
Dec 1932   -8.19      -16.88       -5.39      -10.30         N/A      N/A
Dec 1933   53.99       73.71      142.87        0.51         N/A      N/A
Dec 1934   -1.44        8.07       24.22        2.03         N/A      N/A
Dec 1935   47.67       43.77       40.19        2.99         N/A      N/A
Dec 1936   33.92       30.23       64.80        1.21         N/A      N/A
Dec 1937  -35.03      -28.88      -58.01        3.10         N/A      N/A
Dec 1938   31.12       33.16       32.80       -2.78         N/A      N/A
Dec 1939   -0.41        1.31        0.35       -0.48         N/A      N/A
Dec 1940   -9.78       -7.96       -5.16        0.96         N/A      N/A
Dec 1941  -11.59       -9.88       -9.00        9.72         N/A      N/A
Dec 1942   20.34       14.12       44.51        9.29         N/A      N/A
Dec 1943   25.90       19.06       88.37        3.16         N/A      N/A
Dec 1944   19.75       17.19       53.72        2.11         N/A      N/A
Dec 1945   36.44       31.60       73.61        2.25         N/A      N/A
Dec 1946   -8.07       -4.40      -11.63       18.16         N/A      N/A
Dec 1947    5.71        7.61        0.92        9.01         N/A      N/A
Dec 1948    5.50        4.27       -2.11        2.71         N/A      N/A
Dec 1949   18.79       20.92       19.75       -1.80         N/A      N/A
Dec 1950   31.71       26.40       38.75        5.79         N/A      N/A
Dec 1951   24.02       21.77        7.80        5.87         N/A      N/A
Dec 1952   18.37       14.58        3.03        0.88         N/A      N/A
Dec 1953   -0.99        2.02       -6.49        0.62         N/A      N/A
Dec 1954   52.62       51.25       60.58       -0.50         N/A      N/A
Dec 1955   31.56       26.58       20.44        0.37         N/A      N/A
Dec 1956    6.56        7.10        4.28        2.86         N/A      N/A
Dec 1957  -10.78       -8.63      -14.57        3.02         N/A      N/A
Dec 1958   43.36       39.31       64.89        1.76         N/A      N/A
Dec 1959   11.96       20.21       16.40        1.50         N/A      N/A
Dec 1960    0.47       -6.14       -3.29        1.48         N/A      N/A
Dec 1961   26.89       22.60       32.09        0.67         N/A      N/A
Dec 1962   -8.73       -7.43      -11.90        1.22         N/A      N/A
    


                                      -31-
<PAGE>

                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT


          S&P 500       Dow      U.S. Small                  S&P/     S&P/   
                       Jones       Stock         U.S.       BARRA    BARRA
                    Industrials    Index      Inflation    Growth    Value

   
Dec 1963   22.80       20.83       23.57        1.65         N/A      N/A
Dec 1964   16.48       18.85       23.52        1.19         N/A      N/A
Dec 1965   12.45       14.39       41.75        1.92         N/A      N/A
Dec 1966  -10.06      -15.78       -7.01        3.35         N/A      N/A
Dec 1967   23.98       19.16       83.57        3.04         N/A      N/A
Dec 1968   11.06        7.93       35.97        4.72         N/A      N/A
Dec 1969   -8.50      -11.78      -25.05        6.11        N/A      N/A
Dec 1970    4.01        9.21      -17.43        5.49        N/A      N/A
Dec 1971   14.31        9.83       16.50        3.36        N/A      N/A
Dec 1972   18.98       18.48        4.43        3.41        N/A      N/A
Dec 1973  -14.66      -13.28      -30.90        8.80        N/A      N/A
Dec 1974  -26.47      -23.58      -19.95       12.20        N/A      N/A
Dec 1975   37.20       44.75       52.82        7.01       31.72    43.38
Dec 1976   23.84       22.82       57.38        4.81       13.84    34.93
Dec 1977   -7.18      -12.84       25.38        6.77      -11.82    -2.57
Dec 1978    6.56        2.79       23.46        9.03        6.78     6.16
Dec 1979   18.44       10.55       43.46       13.31       15.72    21.16
Dec 1980   32.42       22.17       39.88       12.40       39.40    23.59
Dec 1981   -4.91       -3.57       13.88        8.94       -9.81     0.02
Dec 1982   21.41       27.11       28.01        3.87       22.03    21.04
Dec 1983   22.51       25.97       39.67        3.80       16.24    28.89
Dec 1984    6.27        1.31       -6.67        3.95        2.33    10.52
Dec 1985   32.16       33.55       24.66        3.77       33.31    29.68
Dec 1986   18.47       27.10        6.85        1.13       14.50    21.67
Dec 1987    5.23        5.48       -9.30        4.41        6.50     3.68
Dec 1988   16.81       16.14       22.87        4.42       11.95    21.67
Dec 1989   31.49       32.19       10.18        4.65       36.40    26.13
Dec 1990   -3.17       -0.56      -21.56        6.11        0.20    -6.85
Dec 1991   30.55       24.19       44.63        3.06       38.37    22.56
Dec 1992    7.67        7.41       23.35        2.90        5.07    10.53
Dec 1993    9.99       16.94       20.98        2.75        1.68    18.60
Dec 1994    1.31        5.06        3.11        2.78        3.13    -0.64
Dec 1995   37.43       36.84       34.46        2.74       38.13    36.99
    



                                      -32-
<PAGE>

                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT



                         Intermediate      MSCI               Long-
          Long-Term       -Term U.S.       EAFE        6     Term U.S.    U.S.
          U.S. Gov't      Government     - Net of    MONTH   Corporate  (30 Day)
            Bonds           Bonds          Taxes      CDs      Bonds    T- Bill 
     
   
Dec 1925     N/A              N/A           N/A       N/A      N/A      N/A
Dec 1926     7.77             5.38          N/A       N/A      7.37     3.27
Dec 1927     8.93             4.52          N/A       N/A      7.44     3.12
Dec 1928     0.1              0.92          N/A       N/A      2.84     3.56
Dec 1929     3.42             6.01          N/A       N/A      3.27     4.75
Dec 1930     4.66             6.72          N/A       N/A      7.98     2.41
Dec 1931    -5.31            -2.32          N/A       N/A      -1.85    1.07
Dec 1932    16.84             8.81          N/A       N/A      10.82    0.96
Dec 1933    -0.07             1.83          N/A       N/A      10.38    0.30
Dec 1934    10.03             9.00          N/A       N/A      13.84    0.16
Dec 1935     4.98             7.01          N/A       N/A      9.61     0.17
Dec 1936     7.52             3.06          N/A       N/A      6.74     0.18
Dec 1937     0.23             1.56          N/A       N/A      2.75     0.31
Dec 1938     5.53             6.23          N/A       N/A      6.13    -0.02
Dec 1939     5.94             4.52          N/A       N/A      3.97     0.02
Dec 1940     6.09             2.96          N/A       N/A      3.39     0.00
Dec 1941     0.93             0.50          N/A       N/A      2.73     0.06
Dec 1942     3.22             1.94          N/A       N/A      2.60     0.27
Dec 1943     2.08             2.81          N/A       N/A      2.83     0.35
Dec 1944     2.81             1.80          N/A       N/A      4.73     0.33
Dec 1945    10.73             2.22          N/A       N/A      4.08     0.33
Dec 1946    -0.10             1.00          N/A       N/A      1.72     0.35
Dec 1947    -2.62             0.91          N/A       N/A     -2.34     0.50
Dec 1948     3.40             1.85          N/A       N/A      4.14     0.81 
Dec 1949     6.45             2.32          N/A       N/A      3.31     1.10
Dec 1950     0.06             0.70          N/A       N/A      2.12     1.20
Dec 1951    -3.93             0.36          N/A       N/A     -2.69     1.49
Dec 1952     1.16             1.63          N/A       N/A      3.52     1.66
Dec 1953     3.64             3.23          N/A       N/A      3.41     1.82
Dec 1954     7.19             2.68          N/A       N/A      5.39     0.86
Dec 1955    -1.29            -0.65          N/A       N/A      0.48     1.57
Dec 1956    -5.59            -0.42          N/A       N/A     -6.81     2.46
Dec 1957     7.46             7.84          N/A       N/A      8.71     3.14
Dec 1958    -6.09            -1.29          N/A       N/A     -2.22     1.54
Dec 1959    -2.26            -0.39          N/A       N/A     -0.97     2.95
Dec 1960    13.78            11.76          N/A       N/A      9.07     2.66
Dec 1961     0.97             1.85          N/A       N/A      4.82     2.13
Dec 1962     6.89             5.56          N/A       N/A      7.95     2.73
Dec 1963     1.21             1.64          N/A       N/A      2.19     3.12
    


                                      -33-
<PAGE>

                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT


                         Intermediate      MSCI               Long-
          Long-Term       -Term U.S.       EAFE        6     Term U.S.    U.S.
          U.S. Gov't      Government     - Net of    MONTH   Corporate  (30 Day)
            Bonds           Bonds          Taxes      CDs      Bonds    T- Bill 
                                                                                
   
Dec 1964     3.51             4.04          N/A      4.18      4.77     3.54
Dec 1965     0.71             1.02          N/A      4.68     -0.46     3.93
Dec 1966     3.65           4.69            N/A       5.75     0.20       4.76  
Dec 1967    -9.18           1.01            N/A       5.48    -4.95       4.21  
Dec 1968    -0.26           4.54            N/A       6.44     2.57       5.21 
Dec 1969    -5.07          -0.74            N/A       8.71    -8.09       6.58
Dec 1970    12.11          16.86          -11.66      7.06    18.37       6.52
Dec 1971    13.23           8.72           29.59      5.36    11.01       4.39
Dec 1972     5.69           5.16           36.35      5.38     7.26       3.84
Dec 1973    -1.11           4.61          -14.92      8.60     1.14       6.93
Dec 1974     4.35           5.69          -23.16     10.20    -3.06       8.00
Dec 1975     9.20           7.83           35.39      6.51    14.64       5.80
Dec 1976    16.75          12.87            2.54      5.22    18.65       5.08
Dec 1977    -0.69           1.41           18.06      6.12     1.71       5.12
Dec 1978    -1.18           3.49           32.62     10.21    -0.07       7.18
Dec 1979    -1.23           4.09            4.75     11.90    -4.18      10.38
Dec 1980    -3.95           3.91           22.58     12.33    -2.76      11.24
Dec 1981     1.86           9.45           -2.28     15.50    -1.24      14.71
Dec 1982    40.36          29.1            -1.86     12.18    42.56      10.54
Dec 1983     0.65           7.41           23.69      9.65     6.26       8.80
Dec 1984    15.48          14.02            7.38     10.65    16.86       9.85
Dec 1985    30.97          20.33           56.16      7.82    30.09       7.72
Dec 1986    24.53          15.14           69.44      6.30    19.85       6.16
Dec 1987    -2.71           2.90           24.63      6.58    -0.27       5.47
Dec 1988     9.67           6.10           28.27      8.15    10.70       6.35
Dec 1989    18.11          13.29           10.54      8.27    16.23       8.37
Dec 1990     6.18           9.73          -23.45      7.85     6.78       7.81
Dec 1991    19.3           15.46           12.13      4.95    19.89       5.60
Dec 1992     8.05           7.19          -12.17      3.27     9.39       3.51
Dec 1993    18.24          11.24           32.56      2.88    13.19       2.90
Dec 1994    -7.77          -5.14            7.78      5.40    -5.76       3.90
Dec 1995    31.67          16.8            11.21      5.21    26.39       5.60
    


                                      -34-
<PAGE>

                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT
     
                                           S & P    Bank
             NAREIT -  Russell  Wilshire   Midcap  Savings 
             Equity     2000  Real Estate   400    Account
     
   
Dec 1925        N/A      N/A      N/A     N/A      N/A
Dec 1926        N/A      N/A      N/A     N/A      N/A
Dec 1927        N/A      N/A      N/A     N/A      N/A
Dec 1928        N/A      N/A      N/A     N/A      N/A
Dec 1929        N/A      N/A      N/A     N/A      N/A
Dec 1930        N/A      N/A      N/A     N/A      5.30
Dec 1931        N/A      N/A      N/A     N/A      5.10
Dec 1932        N/A      N/A      N/A     N/A      4.10
Dec 1933        N/A      N/A      N/A     N/A      3.40
Dec 1934        N/A      N/A      N/A     N/A      3.50
Dec 1935        N/A      N/A      N/A     N/A      3.10
Dec 1936        N/A      N/A      N/A     N/A      3.20
Dec 1937        N/A      N/A      N/A     N/A      3.50
Dec 1938        N/A      N/A      N/A     N/A      3.50
Dec 1939        N/A      N/A      N/A     N/A      3.40
Dec 1940        N/A      N/A      N/A     N/A      3.30
Dec 1941        N/A      N/A      N/A     N/A      3.10
Dec 1942        N/A      N/A      N/A     N/A      3.00
Dec 1943        N/A      N/A      N/A     N/A      2.90
Dec 1944        N/A      N/A      N/A     N/A      2.80
Dec 1945        N/A      N/A      N/A     N/A      2.50
Dec 1946        N/A      N/A      N/A     N/A      2.20
Dec 1947        N/A      N/A      N/A     N/A      2.30
Dec 1948        N/A      N/A      N/A     N/A      2.30
Dec 1949        N/A      N/A      N/A     N/A      2.40
Dec 1950        N/A      N/A      N/A     N/A      2.50
Dec 1951        N/A      N/A      N/A     N/A      2.60
Dec 1952        N/A      N/A      N/A     N/A      2.70
Dec 1953        N/A      N/A      N/A     N/A      2.80
Dec 1954        N/A      N/A      N/A     N/A      2.90
Dec 1955        N/A      N/A      N/A     N/A      2.90
Dec 1956        N/A      N/A      N/A     N/A      3.00
Dec 1957        N/A      N/A      N/A     N/A      3.30
Dec 1958        N/A      N/A      N/A     N/A      3.38
Dec 1959        N/A      N/A      N/A     N/A      3.53
Dec 1960        N/A      N/A      N/A     N/A      3.86
Dec 1961        N/A      N/A      N/A     N/A      3.90
Dec 1962        N/A      N/A      N/A     N/A      4.08
Dec 1963        N/A      N/A      N/A     N/A      4.17
Dec 1964        N/A      N/A      N/A     N/A      4.19
    
     

                                      -35-
<PAGE>

                  PERFORMANCE STATISTICS - TOTAL RETURN PERCENT


                                           S & P    Bank
             NAREIT -  Russell  Wilshire   Midcap  Savings 
             Equity     2000  Real Estate   400    Account
          Bank Savings Account
     
   
Dec 1965        N/A      N/A      N/A     N/A      4.23
Dec 1966        N/A      N/A      N/A     N/A      4.45
Dec 1967        N/A      N/A      N/A     N/A      4.67
Dec 1968        N/A      N/A      N/A     N/A      4.68
Dec 1969        N/A      N/A      N/A     N/A      4.80
Dec 1970        N/A      N/A      N/A     N/A      5.14
Dec 1971        N/A      N/A      N/A     N/A      5.30
Dec 1972        8.01     N/A      N/A     N/A      5.37
Dec 1973       -15.52    N/A      N/A     N/A      5.51
Dec 1974       -21.40    N/A      N/A     N/A      5.96
Dec 1975        19.30    N/A      N/A     N/A      6.21
Dec 1976        47.59    N/A      N/A     N/A      6.23
Dec 1977        22.42    N/A      N/A     N/A      6.39
Dec 1978        10.34    N/A      13.04   N/A      6.56
Dec 1979        35.86    43.09    70.81   N/A      7.29
Dec 1980        24.37    38.58    22.08   N/A      8.78
Dec 1981         6.00     2.03     7.18   N/A     10.71
Dec 1982        21.60    24.95    24.47   22.68   11.19
Dec 1983        30.64    29.13    27.61   26.10    9.71
Dec 1984        20.93    -7.30    20.64    1.18    9.92
Dec 1985        19.10    31.05    22.20   35.58    9.02
Dec 1986        19.16     5.68    20.30   16.21    7.84
Dec 1987        -3.64    -8.77    -7.86   -2.03    6.92
Dec 1988        13.49    24.89    24.18   20.87    7.20
Dec 1989         8.84    16.24     2.37   35.54    7.91
Dec 1990       -15.35   -19.51   -33.46   -5.12    7.80
Dec 1991        35.7     46.05    20.03    50.1    4.61
Dec 1992        14.59    18.41     7.36    11.91   2.89
Dec 1993        19.65    18.91    15.24    13.96   2.73
Dec 1994         3.17    -1.82     1.64    -3.57   4.96
Dec 1995        15.27    28.44    13.65    30.94   5.24
    
     
Source:  Ibbotson Associates
          
     

                                      -36-
<PAGE>

   
                         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 and most  experienced
money managers in the United States.

   
         As of December 31, 1995, PMC employed a professional  investment  staff
of 44, with a combined average of 15 years' experience in the financial services
industry.

         Total assets of all Pioneer  mutual  funds at December  31, 1995,  were
approximately $12 billion  representing  982,369 shareholder  accounts - 637,060
non-retirement accounts and 345,309 retirement accounts.
    
















                                      -37-
<PAGE>
                          PIONEER AMERICA INCOME TRUST

                            PART C. OTHER INFORMATION


Item 24.  Financial Statements and Exhibits

          (a)  Financial Statements:

   
               The financial  statements of the Registrant are  incorporated  by
               reference  from the 1995 Annual Report to  Shareholders  which is
               attached  to and  incorporated  by  reference  into  Part B,  the
               Statement   of   Additional    Information    (Accession   Number
               0000831120-96-000002).
    

          (b)  Exhibits:

   
               1.   Amended and Restated Declaration of Trust, dated December 7,
                    1993.*

               1.2  Establishment and Designation of Classes.*

               1.3  Establishment and Designation of Class C Shares._

               2.   By-Laws.* and _

    
               3.   None.

               4.   None.

   
               5.   Management Contract with Pioneering Management Corporation,
                    dated January 1, 1994.*

               6.1  Underwriting Agreement with Pioneer Funds Distributor, Inc.*
                    and _

               6.2  Form of Dealer Sales Agreement.* and _

               7.   None.

               8.   Custodian Agreement with Brown Brothers Harriman & Co.*
    

               9.   Investment Company Service Agreement with Pioneering
                    Services Corporation.*

               10.  Opinion and Consent of Counsel._

                                      C-1
<PAGE>

               11.  Consent of Independent Public Accountants._

               12.  None.

               13.  Stock Purchase Agreement.*

               14.  None.

   
               15.1 Class A Shares Distribution Plan.*

               15.2 Class B Shares Distribution Plan.*

               15.3 Class C Shares Distribution Plan._
    

               16.  Description of Average Annual Total Return and Yield
                    Calculation.*

               17.  Financial Data Schedule._

   
               18.1 Multiple Class Plan for Class A and Class B Shares_

               18.2 Multiple Class Plan for Class A, Class B and Class C Shares_

               19.  Powers of Attorney.*
    

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

_ Filed herewith.

* Previously  filed.  Incorporated by reference from the exhibits filed with the
Registration  Statement,  as  amended,  of the  Registrant  (File Nos.  2-20795;
811-5516).


Item 25. Persons Controlled By or Under Common Control With Registrant

   
     The Pioneer Group, Inc., a Delaware corporation  ("PGI"),  owns 100% of the
outstanding  capital  stock of  Pioneering  Management  Corporation,  a Delaware
corporation ("PMC"),  Pioneering Services  Corporation ("PSC"),  Pioneer Capital
Corporation ("PCC"), Pioneer Fonds Marketing GmbH ("GmbH"),  Pioneer Associates,
Inc.,  Pioneer  International  Corporation,  Pioneer Plans Corporation  ("PPC"),
Pioneer Goldfields Limited ("PGL"), and Pioneer Investments Corporation ("PIC"),
all Massachusetts  corporations.  PMC owns 100% of the outstanding 
    


                                      C-2
<PAGE>

   
capital  stock of Pioneer  Funds  Distributor,  Inc.  ("PFD"),  a  Massachusetts
corporation.  PGI also owns 100% of the  outstanding  capital  stock of  Pioneer
Metals and Technology,  Inc. ("PMT"), a Delaware corporation,  and Pioneer First
Polish Trust Fund Joint Stock Company ("First  Polish"),  a Polish  corporation.
PGI owns 90% of the outstanding shares of Teberebie  Goldfields Limited ("TGL").
Pioneer  Fund,  Pioneer II,  Pioneer Bond Fund,  Pioneer  Europe  Fund,  Pioneer
Intermediate  Tax-Free Fund, Pioneer Growth Trust, Pioneer  International Growth
Fund, Pioneer Short-Term Income Trust,  Pioneer Tax-Free State Series Trust, and
the Registrant  (each of the foregoing,  a Massachusetts  business  trust),  and
Pioneer  Interest  Shares,  Inc. (a Nebraska  corporation)  and Pioneer Emerging
Markets Fund,  Pioneer Growth Shares,  Pioneer Income Fund,  Pioneer India Fund,
Pioneer Tax-Free Income Fund,  Pioneer Mid-Cap Fund, Pioneer Money Market Trust,
Pioneer Real Estate  Shares,  Pioneer  Small  Company Fund and Pioneer  Variable
Contracts  Trust  (each of the  foregoing,  a Delaware  business  trust) are all
parties  to  management  contracts  with PMC.  PCC owns 100% of the  outstanding
capital stock of Pioneer SBIC Corp.  ("SBIC").  SBIC is the sole general partner
of Pioneer Ventures Limited  Partnership,  a Massachusetts  limited partnership.
John F. Cogan, Jr. owns  approximately 15% of the outstanding shares of PGI. Mr.
Cogan is Chairman of the Board,  President and Trustee of the  Registrant and of
each of the Pioneer mutual funds;  Director and President of PGI;  President and
Director of PPC, PIC, Pioneer International Corporation and PMT; Director of PCC
and PSC;  Chairman  of the Board and  Director  of PMC,  PFD and TGL;  Chairman,
President  and  Director  of PGL;  Chairman  of the  Supervisory  Board of GmbH;
Chairman and Member of Supervisory Board of First Polish; and Partner,  Hale and
Dorr.
    

Item 26. Number of Holders of Securities

     The following table sets forth the approximate  number of record holders of
each class of securities of the Registrant as of March 31, 1996:

   
                              Class A     Class B      Class C

Number of Record Holders:     10,211        497          7
    

                                      C-3
<PAGE>

Item 27. Indemnification

         Except for the Amended and Restated Declaration of Trust dated December
7, 1993 establishing the Registrant as a Trust under Massachusetts law, there is
no  contract,   arrangement  or  statute  under  which  any  director,  officer,
underwriter or affiliated  person of the  Registrant is insured or  indemnified.
The Declaration of Trust provides that no Trustee or officer will be indemnified
against any  liability  of which the  Registrant  would  otherwise be subject by
reason of or for willful  misfeasance,  bad faith,  gross negligence or reckless
disregard of such person's duties.

         Insofar as  indemnification  for liability arising under the Securities
Act of 1933, as amended (the "Act"), may be available to directors, officers and
controlling persons of the Registrant pursuant to the foregoing  provisions,  or
otherwise, the Registrant has been advised that in the opinion of the Securities
and  Exchange  Commission  such  indemnification  is  against  public  policy as
expressed in the Act and is, therefore, unenforceable. In the event that a claim
for  indemnification  against  such  liabilities  (other than the payment of the
Registrant of expenses  incurred or paid by a director,  officer or  controlling
person of the  Registrant  in the  successful  defense  of any  action,  suit or
proceeding)  is  asserted by such  director,  officer or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.


Item 28. Business and other Connections of Investment Adviser

         All of the information  required by this item is set forth in the Forms
ADV, as amended, of Pioneering Management Corporation. The following sections of
such Forms ADV are incorporated herein by reference:

         (a) Items 1 and 2 of Part 2;

         (b) Section 6, Business Background, of each Schedule D.


Item 29. Principal Underwriter

         (a) See Item 25 above.

         (b) Directors and Officers of PFD:


                                      C-4
<PAGE>




                           Positions and Offices        Positions and Offices
Name                       with Underwriter             with Registrant

   
John F. Cogan, Jr.         Director and Chairman        Chairman of the Board,
                                                        Chief Executive
                                                        Officer and Trustee
    

Robert L. Butler           Director and President       None

David D. Tripple           Director                     Executive Vice
                                                        President and Trustee

Steven M. Graziano         Senior Vice President        None

Stephen W. Long            Senior Vice President        None

   
Elizabeth Bennett          Vice President               None
    

John W. Drachman           Vice President               None

   
Mary Kleeman               Vice President               None
    

Barry G. Knight            Vice President               None

William A. Misata          Vice President               None

Anne W. Patenaude          Vice President               None
       
Gail A. Smyth              Vice President               None

Constance D. Spiros        Vice President               None

   
Marcy Supovitz             Vice President               None
    

Steven R. Berke            Assistant                    None
                            Vice President

Mary Sue Hoban             Assistant                    None
                            Vice President

William H. Keough          Treasurer                    Treasurer

Roy P. Rossi               Assistant Treasurer          None

Joseph P. Barri            Clerk                        Secretary

   
Robert P. Nault            Assistant Clerk              Assistant Secretary
    


                                      C-5
<PAGE>

                  (c) Not applicable.


Item 30. Location of Accounts and Records

         The accounts and records are maintained at the  Registrant's  office at
60 State Street, Boston, Massachusetts; contact the Treasurer.


Item 31. Management Services

         The  Registrant  is  not a  party  to  any  management-related  service
contract,  except as described in the Prospectus and the Statement of Additional
Information.

Item 32. Undertakings

                  (a)  Not applicable.

                  (b)  Not applicable.

                  (c) The Registrant hereby undertakes to deliver or cause to be
delivered with the Prospectus,  to each person to whom the Prospectus is sent or
given, a copy of the Registrant's  report to shareholders  furnished pursuant to
and meeting the requirements of Rule 30d-1 from which the specified  information
is incorporated by reference,  unless such person  currently holds securities of
the Registrant  and otherwise has received a copy of such report,  in which case
the  Registrant  shall state in the  Prospectus  that it will  furnish,  without
charge,  a copy of such report on request,  and the name,  address and telephone
number of the person to whom such a request should be directed.


                                      C-6
<PAGE>

                                   SIGNATURES


   
         Pursuant  to the  requirements  of the  Securities  Act of 1933 and the
Investment   Company  Act  of  1940,   the   Registrant  has  duly  caused  this
Post-Effective  Amendment No. 10 (the "Amendment") to its Registration Statement
(which  meets all the  requirements  for  effectiveness  pursuant to Rule 485(b)
under the Securities Act of 1933) to be signed on its behalf by the undersigned,
thereunto  duly   authorized,   in  the  City  of  Boston  and  Commonwealth  of
Massachusetts, on the 16th day of April, 1996.
    

                                             PIONEER AMERICA INCOME TRUST



   
                                             /s/ John F. Cogan, Jr.
                                             John F. Cogan, Jr.
                                             President
    

         Pursuant  to the  requirements  of the  Securities  Act of  1933,  this
Amendment has been signed below by the following  persons in the  capacities and
on the dates indicated:


         Title and Signature                                 Date


Principal Executive Officer:               )
                                           )
                                           )
John F. Cogan, Jr.*                        )
John F. Cogan, Jr., President              )
                                           )
                                           )
Principal Financial and                    )
Accounting Officer:                        )
                                           )
                                           )
William H. Keough*                         )
William H. Keough, Treasurer               )
                                           )
                                           )
Trustees:                                  )
                                           )
John F. Cogan, Jr.*                        )
John F. Cogan, Jr.                         )
                                           )
                                           )


                                      C-7
<PAGE>

Richard H. Egdahl, M.D.*                   )
Richard H. Egdahl, M.D.                    )
                                           )
                                           )
Margaret B. W. Graham*                     )
Margaret B. W. Graham                      )
                                           )
                                           )
John W. Kendrick*                          )
John W. Kendrick                           )
                                           )
                                           )
Marguerite A. Piret*                       )
Marguerite A. Piret                        )
                                           )
                                           )
David D. Tripple*                          )
David D. Tripple                           )
                                           )
                                           )
Stephen K. West*                           )
Stephen K. West                            )
                                           )
                                           )
John Winthrop*                             )
John Winthrop                              )

- ---------


   
*  By:/s/ Joseph P. Barri                            April 16, 1996
      ---------------------
      Joseph P. Barri
      Attorney-in-fact
    



                                      C-8
<PAGE>

                                  Exhibit Index

Exhibit
Number            Document Title

       
1.2               Establishment and Designation of Classes

   
1.3               Establishment and Designation of Class C Shares

2.                By-Laws

6.1               Underwriting Agreement with Pioneer Funds Distributor, Inc.

6.2               Form of Dealer Sales Agreement
    

10.               Opinion and Consent of Counsel

11.               Consent of Independent Public Accountants

   
15.3              Class C Shares Distribution Plan
    

17.               Financial Data Schedules

   
18.1              Multiple Class Plan for Class A and
                  Class B Shares

18.2              Multiple Class Plan for Class A,
                  Class B and Class C Shares
    










                                      C-9


                          PIONEER AMERICA INCOME TRUST


                          Establishment and Designation
                                       of
                Class A Shares, Class B Shares and Class C Shares
                            of beneficial Interest of
                          Pioneer America Income Trust



     The undersigned, being a majority of the Trustees of Pioneer America Income
Trust, a Massachusetts business trust (the "Trust"),  acting pursuant to Article
V, Section 5.1 and 5.11 of the Amended and Restated  Declaration  of Trust dated
December 7, 1993 of the Trust (the  "Declaration"),  do hereby divide the shares
of  beneficial  interest of the Trust (the  "Shares") to create three classes of
Shares of the Trust as follows:

     1.       The three classes of Shares  established  and designed  hereby are
              "Class  A  Shares,"   "Class  B  Shares"  and  "Class  C  Shares,"
              respectively.

     2.       Class A Shares,  Class B Shares  and Class C Shares  shall each be
              entitled to all of the rights and  preferences  accorded to Shares
              under the Declaration.

     3.       The purchase  price of Class A Shares,  Class B Shares and Class C
              Shares,  the method of determining  the net asset value of Class A
              Shares, Class B Shares and Class C Shares and the relative divided
              rights of  holders  of Class A Shares,  Class B Shares and Class C
              Shares  shall  be  established  by the  Trustees  of the  Trust in
              accordance with the provisions of the Declaration and shall be set
              forth in the Trust's Registration Statement on Form N-1A under the
              Securities Act of 1933 and/or the Investment  Company Act of 1940,
              as amended and as in effect at the time of issuing such Shares.

     4.       The Trustees, acting in their sole discretion,  may determine that
              any Shares of the Trust issued are Class A Shares, Class B Shares,
              Class  C  Shares  or  Shares  of any  other  class  of  the  Trust
              hereinafter established and designated by the Trustees.



<PAGE>


     IN WITNESS WHEREOF,  the undersigned have executed this instrument this 7th
day of November, 1995.




/s/John F. Cogan, Jr.                       /s/Marguerite A. Piret
John F. Cogan, Jr.                          Marguerite A. Piret
as Trustee and not individually             as Trustee and not individually
975 Memorial Drive, #802                    162 Washington Street
Cambridge, MA  02138                        Belmont, MA  02178



/s/Richard H. Egdahl                        /s/David D. Tripple
Richard H. Egdahl, M.D.                     David D. Tripple
as Trustee and not individually             as Trustee and not individually
Health Policy Institute                     6 Woodbine Road
53 Bay State Road                           Belmont, MA  02178
Boston, MA  02215


/s/Margaret B.W. Graham                     /s/Stephen K. West
Margaret B.W. Graham                        Stephen K. West, Esq.
as Trustee and not individually             as Trustee and not individually
The Keep                                    Sullivan & Cromwell
P.O. Box 110                                125 Broad Street
Little Deer Isle, ME 04650                  New York, NY  10004


/s/John W. Kendrick                         /s/John Winthrop
John W. Kendrick                            John Winthrop
as Trustee and not individually             as Trustee and not individually
6363 Waterway Drive                         One North Adgers Wharf
Falls Church, VA 22044                      Charleston, SC  29401











                          AMENDED AND RESTATED BY-LAWS

                                       OF

                          PIONEER AMERICA INCOME TRUST










                                                        Adopted December 5, 1994



<PAGE>

                                Table of Contents


                                                                          Page

ARTICLE I             OFFICES

     1        Principal Office.............................................1
     2        Other Offices................................................1

ARTICLE II    OFFICERS AND THEIR ELECTION

     1        Officers.....................................................1
     2        Election of Officers.........................................1
     3        Resignations and Removals....................................1
     4        Vacancies....................................................2

ARTICLE III   POWERS AND DUTIES OF OFFICERS AND TRUSTEES

     1        Trustees.....................................................2
     2        Executive and Other Committees...............................2
     3        Chairman of the Trustees.....................................2
     4        President....................................................2
     5        Treasurer....................................................2
     6        Secretary....................................................3
     7        Vice Presidents..............................................3
     8        Assistant Treasurer..........................................3
     9  Compensation of Officers and Trustees and
              Members of the Advisory Board................................3

ARTICLE IV    SHAREHOLDERS' MEETINGS
     1        General .....................................................3
     2        Record Date for Meetings and Other Purposes..................3
     3        Notices .....................................................4
     4        Place of Meeting.............................................4
     5        Quorum  .....................................................4
     6        Required Vote................................................4
     7        Conduct of Shareholders' Meeting.............................4
     8        Order of Business............................................5
     9        Proxies .....................................................5
     10       Abstentions and Broker Non-Votes.............................5
     11       Special Meetings.............................................6
     12       Action Without Meeting.......................................6

ARTICLE V             TRUSTEES' MEETINGS

     1        Meetings.....................................................6
     2        Quorum  .....................................................6
     3        Notices .....................................................6


                                      -i-
<PAGE>

     4        Place of Meeting.............................................7
     5        Special Action...............................................7
     6        Action by Consent............................................7

ARTICLE VI    SHARES OF BENEFICIAL INTEREST

     1        Beneficial Interest..........................................7
     2        Transfers; Share Certificates................................7


ARTICLE VII   INSPECTION OF BOOKS..........................................8

ARTICLE VIII  CUSTODIAN....................................................8

ARTICLE IX    MISCELLANEOUS PROVISIONS

     1        Seal    .....................................................11
     2        Fiscal Year..................................................11
     3        Reports to Shareholders......................................11
     4        Voting of Securities.........................................11
     5        Evidence of Authority........................................11
     6        Declaration of Trust.........................................11
     7        Severability.................................................11
     8        Pronouns.....................................................11




                                      -ii-
<PAGE>

                          AMENDED AND RESTATED BY-LAWS

                                       of

                          PIONEER AMERICA INCOME TRUST

     All  capitalized  terms not  otherwise  defined  shall have the  respective
meanings given them in the Amended and Restated  Declaration of Trust of Pioneer
America Income Trust (formerly Pioneer U.S.  Government Trust) dated December 7,
1993.


                                    ARTICLE I

SECTION 1. Principal Office. Until changed by the Trustees, the principal office
of the Trust shall be in Boston, Massachusetts.

SECTION  2. Other  Offices.  The Trust may have  offices  in such  other  places
without as well as within The  Commonwealth of Massachusetts as the Trustees may
from time to time determine.


                                   ARTICLE II

                           Officers and Their Election

SECTION 1. Officers. The officers of the Trust shall be a Chairman, a President,
a  Treasurer,  a Secretary  and such other  officers  with such other  titles as
provided for herein or as the Trustees may from time to time elect. It shall not
be  necessary  for any Trustee or other  officer to be a holder of Shares in the
Trust.

SECTION 2. Election of Officers.  The  Treasurer  and Secretary  shall be chosen
annually by the Trustees. The Chairman and President shall be chosen annually by
and from the Trustees.

     Two or more  offices  may be held by a single  person  except the office of
Secretary. The officers shall hold office until their successors are duly chosen
and qualified.

SECTION 3.  Resignations  and  Removals.  Any officer of the Trust may resign by
filing a written resignation with the President,  the Trustees or the Secretary,
which shall take effect upon such filing  unless it is specified to be effective
at some other time or upon the happening of some other event. Any officer may be
removed  at any  time,  with or  without  cause,  by vote of a  majority  of the
Trustees.
<PAGE>

SECTION 4. Vacancies.  The Trustees may fill any vacancy occurring in any office
for any reason and may, in their  discretion,  leave unfilled for such period as
they  may  determine  any  offices  other  than  those of  Chairman,  President,
Treasurer  and  Secretary.  Each such  successor  shall  hold  office  until his
successor is duly chosen and qualified.


                                   ARTICLE III

                   Powers and Duties of Officers and Trustees

SECTION 1.  Trustees.  The business and affairs of the Trust shall be managed by
the  Trustees,  and they shall have all powers  necessary and desirable to fully
carry out that responsibility.

SECTION 2. Executive and Other Committees. The Trustees may elect from their own
number an  Executive  Committee  to consist of not less than three nor more than
five  members,  which  shall have the power and duty to conduct  the current and
ordinary business of the Trust, and such other powers and duties as the Trustees
may from time to time  delegate to such  Committee.  The Trustees may also elect
from their own number other  Committees from time to time, the number  composing
such Committees and the powers  conferred upon the same to be determined by vote
of the Trustees.

SECTION 3. Chairman of the Trustees.  The Chairman shall preside at all meetings
of the  Trustees and he may be the chief  executive,  financial  and  accounting
officer of the Trust.  The  Chairman  may also  perform such other duties as the
Trustees may from time to time designate.

SECTION 4. President.  The President shall be the chief operating officer of the
Trust and,  subject to the  Trustees,  shall have general  supervision  over the
business  and  policies of the Trust.  The  President  shall have full power and
authority to bind the Trust and in connection  therewith may execute and deliver
in the name and on  behalf of the  Trust  any and all  agreements,  instruments,
notes and writings of any nature that he may consider  necessary or  appropriate
in connection with the management of the Trust. The President shall perform such
duties  additional to all of the foregoing as the Trustees may from time to time
designate.

SECTION  5.  Treasurer.  The  Treasurer  may  be  the  principal  financial  and
accounting  officer of the Trust.  He shall deliver all funds and  securities of
the Trust which may come into his hands to such bank(s) or trust  compan(ies) as
the Trustees shall employ as  Custodian(s) in accordance with Section 3.6 of the
Declaration of Trust and these By-Laws. He shall have the custody of the seal of
the Trust He shall make annual reports in writing 


                                      -2-
<PAGE>

of the business  conditions of the Trust,  which reports shall be preserved upon
its records,  and he shall furnish such other reports regarding its business and
condition as the Trustees may from time to time  require.  The  Treasurer  shall
perform such duties  additional  to all of the  foregoing as the Trustees or the
President may from time to time designate.

SECTION 6.  Secretary.  The Secretary shall record in books kept for the purpose
all  votes  and  proceedings  of the  Trustees  and the  shareholders  at  their
respective meetings.

     The Secretary shall perform such duties and possess such powers  additional
to the  foregoing  as the  Trustees  or the  President  may  from  time  to time
designate.

SECTION 7. Vice Presidents.  Each Vice President of the Trust shall perform such
duties and possess such powers as the Trustees or the President may from time to
time designate. In the event of the absence,  inability or refusal to act of the
President,  the Vice  President  (or if there  shall be more than one,  the Vice
Presidents in the order  determined by the Trustees) shall perform the duties of
the President and when so performing shall have all the powers of and be subject
to all the restrictions upon the President.

SECTION 8.  Assistant  Treasurer.  The  Assistant  Treasurer  of the Trust shall
perform such duties and possess such powers as the  Trustees,  the  President or
the Treasurer may from time to time designate.

SECTION 9.  Compensation  of Officers and  Trustees.  Subject to any  applicable
provisions of the  Declaration of Trust,  the  compensation  of the officers and
Trustees  shall  be  fixed  from to  time by the  Trustees  or,  in the  case of
officers,  by any  Committee or officer upon whom such power may be conferred by
Trustees. No officer shall be prevented from receiving such compensation as such
officer by reason of the fact that he is also a Trustee.


                                   ARTICLE IV

                             Shareholders' Meetings

SECTION 1. General. Voting powers and meetings of Shareholders shall be governed
by applicable  provisions of law, the  Declaration  of Trust and as  hereinafter
provided by these By-Laws.

SECTION 2.  Record  Date for  Meetings  and Other  Purposes.  For the purpose of
determining  the  Shareholders  who are entitled to notice 


                                      -3-
<PAGE>

of and to vote at any meeting, or to participate in any distribution, or for the
purpose  of any other  action,  the  Trustees  may from  time to time  close the
transfer books for such period,  not exceeding thirty (30) days, as the Trustees
may determine; or without closing the transfer books the Trustees may fix a date
not more than sixty (60) days prior to the date of any  meeting of  Shareholders
or  distribution or other action as a record date for the  determination  of the
persons to be treated as Shareholders of record for such purposes.

SECTION 3. Notices.  Except, as provided in the Declaration of Trust, notices of
any  special  meeting of the  Shareholders  shall be given by the  Secretary  by
delivering or mailing,  postage prepaid, to each Shareholder entitled to vote at
said meeting,  a written or printed  notification of such meeting,  at least ten
days before the meeting,  to such address as may be registered with the Trust by
the Shareholder.

SECTION 4. Place of Meeting.  All special meetings of the Shareholders  shall be
held at the principal place of business of the Trust in Boston, Massachusetts or
at such other place in the United States as the Trustees may designate.

SECTION 5.  Quorum.  The presence in person or by proxy of the holders of record
of a majority of the shares of beneficial  interest  issued and  outstanding and
entitled  to vote  ("Outstanding  Shares")  shall  constitute  a quorum  for the
transaction  of any  business  at all  meetings  of the  Shareholders  except as
otherwise  provided by law, the  Declaration  of Trust or these By- Laws. In the
absence of the required  quorum no business may be  transacted,  except that the
holders of a majority of the Outstanding Shares present in person or by proxy at
the meeting may adjourn the meeting from time to time without  notice other than
announcement  thereat except as otherwise  required by these By-Laws,  until the
holders of the requisite amount of Shares  outstanding  shall be so present.  At
any such  adjourned  meeting at which the  required  quorum may be present,  any
business may be  transacted  which might have been  transacted at the meeting as
originally notified.

SECTION  6.  Required   Vote.  On  any  matter   brought  before  a  meeting  of
Shareholders,  a vote of a majority of the Outstanding  Shares present in person
or by proxy at the  meeting  is  required  to  approve  such  matter,  except as
otherwise  required by law, the  Declaration of Trust or any other  provision of
the By-Laws.

SECTION  7.  Conduct  of  Shareholders'   Meetings.   At  each  meeting  of  the
Shareholders,  the Chairman of the Board of Trustees (if one has been designated
by the Board of Trustees), or if the Chairman of the Board of Trustees is absent
or unable to act, the President, or if the President is absent or unable to act,
a Vice


                                      -4-
<PAGE>

President,  or if none of  them  are  present  or able to act a  chairman  to be
elected at the meeting,  shall act as chairman of the meeting.  The Secretary of
the  Trust,  or if the  Secretary  is  absent or  unable  to act,  an  Assistant
Secretary,  or if none are present or able to act,  any person  appointed by the
chairman  of the  meeting,  shall act as  secretary  of the meeting and keep the
minutes thereof.

SECTION 8. Order of  Business.  The order of  business  at all  meetings  of the
Shareholders shall be as determined by the chairman of the meeting.

SECTION 9. Proxies.  At any meeting of  Shareholders,  any holder of Outstanding
Shares entitled to vote thereat may vote by proxy,  provided that no proxy shall
be voted at any  meeting  unless  it shall  have  been  placed  on file with the
Secretary, or with such other officer or agent of the Trust as the Secretary may
direct,  for verification prior to the time at which such vote shall be taken. A
proxy shall be deemed  signed if the  Shareholder's  name is placed on the proxy
(whether by manual  signature,  typewriting or telegraphic  transmission) by the
Shareholder or the  Shareholder's  attorney-in- fact Proxies may be solicited in
the name of one or more  Trustees  or one or more of the  officers of the Trust.
Only Shareholders of record shall be entitled to vote. Each whole Share shall be
entitled to one vote as to any matter on which it is entitled by the Declaration
of Trust to vote and  fractional  Shares  shall be entitled  to a  proportionate
fractional vote. When any Share is held jointly by several  persons,  any one of
them may vote at any meeting in person or by proxy in respect of such Share, but
if more than one of them shall be present at such meeting in person or by proxy,
and such joint owners or their proxies so present  disagree as to any vote to be
cast,  such vote shall be received in respect of such Share. A proxy  purporting
to be executed by or on behalf of a  Shareholder  shall be deemed  valid  unless
challenged  at or prior to its  exercise,  and the burden of proving  invalidity
shall  rest on the  challenger.  If the holder of any such Share is a minor or a
person of unsound mind, and subject to  guardianship or the legal control of any
other person as regards the charge or management  of such Share,  he may vote by
his guardian or such other person  appointed  or having such  control,  and such
vote may be given in person or by proxy.

SECTION 10. Abstentions and Broker Non-Votes.  Outstanding Shares represented at
a meeting in person or by proxy (including  Outstanding  Shares which abstain or
do not  vote  with  respect  to one or  more  of  any  proposals  presented  for
Shareholder  approval)  will be counted for  purposes of  determining  whether a
quorum is  present  at a meeting.  Abstentions  will be  treated as  Outstanding
Shares that are present and  entitled to vote for  purposes of  determining  the
number of Outstanding  Shares that are present and


                                      -5-
<PAGE>

entitled  to vote  with  respect  to any  particular  proposal,  but will not be
counted  as a vote in favor of such  proposal.  If a broker or  nominee  holding
Outstanding Shares in "street name" indicates on the proxy that it does not have
discretionary  authority to vote as to a particular proposal,  those Shares will
not be considered as present and entitled to vote with respect to such proposal.

SECTION 11. Special Meetings. Special meetings of the Shareholders may be called
in accordance with the provisions of the Declaration of Trust. If the Secretary,
when ordered or requested to hold a special meeting of the Shareholders, refuses
or neglects for more than two days to call such special meeting, the Trustees or
the  Shareholders  so  requesting  may, in the name of the  Secretary,  call the
meeting by giving notice thereof in the manner  required when notice is given by
the Secretary.

SECTION  12.  Action  Without  Meeting.   Any  action  which  may  be  taken  by
Shareholders may be taken without a meeting if a majority of Outstanding  Shares
(or such larger  proportion  thereof as shall be required by law) consent to the
action in writing  and the  written  consents  are filed with the records of the
meetings of  Shareholders.  Such consents shall be treated for all purposes as a
vote taken at a meeting of Shareholders.


                                    ARTICLE V

                               Trustees' Meetings

SECTION 1.  Meetings.  Meetings  of the  Trustees  shall be called  orally or in
writing by the Chairman or at his order or direction to the  Secretary or by any
two other  Trustees by written  request to the  Secretary,  and if the Secretary
when so requested  refuses or fails for more than one day to call such  meeting,
the Chairman, or such two other Trustees,  may in the name of the Secretary call
such meeting by giving due notice in the manner required when notice is given by
the Secretary.

SECTION 2. Quorum.  A majority of the Trustees shall constitute a quorum for the
transaction of business.

SECTION 3. Notices.  Except as otherwise provided,  notice of any meeting of the
Trustees  shall be given by the  Secretary to each  Trustee,  by mailing to him,
postage  prepaid,  addressed to him at his address as registered on the books of
the Trust or, if not so  registered,  at his last  known  address,  a written or
printed  notification  of such meeting at least three days before the meeting or
by  delivering  such notice to him at least two days before the  meeting,  or by
telephoning  him or by sending to him at 


                                      -6-
<PAGE>

least one day before the meeting,  by prepaid telegram,  addressed to him at his
said registered address, if any, or if he has no such registered address, at his
last known address, notice of such meeting.

SECTION 4. Place of Meeting.  All meetings of the Trustees  shall be held at the
principal place of business of the Trust in Boston, Massachusetts, or such other
place  within or without the  Commonwealth  as the person or persons  requesting
said  meeting to be called may  designate,  but any  meeting  may adjourn to any
other place.  Meetings may be held by means of a conference telephone circuit or
similar communications  equipment by means of which all persons participating in
the meeting can hear each other.

SECTION  5.  Special  Action.  When all the  Trustees  shall be  present  at any
meeting, however called, or wherever held, or shall assent to the holding of the
meeting without notice, or after the meeting shall sign a written assent thereto
on the record of such  meeting,  the acts of such  meeting  shall be valid as if
such meeting had been regularly held.

SECTION 6. Action by Consent.  Any action by the Trustees may be taken without a
meeting if a written consent thereto is signed by a majority of the Trustees and
filed with the  records  of the  Trustees'  meetings,  or by  telephone  consent
provided a majority of Trustees participate in any such telephone meeting.  Such
consent  shall be treated as a vote of the Trustees for all  purposes,  provided
however,  no such consent  shall be effective if the  Investment  Company Act of
1940  requires  that a  particular  action  be taken  only at a  meeting  of the
Trustees.


                                   ARTICLE VI

                          Shares of Beneficial Interest

SECTION 1.  Beneficial  Interest.  The beneficial  interest in the Trust and the
status of the owners  thereof  shall be  defined,  established  and  governed by
applicable provisions of law, the Declaration of Trust and as herein provided by
these By-Laws.

SECTION 2. Transfers;  Share Certificates.  (a) Shares may be transferred on the
books of the Trust by written request to the Trust or its transfer  agent,  with
such proof of authority or the authenticity of the signature as the Trust or its
transfer agent may reasonably  require.  Except as may be otherwise  required by
law,  by the  Declaration  of Trust  or by these  By-Laws,  the  Trust  shall be
entitled to treat the record holder of shares of beneficial interest as shown on
its books as the owner of such shares for all purposes, including the payment of
dividends  and


                                      -7-
<PAGE>

the right to vote with respect  thereto,  regardless of any transfer,  pledge or
other  disposition of such shares until the shares have been  transferred on the
books of the Trust in accordance with the requirements of these By-Laws.

     (b) The Trustees may  authorize the issuance of  certificates  representing
Shares  and adopt  rules  governing  the  transfer  of  Shares,  whether  or not
represented by certificates.


                                   ARTICLE VII

                               Inspection of Books

     The Trustees shall from time to time determine  whether and to what extent,
and at what times and places,  and under what  conditions  and  regulations  the
accounts  and books of the Trust or any of them shall be open to the  inspection
of the  shareholders;  and no  shareholder  shall have any right to inspect  any
account or book or document of the Trust except as conferred by law or otherwise
by the Trustees or by resolution of the shareholders.


                                  ARTICLE VIII

                                    Custodian

     The  Custodian(s)  employed  by the Trust  pursuant  to Section  3.6 of the
Declaration  of Trust shall be required to enter into a contract  with the Trust
which shall contain in substance the following provisions:

     (a) The Trust will cause all  securities and funds owned by the Trust to be
delivered or paid to the Custodian(s).

     (b) The  Custodian(s)  will  receive  and receipt for any moneys due to the
Trust and  deposit  the same in its own  banking  department  and in such  other
banking institutions,  if any, as the Custodian(s) and the Trustees may approve.
The Custodian(s) shall have the sole power to draw upon any such account.

     (c) The  Custodian(s)  shall  release and deliver  securities  owned by the
Trust in the following cases only:

     (1)  Upon the sale of such  securities  for the  account  of the  Trust and
          receipt of payment therefor;

                                      -8-
<PAGE>

     (2)  To the issuer  thereof or its agent when such  securities  are called,
          redeemed,  retired or otherwise  become payable;  provided that in any
          such case, the cash is to be delivered to the Custodian(s);

     (3)  To the issuer  thereof or its agent for transfer  into the name of the
          Trust, the Custodian(s) or a nominee of either,  or for exchange for a
          different  number  of  bonds  or  certificates  representing  the same
          aggregate  face amount or number of units;  provided  that in any such
          case the new securities are to be delivered to the Custodian(s);

     (4)  To the broker  selling  the same for  examination,  in accord with the
          "street delivery" custom;

     (5)  For   exchange  or   conversion   pursuant  to  any  plan  of  merger,
          consolidation, recapitalization, reorganization or readjustment of the
          securities of the issuer of such  securities or pursuant to provisions
          to any deposit  agreement;  provided  that, in any such case,  the new
          securities and cash, if any, are to be delivered to the Custodian(s);

     (6)  In the case of warrants,  rights, or similar securities, the surrender
          thereof in the exercise of such warrants, rights or similar securities
          or the  surrender  of interim  receipts or  temporary  securities  for
          definitive securities;

     (7)  To any  pledge by way of pledge or  hypothecation  to secure any loan;
          and

     (8)  For deposit in a system for the central handling of securities.

     (d) The  Custodian(s)  shall  pay out  moneys  of the  Trust  only upon the
purchase  of  securities  for the  account of the Trust and the  delivery in due
course  of such  securities  to the  Custodian(s),  or in  connection  with  the
conversion,  exchange or surrender of securities owned by the Trust as set forth
in (c), or for the redemption or repurchase of Shares issued by the Trust or for
the making of any  disbursements  authorized  by the  Trustees  pursuant  to the
Declaration  of Trust or these  By-laws,  or for the  payment of any  expense or
liability  incurred by the Trust;  provided that, in every case where payment is
made by the Custodian(s) in advance of receipt of the securities purchased,  the
Custodian(s)  shall be


                                      -9-
<PAGE>

absolutely  liable to the Trust for such securities to the same extent as if the
securities had been received by the Custodian(s).

     (e)  The  Custodian(s)  shall make deliveries of securities and payments of
          cash only  upon  written  instructions  signed  or  initialed  by such
          officer or  officers  or other  agent or agents of the Trust as may be
          authorized to sign or initial such  instructions  by resolution of the
          Trustees;  it being understood that the Trustees may from time to time
          authorize   a   different   person  or  persons  to  sign  or  initial
          instructions for different purposes.

     The contract  between the Trust and the  Custodian(s)  may contain any such
other  provisions  not  inconsistent  with the  provisions of Section 3.6 of the
Declaration of Trust or with these By-laws as the Trustees may approve.

     Such contract  shall be  terminable by either party upon written  notice to
the other within such time not exceeding  sixty (60) days as may be Specified in
the  contract;  provided,  however,  that upon  termination  of the  contract or
inability of the Custodian(s) to continue to serve, the Custodian(s) shall, upon
written  notice of  appointment  of another bank or trust  company as custodian,
deliver and pay over to such successor  custodian all securities and moneys held
by it for  account  of the Trust.  In such case,  the  Trustees  shall  promptly
appoint a successor custodian,  but in the event that no successor custodian can
be found having the required  qualifications  and willing to serve,  it shall be
the duty of the  Trustees to call as  promptly as possible a special  meeting of
the  Shareholders  to  determine  whether  the Trust  shall  function  without a
custodian  or shall be  liquidated.  If so  directed by vote of the holders of a
majority of the outstanding  Shares, the Custodian(s) shall deliver and pay over
all property of the Trust held by it as Specified in such vote.

     Such contract shall also provide that,  pending  appointment of a successor
custodian or a vote of the shareholders specifying some other disposition of the
funds and property, the Custodian(s) shall not deliver funds and property of the
Trust to the Trust,  but it may deliver  them to a bank or trust  company  doing
business  in  Boston,  Massachusetts,  of its  own  selection  having  aggregate
capital,  surplus and undivided profits,  as shown by its last published report,
of not less than  $2,000,000 as the property of the Trust to be held under terms
similar to those on which they were held by the retiring custodian.

     Any Sub-custodian employed by the Custodian(s) pursuant to authorization to
do so granted by the Trust  pursuant to Section 3.6 of the  Declaration of Trust
shall be  required to enter into a 


                                      -10-
<PAGE>

contract with the Custodian containing in substance the same provisions as those
described in paragraphs  (a) through (e) above,  except that any contract with a
sub-custodian   performing   its  duties  outside  the  United  States  and  its
territories and possessions, may omit or limit any of such conditions,  provided
that, any such omission or limitation shall be expressly  approved by a majority
of the Trustees of the Trust.


                                   ARTICLE IX

                            Miscellaneous Provisions

SECTION 1. Seal.  The seal of the Trust shall be  circular  in form  bearing the
inscription:

                         "PIONEER AMERICA INCOME TRUST"

                      "A MASSACHUSETTS BUSINESS TRUST 1988"

SECTION 2.  Fiscal  year.  The fiscal  year of the trust  shall be the period of
twelve  months  ending on the last day of December in each calendar year or such
other date as the board of trustees may determine.

SECTION 3. Reports to  Shareholders.  The Trustees shall at least semi- annually
submit to the shareholders a written financial report of the transactions of the
Trust including financial  statements which shall at least annually be certified
by independent public accountants.

SECTION 4. Voting of Securities. Except as the Trustees may otherwise designate,
the  President  or  Treasurer  may waive  notice of, and act as, or appoint  any
person or persons to act as,  proxy or  attorney-in-fact  for the Trust (with or
without power of substitution) at any meeting of stockholders or shareholders of
any  corporation or other  organization,  the securities of which may be held by
the Trust.

SECTION 5.  Evidence of Authority.  A certificate  by the Secretary or assistant
Secretary, or a temporary Secretary, as to any action taken by the shareholders,
Trustees,  any committee or any officer or  representative of the Trust shall as
to all persons who rely on the certificate in good faith be conclusive  evidence
of such action.

SECTION  6.  Declaration  of  Trust.  All  references  in these  By-Laws  to the
Declaration  of Trust  shall be  deemed  to refer  to the  Amended  and  Restate
Declaration  of Trust of the trust  dated  December  7, 1993,  as amended and in
effect form time to time.

                                      -11-
<PAGE>

SECTION 7.  Severability.  Any determination that any provision of these By-Laws
is for any  reason  inapplicable,  illegal  or  ineffective  shall not affect or
invalidate any other provision of these By-Laws or the Declaration of Trust.

SECTION 8. Pronouns. All pronouns used in these By-Laws shall be deemed to refer
to the masculine, feminine or neuter, singular or plural, as the identity of the
person or persons may require.


















                                      -12-



                                                                     EXHIBIT 6.1



                             UNDERWRITING AGREEMENT


     THIS  UNDERWRITING  AGREEMENT,  dated  this  10th day of July,  1990 by and
between Pioneer U.S. Government Trust ("Pioneer") and Pioneer Funds Distributor,
Inc. (the "Underwriter").

                               W I T N E S S E T H

     WHEREAS,  Pioneer, a Massachusetts business trust, is registered as an open
end, diversified, management investment company under the Investment Company Act
of 1940,  as amended (the "1940 Act"),  and has filed a  registration  statement
(the "Registration  Statement") with the Securities and Exchange Commission (the
"Commission") for the purpose of registering  shares of beneficial  interest for
public offering under the Securities Act of 1933, as amended;

     WHEREAS,  the  Underwriter,  a corporation  organized under the laws of the
Commonwealth  of  Massachusetts  in 1989,  engages in the  purchase  and sale of
securities both as a broker and dealer and is registered as a broker-dealer with
the Commission  and is a member in good standing of the National  Association of
Securities Dealers, Inc. (the "NASD");

     WHEREAS,  the  parties  hereto  deem  it  mutually  advantageous  that  the
Underwriter should act as Principal Underwriter, as defined in the 1940 Act, for
the sale to the public of the shares of  beneficial  interest of the  securities
portfolio of each series of Pioneer which the Trustees may  establish  from time
to time (individually, a "Portfolio and collectively, the Portfolios"); and

     WHEREAS,  the parties hereto have executed an Underwriting  Agreement dated
March  30,  1990,  and wish by this  Agreement  to amend  and  supersede  in its
entirety such prior Agreement.

     NOW,  THEREFORE,  in consideration of the mutual covenants and benefits set
forth herein, Pioneer and the Underwriter do hereby agree as follows:

     1.  Pioneer does hereby  grant to the  Underwriter  the right and option to
purchase shares of beneficial  interest of a Portfolio of Pioneer (the "Shares")
for  sale  to   investors   either   directly  or   indirectly   through   other
broker-dealers. The Underwriter is not required to purchase any specified number
of 

<PAGE>

Shares, but will purchase from Pioneer only a sufficient number of Shares as may
be  necessary to fill  unconditional  orders  received  from time to time by the
Underwriter from investors and dealers.

     2. The  Underwriter  shall offer Shares to the public at an offering  price
based upon the net asset value of the Shares,  to be  calculated as described in
the Registration Statement,  including the Prospectus, filed with the Commission
and in effect at the time of the offering, plus sales charges as approved by the
Underwriter  and the  Trustees of Pioneer and as further  outlined in  Pioneer's
Prospectus.  The offering  price shall be subject to any provisions set forth in
the  Prospectus  from  time to time with  respect  thereto,  including,  without
limitation,  rights of accumulation,  letters of intention,  exchangeability  of
shares,  reinstatement privileges,  net asset value purchases by certain persons
and reinvestments of dividends and capital gain distributions.

     3. In the  case of all  Shares  sold to  investors  through  other  broker-
dealers,  a portion  of  applicable  sales  charges  will be  reallowed  to such
broker-dealers  who are members of the NASD or, in the case of certain  sales by
banks or certain sales to foreign  nationals,  to brokers or dealers exempt from
registration  with the Commission.  The concession  reallowed to  broker-dealers
shall be set forth in a written sales  agreement and shall be generally the same
for broker-dealers providing comparable levels of sales and service.

     4. This  Agreement  may be  terminated  by either  party upon  sixty  days'
written notice.

     5. This Agreement shall  terminate on any  anniversary  hereof if its terms
and renewal have not been approved by a majority vote of the Trustees of Pioneer
voting in person,  including a majority of its Trustees who are not  "interested
persons" of the Trust and who have no direct or indirect  financial  interest in
the operation of the  Underwriting  Agreement (the "Qualified  Trustees"),  at a
meeting of  Trustees  called for the  purpose of voting on such  approval.  This
Agreement may also be terminated at any time, without payment of any penalty, by
Pioneer on 60 days' written  notice to the  Underwriter,  or by the  Underwriter
upon similar notice to Pioneer. This Agreement may also be terminated by a party
upon  five (5) days  written  notice to the  other  party in the event  that the
Commission  has issued an order or obtained an  injunction  or other court order
suspending  effectiveness of the Registration Statement covering these shares of
Pioneer. Finally, this Agreement may also be terminated by Pioneer upon five (5)
days written notice to the Underwriter  provided either of the following  events
has  occurred:  (i) the NASD has  expelled  the  


                                      -2-
<PAGE>

Underwriter  or  suspended  its  membership  in that  organization;  or (ii) the
qualification,  registration, license or right of the Underwriter to sell shares
in a particular  state has been suspended or cancelled in a state in which sales
of the shares of Pioneer during the most recent 12 month period  exceeded 10% of
all shares of Pioneer sold by the Underwriter during such period.

     6. The  compensation  for the  services of the  Underwriter  as a principal
underwriter  under  this  Agreement  shall be (i) that part of the sales  charge
which is retained by the Underwriter  after allowance of discounts to dealers as
set forth in the Registration  Statement,  including the Prospectus,  filed with
the Commission and in effect at the time of the offering,  as amended,  and (ii)
those amounts payable to the Underwriter as reimbursement  of expenses  pursuant
to any distribution  plan for Pioneer which may be in effect.  Nothing contained
herein shall relieve Pioneer of any obligation under its management  contract or
any other contract with any affiliate of the Underwriter.

     7. The parties to this Agreement acknowledge and agree that all liabilities
arising  hereunder,  whether  direct  or  indirect,  of any  nature  whatsoever,
including  without  limitation,  liabilities  arising  in  connection  with  any
agreement of Pioneer of its Trustees as set forth herein to indemnify  any party
to this  Agreement or any other  person,  if any,  shall be satisfied out of the
assets of Pioneer and that no Trustee, officer or holder of shares of beneficial
interest  of  Pioneer  shall  be  personally  liable  for  any of the  foregoing
liabilities. Pioneer's Declaration of Trust, as amended from time to time, is on
file in the Office of Secretary of State of The  Commonwealth of  Massachusetts.
The Declaration of Trust describes in detail the respective responsibilities and
limitations  on liability of the  Trustees,  officers,  and holders of shares of
beneficial interest.

     8.  This  Agreement  shall  automatically  terminate  in the  event  of its
assignment (as that term is defined in the 1940 Act).

     9. In the event of any dispute between the parties, this Agreement shall be
construed according to the laws of The Commonwealth of Massachusetts.

     10. This  Agreement is intended to amend and  supersede in its entirety the
existing Underwriting Agreement between the parties dated March 30, 1990.

     IN WITNESS  WHEREOF,  the parties hereto have caused this  instrument to be
executed by their duly  authorized  officers and their seal to be hereto affixed
as of day and year first above written.

                                      -3-
<PAGE>

ATTEST:                                 PIONEER U.S. GOVERNMENT TRUST


/s/Joseph P. Barri                      By:/s/John F.Cogan
Joseph P. Barri                         John F.Cogan
Secretary                               President


ATTEST:                                 PIONEER FUNDS DISTRIBUTOR, INC.


/s/Joseph P. Barri                      By:/s/Robert L. Butler
Joseph P. Barri                         Robert L. Butler
Clerk                                   President















                                      -4-



                         PIONEER FUNDS DISTRIBUTOR, INC.
                                 60 State Street
                                Boston, MA 02109
                                 (617) 742-7825

                                 SALES AGREEMENT

Gentlemen:

      Pioneer Funds Distributor,  Inc. (PFD), acts as principal underwriter,  as
defined in the Investment  Company Act of 1940,  for the  registered  investment
companies  (the "Funds")  listed on Appendix A attached (as amended from time to
time by PFD.)  Acting as a  principal,  PFD  offers to sell  shares of the Funds
subject to the conditions set forth in this agreement and subsequent  amendments
thereto.

      1. Shares  purchased  from PFD for sale to the public shall be offered and
sold at the price or prices,  and on the terms and conditions,  set forth in the
currently  effective  prospectus of the Funds, as amended or  supplemented  from
time to time (the "Prospectus" or "Prospectuses"). In the sale of such shares to
the  public  you shall act as dealer  for your own  account or as agent for your
customer  and in no  transaction  shall  you have any  authority  to act or hold
yourself  out as agent for PFD,  any of the Funds,  the Funds'  Custodians,  the
Funds' Transfer  agent, or any other party,  and nothing in this agreement shall
constitute you a partner, employee or agent of ours or give you any authority to
act for PFD.  Neither  PFD nor the funds shall be liable for any of your acts or
obligations as a  broker-dealer  under this  agreement.  Nothing herein shall be
construed to prohibit your acting as agent for one or both customers in the sale
of shares by one customer to another and charging such  customer(s) a reasonable
commission.

       2. Shares  purchased  from PFD for sale to the public  shall be purchased
only to cover  orders  previously  received by you from your  customers.  Shares
purchased  for your own bona  fide  investment  shall not be  reoffered  or sold
except to the applicable Fund or to PFD. PFD also agrees to purchase shares only
for investment or to cover orders received.

       3. If you  purchase  shares  from your  customers,  you agree to pay such
customers not less than the redemption  price in effect on the date of purchase,
as defined in the prospectus of the applicable  Fund.  Sales of shares at prices
reflecting a discount, concession, commission or other reallowance shall be made
only to registered  broker-dealers which are members of the National Association
of  Securities  Dealers  Inc.  (NASD)  and who  also  have  entered  into  sales
agreements with PFD.

       4. Only unconditional  orders for a designated number of shares or dollar
amount of investment shall be accepted.  Procedures  relating to handling orders
shall be conveyed to you from time to time. All orders are subject to acceptance
or rejection by PFD in our sole discretion.

       5. If any shares sold to or through you under the terms of this agreement
are  repurchased by PFD or by the issuer or are tendered for  redemption  within
seven business days after the date of our confirmation of the original  purchase
by you, we both agree to pay to the Fund all commissions on such shares.

       6.  Sales by you to the  public  shall earn a  commission  computed  as a
percentage of the  applicable  offering price and which varies with the size and
nature of each such purchase.  The terms and conditions affecting the applicable
offering  prices  on shares  sold  with a  front-end  sales  charge ,  including
features such as combined purchase, rights of accumulation, Letters of Intention
and net asset value purchases, are described in the prospectuses.  The schedules
of commissions generally payable with respect to sales of the Funds are outlined
on Appendix A to this agreement.  Commission checks for less than $1 will not be
issued.

      PFD may, from time to time,  offer  additional  commissions  or bonuses on
sales by you or your representatives  without otherwise revising this agreement.
Any such additional  commissions or bonuses shall take effect in accordance with
the terms and conditions contained in written notification to you.

       7.  Remittance of the net amount due for shares  purchased from PFD shall
be  made  payable  to  Pioneering  Services  Corporation  (PSC)  Agent  for  the
Underwriter,  in New York or Boston funds, within three days of our confirmation
of sale to you, or within such  shorter  time as  specified  by the rules of the
NASD or of a registered clearing agent through which the transaction is settled.
Payments  made to PSC should be sent to Post Office Box 9014,  Boston,  MA 02205
(or  wired  to  an  account   designated  by  PSC),  along  with  your  transfer
instructions on the appropriate copy of our confirmation of sale to you. If such
payment is not  received by PSC, we reserve  the right to  liquidate  the shares
purchased for your account and risk.  Promptly  upon receipt of payment,  shares
sold to you shall be  deposited by PSC to an account on the books of the Fund(s)
in accordance  with your  instructions.  Certificates  will not be issued unless
specifically requested and we reserve the right to levy a charge for issuance of
certificates.

       8. You represent  that you are and, at the time of purchasing  any shares
of the Funds, will be registered as a broker-dealer  with the US. Securities and
Exchange  Commission (SEC) or are exempt from such registration;  if required to
be registered as a broker-dealer  you are a member in good standing of the NASD;
you are qualified to act as a broker-dealer  in the states or  jurisdictions  in
which you intend to offer shares of the Funds;  you will abide by all applicable
federal and state  statutes and the rules of the NASD;  and when making sales to
citizens  or  residents  of  foreign  countries,  that  you  will  abide  by all
applicable  laws and  regulations of that country.  Expulsion or suspension from
the  NASD or  revocation  or  suspension  of SEC  registration  shall  act as an
immediate cancellation of this agreement.

       9. No person is authorized to make any representations  concerning shares
of any of the Funds except those  contained  in the then current  Prospectus  or
Statement of Additional Information for such Fund. In purchasing shares from PFD
you shall rely solely on the representations  contained in such Prospectuses and
Statements of Additional Information.

      10.  Additional  copies  of  the  current   prospectuses,   Statements  of
Additional   Information  (SAI),  and  other  literature  will  be  supplied  in
reasonable quantities upon request.


<PAGE>


      11. We reserve the right in our  discretion  to suspend  sales or withdraw
the offering of shares of any Fund  entirely.  Either party hereto has the right
to cancel this agreement  upon five days' written notice to the other party.  We
reserve  the right to amend  this  agreement  at any time and you agree  that an
order to purchase  shares of any one of the Funds  placed by you after notice of
such amendment has been sent to you shall  constitute your agreement to any such
amendment.

      12. All written communications to PFD should be sent to the above address.
All written communications to you will be sent to your address listed below.

      13. This  agreement  shall  become  effective  upon  receipt by us of your
acceptance  hereof and supersedes any prior agreement between us with respect to
the sales of Shares of any of the Funds.

      14. This  agreement  shall be  construed  in  accordance  with the laws of
Massachusetts. The parties hereby agree that all disputes between us of whatever
subject matter, whether existing on the date hereof or arising hereafter,  shall
be  submitted  to  arbitration  in  accordance  with  the then  current  Code of
Arbitration Procedure of the NASD, the Uniform Arbitration Act or similar rules.
Arbitration shall take place in the city of Boston, Massachusetts.  Any decision
that shall be made in such arbitration shall be final and binding and shall have
the  same  force  and  effect  as a  judgment  made  in  a  court  of  competent
jurisdiction.

      15. You appoint the transfer  agent for each Fund as your agent to execute
the purchase  transactions  of Shares of such Fund in accordance  with the terms
and provisions of any account,  program,  plan or service established or used by
your  customers and to confirm each  purchase to your  customers on your behalf,
except as modified in writing by the transfer agent, and you guarantee to us and
the Fund the legal capacity of your customers so purchasing  such Shares and any
other person in whose name the Shares are to be registered.

                                          PIONEER FUNDS DISTRIBUTOR, INC.
Date:           ,

                                          By:__________________________________
                                             William A. Misata
                                             Vice President


The undersigned hereby accepts the offer set forth in above letter.

By:__________________________________________________


Title:________________________________________________



                      RETAIN ONE COPY AND RETURN THE OTHER

<PAGE>
                                   APPENDIX A

                                     CLASS A

                                   Schedule 1

<TABLE>
<CAPTION>
<S>                                    <C>                                 <C>
Pioneer Fund                           Pioneer Mid-Cap Fund*               Pioneer Equity-Income Fund
Pioneer II                             Pioneer Gold Shares                 Pioneer Growth Shares
Pioneer International Growth Fund      Pioneer Europe Fund                 Pioneer Real Estate Shares
Pioneer Capital Growth Fund            Pioneer Emerging Markets Fund       Pioneer Small Company Fund
Pioneer India Fund

                                       Sales Charge
                                       as % of Public                      Broker/Dealer
Purchase Amount                        Offering Price                      Commission
Less than  $ 50,000..........              5.75                                 5.00%
 $ 50,000 -  99,999..........              4.50                                 4.00
  100,000 - 249,999..........              3.50                                 3.00
  250,000 - 499,999..........              2.50                                 2.00
  500,000 - 999,999..........              2.00                                 1.75
1,000,000  or more ..........              none                            a) see below


                                   Schedule 2

Pioneer Bond Fund                      Pioneer America Income Trust            Pioneer Tax-Free Income Fund
Pioneer Income Fund

                                       Sales Charge
                                       as % of Public                      Broker/Dealer
Purchase Amount                        Offering Price                      Commission
Less than  $100,000..........              4.50                                 4.00%
 $100,000 - 249,999..........              3.50                                 3.00
  250,000 -  499,000.........              2.50                                 2.00
  500,000 -  999,999.........              2.00                                 1.75
1,000,000  or more ..........              none                            a) see below


                                   Schedule 3

Pioneer Intermediate Tax-Free Fund

                                       Sales Charge
                                       as % of Public                      Broker/Dealer
Purchase Amount                        Offering Price                      Commission
Less than  $ 50,000..........              3.50                                 3.00%
 $ 50,000 -   99,999.........              3.00                                 2.50
  100,000 - 499,999..........              2.50                                 2.00
  500,000 - 999,999..........              2.00                                 1.75
1,000,000  or more ..........              none                            a) see below

                                   Schedule 4

Pioneer Short-Term Income Trust
                                       Sales Charge
                                       as % of Public                      Broker/Dealer
Purchase Amount                        Offering Price                      Commission
Less than  $ 50,000..........              2.50                                 2.00%
 $ 50,000 -   99,999.........              2.00                                 1.75
  100,000 - 249,999..........              1.50                                 1.25
  250,000 - 999,999..........              1.00                                 1.00
1,000,000  or more ..........              none                            a) see below

</TABLE>

a) Purchases of $1 million or more, and certain group plans,  are not subject to
an initial sales charge. PFD may pay a commission to broker-dealers who initiate
and are  responsible  for such purchases at the following rate: for funds listed
on schedules 1 and 2 above,  the rate is as follows:  1% on the first $5 million
invested,  .50 of 1% on the next $45 million and .25 of 1% on the excess over 50
million.  For funds  listed on  schedules 3 and 4 : .50 of 1% on purchases of $1
million to $5 million and .10 of 1% on the excess  over $5  million.  A one-year
prepaid service fee is included in this commission.  These commissions shall not
be payable 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.  A contingent  deferred  sales charge will be payable on these
investments  in the event of share  redemption  within 12 months  following  the
share purchase,  at the rate of 1% on funds in schedules 1 and 2 ; and .50 of 1%
on funds in schedules 3 and 4, 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.  For  additional  information  about  the  broker-dealer
commission   and   contingent   deferred   sales  charge   applicable  to  these
transactions, refer to the Fund's prospectus.



                             PLEASE RETAIN THIS COPY


<PAGE>




                                   Schedule 5

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

                                       No Load





                                     CLASS B

    Schedule 1                     Schedule 2                         Schedule 3
    ----------                     ----------                         ----------
<TABLE>
<CAPTION>
<S>                                <C>                                <C>
Pioneer Equity Income Fund         Pioneer Intermediate Tax-Free      Pioneer Short-Term 
Pioneer Bond Fund                       Fund                              Income Trust
Pioneer Capital Growth Fund
Pioneer Europe Fund
Pioneer Gold Share
Pioneer America Income Trust
Pioneer Emerging Markets Fund
Pioneer India Fund
Pioneer Cash Reserves Fund
Pioneer Growth Shares
Pioneer Income Fund
Pioneer Tax-Free Income Fund
Pioneer Small Company Fund
Pioneer International Growth Fund
Pioneer Real Estate Shares
Pioneer Mid-Cap Fund*
</TABLE>

Broker/Dealer
Commission               4.00%           3.00%           2.00%
- ----------

Year Since
Purchase                 CDSC%           CDSC%           CDSC%

First                     4.0             3.0             2.0
Second                    4.0             3.0             2.0
Third                     3.0             2.0             1.0
Fourth                    3.0             1.0             none
Fifth                     2.0            none             none
Sixth                     1.0            none         To A Class
Seventh                  none         To A Class
Eigth                    none
Ninth                 To A Class


a)Dealer  Commission  includes  a first year  service  fee equal to 0.25% of the
amount invested in all Class B shares.

                                     CLASS C

<TABLE>
<CAPTION>
<S>                                    <C>                               <C>
Pioneer America Income Trust           Pioneer Bond Fund                 Pioneer Capital Growth Fund
Pioneer Cash Reserves Funds            Pioneer Emerging Markets Fund     Pioneer Equity-Income Fund
Pioneer Europe Fund                    Pioneer Gold Shares               Pioneer Growth Shares
Pioneer Income Fund                    Pioneer Real Estate Shares        Pioneer India Fund
Pioneer Intermediate Tax-Free Fund     Pioneer Small Company Fund        Pioneer Tax-Free Income Fund
Pioneer International Growth Fund      Pioneer Mid-Cap Fund*
</TABLE>

a) 1% Payout to Broker
b) 1% CDSC for One Year

*formerly Pioneer Three Fund

<PAGE>
                         PIONEER FUNDS DISTRIBUTOR, INC.
                                 60 State Street
                                Boston, MA 02109
                                 (617) 742-7825


                    SUPPLEMENTAL SALES AND SERVICE AGREEMENT


You have entered into a Sales  Agreement  with Pioneer Funds  Distributor,  Inc.
("PFD")  with  respect  to the  Pioneer  mutual  funds for  which PFD  serves as
principal underwriter ("the Funds").

This agreement incorporates and supplements that agreement.  In consideration of
your sales of shares of the Funds, for providing services to shareholders of the
Funds and of the Pioneer money market funds and assisting PFD and its affiliates
in providing such services, we are authorized to pay you certain service fees as
specified  herein.  Receipt  by you of any such  service  fees is subject to the
terms and  conditions  contained  in the Funds'  prospectuses  and/or  specified
below, as may be amended from time to time.

1. You agree to cooperate  as requested  with  programs  that the Funds,  PFD or
their affiliates provide to enhance shareholder service.

2. You agree to take an active role in providing  such  shareholder  services as
processing purchase and redemption transactions and, where applicable, exchanges
and  account  transfers;  establishing  and  maintaining  shareholder  accounts;
providing  certain  information  and  assistance  with  respect  to  the  Funds;
responding  to  shareholder  inquiries  or advising us of such  inquiries  where
appropriate.

3., You agree to assign an active registered  representative to each shareholder
account  on your  and our  records  and to  reassign  accounts  when  registered
representatives  leave your firm. You also agree, with respect to accounts which
are held in  nominee  or  "street"  name,  to  provide  such  documentation  and
verification  that active  representatives  are assigned to all such accounts as
PFD may require from time to time.

4. You agree to pay to the  registered  representatives  assigned to shareholder
accounts a share of any service fees paid to you pursuant to this agreement. You
also agree to instruct your  representatives  to regularly contact  shareholders
whose accounts are assigned to them.

5. You acknowledge that service fee payments are subject to terms and conditions
set forth  herein  and in the  Funds'  prospectuses,  Statements  of  Additional
Information and Plans of Distribution  and that this agreement may be terminated
by  either  party at any time by  written  notice  to the  other.  Any  order to
purchase or sell shares  received by PFD from you  subsequent to the date of our
notification  to you of an amendment of the Agreement shall be deemed to be your
acceptance of such an amendment.

6. You  acknowledge  that your  continued  participation  in this  agreement  is
subject to your providing a level of support to PFD's  marketing and shareholder
retention  efforts  that is  deemed  acceptable  by PFD.  Factors  which  may be
considered by PFD in this respect include,  but are not limited to, the level of
shareholder  redemptions,  the level of assistance in disseminating  shareholder
communications,  reasonable access to your offices and/or representatives by PFD
wholesalers  or  other  employees  and  whether  your  compensation   system  or
"preferential  list"  unduly  discriminates  against  the sale of  shares of the
Funds.

7. Service fees will  generally  be paid  quarterly,  at the rates and under the
conditions specified on schedule A hereto.

8. All communications to PFD should be sent to the above address.  Any notice to
you shall be duly given if mailed or telegraphed to the address specified by you
below.  This agreement,  in conjunction with the Sales Agreement,  describes the
complete understanding of the parties.
This  agreement  shall  be  construed  under  the  laws of the  Commonwealth  of
Massachusetts.

Accepted:                        Execute this Agreement in duplicate 
                                 and return one ofthe duplicate originals to us.
By:___________________________
                                 By:_________________________________________
Title:________________________      William A. Misata
                                    Vice President


                      RETAIN ONE COPY AND RETURN THE OTHER


<PAGE>



                    SUPPLEMENTAL SALES AND SERVICE AGREEMENT
                      WITH PIONEER FUNDS DISTRIBUTOR, INC.

                                   SCHEDULE A

     1. Except as  specified in Section 4 below,  service fees on the  aggregate
net asset value of each account assigned to you in Pioneer Fund, Pioneer II, and
Pioneer Mid-Cap Fund** will be paid at the rate of:

      a.    0.15% annually on shares acquired prior to August 19, 1991.

      b.    0.25% annually on shares acquired on or after August 19, 1991.


     2. Except as  specified in Section 4 below,  service fees on the  aggregate
net asset value of each account assigned to you in:

Pioneer America Income Trust            Pioneer International  Growth  Fund
Pioneer  Bond  Fund                     Pioneer  Growth  Shares   
Pioneer Intermediate Tax-Free Fund      Pioneer Real Estate Shares 
Pioneer Europe Fund                     Pioneer Income Fund 
Pioneer Capital Growth Fund             Pioneer Tax-Free Income Fund 
Pioneer Equity-Income  Fund             Pioneer  Short-Term  Income Trust  
Pioneer Gold Shares                     Pioneer  India Fund
Pioneer Emerging  Markets  Fund         Pioneer  Small Company Fund*

                                will be paid at the rate of:

      a. 0.15%  annually if the shares are acquired on or after August 19, 1991,
as a result of an exchange  from Pioneer  Fund,  Pioneer II, or Pioneer  Mid-Cap
Fund** of shares owned prior to August 19, 1991.

      b.   0.25% annually on all other shares.


     3. Except as specified in Section 4 below,  service fees will be paid at an
annual rate of 0.15% of the aggregate  net asset value of each account  assigned
to you in:

                       Pioneer Cash Reserves Fund
                       Pioneer US. Government Money Fund
                       Pioneer California Double Tax-Free Fund
                       Pioneer Massachusetts Double Tax-Free Fund
                       Pioneer New York Triple Tax-Free Fund



     4. Exceptions -- Service fees will not be paid on accounts representing:

          a.   Purchases   by   you   or   your    affiliates,    employees   or
               representatives.

          b    Shares which were purchased at net asset value,  except for sales
               of the  money  market  funds or  sales  on  which  you are paid a
               commission and which are subject to the contingent deferred sales
               charge described in the funds' prospectuses.

          c.   "House"  accounts or any other accounts not assigned to an active
               registered representative(s).

          d.   Accounts  established  in  Pioneer  Bond Fund prior to January 1,
               1986.

          e.   Service  fees of less than $50 per  calendar  quarter will not be
               paid.

          f.   Pioneer  reserves  the right to reduce  the  service  fee paid on
               individual accounts of more than $10 million.

          g.   First year services  fees on shares  subject to a CDSC are at the
               rate of  0.25%  and are  prepaid  as  part of the  initial  sales
               commission.

      5.  Service  fees on shares sold with a front-end  sales  charge  normally
begin  to be  earned  as  soon  as the  transaction  settles,  unless  specified
otherwise in the fund  prospectus.  Since the  commission  on shares sold with a
CDSC  includes a prepaid one year  service fee , periodic  service  fees on such
shares are paid beginning one year following the transaction.

     6. Service Fees of 1% on class C shares will begin after first year.


*  Service fees begin accruing January 1, 1996
** Formerly Pioneer Three Fund


                                 HALE AND DORR
                                60 State Street
                          Boston, Massachusetts 02109



                                             April 22, 1996



Pioneer America Income Trust
60 State Street
Boston, MA  02109

     Re:  Post-Effective Amendment No. 10 to Registration Statement on Form N-1A
          (File No. 33-20795) (the "Registration Statement")

Ladies and Gentlemen:

     Pioneer  America  Income Trust (the  "Trust") is a  Massachusetts  business
trust  organized  under a  written  Declaration  of Trust  dated,  executed  and
delivered in Boston, Massachusetts on March 17, 1988, as amended and restated on
December 7, 1993,  as further  amended on  December  7, 1993,  June 16, 1994 and
November 7, 1995 (as so amended and restated,  the "Declaration of Trust").  The
beneficial  interests  thereunder  are  represented  by  transferable  shares of
beneficial interest, without par value.

     The Trustees of the Trust have the powers set forth in the  Declaration  of
Trust,  subject  to the  terms,  provisions  and  conditions  therein  provided.
Pursuant to Article V, Section 5.1 of the  Declaration  of Trust,  the number of
shares of beneficial  interest  authorized to be issued under the Declaration of
Trust is unlimited and the Trustees are authorized to divide the shares into one
or more series of shares and one or more classes  thereof as they deem necessary
or desirable.  Pursuant to Article V, Section 5.4 of the  Declaration  of Trust,
the  Trustees  may  issue  shares  of any  series  for such  amount  and type of
consideration,  including  cash or property,  and on such terms as they may deem
best without action or approval of the shareholders.

     We understand  that you are about to register  under the  Securities Act of
1933,  as amended,  822,556  shares of  beneficial  interest  by  Post-Effective
Amendment No. 10 to the Trust's Registration Statement.

     We have examined the Declaration of Trust, the By-laws,  resolutions of the
Board of  Trustees,  the  minutes  of the  Board  of  Trustees  relating  to the
authorization  and issuance of shares of

<PAGE>
Pioneer America Income Trust
April 22, 1996
Page 2


beneficial  interest of the Trust,  and such other  documents  as we have deemed
necessary or appropriate  for the purposes of this opinion,  including,  but not
limited to,  originals,  or copies  certified  or  otherwise  identified  to our
satisfaction,  of such documents,  Trust records and other  instruments.  In our
examination  of the above  documents,  we have  assumed the  genuineness  of all
signatures,  the authenticity of all documents submitted to us as originals, the
conformity to original  documents of all documents  submitted to us as certified
or  photostatic  copies,  the  authenticity  of the  originals  of  such  latter
documents and the legal competence of each individual executing any documents.

     For purposes of this opinion letter, we have not made an independent review
of the  laws of any  state  or  jurisdiction  other  than  The  Commonwealth  of
Massachusetts   and  express  no  opinion  with  respect  to  the  laws  of  any
jurisdiction other than the laws of The Commonwealth of Massachusetts.  Further,
we  express no opinion  as to  compliance  with any state or federal  securities
laws, including the securities laws of The Commonwealth of Massachusetts.

     Our opinion below, as it relates to the  non-assessability of the shares of
the Trust, is qualified to the extent that under Massachusetts law, shareholders
of a  Massachusetts  business trust,  such as the Trust,  may be held personally
liable for the  obligations of such Trust.  In this regard,  however,  please be
advised that the Declaration of Trust disclaims  shareholder  liability for acts
or obligations  of the Trust and provides that notice of such  disclaimer may be
given in each note, bond, contract, certificate or undertaking made or issued by
or on  behalf  of the  Trust.  Also,  the  Declaration  of  Trust  provides  for
indemnification  out  of  Trust  property  for  all  loss  and  expense  of  any
shareholder held personally  liable solely by reason of his being or having been
a shareholder  of the Trust;  provided,  however,  that no Trust property may be
used to indemnify  any  shareholder  of any series of the Trust other than Trust
property allocated or belonging to that series.

     We are of the opinion  that all  necessary  Trust  action  precedent to the
issuance of the Shares of beneficial interest of the Trust comprising the shares
covered by  Post-Effective  Amendment No. 10 to the  Registration  Statement has
been duly taken,  and that all such Shares may legally and validly be issued for
cash or  property,  and when sold will be fully paid and  non-assessable  by the
Trust  upon  receipt  by the  Trust or its  agent of  consideration  thereof  in
accordance with the terms described in

<PAGE>
Pioneer America Income Trust
April 22, 1996
Page 3


the Trust's  Declaration  of Trust and the  Registration  Statement,  subject to
compliance  with the Securities Act of 1933, the Investment  Company Act of 1940
and the applicable state laws regulating the sale of securities.

     We consent to your filing this  opinion  with the  Securities  and Exchange
Commission as an Exhibit to Post-Effective  Amendment No. 10 to the Registration
Statement.  Except as provided in this paragraph, this opinion may not be relied
upon by, or filed with, any other parties or used for any other purpose.

                                             Very truly yours,


                                             /s/Hale and Dorr

                                             HALE AND DORR




                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS



As independent  public  accountants,  we hereby consent to the use of our report
dated  February 2, 1996 included in Pioneer  America  Income Trust's 1995 Annual
Report  (and to all  references  to our firm)  included in or made a part of the
Pioneer  America Income Trust  Post-Effective  Amendment No. 10 to  Registration
Statement File No. 33-20795 and Amendment No. 11 to Registration  Statement File
No. 811-5516.



                                             /s/ARTHUR ANDERSEN LLP
                                             ARTHUR ANDERSEN LLP


Boston, Massachusetts
April 19, 1996




                        CLASS C SHARES DISTRIBUTION PLAN

                          PIONEER AMERICA INCOME TRUST


         CLASS C SHARES  DISTRIBUTION  PLAN,  dated as of  January  31,  1996 of
PIONEER AMERICA INCOME TRUST, a Massachusetts business trust (the "Trust").

                                   WITNESSETH

         WHEREAS, the Trust is engaged in business as an open-end,  diversified,
management investment company and is registered under the Investment Company Act
of 1940, as amended  (collectively  with the rules and  regulations  promulgated
thereunder, the "1940 Act");

         WHEREAS,  the Trust intends to distribute shares of beneficial interest
(the "Class C Shares") of the Trust in accordance with Rule 12b-1 promulgated by
the Securities and Exchange  Commission  under the 1940 Act ("Rule 12b-1"),  and
desires to adopt this Class C Shares distribution plan (the "Class C Plan") as a
plan of distribution pursuant to such Rule;

         WHEREAS,  the Trust  desires that Pioneer  Funds  Distributor,  Inc., a
Massachusetts corporation ("PFD"), provide certain distribution services for the
Trust's Class C Shares in connection with the Class C Plan;

         WHEREAS,  the Trust has entered into an  underwriting  agreement  (in a
form  approved by the Trust's  Board of Trustees in a manner  specified  in such
Rule 12b-1) with PFD, whereby PFD provides  facilities and personnel and renders
services to the Trust in connection with the offering and  distribution of Class
C Shares (the "Underwriting Agreement");

         WHEREAS,  the Trust also  recognizes and agrees that (a) PFD may retain
the  services  of  firms  or  individuals  to  act  as  dealers  or  wholesalers
(collectively,  the  "Dealers")  of the  Class C Shares in  connection  with the
offering of Class C Shares, (b) PFD may compensate any Dealer that sells Class C
Shares in the  manner  


<PAGE>

and at the rate or rates to be set forth in an  agreement  between  PFD and such
Dealer  and (c) PFD may make  such  payments  to the  Dealers  for  distribution
services  out of the fee  paid to PFD  hereunder,  any  deferred  sales  charges
imposed by PFD in connection with the repurchase of Class C shares,  its profits
or any other source available to it;

         WHEREAS,  the Trust  recognizes  and agrees that PFD may impose certain
deferred  sales charges in connection  with the  repurchase of Class C Shares by
the Trust,  and PFD may retain (or receive  from the Trust,  as the case may be)
all such deferred sales charges; and

         WHEREAS, the Board of Trustees of the Trust, in considering whether the
Trust  should  adopt  and  implement  this  Class C  Plan,  has  evaluated  such
information  as it deemed  necessary to an informed  determination  whether this
Class C Plan should be adopted and implemented and has considered such pertinent
factors as it deemed necessary to form the basis for a decision to use assets of
the Trust for such  purposes,  and has  determined  that  there is a  reasonable
likelihood  that the  adoption  and  implementation  of this  Class C Plan  will
benefit the Trust and its Class C shareholders;

         NOW,  THEREFORE,  the Board of Trustees of the Trust hereby adopts this
Class C Plan for the  Trust  as a plan of  distribution  of  Class C  Shares  in
accordance with Rule 12b-1, on the following terms and conditions:

         1. (a) The Trust is authorized to compensate  PFD for (1)  distribution
         services and (2) personal and account  maintenance  services  performed
         and expenses  incurred by PFD in  connection  with the Trust's  Class C
         Shares.  Such  compensation  shall be calculated  and accrued daily and
         paid  monthly or at such other  intervals  as the Board of Trustees may
         determine.

                  (b) The amount of  compensation  paid  during any one year for
         distribution  services  with respect to Class C Shares shall be .75% of
         the Trust's average daily net assets attributable to Class C Shares for
         such year.

                                      -2-
<PAGE>

                  (c)  Distribution  services  and expenses for which PFD may be
         compensated   pursuant  to  this  Plan  include,   without  limitation:
         compensation to and expenses (including allocable overhead,  travel and
         telephone  expenses) of (i) Dealers,  brokers and other dealers who are
         members  of  the  National  Association  of  Securities  Dealers,  Inc.
         ("NASD") or their officers,  sales representatives and employees,  (ii)
         PFD and any of its  affiliates  and any of their  respective  officers,
         sales  representatives  and employees,  (iii) banks and their officers,
         sales   representatives  and  employees,   who  engage  in  or  support
         distribution  of the  Trust's  Class C Shares;  printing of reports and
         prospectuses  for other than existing  shareholders;  and  preparation,
         printing  and   distribution   of  sales   literature  and  advertising
         materials.

                  (d) The amount of  compensation  paid  during any one year for
         personal and account maintenance services and expenses shall be .25% of
         the Trust's average daily net assets attributable to Class C Shares for
         such year.  As  partial  consideration  for  personal  services  and/or
         account maintenance services provided by PFD to the Class C Shares, PFD
         shall be  entitled  to be paid any fees  payable  under this clause (d)
         with  respect to Class C shares  for which no dealer of record  exists,
         where less than all  consideration  has been paid to a dealer of record
         or where qualification standards have not been met.

                  (e) Personal and account maintenance services for which PFD or
         any of its affiliates,  banks or Dealers may be compensated pursuant to
         this Plan include,  without limitation:  payments made to or on account
         of PFD or any of its affiliates,  banks,  other brokers and dealers who
         are members of the NASD, or their officers,  sales  representatives and
         employees,  who respond to  inquiries  of, and furnish  assistance  to,
         shareholders  regarding  their  ownership  of Class C  Shares  or their
         accounts or who provide similar  services not otherwise  provided by or
         on behalf of the Trust.

                                      -3-
<PAGE>

                  (f)  PFD  may  impose   certain   deferred  sales  charges  in
         connection  with the  repurchase of Class C Shares by the Trust and PFD
         may  retain  (or  receive  from the  Trust as the case may be) all such
         deferred sales charges.

                  (g)  Appropriate  adjustments  to  payments  made  pursuant to
         clauses  (b) and  (d) of  this  paragraph  1  shall  be  made  whenever
         necessary  to ensure  that no payment is made by the Trust in excess of
         the  applicable  maximum  cap  imposed on asset  based,  front-end  and
         deferred  sales charges by subsection  (d) of Section 26 of Article III
         of the Rules of Fair Practice of the NASD.

         2. The Trust  understands  that agreements  between PFD and Dealers may
provide  for payment of fees to Dealers in  connection  with the sale of Class C
Shares and the provision of services to  shareholders  of the Trust.  Nothing in
this Class C Plan shall be construed as requiring  the Trust to make any payment
to any  Dealer  or to have any  obligations  to any  Dealer in  connection  with
services as a dealer of the Class C Shares.  PFD shall agree and undertake  that
any  agreement  entered into between PFD and any Dealer shall  provide that such
Dealer shall look solely to PFD for compensation for its services thereunder and
that in no event shall such Dealer seek any payment from the Trust.

         3.  Nothing  herein  contained  shall be deemed to require the Trust to
take any action  contrary to its  Declaration of Trust,  as it may be amended or
restated from time to time, or By-Laws or any applicable statutory or regulatory
requirement  to which it is  subject  or by which it is bound,  or to relieve or
deprive the Trust's Board of Trustees of the  responsibility  for and control of
the conduct of the affairs of the Trust.

         4. This Class C Plan shall  become  effective  upon  approval  by (i) a
"majority of the outstanding  voting securities" of Class C of the Trust, (ii) a
vote of the Board of  Trustees,  and (iii) a vote of a majority of the  Trustees
who are not "interested persons" of the Trust and who have no direct or indirect
financial  interest in the  operation  of the Class C Plan or in any  agreements
related to the Class C Plan (the "Qualified

                                      -4-
<PAGE>

Trustees"), such votes with respect to (ii) and (iii) above to be cast in person
at a meeting called for the purpose of voting on this Class C Plan.

         5. This Class C Plan will remain in effect indefinitely,  provided that
such continuance is "specifically  approved at least annually" by a vote of both
a  majority  of the  Trustees  of the  Trust  and a  majority  of the  Qualified
Trustees.  If such  annual  approval  is not  obtained,  this Class C Plan shall
expire on ________ __, 1997.

         6.  This  Class C Plan  may be  amended  at any  time by the  Board  of
Trustees,  provided  that  this  Class C Plan  may not be  amended  to  increase
materially the limitations on the annual  percentage of average net assets which
may be expended  hereunder without the approval of holders of a "majority of the
outstanding voting securities" of Class C of the Trust and may not be materially
amended in any case  without a vote of a majority of both the  Trustees  and the
Qualified Trustees. This Class C Plan may be terminated at any time by a vote of
a majority of the Qualified  Trustees or by a vote of the holders of a "majority
of the outstanding voting securities" of Class C of the Trust.

         7. The Trust and PFD shall  provide to the Trust's  Board of  Trustees,
and the Board of Trustees shall review, at least quarterly,  a written report of
the amounts  expended  under this Class C Plan and the  purposes  for which such
expenditures were made.

         8. While this Class C Plan is in effect,  the selection and  nomination
of Qualified  Trustees  shall be committed to the discretion of the Trustees who
are not "interested persons" of the Trust.

         9. For the  purposes  of this  Class C Plan,  the  terms  "assignment,"
"interested  persons,"  "majority  of the  outstanding  voting  securities"  and
"specifically approved at least annually" are used as defined in the 1940 Act.

                                      -5-
<PAGE>

         10. The Trust  shall  preserve  copies of this  Class C Plan,  and each
agreement  related  hereto and each  report  referred  to in  Paragraph 7 hereof
(collectively,  the "Records"), for a period of not less than six (6) years from
the end of the fiscal year in which such  Records were made and, for a period of
two (2) years, each of such Records shall be kept in an easily accessible place.

         11. This Class C Plan shall be construed in accordance with the laws of
The Commonwealth of Massachusetts and the applicable provisions of the 1940 Act.

         12. If any provision of this Class C Plan shall be held or made invalid
by a court decision,  statute,  rule or otherwise,  the remainder of the Class C
Plan shall not be affected thereby.

















                                      -6-


[ARTICLE] 6
[CIK] 0000831120
[NAME] PIONEER AMERICA INCOME TRUST
[SERIES]
   [NUMBER] 01
   [NAME] PIONEER AMERICA INCOME TRUST CLASS A
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          DEC-31-1995
[PERIOD-END]                               DEC-31-1995
[INVESTMENTS-AT-COST]                        161802169
[INVESTMENTS-AT-VALUE]                       168630976
[RECEIVABLES]                                  2060174
[ASSETS-OTHER]                                    8532
[OTHER-ITEMS-ASSETS]                             92933
[TOTAL-ASSETS]                               170792615
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      1092523
[TOTAL-LIABILITIES]                            1092523
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                     169292549
[SHARES-COMMON-STOCK]                         15956535
[SHARES-COMMON-PRIOR]                         17206644
[ACCUMULATED-NII-CURRENT]                        74424
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                      (6494180)
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                       6827299
[NET-ASSETS]                                 169700092
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                             12956877
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               (1676787)
[NET-INVESTMENT-INCOME]                       11280090
[REALIZED-GAINS-CURRENT]                      (814678)
[APPREC-INCREASE-CURRENT]                     14043149
[NET-CHANGE-FROM-OPS]                         24508561
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                   (11072485)
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                        2411447
[NUMBER-OF-SHARES-REDEEMED]                    4532725
[SHARES-REINVESTED]                             871169
[NET-CHANGE-IN-ASSETS]                         5671594
[ACCUMULATED-NII-PRIOR]                          52709
[ACCUMULATED-GAINS-PRIOR]                    (5413884)
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                           821251
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                2036708
[AVERAGE-NET-ASSETS]                         160877063
[PER-SHARE-NAV-BEGIN]                             9.41
[PER-SHARE-NII]                                   0.68
[PER-SHARE-GAIN-APPREC]                           0.79
[PER-SHARE-DIVIDEND]                            (0.68)
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              10.20
[EXPENSE-RATIO]                                   1.02
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0

<PAGE>
[ARTICLE] 6
[CIK] 0000831120
[NAME] PIONEER AMERICA INCOME TRUST
[SERIES]
   [NUMBER] 02
   [NAME] PIONEER AMERICA INCOME TRUST CLASS B
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          DEC-31-1995
[PERIOD-END]                               DEC-31-1995
[INVESTMENTS-AT-COST]                        161802169
[INVESTMENTS-AT-VALUE]                       168630976
[RECEIVABLES]                                  2060174
[ASSETS-OTHER]                                    8532
[OTHER-ITEMS-ASSETS]                             92933
[TOTAL-ASSETS]                               170792615
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      1092523
[TOTAL-LIABILITIES]                            1092523
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                     169292549
[SHARES-COMMON-STOCK]                           687528
[SHARES-COMMON-PRIOR]                           230859
[ACCUMULATED-NII-CURRENT]                        74424
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                      (6494180)
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                       6827299
[NET-ASSETS]                                 169700092
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                             12956877
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               (1676787)
[NET-INVESTMENT-INCOME]                       11280090
[REALIZED-GAINS-CURRENT]                      (814678)
[APPREC-INCREASE-CURRENT]                     14043149
[NET-CHANGE-FROM-OPS]                         24508561
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                     (231937)
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                         654066
[NUMBER-OF-SHARES-REDEEMED]                     215740
[SHARES-REINVESTED]                              18343
[NET-CHANGE-IN-ASSETS]                         5671594
[ACCUMULATED-NII-PRIOR]                          52709
[ACCUMULATED-GAINS-PRIOR]                    (5413884)
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                           821251
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                2036708
[AVERAGE-NET-ASSETS]                           3858529
[PER-SHARE-NAV-BEGIN]                             9.40
[PER-SHARE-NII]                                   0.61
[PER-SHARE-GAIN-APPREC]                           0.77
[PER-SHARE-DIVIDEND]                            (0.61)
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              10.17
[EXPENSE-RATIO]                                   1.77
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0



                          PIONEER AMERICA INCOME TRUST

                   Multiple Class Plan Pursuant to Rule 18f-3

                        Class A Shares and Class B Shares

                                 October 4, 1995


     Each class of shares of Pioneer  America  Income Trust (the  "Trust")  will
have the same relative  rights and  privileges  and be subject to the same sales
charges, fees and expenses,  except as set forth below. The Board of Trustees of
the Trust may  determine  in the future  that other  distribution  arrangements,
allocations of expenses  (whether  ordinary or  extraordinary) or services to be
provided to a class of shares are  appropriate  and amend this Plan  accordingly
without the approval of  shareholders  of any class.  Except as set forth in the
Trust's prospectus, shares may be exchanged only for shares of the same class of
another Pioneer mutual fund.

     Article I.  Class A Shares

     Class A Shares are sold at net asset value and subject to the initial sales
charge  schedule  or  contingent  deferred  sales  charge  ("CDSC")  and minimum
purchase  requirements  as set forth in the Trust's  prospectus.  Class A Shares
shall be entitled to the shareholder services set forth from time to time in the
Trust's prospectus with respect to Class A Shares. Class A Shares are subject to
fees calculated as a stated percentage of the net assets attributable to Class A
shares under the Trust's  Class A Rule 12b-1  Distribution  Plan as set forth in
such  Distribution  Plan. The Class A Shareholders have exclusive voting rights,
if any,  with  respect to the Class A Rule  12b-1  Distribution  Plan.  Transfer
agency fees are allocated to Class A Shares on a per account basis except to the
extent,  if any, such an allocation would cause the Trust to fail to satisfy any
requirement  necessary  to obtain or rely on a private  letter  ruling  from the
Internal Revenue Service ("IRS") relating to the issuance of multiple classes of
shares.  Class A shares  shall  bear the  costs  and  expenses  associated  with
conducting

<PAGE>

a shareholder meeting for matters relating to Class A shares.

     Article II.  Class B Shares

     Class B Shares are sold at net asset value per share without the imposition
of an initial sales charge.  However, Class B shares redeemed within a specified
number  of years  of  purchase  will be  subject  to a CDSC as set  forth in the
Trust's  prospectus.  Class B Shares are sold  subject to the  minimum  purchase
requirements  set  forth in the  Trust's  prospectus.  Class B  Shares  shall be
entitled to the shareholder  services set forth from time to time in the Trust's
prospectus  with  respect to Class B Shares.  Class B Shares are subject to fees
calculated  as a stated  percentage  of the net assets  attributable  to Class B
shares  under  the  Class B Rule  12b-1  Distribution  Plan as set forth in such
Distribution  Plan. The Class B Shareholders of the Trust have exclusive  voting
rights,  if any,  with  respect to the Trust's  Class B Rule 12b-1  Distribution
Plan.  Transfer  agency  fees are  allocated  to Class B Shares on a per account
basis except to the extent,  if any, such an allocation would cause the Trust to
fail to satisfy any requirement  necessary to obtain or rely on a private letter
ruling  from the IRS  relating to the  issuance  of multiple  classes of shares.
Class B shares shall bear the costs and expenses  associated  with  conducting a
shareholder meeting for matters relating to Class B shares.

     Class B Shares will automatically convert to Class A Shares of the Trust at
the end of a specified  number of years after the initial purchase date of Class
B shares,  except as provided in the Trust's  prospectus.  Such  conversion will
occur at the  relative  net  asset  value per share of each  class  without  the
imposition of any sales charge,  fee or other charge.  The conversion of Class B
Shares  to  Class  A  Shares  may be  suspended  if it is  determined  that  the
conversion  constitutes or is likely to constitute a taxable event under federal
income tax law.

     The  initial  purchase  date  for  Class  B  shares  acquired  through  (i)
reinvestment  of  dividends  on Class B Shares  or (ii)  exchange  from  another
Pioneer  mutual fund will be


                                      -2-
<PAGE>

deemed to be the date on which the original Class B shares were purchased.

     Article III.     Approval by Board of Trustees

     This Plan shall not take effect until it has been approved by the vote of a
majority (or whatever  greater  percentage  may,  from time to time, be required
under Rule 18f-3  under the  Investment  Company  Act of 1940,  as amended  (the
"Act")) of (a) all of the  Trustees of the Trust,  and (b) those of the Trustees
who are not "interested  persons" of the Trust, as such term may be from time to
time defined under the Act.

     Article IV.      Amendments

     No material  amendment to the Plan shall be effective unless it is approved
by the Board of Trustees in the same manner as is provided  for approval of this
Plan in Article III.











                                      -3-








                          PIONEER AMERICA INCOME TRUST

                   Multiple Class Plan Pursuant to Rule 18f-3

                Class A Shares, Class B Shares and Class C Shares

                                January 31, 1996


         Each class of shares of Pioneer America Income Trust (the "Trust") will
have the same relative  rights and  privileges  and be subject to the same sales
charges, fees and expenses, except as set forth below. The Board of Trustees may
determine in the future that other  distribution  arrangements,  allocations  of
expenses  (whether  ordinary or  extraordinary)  or services to be provided to a
class of shares are  appropriate  and amend this Plan  accordingly  without  the
approval  of  shareholders  of any  class.  Except as set  forth in the  Trust's
prospectus, shares may be exchanged only for shares of the same class of another
Pioneer mutual fund.

         Article I.  Class A Shares

         Class A Shares are sold at net asset  value and  subject to the initial
sales charge  schedule or contingent  deferred sales charge ("CDSC") and minimum
purchase  requirements  as set forth in the Trust's  prospectus.  Class A Shares
shall be entitled to the shareholder services set forth from time to time in the
Trust's prospectus with respect to Class A Shares. Class A Shares are subject to
fees calculated as a stated percentage of the net assets attributable to Class A
shares under the Trust's  Class A Rule 12b-1  Distribution  Plan as set forth in
such  Distribution  Plan. The Class A Shareholders have exclusive voting rights,
if any,  with  respect to the Class A Rule  12b-1  Distribution  Plan.  Transfer
agency fees are allocated to Class A Shares on a per account basis except to the
extent,  if any, such an allocation would cause the Trust to fail to satisfy any
requirement  necessary  to obtain or rely on a private  letter  ruling  from the
Internal Revenue Service ("IRS") relating to the issuance of multiple classes of
shares.  Class A shares  shall  bear the  costs  and  expenses  associated  with
conducting a shareholder meeting for matters relating to Class A shares.


<PAGE>


         Article II.  Class B Shares

         Class B Shares  are sold at net  asset  value  per  share  without  the
imposition of an initial sales charge. However, Class B shares redeemed within a
specified  number of years of purchase will be subject to a CDSC as set forth in
the Trust's prospectus.  Class B Shares are sold subject to the minimum purchase
requirements  set  forth in the  Trust's  prospectus.  Class B  Shares  shall be
entitled to the shareholder  services set forth from time to time in the Trust's
prospectus  with  respect to Class B Shares.  Class B Shares are subject to fees
calculated  as a stated  percentage  of the net assets  attributable  to Class B
shares  under  the  Class B Rule  12b-1  Distribution  Plan as set forth in such
Distribution  Plan. The Class B Shareholders of the Trust have exclusive  voting
rights,  if any,  with  respect to the Trust's  Class B Rule 12b-1  Distribution
Plan.  Transfer  agency  fees are  allocated  to Class B Shares on a per account
basis except to the extent,  if any, such an allocation would cause the Trust to
fail to satisfy any requirement  necessary to obtain or rely on a private letter
ruling  from the IRS  relating to the  issuance  of multiple  classes of shares.
Class B shares shall bear the costs and expenses  associated  with  conducting a
shareholder meeting for matters relating to Class B shares.

         Class B Shares  will  automatically  convert  to Class A Shares  of the
Trust at the end of a specified  number of years after the initial purchase date
of Class B shares, except as provided in the Trust's prospectus. Such conversion
will occur at the relative  net asset value per share of each class  without the
imposition of any sales charge,  fee or other charge.  The conversion of Class B
Shares  to  Class  A  Shares  may be  suspended  if it is  determined  that  the
conversion  constitutes or is likely to constitute a taxable event under federal
income tax law.

         The  initial  purchase  date for Class B shares  acquired  through  (i)
reinvestment  of  dividends  on Class B Shares  or (ii)  exchange  from  another
Pioneer  mutual fund will be deemed to be the date on which the original Class B
shares were purchased.

                                      -2-
<PAGE>


         Article III.      Class C Shares

         Class C Shares  are sold at net  asset  value  per  share  without  the
imposition of an initial sales charge.  However,  Class C shares redeemed within
one year of  purchase  will be  subject  to a CDSC as set  forth in the  Trust's
prospectus. Class C Shares are sold subject to the minimum purchase requirements
set forth in the  Trust's  prospectus.  Class C Shares  shall be entitled to the
shareholder  services set forth from time to time in the Trust's prospectus with
respect to Class C Shares.  Class C Shares are subject to fees  calculated  as a
stated  percentage  of the net assets  attributable  to Class C shares under the
Class C Rule 12b-1 Distribution Plan as set forth in such Distribution Plan. The
Class C  Shareholders  of the Trust have exclusive  voting rights,  if any, with
respect to the Trust's Class C Rule 12b-1  Distribution  Plan.  Transfer  agency
fees are  allocated  to Class C Shares  on a per  account  basis  except  to the
extent,  if any, such an allocation would cause the Trust to fail to satisfy any
requirement  necessary to obtain or rely on a private letter ruling from the IRS
relating to the  issuance of multiple  classes of shares.  Class C shares  shall
bear the costs and expenses associated with conducting a shareholder meeting for
matters relating to Class C shares.

         The  initial  purchase  date for Class C shares  acquired  through  (i)
reinvestment  of  dividends  on Class C Shares  or (ii)  exchange  from  another
Pioneer  mutual fund will be deemed to be the date on which the original Class C
shares were purchased.

         Article IV.       Approval by Board of Trustees

         This Plan shall not take effect until it has been  approved by the vote
of a  majority  (or  whatever  greater  percentage  may,  from time to time,  be
required under Rule 18f-3 under the  Investment  Company Act of 1940, as amended
(the  "Act"))  of (a) all of the  Trustees  of the  Trust,  and (b) those of the
Trustees who are not "interested persons" of the Trust, as such term may be from
time to time defined under the Act.

                                      -3-
<PAGE>


         Article V.        Amendments

         No  material  amendment  to the Plan  shall be  effective  unless it is
approved by the Board of Trustees in the same manner as is provided for approval
of this Plan in Article IV.



















                                      -4-



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