John Hancock Tax-Free Income Funds

Supplement to the Class A, Class B and Class C Shares Prospectus

dated January 1, 2006 as revised May 1, 2006

Under the heading “Your Account” the following has been deleted:

Your broker-dealer receives a percentage of these sales charges and fees. In addition, John Hancock Funds, LLC, the funds’ principal distributor, may pay significant compensation out of its own resources to your broker-dealer. These payments are described in the Statement of Additional Information (SAI).

And replaced with the following:

Additional payments to financial intermediaries

Shares of the funds are primarily sold through financial intermediaries (firms), such as brokers, banks, registered investment advisers, financial planners, and retirement plan administrators. These firms may be compensated for selling shares of the funds in two principal ways:

• directly, by the payment of sales commissions, if any; and

• indirectly, as a result of the fund paying Rule 12b-1 fees.

Certain firms may request, and the distributor may agree to make, payments in addition to sales commissions and 12b-1 fees out of the distributor’s own resources. These additional payments are sometimes referred to as “revenue sharing.” These payments assist in our efforts to promote the sale of the funds’ shares. The distributor agrees with the firm on the methods for calculating any additional compensation, which may include the level of sales or assets attributable to the firm. Not all firms receive additional compensation and the amount of compensation varies. These payments could be significant to a firm. The distributor determines which firms to support and the extent of the payments it is willing to make. The distributor generally chooses to compensate firms that have a strong capability to distribute shares of the funds and that are willing to cooperate with the distributor’s promotional efforts.

The distributor hopes to benefit from revenue sharing by increasing the funds’ net assets, which, as well as benefiting the fund, would result in additional management and other fees for the investment adviser and its affiliates. In consideration for revenue sharing, a firm may feature certain funds in its sales system or give preferential access to members of its sales force or management. In addition, the firm may agree to participate in the distributor’s marketing efforts by allowing us to participate in conferences, seminars or other programs attended by the intermediary’s sales force. Although an intermediary may seek revenue sharing payments to offset costs incurred by the firm in servicing its clients that have invested in the funds, the intermediary may earn a profit on these payments. Revenue sharing payments may provide your firm with an incentive to favor the funds.

The statement of additional information discusses the distributor’s revenue sharing arrangements in more detail. Your intermediary may charge you additional fees other than those disclosed in this prospectus. You can ask your firm about any payments it receives from the distributor or the funds, as well as about fees and/or commissions it charges.

The distributor, investment adviser and their affiliates may have other relationships with your firm relating to the provisions of services to the funds, such as providing omnibus account services, transaction processing services, or effecting portfolio transactions for funds. If your intermediary provides these services, the investment adviser or the funds may compensate the intermediary for these services. In addition, your intermediary may have other compensated relationships with the investment adviser or its affiliates that are not related to the funds.

TXFPS3 5/06 May 11, 2006