Bingham McCutchen LLP
                               One Federal Street
                                Boston, MA 02110

                                  June 18, 2008


Pioneer Tax Free Income Fund
60 State Street
Boston, Massachusetts  02109

Ladies and Gentlemen:

         We have acted as counsel to Pioneer Tax Free Income Fund, a Delaware
statutory trust (the "Trust"), on behalf of its series, Pioneer Tax Free Income
Fund (the "Surviving Fund"), in connection with the Trust's Registration
Statement on Form N-14 to be filed with the Securities and Exchange Commission
on or about June 18, 2008 (the "Registration Statement"), with respect to the
Surviving Fund's Class A shares of beneficial interest (the "Shares") to be
issued in exchange for the common shares of Pioneer Municipal and Equity Income
Trust, a series of Pioneer Municipal and Equity Income Trust, a Delaware
statutory trust, as described in the Registration Statement (the "Merger"). You
have requested that we deliver this opinion to you in connection with the
Trust's filing of the Registration Statement.

         In connection with the furnishing of this opinion, we have examined the
following documents:

                  (a) a certificate of the Secretary of the State of Delaware as
         to the existence of the Trust;

                  (b) a copy, certified by the Secretary of the State of
         Delaware, of the Trust's Certificate of Trust dated June 20, 1994 filed
         with the Secretary of State (the "Certificate of Trust");

                  (c) a certificate executed by the Assistant Secretary of the
         Trust, certifying as to, and attaching copies of, the Trust's
         Agreement and Declaration of Trust (the "Declaration"), the Trust's
         By-Laws (the "By-Laws"), and the resolutions adopted by the Trustees
         of the Trust at a meeting held on May 22, 2008, authorizing the Merger
         and the issuance of the Shares on behalf of the Surviving Fund (the
         "Resolutions");

                  (d) a printer's proof, received on June 18, 2008, of the
         Registration Statement; and



Pioneer Tax Free Income Fund
June 18, 2008
Page 2

                  (e) a copy of the Agreement and Plan of Merger to be entered
         into by the Surviving Fund in the form included as Appendix A to the
         draft Registration Statement referred to in paragraph (d) above (the
         "Agreement and Plan of Merger").

         In such examination, we have assumed the genuineness of all signatures,
the conformity to the originals of all of the documents reviewed by us as
copies, including conformed copies, the authenticity and completeness of all
original documents reviewed by us in original or copy form and the legal
competence of each individual executing any document. We have assumed that the
Registration Statement as filed with the Securities and Exchange Commission will
be in substantially the form of the printer's proof referred to in paragraph (d)
above, and that the Agreement and Plan of Merger will be duly completed,
executed and delivered by the parties thereto in substantially the form of the
copy referred to in paragraph (e) above. We have also assumed for the purposes
of this opinion that the Declaration, the Certificate of Trust, the Resolutions
and the Agreement and Plan of Merger will not have been amended, modified or
withdrawn and will be in full force and effect on the date of issuance of such
Shares.

         This opinion is based entirely on our review of the documents listed
above and such other documents as we have deemed necessary or appropriate for
the purposes of this opinion and such investigation of law as we have deemed
necessary or appropriate. We have made no other review or investigation of any
kind whatsoever, and we have assumed, without independent inquiry, the accuracy
of the information set forth in such documents.

         This opinion is limited solely to the Delaware Statutory Trust Act
(which for this purpose includes applicable provisions of the Delaware
Constitution and reported judicial decisions interpreting these laws) to the
extent that the same may apply to or govern the transactions referred to herein,
and we express no opinion with respect to the laws of any other jurisdiction or
to any other laws of the State of Delaware. Further, we express no opinion as to
any state or federal securities laws, including the securities laws of the State
of Delaware. No opinion is given herein as to the choice of law or internal
substantive rules of law which any tribunal may apply to such transaction. In
addition, to the extent that the Declaration or the By-Laws refer to,
incorporate or require compliance with, the Investment Company Act of 1940, as
amended, or any other law or regulation applicable to the Trust, except for the
Delaware Statutory Trust Act, as aforesaid, we have assumed compliance by the
Trust with such Act and such other laws and regulations.

         Our opinion below, as it relates to the nonassessability of the shares
of the Trust, is qualified to the extent that any shareholder is, was or may
become a named Trustee of the Trust.



Pioneer Tax Free Income Fund
June 18, 2008
Page 3

         We understand that all of the foregoing assumptions and limitations are
acceptable to you.

         Based upon and subject to the foregoing, please be advised that it is
our opinion that the Shares, when issued and sold in accordance with the
Declaration and the Resolutions and for the consideration described in the
Agreement and Plan of Merger, will be validly issued, fully paid and
nonassessable.

         This opinion is given as of the date hereof and we assume no obligation
to update this opinion to reflect any changes in law or any other facts or
circumstances which may hereafter come to our attention. We hereby consent to
the filing of this opinion as an exhibit to the Registration Statement.

                                Very truly yours,

                                /s/ Bingham McCutchen LLP

                                BINGHAM McCUTCHEN LLP