002-57653

                                            Filed Pursuant to Rule 497(e) of the
                                            Securities Act of 1933


                                                                 August 10, 2009



   Supplement to the May 1, 2009 Class A, Class B, Class C and Class Y Shares
                 Prospectuses for Pioneer Tax Free Income Fund


The following replaces the second paragraph in the section entitled "Principal
investment strategies":

The fund may invest in securities of any maturity. The fund may invest 25% or
more of its assets in issuers in any one or more states or securities the
payments on which are derived from gas, electric, telephone, sewer, water,
healthcare, education and transportation segments of the municipal bond market.
The fund also may invest up to 20% of its assets in industrial development
bonds.


The following supplements the section entitled "Market segment risks":

To the extent the fund invests in issuers of securities the payments on which
are derived from gas, electric, telephone, sewer, water, healthcare, education
and transportation segments of the municipal bond market, the fund may be
subject to risks associated with such segments. Gas transmission and
distribution companies are undergoing significant changes. In the
placecountry-regionUnited States, the Federal Energy Regulatory Commission is
reducing its regulation of interstate transmission of gas. In addition, gas
utility companies have, in the recent past, been adversely affected by
disruptions in the oil industry, increased concentration and increased
competition. The electric utilities segment has been experiencing, and will
continue to experience, increased competitive pressures. Federal legislation in
the last few years will open transmission access to any electricity supplier,
although it is not presently known to what extent competition will evolve. Other
risks include the availability and cost of fuel, the availability and cost of
capital, the effects of conservation on energy demand, the effects of rapidly
changing environmental, safety, and licensing requirements, and other federal,
state, and local regulations, timely and sufficient rate increases, and
opposition to nuclear power. The telephone segment is large and highly
concentrated. The greatest portion of this segment is comprised of companies
that distribute telephone services and provide access to the telephone networks.
While many telephone companies have diversified into other businesses in recent
years, the profitability of telephone utility companies could be adversely
affected by increasing competition, technological innovations, and other
structural changes in the industry. Public resistance to rate increases, costly
environmental litigation, and Federal environmental mandates are challenges
faced by issuers of water and sewer bonds. In addition, lack of water supply due
to insufficient rain, run-off, or snow pack has, in the past, had an adverse
effect on the water segment of the municipal bond market. Further, the water
utility segment is highly fragmented because most of the water supplies are
owned by local authorities. Water utility companies are generally mature and are
experiencing little or no per capita volume growth. The profitability of
companies in the healthcare segment may be affected by extensive government
regulation and reform, restrictions on government reimbursement for medical
expenses, rising costs of medical products, services and patient care, pricing
pressure, an increased emphasis on outpatient services, limited number of
products, industry innovation, changes in technologies and other market
developments. Many healthcare companies depend on patent protection. The
expiration of patents may adversely affect the profitability of these companies
and the value of their securities. Healthcare companies are also subject to
extensive litigation based on product liability and similar claims. Many new
products are subject to approval of the Food and Drug Administration. The
process of obtaining such approval can be long and costly. Healthcare companies
are also subject to competitive forces that may make it difficult to raise
prices and, in fact, may result in price discounting. The education segment can
be significantly affected by declining applicant pools, changes in student
enrollment, decreases in state and federal financial aid to students, declines
in endowment contributions and decreases in endowment portfolio values.
Companies in the transportation segment can be significantly affected by changes
in the economy, fuel prices, labor relations, and insurance costs. The trend in
the placecountry-regionUnited States has been to deregulate the transportation
industry, which could have a favorable long-term effect, but future government
decisions could adversely affect transportation companies.



                                                                   23344-00-0809
                                        (C) 2009 Pioneer Funds Distributor, Inc.
                                             Underwriter of Pioneer mutual funds
                                                                     Member SIPC