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August 18, 2004                                         60 STATE STREET
                                                        BOSTON, MA 02109
Pioneer America Income Trust                            + 1 617-526-6000
60 State Street                                         + 1 617-526-5000 fax
Boston, Massachusetts 02109                             wilmerhale.com

Ladies and Gentlemen:

Pioneer America Income Trust (the "Fund") was established as a Massachusetts
business trust under an Agreement and Declaration of Trust dated March 18, 1988,
as amended from time to time (the "Declaration of Trust"). The beneficial
interests thereunder are represented by transferable shares of beneficial
interest, no par value.

The Trustees have the powers set forth in the Declaration of Trust, subject to
the terms, provisions and conditions therein provided. Pursuant to Article V,
Section 2 of the Declaration of Trust, the number of shares of beneficial
interest authorized to be issued under the Declaration of Trust is unlimited and
the Trustees are authorized to divide the shares into one or more series of
shares and one or more classes thereof as they deem necessary or desirable.
Pursuant to Article V, Sections 2 and 3 of the Declaration of Trust, the
Trustees are empowered in their discretion to issue shares of any series for
such amount and type of consideration, including cash or securities, and on such
terms as the Trustees may authorize, all without action or approval of the
shareholders. As of the date of this opinion, the Trustees have established one
additional class of shares of the Fund, designated as Investor Class shares.

We have examined the Declaration of Trust and By-Laws, each as amended from time
to time, of the Fund, and such other documents as we have deemed necessary or
appropriate for the purposes of this opinion, including, but not limited to,
originals, or copies certified or otherwise identified to our satisfaction, of
such documents, Fund records and other instruments. In our examination of the
above documents, we have assumed the genuineness of all signatures, the
authenticity of all documents submitted to us as originals and the conformity to
original documents of all documents submitted to us as certified of photostatic
copies.

Our opinions below are qualified to the extent that they may be subject to or
affected by (i) applicable bankruptcy, insolvency, reorganization, fraudulent
conveyance or transfer, moratorium or similar laws affecting the rights and
remedies of creditors generally, (ii) statutory or decisional law concerning
recourse by creditors to security in the absence of notice or hearing and (iii)
duties and standards imposed on creditors and parties to contracts, including,
without limitation, requirements of good faith, reasonableness and fair dealing.
Further, we do not express any opinion as to (i) the availability of the remedy
of specific performance or any other equitable remedy upon breach of any
provision of any agreement whether applied by a court of law or equity, (ii) the
successful assertion of any equitable defense, or (iii) the right of any party
to enforce the indemnification or contribution provisions of any agreement.


            BALTIMORE   BERLIN   BOSTON   BRUSSELS   LONDON   MUNICH
   NEW YORK   NORTHERN VIRGINIA   OXFORD   PRINCETON   WALTHAM   WASHINGTON


Pioneer America Income Trust
August 18, 2004
Page 2

In rendering the opinion below, insofar as it relates to the good standing and
valid existence of the Fund, we have relied solely on a certificate of the
Secretary of the Commonwealth of Massachusetts, dated as of a recent date, and
such opinion is limited accordingly and is rendered as of the date of such
certificate.

This opinion is limited to the laws of the Commonwealth of Massachusetts
relating to business trusts, and we express no opinion with respect to the laws
of any other jurisdiction or to any other laws of the Commonwealth of
Massachusetts. Further, we express no opinion as to compliance with any state or
federal securities laws, including the securities laws of the Commonwealth of
Massachusetts.

Our opinion below, as it relates to the non-assessability of the shares of the
Fund, is qualified to the extent that, under Massachusetts law, shareholders of
a Massachusetts business trust may be held personally liable for the obligations
of the Fund. However, the Declaration of Trust disclaims shareholder liability
for acts or obligations of the Fund. Also, the Declaration of Trust provides for
indemnification out of Fund property for all loss and expense of any shareholder
held personally liable for the obligations of the Fund.

Subject to the foregoing, we are of the opinion that the Fund is a duly
organized and validly existing business trust in good standing under the laws of
the Commonwealth of Massachusetts and that the Investor Class shares of the
Fund, when issued in accordance with the terms, conditions, requirements and
procedures set forth in the Declaration of Trust, the Fund's Registration
Statement on Form N-1A, will be validly issued, fully paid and non-assessable
shares of beneficial interest, subject to compliance with the Securities Act of
1933, as amended (the "Securities Act"), the Investment Company Act of 1940, as
amended, and the applicable state laws regulating the sale of securities.

Please note that we are opining only as to the matters expressly set forth
herein, and no opinion should be inferred as to any other matters. This opinion
is based upon currently existing statutes, rules, regulations and judicial
decisions, and we disclaim any obligation to advise you of any change in any of
these sources of law or subsequent legal or factual developments which might
affect any matters or opinions set forth herein.

We hereby consent to the filing of this opinion with the Securities and Exchange
Commission (the "Commission") as an exhibit to the Fund's Registration Statement
in accordance with the requirements of Form N-1A and Form N-14 under the
Securities Act. In giving such consent, we do not hereby admit that we are in
the category of persons whose consent is required under Section 7 of the
Securities Act or the rules and regulations of the Commission.

Very truly yours,


/s/ WILMER CUTLER PICKERING
HALE AND DORR LLP