PIONEER TAX MANAGED FUND
497, 1999-11-19
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Pioneer
Tax-Managed Fund






                              Class A, Class B and Class C Shares
                                    Prospectus, November 18, 1999


















                              Contents


                              Basic  information  about the fund 1
                              Management 6
                              Buying, exchanging and selling shares 8
                              Dividends, capital gains and taxes 27






Neither the Securities and Exchange  Commission nor any state securities  agency
has approved the fund's shares or determined whether this prospectus is accurate
or complete. Any representation to the contrary is a crime.


<PAGE>




















[text box]
An investment in the fund is not a bank deposit and is not insured or guaranteed
by the Federal Deposit Insurance Corporation or any other government agency.
[end text box]

[text box]
Contact your investment professional to discuss how the fund fits into your
portfolio.
[end text box]


<PAGE>


Basic information about the fund




Investment objective
Long-term capital growth.

Principal investment strategies
Normally,  the fund  invests  at least 65% of its  assets in equity  securities,
primarily  of U.S.  issuers.  For  purposes of the fund's  investment  policies,
equity securities include common and preferred stocks,  warrants and convertible
debt securities.


Pioneer Investment Management, Inc., the fund's investment adviser, uses a value
approach to select the fund's investments.  Using this investment style, Pioneer
seeks securities selling at reasonable prices or substantial  discounts to their
underlying  values  and then holds  these  securities  until the  market  values
reflect their intrinsic values.  Pioneer evaluates a security's  potential value
based on the company's assets and prospects for earnings growth.  In making that
assessment,  Pioneer  employs due diligence and fundamental research, an
evaluation of the issuer based on its financial statements and operations.
Pioneer relies  on the  knowledge,  experience  and  judgment  of its own staff
who have access to a wide variety of research. Pioneer focuses on the quality
and price of individual issuers,  not on economic sector or  market-timing
strategies. Factors Pioneer looks for in selecting investments include:
o        Favorable expected returns relative to perceived risk
o        Above average potential for earnings and revenue growth
o        Low market valuations  relative to earnings forecast,  book value,
         cash flow and  sales
o        A  sustainable  competitive  advantage,  such as a brand  name,
         customer base, proprietary technology or economies of scale




[begin sidebar]
- -----------------------------------------------------------------------
[graphic icon: magnifying glass]

Tax-managed investing
The fund  seeks to  minimize  the impact of  federal  income tax on  shareholder
returns.
- -----------------------------------------------------------------------
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Tax management strategies
The fund will use various strategies including:



o  Investing primarily in capital growth-oriented stocks with no or a low
   dividend yield.  These stocks tend to generate lower current taxable income
   than most fixed income securities and high-dividend stocks
o  Avoiding sales of appreciated securities that result in capital gain, except
   where there are compelling investment reasons for the sale
o  Selling securities to realize capital losses that offset capital gains that
   have or are expected to be recognized
o  When selling a security,  focusing on the highest cost lot of that security
   first (which  reduces the capital gain or increases  the loss  realized by
   the  fund).  The  fund  will  also  consider  the  short-term  or  long-term
   characterization  of a gain or loss and will  attempt to offset  short-term
   gains with short-term losses


Principal risks of investing in the fund
Even though the fund seeks reasonable income and capital growth,  you could lose
money on your  investment  or not make as much as if you invested  elsewhere if:
o The stock  market goes down (this risk may be greater in the short term)
o Value  stocks  fall out of favor with  investors
o The fund's  assets  remain undervalued or do not have the potential value
  originally expected

The fund uses tax  management  strategies  with the  objective  of reducing  the
amount of  distributions  subject to federal  taxation.  However,  Pioneer  will
follow tax  management  strategies  only to the extent that they do not conflict
with the fund's goal of capital  growth or the  operation of the fund.  The fund
may realize a short-term gain on the sale of a security:
o if Pioneer  believes it will  decline in value
o to increase  diversification
o to raise cash to pay expenses or meet redemption requests.

In addition,  some  securities in the fund's  portfolio will regularly  generate
taxable income.  At times,  tax-managed funds are more volatile than other funds
because they tend to hold stocks longer to avoid realizing gain due to portfolio
turnover.  In addition,  compared to  traditionally  managed  mutual funds,  the
tax-managed  strategies  may cause a higher  percentage  of the fund's net asset
value to be represented by unrealized capital  appreciation,  which represents a
potential future tax liability to shareholders.


<PAGE>


The fund's performance
Since  the  fund is  newly  organized,  it does  not  disclose  any  performance
information.   The  fund's  performance  will  vary  from  year  to  year.  Past
performance does not necessarily indicate how a fund will perform in the future.
As a shareowner, you may lose or make money on your investment.

Fees and expenses
These are the fees and  expenses,  based on  estimated  expenses for the current
fiscal year, you may pay if you invest in the fund.

Shareowner fees
paid directly from your investment          Class A   Class B   Class C
- -----------------------------------------------------------------------


Maximum sales charge (load) when you buy shares
  as a percentage of offering price            5.75%     None      None
 .......................................................................
Maximum deferred sales charge (load) as a percentage of
  offering price or the amount you receive when you sell
  shares, whichever is less                  None(1)      4%       1%
- -----------------------------------------------------------------------

Annual fund operating expenses
paid from the assets of the fund
as a percentage of average daily net
   assets                                   Class A   Class B   Class C
- -----------------------------------------------------------------------
   Management Fee(2)                         0.75%   0.75%   0.75%
 .......................................................................
   Distribution and Service (12b-1) Fee      0.25%   1.00%   1.00%
 .......................................................................
   Other Expenses(2)                            0.99%   0.99%   0.99%
 ......................................................................
Total Annual Fund Operating Expenses(2)      1.99%   2.74%   2.27%
- -----------------------------------------------------------------------
(1) Purchases of $1 million or more and purchases by participants in certain
    group plans are not subject to an initial sales charge but may be subject to
    a contingent deferred sales charge. See "Buying, exchanging and selling
    shares."
(2) Pioneer has agreed not to impose all or a portion of its management fee
    and, if necessary, to limit other operating expenses of the fund to the
    extent  required  to reduce  Class A expenses  to 1.75% of the  average
    daily net assets  attributable  to Class A shares;  the portion of fund
    expenses  attributable  to Class B and Class C shares  will be  reduced
    only to the extent such  expenses are reduced for Class A shares.  This
    agreement is voluntary  and  temporary and may be revised or terminated
    at any time.

<TABLE>
<CAPTION>


                                               Class A      Class B       Class C
    <S>                                    <C>           <C>            <C>
     Management Fees                        0.51%         0.51%          0.51%
     Distribution and Service (12b-1) fees  0.25%         1.00%          1.00%
     Other Expenses                         0.99%         0.99%          0.99%
     Total Annual Fund Operating Expenses   1.75%         2.50%          2.50%
</TABLE>


Example
This example helps you compare the costs of investing in the fund with the cost
of investing in other mutual funds. It assumes that: a) you invest $10,000 in
the fund for the time periods shown, b) you reinvest all dividends and
distributions, c) your investment has a 5% return each year and d) the fund's
operating expenses remain the same.

Although your actual costs may be higher or lower,  under these assumptions your


            If you sell your shares               If you do not sell your shares
    ----------------------------------------------------------------------------
                           Number of years you own your shares
    ----------------------------------------------------------------------------
              1        3                     1        3
- ----------------------------------------------------------
Class A    $643      $1,046             $643     $1,046
 ..........................................................
Class B     677       1,150              277      850
 ..........................................................
Class C     377       277                277      850
- ----------------------------------------------------------



<PAGE>


Basic information about the fund





Other investment strategies
As discussed, the fund invests primarily in equity securities of U.S. companies
to seek long-term capital growth.

This  section  describes  additional  investments  that  the  fund  may  make or
strategies  that it may pursue to a lesser  degree to achieve  the fund's  goal.
Some of the fund's  secondary  investment  policies also entail risks.  To learn
more about these investments and risks, you should obtain and read the statement
of additional information (SAI).


Investments other than U.S. equity securities
The fund may invest up to 10% of its total  assets (at the time of  purchase) in
equity securities of non-U.S. corporate issuers and debt securities of non-U.S.
corporate and government issuers.  The fund will not invest more than 5% of its
total  assets  (at the time of  purchase)  in the  securities  of emerging
markets issuers.  The fund invests in non-U.S.  securities to diversify its
portfolio  when  they  offer similar  or  greater  potential  for  capital
appreciation  compared to U.S. securities.  Investing  in non-U.S.  issuers may
involve unique risks compared to investing in securities of U.S. issuers.


The fund may invest the balance of its assets in debt  securities  of  U.S.
corporate and government issuers.  Generally the fund may acquire debt
securities that are investment  grade,  but the fund may  invest up to 5% of
its total  assets (at the time of purchase) in lower quality debt securities
including  convertible  debt securities.  The fund invests in debt securities
when Pioneer  believes they are consistent  with the fund's  investment
objective  and offer the  potential for capital growth, to diversify the fund's
portfolio or for greater liquidity.


Debt  securities  are  subject  to the  risk of an  issuer's  inability  to meet
principal or interest payments on its obligations. Factors that could contribute
to a decline  in the market  value of debt  securities  in the fund's  portfolio
include rising  interest rates or a reduction in the perceived  creditworthiness
of the issuer of the  securities.  A debt security is investment  grade if it is
rated in one of the top four  categories by a  nationally recognized  securities
rating organization or determined to be of equivalent credit quality by Pioneer.
Debt securities rated below  investment grade are commonly  referred to as "junk
bonds" and are considered  speculative.  Below  investment grade debt securities
involve  greater risk of loss,  are subject to greater price  volatility and are
less liquid,  especially during periods of economic  uncertainty or change, than


Temporary investments
Normally,  the  fund  invests  substantially  all  of its  assets  to  meet  its
investment  objective.  The fund may  invest  the  remainder  of its  assets  in
securities with a remaining  maturity of less than one year, cash equivalents or
may hold cash. For temporary  defensive  purposes,  the fund may depart from its
principal  investment  strategies  and invest part or all of its assets in these
securities.  During  such  periods,  the  fund  may not be able to  achieve  its
investment  objective.  The fund intends to adopt a defensive strategy only when
Pioneer  believes  common  stocks have  extraordinary  risks due to political or
economic factors.


<PAGE>
Derivatives
The fund may use  futures,  options and other  derivatives.  A  derivative  is a
security or  instrument  whose value is  determined by reference to the value or
the  change in value of one or more  securities,  currencies,  indices  or other
financial instruments. The fund does not use derivatives as a primary investment
technique and generally limits their use to hedging.  However,  the fund may use
derivatives for a variety of purposes, including: ss. As a hedge against adverse
changes in stock market prices, interest rates or currency exchange rates ss. As
a substitute  for  purchasing or selling  securities  ss. To increase the fund's
return as a non-hedging strategy that may be considered speculative

Even a small  investment in  derivatives  can have a  significant  impact on the
fund's  exposure to stock market  values,  interest  rates or currency  exchange
rates.  If changes in a  derivative's  value do not correspond to changes in the
value of the fund's other  investments,  the fund may not fully  benefit from or
could lose money on the  derivative  position.  In  addition,  some  derivatives
involve  risk of loss if the person who issued the  derivative  defaults  on its
obligation. Certain derivatives may be less liquid and more difficult to value.


<PAGE>


Management

Pioneer, the fund's investment adviser,
selects the fund's investments and oversees the fund's operations.


Pioneer Group
The Pioneer Group,  Inc. and its subsidiaries are engaged in financial  services
businesses in the United States and many foreign  countries.  As of December 31,
1998,  the firm had more than $23 billion in assets under  management  worldwide
including  more than $22 billion in U.S.  mutual funds.  The firm's U.S.  mutual
fund investment  history  includes  creating in 1928, one of the first
mutual funds. John F. Cogan,  chairman of the board and president of The Pioneer
Group,  Inc.,  owns  approximately  14% of the firm.  He is also an officer  and
director of each of the Pioneer mutual funds.


Investment adviser
Pioneer manages a family of U.S. and  international  stock funds, bond funds and
money market funds.  Pioneer is a subsidiary of The Pioneer Group, Inc. Its main
office is at 60 State Street, Boston, Massachusetts 02109.


Portfolio manager
Day-to-day  management of the fund's portfolio is the  responsibility of John A.
Carey. Mr. Carey is a senior vice president of Pioneer. He joined Pioneer in
1979 as an analyst and has been acting as a portfolio manager since 1986.

Mr.  Carey  is  supported  by a team of  portfolio  managers  and  analysts  who
specialize in U.S. equity  securities.  This team provides research for the fund
and other Pioneer mutual funds with similar investment objectives or styles. Mr.
Carey and his team operate under the  supervision  of Theresa A.  Hamacher.  Ms.
Hamacher is chief investment officer of Pioneer.  She joined Pioneer in 1997 and
has  been  an  investment  professional  since  1984, most  recently  as  chief
investment officer at another investment adviser.



<PAGE>

Management fee
The fund  pays  Pioneer  a fee for  managing  the fund and to cover  the cost of
providing  certain  services to the fund.  Pioneer's  annual fee is 0.75% of the
fund's  average  daily net  assets up to $1 billion and 0.70% of the assets
over $1 billion.  The fee is normally computed daily and paid monthly.



Distributor and transfer agent
Pioneer Funds Distributor,  Inc. is the fund's distributor.  Pioneering Services
Corporation is the fund's transfer agent.  The fund  compensates the distributor
and transfer agent for their  services.  The  distributor and the transfer agent
are subsidiaries of The Pioneer Group, Inc.


Year 2000
Information technology experts are concerned about computer and other electronic
systems'  ability to process  date-related  information  on and after January 1,
2000. This scenario, commonly referred to as the "Year 2000 problem," could have
an adverse impact on the fund and the provision of services to its  shareowners.
Pioneer is addressing  the Year 2000  problem  with  respect to its systems and
those used by the distributor and transfer agent. During 1999, Pioneer finished
addressing all material Year 2000 issues and participated in industry-wide
testing.  The fund has obtained assurances from its other service providers
that they have taken appropriate Year 2000  measures and Pioneer continues to
monitor their  efforts.  Although  the fund  does not  expect  the Year 2000
problem to adversely  impact it, the fund cannot  guarantee  that its,  or the
fund's service providers', efforts will be successful.



<PAGE>


Buying, exchanging and selling shares





Net asset value

The fund's net asset value is the value of its portfolio of securities  plus any
other assets minus its operating  expenses and any other  liabilities.  The fund
calculates  a net asset  value for each  class of shares  every day the New York
Stock Exchange is open when regular trading closes  (normally 4:00 p.m.  Eastern
time).

The fund  generally  values its portfolio  securities  based on market prices or
quotations. When market prices are not available or are considered by Pioneer to
be unreliable,  the fund may use an asset's fair value. Fair value is determined
in accordance with  procedures  approved by the fund's  trustees.  International
securities  markets may be open on days when the U.S.  markets  are closed.  For
this reason, the values of any international  securities owned by the fund could
change on a day when you cannot buy or sell shares of the fund.

You buy or sell shares at the net asset value per share calculated on the day of
your transaction, adjusted for any applicable sales charge. When you buy Class A
shares,  you pay an  initial  sales  charge.  When you  sell  Class B or Class C
shares, you may pay a contingent deferred sales charge depending on how long you
have owned your shares.

Choosing a class of shares

The fund offers three classes of shares through this prospectus.  Each class has
different sales charges and expenses, allowing you to choose the class that best
meets your needs.

Factors you should consider include:
o  How long you expect to own the shares
o  The expenses paid by each class
o  Whether you qualify for any reduction or waiver of sales charges

Your  investment  professional  can help you  determine  which  class meets your
goals.  Your investment firm may receive different  compensation  depending upon
which class you choose.  If you are not a U.S. citizen and are purchasing shares
outside  the U.S.,  you may pay  different  sales  charges  under local laws and
business practices.

Distribution plans
The fund has  adopted  a  distribution  plan for each  class of  shares  offered
through  this  prospectus  in  accordance  with Rule 12b-1 under the  Investment
Company Act of 1940. Under each plan the fund pays distribution and service fees
to the distributor.  Because these fees are an ongoing  expense,  over time they
increase the cost of your  investment  and your shares may cost more than shares
that are not subject to a distribution fee.

[text box: magnifyer icon]
Share price
The net  asset  value  per  share  calculated  on the  day of your  transaction,
adjusted for any  applicable  sales  charge,  is often  referred to as the share
price. [end text box]


<PAGE>








Comparing classes of shares

Class A
Class B
Class C

Why you might prefer each class
Class A shares  may be your best  alternative  if you  prefer to pay an  initial
sales charge and have lower annual expenses, or if you qualify for any reduction
or waiver of the initial sales  charge.  You may prefer Class B shares if you do
not want to pay an initial sales charge,  or if you plan to hold your investment
for at least six years.  Class B shares are not recommended if you are investing
$250,000  or more.  You may  prefer  Class C shares if you do not wish to pay an
initial sales charge and you would rather pay higher annual  expenses over time.
Initial  sales  charge Up to 5.75% of the  offering  price,  which is reduced or
waived for large  purchases and certain types of investors.  At the time of your
purchase,  your investment firm may receive a commission from the distributor of
up to 5%, declining as the size of your investment increases.

None

None

Contingent deferred sales charges
None, except in certain circumstances when the initial sales charge is waived.

Up to 4% is charged if you sell your shares. The charge is reduced over time and
not charged after six years.  Your investment firm may receive a commission from
the distributor at the time of your purchase of up to 4%.A 1% charge if you sell
your shares  within one year of  purchase.  Your  investment  firm may receive a
commission from the distributor at the time of your purchase of up to 1%.

Distribution and service fees Up to 0.25% of average daily net assets.

Up to 1% of average daily net assets.

Up to 1% of average daily net assets.

Annual expenses (including  distribution and service fees) Lower than Class B or
Class C.

Higher than Class A shares; Class B shares convert to Class A shares after eight
years.

Higher than Class A shares;  Class C shares do not convert to any other class of
shares. You continue to pay higher annual expenses.
Exchange privilege
Class A shares of other Pioneer mutual funds.

Class B shares of other Pioneer mutual funds.

Class C shares of other Pioneer mutual funds.


<PAGE>


Buying, exchanging and selling shares





Sales charges: Class A shares

You pay the  offering  price when you buy Class A shares  unless you  qualify to
purchase shares at net asset value.  You pay a lower sales charge as the size of
your  investment  increases.  You do not pay a sales  charge  when you  reinvest
dividends or distributions paid by the fund.

Investments of $1 million or more
You do not pay a sales  charge  when  you  purchase  Class A  shares  if you are
investing $1 million or more, or you are a  participant  in certain group plans.
However,  you pay a deferred sales charge if you sell your Class A shares within
one year of purchase. The sales charge is equal to 1% of your investment or your
sales proceeds, whichever is less.

Reduced sales charges
You may qualify for a reduced Class A sales charge if you own or are  purchasing
shares of Pioneer mutual funds. If you or your investment  professional notifies
the  distributor of your  eligibility  for a reduced sales charge at the time of
your purchase,  the distributor  will credit you with the combined value (at the
current offering price) of all your Pioneer mutual fund shares and the shares of
your  spouse and the  shares of any  children  under 21.  Certain  trustees  and
fiduciaries  may also  qualify for a reduced  sales  charge.  For this  purpose,
Pioneer  mutual funds  include any fund for which the  distributor  is principal
underwriter and, at the  distributor's  discretion,  may include funds organized
outside the U.S. managed by Pioneer.

See "Qualifying for a reduced sales charge" for more information.

Sales charges for Class A shares
                                                  Sales charge as % of
                                              ------------------------
                                              Offering      Net amount
Amount of purchase                               price        invested
- ----------------------------------------------------------------------
Less than $50,000                                 5.75            6.10
 ......................................................................
$50,000 but less than $100,000                    4.50            4.71
 ......................................................................
$100,000 but less than $250,000                   3.50            3.63
 ......................................................................
$250,000 but less than $500,000                   2.50            2.56
 ......................................................................
$500,000 but less than $1 million                 2.00            2.04
 ......................................................................
$1 million or more                                 -0-             -0-
- ----------------------------------------------------------------------

[text box: magnifyer icon]
Offering price
The net asset value per share plus any initial sales charge.
[end text box]


<PAGE>








Sales charges: Class B shares

You buy Class B shares at net asset  value per share  without  paying an initial
sales charge.  However,  you will pay a contingent  deferred sales charge to the
distributor  if you sell your Class B shares  within six years of purchase.  The
contingent  deferred  sales  charge  decreases as the number of years since your
purchase increases.

Contingent deferred sales charge
- ---------------------------------------------
On shares sold                      As a % of
before the              dollar amount subject
end of year               to the sales charge
- ---------------------------------------------
1                                           4
 .............................................
2                                           4
 .............................................
3                                           3
 .............................................
4                                           3
 .............................................
5                                           2
 .............................................
6                                           1
 .............................................
7+                                        -0-
- ---------------------------------------------

Conversion to Class A shares
Class B shares automatically convert into Class A shares. This helps you because
Class A shares pay lower expenses.

Your  Class B shares  will  convert  to Class A shares at the  beginning  of the
calendar month (calendar  quarter for shares  purchased  before October 1, 1998)
that is eight years after the date of purchase except that:
o    Shares bought by reinvesting  dividends  and capital  gains will convert
     to Class A shares at the same time as shares on which the dividend or
     distribution was paid
o    Shares purchased by exchanging shares from another fund will convert on the
     date that the shares originally  acquired would have converted into Class A
     shares

Currently, the Internal Revenue Service permits the conversion of shares to take
place without  imposing a federal tax.  Conversion may not occur if the Internal
Revenue Service deems it a taxable event for federal tax purposes.

[text box]
Paying the contingent deferred sales charge (CDSC)

Several rules apply for Class B shares so that you pay the lowest CDSC.
o    The CDSC is calculated on the current market value, or the original cost,
     of the shares you are selling, whichever is less
o    You do not pay a CDSC on reinvested dividends or distributions
o    In determining  the number of years since your purchase,  all purchases are
     considered  to have been made on the first day of that month  (quarter  for
     shares purchased before October 1, 1998)
o    If you sell only some of your shares,  the  transfer  agent will first sell
     your  shares  that are not subject to any CDSC and then the shares that you
     have owned the longest
o    You may qualify for a waiver of the CDSC normally charged. See "Qualifying
     for a reduced sales charge"
[end text box]

[text box: magnifyer icon]
Contingent deferred sales charge
A sales charge that may be deducted from your sale proceeds. [end text box]


<PAGE>


Buying, exchanging and selling shares





Sales charges: Class C shares

You buy Class C shares at net asset  value per share  without  paying an initial
sales  charge.  However,  if you sell  your  Class C shares  within  one year of
purchase,  you will pay to the distributor a contingent deferred sales charge of
1% of the current  market  value,  or the original  cost,  of the shares you are
selling, whichever is less.

[text box]
Paying the contingent deferred sales charge (CDSC)

Several  rules apply for Class C shares  which  result in your paying the lowest
CDSC.
o    The CDSC is calculated on the current market value, or the original cost,
     of the shares you are selling, whichever is less
o    You do not pay a CDSC on reinvested dividends or distributions
o    In determining  the number of years since your purchase,  all purchases are
     considered  to have been made on the first day of that month  (quarter  for
     shares purchased before October 1, 1998)
o    If you sell only some of your shares,  the  transfer  agent will first sell
     your  shares  that are not subject to any CDSC and then the shares that you
     have bought most recently
o    You may qualify for a waiver of the CDSC normally charged. See "Qualifying
     for a reduced sales charge"
[end text box]

[text box: magnifyer icon]
Contingent deferred sales charge
A sales charge that may be deducted from your sale proceeds. [end text box]


<PAGE>








Qualifying for a reduced sales charge

Initial Class A sales charge waivers
You may purchase  Class A shares at net asset value  (without a sales charge) or
with a reduced  initial sales charge as follows.  If you believe you qualify for
any of the waivers discussed below, contact the distributor. You are required to
provide  written  confirmation  of your  eligibility.  You may not resell  these
shares except to or on behalf of the fund.

Class A purchases at net asset value are available to:
o    Current or former trustees and officers of the fund;
o    Current or former partners and employees of legal counsel to the fund;
o    Current or former directors, officers, employees or sales representatives
     of The Pioneer Group, Inc. and its affiliates;
o    Current or former directors,  officers,  employees or sales representatives
     of any  subadviser or a predecessor  adviser (or their  affiliates)  to any
     investment company for whom Pioneer serves as investment adviser;
o    Current   or   former   officers,   partners,   employees   or   registered
     representatives  of broker-dealers  whom have entered into sales agreements
     with the distributor;
o    Members of the immediate families of any of the persons above;
o    Any trust,  custodian,  pension, profit sharing or other benefit plan of
     the foregoing persons;
o    Insurance company separate  accounts;
o    Certain "wrap accounts" for the benefit of clients of financial planners
     adhering to standards established by the distributor;
o    Other funds and accounts for which Pioneer or any of its affiliates serve
     as investment adviser or manager;
o    In connection with certain reorganization, liquidation or acquisition
     transactions involving other investment companies or personal holding
     companies;
o    Certain unit investment trusts;
o    Employer-sponsored retirement plans with 100 or more eligible employees or
     at least $500,000 in plan assets;
o    Participants  in  Optional  Retirement  Programs if (i) your  employer  has
     authorized a limited  number of mutual funds to participate in the program,
     (ii) all participating  mutual funds sell shares to program participants at
     net asset  value,  (iii) your  employer  has agreed in writing to  actively
     promote Pioneer mutual funds to program  participants  and (iv) the program
     provides for a matching contribution for each participant contribution.


<PAGE>


Buying, exchanging and selling shares





Class A purchases at a reduced  initial sales charge or net asset value are also
available  to:  Group  Plans  if  the  sponsoring  organization
o    recommends purchases  of Pioneer  mutual  funds to,
o    permits  solicitation  of, or
o    facilitates purchases by
its employees, members or participants.


Letter of intent (Class A)
You can use a letter of intent to qualify for reduced sales charges in two
situations:
o    If you plan to invest at least $50,000 (excluding any reinvestment of
     dividends and capital gain distributions) in the fund's Class A shares
     during the next 13 months
o    If you  include  in your  letter  of  intent  the  value -- at the  current
     offering  price -- of all of your  Class A shares of the fund and all other
     Pioneer  mutual fund shares held of record in the amount used to  determine
     the applicable sales charge for the fund shares you plan to buy


Completing  a letter of intent  does not  obligate  you to  purchase  additional
shares,  but if you do not buy enough shares to qualify for the projected  level
of sales  charges  by the end of the  13-month  period  (or  when you sell  your
shares,  if earlier),  the distributor will  recalculate your sales charge.  You
must pay the  additional  sales charge  within 20 days after you are notified of
the  recalculation  or it will be  deducted  from  your  account  (or your  sale
proceeds). For more information regarding letters of intent, please contact your
investment   professional  or  obtain  and  read  the  statement  of  additional
information.

Reinvestment (Class A)
If you sold shares of another  mutual  fund within the past 60 days,  you may be
able to reinvest the sale  proceeds from that fund in Class A shares of the fund
at net asset value without a sales charge.

To qualify:
o    Your investment firm must have a sales agreement with the distributor;
o    You must  demonstrate  that the amount invested is from the proceeds of the
     sale of  shares  from  another  mutual  fund that  occurred  within 60 days
     immediately preceding your purchase;
o    You paid a sales charge on the original purchase of the shares sold; and
o    The  mutual  fund  whose  shares  were sold  also  offers  net asset  value
     purchases to shareowners that sell shares of a Pioneer mutual fund.


<PAGE>








Waiver or reduction of contingent deferred sales charges (CDSC)

Class A shares that are subject to a CDSC
Purchases of Class A shares of $1 million 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 the  distributor 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.  However,  the
CDSC  is  waived   for   redemptions   of  Class  A  shares   purchased   by  an
employer-sponsored  retirement  plan qualified under Section 401 of the Internal
Revenue Code that has 1,000 or more  eligible  employees or at least $10 million
in plan assets.

Class A, Class B and Class C shares
The distributor may waive or reduce the CDSC for Class A shares that are subject
to a CDSC or for Class B or Class C shares if:
o    The distribution results from the death of all registered account owners or
     a participant in an employer-sponsored plan. For UGMAs, UTMAs and trust
     accounts, the waiver applies only upon the death of all beneficial owners;
o    The distribution  results from a total and permanent disability (as defined
     by Section 72 of the Internal Revenue Code) occurring after the purchase of
     the shares being sold. For UGMAs, UTMAs and trust accounts, the waiver only
     applies upon the disability of all beneficial owners;
o    The distribution is made in connection with limited  automatic  redemptions
     as described in "Systematic  withdrawal  plans" (limited in any year to 10%
     of the value of the account in the fund at the time the withdrawal  plan is
     established);
o    The distribution is from any type of IRA, 403(b) or employer-sponsored plan
     and one of the following applies:
     -   It is part of a series of substantially equal periodic payments made
         over the life expectancy of the participant or the joint life
         expectancy of the participant and his or her  beneficiary  (limited  in
         any  year  to 10%  of the  value  of the participant's   account  at
         the  time  the   distribution   amount  is established);
     -   It is a required  minimum  distribution  due to the  attainment  of age
         70-1/2,  in which  case the  distribution  amount may exceed 10% (based
         solely on plan assets held in Pioneer mutual funds);


<PAGE>


    Buying, exchanging and selling shares





     -   It is rolled over to or reinvested in another  Pioneer fund in the same
         class of  shares,  which  will be  subject  to the  CDSC of the  shares
         originally held;
     -   It is in the form of a loan to a participant in a plan that permits
         loans (each repayment will be subject to a CDSC as though a new
         purchase);
o    The distribution is to a participant in an employer-sponsored  retirement
     plan qualified under section 401 of the Internal Revenue Code and is:
     -   A return of excess employee deferrals or contributions;
     -   A qualifying  hardship  distribution as defined by the Internal Revenue
         Code.  For Class B shares,  waiver is granted only on payments of up to
         10% of total plan assets held by Pioneer for all participants,  reduced
         by the total of any prior distributions made in that calendar year;
     -   Due to retirement or  termination  of  employment.  For Class B shares,
         waiver is granted  only on  payments  of up to 10% of total plan assets
         held in a Pioneer  mutual  fund for all  participants,  reduced  by the
         total of any prior distributions made in the same calendar year;
     -   From  a  qualified   defined   contribution   plan  and   represents  a
         participant's directed transfer,  provided that this privilege has been
         preauthorized  through a prior agreement with the distributor regarding
         participant directed transfers (not available to Class B shares);
o    The distribution is made pursuant to the fund's right to liquidate or
     involuntarily redeem shares in a shareholder's account;
o    The  selling  broker  elects,  with the  distributor's  approval,  to waive
     receipt of the commission normally paid at the time of the sale.


<PAGE>








Opening your account

If your shares are held in your investment firm's name, the options and services
available to you may be different from those discussed in this  prospectus.  Ask
your investment professional for more information.

Account options
Use your account  application to select options and privileges for your account.
You can  change  your  selections  at any time by  sending a  completed  account
options  form to the transfer  agent.  You may be required to obtain a signature
guarantee to make certain changes to an existing account.

Call or write to the fund's  transfer  agent for account  applications,  account
options forms and other account information:

Pioneering Services Corporation
P.O. Box 9014
Boston, Massachusetts 02205-9014
Telephone 1-800-225-6292

Telephone transaction privileges
If your account is registered in your name,  you can buy,  exchange or sell fund
shares  by  telephone.  If  you do not  want  your  account  to  have  telephone
transaction   privileges,   you  must  indicate  that  choice  on  your  account
application or by writing to the transfer agent.

When you request a telephone  transaction the transfer agent will try to confirm
that the request is genuine.  The transfer agent records the call,  requires the
caller to provide the personal  identification  number for the account and sends
you a written confirmation. The fund may implement other confirmation procedures
from time to time. Different procedures may apply if you have a non-U.S. account
or if your account is registered in the name of an institution, broker-dealer or
other third party.

[text box: telephone icon]
By phone
If you want to place your  telephone  transaction  by speaking  to a  shareowner
services  representative,  call  1-800-225-6292  between 8:00 a.m. and 9:00 p.m.
Eastern  time on any weekday that the New York Stock  Exchange is open.  You may
use FactFoneSM at any time. [end text box]


<PAGE>


Buying, exchanging and selling shares





General rules on buying, exchanging and selling your fund shares

Share price
If you place an order  with  your  investment  firm  before  the New York  Stock
Exchange  closes and your  investment  firm submits the order to the distributor
prior to the  distributor's  close of business (usually 5:30 p.m. Eastern time),
your share price will be calculated  that day.  Otherwise,  your price per share
will be  calculated  at the  close  of the New York  Stock  Exchange  after  the
distributor  receives  your  order.  Your  investment  firm is  responsible  for
submitting your order to the distributor.

Buying
You may buy fund shares from any investment firm that has a sales agreement with
the  distributor.   If  you  do  not  have  an  investment  firm,   please  call
1-800-225-6292  for  information on how to locate an investment  professional in
your area.

You can buy fund shares at the offering  price.  The  distributor may reject any
order until it has confirmed the order in writing and received payment. The fund
reserves the right to stop offering any class of shares.


Minimum investment amounts
Your initial investment must be at least  $1,000. Additional  investments must
be at least $100 for Class A shares and $500 for Class B or Class C shares.
You may qualify for lower initial or subsequent investment minimums if you are
opening a retirement plan account,  establishing  an automatic  investment plan
or placing your trade through your  investment  firm.


[text box]
Retirement plan accounts

You  can  purchase  fund  shares  through  tax-deferred   retirement  plans  for
individuals, businesses and tax-exempt organizations.

Your initial  investment  for most types of retirement  plan accounts must be at
least $250. Additional investments for most types of retirement plans must be at
least $100.

You  may not  use  the  account  application  accompanying  this  prospectus  to
establish a Pioneer retirement plan. You can obtain retirement plan applications
from your  investment  firm or by calling the  Retirement  Plans  Department  at
1-800-622-0176. [end text box]

[text box: questionmark icon]
Consult your investment  professional to learn more about buying,  exchanging or
selling fund shares. [end text box]


<PAGE>






Exchanging
You may exchange your shares for shares of the same class of another Pioneer
mutual fund.


Your  exchange  request  must be for at  least  $1,000  unless  the fund you are
exchanging  into has a different  minimum.  The fund allows you to exchange your
shares at net asset value  without  charging you either an initial or contingent
deferred sales charge at the time of the exchange. Shares you acquire as part of
an exchange will continue to be subject to any contingent  deferred sales charge
that applies to the shares you originally  purchased.  When you ultimately  sell
your shares,  the date of your original  purchase will determine your contingent
deferred sales charge.

Before you request an exchange,  consider each fund's  investment  objective and
policies as described in the fund's prospectus.

Selling
Your shares will be sold at net asset value per share next calculated  after the
fund receives your request in good order.

If the shares you are selling are subject to a deferred sales charge, it will be
deducted from the sale proceeds. The fund generally will send your sale proceeds
by check,  bank wire or  electronic  funds  transfer.  Normally you will be paid
within  seven days.  If you  recently  sent a check to purchase the shares being
sold,  the fund may delay  payment  of the sale  proceeds  until  your check has
cleared. This may take up to 15 calendar days from the purchase date.

If you are selling shares from a nonretirement  account or certain IRAs, you may
use any of the  methods  described  below.  If you  are  selling  shares  from a
retirement account other than an IRA, you must make your request in writing.

[text box]
Good order means that:
o    You have provided adequate instructions
o    There are no outstanding claims against your account
o    There are no transaction limitations on your account
o    If you have any fund share certificates, you submit them and they are
     signed by each record owner exactly as the shares are registered
o    Your  request  includes a signature  guarantee  if you:
     - Are selling  over $100,000 or exchanging over $500,000 worth of shares
     - Changed your account registration or address within the last 30 days
     - Instruct  the  transfer  agent to mail the check to an address  different
       from the one on your  account
     - Want the check paid to  someone  other than the  account  owner(s)
     - Are  transferring  the sale  proceeds to a Pioneer
       mutual fund account with a different registration
[end text box]

[text box: capital icon]
You may have to pay federal income taxes on a sale or an exchange.
[end text box]


<PAGE>


Buying, exchanging and selling shares





Buying shares
Exchanging shares

Through your investment firm
Normally,  your  investment  firm will send your purchase  request to the fund's
transfer agent. Consult your investment professional for more information.  Your
investment  firm may receive a commission from the distributor for your purchase
of  fund  shares.   The   distributor  or  its  affiliates  may  pay  additional
compensation,  out of their own  assets,  to certain  investment  firms or their
affiliates based on objective criteria established by the distributor.

Normally,  your  investment  firm will send your exchange  request to the fund's
transfer agent. Consult your investment  professional for more information about
exchanging your shares.

By phone
You  can  use  the  telephone   purchase  privilege  if  you  have  an  existing
non-retirement  account or certain IRAs. You can purchase additional fund shares
by phone if:
o    You  established  your bank  account of record at least 30 days ago
o    Your bank information has not changed for at least 30 days
o    You are not purchasing more than  $25,000  worth of shares per  account
     per day
o    You can provide the proper account identification information

When you request a telephone  purchase,  the transfer agent will  electronically
debit the amount of the purchase from your bank account of record.  The transfer
agent will  purchase  fund  shares  for the amount of the debit at the  offering
price  determined  after the transfer  agent  receives your  telephone  purchase
instruction  and good  funds.  It  usually  takes  three  business  days for the
transfer  agent to  receive  notification  from your  bank  that good  funds are
available  in the  amount  of your  investment.  After you  establish  your fund
account,  you can  exchange  fund  shares  by phone  if:
o    You are using the exchange to establish a new account, provided the new
     account has a registration identical to the original account
o    The fund into which you are  exchanging  offers the same class of shares
o    You are not  exchanging  more than $500,000  worth of shares per
     account per day
o    You can provide the proper account identification information


In writing, by mail or by fax
You can purchase  fund shares for an existing fund account by mailing a check to
the transfer  agent.  Make your check payable to the fund.  Neither  initial nor
subsequent  investments  should be made by third party check. Your check must be
in U.S.  dollars and drawn on a U.S. bank.  Include in your purchase request the
fund's  name,  the  account  number  and  the  name  or  names  in  the  account
registration.  You can  exchange  fund  shares by  mailing or faxing a letter of
instruction to the transfer agent. You can exchange fund shares directly through
the fund only if your account is registered in your name.  However,  you may not
fax an exchange request for more than $500,000.  Include in your letter:
o    The name,  social  security  number and signature of all  registered
     owners
o    A signature  guarantee for each registered  owner if the amount of the
     exchange is more than $500,000
o    The name of the fund out of which you are  exchanging and the name of the
     fund into which you are exchanging
o    The class of shares you are exchanging
o    The dollar amount or number of shares you are exchanging



<PAGE>








Selling shares
Normally,  your  investment  firm will send your  request to sell  shares to the
fund's  transfer  agent.   Consult  your   investment   professional   for  more
information.  The fund has authorized the distributor to act as its agent in the
repurchase of fund shares from qualified investment firms. The fund reserves the
right to terminate this procedure at any time.

You may sell up to $100,000  per account per day.  You may sell fund shares held
in a retirement plan account by phone only if your account is an IRA.You may not
sell your shares by phone if you have  changed your address (for checks) or your
bank information (for wires and transfers) in the last 30 days.

You may receive your sale proceeds:

o   By check,  provided  the check is made  payable  exactly as your  account is
    registered
o   By bank wire or by electronic  funds transfer,  provided the sale proceeds
    are being sent to your bank address of record

You can sell some or all of your fund  shares by  writing  directly  to the fund
only if your account is  registered  in your name.  Include in your request your
name, the fund's name,  your social security  number,  your fund account number,
the class of shares to be sold, the dollar amount or number of shares to be sold
and any other  applicable  requirements as described  below.  The transfer agent
will send the sale  proceeds to your address of record  unless you provide other
instructions.  Your  request must be signed by all  registered  owners and be in
good  order.  The  transfer  agent will not  process  your  request  until it is
received in good order.

You may not sell more than $100,000 per account per day by fax.

[text box]
How to contact us

By phone [telephone icon]
For information or to request a telephone transaction between 8:00 a.m. and 9:00
p.m. (Eastern time) by speaking with a shareholder services  representative call
1-800-225-6292  To request a transaction  using  FactFoneSM call  1-800-225-4321
Telecommunications Device for the Deaf (TDD) 1-800-225-1997

By mail [graphic icon: envelope]
Send your written instructions to:
Pioneering Services Corporation
P.O. Box 9014
Boston, Massachusetts 02205-9014

By fax [graphic icon: fax machine]
Fax your exchange and sale requests to:
1-800-225-4240
[end text box]

[text box]
Exchange privilege
You may make up to four exchange redemptions of $25,000 or more per account per
calendar year.

The fund and the  distributor  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.
Abuses include  frequent trading in response to short-term market  fluctuations
and a pattern of trading  that appears to be an attempt to "time the market."
In addition,  the fund and the distributor reserve the right, at any time
without notice, to charge a fee for exchanges or to modify, limit or
suspend the exchange privilege. The fund will provide 60 days' notice of
material amendments to or termination of the privilege. [end text box]


<PAGE>


Buying, exchanging and selling shares





Account options
See the  account  application  form for more  details  on each of the  following
options.

Automatic investment plans
You can make regular periodic investments in the fund by setting up monthly bank
drafts,  government  allotments,  payroll deduction, a Pioneer Investomatic Plan
and  other  similar  automatic  investment  plans.  You  may  use  an  automatic
investment  plan to  establish  a Class A  share  account  with a small  initial
investment.  If you have a Class B or Class C share  account and your balance is
at least $1,000, you may establish an automatic investment plan.

Pioneer Investomatic Plan
If you establish a Pioneer  Investomatic  Plan,  the transfer  agent will make a
periodic investment in fund shares by means of a preauthorized  electronic funds
transfer from your bank account.  Your plan  investments are voluntary.  You may
discontinue your plan at any time or change the plan's dollar amount,  frequency
or investment date by calling or writing to the transfer agent. You should allow
up to 30 days for the transfer agent to establish your plan.

Automatic exchanges
You can automatically  exchange your fund shares for shares of the same class of
another  Pioneer mutual fund.  The automatic  exchange will begin on the day you
select when you complete the appropriate  section of your account application or
an account options form. In order to use automatic exchange:
o    You must select exchanges on a monthly or quarterly basis
o    Both the originating and receiving accounts must have identical
     registrations
o    The  originating  account has a minimum balance of $5,000

Distribution options
The  fund  offers  three  distribution  options.  Any  fund  shares  you  buy by
reinvesting  distributions  will be priced at the applicable net asset value per
share.

(1)      Unless you indicate  another  option on your account  application,  any
         dividends and capital gain  distributions  paid to you by the fund will
         automatically be invested in additional fund shares.

(2)      You may elect to have the amount of any dividends paid to you in cash
         and any capital gain distributions reinvested in additional shares.

(3)      You may elect to have the full amount of any dividends and/or capital
         gain distributions paid to you in cash.

Options (2) or (3) are not  available to  retirement  plan  accounts or accounts
with a current value of less than $500.

If your distribution  check is returned to the transfer agent or you do not cash
the check for six months or more,  the transfer agent may reinvest the amount of
the check in your account and  automatically  change the distribution  option on
your  account to option (1) until you  request a  different  option in  writing.
These additional shares will be purchased at the then current net asset value.


<PAGE>








Directed dividends
You can invest the dividends paid by one of your Pioneer mutual fund accounts in
a second Pioneer  mutual fund account.  The value of your second account must be
at least  $1,000  ($500 for  Pioneer  Fund or  Pioneer  II).  You may direct the
investment of any amount of dividends. There are no fees or charges for directed
dividends.  If you have a retirement plan account, you may only direct dividends
to accounts with identical registrations.

Systematic withdrawal plans
When you establish a systematic  withdrawal plan for your account,  the transfer
agent will sell the number of fund  shares you  specify on a periodic  basis and
the proceeds will be paid to you or to any person you select.  You must obtain a
signature  guarantee  to  direct  payments  to  another  person  after  you have
established  your  systematic  withdrawal  plan.  Payments can be made either by
check or by electronic transfer to a bank account you designate.

To establish a systematic withdrawal plan:
o Your account must have a total value of at least  $10,000 when you establish
  your plan
o You must request a periodic withdrawal of at least $50
o You may not request a periodic  withdrawal  of more than 10% of the value of
  any Class B or Class C share account (valued at the time the plan is
  implemented)

Systematic  sales of fund  shares may be taxable  transactions  for you.  If you
purchase Class A shares while you are making  systematic  withdrawals  from your
account, you may pay unnecessary sales charges.

Direct deposit
If you elect to take  dividends or dividends and capital gain  distributions  in
cash, or if you establish a systematic  withdrawal  plan, you may choose to have
those cash payments deposited  directly into your savings,  checking or NOW bank
account.

Voluntary tax withholding
You may have the transfer  agent  withhold 28% of the dividends and capital gain
distributions  paid from your fund account (before any reinvestment) and forward
the amount  withheld to the Internal  Revenue  Service as a credit  against your
federal income taxes.  Voluntary tax withholding is not available for retirement
plan accounts or for accounts subject to backup withholding.

Reinstatement privilege for Class A shares
You may qualify for the reinstatement privilege if you recently sold all or part
of your Class A shares.


<PAGE>


Buying, exchanging and selling shares





Shareowner services

FactFoneSM 1-800-225-4321 You can use FactFoneSM to:
o   Obtain current  information on your Pioneer mutual fund accounts
o   Inquire about the prices and yields of all publicly  available  Pioneer
    mutual funds
o   Make computer-assisted  telephone purchases,  exchanges and redemptions for
    your fund accounts
o   Request account statements

If you plan to use FactFoneSM to make telephone purchases and redemptions, first
you must activate your personal  identification  number and establish  your bank
account of record.  If your account is registered in the name of a broker-dealer
or other third party, you may not be able to use FactFoneSM.

Confirmation statements
The transfer agent  maintains an account for each  investment firm or individual
shareowner and records all account  transactions.  You will be sent confirmation
statements  showing  the  details of your  transactions  as they  occur,  except
automatic investment plan transactions,  which are confirmed  quarterly.  If you
have more than one Pioneer  mutual fund  account  registered  in your name,  the
Pioneer combined account statement will be mailed to you each quarter.

Tax information
In January of each year, the fund will mail you information about the tax status
of the dividends and distributions paid to you by the fund.

Pioneer website
www.pioneerfunds.com
The website  includes a full selection of information on mutual fund  investing.
You can also use the website to get:
o     Your current  account  information
o     Prices,  returns and yields of all publicly  available  Pioneer
      mutual funds
o     Prospectuses for all the Pioneer funds

TDD  1-800-225-1997
If you have a hearing disability and access to TDD keyboard  equipment,  you can
contact our  telephone  representatives  with  questions  about your  account by
calling our TDD number between 8:30 a.m. and 5:30 p.m. Eastern time any weekday
that the New York Stock Exchange is open.


<PAGE>








Shareowner account policies

Signature  guarantees  and  other  requirements  You are  required  to  obtain a
signature  guarantee when you are:
o   Requesting  certain types of exchanges or sales of fund shares
o   Redeeming shares for which you hold a share certificate
o   Requesting certain types of changes for your existing account

You can obtain a signature  guarantee from most  broker-dealers,  banks,  credit
unions  (if   authorized   under  state  law)  and  federal   savings  and  loan
associations. You cannot obtain a signature guarantee from a notary public.

Fiduciaries and corporations are required to submit additional documents to sell
fund shares.

Exchange limitation
The fund's exchange limitation is intended to discourage short-term trading in
fund shares.  Short-term trading can increase the expenses incurred by the fund
and make portfolio management less efficient. In determining whether the
exchange redemption limit has been reached, Pioneer may aggregate a series of
exchanges (each valued at less than $25,000) and/or fund accounts that appear
to be under common ownership or control.  Pioneer may view accounts for which
one person gives instructions or accounts that act on advice provided by a
single source to be under common control.

The exchange limitation does not apply to automatic exchange transactions or to
exchanges made by participants in employer-sponsored retirement plans qualified
under Section 401 of the Internal Revenue Code.  The exchange limitation may not
apply to transactions made through an omnibus account for fund shares.

Minimum account size
The fund requires that you maintain a minimum account value of $500. If you hold
less than the minimum in your account because you have sold or exchanged some of
your  shares,  the fund will  notify you of its  intent to sell your  shares and
close your account.  You may avoid this by increasing  the value of your account
to at least the minimum within six months of the notice from the fund.

Telephone access
You may have difficulty  contacting the fund by telephone during times of market
volatility or disruption  in telephone  service.  If you are unable to reach the
fund by telephone, you should communicate with the fund in writing.


[text box: magnifyer icon]
You may make up to four exchange redemptions of $25,000 or more per
account per calendar year out of the fund.  Except as noted, you may make any
number of exchanges of less than $25,000.
[end text box]



Share certificates
Normally,  your  shares  will  remain on  deposit  with the  transfer  agent and
certificates  will  not be  issued.  If you are  legally  required  to  obtain a
certificate,  you may  request  one for your Class A shares  only.  A fee may be
charged for this service.

Other policies
The fund may suspend  transactions  in shares when trading on the New York Stock
Exchange  is  closed or  restricted,  when an  emergency  exists  that  makes it
impracticable for the fund to sell or value its portfolio securities or with the
permission of the Securities and Exchange Commission.

The fund or the distributor may revise, suspend or terminate the account options
and services available to shareowners at any time.


The fund reserves the right to redeem in kind by delivering portfolio securities
to a redeeming  shareowner,  provided that the fund must pay redemptions in cash
if a  shareowner's  aggregate  redemptions  in a 90-day  period  are  less  than
$250,000 or 1% of the fund's net assets.




<PAGE>


Dividends, capital gains and taxes







Dividends and capital gains
The fund generally pays distributions of net short- and long-term
capital gains in November.  The fund generally pays dividends from any net
investment income in December.The fund may also pay dividends and distributions
at other times if necessary for the fund to avoid federal  income or excise tax.
If you  invest in the fund  close to the time that the fund  makes a capital
gains distribution,  generally  you will pay a higher price per share and you
will pay taxes on the amount of the capital gains  distribution  whether you
reinvest the distribution or receive it as cash.



Taxes
For  federal  income  tax  purposes,  your  distributions  from the  fund's  net
long-term  capital  gains  are  considered  long-term  capital  gains and may be
taxable to you at different  maximum rates depending upon their source and other
factors.  Dividends and  short-term  capital gain  distributions  are taxable as
ordinary  income.  Dividends  and  distributions  are taxable,  whether you take
payment in cash or reinvest  them to buy  additional  fund shares.  You may also
have tax  consequences  (generally,  a  capital  gain or loss)  when you sell or
exchange fund shares. Each year the fund will mail to you information about your
dividends  and  distributions  for,  and the shares  you sold in,  the  previous
calendar year.


You must provide your social  security  number or other taxpayer  identification
number  to the fund  along  with the  certifications  required  by the  Internal
Revenue  Service  when you open an account.  If you do not or if it is otherwise
legally  required to do so, the fund will withhold 31% "backup  withholding" tax
from your dividends and distributions,  sale proceeds and any other payments to
you.


You  should  ask  your  own  tax   adviser   about  any  federal  or  state  tax
considerations,  including  possible  additional  withholding taxes for non-U.S.
shareholders.   You  may  also  consult  the  fund's   statement  of  additional
information for a more detailed  discussion of federal income tax considerations
that may affect the fund and its shareowners.

[text box: capital icon]
Sales and exchanges may be taxable transactions to shareowners.
[end text box]










Pioneer
Tax-Managed Fund


You can obtain more free information about the fund from your investment firm or
by  writing  to  Pioneering  Services  Corporation,  60  State  Street,  Boston,
Massachusetts 02109. You may also call 1-800-225-6292.

Shareowner reports
Annual and  semiannual  reports to  shareowners  provide  information  about the
fund's investments. The annual report discusses market conditions and investment
strategies that  significantly  affected the fund's  performance during its last
fiscal year.

Statement of additional information
The statement of additional information provides more detailed information about
the fund. It is incorporated by reference into this prospectus.

Visit our website
www.pioneerfunds.com


You can also review the fund's shareowner reports, prospectus and statement
of additional information at the Commission's Public Reference Room in
Washington, D.C.  Call 1-202-942-8090 for information. The Commission charges a
fee for copies. You can get the same information free from the Commission's
EDGAR database on the Internet (http://www.sec.gov).  You may also e-mail
requests for these documents to [email protected] or make a request in writing
to the Commission's Public Reference Section, Washington, D.C. 20549-0102.



(Investment Company Act file no. 811-09585)









[Pioneer
logo]  Pioneer Funds Distributor, Inc.
       60 State Street
       Boston, MA 02109                                   7288-00-1199
       www.pioneerfunds.com     (C) Pioneer Funds Distributor, Inc.
<PAGE>





                                                         [Pioneer logo]












PIONEER
TAX-MANAGED FUND





                                                               CLASS Y SHARES
                                                Prospectus, November 18, 1999

















                              CONTENTS


                              Basic  information  about the fund 1
                              Management 6
                              Buying, exchanging and selling shares 7
                              Dividends, capital gains and taxes 16





Neither the Securities and Exchange  Commission nor any state securities  agency
has approved the fund's shares or determined whether this prospectus is accurate
or complete. Any representation to the contrary is a crime.


<PAGE>




















[text box]
AN INVESTMENT IN THE FUND IS NOT A BANK DEPOSIT AND IS NOT INSURED OR GUARANTEED
BY THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY OTHER GOVERNMENT AGENCY.
[end text box]

[text box]
CONTACT YOUR INVESTMENT PROFESSIONAL TO DISCUSS HOW THE FUND FITS INTO YOUR
PORTFOLIO.
[end text box]


<PAGE>


BASIC INFORMATION ABOUT THE FUND





INVESTMENT OBJECTIVE Long-term capital growth.

PRINCIPAL INVESTMENT STRATEGIES
Normally,  the fund  invests  at least 65% of its  assets in equity  securities,
primarily  of U.S.  issuers.  For  purposes of the fund's  investment  policies,
equity securities include common and preferred stocks,  warrants and convertible
debt securities.


Pioneer Investment Management, Inc., the fund's investment adviser, uses a value
approach to select the fund's investments.  Using this investment style, Pioneer
seeks securities selling at reasonable prices or substantial  discounts to their
underlying  values  and then holds  these  securities  until the  market  values
reflect their intrinsic values.  Pioneer evaluates a security's  potential value
based on the company's assets and prospects for earnings growth.  In making that
assessment,  Pioneer  employs  due diligence and fundamental research, an
evaluation of the issuer based on its financial statements and operations.
Pioneer relies  on the  knowledge,  experience  and  judgment  of its own staff
who have access to a wide variety of research. Pioneer focuses on the quality
and price of individual issuers,  not on economic sector or  market-timing
strategies.
Factors Pioneer looks for in selecting investments include:
o   Favorable expected returns relative to perceived risk
o   Above average potential for earnings and revenue growth
o   Low market valuations  relative to earnings forecast,  book value, cash flow
    and  sales
o   A  sustainable  competitive  advantage,  such as a brand  name,
    customer base, proprietary technology or economies of scale






[begin sidebar]
- -----------------------------------------------------------------------
[graphic icon: magnifying glass]

TAX-MANAGED INVESTING
The fund  seeks to  minimize  the impact of  federal  income tax on  shareholder
returns.
- -----------------------------------------------------------------------
[end sidebar]



TAX MANAGEMENT STRATEGIES
The fund will use various strategies including:
o    Investing primarily in capital growth-oriented stocks with no or a low
     dividend yield.  These stocks tend to generate lower current taxable income
     than most fixed income securities and high-dividend stocks
o    Avoiding sales of appreciated securities that result in capital gain,
     except where there are compelling investment reasons for the sale
o    Selling securities to realize capital losses that offset capital gains that
     have or are expected to be recognized
o    When selling a security,  focusing on the highest cost lot of that security
     first (which  reduces the capital gain or increases  the loss  realized by
     the  fund).  The  fund  will  also  consider  the  short-term  or
     long-term characterization  of a gain or loss and will  attempt to offset
     short-term gains with short-term losses




<PAGE>



PRINCIPAL RISKS OF INVESTING IN THE FUND
Even though the fund seeks reasonable income and capital growth,  you could lose
money on your  investment  or not make as much as if you invested  elsewhere if:
o   The stock  market goes down (this risk may be greater in the short term)
o   Value  stocks  fall out of favor with  investors
o   The fund's  assets  remain undervalued or do not have the potential
    value originally expected

The fund uses tax  management  strategies  with the  objective  of reducing  the
amount of  distributions  subject to federal  taxation.  However,  Pioneer  will
follow tax  management  strategies  only to the extent that they do not conflict
with the fund's goal of capital  growth or the  operation of the fund.  The fund
may realize a short-term gain on the sale of a security:  o if Pioneer  believes
it will  decline in value o to increase  diversification  o to raise cash to pay
expenses or meet redemption requests.

In addition,  some  securities in the fund's  portfolio will regularly  generate
taxable income.  At times,  tax-managed funds are more volatile than other funds
because they tend to hold stocks longer to avoid realizing gain due to portfolio
turnover.  In addition,  compared to  traditionally  managed  mutual funds,  the
tax-managed  strategies  may cause a higher  percentage  of the fund's net asset
value to be represented by unrealized capital  appreciation,  which represents a
potential future tax liability to shareholders.


<PAGE>


THE FUND'S PERFORMANCE
Since  the  fund is  newly  organized,  it does  not  disclose  any  performance
information.   The  fund's  performance  will  vary  from  year  to  year.  Past
performance does not necessarily indicate how a fund will perform in the future.
As a shareowner, you may lose or make money on your investment.

FEES AND EXPENSES
These are the fees and  expenses,  based on  estimated  expenses for the current
fiscal year, you may pay if you invest in the fund.

SHAREOWNER FEES
PAID DIRECTLY FROM YOUR INVESTMENT                    CLASS Y
- -------------------------------------------------------------

Maximum sales charge (load) when you buy shares          None


Maximum deferred sales charge (load)                     None
- -------------------------------------------------------------


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

ANNUAL FUND OPERATING EXPENSES
PAID FROM THE ASSETS OF THE FUND
as a percentage of average daily net assets           CLASS Y
- -------------------------------------------------------------


   Management Fee(1)                                    0.75%
 .............................................................
   Distribution and Service (12b-1) Fee                 0.00%
 .............................................................
   Other Expenses(1)                                    0.99%
 .............................................................
Total Annual Fund Operating Expenses(1)                 1.74%
- -------------------------------------------------------------
- -----------------------------------------------------------------------


(1) Pioneer has agreed not to impose all or a portion of its management fee and,
if necessary, to limit other  operating  expenses of the fund to the extent
required to reduce Class A expenses to 1.75% of the average daily net assets
attributable to Class A shares; the portion of fund expenses attributable to
Class Y shares will be reduced only to the extent such expenses are reduced for
Class A shares.  This  agreement is voluntary  and temporary and may be revised
or terminated at any time.

<TABLE>


                                            Class Y
     <S>                                    <C>
     Management Fees                        0.51%
     Other Expenses                         0.99%
     Total Annual Fund Operating Expenses   1.50%

</TABLE>

EXAMPLE
This example helps you compare the costs of investing in the fund with the cost
of investing in other mutual funds. It assumes that: a) you invest $10,000 in
the fund for the time periods shown, b) you reinvest all dividends and
distributions, c) your investment has a 5% return each year and d) the fund's
operating expenses remain the same.

Although your actual costs may be higher or lower,  under these assumptions your
costs would be:


                               NUMBER OF YEARS YOU OWN YOUR SHARES
                               -----------------------------------
                                            1        3
- -------------------------------------------------------------
Class Y                                   $177     $548
- -------------------------------------------------------------



<PAGE>


BASIC INFORMATION ABOUT THE FUND





OTHER INVESTMENT STRATEGIES
As discussed, the fund invests primarily in equity securities of U.S. companies
to seek long-term capital growth.

This  section  describes  additional  investments  that  the  fund  may  make or
strategies  that it may pursue to a lesser  degree to achieve  the fund's  goal.
Some of the fund's  secondary  investment  policies also entail risks.  To learn
more about these investments and risks, you should obtain and read the statement
of additional information (SAI).


INVESTMENTS OTHER THAN U.S. EQUITY SECURITIES
The fund may invest up to 10% of its total  assets (at the time of  purchase) in
equity securities of non-U.S. corporate issuers and debt  securities of non-U.S.
corporate and government issuers.  The fund will not invest more
than 5% of its total  assets  (at the time of  purchase)  in the  securities  of
emerging markets issuers.  The fund invests in non-U.S.  securities to diversify
its  portfolio  when  they  offer  similar  or  greater  potential  for  capital
appreciation  compared to U.S.  securities.  Investing  in non-U.S.  issuers may
involve unique risks compared to investing in securities of U.S. issuers.




The fund may invest the balance of its assets in debt  securities  of  U.S.
corporate and government issuers.  Generally the fund may acquire debt
securities that are investment  grade,  but the fund may  invest up to 5% of its
total  assets (at the time of purchase) in lower quality debt securities
including  convertible  debt securities.  The fund invests in debt securities
when Pioneer  believes they are consistent  with the fund's  investment
objective  and offer the  potential for capital growth, to diversify the fund'
portfolio or for greater liquidity.




Debt  securities  are  subject  to the  risk of an  issuer's  inability  to meet
principal or interest payments on its obligations. Factors that could contribute
to a decline  in the market  value of debt  securities  in the fund's  portfolio
include rising  interest rates or a reduction in the perceived  creditworthiness
of the issuer of the  securities.  A debt security is investment  grade if it is
rated in one of the top four  categories by a  nationally recognized  securities
rating organization or determined to be of equivalent credit quality by Pioneer.
Debt securities rated below  investment grade are commonly  referred to as "junk
bonds" and are considered  speculative.  Below  investment grade debt securities
involve  greater risk of loss,  are subject to greater price  volatility and are
less liquid,  especially during periods of economic  uncertainty or change, than
higher-quality debt securities.


TEMPORARY INVESTMENTS
Normally,  the  fund  invests  substantially  all  of its  assets  to  meet  its
investment  objective.  The fund may  invest  the  remainder  of its  assets  in
securities with a remaining  maturity of less than one year, cash equivalents or
may hold cash. For temporary  defensive  purposes,  the fund may depart from its
principal  investment  strategies  and invest part or all of its assets in these
securities.  During  such  periods,  the  fund  may not be able to  achieve  its
investment  objective.  The fund intends to adopt a defensive strategy only when
Pioneer  believes  common  stocks have  extraordinary  risks due to political or
economic factors.



<PAGE>








DERIVATIVES
The fund may use  futures,  options and other  derivatives.  A  derivative  is a
security or  instrument  whose value is  determined by reference to the value or
the  change in value of one or more  securities,  currencies,  indices  or other
financial instruments. The fund does not use derivatives as a primary investment
technique and generally limits their use to hedging.  However,  the fund may use
derivatives for a variety of purposes, including:
o   As a hedge against adverse changes in stock market prices, interest rates
    or currency exchange rates
o   As a substitute  for  purchasing or selling  securities
o   To increase the fund's return as a non-hedging strategy that
    may be considered speculative

Even a small  investment in  derivatives  can have a  significant  impact on the
fund's  exposure to stock market  values,  interest  rates or currency  exchange
rates.  If changes in a  derivative's  value do not correspond to changes in the
value of the fund's other  investments,  the fund may not fully  benefit from or
could lose money on the  derivative  position.  In  addition,  some  derivatives
involve  risk of loss if the person who issued the  derivative  defaults  on its
obligation. Certain derivatives may be less liquid and more difficult to value.


<PAGE>


MANAGEMENT





PIONEER, THE FUND'S INVESTMENT ADVISER,
selects the fund's investments and oversees the fund's operations[.]


PIONEER GROUP
The Pioneer Group,  Inc. and its subsidiaries are engaged in financial  services
businesses in the United States and many foreign  countries.  As of December 31,
1998,  the firm had more than $23 billion in assets under  management  worldwide
including  more than $22 billion in U.S.  mutual funds.  The firm's U.S.  mutual
fund investment  history  includes  creating in 1928, one of the first
mutual funds. John F. Cogan,  chairman of the board and president of The Pioneer
Group,  Inc.,  owns  approximately  14% of the firm.  He is also an officer  and
director of each of the Pioneer mutual funds.


INVESTMENT ADVISER
Pioneer manages a family of U.S. and  international  stock funds, bond funds and
money market funds.  Pioneer is a subsidiary of The Pioneer Group, Inc. Its main
office is at 60 State Street, Boston, Massachusetts 02109.


PORTFOLIO MANAGER
Day-to-day  management of the fund's portfolio is the  responsibility of John A.
Carey. Mr. Carey is a senior vice president of Pioneer. He joined Pioneer in
1979 as an analyst and has been acting as a portfolio manager since 1986.


Mr.  Carey  is  supported  by a team of  portfolio  managers  and  analysts  who
specialize in U.S. equity  securities.  This team provides research for the fund
and other Pioneer mutual funds with similar investment objectives or styles. Mr.
Carey and his team operate under the  supervision  of Theresa A.  Hamacher.  Ms.
Hamacher is chief investment officer of Pioneer.  She joined Pioneer in 1997 and
has  been  an  investment  professional  since  1984,  most  recently  as  chief
investment officer at another investment adviser.


<PAGE>










MANAGEMENT FEE
The fund  pays  Pioneer  a fee for  managing  the fund and to cover  the cost of
providing  certain  services to the fund.  Pioneer's  annual fee is 0.75% of the
fund's  average  daily net  assets up to $1 billion and 0.70% of the assets over
$1 billion.  The fee is normally computed daily and paid monthly.



DISTRIBUTOR AND TRANSFER AGENT
Pioneer Funds Distributor,  Inc. is the fund's distributor.  Pioneering Services
Corporation is the fund's transfer agent.  The fund  compensates the distributor
and transfer agent for their  services.  The  distributor and the transfer agent
are subsidiaries of The Pioneer Group, Inc.


Year 2000
Information technology experts are concerned about computer and other electronic
systems'  ability to process  date-related  information  on and after January 1,
2000. This scenario, commonly referred to as the "Year 2000 problem," could have
an adverse impact on the fund and the provision of services to its  shareowners.
Pioneer is addressing  the Year 2000  problem  with  respect to its systems and
those used by the distributor and transfer agent. During 1999, Pioneer finished
addressing all material Year 2000 issues and participated in industry-wide
testing.  The fund has obtained assurances from its other service providers
that they have taken appropriate Year 2000  measures and Pioneer continues to
monitor their  efforts.  Although  the fund  does not  expect  the Year 2000
problem to adversely  impact it, the fund cannot  guarantee  that its,  or the
fund's service providers', efforts will be successful.




<PAGE>


BUYING, EXCHANGING AND SELLING SHARES





NET ASSET VALUE

The fund's net asset value is the value of its portfolio of securities  plus any
other assets minus its operating  expenses and any other  liabilities.  The fund
calculates  a net asset  value for each  class of shares  every day the New York
Stock Exchange is open when regular trading closes  (normally 4:00 p.m.  Eastern
time).

The fund  generally  values its portfolio  securities  based on market prices or
quotations. When market prices are not available or are considered by Pioneer to
be unreliable,  the fund may use an asset's fair value. Fair value is determined
in accordance with  procedures  approved by the fund's  trustees.  International
securities  markets may be open on days when the U.S.  markets  are closed.  For
this reason, the values of any international  securities owned by the fund could
change on a day when you cannot buy or sell shares of the fund.

You buy or sell Class Y shares at the net asset  value per share  calculated  on
the day of your transaction.

DISTRIBUTION OF CLASS Y SHARES

The distributor  incurs the expenses of distributing  the fund's Class Y shares,
none of which are reimbursed or paid for by the fund or the Class Y shareowners.
Distribution  expenses  include  fees paid to  broker-dealers  which  have sales
agreements with the distributor and other parties,  advertising expenses and the
cost of printing and mailing prospectuses to potential investors.


The  distributor or its affiliates may make payments out of their own resources
to dealers and other persons who  distribute  Class Y shares.  Such payments
may be based  upon the  value  of  Class Y shares  sold.  The  distributor  may
impose conditions on the payment of such fees.



<PAGE>








OPENING YOUR ACCOUNT

If you are an individual or other non-institutional  investor, open your Class Y
share  account  by  completing  an  account  application  and  sending it to the
transfer agent by mail or by fax. If you are any other type of investor,  please
call the  transfer  agent to obtain a Class Y share  account  set-up  kit and an
account number.

The transfer  agent must receive your account  application  before you send your
initial check or federal  funds wire. In addition,  you must provide a bank wire
address of record when you establish your account.

If your shares are held in your investment firm's name, the options and services
available to you may be different from those discussed in this  prospectus.  Ask
your investment professional for more information.

ACCOUNT OPTIONS
Use your account  application to select options and privileges for your account.
You can  change  your  selections  at any time by  sending a  completed  account
options  form to the transfer  agent.  You may be required to obtain a signature
guarantee to make certain changes to an existing account.

Call or write to the fund's  transfer  agent for account  applications,  account
options forms and other account information:

PIONEERING SERVICES CORPORATION
P.O. Box 9014
Boston, Massachusetts 02205-9014
Telephone 1-888-294-4480

TELEPHONE TRANSACTION PRIVILEGES
If your  account is  registered  in your name,  you can exchange or sell Class Y
shares  by  telephone.  If  you do not  want  your  account  to  have  telephone
transaction   privileges,   you  must  indicate  that  choice  on  your  account
application or by writing to the transfer agent.

When you request a telephone  transaction the transfer agent will try to confirm
that the request is genuine.  The transfer agent records the call,  requires the
caller to provide the personal  identification  number for the account and sends
you a written confirmation. The fund may implement other confirmation procedures
from time to time. Different procedures may apply if you have a non-U.S. account
or if your account is registered in the name of an institution, broker-dealer or
other third party.

[text box: telephone icon]
BY PHONE
If you want to place your  telephone  transaction  by speaking  to a  shareowner
services  representative,  call  1-888-294-4480  between 9:00 a.m. and 6:00 p.m.
Eastern time on any weekday that the New York Stock Exchange is open.  [end text
box]


<PAGE>


BUYING, EXCHANGING AND SELLING SHARES





GENERAL RULES ON BUYING, EXCHANGING AND SELLING YOUR FUND SHARES

SHARE PRICE
When you place an order to purchase,  exchange or sell Class Y shares it must be
received in good order by the  transfer  agent or by your  broker-dealer  by the
close of regular  trading on the New York Stock  Exchange  (currently  4:00 p.m.
Eastern time) in order to purchase shares at the price determined on that day.

If you place your order through a broker-dealer, you must place the order before
the  close  of  regular  trading  on  the  New  York  Stock  Exchange  and  your
broker-dealer   must  submit  the  order  to  the   distributor   prior  to  the
distributor's  close of business (usually 5:30 p.m. Eastern time) for your share
price to be determined at the close of regular trading on the date your order is
received.  Your  broker-dealer is responsible for transmitting your order to the
distributor.  In all other cases except as described  below for wire  transfers,
your share price will be calculated at the close of the New York Stock  Exchange
after the distributor receives your order.

BUYING
You can buy  Class Y shares  at net asset  value  per  share.  The fund does not
impose any initial,  contingent  deferred or asset based sales charge on Class Y
shares.  The  distributor  may reject  any order  until it has  confirmed  it in
writing and received payment.

MINIMUM INVESTMENT AMOUNT
Your initial Class Y share  investment must be at least $5 million.  This amount
may be invested in one or more of the Pioneer mutual funds that currently  offer
Class Y shares. There is no minimum additional investment amount.

WAIVERS OF THE MINIMUM INVESTMENT AMOUNT
The fund will accept an initial investment of less than $5 million if:

(a)      The  investment  is made by a trust  company or bank  trust  department
         which is initially  investing at least $1 million in any of the Pioneer
         mutual funds and, at the time of the purchase,  such assets are held in
         a fiduciary,  advisory,  custodial or similar  capacity  over which the
         trust company or bank trust  department  has full or shared  investment
         discretion; or

(b)      The investment is made by an  employer-sponsored  retirement  plan that
         meets the  requirements  of Sections  401,  403 or 457 of the  Internal
         Revenue Code,  provided  that[ ]the number of employees  covered by the
         plan is 5,000 or more,  or the plan has assets of $25  million or more;
         or

(c)      The  investment  is at least $1  million in any of the  Pioneer  mutual
         funds and the purchaser is an insurance company separate account; or

(d)      The  investment  is  made  by  an  employer-sponsored  retirement  plan
         established for the benefit of (1) employees of The Pioneer Group, Inc.
         or employees of its  affiliates,  or (2) employees or the affiliates of
         broker-dealers  who  have a Class Y  shares  sales  agreement  with the
         distributor.


<PAGE>








EXCHANGING
You may exchange  your Class Y shares for the Class Y shares of another  Pioneer
mutual fund.

Your  exchange  request  must be for at  least  $1,000  unless  the fund you are
exchanging  into has a different  minimum.  The fund allows you to exchange your
Class Y shares at net asset  value  without  charging  you  either an initial or
contingent deferred sales charge.

Before you request an exchange,  consider each fund's  investment  objective and
policies as described in the fund's prospectus.

SELLING
Your Class Y shares  will be sold at net asset  value per share next  calculated
after the fund receives your request in good order. If a signature  guarantee is
required, you must submit your request in writing.

The fund  generally  will  send  your  sale  proceeds  by  check,  bank  wire or
electronic  funds transfer.  Normally you will be paid within seven days. If you
recently purchased the shares being sold, the fund may delay payment of the sale
proceeds  until your payment has cleared.  This may take up to 15 calendar  days
from the purchase date.

If you are selling shares from a nonretirement  account or certain IRAs, you may
use any of the  methods  described  below.  If you  are  selling  shares  from a
retirement account other than an IRA, you must make your request in writing.

[text box]
GOOD ORDER MEANS THAT:
o  You have provided adequate instructions
o  There are no outstanding claims against your account
o  There are no transaction limitations on your account
o  If you have any fund share certificates, you submit them and they are signed
   by each record owner exactly as the shares are registered
o  Your request includes a signature guarantee if you:
   -   Are selling over $100,000 worth of shares and
       o  Want the sale  proceeds  sent to an address  other than your bank
          account of record or
       o  Want the sale  proceeds  made  payable to someone  other than the
          account's  record owners or
       o  The account  registration,  address of record or bank account of
          record has changed within the last 30 days
    - Are selling or exchanging over $5 million worth of shares
    - Are  transferring the sale proceeds to a Pioneer mutual fund account with
      a different registration [end text box]

[text box: capital icon]
You may have to pay federal income taxes on a sale or an exchange.
[end text box]


<PAGE>


BUYING, EXCHANGING AND SELLING SHARES





BUYING SHARES
EXCHANGING SHARES

IN WRITING,  BY MAIL OR BY FAX You can purchase Class Y shares by MAILING A
CHECK TO THE TRANSFER AGENT. Make your check payable to the fund.  Neither
initial nor subsequent  investments  should be made by third party check. Your
check must be in U.S.  dollars and drawn on a U.S. bank.  Include in your
purchase request the fund's  name,  the  account  number  and  the  name  or
names  in  the  account registration.

If you are  registering  an  account  in the  name  of a  corporation  or  other
fiduciary,  you must send your  completed  account  set-up forms to the transfer
agent prior to making your initial purchase.

You can exchange  Class Y shares by MAILING OR FAXING A LETTER OF INSTRUCTION TO
THE TRANSFER AGENT.  You can exchange fund shares directly through the fund only
if your account is registered in your name. However, you may not fax an exchange
request  for more than $5  million.  Include in your  letter:
o   The names and signatures  of  all  registered  owners
o   A  signature  guarantee  for  each registered  owner if the amount of the
    exchange is more than $5 million
o   The name of the fund out of which you are  exchanging  and the name
    of the fund into which you are exchanging
o   The dollar amount or number of Class Y shares you are exchanging

BY PHONE OR WIRE BY WIRE
If you have an existing Class Y account, you MAY WIRE FUNDS TO PURCHASE CLASS Y
SHARES. Note, however, that:
o    State Street Bank must receive your wire no later than 11:00 a.m.
     Eastern time on the business day after the fund receives your request to
     purchase shares
o    If State Street Bank does not receive your wire by 11:00 a.m. Eastern time
     on the next business day, your transaction will be canceled at your expense
     and risk
o    Wire transfers normally take two or more hours to complete and a fee may be
     charged by the sending bank
o    Wire transfers may be restricted on holidays and at certain other times

INSTRUCT YOUR BANK TO WIRE FUNDS TO:Receiving Bank:
                                    State Street Bank
                                      and Trust Company
                                    225 Franklin Street
                                    Boston, MA 02101
                                    ABA Routing No. 011000028
For further credit to:              Shareholder Name
                                    Existing Pioneer Account No.
                                    Pioneer Tax-Managed Fund
BY PHONE After you establish your Class Y account, YOU CAN EXCHANGE FUND
SHARES BY PHONE IF:
o   You are using the exchange to establish a new account, provided the new
    account has a registration identical to the original account
o   The fund into which you are exchanging offers Class Y shares
o   You are not exchanging  more than $5 million worth of shares per account per
    day
o   You can provide the proper account identification information

THROUGH YOUR INVESTMENT FIRM
CONSULT YOUR INVESTMENT PROFESSIONAL FOR MORE INFORMATION.

CONSULT YOUR INVESTMENT  PROFESSIONAL FOR MORE INFORMATION ABOUT EXCHANGING YOUR
SHARES.


<PAGE>








SELLING SHARES
You can sell some or all of your Class Y shares by WRITING  DIRECTLY TO THE FUND
only if your account is  registered  in your name.  Include in your request your
name, the fund's name, your fund account number,  the dollar amount or number of
Class Y shares to be sold and any other  applicable  requirements  as  described
below.
o   The  transfer  agent will send the sale  proceeds to your address of
    record unless you provide other instructions
o   Your request must be signed by all registered owners
o   The transfer agent will not process your request until it is received in
    good order

BY FAX
o   You may sell up to $5 million per account per day if the proceeds are
    directed to your bank account of record
o   You may sell up to $100,000 per account per day if the proceeds are not
    directed to your bank account of record

BY PHONE
o   You may sell up to $5 million per account per day if the proceeds are
    directed to your bank account of record
o   You may sell up to $100,000 per account per day if the proceeds are not
    directed to your bank account of record

You may sell fund shares held in a retirement plan account by phone only if your
account  is an IRA.  You may not sell your  shares by phone if you have  changed
your address (for checks) or your bank  information (for wires and transfers) in
the last 30 days.

You may receive your sale proceeds:
o   By check,  provided  the check is made  payable  exactly as your  account is
    registered
o   By bank wire or by electronic  funds transfer,  provided the sale
    proceeds are being sent to your bank address of record

CONSULT  YOUR  INVESTMENT  PROFESSIONAL  FOR  MORE  INFORMATION.  The  fund  has
authorized the  distributor to act as its agent in the repurchase of fund shares
from qualified  investment  firms. The fund reserves the right to terminate this
procedure at any time.

[text box]
HOW TO CONTACT US

BY PHONE [telephone icon]
For information or to request a telephone transaction between 9:00 a.m. to 6:00
p.m. (Eastern time) by speaking with a shareholder services representative call
1-888-294-4480
To use FactFoneSM call
1-800-225-4321

BY MAIL [envelope icon]
Send your written instructions to: PIONEERING
SERVICES CORPORATION
P.O. Box 9014
Boston, Massachusetts 02205-9014

BY FAX [fax icon]
Fax your exchange and sale requests to:
1-888-294-4485
[end text box]



[text box]
EXCHANGE PRIVILEGE
The fund and the  distributor  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.
Abuses include  frequent trading in response to short-term market  fluctuations
and a pattern of trading  that appears to be an attempt to "time the market."
In addition,  the fund and the distributor reserve the right, at any time
without notice, to charge a fee for exchanges or to modify, limit or
suspend the exchange privilege. The fund will provide 60 days' notice of
material amendments to or termination of the privilege. [end text box]



[text box]
OTHER REQUIREMENTS
If you must use a written  request to  exchange  or sell your Class Y shares and
your account is registered in the name of a corporation  or other  fiduciary you
must include the name of an authorized  person and a certified copy of a current
corporate  resolution,  certificate  of  incumbency  or similar  legal  document
showing that the named  individual  is authorized to act on behalf of the record
owner. [end text box]


<PAGE>


BUYING, EXCHANGING AND SELLING SHARES





ACCOUNT OPTIONS

DISTRIBUTION OPTIONS
The  fund  offers  three  distribution  options.  Any  fund  shares  you  buy by
reinvesting  distributions  will be priced at the applicable net asset value per
share.

(1)      Unless you indicate  another  option on your account  application,  any
         dividends and capital gain  distributions  paid to you by the fund will
         automatically be invested in additional fund shares.

(2)      You may elect to have the amount of any dividends paid to you in cash
         and any capital gain distributions reinvested in additional shares.

(3)      You may elect to have the full amount of any dividends and/or capital
         gain distributions paid to you in cash.

Options (2) or (3) are not  available to  retirement  plan  accounts or accounts
with a current value of less than $500.

If your distribution  check is returned to the transfer agent or you do not cash
the check for six months or more,  the transfer agent may reinvest the amount of
the check in your account and  automatically  change the distribution  option on
your  account to option (1) until you  request a  different  option in  writing.
These additional shares will be purchased at the then current net asset value.

SHAREOWNER SERVICES

FACTFONESM 1-800-225-4321 You can use FactFoneSM to:
o   Obtain current  information on your Pioneer mutual fund accounts
o   Inquire about the prices and yields of all publicly  available  Pioneer
    mutual funds
o   Request account statements

If your  account is  registered  in the name of a  broker-dealer  or other third
party, you may not be able to use FactFoneSM to obtain account information.

CONFIRMATION STATEMENTS
The transfer agent  maintains an account for each  investment firm or individual
shareowner and records all account  transactions.  You will be sent confirmation
statements  showing  the  details of your  transactions  as they  occur,  except
automatic investment plan transactions,  which are confirmed  quarterly.  If you
have more than one Pioneer  mutual fund  account  registered  in your name,  the
Pioneer combined account statement will be mailed to you each quarter.

TAX INFORMATION
In January of each year, the fund will mail you information about the tax status
of the dividends and distributions paid to you by the fund.

PIONEER WEBSITE
WWW.PIONEERFUNDS.COM
The website  includes a full selection of information on mutual fund  investing.
You can also use the website to get:
o    Your current  account  information
o    Prices,  returns and yields of all publicly available Pioneer mutual funds
o    Prospectuses for all the Pioneer funds


<PAGE>








SHAREOWNER ACCOUNT POLICIES

SIGNATURE  GUARANTEES  AND  OTHER  REQUIREMENTS  You are  required  to  obtain a
signature  guarantee when you are:
o   Requesting  certain types of exchanges or sales of fund shares
o   Redeeming shares for which you hold a share certificate
o   Requesting certain types of changes for your existing account

You can obtain a signature  guarantee from most  broker-dealers,  banks,  credit
unions  (if   authorized   under  state  law)  and  federal   savings  and  loan
associations. You cannot obtain a signature guarantee from a notary public.

Fiduciaries and corporations are required to submit additional documents to sell
fund shares.

MINIMUM ACCOUNT SIZE
The fund requires that you maintain a minimum account value of $500. If you hold
less than the minimum in your account because you have sold or exchanged some of
your  shares,  the fund will  notify you of its  intent to sell your  shares and
close your account.  You may avoid this by increasing  the value of your account
to at least the minimum within six months of the notice from the fund.

TELEPHONE ACCESS
You may have difficulty  contacting the fund by telephone during times of market
volatility or disruption  in telephone  service.  If you are unable to reach the
fund by telephone, you should communicate with the fund in writing.

SHARE CERTIFICATES
Normally,  your  shares  will  remain on  deposit  with the  transfer  agent and
certificates will not be issued.

OTHER POLICIES
The fund may suspend  transactions  in shares when trading on the New York Stock
Exchange  is  closed or  restricted,  when an  emergency  exists  that  makes it
impracticable for the fund to sell or value its portfolio securities or with the
permission of the Securities and Exchange Commission.

The fund or the distributor may revise, suspend or terminate the account options
and services available to shareowners at any time.

The fund reserves the right to stop offering Class Y shares.

The fund reserves the right to redeem in kind by delivering portfolio securities
to a redeeming  shareowner,  provided that the fund must pay redemptions in cash
if a  shareowner's  aggregate  redemptions  in a 90 day  period  are  less  than
$250,000 or 1% of the fund's net assets.


<PAGE>


DIVIDENDS, CAPITAL GAINS AND TAXES






DIVIDENDS AND CAPITAL GAINS
The fund generally pays distributions of net short- and long-term capital gains
in November.  The fund generally pays dividends from any net investment income
in December.  The fund may also pay dividends and distributions at
other times if necessary for the fund to avoid federal  income or excise tax. If
you  invest in the fund  close to the time that the fund  makes a capital  gains
distribution,  generally  you will pay a higher price per share and you will pay
taxes on the amount of the capital gains  distribution  whether you reinvest the
distribution or receive it as cash.


TAXES
For  federal  income  tax  purposes,  your  distributions  from the  fund's  net
long-term  capital  gains  are  considered  long-term  capital  gains and may be
taxable to you at different  maximum rates depending upon their source and other
factors.  Dividends and  short-term  capital gain  distributions  are taxable as
ordinary  income.  Dividends  and  distributions  are taxable,  whether you take
payment in cash or reinvest  them to buy  additional  fund shares.  You may also
have tax  consequences  (generally,  a  capital  gain or loss)  when you sell or
exchange fund shares. Each year the fund will mail to you information about your
dividends  and  distributions  for,  and the shares  you sold in,  the  previous
calendar year.

You must provide your social  security  number or other taxpayer  identification
number  to the fund  along  with the  certifications  required  by the  Internal
Revenue  Service  when you open an account.  If you do not or if it is otherwise
legally  required to do so, the fund will withhold 31% "backup  withholding" tax
from your dividends and distributions,  sales proceeds and any other payments to
you.

You  should  ask  your  own  tax   adviser   about  any  federal  or  state  tax
considerations,  including  possible  additional  withholding taxes for non-U.S.
shareholders.   You  may  also  consult  the  fund's   statement  of  additional
information for a more detailed  discussion of federal income tax considerations
that may affect the fund and its shareowners.

[text box: capital icon]
Sales and exchanges may be taxable transactions to shareowners.
[end text box]


<PAGE>














PIONEER
TAX-MANAGED FUND


YOU CAN OBTAIN MORE FREE INFORMATION about the fund from your investment firm or
by  writing  to  Pioneering  Services  Corporation,  60  State  Street,  Boston,
Massachusetts 02109. You may also call 1-888-294-4480.

SHAREOWNER REPORTS
Annual and  semiannual  reports to  shareowners  provide  information  about the
fund's investments. The annual report discusses market conditions and investment
strategies that  significantly  affected the fund's  performance during its last
fiscal year.

STATEMENT OF ADDITIONAL INFORMATION
The statement of additional information provides more detailed information about
the fund. It is incorporated by reference into this prospectus.

VISIT OUR WEBSITE
www.pioneerfunds.com



You can also review the fund's shareowner reports, prospectus and statement
of additional information at the Commission's Public Reference Room in
Washington, D.C.  Call 1-202-942-8090 for information. The Commission charges
a fee for copies. You can get the same information free from the Commission's
EDGAR database on the Internet (http://www.sec.gov).  You may also e-mail
requests for these documents to [email protected] or make a request in writing
to the Commission's Public Reference Section, Washington, D.C. 20549-0102.




(Investment Company Act file no. 811-09585)




[Pioneer
logo]  Pioneer Funds Distributor, Inc.
       60 State Street
       Boston, MA 02109                                   7289-00-1199
       www.pioneerfunds.com     (C) Pioneer Funds Distributor, Inc.






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