CLASS C SHARES DISTRIBUTION PLAN

                       PIONEER TAX FREE MONEY MARKET FUND

     CLASS C SHARES DISTRIBUTION PLAN, dated as of [   ], 2004, of PIONEER TAX
FREE MONEY MARKET FUND (the "Fund"), a series of Pioneer Series Trust II (the
"Trust"), a Delaware statutory trust.

                                   WITNESSETH

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

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

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

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

     WHEREAS, the Trust also recognizes and agrees that (a) PFD may retain the
services of firms or individuals to act as dealers or wholesalers (collectively,
the "Dealers") of the Class C Shares in connection with the offering of Class C
Shares, (b) PFD may compensate any Dealer that sells Class C Shares in the
manner and at the rate or rates to be set forth in an agreement between PFD and
such Dealer and (c) PFD may make such payments to the Dealers for distribution
services out of the fee paid to PFD hereunder, any deferred sales charges
imposed by PFD in connection with the repurchase of Class C shares, its profits
or any other source available to it;

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

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

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that the adoption and implementation of this Class C Plan will benefit the Fund
and its Class C shareholders;

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

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

          (b) The amount of compensation paid during any one year for
          distribution services with respect to Class C Shares shall be 0.75% of
          the Fund's average daily net assets attributable to Class C Shares for
          such year.

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

          (d) The amount of compensation paid during any one year for personal
          and account maintenance services and expenses shall be 0.25% of the
          Fund's average daily net assets attributable to Class C Shares for
          such year. As partial consideration for personal services and/or
          account maintenance services provided by PFD to the Class C Shares,
          PFD shall be entitled to be paid any fees payable under this clause
          (d) with respect to Class C shares for which no dealer of record
          exists, where less than all consideration has been paid to a dealer of
          record or where qualification standards have not been met.

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

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

          (g) Appropriate adjustments to payments made pursuant to clauses (b)
          and (d) of this paragraph 1 shall be made whenever necessary to ensure
          that no payment is made by the Fund in excess of the applicable
          maximum cap imposed on asset based, front-end and deferred sales
          charges by Section 2830(d) of the Conduct Rules of the NASD.

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

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

     4.   This Class C Plan shall become effective upon approval by (i) a vote
of the Board of Trustees, and (ii) a vote of a majority of the Trustees who are
not "interested persons" of the Trust and who have no direct or indirect
financial interest in the operation of the Class C Plan or in any agreements
related to the Class C Plan (the "Qualified Trustees"), such votes to be cast in
person at a meeting called for the purpose of voting on this Class C Plan.

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

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

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

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

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

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

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

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

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