PRIME INCOME TRUST
SC 13E4, 1997-02-10
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<PAGE>
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 10, 1997
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                 SCHEDULE 13E-4
                         ISSUER TENDER OFFER STATEMENT
                      (PURSUANT TO SECTION 13(e)(1) OF THE
                        SECURITIES EXCHANGE ACT OF 1934)
                               (AMENDMENT NO.   )
 
                               PRIME INCOME TRUST
                                (Name of Issuer)
 
                               PRIME INCOME TRUST
                      (Name of Person(s) Filing Statement)
 
         COMMON SHARES OF BENEFICIAL INTEREST, PAR VALUE $.01 PER SHARE
                         (Title of Class of Securities)
 
                                   920914-108
                     (CUSIP Number of Class of Securities)
                              Sheldon Curtis, Esq.
                               Prime Income Trust
                             Two World Trade Center
                              New York, N.Y. 10048
                                 (212) 392-1600
 
      (Name, Address and Telephone Number of Person Authorized to Receive
      Notices and Communications on Behalf of Person(s) Filing Statement)
 
                            ------------------------
 
                               FEBRUARY 12, 1997
                      (Date Tender Offer First Published,
                       Sent or Given to Security Holders)
 
                            ------------------------
 
                           CALCULATION OF FILING FEE
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
TRANSACTION VALUATION $39,800,000 (a)           AMOUNT OF FILING FEE: $7,960 (b)
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
(a) Calculated as the aggregate maximum purchase price to be paid for 4,000,000
    shares in the offer.
 
(b) Calculated as 1/50 of 1% of the Transaction Valuation.
 
 / / Check box if any part of the fee is offset as provided by Rule 0-11(a)(2)
    and identify the filing with which the offsetting fee was previously paid.
    Identify the previous filing by registration statement number, or the Form
    or Schedule and the date of its filing.
    Amount Previously Paid: ____________________________________________________
    Form or Registration No.: __________________________________________________
    Filing Party: ______________________________________________________________
    Date Filed: ________________________________________________________________
 
                                                               Exhibit Index
                                                               Located on Page 5
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
ITEM 1.  SECURITY AND ISSUER.
 
    (a)  The name of the issuer is Prime Income Trust, a non-diversified,
closed-end management investment company organized as a Massachusetts business
trust (the "Trust") under the name "Allstate Prime Income Trust". The name was
changed to its present form effective March 1, 1993. The principal executive
offices of the Trust are located at Two World Trade Center, New York, N.Y.
10048.
 
    (b)  The title of the securities being sought is common shares of beneficial
interest, par value $.01 per share (the "Common Shares"). As of February 7, 1997
there were approximately 109,963,626 Common Shares issued and outstanding.
 
    The Trust is seeking tenders for up to 4,000,000 Common Shares, at the net
asset value per Common Share, calculated on the day the tender offer expires,
upon the terms and subject to the conditions set forth in the Offer to Purchase,
dated February 12, 1997 (the "Offer to Purchase"), and the related Letter of
Transmittal (which together constitute the "Offer"). An "Early Withdrawal
Charge" will be imposed on most Common Shares accepted for payment. A copy of
each of the Offer to Purchase and the Letter of Transmittal is attached hereto
as Exhibit (a)(1)(ii) and Exhibit (a)(2), respectively. Reference is hereby made
to the Cover Page and Section 1 "Price; Number of Common Shares" of the Offer to
Purchase, which are incorporated herein by reference. The Trust has been
informed that no trustees, officers or affiliates of the Trust intend to tender
Common Shares pursuant to the Offer.
 
    (c)  The Common Shares are not currently traded on an established trading
market.
 
    (d)  Not Applicable.
 
ITEM 2.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.
 
    (a)-(b)  Reference is hereby made to Section 12 "Source and Amount of Funds"
of the Offer to Purchase, which is incorporated herein by reference.
 
ITEM 3.  PURPOSE OF THE TENDER OFFER AND PLANS OR PROPOSALS OF THE ISSUER OR
         AFFILIATE.
 
    Reference is hereby made to Section 7 "Purpose of the Offer," Section 8
"Plans or Proposals of the Trust," Section 11 "Certain Effects of the Offer" and
Section 12 "Source and Amount of Funds" of the Offer to Purchase, which are
incorporated herein by reference. In addition, the Trust regularly purchases and
sells assets in its ordinary course of business. Except as set forth above, the
Trust has no plans or proposals which relate to or would result in (a) the
acquisition by any person of additional securities of the Trust or the
disposition of securities of the Trust; (b) an extraordinary corporate
transaction, such as a merger, reorganization or liquidation, involving the
Trust; (c) a sale or transfer of a material amount of assets of the Trust; (d)
any change in the present Board of Trustees or management of the Trust,
including, but not limited to, any plans or proposals to change the number or
the term of Trustees, or to fill any existing vacancy on the Board of Trustees
or to change any material term of the employment contract of any executive
officer of the Trust; (e) any material change in the present dividend rate or
policy, or indebtedness or capitalization of the Trust; (f) any other material
change in the Trust's structure or business, including any plans or proposals to
make any changes in its investment policy for which a vote would be required by
Section 13 of the Investment Company Act of 1940; (g) any changes in the Trust's
declaration of trust, bylaws or instruments corresponding thereto or other
actions which may impede the acquisition of control of the Trust by any person;
(h) a class of equity securities of the Trust being delisted from a national
securities exchange or ceasing to be authorized to be quoted on an inter-dealer
quotation system of a registered national securities association; (i) a class of
equity security of the Trust becoming eligible for termination of registration
under the Investment Company Act of 1940; or (j) the suspension of the Trust's
obligation to file reports pursuant to Section 15(d) of the Securities Exchange
Act of 1934.
 
                                       2
<PAGE>
ITEM 4.  INTEREST IN SECURITIES OF THE ISSUER.
 
    Reference is hereby made to Section 10 "Interest of Trustees and Executive
Officers; Transactions and Arrangements Concerning the Common Shares" of the
Offer to Purchase and the financial statements included as part of Exhibit
(a)(1)(ii) attached hereto, which are incorporated herein by reference. Except
as set forth therein, there have not been any transactions involving the Common
Shares of the Trust that were effected during the past 40 business days by the
Trust, any executive officer or Trustee of the Trust, any person controlling the
Trust, any executive officer or director of any corporation ultimately in
control of the Trust or by any associate or subsidiary of any of the foregoing,
including any executive officer or director of any such subsidiary.
 
ITEM 5.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
         TO THE ISSUER'S SECURITIES.
 
    Reference is hereby made to Section 10 "Interest of Trustees and Executive
Officers; Transactions and Arrangements Concerning the Common Shares" of the
Offer to Purchase which is incorporated herein by reference. Except as set forth
therein, the Trust does not know of any contract, arrangement, understanding or
relationship relating, directly or indirectly, to the Offer (whether or not
legally enforceable) between the Trust, any of the Trust's executive officers or
Trustees, any person controlling the Trust or any officer or director of any
corporation ultimately in control of the Trust and any person with respect to
any securities of the Trust (including, but not limited to, any contract,
arrangement, understanding or relationship concerning the transfer or the voting
of any such securities, joint ventures, loan or option arrangements, puts or
calls, guarantees of loans, guarantees against loss, or the giving or
withholding of proxies, consents or authorizations).
 
ITEM 6.  PERSONS RETAINED, EMPLOYED OR TO BE COMPENSATED.
 
    No persons have been employed, retained or are to be compensated by or on
behalf of the Trust to make solicitations or recommendations in connection with
the Offer.
 
ITEM 7.  FINANCIAL INFORMATION.
 
    (a)-(b)  Reference is hereby made to the financial statements included as
part of Exhibit (a)(1)(ii) attached hereto, which are incorporated herein by
reference.
 
ITEM 8.  ADDITIONAL INFORMATION.
 
    (a)  Reference is hereby made to Section 10 "Interests of Trustees and
Executive Officers; Transactions and Arrangements Concerning the Common Shares"
of the Offer to Purchase which is incorporated herein by reference.
 
    (b)-(d)  Not applicable.
 
    (e)  The Offer to Purchase, attached hereto as Exhibit (a)(1)(ii), is
incorporated herein by reference in its entirety.
 
ITEM 9.  MATERIAL TO BE FILED AS EXHIBITS.
 
(a)(1)(i)  Advertisement printed in THE WALL STREET JOURNAL National Edition.
    (ii)   Offer to Purchase (including Financial Statements).
   (iii)   Form of Letter to Shareholders who have requested Offer to Purchase.
(a)(2)     Form of Letter of Transmittal (including Guidelines for Certification
            of Taxpayer Identification Number).
(b)        Not applicable.
(c)(1)     Hold Harmless Agreement between the Trust and Dean Witter Reynolds
            Inc. dated May 2, 1990 previously filed as Exhibit (c)(1) to the
            Trust's Schedule 13E-4 on May 22, 1990 and via EDGAR on December 20,
            1993.
(c)(2)     Form of Depositary Agreement between the Trust and Dean Witter Trust
            Company dated as of February 7, 1997.
(c)(4)     Form of Administration Agreement dated December 31, 1993 previously
            filed via EDGAR on February 14, 1994.
(d)-(f)    Not applicable.
 
                                       3
<PAGE>
                                   SIGNATURE
 
    After due inquiry and to the best of my knowledge and belief, I certify that
the information set forth in this statement is true, complete and correct.
 
                                          PRIME INCOME TRUST
 
                                                    /s/ SHELDON CURTIS
 
                                          --------------------------------------
 
                                                      Sheldon Curtis
                                               Vice President and Secretary
 
February 10, 1997
 
                                       4
<PAGE>
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
EXHIBIT                                  DESCRIPTION                           PAGE
- ---------------  ------------------------------------------------------------  -----
<S>              <C>                                                           <C>
(a)(1)(i)        Advertisement printed in THE WALL STREET JOURNAL National
                  Edition....................................................
(a)(1)(ii)       Offer to Purchase (including Financial Statements)..........
(a)(1)(iii)      Form of Letter to Shareholders who have requested Offer to
                  Purchase...................................................
(a)(2)           Form of Letter of Transmittal (including Guidelines for
                  Certification of Tax Identification Number)................
(c)(1)*          Hold Harmless Agreement.....................................
(c)(2)           Form of Depositary Agreement between the Trust and Dean
                  Witter Trust Company.......................................
(c)(3)**         Form of New Investment Advisory Agreement dated June 30,
                  1993.......................................................
(c)(4)***        Form of Administration Agreement dated December 31, 1993....
(c)(5)**         Form of New Distribution Agreement dated June 30, 1993......
</TABLE>
 
- ------------------------
    *Previously filed by the Trust as an exhibit to Schedule 13E-4 which was
     filed with the Commission on May 22, 1990 and via EDGAR on December 20,
     1993.
   **Previously filed as an exhibit to Schedule 13E-4 via EDGAR on August 17,
     1993.
  ***Previously filed as an exhibit to Schedule 13E-4 via EDGAR on February 14,
     1994.
 
                                       5

<PAGE>
                                                               EXHIBIT (a)(1)(i)
 
                ADVERTISEMENT PRINTED IN THE WALL STREET JOURNAL
                                NATIONAL EDITION
<PAGE>

================================================================================

This  announcement  is not an offer to purchase or a solicitation of an offer to
sell  Common  Shares.  The  Offer is made only by the  Offer to  Purchase  dated
February 12, 1997, and the related Letter of Transmittal. The Offer is not being
made to, nor will  tenders be accepted  from or on behalf of,  holders of Common
Shares in any  jurisdiction in which making or accepting the Offer would violate
that jurisdiction's laws.

                               Prime Income Trust

                      Notice of Offer to Purchase for Cash
             4,000,000 of its Issued and Outstanding Common Shares
                      at Net Asset Value Per Common Share

- --------------------------------------------------------------------------------
THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT,
NEW YORK CITY TIME ON MARCH 14, 1997, UNLESS THE OFFER IS EXTENDED.
- --------------------------------------------------------------------------------

     Prime Income Trust (the  "Trust") is offering to purchase  4,000,000 of its
issued and outstanding common shares of beneficial  interest,  par value of $.01
per share  ("Common  Shares") at a price equal to their net asset value  ("NAV")
computed as of 4:00 P.M. New York City time on  March 14, 1997,  the  Expiration
Date,  unless extended,  upon the terms and conditions set forth in the Offer to
Purchase dated  February 12, 1997 and the related  Letter of Transmittal  (which
together  constitute the "Offer").  An "Early Withdrawal Charge" will be imposed
on most Common Shares accepted for payment that have been held for four years or
less.  The NAV on February 7, 1997,  was  $9.95 per Common Share. The purpose of
the Offer is to provide liquidity to shareholders  since the Trust is unaware of
any  secondary  market  which  exists  for the Common  Shares.  The Offer is not
conditioned upon the tender of any minimum number of Common Shares.

     If more  than  4,000,000  Common  Shares  are  duly  tendered  prior to the
expiration  of  the  Offer,  assuming  no  changes  in  the  factors  originally
considered  by the Board of Trustees  when it  determined  to make the Offer and
subject to the other  conditions  set forth in the Offer,  the Trust will either
extend the Offer,  if  necessary,  and increase the number of Common Shares that
the Trust is  offering  to  purchase  to an  amount  which it  believes  will be
sufficient  to  accommodate  the excess  Common  Shares  tendered as well as any
Common Shares  tendered  during the extended offer period or purchase  4,000,000
(or such larger number of Common Shares sought) of the Common Shares tendered on
a pro rata basis.

     Common Shares  tendered  pursuant to the Offer may be withdrawn at any time
prior to 12:00  Midnight,  New York City  time  on  March 14, 1997,  and, if not
yet accepted for payment by the Trust, Common Shares may also be withdrawn after
April 11, 1997.  To  be effective,  a written,  telegraphic,  telex or facsimile
transmission  notice of withdrawal  must be timely received by Dean Witter Trust
Company,  the Depositary.  Any notice of withdrawal must specify the name of the
person having  tendered the Common Shares to be withdrawn,  the number of Common
Shares to be withdrawn,  and, if  certificates  representing  such Common Shares
have been delivered or otherwise  identified to the Depositary,  the name of the
registered  holder(s) of such Common Shares as set forth in such certificates if
different  from  the  name  of the  person  tendering  such  Common  Shares.  If
certificates  have been delivered to the Depositary,  then, prior to the release
of such certificates,  the Shareholder must also submit the certificate  numbers
shown on the  particular  certificates  evidencing  such  Common  Shares and the
signature  on the  notice  of  withdrawal  must  be  guaranteed  by an  eligible
guarantor acceptable to the Depositary.  Any Common Shares tendered on behalf of
a  shareholder  by Dean Witter  Reynolds  Inc.  may be  withdrawn by Dean Witter
Reynolds Inc.

     The Information  required to be disclosed by paragraph (d)(1) of Rule 13e-4
under the Securities Exchange Act of 1934, as amended, is contained in the Offer
to Purchase and is incorporated herein by reference.

     Neither the Trust nor its Board of Trustees makes any recommendation to any
shareholder as to whether to tender or refrain from tendering any or all of such
shareholder's  Common Shares.  Shareholders are urged to evaluate  carefully all
information  in the Offer to  Purchase,  consult  their own  investment  and tax
advisers and make their own  decisions  whether to tender  Common Shares and, if
so, how many Common Shares to tender.

     The  Offer to  Purchase  and the  related  Letter  of  Transmittal  contain
important  information that should be read carefully before any decision is made
with respect to the Offer.

     Questions  and requests for  assistance  or current NAV  quotations  may be
directed to Dean Witter  InterCapital Inc., Two World Trade Center, New York, NY
10048,  telephone 800-869-3863 extension 61. Requests for copies of the Offer to
Purchase,  Letter of  Transmittal  and any other tender offer  documents  may be
directed to Dean Witter Trust Company at the address and telephone number below.
Copies  will be  furnished  promptly  at no expense to you.

                           Dean Witter Trust Company

                By Mail:                     By Hand Delivery or Courier:
              P.O. Box 984                   Harborside Financial Center
       Jersey City,  New Jersey  07303                 Plaza Two
                                             Jersey City,  New Jersey 07311
                                                Attn: Prime Income Trust

                                               (800) 869-NEWS extension 0
February 12, 1997

================================================================================

<PAGE>
                                                              EXHIBIT (a)(1)(ii)
 
                               OFFER TO PURCHASE
<PAGE>
                               PRIME INCOME TRUST
                      OFFER TO PURCHASE FOR CASH 4,000,000
                  OF ITS ISSUED AND OUTSTANDING COMMON SHARES
                      AT NET ASSET VALUE PER COMMON SHARE
               THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS
                WILL EXPIRE AT 12:00 MIDNIGHT NEW YORK CITY TIME
                ON MARCH 14, 1997, UNLESS THE OFFER IS EXTENDED.
 
To the Holders of Common Shares of
PRIME INCOME TRUST:
 
    Prime  Income  Trust,  a non-diversified,  closed-end  management investment
company organized as a Massachusetts business trust (the "Trust") under the name
"Allstate Prime Income Trust,"  is offering to purchase  up to 4,000,000 of  its
common  shares of beneficial interest, with par value of $.01 per share ("Common
Shares"), for cash at a  price (the "Purchase Price")  equal to their net  asset
value ("NAV") computed as of 4:00 P.M. New York City time on March 14, 1997. The
offer,  proration period and withdrawal rights will expire at 12:00 midnight New
York City  time  on March  14,  1997  (the "Initial  Expiration  Date"),  unless
extended  (the Initial Expiration Date or the  latest date to which the Offer is
extended, the "Expiration  Date"), upon the  terms and conditions  set forth  in
this  Offer to  Purchase and the  related Letter of  Transmittal (which together
constitute the "Offer"). An  Early Withdrawal Charge (as  defined in Section  3)
will  be imposed on most Common Shares  accepted for payment that have been held
for four  years or  less.  The Common  Shares are  not  currently traded  on  an
established  trading market. The  NAV on February  7, 1997 was  $9.95 per Common
Share. Through the Expiration Date, you  can obtain current NAV quotations  from
Dean  Witter  InterCapital  Inc.  ("InterCapital")  by  calling  (800)  869-3863
extension 61 between the hours  of 8:30 A.M. and 6:00  P.M. New York City  time,
Monday through Friday, except holidays. See Section 9.
 
    The Offer is not conditioned upon the tender of any minimum number of Common
Shares.  If more than 4,000,000 Common Shares are tendered, no Common Shares may
be purchased if (a) the  Offer is not extended and  the number of Common  Shares
for  which tenders  are sought is  not increased  to allow the  purchase of such
additional Common Shares or  (b) the Trust elects  not to purchase 4,000,000  of
the  tendered Common Shares on  a pro rata basis.  If more than 4,000,000 Common
Shares are duly tendered prior  to the expiration of  the Offer, subject to  the
condition  that there  have been no  material changes in  the factors originally
considered by the Board of Trustees when it determined to make the Offer and  in
the  other conditions set forth  in Section 6, the  Trust will either extend the
Offer period, if necessary,  and increase the number  of Common Shares that  the
Trust  is offering to purchase to an amount which it believes will be sufficient
to accommodate the excess  Common Shares tendered as  well as any Common  Shares
tendered  during the extended Offer period or purchase 4,000,000 (or such larger
number of Common  Shares sought) of  the Common  Shares tendered on  a pro  rata
basis.
 
                  THIS OFFER IS BEING MADE TO ALL SHAREHOLDERS
                  OF THE TRUST AND IS NOT CONDITIONED UPON ANY
                MINIMUM NUMBER OF COMMON SHARES BEING TENDERED.
 
                            THIS OFFER IS SUBJECT TO
                       CERTAIN CONDITIONS. SEE SECTION 6.
                                   IMPORTANT
 
    If  you desire  to tender  Common Shares, have  a brokerage  account at Dean
Witter Reynolds  Inc.  ("DWR") and  your  Common  Shares are  not  evidenced  by
certificates  in  your possession  you may,  if you  wish, contact  your account
executive and request that he  or she effect the tender  on your behalf. If  you
elect to tender Common Shares through your account executive, you do NOT have to
complete  the Letter of Transmittal.  If you do not  have a brokerage account at
DWR or if your Common Shares are evidenced by
<PAGE>
certificates in  your possession  or you  do not  wish to  tender Common  Shares
through  your account executive, all or any portion of your Common Shares may be
tendered only by completing and signing the Letter of Transmittal and mailing or
delivering it along with any Common Share certificate(s) and any other  required
documents to Dean Witter Trust Company (the "Depositary").
 
    NEITHER  THE TRUST NOR ITS BOARD OF TRUSTEES MAKES ANY RECOMMENDATION TO ANY
SHAREHOLDER AS TO WHETHER TO TENDER OR REFRAIN FROM TENDERING ANY OR ALL OF SUCH
SHAREHOLDER'S COMMON SHARES.  SHAREHOLDERS ARE URGED  TO EVALUATE CAREFULLY  ALL
INFORMATION IN THE OFFER, CONSULT THEIR OWN INVESTMENT AND TAX ADVISERS AND MAKE
THEIR  OWN DECISIONS WHETHER TO TENDER COMMON SHARES AND, IF SO, HOW MANY COMMON
SHARES TO TENDER.
 
    NO PERSON HAS BEEN  AUTHORIZED TO MAKE ANY  RECOMMENDATION ON BEHALF OF  THE
TRUST  AS TO  WHETHER SHAREHOLDERS SHOULD  TENDER COMMON SHARES  PURSUANT TO THE
OFFER. NO PERSON  HAS BEEN AUTHORIZED  TO GIVE  ANY INFORMATION OR  TO MAKE  ANY
REPRESENTATIONS  IN CONNECTION WITH THE OFFER  OTHER THAN THOSE CONTAINED HEREIN
OR IN THE LETTER OF TRANSMITTAL. IF GIVEN OR MADE, SUCH RECOMMENDATION AND  SUCH
INFORMATION  AND  REPRESENTATIONS  MUST  NOT  BE  RELIED  UPON  AS  HAVING  BEEN
AUTHORIZED BY THE TRUST.
 
    Requests for additional copies of this  Offer to Purchase and the Letter  of
Transmittal should be directed to Dean Witter Trust Company at the addresses and
telephone  number set forth below. Questions  and requests for assistance may be
directed to DWR at the telephone number set forth below.
 
February 12, 1997                         PRIME INCOME TRUST
Dean Witter InterCapital Inc.             Depositary: Dean Witter Trust Company
(800) 869-3863
extension 61                              By Mail:
                                          Dean Witter Trust Company
                                          P.O. Box 984
                                          Jersey City, New Jersey 07303
 
                                          By Hand Delivery or Courier:
                                          Dean Witter Trust Company
                                          Harborside Financial Center,
                                          Plaza Two
                                          Jersey City, New Jersey 07311
                                          Attn: Prime Income Trust
 
                                          Telephone: (800) 869-NEWS
                                                    Extension 0
 
                                       2
<PAGE>
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
SECTION                                                      PAGE
- --------                                                     -----
<C>      <S>                                                 <C>
     1.  Price; Number of Common Shares....................     4
 
     2.  Procedure for Tendering Common Shares.............     4
 
     3.  Early Withdrawal Charge...........................     6
 
     4.  Withdrawal Rights.................................     7
 
     5.  Payment for Shares................................     7
 
     6.  Certain Conditions of the Offer...................     8
 
     7.  Purpose of the Offer..............................     8
 
     8.  Plans or Proposals of the Trust...................     9
 
     9.  Price Range of Common Shares; Dividends...........     9
 
    10.  Interest of Trustees and Executive Officers;
          Transactions and Arrangements Concerning the
          Common Shares....................................     9
 
    11.  Certain Effects of the Offer......................    10
 
    12.  Source and Amount of Funds........................    10
 
    13.  Certain Information about the Trust...............    10
 
    14.  Additional Information............................    11
 
    15.  Certain Federal Income Tax Consequences...........    11
 
    16.  Extension of Tender Period; Termination;
          Amendments.......................................    11
 
    17.  Miscellaneous.....................................    12
 
    18.  Financial Statements--September 30, 1996..........    13
 
    19.  Financial Statements--September 30, 1995..........    30
</TABLE>
 
                                       3
<PAGE>
    1.   PRICE;  NUMBER OF COMMON  SHARES.  The  Trust will, upon  the terms and
subject to  the  conditions  of  the Offer,  accept  for  payment  (and  thereby
purchase)  4,000,000 or such lesser number  of its issued and outstanding Common
Shares which are properly tendered (and not withdrawn in accordance with Section
4) prior to 12:00 A.M.,  midnight, New York City time,  on March 14, 1997  (such
time and date being hereinafter called the "Initial Expiration Date"). The Trust
reserves the right to extend the Offer. See Section 16. The later of the Initial
Expiration  Date or the latest  time and date to which  the Offer is extended is
hereinafter called  the "Expiration  Date."  The purchase  price of  the  Common
Shares  will be their  NAV computed as  of 4:00 P.M.  New York City  time on the
Expiration Date. The NAV on February 7, 1997 was $9.95 per Common Share. You can
obtain   current   NAV   quotations   from   Dean   Witter   InterCapital   Inc.
("InterCapital")  by calling (800) 869-3863  extension 61 during normal business
hours. Shareholders tendering  Common Shares  shall be entitled  to receive  all
dividends  declared on or before the Expiration Date, but not yet paid on Common
Shares tendered pursuant to  the Offer. See  Section 9. The  Trust will not  pay
interest  on the  purchase price  under any  circumstances. AN  EARLY WITHDRAWAL
CHARGE WILL BE IMPOSED ON MOST COMMON SHARES ACCEPTED FOR PAYMENT THAT HAVE BEEN
HELD FOR FOUR YEARS OR LESS. SEE SECTION 3.
 
    The Offer  is  being made  to  all shareholders  of  the Trust  and  is  not
conditioned  upon any  minimum number  of Common  Shares being  tendered. If the
number of Common Shares properly tendered  prior to the Expiration Date and  not
withdrawn  is less  than or  equal to 4,000,000  Common Shares  (or such greater
number of Common  Shares as  the Trust  may elect  to purchase  pursuant to  the
Offer),  the Trust  will, upon the  terms and  subject to the  conditions of the
Offer, purchase at  NAV all Common  Shares so tendered.  If more than  4,000,000
Common  Shares are duly  tendered prior to  the expiration of  the Offer and not
withdrawn, subject  to the  condition that  there have  been no  changes in  the
factors  originally considered  by the Board  of Trustees when  it determined to
make the Offer and the other conditions  set forth in Section 6, the Trust  will
either  extend the Offer period, if necessary, and increase the number of Common
Shares that the Trust  is offering to  purchase to an  amount which it  believes
will  be sufficient to accommodate the excess  Common Shares tendered as well as
any Common  Shares  tendered  during  the  extended  Offer  period  or  purchase
4,000,000  (or such larger number of Common  Shares sought) of the Common Shares
tendered on a pro rata basis.
 
    On February  7, 1997,  there were  approximately 109,963,626  Common  Shares
issued  and outstanding and there were approximately 49,061 holders of record of
Common Shares.  The  Trust  has  been advised  that  no  trustees,  officers  or
affiliates  of the  Trust intend  to tender  any Common  Shares pursuant  to the
Offer.
 
    The Trust reserves the right,  in its sole discretion,  at any time or  from
time  to time, to  extend the period of  time during which the  Offer is open by
giving oral or written notice of such  extension to the Depositary and making  a
public announcement thereof. See Section 16. There can be no assurance, however,
that  the  Trust will  exercise  its right  to extend  the  Offer. If  the Trust
decides, in its  sole discretion, to  increase (except for  any increase not  in
excess  of 2% of the outstanding Common Shares) or decrease the number of Common
Shares being sought and, at the time that notice of such increase or decrease is
first published,  sent  or given  to  holders of  Common  Shares in  the  manner
specified  below, the Offer is scheduled to  expire at any time earlier than the
tenth business day from the date that such notice is first so published, sent or
given, the Offer will be  extended at least until the  end of such ten  business
day period.
 
    2.  PROCEDURE FOR TENDERING COMMON SHARES.
 
    PROPER  TENDER OF COMMON SHARES.  If you have a brokerage account at DWR and
your Common Shares are not evidenced by certificates in your possession, you may
contact your account  executive and request  that he or  she tender your  Common
Shares  to the  Depositary on your  behalf. If  you choose to  have your account
executive tender your Common Shares, you do not have to submit any documents  to
the  Depositary. If you do  not wish to have  your account executive tender your
Common Shares  or you  do  not have  a  brokerage account  at  DWR or  you  have
certificates  for  Common Shares  in your  possession, for  Common Shares  to be
properly tendered pursuant to the Offer, a properly completed and duly  executed
Letter  of Transmittal (or manually signed  facsimile thereof) with any required
signature guarantees, any  certificates for  such Common Shares,  and any  other
documents  required by the Letter of Transmittal,  must be received on or before
the Expiration Date by the Depositary at its address set forth on page 2 of this
Offer to Purchase.  If you wish  to tender  your shares on  the Expiration  Date
following the close of business you may do so by calling (201) 938-6499.
 
                                       4
<PAGE>
    It  is a violation of  Section 10(b) of the  Securities Exchange Act of 1934
(the "Exchange Act"),  and Rule 14e-4  promulgated thereunder, for  a person  to
tender  Common  Shares  for  such  person's own  account  unless  the  person so
tendering (a) owns such Common Shares  or (b) owns other securities  convertible
into  or exchangeable for such Common Shares or owns an option, warrant or right
to purchase such Common Shares and  intends to acquire Common Shares for  tender
by conversion, exchange or exercise of such option, warrant or right.
 
    Section 10(b) and Rule 10b-4 provide a similar restriction applicable to the
tender or guarantee of a tender on behalf of another person.
 
    The  acceptance of Common Shares by the  Trust for payment will constitute a
binding agreement between the tendering shareholder and the Trust upon the terms
and  subject  to  the   conditions  of  the   Offer,  including  the   tendering
shareholder's  representation that (i)  such shareholder owns  the Common Shares
being tendered within the meaning of  Rule 10b-4 promulgated under the  Exchange
Act and (ii) the tender of such Common Shares complies with Rule 10b-4.
 
    SIGNATURE  GUARANTEES AND METHOD OF DELIVERY   (only applicable if you are a
shareholder not tendering  Common Shares  through your  DWR account  executive).
Signatures on the Letter of Transmittal are not required to be guaranteed unless
(1)  the Letter of  Transmittal is signed  by someone other  than the registered
holder of the  Common Shares  tendered therewith,  or (2)  payment for  tendered
Common  Shares is to be sent to a  payee other than the registered owner of such
Common Shares and/or  to an  address other than  the registered  address of  the
registered owner of the Common Shares. In those instances, all signatures on the
Letter  of Transmittal must be guaranteed by an eligible guarantor acceptable to
the Depositary  (an  "Eligible  Guarantor")  (shareholders  should  contact  the
Depositary for a determination as to whether a particular institution is such an
Eligible  Guarantor). If Common Shares are registered in the name of a person or
persons other than the signer of the  Letter of Transmittal or if payment is  to
be  made to, unpurchased Common  Shares are to be registered  in the name of, or
any certificates for unpurchased Common Shares are to be returned to any  person
other  than  the  registered  owner,  then the  Letter  of  Transmittal  and, if
applicable,  the  tendered  Common  Share  certificates  must  be  endorsed   or
accompanied by appropriate authorizations, in either case signed exactly as such
name  or  names  appear  on  the registration  of  the  Common  Shares  with the
signatures on  the  certificates or  authorizations  guaranteed by  an  Eligible
Guarantor. See Instructions 1 and 5 of the Letter of Transmittal.
 
    Payment  for Common Shares tendered and accepted for payment pursuant to the
Offer will  be made  (i) if  you have  tendered Common  Shares directly  to  the
Depositary,  only after  receipt by the  Depositary on or  before the Expiration
Date of  a  properly completed  and  duly  executed Letter  of  Transmittal  (or
manually  signed  facsimile thereof)  and any  other  documents required  by the
Letter of Transmittal or (ii) if you have requested DWR to tender Common  Shares
on your behalf, only after receipt by the Depositary on or before the Expiration
Date  of a notice from DWR containing your  name and the number of Common Shares
tendered.  If  your   Common  Shares  are   evidenced  by  certificates,   those
certificates  must be received by  the Depositary on or  prior to the Expiration
Date.
 
    The method of delivery of  any documents, including certificates for  Common
Shares,  is at the  election and risk  of the party  tendering Common Shares. If
documents are sent by mail,  it is recommended that  they be sent by  registered
mail, properly insured, with return receipt requested.
 
    DETERMINATION  OF  VALIDITY.    All  questions  as  to  the  validity, form,
eligibility (including  time  of receipt)  and  acceptance of  tenders  will  be
determined  by the Trust,  in its sole discretion,  whose determination shall be
final and binding. The Trust  reserves the absolute right  to reject any or  all
tenders  determined by it not to be in  appropriate form or the acceptance of or
payment for which may, in the opinion  of the Trust's counsel, be unlawful.  The
Trust  also reserves the  absolute right to  waive any of  the conditions of the
Offer or any defect in any tender  with respect to any particular Common  Shares
or  any particular shareholder, and the Trust's interpretations of the terms and
conditions of the Offer will be final and binding. Unless waived, any defects or
irregularities in connection with tenders must be cured within such times as the
Trust shall determine. Tendered Common Shares  will not be accepted for  payment
unless the defects or irregularities have been cured within such time or waived.
Neither  the Trust, DWR, the Depositary nor  any other person shall be obligated
to give notice of  any defects or  irregularities in tenders,  nor shall any  of
them incur any liability for failure to give such notice.
 
                                       5
<PAGE>
    FEDERAL  INCOME  TAX  WITHHOLDING.   To  prevent backup  federal  income tax
withholding equal to 31% of the gross payments made pursuant to the Offer,  each
shareholder  who has not previously submitted a Substitute Form W-9 to the Trust
or does not otherwise establish an  exemption from such withholding must  notify
the  Depositary of such shareholder's correct taxpayer identification number (or
certify that such  taxpayer is  awaiting a taxpayer  identification number)  and
provide certain other information by completing the Substitute Form W-9 included
in  the Letter of Transmittal. Foreign  shareholders who are individuals and who
have not previously submitted  a Form W-8 to  the Trust must do  so in order  to
avoid backup withholding.
 
    The  Depositary will withhold 30% of the gross payments payable to a foreign
shareholder unless the Depositary determines that a reduced rate of  withholding
or   an  exemption  from  withholding  is  applicable.  (Exemption  from  backup
withholding does not exempt a foreign shareholder from the 30% withholding). For
this purpose, a foreign  shareholder, in general, is  a shareholder that is  not
(i)  a citizen or resident of the United States, (ii) a corporation, partnership
or other entity created or organized in  or under the laws of the United  States
or  any political subdivision thereof, or (iii) an estate or trust the income of
which is subject  to United  States federal  income taxation  regardless of  the
source of such income. The Depositary will determine a shareholder's status as a
foreign shareholder and eligibility for a reduced rate of, or an exemption from,
withholding  by reference  to the shareholder's  address and  to any outstanding
certificates or  statements concerning  eligibility for  a reduced  rate of,  or
exemption  from,  withholding  unless  facts  and  circumstances  indicate  that
reliance is  not  warranted.  A  foreign  shareholder  who  has  not  previously
submitted  the appropriate certificates or statements  with respect to a reduced
rate of,  or exemption  from,  withholding for  which  such shareholder  may  be
eligible  should consider doing so in order to avoid over-withholding. A foreign
shareholder may  be  eligible  to  obtain  a refund  of  tax  withheld  if  such
shareholder  meets one  of the  three tests for  capital gain  or loss treatment
described in Section  15 or  is otherwise  able to establish  that no  tax or  a
reduced amount of tax was due.
 
    For  a  discussion  of  certain other  federal  income  tax  consequences to
tendering shareholders, see Section 15.
 
    3.  EARLY WITHDRAWAL CHARGE.  The Depositary will impose an early withdrawal
charge (the  "Early  Withdrawal Charge")  on  most Common  Shares  accepted  for
payment which have been held for four years or less. The Early Withdrawal Charge
will  be imposed on a number of Common Shares accepted for payment from a record
holder of Common Shares the  value of which exceeds  the aggregate value at  the
time  the tendered  Common Shares  are accepted  for payment  of (a)  all Common
Shares owned by such holder  that were purchased more  than four years prior  to
such  acceptance, (b) all Common Shares owned  by such holder that were acquired
through reinvestment of dividends  and distributions, and  (c) the increase,  if
any,  of value of  all other Common  Shares owned by  such holder (namely, those
purchased within  the four  years  preceding acceptance  for payment)  over  the
purchase  price of such Common Shares. The  Early Withdrawal Charge will be paid
to InterCapital on  behalf of the  holder of the  Common Shares. In  determining
whether  an  Early  Withdrawal Charge  is  payable, Common  Shares  accepted for
payment pursuant  to  the  Offer shall  be  deemed  to be  those  Common  Shares
purchased  earliest by  the shareholder.  Any Early  Withdrawal Charge  which is
required to be imposed will be made in accordance with the following schedule.
 
<TABLE>
<CAPTION>
                                                       EARLY
                     YEAR OF REPURCHASE              WITHDRAWAL
                       AFTER PURCHASE                  CHARGE
          ----------------------------------------  ------------
          <S>                                       <C>
          First...................................       3.0%
          Second..................................       2.5%
          Third...................................       2.0%
          Fourth..................................       1.0%
          Fifth and following.....................       0.0%
</TABLE>
 
    The following example will illustrate the operation of the Early  Withdrawal
Charge.  Assume that  an investor  purchases $1000  worth of  the Trust's Common
Shares for cash  and that 21  months later the  value of the  account has  grown
through  the reinvestment of  dividends and capital  appreciation to $1,200. The
investor then may submit for  repurchase pursuant to a  tender offer up to  $200
worth  of Common  Shares without  incurring an  Early Withdrawal  Charge. If the
investor should submit for repurchase pursuant to a
 
                                       6
<PAGE>
tender offer $500 worth  of Common Shares, an  Early Withdrawal Charge would  be
imposed  on  $300 worth  of the  Common  Shares submitted.  The charge  would be
imposed at the rate of 2.5% because it is in the second year after the  purchase
was made and the charge would be $7.50.
 
    4.   WITHDRAWAL  RIGHTS.   Except as otherwise  provided in  this Section 4,
tenders of Common Shares made pursuant to the Offer will be irrevocable. If  you
desire  to  withdraw Common  Shares  tendered on  your  behalf by  DWR,  you may
withdraw by contacting your DWR account executive and instructing him or her  to
withdraw such Common Shares, or by calling (201) 938-6499 on the Expiration Date
following  the close of business. You may withdraw Common Shares tendered at any
time prior to the Expiration  Date and, if the Common  Shares have not yet  been
accepted  for payment by the Trust, at any  time after 12:01 A.M., New York City
time, on April 11, 1997.
 
    To be effective,  a written,  telegraphic, telex  or facsimile  transmission
notice  of withdrawal must be  timely received by the  Depositary at the address
set forth on page  2 of this  Offer to Purchase. Any  notice of withdrawal  must
specify  the  name  of  the  person having  tendered  the  Common  Shares  to be
withdrawn, the number  of Common Shares  to be withdrawn,  and, if  certificates
representing  such Common Shares have been  delivered or otherwise identified to
the Depositary, the name  of the registered holder(s)  of such Common Shares  as
set  forth  in  such certificates  if  different  from the  name  of  the person
tendering such  Common  Shares.  If  certificates have  been  delivered  to  the
Depositary,  then,  prior to  the release  of such  certificates, you  must also
submit the certificate numbers shown  on the particular certificates  evidencing
such  Common  Shares and  the  signature on  the  notice of  withdrawal  must be
guaranteed by an Eligible Guarantor.
 
    All questions as  to the form  and validity (including  time of receipt)  of
notices  of withdrawal will be  determined by the Trust  in its sole discretion,
whose determination shall  be final  and binding. None  of the  Trust, DWR,  the
Depositary or any other person is or will be obligated to give any notice of any
defects  or irregularities in  any notice of  withdrawal, and none  of them will
incur any liability for failure to give any such notice. Common Shares  properly
withdrawn  shall not  thereafter be  deemed to be  tendered for  purposes of the
Offer. However,  withdrawn Common  Shares  may be  retendered by  following  the
procedures described in Section 2 prior to the Expiration Date.
 
    5.  PAYMENT FOR SHARES.  For purposes of the Offer, the Trust will be deemed
to  have accepted  for payment (and  thereby purchased) Common  Shares which are
tendered and not withdrawn when,  as and if it gives  oral or written notice  to
the  Depositary of its acceptance of such  Common Shares for payment pursuant to
the Offer. Upon the terms and subject to the conditions of the Offer, the  Trust
will,  promptly  after  the Expiration  Date,  accept for  payment  (and thereby
purchase) Common Shares properly tendered prior to the Expiration Date.
 
    Payment for Common Shares  purchased pursuant to the  Offer will be made  by
the  Depositary out of funds  made available to it  by the Trust. The Depositary
will act  as agent  for  tendering shareholders  for  the purpose  of  effecting
payment  to  the tendering  shareholders.  If your  tender  of Common  Shares is
effected through DWR, payment  for Common Shares will  be deposited directly  to
your DWR brokerage account. In all cases, payment for Common Shares accepted for
payment  pursuant to  the Offer will  be made (i)  if you have  requested DWR to
tender Common Shares on your behalf, only after timely receipt by the Depositary
of a  notice from  DWR containing  your name  and the  number of  Common  Shares
tendered  or (ii) if you have tendered Common Shares directly to the Depositary,
only after timely receipt by the Depositary, as required pursuant to the  Offer,
of  a properly  completed and duly  executed Letter of  Transmittal (or manually
signed facsimile thereof), any certificates representing such Common Shares,  if
issued,  and any  other required documents.  Certificates for  Common Shares not
purchased (see Sections 1 and 6), or for Common Shares not tendered included  in
certificates  forwarded to the  Depositary, will be  returned promptly following
the termination, expiration or withdrawal of  the Offer, without expense to  the
tendering shareholder.
 
    The Trust will pay all transfer taxes, if any, payable on the transfer to it
of  Common Shares purchased pursuant  to the Offer. If,  however, payment of the
purchase price is  to be  made to,  or (in  the circumstances  permitted by  the
Offer)  if unpurchased  Common Shares are  to be  registered in the  name of any
person other than the  registered holder, or if  tendered certificates, if  any,
are  registered or the Common Shares tendered are held in the name of any person
other than  the person  signing the  Letter of  Transmittal, the  amount of  any
transfer  taxes (whether imposed on the  registered holder or such other person)
payable on
 
                                       7
<PAGE>
account of the transfer to such person will be deducted from the Purchase  Price
unless  satisfactory  evidence  of  the  payment  of  such  taxes,  or exemption
therefrom, is submitted. Shareholders tendering Common Shares shall be  entitled
to  receive all dividends declared on or before the Expiration Date, but not yet
paid, on Common Shares tendered  pursuant to the Offer.  The Trust will not  pay
any  interest on the Purchase Price under any circumstances. An Early Withdrawal
Charge will be imposed on most Common Shares accepted for payment that have been
held for four  years or  less. See  Section 3.  In addition,  if certain  events
occur,  the Trust may not be obligated to purchase Common Shares pursuant to the
Offer. See Section 6.
 
    Any tendering shareholder or other payee who has not previously submitted  a
completed  and signed Substitute  Form W-9 and  who fails to  complete fully and
sign the Substitute  Form W-9 in  the Letter  of Transmittal may  be subject  to
required  federal income tax  withholding of 31%  of the gross  proceeds paid to
such shareholder or other payee pursuant to the Offer. See Section 2.
 
    6.  CERTAIN CONDITIONS OF THE OFFER.  Notwithstanding any other provision of
the Offer, the Trust shall  not be required to  accept for payment, purchase  or
pay  for any Common Shares tendered, and may terminate or amend the Offer or may
postpone the acceptance for payment of,  the purchase of and payment for  Common
Shares  tendered, if at any time  at or before the time  of purchase of any such
Common Shares, any of  the following events shall  have occurred (or shall  have
been  determined  by the  Trust to  have  occurred) which,  in the  Trust's sole
judgment in any  such case and  regardless of the  circumstances (including  any
action  or omission to act  by the Trust), makes  it inadvisable to proceed with
the Offer or with such purchase or payment: (1) a secondary market develops  for
the  Common Shares;  (2) in  the reasonable  business judgment  of the Trustees,
there is  not  sufficient  liquidity  of  the assets  of  the  Trust;  (3)  such
transactions, if consummated, would (a) impair the Trust's status as a regulated
investment  company under the Internal Revenue Code (which would make the Fund a
taxable entity,  causing the  Fund's taxable  income to  be taxed  at the  Trust
level)  or (b)  result in  a failure  to comply  with applicable  asset coverage
requirements; or  (4) there  is, in  the Board  of Trustees'  judgment, any  (a)
material  legal action or  proceeding instituted or  threatened challenging such
transactions  or  otherwise  materially  adversely  affecting  the  Trust,   (b)
suspension  of or limitation  on prices for trading  securities generally on the
New York Stock Exchange, (c) declaration  of a banking moratorium by federal  or
state  authorities or any suspension of payment by banks in the United States or
New York  State,  (d) limitation  affecting  the Trust  or  the issuers  of  its
portfolio securities imposed by federal or state authorities on the extension of
credit  by lending institutions,  (e) commencement of  war, armed hostilities or
other international or  national calamity directly  or indirectly involving  the
United  States  or (f)  other event  or  condition which  would have  a material
adverse effect on the Trust or the holders of its Common Shares if the  tendered
Common Shares are purchased.
 
    The  foregoing  conditions  are for  the  Trust's  sole benefit  and  may be
asserted by the Trust  regardless of the circumstances  giving rise to any  such
condition  (including  any  action  or  inaction by  the  Trust),  and  any such
condition may be waived by the Trust in  whole or in part, at any time and  from
time to time in its sole discretion. The Trust's failure at any time to exercise
any  of the foregoing rights shall not be deemed a waiver of any such right; the
waiver of any  such right  with respect  to particular  facts and  circumstances
shall  not be deemed a waiver with  respect to any other facts or circumstances;
and each such right shall  be deemed an ongoing right  which may be asserted  at
any  time and from time  to time. Any determination  by the Trust concerning the
events described in this Section  6 shall be final and  shall be binding on  all
parties.
 
    If  the Trust determines to terminate or  amend the Offer or to postpone the
acceptance for payment of or payment for Common Shares tendered, it will, to the
extent necessary, extend the period  of time during which  the Offer is open  as
provided  in Section 16. Moreover, in the  event any of the foregoing conditions
are modified or waived in whole or in part at any time, the Trust will  promptly
make  a public announcement of such waiver and may, depending on the materiality
of the modification or  waiver, extend the Offer  period as provided in  Section
16.
 
    7.   PURPOSE  OF THE OFFER.   The Trust  currently does not  believe that an
active secondary market for its Common Shares exists or is likely to develop. In
recognition of the possibility that a  secondary market may not develop for  the
Common  Shares of  the Trust,  or, if such  a market  were to  develop, that the
Common Shares might trade  at a discount, the  Trustees have determined that  it
would  be in the best interest of its  shareholders for the Trust to take action
to attempt to provide  liquidity to shareholders or  to reduce or eliminate  any
future  market value discount from NAV that might otherwise exist, respectively.
To that end,  the Trustees presently  intend each quarter  to consider making  a
tender offer to purchase Common Shares
 
                                       8
<PAGE>
at  their NAV. The purpose  of this Offer is to  attempt to provide liquidity to
the holders of Common  Shares. There can  be no assurance  that this Offer  will
provide sufficient liquidity to all holders of Common Shares that desire to sell
their  Common Shares or  that the Trust will  make any such  tender offer in the
future.
 
    NEITHER THE TRUST NOR ITS BOARD OF TRUSTEES MAKES ANY RECOMMENDATION TO  ANY
SHAREHOLDER AS TO WHETHER TO TENDER OR REFRAIN FROM TENDERING ANY OR ALL OF SUCH
SHAREHOLDER'S  COMMON SHARES AND HAS NOT AUTHORIZED  ANY PERSON TO MAKE ANY SUCH
RECOMMENDATION. SHAREHOLDERS ARE URGED TO EVALUATE CAREFULLY ALL INFORMATION  IN
THE  OFFER, CONSULT  THEIR OWN  INVESTMENT AND TAX  ADVISERS AND  MAKE THEIR OWN
DECISIONS WHETHER TO TENDER COMMON SHARES AND, IF SO, HOW MANY COMMON SHARES  TO
TENDER.
 
    8.   PLANS OR  PROPOSALS OF THE  TRUST.  The  Trust has no  present plans or
proposals which relate to or would result in any extraordinary transaction  such
as  a  merger, reorganization  or  liquidation involving  the  Trust; a  sale or
transfer of a material amount of assets of the Trust other than in its  ordinary
course  of business; any material changes  in the Trust's present capitalization
(except as resulting from the Offer or otherwise set forth herein); or any other
material changes in the Trust's structure or business.
 
    9.  PRICE RANGE  OF COMMON SHARES;  DIVIDENDS.  The  Trust's NAV per  Common
Share  on February 7, 1997 was $9.95. You can obtain current NAV quotations from
InterCapital by calling (800) 869-3863 extension 61 or by calling (201) 938-6499
on the Expiration  Date following the  close of business.  The Trust offers  and
sells  its Common Shares to the public on a continuous basis through Dean Witter
Distributors Inc. (the "Distributor") as principal underwriter. The Trust is not
aware of any secondary  market trading for the  Common Shares. Dividends on  the
Common Shares are declared daily and paid monthly. Shareholders tendering Common
Shares  shall be  entitled to  receive all dividends  declared on  or before the
Expiration Date, but  not yet paid,  on Common Shares  tendered pursuant to  the
Offer.
 
    10.     INTEREST  OF  TRUSTEES  AND  EXECUTIVE  OFFICERS;  TRANSACTIONS  AND
ARRANGEMENTS CONCERNING THE COMMON SHARES.  As of February 7, 1997 the  Trustees
and  executive officers  of the  Trust as a  group beneficially  owned no Common
Shares. The Trust has been informed that no Trustee or executive officer of  the
Trust intends to tender any Common Shares pursuant to the Offer.
 
    Except  as set forth in this Section  10, based upon the Trust's records and
upon information provided to the Trust  by its Trustees, executive officers  and
affiliates (as such term is used in the Exchange Act), neither the Trust nor, to
the  best of the Trust's knowledge, any of the Trustees or executive officers of
the Trust,  nor  any  associates of  any  of  the foregoing,  has  effected  any
transactions  in the Common Shares during the forty business day period prior to
the date hereof.
 
    Except as set forth in this Offer to Purchase, neither the Trust nor, to the
best of the  Trust's knowledge,  any of  its affiliates,  Trustees or  executive
officers, is a party to any contract, arrangement, understanding or relationship
with  any  other person  relating,  directly or  indirectly,  to the  Offer with
respect to  any securities  of the  Trust (including,  but not  limited to,  any
contract,  arrangement, understanding or relationship concerning the transfer or
the voting of any such securities, joint ventures, loan or option  arrangements,
puts  or calls, guaranties  of loans, guaranties  against loss or  the giving or
withholding of proxies, consents or authorizations).
 
    The Trust is a party to a Hold Harmless Agreement with DWR pursuant to which
DWR indemnifies the Trust from any loss it may suffer as a result of the use  of
DWR  to  effect  a  tender or  withdrawal  of  Common Shares  on  behalf  of its
customers.
 
    The Trust and the Depositary have entered into a Depositary Agreement  dated
as  of February 7, 1997, pursuant to  which the Depositary will perform services
for the Trust  in connection  with the tender  and withdrawal  of Common  Shares
pursuant to the Offer.
 
    The  Trust currently  is a  party to  an Investment  Advisory Agreement with
InterCapital (the  "Adviser")  under which  the  Trust accrues  daily  and  pays
monthly  to the Adviser an investment advisory fee equal to 0.90% of the average
daily net assets of the  Trust up to $500 million,  and 0.85% of the portion  of
average  daily net  assets over $500  million. The Trust  also is a  party to an
Administration Agreement with Dean
 
                                       9
<PAGE>
Witter Services Company, Inc.,  a wholly owned  subsidiary of InterCapital  (the
"Administrator")  and a Distribution  Agreement with the  Distributor. Under the
Administration Agreement, the Trust pays the Administrator a monthly fee at  the
annualized  rate of  .25% of  the Trust's  average daily  net assets.  Under the
Distribution Agreement, the  Trust offers  and sells  its Common  Shares to  the
public on a continuous basis through the Distributor as principal underwriter.
 
    11.   CERTAIN EFFECTS OF THE OFFER.   The purchase of Common Shares pursuant
to the Offer will  have the effect of  increasing the proportionate interest  in
the  Trust of shareholders who do not  tender their Common Shares. If you retain
your Common Shares you will  be subject to any  increased risks that may  result
from  the reduction in  the Trust's aggregate assets  resulting from payment for
the  tendered  Common  Shares  (e.g.,   greater  volatility  due  to   decreased
diversification and higher expenses). However, the Trust believes that since the
Trust  is engaged  in a  continuous offering of  the Common  Shares, those risks
would be reduced  to the extent  new Common Shares  of the Trust  are sold.  All
Common  Shares purchased  by the  Trust pursuant  to the  Offer will  be held in
treasury pending disposition.
 
    12.  SOURCE AND AMOUNT OF FUNDS.  The total cost to the Trust of  purchasing
4,000,000  Common Shares pursuant to the Offer will be approximately $39,800,000
(assuming a NAV  of $9.95  per Common  Share on  the Expiration  Date) plus  the
expenses  incurred  by  the  Trust  in  connection  with  the  Offer.  The Trust
anticipates that the Purchase Price for  any Common Shares acquired pursuant  to
the  Offer will first be derived from cash  on hand, such as proceeds from sales
of new Common Shares of the Trust and specified pay-downs from the participation
interests in senior  corporate loans which  it has acquired,  and then from  the
proceeds from the sale of cash equivalents held by the Trust. Although the Trust
is  authorized to borrow money  to finance the repurchase  of Common Shares, the
Trustees believe that the Trust has sufficient liquidity to purchase the  Common
Shares tendered pursuant to the Offer without utilizing such borrowing. However,
if,  in the judgment of  the Trustees, there is  not sufficient liquidity of the
assets of the Trust to pay for  tendered Common Shares, the Trust may  terminate
the Offer. See Section 6.
 
    13.   CERTAIN  INFORMATION ABOUT THE  TRUST.   The Trust was  organized as a
Massachusetts business trust, under the  name "Allstate Prime Income Trust",  on
August  17,  1989 and  is  a non-diversified,  closed-end  management investment
company under the Investment Company  Act of 1940. The  name was changed to  its
present  form effective March 1,  1993. The Trust seeks  a high level of current
income  consistent  with  the  preservation   of  capital  by  investing  in   a
professionally  managed  portfolio of  interests  in floating  or  variable rate
senior loans ("Senior Loans") to  corporations, partnerships and other  entities
("Borrowers").  Senior Loans may  take the form  of syndicated loans  or of debt
obligations of  Borrowers issued  directly  to investors  in  the form  of  debt
securities  ("Senior Notes").  Although the Trust's  NAV will  vary, the Trust's
policy of  acquiring interests  in floating  or variable  rate Senior  Loans  is
expected  to minimize fluctuations in the Trust's  NAV as a result of changes in
interest rates. Senior Loans in which  the Trust invests generally pay  interest
at rates which are periodically redetermined by reference to a base lending rate
plus a premium. These base lending rates are generally the prime rate offered by
a  major United States bank ("Prime  Rate"), the London Inter-Bank Offered Rate,
the certificate of deposit rate or  other base lending rates used by  commercial
lenders.  The Trust  seeks to  achieve over  time an  effective yield  that will
exceed money market rates  and will track the  movements in the published  Prime
Rate of major United States banks, although it may not equal the Prime Rate. The
Senior  Loans  in the  Trust's  portfolio at  all  times have  a dollar-weighted
average time until next interest rate redetermination  of 90 days or less. As  a
result, as short-term interest rates increase, the interest payable to the Trust
from its investments in Senior Loans should increase, and as short-term interest
rates  decrease, the interest payable to the  Trust on its investments in Senior
Loans should decrease.  The amount  of time required  to pass  before the  Trust
realizes  the  effects  of  changing short-term  market  interest  rates  on its
portfolio varies with the dollar-weighted average time until next interest  rate
redetermination on securities in the Trust's portfolio.
 
    The  Trust has registered as a "non-diversified" investment company so that,
subject to its investment restrictions, it is able to invest more than 5% of the
value of its assets  in the obligations of  any single issuer, including  Senior
Loans  of a single Borrower  or participations in Senior  Loans purchased from a
single lender or  selling participant.  However, the  Trust does  not intend  to
invest  more than 10%  of the value of  its total assets  in interests in Senior
Loans of  a single  Borrower. To  the extent  the Trust  invests its  assets  in
 
                                       10
<PAGE>
obligations  of a more  limited number of issuers  than a diversified investment
company, the  Trust will  be more  susceptible than  a more  widely  diversified
investment  company to any  single corporate, economic,  political or regulatory
occurrence.
 
    The principal executive offices of the Trust are located at Two World  Trade
Center, New York, N.Y. 10048.
 
    Reference  is hereby  made to Section  9 of  this Offer to  Purchase and the
financial statements attached hereto as Exhibit A which are incorporated  herein
by reference.
 
    14.   ADDITIONAL INFORMATION.   The Trust has filed  a statement on Schedule
13E-4 with  the  Securities and  Exchange  Commission (the  "Commission")  which
includes certain additional information relating to the Offer. Such material may
be inspected and copied at prescribed rates at the Commission's public reference
facilities  at Judiciary Plaza,  450 Fifth Street,  N.W., Washington, D.C. 10549
and 75 Park Place, New York, New York 10007. Copies of such material may also be
obtained by mail  at prescribed rates  from the Public  Reference Branch of  the
Commission at 450 Fifth Street, N.W., Washington, D.C. 20549.
 
    15.  CERTAIN FEDERAL INCOME TAX CONSEQUENCES.  The following discussion is a
general  summary of  the federal  income tax  consequences of  a sale  of Common
Shares pursuant to the Offer. Shareholders should consult their own tax advisers
regarding the tax consequences of a sale of Common Shares pursuant to the Offer,
as well as the effects of state,  local and foreign tax laws. See also  "Federal
Income Tax Withholding," supra.
 
    The  sale  of  Common  Shares  pursuant  to  the  Offer  will  be  a taxable
transaction for Federal income tax purposes, either as a "sale or exchange,"  or
under  certain  circumstances,  as a  "dividend."  Under Section  302(b)  of the
Internal Revenue Code of 1986, as amended (the "Code"), a sale of Common  Shares
pursuant  to the Offer generally will be treated  as a "sale or exchange" if the
receipt of cash: (a)  results in a "complete  termination" of the  shareholder's
interest  in the Trust, (b) is  "substantially disproportionate" with respect to
the shareholder,  or (c)  is "not  essentially equivalent  to a  dividend"  with
respect  to the shareholder. In determining whether  any of these tests has been
met, Common Shares  actually owned, as  well as Common  Shares considered to  be
owned  by the shareholder by reason  of certain constructive ownership rules set
forth in Section 318 of the Code,  generally must be taken into account. If  any
of these three tests for "sale or exchange" treatment is met, a shareholder will
recognize  gain  or loss  equal to  the  difference between  the amount  of cash
received pursuant to the Offer and the  tax basis of the Common Shares sold.  If
such  Common Shares  are held as  a capital  asset, the gain  or loss  will be a
capital gain or loss.
 
    If none of the tests set forth in Section 302(b) of the Code is met, amounts
received by a shareholder who sells Common Shares pursuant to the Offer will  be
taxable  to the shareholder as a "dividend"  to the extent of such shareholder's
allocable share of the Trust's current  or accumulated earnings or profits,  and
the  excess  of such  amounts received  over the  portion that  is taxable  as a
dividend would constitute a non-taxable return of capital (to the extent of  the
shareholder's tax basis in the Common Shares sold pursuant to the Offer) and any
amounts  in excess of the shareholder's tax basis would constitute taxable gain.
If the amounts received by a tendering Shareholder are treated as a  "dividend",
the  tax basis in the Common Shares tendered to the Trust will be transferred to
any remaining Common Shares held by  such shareholder. In addition, if a  tender
of  Common Shares  is treated  as a "dividend"  to a  tendering shareholder, the
Internal Revenue Service may take the position that a constructive  distribution
under Section 305(c) of the Code may result to a shareholder whose proportionate
interest  in the  earnings and assets  of the  Trust has been  increased by such
tender.
 
    16.   EXTENSION  OF  TENDER  PERIOD; TERMINATION;  AMENDMENTS.    The  Trust
reserves  the right, at any time and from  time to time, to extend the period of
time during which the Offer is pending by making a public announcement  thereof.
In  the event that the Trust so elects  to extend the tender period, the NAV for
the Common Shares tendered will be computed  as of 4:00 P.M. New York City  time
on  the  Expiration Date,  as extended.  During any  such extension,  all Common
Shares previously tendered and not purchased or withdrawn will remain subject to
the Offer. The Trust also reserves the right, at any time and from time to  time
up  to and including the Expiration Date, to  (a) terminate the Offer and not to
purchase or pay for  any Common Shares or,  subject to applicable law,  postpone
payment for Common Shares upon the occurrence of any of the conditions specified
in  Section  6  and (b)  amend  the Offer  in  any  respect by  making  a public
announcement thereof. Such public announcement will be issued no later than 9:00
A.M. New York City
 
                                       11
<PAGE>
time on the next business day after the previously scheduled Expiration Date and
will disclose the approximate number of Common Shares tendered as of that  date.
Without  limiting the  manner in  which the  Trust may  choose to  make a public
announcement of  extension,  termination or  amendment,  except as  provided  by
applicable  law (including Rule 13e-4(e)(2)), the Trust shall have no obligation
to publish, advertise or otherwise communicate any such public announcement.
 
    If the Trust materially  changes the terms of  the Offer or the  information
concerning  the Offer, or  if it waives  a material condition  of the Offer, the
Trust will extend  the Offer  to the extent  required by  Rules 13e-4(d)(2)  and
13e-4(e)(2)  promulgated under  the Exchange Act.  These rules  require that the
minimum period during which an offer must remain open following material changes
in the terms  of the offer  or information  concerning the offer  (other than  a
change  in price or a change in  percentage of securities sought) will depend on
the facts and circumstances, including the relative materiality of such terms or
information. If (i) the Trust  increases or decreases the  price to be paid  for
Common  Shares, or the Trust increases the  number of Common Shares being sought
by an  amount  exceeding 2%  of  the outstanding  Common  Shares, or  the  Trust
decreases  the  number of  Common  Shares being  sought  and (ii)  the  Offer is
scheduled to expire at any time earlier  than the expiration of a period  ending
on  the tenth  business day from,  and including,  the date that  notice of such
increase or  decrease is  first published,  sent  or given,  the Offer  will  be
extended at least until the expiration of such period of ten business days.
 
    17.   MISCELLANEOUS.   The Offer  is not being  made to, nor  will the Trust
accept tenders from, owners  of Common Shares in  any jurisdiction in which  the
Offer or its acceptance would not comply with the securities or Blue Sky laws of
such  jurisdiction. The  Trust is  not aware  of any  jurisdiction in  which the
making of the Offer or  the tender of Common Shares  would not be in  compliance
with  the laws of  such jurisdiction. However,  the Trust reserves  the right to
exclude holders  in any  jurisdiction in  which it  is asserted  that the  Offer
cannot  lawfully be  made. So  long as  the Trust  makes a  good-faith effort to
comply with any  state law deemed  applicable to the  Offer, the Trust  believes
that  the exclusions of holders residing in such jurisdiction is permitted under
Rule 13e-4(f)(9) promulgated  under the  Exchange Act. In  any jurisdiction  the
securities  or Blue Sky laws of which require the Offer to be made by a licensed
broker or dealer, the Offer shall be deemed to be made on the Trust's behalf  by
Dean Witter Reynolds Inc.
 
                                          Prime Income Trust
 
February 12, 1997
 
                                       12
<PAGE>
18.  FINANCIAL STATEMENTS--SEPTEMBER 30, 1996
 
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1996
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                                INTEREST       MATURITY
 THOUSANDS                                                  RATE           DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                       <C>              <C>         <C>
             SENIOR COLLATERALIZED TERM LOANS (a) (93.0%)
             ADVERTISING (3.3%)
 $   7,250   Eller Media Co..........................        8.69%        12/21/03  $     7,249,637
     5,844   Outdoor Systems, Inc....................        9.03         12/31/02        5,844,101
     5,844   Outdoor Systems, Inc....................        9.03         12/31/03        5,844,101
    12,000   Treasure Chest Advertising Co., Inc.....        7.94         12/31/02       12,000,000
                                                                                    ---------------
                                                                                         30,937,839
                                                                                    ---------------
             AEROSPACE (1.3%)
       561   Gulf Stream Aerospace Corp..............        7.63         03/31/97          560,565
     2,900   Gulf Stream Aerospace Corp..............        8.69         03/31/98        2,899,043
     5,608   Howmet Corp.............................        8.50         11/20/02        5,608,102
     3,105   Howmet Corp.............................        8.75         05/20/03        3,104,820
                                                                                    ---------------
                                                                                         12,172,530
                                                                                    ---------------
             AIR FREIGHT (1.1%)
     5,000   Continental Micronesia, Inc.
             (Participation: Bankers Trust Co.)
             (b).....................................        7.25         07/31/01        4,998,550
     5,000   Continental Micronesia, Inc.............        7.25         07/31/01        4,998,550
                                                                                    ---------------
                                                                                          9,997,100
                                                                                    ---------------
             APPAREL (1.9%)
       866   Anvil Knitwear, Inc.....................        7.94         02/03/01          866,718
     8,936   Anvil Knitwear, Inc.....................  8.94 to 10.25      02/02/02        8,934,967
     4,525   Hosiery Corporation of America, Inc.....     8.75 to 9.06    07/31/01        4,525,043
       277   London Fog Industries, Inc.*............          0.00       05/31/02          263,580
     2,823   London Fog Industries, Inc..............          9.25   +   05/31/02        2,681,831
       581   London Fog Industries, Inc. (c).........         12.50       05/31/02          551,691
                                                                                    ---------------
                                                                                         17,823,830
                                                                                    ---------------
             AUTO PARTS (1.8%)
     9,444   Hayes Wheels International, Inc.........     8.47 to 8.60    07/31/03        9,444,603
     7,555   Hayes Wheels International, Inc.........     8.97 to 9.10    07/31/04        7,555,580
                                                                                    ---------------
                                                                                         17,000,183
                                                                                    ---------------
             BEVERAGES - SOFT DRINKS (1.1%)
     3,960   Select Beverages, Inc...................     8.75 to 9.06    06/30/01        3,959,557
     5,940   Select Beverages, Inc...................     9.00 to 9.19    06/30/02        5,939,403
                                                                                    ---------------
                                                                                          9,898,960
                                                                                    ---------------
             BREWERS (1.6%)
    15,000   The Stroh Brewery Co....................          8.56       06/30/01       15,000,000
                                                                                    ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       13
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1996, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                                INTEREST       MATURITY
 THOUSANDS                                                  RATE           DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                       <C>              <C>         <C>
             BROADCAST MEDIA (4.1%)
 $   3,500   Benedek Broadcasting Corp...............        8.50%        05/01/01  $     3,500,070
     3,500   Benedek Broadcasting Corp...............        9.00         11/01/02        3,500,070
     4,971   Chancellor Broadcasting Co..............        8.25         09/01/03        4,971,528
    10,000   Citicasters, Inc........................        8.19         09/18/04        9,999,900
     9,587   River City Broadcasting, L.P............        8.63         12/31/99        9,587,239
     6,522   Silver King Communications, Inc.........        8.44         07/31/02        6,521,457
                                                                                    ---------------
                                                                                         38,080,264
                                                                                    ---------------
             BUILDING MATERIALS (1.3%)
    12,479   National Gypsum Co......................  7.84 to 8.00       09/30/03       12,478,470
                                                                                    ---------------
             BUSINESS SERVICES (1.7%)
     8,000   Experian Information Solutions, Inc.....          8.63       09/18/03        7,999,600
     8,000   Experian Information Solutions, Inc.....          9.13       09/18/04        7,999,520
                                                                                    ---------------
                                                                                         15,999,120
                                                                                    ---------------
             CABLE TELEVISION EQUIPMENT (1.1%)
    10,000   Marcus Cable Operating Co. L.P..........     8.22 to 8.44    04/30/04       10,000,347
                                                                                    ---------------
             CABLE/CELLULAR (5.9%)
    10,000   Charter Communications Entertainment I,
             L.P.....................................          8.25       12/31/04       10,000,100
    25,000   Nextel Communications, Inc..............         10.25       06/30/03       25,000,000
    20,000   Western Wireless Corp...................          8.31       03/31/05       19,999,800
                                                                                    ---------------
                                                                                         54,999,900
                                                                                    ---------------
             COAL (0.7%)
     7,000   Alliance Coal Corp......................          8.88       12/31/02        6,999,650
                                                                                    ---------------
             CONSUMER PRODUCTS (1.7%)
     6,411   Chattem, Inc............................    8.23 to 10.50    10/29/03        6,412,501
    10,000   Revlon Consumer Products Corp...........     8.00 to 8.19    03/31/99        9,998,854
                                                                                    ---------------
                                                                                         16,411,355
                                                                                    ---------------
             CONTAINERS (1.8%)
    16,794   Silgan Corporations.....................     8.53 to 8.75    03/15/02       16,791,581
                                                                                    ---------------
             CONVENIENCE STORES (1.0%)
     9,456   Cumberland Farms, Inc. (Participation:
             Merrill Lynch & Co., Inc.) (b)..........          8.75       12/31/98        9,455,898
                                                                                    ---------------
             DRUG STORES (1.2%)
     7,500   Duane Reade, Inc........................          9.50       12/31/99        7,498,950
     3,549   M & H Drugs, Inc........................          9.63       12/31/96        3,548,835
                                                                                    ---------------
                                                                                         11,047,785
                                                                                    ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       14
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1996, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                                INTEREST       MATURITY
 THOUSANDS                                                  RATE           DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                       <C>              <C>         <C>
             ELECTRONICS (1.1%)
 $   6,000   Details, Inc............................        8.50%        01/31/02  $     5,997,300
     3,975   Vernitron Corp..........................  9.38 to 10.50      04/25/02        3,975,119
                                                                                    ---------------
                                                                                          9,972,419
                                                                                    ---------------
             ENTERTAINMENT & LEISURE TIME (4.4%)
    10,726   AMF Group, Inc..........................          8.44       03/31/03       10,724,163
     4,228   AMF Group, Inc..........................          8.69       03/31/04        4,227,372
    14,438   Orion Pictures Corp.....................     8.06 to 8.13    06/30/01       14,437,261
    11,707   Six Flags Theme Parks, Inc..............          8.44       06/23/03       11,706,800
                                                                                    ---------------
                                                                                         41,095,596
                                                                                    ---------------
             EQUIPMENT (1.1%)
     9,880   Primeco, Inc............................     8.56 to 8.63    12/31/00        9,878,558
                                                                                    ---------------
             FOOD PROCESSING (3.2%)
    10,973   American Italian Pasta Co...............     9.31 to 9.50    02/27/04       10,967,607
     8,839   Keebler Holding Corp....................     8.38 to 9.19    07/31/03        8,834,682
     9,876   Keebler Holding Corp....................     8.63 to 9.19    07/31/04        9,873,811
                                                                                    ---------------
                                                                                         29,676,100
                                                                                    ---------------
             FOOD SERVICES (3.7%)
     6,743   Rykoff-Sexton, Inc......................          8.63       10/31/02        6,743,041
     3,236   Rykoff-Sexton, Inc......................          8.88       04/30/03        3,236,357
     5,880   SC International Services, Inc. &
             Caterair International Corp.............     8.50 to 8.63    09/15/01        5,879,651
     7,333   SC International Services, Inc. &
             Caterair International Corp.............     8.50 to 8.63    09/15/02        7,332,675
     1,613   SC International Services, Inc. &
             Caterair International Corp.............     8.75 to 8.88    09/15/03        1,612,535
     6,652   Volume Services, Inc....................          8.75       12/31/02        6,651,602
     3,326   Volume Services, Inc....................          9.25       12/31/03        3,325,734
                                                                                    ---------------
                                                                                         34,781,595
                                                                                    ---------------
             FOODS & BEVERAGES (1.7%)
     3,125   Restaurants Unlimited, Inc..............          9.00       06/03/00        3,125,000
     7,912   Van de Kamp's, Inc......................    8.88 to 10.25    04/30/03        7,916,231
     4,951   Van de Kamp's, Inc......................    9.13 to 10.50    09/30/03        4,953,819
                                                                                    ---------------
                                                                                         15,995,050
                                                                                    ---------------
             FUNERAL SERVICES (1.1%)
     5,000   Prime Succession, Inc...................     8.49 to 8.68    08/01/03        4,998,455
     5,000   Prime Succession, Inc. (Participation:
             Goldman Sachs & Co.) (b)................     8.49 to 8.68    08/01/03        4,999,800
                                                                                    ---------------
                                                                                          9,998,255
                                                                                    ---------------
             GAS-TRUCK STOP (0.4%)
     3,682   Petro PSC Properties, L.P...............          8.80       05/24/01        3,680,668
                                                                                    ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       15
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1996, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                                INTEREST       MATURITY
 THOUSANDS                                                  RATE           DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                       <C>              <C>         <C>
             HEALTHCARE (2.1%)
 $   7,260   Community Health Systems, Inc...........        8.63%        12/31/03  $     7,260,564
     7,260   Community Health Systems, Inc...........        9.13         12/31/04        7,260,492
     5,479   Community Health Systems, Inc...........        9.38         12/31/05        5,479,562
                                                                                    ---------------
                                                                                         20,000,618
                                                                                    ---------------
             HOUSEHOLD FURNISHINGS & APPLIANCES (2.0%)
     9,875   Graco Children's Products, Inc..........       10.25         06/30/03        9,875,000
    10,000   Lifestyle Furnishings International,
             Ltd.....................................        8.50         08/05/04       10,000,100
                                                                                    ---------------
                                                                                         19,875,100
                                                                                    ---------------
             INDUSTRIALS (0.8%)
     7,714   UCAR International, Inc.................        7.63         12/31/02        7,714,826
                                                                                    ---------------
             MANUFACTURING (5.0%)
     3,103   C.S. Brooks Canada, Inc.................        8.69         06/30/02        3,103,603
     6,897   C.S. Brooks Canada, Inc.................        8.94         06/30/04        6,896,828
     9,925   Desa International, Inc.................  7.94 to 8.13       08/31/01        9,925,106
     9,980   Desa International, Inc.................     8.44 to 9.50    02/28/03        9,980,274
     5,282   InterMetro Industries Corp..............     8.50 to 8.56    06/30/03        5,282,417
     4,108   InterMetro Industries Corp..............     9.00 to 9.06    06/30/04        4,108,467
     8,000   Panavision, Inc.........................     8.69 to 8.94    03/31/04        8,001,104
                                                                                    ---------------
                                                                                         47,297,799
                                                                                    ---------------
             MANUFACTURING - DIVERSIFIED (0.6%)
     5,200   Health O'Meter, Inc.....................          8.25       08/15/01        5,199,376
                                                                                    ---------------
             MEDIA GROUP (1.5%)
    13,961   ADVO, Inc...............................          8.57       03/31/04       13,960,692
                                                                                    ---------------
             MEDICAL PRODUCTS & SUPPLIES (2.6%)
     4,909   Dade International, Inc.................          8.75       12/31/02        4,908,845
     4,909   Dade International, Inc.................          9.13       12/31/03        4,907,962
     5,182   Dade International, Inc.................          9.38       12/31/04        5,180,523
     2,727   Medical Specialties Group, Inc..........          7.42       06/30/01        2,727,273
     7,273   Medical Specialties Group, Inc..........          8.17       06/30/04        7,272,655
                                                                                    ---------------
                                                                                         24,997,258
                                                                                    ---------------
             METALS & MINING (1.0%)
     9,000   U.S. Silica Corp........................          8.88       12/31/03        9,000,270
                                                                                    ---------------
             MISCELLANEOUS (4.5%)
    29,760   Borg-Warner Security Corp...............          8.75       12/31/98       29,758,849
    12,865   Pinnacle Brands, Inc....................          8.79       05/29/02       12,861,357
                                                                                    ---------------
                                                                                         42,620,206
                                                                                    ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       16
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1996, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                                INTEREST       MATURITY
 THOUSANDS                                                  RATE           DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                       <C>              <C>         <C>
             OFFICE EQUIPMENT (0.7%)
 $   6,892   Knoll, Inc..............................  8.48 to 8.50%      08/31/03  $     6,891,616
                                                                                    ---------------
             OIL (0.8%)
     7,500   Calciner Industries, Inc................          8.82       09/30/04        7,498,200
                                                                                    ---------------
             PAPER PRODUCTS (0.4%)
     2,994   Mail-Well Corp..........................          8.44       07/31/03        2,994,324
     1,078   Supermex, Inc...........................          8.44       07/31/03        1,077,823
                                                                                    ---------------
                                                                                          4,072,147
                                                                                    ---------------
             PUBLISHING - BUSINESS (1.6%)
    15,000   Advanstar Communications, Inc...........          8.63       12/31/03       15,000,450
                                                                                    ---------------
             RAILROAD EQUIPMENT (1.0%)
     9,750   Johnstown America Industries, Inc.......     8.50 to 9.00    03/31/03        9,752,277
                                                                                    ---------------
             RECORD & TAPE (0.3%)
     4,876   Camelot Music, Inc......................          9.75       02/28/01        3,022,500
                                                                                    ---------------
             RETAIL - DEPARTMENT STORES (3.7%)
    14,689   Caldor Corp. (Revolver).................     6.19 to 8.25    12/31/98       14,686,755
    14,863   Kmart Corp..............................          8.00       06/06/99       14,862,945
     5,420   Kmart Corp. (Revolver)..................     7.94 to 9.75    06/06/99        5,420,044
                                                                                    ---------------
                                                                                         34,969,744
                                                                                    ---------------
             RETAIL - SPECIALTY (2.5%)
    13,400   AnnTaylor, Inc..........................          8.13       07/29/98       13,400,804
    10,000   Kirkland's, Inc.........................    9.31 to 11.00    06/30/02       10,000,598
                                                                                    ---------------
                                                                                         23,401,402
                                                                                    ---------------
             SPECIALTY PACKAGING (1.1%)
     5,940   Calmar, Inc.............................    8.63 to 10.25    09/15/03        5,939,705
     4,455   Calmar, Inc.............................    8.88 to 10.50    03/15/04        4,454,778
                                                                                    ---------------
                                                                                         10,394,483
                                                                                    ---------------
             SPORTING GOODS (2.1%)
     4,278   E & S Holdings Corp.....................         10.00       09/30/04        4,277,778
     4,278   E & S Holdings Corp.....................         10.50       09/30/05        4,277,778
     2,444   E & S Holdings Corp.....................         11.00       03/30/06        2,444,444
     1,503   Worldwide Sports & Recreation, Inc......     8.50 to 8.56    04/26/00        1,502,392
     7,318   Worldwide Sports & Recreation, Inc......          9.06       04/26/01        7,316,717
                                                                                    ---------------
                                                                                         19,819,109
                                                                                    ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       17
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1996, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                                INTEREST       MATURITY
 THOUSANDS                                                  RATE           DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                       <C>              <C>         <C>
             SUPERMARKETS (3.6%)
 $   7,716   Food 4 Less Supermarkets, Inc...........        8.50%        06/15/01  $     7,716,232
     2,594   Food 4 Less Supermarkets, Inc...........        9.75         02/15/04        2,594,634
     3,227   Food 4 Less Supermarkets, Inc.
             (Revolver)..............................  8.19 to 8.31       06/15/01        3,227,916
     4,677   Smith's Food & Drug Centers, Inc........          8.69       11/30/03        4,677,255
     4,677   Smith's Food & Drug Centers, Inc........          9.19       11/30/04        4,677,255
     4,677   Smith's Food & Drug Centers, Inc........          9.44       08/31/05        4,677,255
     3,778   Star Markets Company, Inc...............          8.50       12/31/01        3,777,216
     2,830   Star Markets Company, Inc...............          9.00       12/31/02        2,829,924
                                                                                    ---------------
                                                                                         34,177,687
                                                                                    ---------------
             TEXTILES (1.1%)
     5,000   Blackstone Capital Company II, L.L.C....          9.00       01/13/97        5,000,100
     5,000   Wasserstein/C&A Holdings, L.L.C.........          9.13       01/13/97        4,999,900
                                                                                    ---------------
                                                                                         10,000,000
                                                                                    ---------------
             TOYS (1.5%)
     7,241   Ritvik Toys, Inc........................          8.94       02/08/03        7,240,943
     7,241   Ritvik Toys, Inc........................          9.44       02/08/04        7,240,943
                                                                                    ---------------
                                                                                         14,481,886
                                                                                    ---------------
             WHOLESALE DISTRIBUTOR (1.6%)
    14,912   American Marketing Industries, Inc......     8.94 to 9.13    11/29/02       14,912,142
                                                                                    ---------------
             WIRE & CABLE (1.6%)
     9,939   International Wire Group, Inc...........          8.54       09/30/02        9,938,798
     4,981   International Wire Group, Inc...........     8.97 to 9.41    09/30/03        4,981,658
                                                                                    ---------------
                                                                                         14,920,456
                                                                                    ---------------
             TOTAL SENIOR COLLATERALIZED TERM LOANS
             (IDENTIFIED COST $873,583,456).......................................      874,153,297
                                                                                    ---------------
</TABLE>
 
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                                                    VALUE
- ------------------------------------------------------------------------------------------------------
<C>          <S>                                                                       <C>
             PREFERRED STOCK (0.1%)
             APPAREL
     1,722K  London Fog Industries, Inc. 17.50% due 2/28/05 (Series A-1) (Restricted)
             (c)
             (IDENTIFIED COST $2,175,563)............................................        1,222,422
                                                                                       ---------------
 
             COMMON STOCKS (0.0%)
             APPAREL (0.0%)
     1,291   London Fog Industries, Inc. (Restricted)................................               --
                                                                                       ---------------
             FOOD SERVICES (0.0%)
     4,209   Flagstar Companies (Restricted).........................................            8,681
                                                                                       ---------------
             TOTAL COMMON STOCKS
             (IDENTIFIED COST $60,507)...............................................            8,681
                                                                                       ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       18
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1996, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                                 COUPON        MATURITY
 THOUSANDS                                                  RATE           DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                       <C>              <C>         <C>
             SHORT-TERM INVESTMENTS (6.1%)
             COMMERCIAL PAPER (d) (4.4%)
             INSURANCE
 $  41,000   AIG Funding, Inc.**
             (Amortized Cost $40,988,042)............        5.25%        10/03/96  $    40,988,042
                                                                                    ---------------
 
             REPURCHASE AGREEMENT (1.7%)
    15,879   The Bank of New York (dated 09/30/96;
             proceeds $15,881,039; collateralized by
             $15,862,607 U.S. Treasury Note 5.625%
             due 10/31/97 valued at $16,196,411)
             (Identified Cost $15,878,834)...........        5.00         10/01/96       15,878,834
                                                                                    ---------------
 
             TOTAL SHORT-TERM INVESTMENTS
             (IDENTIFIED COST $56,866,876)........................................       56,866,876
                                                                                    ---------------
 
TOTAL INVESTMENTS
(IDENTIFIED COST $932,686,402) (E)...........       99.2    932,251,276
 
CASH AND OTHER ASSETS IN EXCESS OF
LIABILITIES..................................        0.8      7,219,269
                                                   -----   ------------
 
NET ASSETS...................................      100.0%  $939,470,545
                                                   -----   ------------
                                                   -----   ------------
 
<FN>
- ---------------------
 K   In thousands.
 *   Non-income producing security.
**   All or a portion of these securities are segregated in connection with
     unfunded loan commitments.
 +   3 percent paid in cash, 6.25 percent payment-in-kind; converts to prime
     plus 1 percent cash payment on May 31, 1997.
(a)  Floating rate securities. Interest rates shown are those in effect at
     September 30, 1996.
(b)  Participation: participation interests were acquired through the financial
     institutions indicated parenthetically.
(c)  Payment-in-kind security.
(d)  Security was purchased on a discount basis. The interest rate shown has
     been adjusted to reflect a money market equivalent yield.
(e)  The aggregate cost for federal income tax purposes approximates identified
     cost. The aggregate gross unrealized appreciation was $2,769,458 and the
     aggregate gross unrealized depreciation was $3,204,584, resulting in net
     unrealized depreciation of $435,126.
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       19
<PAGE>
PRIME INCOME TRUST
FINANCIAL STATEMENTS
 
STATEMENT OF ASSETS AND LIABILITIES
SEPTEMBER 30, 1996
 
<TABLE>
<S>                                                           <C>
ASSETS:
Investments, at value
  (identified cost $932,686,402)............................  $932,251,276
Cash........................................................     3,709,177
Receivable for:
    Interest................................................     6,710,184
    Shares of beneficial interest sold......................     3,913,682
Prepaid expenses and other assets...........................       446,455
                                                              ------------
 
     TOTAL ASSETS...........................................   947,030,774
                                                              ------------
 
LIABILITIES:
Payable for:
    Dividends to shareholders...............................       832,133
    Investment advisory fee.................................       689,001
    Administration fee......................................       196,420
Deferred loan fees..........................................     5,635,444
Accrued expenses and other payables.........................       207,231
Commitments and contingencies (Note 7)......................       --
                                                              ------------
     TOTAL LIABILITIES......................................     7,560,229
                                                              ------------
NET ASSETS:
Paid-in-capital.............................................   944,540,145
Net unrealized depreciation.................................      (435,126)
Accumulated undistributed net investment income.............       238,827
Accumulated net realized loss...............................    (4,873,301)
                                                              ------------
     NET ASSETS.............................................  $939,470,545
                                                              ------------
                                                              ------------
NET ASSET VALUE PER SHARE,
  94,535,310 SHARES OUTSTANDING (UNLIMITED SHARES AUTHORIZED
  OF $.01 PAR VALUE)........................................
                                                                     $9.94
                                                              ------------
                                                              ------------
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE YEAR ENDED SEPTEMBER 30, 1996
 
<TABLE>
<S>                                                           <C>
NET INVESTMENT INCOME:
 
INCOME
Interest....................................................  $62,118,753
Net facility, amendment and other fees......................    3,749,154
Other income................................................      223,914
                                                              -----------
 
     TOTAL INCOME...........................................   66,091,821
                                                              -----------
 
EXPENSES
Investment advisory fee.....................................    6,524,700
Administration fee..........................................    1,845,500
Professional fees...........................................      609,473
Transfer agent fees and expenses............................      447,960
Registration fees...........................................      423,120
Shareholder reports and notices.............................      291,308
Custodian fees..............................................       90,605
Trustees' fees and expenses.................................       22,462
Other.......................................................      499,224
                                                              -----------
 
     TOTAL EXPENSES.........................................   10,754,352
                                                              -----------
 
     NET INVESTMENT INCOME..................................   55,337,469
                                                              -----------
 
NET REALIZED AND UNREALIZED LOSS:
Net realized loss...........................................   (1,507,802)
Net change in unrealized appreciation/ depreciation.........   (2,222,920)
                                                              -----------
 
     NET LOSS...............................................   (3,730,722)
                                                              -----------
 
NET INCREASE................................................  $51,606,747
                                                              -----------
                                                              -----------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       20
<PAGE>
PRIME INCOME TRUST
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF CHANGES IN NET ASSETS
 
<TABLE>
<CAPTION>
                                                              FOR THE YEAR ENDED   FOR THE YEAR ENDED
                                                              SEPTEMBER 30, 1996   SEPTEMBER 30, 1995
- -----------------------------------------------------------------------------------------------------
<S>                                                           <C>                  <C>
 
INCREASE (DECREASE) IN NET ASSETS:
 
OPERATIONS:
Net investment income.......................................     $ 55,337,469         $ 31,803,245
Net realized loss...........................................       (1,507,802)          (2,551,571)
Net change in unrealized appreciation/depreciation..........       (2,222,920)           2,716,998
                                                              ------------------   ------------------
 
     NET INCREASE...........................................       51,606,747           31,968,672
                                                              ------------------   ------------------
 
DIVIDENDS AND DISTRIBUTIONS FROM:
Net investment income.......................................      (55,512,316)         (31,409,897)
Net realized gain...........................................        --                    (957,304)
                                                              ------------------   ------------------
 
     TOTAL..................................................      (55,512,316)         (32,367,201)
                                                              ------------------   ------------------
Net increase from transactions in shares of beneficial
  interest..................................................      422,015,153          216,725,076
                                                              ------------------   ------------------
 
     TOTAL INCREASE.........................................      418,109,584          216,326,547
 
NET ASSETS:
Beginning of period.........................................      521,360,961          305,034,414
                                                              ------------------   ------------------
 
     END OF PERIOD
    (INCLUDING UNDISTRIBUTED NET INVESTMENT INCOME OF
    $238,827 AND $413,674, RESPECTIVELY)....................     $939,470,545         $521,360,961
                                                              ------------------   ------------------
                                                              ------------------   ------------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       21
<PAGE>
PRIME INCOME TRUST
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED SEPTEMBER 30, 1996
 
<TABLE>
<S>                                                                                     <C>
INCREASE (DECREASE) IN CASH:
 
CASH FLOWS PROVIDED BY OPERATING ACTIVITIES:
Net investment income.................................................................  $    55,337,469
Adjustments to reconcile net investment income to net cash from operating activities:
Increase in receivables and other assets related to operations........................       (2,269,978)
Increase in payables related to operations............................................          342,841
Net loan fees received................................................................        5,812,854
Amortization of loan fees.............................................................       (3,749,154)
Accretion of discounts................................................................       (1,045,950)
                                                                                        ---------------
 
     NET CASH PROVIDED BY OPERATING ACTIVITIES........................................       54,428,082
                                                                                        ---------------
 
CASH FLOWS USED FOR INVESTING ACTIVITIES:
Purchases of investments..............................................................     (853,386,468)
Principal repayments/sales of investments.............................................      466,386,119
Net sales/maturities of short-term investments........................................      (35,840,134)
                                                                                        ---------------
 
     NET CASH USED FOR INVESTING ACTIVITIES...........................................     (422,840,483)
                                                                                        ---------------
 
CASH FLOWS PROVIDED BY FINANCING ACTIVITIES:
Shares of beneficial interest sold....................................................      452,558,801
Shares tendered.......................................................................      (56,517,971)
Dividends from net investment income (net of reinvested dividends of $26,959,275).....      (27,941,451)
                                                                                        ---------------
 
     NET CASH PROVIDED BY FINANCING ACTIVITIES........................................      368,099,379
                                                                                        ---------------
 
NET DECREASE IN CASH..................................................................         (313,022)
 
CASH AT BEGINNING OF YEAR.............................................................        4,022,199
                                                                                        ---------------
 
CASH BALANCE AT END OF YEAR...........................................................  $     3,709,177
                                                                                        ---------------
                                                                                        ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       22
<PAGE>
PRIME INCOME TRUST
NOTES TO FINANCIAL STATEMENTS SEPTEMBER 30, 1996
 
1. ORGANIZATION AND ACCOUNTING POLICIES
 
Prime Income Trust (the "Trust") is registered under the Investment Company Act
of 1940, as amended, as a non-diversified, closed-end management investment
company. The Trust's investment objective is to provide a high level of current
income consistent with the preservation of capital. The Trust was organized as a
Massachusetts business trust on August 17, 1989 and commenced operations on
November 30, 1989.
 
The Trust offers and sells its shares to the public on a continuous basis. The
Trustees intend, each quarter, to consider authorizing the Trust to make tender
offers for all or a portion of its outstanding shares of beneficial interest at
the then current net asset value of such shares.
 
The preparation of financial statements in accordance with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts and disclosures. Actual results could differ from
those estimates. The following is a summary of significant accounting policies:
 
A. VALUATION OF INVESTMENTS -- (1) The Trustees believe that, at present, there
are not sufficient market quotations provided by banks, dealers or pricing
services respecting interests in senior collateralized loans ("Senior Loans") to
corporations, partnerships and other entities ("Borrower") to enable the Trust
to properly value Senior Loans based on available market quotations.
Accordingly, until the market for Senior Loans develops, interests in Senior
Loans held by the Trust are valued at their fair value in accordance with
procedures established in good faith by the Trustees. Under the procedures
adopted by the Trustees, interests in Senior Loans are priced using a matrix
which takes into account the relationship between current interest rates and
interest rates payable on each Senior Loan, as well as the total number of days
in each interest period and the period remaining until the next interest rate
determination or maturity of the Senior Loan. Adjustments in the matrix-
determined price of a Senior Loan will be made in the event of a default on a
Senior Loan or a significant change in the creditworthiness of the Borrower. The
fair values determined in accordance with these procedures may differ
significantly from the market values that would have been used had a ready
market for the Senior Loans existed; (2) portfolio securities for which
over-the-counter market quotations are readily available are valued at the
latest bid price; (3) short-term debt securities having a maturity date of more
than sixty days at time of purchase are valued on a mark-to-market basis until
sixty days prior to maturity and thereafter at amortized cost based on their
value on the 61st day. Short-term debt securities having a maturity date of
sixty days or less at the
 
                                       23
<PAGE>
PRIME INCOME TRUST
NOTES TO FINANCIAL STATEMENTS SEPTEMBER 30, 1996, CONTINUED
 
time of purchase are valued at amortized cost; and (4) all other securities and
other assets are valued at their fair value as determined in good faith under
procedures established by and under the general supervision of the Trustees.
 
B. ACCOUNTING FOR INVESTMENTS -- Security transactions are accounted for on the
trade date (date the order to buy or sell is executed). Realized gains and
losses on security transactions are determined by the identified cost method.
Interest income is accrued daily except where collection is not expected. When
the Trust buys an interest in a Senior Loan, it may receive a facility fee,
which is a fee paid to lenders upon origination of a Senior Loan and/or a
commitment fee which is paid to lenders on an ongoing basis based upon the
undrawn portion committed by the lenders of the underlying Senior Loan. The
Trust amortizes the facility fee and accrues the commitment fee over the
expected term of the loan. When the Trust sells an interest in a Senior Loan, it
may be required to pay fees or commissions to the purchaser of the interest.
Fees received in connection with loan amendments are amortized over the expected
term of the loan.
 
C. SENIOR LOANS -- The Trust invests primarily in Senior Loans to Borrowers.
Senior Loans are typically structured by a syndicate of lenders ("Lenders"), one
or more of which administers the Senior Loan on behalf of the Lenders ("Agent").
Lenders may sell interests in Senior Loans to third parties ("Participations")
or may assign all or a portion of their interest in a Senior Loan to third
parties ("Assignments"). Senior Loans are exempt from registration under the
Securities Act of 1933. Presently, Senior Loans are not readily marketable and
are often subject to restrictions on resale.
 
D. FEDERAL INCOME TAX STATUS -- It is the Trust's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated investment
companies and to distribute all of its taxable income to its shareholders.
Accordingly, no federal income tax provision is required.
 
E. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS -- The Trust records dividends
and distributions to its shareholders on the record date. The amount of
dividends and distributions from net investment income and net realized capital
gains are determined in accordance with federal income tax regulations which may
differ from generally accepted accounting principles. These "book/tax"
differences are either considered temporary or permanent in nature. To the
extent these differences are permanent in nature, such amounts are reclassified
within the capital accounts based on their federal tax-basis treatment;
temporary differences do not require reclassification. Dividends and
distributions which exceed net investment income and net realized capital gains
for financial reporting purposes but not for tax purposes are reported as
dividends in excess of net investment
 
                                       24
<PAGE>
PRIME INCOME TRUST
NOTES TO FINANCIAL STATEMENTS SEPTEMBER 30, 1996, CONTINUED
 
income or distributions in excess of net realized capital gains. To the extent
they exceed net investment income and net realized capital gains for tax
purposes, they are reported as distributions of paid-in-capital.
 
2. INVESTMENT ADVISORY AGREEMENT
 
Pursuant to an Investment Advisory Agreement with Dean Witter InterCapital Inc.
(the "Investment Adviser"), the Trust pays the Investment Adviser an advisory
fee, accrued daily and payable monthly, by applying the following annual rates
to the net assets of the Trust determined as of the close of each business day:
0.90% to the portion of the daily net assets not exceeding $500 million and
0.85% to the portion of the daily net assets exceeding $500 million.
 
Under the terms of the Agreement, in addition to managing the Trust's
investments, the Investment Adviser pays the salaries of all personnel,
including officers of the Trust, who are employees of the Investment Adviser.
 
3. ADMINISTRATION AGREEMENT
 
Pursuant to an Administration Agreement with Dean Witter Services Company Inc.
(the "Administrator"), the Trust pays an administration fee, calculated daily
and payable monthly, by applying the annual rate of 0.25% to the Trust's daily
net assets.
 
Under the terms of the Administration Agreement, the Administrator maintains
certain of the Trust's books and records and furnishes, at its own expense,
office space, facilities, equipment, clerical, bookkeeping and certain legal
services and pays the salaries of all personnel, including officers of the Trust
who are employees of the Administrator. The Administrator also bears the cost of
telephone services, heat, light, power and other utilities provided to the
Trust.
 
4. SECURITY TRANSACTIONS AND TRANSACTIONS WITH AFFILIATES
 
The cost of purchases and proceeds from sales of portfolio securities, excluding
short-term investments, for the year ended September 30, 1996 aggregated
$852,805,805 and $465,950,751, respectively.
 
Shares of the Trust are distributed by Dean Witter Distributors Inc. (the
"Distributor"), an affiliate of the Investment Adviser and Administrator.
Pursuant to a Distribution Agreement between the Trust, the Investment Adviser
and the Distributor, the Investment Adviser compensates the Distributor at an
annual rate of 2.75% of the purchase price of shares purchased from the Trust.
The Investment Adviser will compensate the Distributor at an annual rate of
0.10% of the value of shares sold for
 
                                       25
<PAGE>
PRIME INCOME TRUST
NOTES TO FINANCIAL STATEMENTS SEPTEMBER 30, 1996, CONTINUED
 
any shares that remain outstanding after one year from the date of their initial
purchase. Any early withdrawal charge to defray distribution expenses will be
charged to the shareholder in connection with shares held for four years or less
which are accepted by the Trust for repurchase pursuant to tender offers. For
the year ended September 30, 1996, the Investment Adviser has informed the Trust
that it received approximately $728,000 in early withdrawal charges.
 
Dean Witter Trust Company, an affiliate of the Investment Adviser and
Administrator, is the Trust's transfer agent. At September 30, 1996, the Trust
had transfer agent fees and expenses payable of approximately $45,000.
 
The Trust has an unfunded noncontributory defined benefit pension plan covering
all independent Trustees of the Trust who will have served as independent
Trustees for at least five years at the time of retirement. Benefits under this
plan are based on years of service and compensation during the last five years
of service. Aggregate pension costs for the year ended September 30, 1996
included in Trustees' fees and expenses in the Statement of Operations amounted
to $3,907. At September 30, 1996, the Trust had an accrued pension liability of
$45,562 which is included in accrued expenses in the Statement of Assets and
Liabilities.
 
5. SHARES OF BENEFICIAL INTEREST
 
Transactions in shares of beneficial interest were as follows:
 
<TABLE>
<CAPTION>
                                                                        SHARES             AMOUNT
                                                                   ----------------   ----------------
<S>                                                                <C>                <C>
Balance, September 30, 1994......................................        30,489,594   $    305,799,916
Shares sold......................................................        24,363,027        243,262,814
Shares issued to shareholders for reinvestment of dividends and
 distributions...................................................         1,605,098         16,029,070
Shares tendered (four quarterly tender offers)...................        (4,259,745)       (42,566,808)
                                                                   ----------------   ----------------
Balance, September 30, 1995......................................        52,197,974        522,524,992
Shares sold......................................................        45,304,780        451,573,849
Shares issued to shareholders for reinvestment of dividends......         2,706,326         26,959,275
Shares tendered (four quarterly tender offers)...................        (5,673,770)       (56,517,971)
                                                                   ----------------   ----------------
Balance, September 30, 1996......................................        94,535,310   $    944,540,145
                                                                   ----------------   ----------------
                                                                   ----------------   ----------------
</TABLE>
 
On October 25, 1996, the Trustees approved a tender offer to purchase up to 4
million shares of beneficial interest to commence on November 20, 1996.
 
6. FEDERAL INCOME TAX STATUS
 
At September 30, 1996, the Trust had a net capital loss carryover of
approximately $4,140,000 of which $1,384,000 will be available through September
30, 2003 and $2,756,000 will be available through September 30, 2004 to offset
future capital gains to the extent provided by regulations.
 
                                       26
<PAGE>
PRIME INCOME TRUST
NOTES TO FINANCIAL STATEMENTS SEPTEMBER 30, 1996, CONTINUED
 
Capital losses incurred after October 31 ("post-October" losses) within the
taxable year are deemed to arise on the first business day of the Trust's next
taxable year. The Trust incurred and will elect to defer net capital losses of
approximately $557,000 during fiscal 1996.
 
As of September 30, 1996, the Trust had temporary book/tax differences primarily
attributable to post-October losses and market discount on revolver loans.
 
7. COMMITMENTS AND CONTINGENCIES
 
As of September 30, 1996, the Trust had unfunded loan commitments pursuant to
the following loan agreements:
 
<TABLE>
<CAPTION>
                                                                       UNFUNDED
BORROWER                                                              COMMITMENT
- -----------------------------------------------------------------  ----------------
<S>                                                                <C>
Caldor Corp......................................................  $      6,320,287
Kmart Corp.......................................................        19,580,000
Food 4 Less Supermarkets, Inc....................................        12,911,563
                                                                   ----------------
                                                                   $     38,811,850
                                                                   ----------------
                                                                   ----------------
</TABLE>
 
8. FINANCIAL INSTRUMENTS WITH CONCENTRATION OF CREDIT RISK
 
When the Trust purchases a Participation, the Trust typically enters into a
contractual relationship with the Lender or third party selling such
Participation ("Selling Participant"), but not with the Borrower. As a result,
the Trust assumes the credit risk of the Borrower, the Selling Participant and
any other persons interpositioned between the Trust and the Borrower
("Intermediate Participants") and the Trust may not directly benefit from the
collateral supporting the Senior Loan in which it has purchased the
Participation. Because the Trust will only acquire Participations if the Selling
Participant and each Intermediate Participant is a financial institution, the
Trust may be considered to have a concentration of credit risk in the banking
and brokerage industry. At September 30, 1996, such Participations had a fair
value of $19,454,248.
 
The Trust will only invest in Senior Loans where the Investment Adviser believes
that the Borrower can meet debt service requirements in a timely manner and
where the market value of the collateral at the time of investment equals or
exceeds the amount of the Senior Loan. In addition, the Trust will only acquire
Participations if the Selling Participant, and each Intermediate Participant, is
a financial institution which meets certain minimum creditworthiness standards.
 
                                       27
<PAGE>
PRIME INCOME TRUST
FINANCIAL HIGHLIGHTS
 
Selected  ratios  and  per  share  data  for  a  share  of  beneficial  interest
outstanding throughout each period:
 
<TABLE>
<CAPTION>
                                                                                                        FOR THE PERIOD
                                                                                                         NOVEMBER 30,
                                                    FOR THE YEAR ENDED SEPTEMBER 30                     1989* THROUGH
                                    ----------------------------------------------------------------    SEPTEMBER 30,
                                      1996       1995       1994       1993       1992       1991            1990
- -----------------------------------------------------------------------------------------------------------------------
 
<S>                                 <C>        <C>        <C>        <C>        <C>        <C>         <C>
PER SHARE OPERATING PERFORMANCE:
 
Net asset value,
 beginning of period............... $   9.99   $  10.00   $   9.91   $   9.99   $  10.00   $  10.00        $ 10.00
                                    ---------  ---------  ---------  ---------  ---------  ---------        ------
 
Net investment income..............     0.74       0.82       0.62       0.55       0.62       0.84           0.74
 
Net realized and unrealized gain
 (loss)............................    (0.04)      0.01       0.09      (0.08)     (0.01)     --             (0.01)
                                    ---------  ---------  ---------  ---------  ---------  ---------        ------
 
Total from investment operations...     0.70       0.83       0.71       0.47       0.61       0.84           0.73
                                    ---------  ---------  ---------  ---------  ---------  ---------        ------
 
Less dividends and distributions
 from:
   Net investment income...........    (0.75)     (0.81)     (0.62)     (0.55)     (0.62)     (0.84)         (0.73)
   Net realized gain...............    --         (0.03)     --         --         --         --           --
                                    ---------  ---------  ---------  ---------  ---------  ---------        ------
 
Total dividends and
 distributions.....................    (0.75)     (0.84)     (0.62)     (0.55)     (0.62)     (0.84)         (0.73)
                                    ---------  ---------  ---------  ---------  ---------  ---------        ------
 
Net asset value, end of period..... $   9.94   $   9.99   $  10.00   $   9.91   $   9.99   $  10.00        $ 10.00
                                    ---------  ---------  ---------  ---------  ---------  ---------        ------
                                    ---------  ---------  ---------  ---------  ---------  ---------        ------
 
TOTAL INVESTMENT RETURN+...........     7.25%      8.57%      7.32%      4.85%      6.23%      8.77%          7.57%(1)
 
RATIOS TO AVERAGE NET ASSETS:
Expenses...........................     1.46%      1.52%      1.60%      1.45%      1.47%      1.52%          1.48%(2)
 
Net investment income..............     7.50%      8.11%      6.14%      5.53%      6.14%      8.23%          8.95%(2)
 
SUPPLEMENTAL DATA:
Net assets, end of period, in
 thousands.........................  $939,471   $521,361   $305,034   $311,479   $413,497   $479,941           $328,189
 
Portfolio turnover rate............       72%       102%       147%        92%        46%        42%            35%(1)
<FN>
 
- ---------------------
*    Commencement of operations.
+    Does not reflect the deduction of sales charge. Calculated based on the net
     asset value as of the last business day of the period.
     Dividends and distributions are assumed to be reinvested at the prices
     obtained under the Trust's dividend reinvestment plan.
(1)  Not annualized.
(2)  Annualized.
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
 
                                       28
<PAGE>
PRIME INCOME TRUST
REPORT OF INDEPENDENT ACCOUNTANTS
 
TO THE SHAREHOLDERS AND TRUSTEES
OF PRIME INCOME TRUST
 
In our opinion, the accompanying statement of assets and liabilities, including
the portfolio of investments, and the related statements of operations, of
changes in net assets and of cash flows and the financial highlights present
fairly, in all material respects, the financial position of Prime Income Trust
(the "Trust") at September 30, 1996, the results of its operations and its cash
flows for the year then ended, the changes in its net assets for each of the two
years in the period then ended and the financial highlights for each of the six
years in the period then ended and for the period November 30, 1989
(commencement of operations) through September 30, 1990, in conformity with
generally accepted accounting principles. These financial statements and
financial highlights (hereafter referred to as "financial statements") are the
responsibility of the Trust's management; our responsibility is to express an
opinion on these financial statements based on our audits. We conducted our
audits of these financial statements in accordance with generally accepted
auditing standards which require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements, assessing the
accounting principles used and significant estimates made by management, and
evaluating the overall financial statement presentation. We believe that our
audits, which included confirmation of securities at September 30, 1996 by
correspondence with the custodian and, with respect to senior collateralized
loans, the selling participants and agent banks, provide a reasonable basis for
the opinion expressed above.
 
As explained in Note 1, the financial statements include senior collateralized
loans valued at $874,153,297 (93 percent of net assets), which values have been
estimated by the Trustees in the absence of readily ascertainable market values.
We have reviewed the procedures used by the Trustees in arriving at its
estimates of values of such senior collateralized loans and have inspected
underlying documentation, and, in the circumstances, we believe the procedures
are reasonable and the documentation appropriate. However, those estimated
values may differ significantly from the values that would have been used had a
ready market for the senior collateralized loans existed, and the differences
could be material.
 
PRICE WATERHOUSE LLP
1177 AVENUE OF THE AMERICAS
NEW YORK, NEW YORK 10036
NOVEMBER 11, 1996
 
                                       29
<PAGE>
19.  FINANCIAL STATEMENTS--SEPTEMBER 30, 1995
 
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1995
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                               INTEREST        MATURITY
 THOUSANDS                                                 RATE            DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                     <C>                <C>         <C>
             SENIOR COLLATERALIZED LOANS (a) (94.0%)
             ADVERTISING (1.4%)
 $   7,250   Eller Media Company
             Term Loan.............................          9.07%        12/21/03  $     7,249,637
                                                                                    ---------------
             AEROSPACE (0.9%)
     1,682   Gulfstream Aerospace Corp. Term
             Loan..................................          7.88         03/31/97        1,681,561
     2,900   Gulfstream Aerospace Corp. Term
             Loan..................................          8.80         03/31/98        2,899,333
                                                                                    ---------------
                                                                                          4,580,894
                                                                                    ---------------
             AIRLINES (2.8%)
     5,213   AeroMexico 1994-I U.S. Receivables
             Trust Term Loan (Mexico)+.............          9.94         07/31/99        5,212,297
     2,365   Northwest Airlines, Inc. Term Loan
             (Participation: First National Bank of
             Chicago) (b)..........................          9.13         09/15/97        2,364,819
     6,805   Northwest Airlines, Inc.
             Term Loan.............................          9.13         09/15/97        6,805,554
                                                                                    ---------------
                                                                                         14,382,670
                                                                                    ---------------
             APPAREL (2.5%)
       960   Anvil Knitwear, Inc. Term Loan........          8.38         02/03/01          959,824
     3,987   Anvil Knitwear, Inc. Term Loan........     9.13 to 10.75     02/02/02        3,985,739
     4,888   Hosiery Corporation of America, Inc.
             Term Loan.............................      9.13 to 9.19     07/31/01        4,885,367
        96   London Fog Industries, Inc. Term Loan
             (d)...................................                       05/31/02           91,550
     2,823   London Fog Industries, Inc. Term
             Loan..................................          9.75    ++   05/31/02        2,681,831
       580   London Fog Industries, Inc. Term Loan
             (c)...................................         12.50         05/31/02          551,691
                                                                                    ---------------
                                                                                         13,156,002
                                                                                    ---------------
             BEVERAGES (1.9%)
     4,000   Select Beverages, Inc.
             Term Loan.............................          9.13         06/30/01        3,999,480
     6,000   Select Beverages, Inc.
             Term Loan.............................          9.38         06/30/02        5,999,220
                                                                                    ---------------
                                                                                          9,998,700
                                                                                    ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       30
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1995, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                               INTEREST        MATURITY
 THOUSANDS                                                 RATE            DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                     <C>                <C>         <C>
             BREWERS (1.9%)
 $   5,000   G. Heileman Brewing Company, Inc. Term
             Loan..................................     8.50 to 8.63%     12/31/98  $     4,996,354
     5,000   G. Heileman Brewing Company, Inc. Term
             Loan (Participation: Bankers Trust)
             (b)...................................          9.69         12/31/00        5,000,300
                                                                                    ---------------
                                                                                          9,996,654
                                                                                    ---------------
             BROADCAST MEDIA (3.0%)
     6,930   Silver King Communications, Inc.
             Term Loan.............................          8.88         07/31/02        6,929,168
     3,897   U.S. Radio Holdings, Inc.
             Term Loan.............................      8.88 to 9.00     12/31/01        3,897,387
     5,003   U.S. Radio Holdings, Inc.
             Term Loan.............................     9.88 to 11.75     09/20/03        5,003,271
                                                                                    ---------------
                                                                                         15,829,826
                                                                                    ---------------
             BUILDING MATERIALS (2.9%)
    15,000   National Gypsum Company Term Loan.....          8.84         09/30/03       14,999,550
                                                                                    ---------------
             CABLE TELEVISION EQUIPMENT (1.0%)
     5,000   Marcus Cable Operating Co. L.P. Term
             Loan..................................          8.69         04/30/04        4,999,450
                                                                                    ---------------
             CABLE/CELLULAR (1.7%)
     8,750   Paging Network, Inc. Term Loan........          9.45         03/31/02        8,750,875
                                                                                    ---------------
             CONSUMER PRODUCTS (1.9%)
    10,000   Revlon Consumer Products Corp.
             Term Loan.............................          9.31         06/30/97        9,992,000
                                                                                    ---------------
             CONTAINERS (3.3%)
    17,000   Silgan Corporation Term Loan..........      8.88 to 8.94     03/15/02       16,996,979
                                                                                    ---------------
             CONTAINERS - PAPERS (1.2%)
     6,500   Stone Container Corp.
             Term Loan.............................          9.25         10/01/03        6,500,000
                                                                                    ---------------
             CONVENIENCE STORES (2.0%)
    10,333   Cumberland Farms, Inc.
             Term Loan (Participation:
             Merrill Lynch) (b)....................          9.25         12/31/98       10,332,710
                                                                                    ---------------
             COSMETICS (1.0%)
     5,000   Mary Kay Cosmetics, Inc.
             Term Loan.............................      9.38 to 9.88     12/06/02        4,999,432
                                                                                    ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       31
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1995, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                               INTEREST        MATURITY
 THOUSANDS                                                 RATE            DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                     <C>                <C>         <C>
             DRUG STORES (2.1%)
 $   7,500   Duane Reade, Inc. Term Loan...........          9.88%        12/31/99  $     7,497,975
     3,549   M & H Drugs, Inc. Term Loan...........         10.13         09/01/96        3,548,835
                                                                                    ---------------
                                                                                         11,046,810
                                                                                    ---------------
             ELECTRONICS (0.8%)
     4,026   Sperry Marine, Inc. Term Loan.........      9.13 to 9.69     11/12/00        4,023,371
                                                                                    ---------------
             ENTERTAINMENT (1.9%)
    10,000   Harrah's Jazz Co. & Finance Corp. Term
             Loan..................................      9.13 to 9.19     09/30/99        9,996,167
                                                                                    ---------------
             ENTERTAINMENT & LEISURE (2.3%)
    12,010   Six Flags Theme Parks, Inc. Term
             Loan..................................      8.88 to 9.00     06/23/03       12,002,899
                                                                                    ---------------
             EQUIPMENT (1.9%)
     9,960   Primeco, Inc. Term Loan...............      8.88 to 9.03     12/31/00        9,958,816
                                                                                    ---------------
             FOOD & BEVERAGES (1.4%)
     7,500   Restaurants Unlimited, Inc. Term
             Loan..................................          9.34         06/03/00        7,498,200
                                                                                    ---------------
             FOOD PROCESSING (1.0%)
     5,000   American Italian Pasta Co.
             Term Loan.............................          9.94         12/30/00        4,999,650
                                                                                    ---------------
             FOOD SERVICES (5.2%)
    10,702   SC International Services, Inc. &
             Caterair International Corp. Term
             Loan..................................         10.75         09/15/01       10,701,818
    13,353   SC International Services, Inc. &
             Caterair International Corp. Term
             Loan..................................         10.75         09/15/02       13,352,727
     2,945   SC International Services, Inc. &
             Caterair International Corp. Term
             Loan..................................         11.00         09/15/03        2,945,455
                                                                                    ---------------
                                                                                         27,000,000
                                                                                    ---------------
             GAS - TRUCK STOP (0.7%)
     3,848   Petro PSC Properties, L.P.
             Term Loan.............................          9.13         05/24/01        3,847,276
                                                                                    ---------------
             HOUSEHOLD FURNISHINGS & APPLIANCES (1.9%)
     9,975   Graco Children's Products, Inc. Term
             Loan..................................     8.81 to 10.75     06/30/03        9,970,309
                                                                                    ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       32
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1995, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                               INTEREST        MATURITY
 THOUSANDS                                                 RATE            DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                     <C>                <C>         <C>
             INDUSTRIALS (2.4%)
 $   6,079   UCAR International, Inc.
             Term Loan.............................          8.88%        01/31/03  $     6,079,180
     3,195   UCAR International, Inc.
             Term Loan.............................          9.38         07/31/03        3,195,467
     3,195   UCAR International, Inc.
             Term Loan.............................         10.06         01/31/04        3,195,658
                                                                                    ---------------
                                                                                         12,470,305
                                                                                    ---------------
             LEASING (8.5%)
    44,216   GPA Group PLC Revolver (Ireland)+
             (Participation: First National Bank of
             Chicago) (b)..........................      7.00 to 7.88     09/30/97       44,219,100
                                                                                    ---------------
             MANUFACTURING (2.2%)
     4,516   Desa International, Inc.
             Term Loan.............................          9.06         11/30/00        4,512,071
     2,701   Intermetro Industries Corp. Term
             Loan..................................          8.88         06/30/01        2,699,462
     4,053   Intermetro Industries Corp. Term
             Loan..................................          9.38         12/31/02        4,050,211
                                                                                    ---------------
                                                                                         11,261,744
                                                                                    ---------------
             MEDICAL PRODUCTS & SUPPLIES (1.0%)
     5,000   Deknatel Holdings, Inc.
             Term Loan.............................          9.81         04/20/01        5,000,150
                                                                                    ---------------
             MEDICAL SERVICES (0.8%)
     4,305   Unilab Corporation Term Loan..........          9.38         05/16/02        4,304,059
                                                                                    ---------------
             PAPER PRODUCTS (1.0%)
     3,750   Mail Well Corp. Term Loan.............          8.88         07/31/03        3,749,100
     1,250   Supermex, Inc. Term Loan..............          8.88         07/31/03        1,249,700
                                                                                    ---------------
                                                                                          4,998,800
                                                                                    ---------------
             PUBLISHING (2.8%)
     7,490   Ziff Davis Publishing Co.
             Term Loan.............................          8.88         12/31/01        7,487,653
     7,055   Ziff Davis Publishing Co.
             Term Loan.............................          9.38         12/31/02        7,052,707
                                                                                    ---------------
                                                                                         14,540,360
                                                                                    ---------------
             RAILROAD EQUIPMENT (1.9%)
    10,000   Johnstown America Industries, Inc.
             Term Loan.............................          9.00         03/31/03        9,999,000
                                                                                    ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       33
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1995, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                               INTEREST        MATURITY
 THOUSANDS                                                 RATE            DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                     <C>                <C>         <C>
             RECORD & TAPE (2.3%)
 $   4,875   Camelot Music, Inc. Term Loan.........     8.81 to 8.88%     02/28/01  $     4,874,829
     7,400   The Wherehouse Entertainment, Inc.
             Term Loan (d).........................         10.25         01/31/98        7,030,000
                                                                                    ---------------
                                                                                         11,904,829
                                                                                    ---------------
             RETAIL DEPARTMENT STORES (1.8%)
     2,114   Saks & Company Term Loan..............     8.75 to 10.25     06/30/98        2,114,701
     7,469   Saks & Company Term Loan..............      9.25 to 9.50     06/30/00        7,468,896
                                                                                    ---------------
                                                                                          9,583,597
                                                                                    ---------------
             RETAIL - SPECIALTY (2.9%)
    15,000   QVC, Inc. Term Loan...................          8.94         01/31/04       14,996,100
                                                                                    ---------------
             SCIENTIFIC INSTRUMENTS (0.6%)
     1,705   Waters Corporation Term Loan..........          9.63         11/30/02        1,704,558
     1,371   Waters Corporation Term Loan..........         10.00         05/31/03        1,370,610
                                                                                    ---------------
                                                                                          3,075,168
                                                                                    ---------------
             SPECIALTY PACKAGING (2.0%)
     6,000   Calmar, Inc. Term Loan................          8.88         09/15/03        5,999,940
     4,500   Calmar, Inc. Term Loan................          9.13         03/15/04        4,499,955
                                                                                    ---------------
                                                                                         10,499,895
                                                                                    ---------------
             SPORTING GOODS (3.3%)
     7,403   Spalding & Evenflo Companies, Inc.
             Term Loan.............................          9.06         10/17/02        7,402,524
     2,000   Worldwide Sports & Recreation, Inc.
             Term Loan.............................          8.94         04/26/00        2,000,000
     8,000   Worldwide Sports & Recreation, Inc.
             Term Loan.............................          9.44         04/26/01        8,000,000
                                                                                    ---------------
                                                                                         17,402,524
                                                                                    ---------------
             SUPERMARKETS (4.8%)
     4,655   Food 4 Less Supermarkets, Inc. Term
             Loan..................................          9.13         06/15/02        4,654,585
     4,655   Food 4 Less Supermarkets, Inc. Term
             Loan..................................          9.63         06/15/03        4,654,538
     4,655   Food 4 Less Supermarkets, Inc. Term
             Loan..................................          9.88         02/15/04        4,654,492
     4,576   Pathmark Stores Inc. Term Loan........          8.94         01/28/00        4,575,210
     3,789   Star Markets Company, Inc. Term
             Loan..................................          8.88         12/31/01        3,789,436
     2,842   Star Markets Company, Inc. Term
             Loan..................................          9.38         12/31/02        2,842,077
                                                                                    ---------------
                                                                                         25,170,338
                                                                                    ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       34
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1995, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                               INTEREST        MATURITY
 THOUSANDS                                                 RATE            DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                     <C>                <C>         <C>
             TELECOMMUNICATIONS EQUIPMENT (1.4%)
 $   3,500   K-Tec Holdings, Inc. Term Loan........          8.63%        01/31/03  $     3,499,965
     4,000   K-Tec Holdings, Inc. Term Loan........          9.13         01/31/04        3,999,960
                                                                                    ---------------
                                                                                          7,499,925
                                                                                    ---------------
             TEXTILES (1.9%)
     3,840   Blackstone Capital Company II, L.L.C.
             Purchase Term Loan....................          8.88         01/13/97        3,839,962
     1,160   Blackstone Capital Company II, L.L.C.
             Reserve Term Loan.....................          8.88         01/13/97        1,159,988
     3,840   Wasserstein/C&A Holdings, L.L.C.
             Purchase Term Loan....................          8.81         01/13/97        3,837,274
     1,160   Wasserstein/C&A Holdings, L.L.C.
             Reserve Term Loan.....................          8.81         01/13/97        1,159,176
                                                                                    ---------------
                                                                                          9,996,400
                                                                                    ---------------
             TEXTILES - APPAREL MANUFACTURERS (1.9%)
     9,950   Chicopee, Inc. Term Loan..............          9.13         03/31/03        9,950,000
                                                                                    ---------------
             WIRE & CABLE (1.9%)
     9,992   International Wire Group, Inc. Term
             Loan..................................          9.00         09/30/02        9,988,427
                                                                                    ---------------
 
             TOTAL SENIOR COLLATERALIZED LOANS
             (IDENTIFIED COST $487,492,471).......................................      489,969,598
                                                                                    ---------------
</TABLE>
 
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                                                    VALUE
- ------------------------------------------------------------------------------------------------------
<C>          <S>                                                                       <C>
             COMMON STOCKS (d) (0.0%)
             APPAREL (0.0%)
     1,291K  London Fog Industries, Inc. (Restricted)................................               --
                                                                                       ---------------
             FOOD SERVICES (0.0%)
     4,209   Flagstar Companies (Restricted).........................................           22,098
                                                                                       ---------------
 
             TOTAL COMMON STOCKS
             (IDENTIFIED COST $60,507)...............................................           22,098
                                                                                       ---------------
             PREFERRED STOCK (0.2%)
             APPAREL
     1,722K  London Fog Industries, Inc. 17.50% due 2/28/05 (Series A-1) (c)
             (Restricted) (IDENTIFIED COST $1,873,346)...............................        1,222,422
                                                                                       ---------------
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       35
<PAGE>
PRIME INCOME TRUST
PORTFOLIO OF INVESTMENTS SEPTEMBER 30, 1995, CONTINUED
 
<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN                                               INTEREST        MATURITY
 THOUSANDS                                                 RATE            DATE          VALUE
- ---------------------------------------------------------------------------------------------------
<C>          <S>                                                                       <C>
             SHORT-TERM INVESTMENTS (e) (4.0%)
             COMMERCIAL PAPER (0.1%)
             AUTOMOTIVE FINANCE
 $     595   Ford Motor Credit Co. (AMORTIZED COST
             $592,529).............................          5.75%        10/27/95  $       592,529
                                                                                    ---------------
 
             U.S. GOVERNMENT AGENCIES (3.9%)
     4,700   Federal Home Loan Banks*..............          5.65         10/12/95        4,691,886
    10,000   Federal Home Loan Mortgage Corp.*.....          6.30         10/02/95        9,998,250
     5,100   Federal Home Loan Mortgage Corp.*.....          5.66         10/06/95        5,095,992
       650   Federal National Mortgage Assoc.*.....          5.58         10/20/95          648,085
                                                                                    ---------------
 
             TOTAL U.S. GOVERNMENT AGENCIES
             (AMORTIZED COST $20,434,213).........................................       20,434,213
                                                                                    ---------------
 
             TOTAL SHORT-TERM INVESTMENTS
             (AMORTIZED COST $21,026,742).........................................       21,026,742
                                                                                    ---------------
 
             TOTAL INVESTMENTS
             (IDENTIFIED COST $510,453,066) (F).............................  98.2%     512,240,860
 
             CASH AND OTHER ASSETS IN EXCESS OF LIABILITIES.................   1.8        9,120,101
                                                                              ------   ------------
 
             NET ASSETS.....................................................  100.0%   $521,360,961
                                                                              ------   ------------
                                                                              ------   ------------
 
<FN>
- ---------------------
 K   In thousands.
 +   Senior Note.
++   3 percent paid in cash, 6.75 percent payment in kind; converts to prime
     plus 1 percent cash payment on May 31, 1997.
 *   All or a portion of these securities are segregated in connection with
     unfunded loan commitments.
(a)  Floating rate securities. Interest rates reset periodically. Interest
     rates shown are those in effect at September 30, 1995.
(b)  Participation; participation interests were acquired through the financial
     institutions indicated parenthetically.
(c)  Payment in kind security.
(d)  Non income producing security.
(e)  Securities were purchased on a discount basis. The interest rates shown
     have been adjusted to reflect a money market equivalent yield.
(f)  The  aggregate cost for  federal income tax  purposes is $510,453,066; the
     aggregate gross unrealized  appreciation is $3,134,546  and the  aggregate
     gross  unrealized depreciation is $1,346,752,  resulting in net unrealized
     appreciation of $1,787,794.
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
                                       36
<PAGE>
PRIME INCOME TRUST
FINANCIAL STATEMENTS
 
STATEMENT OF ASSETS AND LIABILITIES
SEPTEMBER 30, 1995
 
<TABLE>
<S>                                                           <C>
ASSETS:
Investments in securities, at value
  (identified cost $510,453,066)............................  $512,240,860
Cash........................................................     4,022,199
Receivable for:
    Shares of beneficial interest sold......................     4,898,633
    Interest................................................     4,496,892
    Principal prepayments...................................       435,368
Prepaid expenses and other assets...........................       389,771
                                                              ------------
 
     TOTAL ASSETS...........................................   526,483,723
                                                              ------------
 
LIABILITIES:
Payable for:
    Investments purchased...................................       580,663
    Investment advisory fee.................................       374,551
    Dividends to shareholders...............................       220,544
    Administration fee......................................       104,121
Accrued expenses and other payables.........................       271,139
Deferred facility fees......................................     3,571,744
Commitments and contingencies (Note 7)......................
                                                              ------------
     TOTAL LIABILITIES......................................     5,122,762
                                                              ------------
NET ASSETS:
Paid-in-capital.............................................   522,524,992
Net unrealized appreciation.................................     1,787,794
Accumulated undistributed net investment income.............       413,674
Accumulated net realized loss...............................    (3,365,499)
                                                              ------------
     NET ASSETS.............................................  $521,360,961
                                                              ------------
                                                              ------------
 
NET ASSET VALUE PER SHARE,
  52,197,974 SHARES OUTSTANDING (UNLIMITED SHARES AUTHORIZED
  OF $.01 PAR VALUE)........................................
                                                                     $9.99
                                                              ------------
                                                              ------------
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE YEAR ENDED SEPTEMBER 30, 1995
 
<TABLE>
<S>                                                           <C>
NET INVESTMENT INCOME:
 
INCOME
Interest....................................................  $34,988,644
Net facility and amendment fees.............................    2,232,672
Other income................................................      549,221
                                                              -----------
 
     TOTAL INCOME...........................................   37,770,537
                                                              -----------
EXPENSES
Investment advisory fee.....................................    3,526,906
Administration fee..........................................      979,775
Professional fees...........................................      546,641
Shareholder reports and notices.............................      281,710
Transfer agent fees and expenses............................      253,583
Registration fees...........................................      117,505
Custodian fees..............................................       94,161
Trustees' fees and expenses.................................       29,004
Organizational expenses.....................................        8,018
Other.......................................................      129,989
                                                              -----------
 
     TOTAL EXPENSES.........................................    5,967,292
                                                              -----------
 
     NET INVESTMENT INCOME..................................   31,803,245
                                                              -----------
 
NET REALIZED AND UNREALIZED GAIN (LOSS):
Net realized loss...........................................   (2,551,571)
Net change in unrealized depreciation.......................    2,716,998
                                                              -----------
 
     NET GAIN...............................................      165,427
                                                              -----------
 
NET INCREASE................................................  $31,968,672
                                                              -----------
                                                              -----------
</TABLE>
 
                           SEE NOTES TO FINANCIAL STATEMENTS
                                          37
<PAGE>
PRIME INCOME TRUST
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF CHANGES IN NET ASSETS
 
<TABLE>
<CAPTION>
                                                              FOR THE YEAR ENDED   FOR THE YEAR ENDED
                                                              SEPTEMBER 30, 1995   SEPTEMBER 30, 1994
- -----------------------------------------------------------------------------------------------------
<S>                                                           <C>                  <C>
 
INCREASE (DECREASE) IN NET ASSETS:
 
OPERATIONS:
Net investment income.......................................     $ 31,803,245         $ 17,647,052
Net realized gain (loss)....................................       (2,551,571)             596,754
Net change in unrealized depreciation.......................        2,716,998            2,033,215
                                                              ------------------   ------------------
 
     NET INCREASE...........................................       31,968,672           20,277,021
                                                              ------------------   ------------------
 
DIVIDENDS AND DISTRIBUTIONS FROM:
Net investment income.......................................      (31,409,897)         (17,652,279)
Net realized gain...........................................         (957,304)           --
                                                              ------------------   ------------------
 
     TOTAL..................................................      (32,367,201)         (17,652,279)
                                                              ------------------   ------------------
Net increase (decrease) from transactions in shares of
  beneficial interest.......................................      216,725,076           (9,069,554)
                                                              ------------------   ------------------
 
     TOTAL INCREASE (DECREASE)..............................      216,326,547           (6,444,812)
 
NET ASSETS:
Beginning of period.........................................      305,034,414          311,479,226
                                                              ------------------   ------------------
 
     END OF PERIOD
    (INCLUDING UNDISTRIBUTED NET INVESTMENT INCOME OF
    $413,674 AND $590, RESPECTIVELY)........................     $521,360,961         $305,034,414
                                                              ------------------   ------------------
                                                              ------------------   ------------------
</TABLE>
 
                           SEE NOTES TO FINANCIAL STATEMENTS
                                          38
<PAGE>
PRIME INCOME TRUST
FINANCIAL STATEMENTS, CONTINUED
 
STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED SEPTEMBER 30, 1995
 
<TABLE>
<S>                                                                                     <C>
INCREASE (DECREASE) IN CASH:
 
CASH FLOWS PROVIDED BY OPERATING ACTIVITIES:
Net investment income.................................................................  $    31,803,245
                                                                                        ---------------
Adjustments to reconcile net investment income
to net cash from operating activities:
Increase in receivables and other assets related to operations........................       (2,860,585)
Increase in payables related to operations............................................        1,439,130
Accretion of discounts................................................................         (477,143)
                                                                                        ---------------
 
     NET CASH PROVIDED BY OPERATING ACTIVITIES........................................       29,904,647
                                                                                        ---------------
 
CASH FLOWS USED FOR INVESTING ACTIVITIES:
Purchases of investments..............................................................     (563,680,131)
Principal repayments/sales of investments.............................................      350,474,058
Net sales/maturities of short-term investments........................................        3,891,453
                                                                                        ---------------
 
     NET CASH USED FOR INVESTING ACTIVITIES...........................................     (209,314,620)
                                                                                        ---------------
 
CASH FLOWS PROVIDED BY FINANCING ACTIVITIES:
Shares of beneficial interest sold....................................................      241,897,744
Shares tendered.......................................................................      (42,566,808)
Dividends and distributions from:
Net investment income (net of reinvested dividends of $16,029,070)....................      (15,250,078)
Net realized gain.....................................................................         (957,304)
                                                                                        ---------------
 
     NET CASH PROVIDED BY FINANCING ACTIVITIES........................................      183,123,554
                                                                                        ---------------
 
NET INCREASE IN CASH..................................................................        3,713,581
 
CASH AT BEGINNING OF YEAR.............................................................          308,618
                                                                                        ---------------
 
CASH AT END OF YEAR...................................................................  $     4,022,199
                                                                                        ---------------
                                                                                        ---------------
</TABLE>
 
                           SEE NOTES TO FINANCIAL STATEMENTS
                                          39
<PAGE>
PRIME INCOME TRUST
NOTES TO FINANCIAL STATEMENTS SEPTEMBER 30, 1995
 
1. ORGANIZATION AND ACCOUNTING POLICIES
 
Prime Income Trust (the "Trust") is registered under the Investment Company Act
of 1940, as amended, as a non-diversified, closed-end management investment
company. The Trust was organized as a Massachusetts business trust on August 17,
1989 and commenced operations on November 30, 1989.
 
The Trust offers and sells its shares to the public on a continuous basis. The
Trustees intend, each quarter, to consider authorizing the Trust to make tender
offers for all or a portion of its outstanding shares of beneficial interest at
the then current net asset value of such shares.
 
The following is a summary of significant accounting policies:
 
A. VALUATION OF INVESTMENTS -- (1) The Trustees believe that, at present, there
are not sufficient market quotations provided by banks, dealers, or pricing
services respecting interests in senior collateralized loans ("Senior Loans") to
corporations, partnerships and other entities ("Borrower") to enable the Trust
to properly value Senior Loans based on available market quotations.
Accordingly, until the market for Senior Loans develops, interests in Senior
Loans held by the Trust are valued at their fair value in accordance with
procedures established in good faith by the Trustees. Under the procedures
adopted by the Trustees, interests in Senior Loans are priced in accordance with
a matrix which takes into account the relationship between current interest
rates and interest rates payable on each Senior Loan, as well as the total
number of days in each interest period and the period remaining until the next
interest rate determination or maturity of the Senior Loan. Adjustments in the
matrix-determined price of a Senior Loan will be made in the event of a default
on a Senior Loan or a significant change in the creditworthiness of the
Borrower; (2) all portfolio securities for which over-the-counter market
quotations are readily available are valued at the latest bid price; (3) short-
term debt securities having a maturity date of more than sixty days at time of
purchase are valued on a mark-to-market basis until sixty days prior to maturity
and thereafter at amortized cost based on their value on the 61st day.
Short-term debt securities having a maturity date of sixty days or less at the
time of purchase are valued at amortized cost; and (4) all other securities and
other assets are valued at their fair value as determined in good faith under
procedures established by and under the general supervision of the Trustees.
 
B. ACCOUNTING FOR INVESTMENTS -- Security transactions are accounted for on the
trade date (date the order to buy or sell is executed). Realized gains and
losses on security transactions are determined by the identified cost method.
Discounts are accreted over the life of the respective securities. Interest
income is accrued daily except where collection is not expected. When the Trust
buys an
 
                                       40
<PAGE>
PRIME INCOME TRUST
NOTES TO FINANCIAL STATEMENTS SEPTEMBER 30, 1995, CONTINUED
 
interest in a Senior Loan, it may receive a facility fee, which is a fee paid to
lenders upon origination of a Senior Loan and/or a commitment fee which is paid
to lenders on an ongoing basis based upon the undrawn portion committed by the
lenders of the underlying Senior Loan. The Trust amortizes the facility fee over
the expected term of the loan. When the Trust sells an interest in a Senior
Loan, it may be required to pay fees or commissions to the purchaser of the
interest. Fees received in connection with loan amendments are amortized over
the expected term of the loan.
 
C. SENIOR LOANS -- The Trust invests primarily in Senior Loans to Borrowers.
Senior Loans are typically structured by a syndicate of lenders ("Lenders"), one
or more of which administers the Senior Loan on behalf of the Lenders ("Agent").
Lenders may sell interests in Senior Loans to third parties ("Participations")
or may assign all or a portion of their interest in a Senior Loan to third
parties ("Assignments"). Senior Loans are exempt from registration under the
Securities Act of 1933. Presently, they are not readily marketable and are often
subject to restrictions on resale.
 
D. FEDERAL INCOME TAX STATUS -- It is the Trust's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated investment
companies and to distribute all of its taxable income to its shareholders.
Accordingly, no federal income tax provision is required.
 
E. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS -- The Trust records dividends
and distributions to its shareholders on the record date. The amount of
dividends and distributions from net investment income and net realized capital
gains are determined in accordance with federal income tax regulations which may
differ from generally accepted accounting principles. These "book/tax"
differences are either considered temporary or permanent in nature. To the
extent these differences are permanent in nature, such amounts are reclassified
within the capital accounts based on their federal tax-basis treatment;
temporary differences do not require reclassification. Dividends and
distributions which exceed net investment income and net realized capital gains
for financial reporting purposes but not for tax purposes are reported as
dividends in excess of net investment income or distributions in excess of net
realized capital gains. To the extent they exceed net investment income and net
realized capital gains for tax purposes, they are reported as distributions of
paid-in-capital.
 
F. ORGANIZATIONAL EXPENSES -- Dean Witter InterCapital Inc. (the "Investment
Adviser") paid the organizational expenses of the Trust in the amount of
$248,312 which have been fully reimbursed by the Trust and were fully amortized
as of November 29, 1994.
 
                                       41
<PAGE>
PRIME INCOME TRUST
NOTES TO FINANCIAL STATEMENTS SEPTEMBER 30, 1995, CONTINUED
 
2. INVESTMENT ADVISORY AGREEMENT
 
Pursuant to an Investment Advisory Agreement, the Fund pays an advisory fee,
accrued daily and payable monthly, by applying the following annual rates to the
net assets of the Trust determined as of the close of each business day: 0.90%
to the portion of the daily net assets not exceeding $500 million and 0.85% to
the portion of the daily net assets exceeding $500 million.
 
Under the terms of the Agreement, in addition to managing the Trust's
investments, the Investment Adviser pays the salaries of all personnel,
including officers of the Trust, who are employees of the Investment Adviser.
 
3. ADMINISTRATION AGREEMENT
 
Pursuant to an Administration Agreement with Dean Witter Services Company Inc.
(the "Administrator"), the Trust pays an administration fee, calculated daily
and payable monthly, by applying the annual rate of 0.25% to the Trust's average
daily net assets.
 
Under the terms of the Administration Agreement, the Administrator maintains
certain of the Trust's books and records and furnishes, at its own expense,
office space, facilities, equipment, clerical, bookkeeping and certain legal
services and pays the salaries of all personnel, including officers of the Trust
who are employees of the Administrator. The Administrator also bears the cost of
telephone services, heat, light, power and other utilities provided to the
Trust.
 
4. SECURITY TRANSACTIONS AND TRANSACTIONS WITH AFFILIATES
 
The cost of purchases and proceeds from sales of portfolio securities, excluding
short-term investments, for the year ended September 30, 1995 aggregated
$564,260,794 and $350,909,426, respectively.
 
Shares of the Trust are distributed by Dean Witter Distributors Inc. (the
"Distributor"), an affiliate of the Investment Adviser and Administrator.
Pursuant to a Distribution Agreement between the Trust, the Investment Adviser
and the Distributor, the Investment Adviser compensates the Distributor at an
annual rate of 2.75% of the purchase price of shares purchased from the Trust.
The Investment Adviser will compensate the Distributor at an annual rate of
0.10% of the value of shares sold for any shares that remain outstanding after
one year from the date of their initial purchase. Any early withdrawal charge to
defray distribution expenses will be charged in connection with shares held for
four years or less which are accepted by the Trust for repurchase pursuant to
tender offers. For the
 
                                       42
<PAGE>
PRIME INCOME TRUST
NOTES TO FINANCIAL STATEMENTS SEPTEMBER 30, 1995, CONTINUED
 
year ended September 30, 1995, the Investment Adviser has informed the Trust
that it received approximately $219,000 in early withdrawal charges. The Trust's
shareholders pay such withdrawal charges which are not an expense of the Trust.
 
Dean Witter Trust Company, an affiliate of the Investment Adviser and
Administrator, is the Trust's transfer agent. At September 30, 1995, the Trust
had transfer agent fees and expenses payable of approximately $28,000.
 
The Trust has an unfunded noncontributory defined benefit pension plan covering
all independent Trustees of the Trust who will have served as independent
Trustees for at least five years at the time of retirement. Benefits under this
plan are based on years of service and compensation during the last five years
of service. Aggregate pension costs for the year ended September 30, 1995
included in Trustees' fees and expenses in the Statement of Operations amounted
to $7,596. At September 30, 1995, the Trust had an accrued pension liability of
$51,200 which is included in accrued expenses in the Statement of Assets and
Liabilities.
 
5. SHARES OF BENEFICIAL INTEREST
 
Transactions in shares of beneficial interest were as follows:
 
<TABLE>
<CAPTION>
                                                                     SHARES          AMOUNT
                                                                   -----------   --------------
<S>                                                                <C>           <C>
Balance, September 30, 1993......................................   31,428,097   $  314,869,470
Shares sold......................................................    6,355,963       63,559,546
Shares issued to shareholders for reinvestment of dividends......      948,118        9,461,997
Shares tendered (four quarterly tender offers)...................   (8,242,584)     (82,091,097)
                                                                   -----------   --------------
Balance, September 30, 1994......................................   30,489,594      305,799,916
Shares sold......................................................   24,363,027      243,262,814
Shares issued to shareholders for reinvestment of dividends and
 distributions...................................................    1,605,098       16,029,070
Shares tendered (four quarterly tender offers)...................   (4,259,745)     (42,566,808)
                                                                   -----------   --------------
Balance, September 30, 1995......................................   52,197,974   $  522,524,992
                                                                   -----------   --------------
                                                                   -----------   --------------
</TABLE>
 
On October 26, 1995, the Trustees approved a tender offer to purchase up to 4
million shares of beneficial interest to commence on November 15, 1995.
 
6. FEDERAL INCOME TAX STATUS
 
At September 30, 1995, the Trust had a net capital loss carryover of
approximately $1,384,000 which will be available through September 30, 2003 to
offset future capital gains to the extent provided by regulations.
 
                                       43
<PAGE>
PRIME INCOME TRUST
NOTES TO FINANCIAL STATEMENTS SEPTEMBER 30, 1995, CONTINUED
 
Any net capital loss incurred after October 31 ("post-October losses") within
the taxable year is deemed to arise on the first business day of the Trust's
next taxable year. The Trust incurred and will elect to defer a net capital loss
of approximately $2,390,000 during fiscal 1995.
 
As of September 30, 1995, the Trust had temporary book/tax differences primarily
attributable to post-October losses.
 
7. COMMITMENTS AND CONTINGENCIES
 
As of September 30, 1995, the Trust had unfunded loan commitments pursuant to
the following loan agreements:
 
<TABLE>
<CAPTION>
                                                                    UNFUNDED
       BORROWER                                                    COMMITMENT
- -----------------------------------------------------------------  -----------
<S>                                                                <C>
GPA Group PLC. ..................................................  $ 6,018,926
Marcus Cable Co. ................................................    5,000,000
                                                                   -----------
                                                                   $11,018,926
                                                                   -----------
                                                                   -----------
</TABLE>
 
8. FINANCIAL INSTRUMENTS WITH CONCENTRATION OF CREDIT RISK
 
When the Trust purchases a Participation, the Trust typically enters into a
contractual relationship with the Lender or third party selling such
Participation ("Selling Participant"), but not with the Borrower. As a result,
the Trust assumes the credit risk of the Borrower, the Selling Participant and
any other persons interpositioned between the Trust and the Borrower
("Intermediate Participants") and the Trust may not directly benefit from the
collateral supporting the Senior Loan in which it has purchased the
Participation. Because the Trust will only acquire Participations if the Selling
Participant and each Intermediate Participant is a financial institution, the
Trust may be considered to have a concentration of credit risk in the banking
industry. At September 30, 1995, such Participations had a fair value of
$61,916,929.
 
The Trust will only invest in Senior Loans where the Investment Adviser believes
that the Borrower can meet debt service requirements in a timely manner and
where the market value of the collateral at the time of investment equals or
exceeds the amount of the Senior Loan. In addition, the Trust will only acquire
Participations if the Selling Participant, and each Intermediate Participant, is
a financial institution which meets certain minimum creditworthiness standards.
 
                                       44
<PAGE>
PRIME INCOME TRUST
FINANCIAL HIGHLIGHTS
 
Selected ratios and per share data for a share of beneficial interest
outstanding throughout each period:
 
<TABLE>
<CAPTION>
                                                                                               FOR THE PERIOD
                                                                                                NOVEMBER 30,
                                                                                                   1989*
                                                FOR THE YEAR ENDED SEPTEMBER 30                   THROUGH
                                   ---------------------------------------------------------   SEPTEMBER 30,
                                     1995        1994        1993        1992        1991           1990
- -------------------------------------------------------------------------------------------------------------
 
<S>                                <C>         <C>         <C>         <C>         <C>         <C>
PER SHARE OPERATING PERFORMANCE:
 
Net asset value, beginning of
 period..........................  $   10.00   $    9.91   $    9.99   $   10.00   $   10.00      $  10.00
                                   ---------   ---------   ---------   ---------   ---------        ------
 
Net investment income............       0.82        0.62        0.55        0.62        0.84          0.74
Net realized and unrealized gain
 (loss)..........................       0.01        0.09       (0.08)      (0.01)     --             (0.01)
                                   ---------   ---------   ---------   ---------   ---------        ------
 
Total from investment
 operations......................       0.83        0.71        0.47        0.61        0.84          0.73
                                   ---------   ---------   ---------   ---------   ---------        ------
 
Less dividends and distributions
 from:
   Net investment income.........      (0.81)      (0.62)      (0.55)      (0.62)      (0.84)        (0.73)
   Net realized gain.............      (0.03)     --          --          --          --           --
                                   ---------   ---------   ---------   ---------   ---------        ------
 
Total dividends and
 distributions...................      (0.84)      (0.62)      (0.55)      (0.62)      (0.84)        (0.73)
                                   ---------   ---------   ---------   ---------   ---------        ------
 
Net asset value, end of period...  $    9.99   $   10.00   $    9.91   $    9.99   $   10.00      $  10.00
                                   ---------   ---------   ---------   ---------   ---------        ------
                                   ---------   ---------   ---------   ---------   ---------        ------
 
TOTAL INVESTMENT RETURN+.........       8.57%       7.32%       4.85%       6.23%       8.77%         7.57%(1)
 
RATIOS TO AVERAGE NET ASSETS:
Expenses.........................       1.52%       1.60%       1.45%       1.47%       1.52%         1.48%(2)
 
Net investment income............       8.11%       6.14%       5.53%       6.14%       8.23%         8.95%(2)
 
SUPPLEMENTAL DATA:
Net assets, end of period, in
 thousands.......................   $521,361    $305,034    $311,479    $413,497    $479,941      $328,189
 
Portfolio turnover rate..........        102%        147%         92%         46%         42%           35%(1)
<FN>
 
- ---------------------
 *   Commencement of operations.
 +   Does not reflect the deduction of sales charge.
(1)  Not annualized.
(2)  Annualized.
</TABLE>
 
                       SEE NOTES TO FINANCIAL STATEMENTS
 
                                       45
<PAGE>
PRIME INCOME TRUST
REPORT OF INDEPENDENT ACCOUNTANTS
 
TO THE SHAREHOLDERS AND TRUSTEES
OF PRIME INCOME TRUST
 
In our opinion, the accompanying statement of assets and liabilities, including
the portfolio of investments, and the related statements of operations, of
changes in net assets and of cash flows and the financial highlights present
fairly, in all material respects, the financial position of Prime Income Trust
(the "Trust") at September 30, 1995, the results of its operations and its cash
flows for the year then ended, the changes in its net assets for each of the two
years in the period then ended and the financial highlights for each of the five
years in the period then ended and for the period November 30, 1989
(commencement of operations) through September 30, 1990, in conformity with
generally accepted accounting principles. These financial statements and
financial highlights (hereafter referred to as "financial statements") are the
responsibility of the Trust's management; our responsibility is to express an
opinion on these financial statements based on our audits. We conducted our
audits of these financial statements in accordance with generally accepted
auditing standards which require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements, assessing the
accounting principles used and significant estimates made by management, and
evaluating the overall financial statement presentation. We believe that our
audits, which included confirmation of securities owned at September 30, 1995 by
correspondence with the custodian, and with respect to senior collateralized
loans by correspondence with the selling participants and agent banks, provide a
reasonable basis for the opinion expressed above.
 
As explained in Note 1, the financial statements include senior collateralized
loans valued at $489,969,598 (94 percent of net assets), whose values have been
determined in accordance with procedures established by the Trustees in the
absence of readily ascertainable market values. We have reviewed the procedures
which were established by the Trustees in determining the fair values of such
senior collateralized loans and have inspected underlying documentation, and, in
the circumstances, we believe the procedures are reasonable and the
documentation appropriate. However, because of the inherent uncertainty of
valuation, those values determined in accordance with procedures established by
the Trustees may differ significantly from the values that would have been used
had a ready market for the senior collateralized loans existed, and the
differences could be material.
 
PRICE WATERHOUSE LLP
1177 AVENUE OF THE AMERICAS
NEW YORK, NEW YORK 10036
NOVEMBER 8, 1995
 
                                       46

<PAGE>
                                                             EXHIBIT (a)(1)(iii)
 
                    FORM OF LETTER TO SHAREHOLDERS WHO HAVE
                          REQUESTED OFFER TO PURCHASE
<PAGE>
                               PRIME INCOME TRUST
 
Dear Shareholder:
 
    As you requested, we are enclosing a copy of the Prime Income Trust (the
"Trust") Offer to Purchase 4,000,000 of its issued and outstanding common shares
of beneficial interest (the "Common Shares") and the related Letter of
Transmittal (which together constitute the "Offer"). The Offer is for cash at
the net asset value ("NAV") per Common Share computed as of 4:00 P.M. New York
City time on the expiration date of the Offer. The expiration date is 12:00,
midnight, New York City time on March 14, 1997, unless extended as stated in the
Offer. An "Early Withdrawal Charge" will be imposed on most Common Shares
accepted for payment that have been held for four years or less. Please read
carefully the enclosed documents, which include the Trust's most recent
financial statements.
 
    If after reviewing the information set forth in the Offer, you wish to
tender Common Shares for purchase by the Trust, and you have a brokerage account
at Dean Witter Reynolds Inc. and your Common Shares are not evidenced by
certificates in your possession you may, if you wish, contact your account
executive and request that he or she tender your Common Shares on your behalf.
In such event you are not required to complete the enclosed Letter of
Transmittal.
 
    If you do not have a brokerage account at Dean Witter Reynolds Inc. and wish
to tender Common Shares or do not wish to tender Common Shares through your
account executive at Dean Witter Reynolds Inc. or your Common Shares are
evidenced by certificates in your possession, please follow the instructions
contained in the Offer to Purchase and Letter of Transmittal.
 
    Neither the Trust nor the Board of Trustees is making any recommendations to
any holder of Common Shares as to whether to tender Common Shares. Each
shareholder is urged to consult his or her account executive or tax adviser
before deciding whether to tender any Common Shares.
 
    The Trust's NAV per Share on February 7, 1997 was $9.95. You can obtain
current NAV quotations from Dean Witter Reynolds Inc. by calling (800) 869-3863
extension 61. The Trust offers and sells its Common Shares to the public on a
continuous basis. The Trust is not aware of any secondary market trading for the
Common Shares.
 
    Should you have any questions on the enclosed material, please do not
hesitate to call Dean Witter Reynolds Inc. at (800) 869-3863 extension 61 during
ordinary business hours. We appreciate your continued interest in Prime Income
Trust.
 
                                          Sincerely,
 
                                          PRIME INCOME TRUST
 
                               Two World Trade Center
                               New York, NY 10048
                               Telephone (212) 392-1600

<PAGE>
                                                                  EXHIBIT (a)(2)
 
                         FORM OF LETTER OF TRANSMITTAL
<PAGE>
                             LETTER OF TRANSMITTAL
                            REGARDING COMMON SHARES
                                       OF
                               PRIME INCOME TRUST
 
                   TENDERED PURSUANT TO THE OFFER TO PURCHASE
                            DATED FEBRUARY 12, 1997
 
     THE OFFER AND WITHDRAWAL RIGHTS EXPIRE AT 12:00 MIDNIGHT NEW YORK CITY
          TIME ON FRIDAY, MARCH 14, 1997, UNLESS THE OFFER IS EXTENDED
 
                               TO THE DEPOSITARY:
 
                           DEAN WITTER TRUST COMPANY
 
<TABLE>
<S>                            <C>
          BY MAIL:               BY HAND DELIVERY OR COURIER:
 
  Dean Witter Trust Company        Dean Witter Trust Company
        P.O. Box 984              Harborside Financial Center
Jersey City, New Jersey 07303              Plaza Two
                                 Jersey City, New Jersey 07311
                                   Attn: Prime Income Trust
</TABLE>
 
                         FOR DELIVERY INFORMATION CALL:
                           (800) 869-NEWS extension 0
 
<TABLE>
<S>                                         <C>                          <C>                       <C>
                           DESCRIPTION OF COMMON SHARES TENDERED (SEE INSTRUCTIONS 3 AND 4)
  NAME(S) AND ADDRESS(ES) OF REGISTERED
  OWNER(S) (PLEASE FILL IN EXACTLY THE
  NAME(S) IN WHICH COMMON SHARES ARE                                  COMMON SHARES TENDERED
  REGISTERED)                                               (ATTACH ADDITIONAL SCHEDULE IF NECESSARY)
                                                                                                      NO. OF COMMON
                                                CERTIFICATE NO.(S)*       NO. OF COMMON SHARES*     SHARES TENDERED**
                                            Total Common Shares
                Account No.                 Tendered
  * If Common Shares are not evidenced by certificates please write "None".
 ** To be completed by all tendering shareholders, whether or not your Common Shares are evidenced by certificates. If
    you desire to tender fewer than all Common Shares held in your account or evidenced by a certificate listed above,
    please indicate in this column the number you wish to tender. Otherwise all Common Shares evidenced by such
    certificate or held in your account will be deemed to have been tendered.
</TABLE>
 
                                   IMPORTANT
 
     YOU SHOULD NOT COMPLETE THE LETTER OF TRANSMITTAL IF YOU ARE TENDERING
    COMMON SHARES THROUGH YOUR DEAN WITTER REYNOLDS INC. ACCOUNT EXECUTIVE.
 
    DELIVERY TO AN ADDRESS OTHER THAN THAT SHOWN ABOVE DOES NOT CONSTITUTE VALID
DELIVERY.
 
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY
 
Gentlemen:
 
    The undersigned hereby tenders to the Prime Income Trust, a non-diversified,
closed-end management investment company organized as a Massachusetts business
trust (the "Trust") under the name "Allstate Prime Income Trust", the
above-described common shares of beneficial interest, par value $.01 per share,
of the Trust (the "Common Shares"), at a price (the "Purchase Price") equal to
the net asset value per Common Share ("NAV") computed as of 4:00 P.M. New York
City time on the Expiration Date (as defined in the Offer to Purchase) in cash,
upon the terms and conditions set forth in the Offer to Purchase, dated February
12, 1997, receipt of which is hereby acknowledged, and in this Letter of
Transmittal (which together constitute the "Offer"). An Early Withdrawal Charge
(as defined in the Offer to Purchase) will be imposed on most Common Shares
accepted for payment which have been held for four years or less.
 
    Subject to and effective upon acceptance for payment of the Common Shares
tendered hereby in accordance with the terms of the Offer (including, if the
Offer is extended or amended, the terms or conditions of any such extension or
amendment), the undersigned hereby sells, assigns and transfers to or upon the
order of the Trust all right, title and interest in and to all Common Shares
tendered hereby that are purchased pursuant to the Offer and hereby irrevocably
constitutes
<PAGE>
and appoints Dean Witter Trust Company (the "Depositary") as attorney-in-fact of
the undersigned with respect to such Common Shares, with full power of
substitution (such power of attorney being deemed to be an irrevocable power
coupled with an interest), to (a) deliver certificates for such Common Shares or
transfer ownership of such Common Shares on the Trust's books, together in
either such case with all accompanying evidences of transfer and authenticity,
to or upon the order of the Trust, upon receipt by the Depositary, as the
undersigned's agent, of the NAV per Common Share with respect to such Common
Shares; (b) present certificates for such Common Shares, if any, for
cancellation and transfer on the Trust's books; (c) deduct from the Purchase
Price deposited with the Depositary the applicable Early Withdrawal Charge and
remit such charge to Dean Witter InterCapital Inc. ("InterCapital"), and (d)
receive all benefits and otherwise exercise all rights of beneficial ownership
of such Common Shares, subject to the next paragraph, all in accordance with the
terms of the Offer.
 
    The undersigned hereby represents and warrants that: (a) the undersigned
"owns" the Common Shares tendered hereby within the meaning of Rule 10b-4
promulgated under the Securities Exchange Act of 1934, as amended, and has full
power and authority to validly tender, sell, assign and transfer the Common
Shares tendered hereby; (b) when and to the extent the Trust accepts the Common
Shares for purchase, the Trust will acquire good, marketable and unencumbered
title to them, free and clear of all security interests, liens, charges,
encumbrances, conditional sales agreements or other obligations relating to
their sale or transfer, and not subject to any adverse claim; (c) on request,
the undersigned will execute and deliver any additional documents the Depositary
or the Trust deems necessary or desirable to complete the assignment, transfer
and purchase of the Common Shares tendered hereby; and (d) the undersigned has
read and agrees to all of the terms of the Offer.
 
    The names and addresses of the registered owners should be printed, if they
are not already printed above, as they appear on the registration of the Common
Shares. The certificate numbers, if any, and the number of Common Shares that
the undersigned wishes to tender should be indicated in the appropriate boxes.
 
    The undersigned recognizes that under certain circumstances set forth in the
Offer to Purchase, the Trust may terminate or amend the Offer or may not be
required to purchase any of the Common Shares tendered hereby. In any such
event, the undersigned understands that certificate(s) for any Common Shares not
purchased, if any, will be returned to the undersigned at the address indicated
above unless otherwise indicated under the Special Payment Instructions or
Special Delivery Instructions below. The undersigned recognizes that the Trust
has no obligation, pursuant to the Special Payment Instructions, to transfer any
Common Shares from the name of the registered owner thereof if the Trust
purchases none of such Common Shares.
 
    The undersigned understands that acceptance of Common Shares by the Trust
for payment will constitute a binding agreement between the undersigned and the
Trust upon the terms and subject to the conditions of the Offer.
 
    The check for the Purchase Price of the tendered Common Shares purchased,
minus any applicable Early Withdrawal Charge, will be issued to the order of the
undersigned and mailed to the address indicated above unless otherwise indicated
under the Special Payment Instructions or the Special Delivery Instructions
below. Shareholders tendering Common Shares shall be entitled to receive all
dividends declared on or before the Expiration Date, but not yet paid, on Common
Shares tendered pursuant to the Offer. The Trust will not pay interest on the
Purchase Price under any circumstances.
 
    All authority herein conferred or agreed to be conferred shall survive the
death or incapacity of the undersigned and all obligations of the undersigned
hereunder shall be binding upon the heirs, personal representatives, successors
and assigns of the undersigned. Except as stated in the Offer, this tender is
irrevocable.
 
<TABLE>
<S>                                                 <C>
           SPECIAL PAYMENT INSTRUCTIONS                       SPECIAL DELIVERY INSTRUCTIONS
         (See Instructions 4, 5, 6 and 7)                       (See Instructions 4 and 7)
                                                    To be completed ONLY if certificates for Common
                                                    Shares not tendered or not purchased and/or any
To be completed ONLY if certificates for Common     checks issued in the name of the undersigned are
Shares not tendered or not purchased and/or any     to be sent to someone other than the undersigned
checks are to be issued in the name of or sent to   or to the undersigned at an address other than
someone other than the undersigned.                 that shown above.
 
Issue:    / / check                                 Mail:    / / check
         / / certificates to:                       / / certificates to:
 
Name(s)                                             Name(s)
- ---------------------------------------------       ---------------------------------------------
                  (Please Print)                                      (Please Print)
 
Address                                             Address
- ---------------------------------------------       ---------------------------------------------
 
- --------------------------------------------------  --------------------------------------------------
                (Include Zip Code)                                  (Include Zip Code)
 
- --------------------------------------------------  --------------------------------------------------
           (Taxpayer Identification or                            (Tax Identification or
            Social Security Number(s))                          Social Security Number(s))
</TABLE>
 
<PAGE>
 
<TABLE>
<S>       <C>                                                                     <C>
 
                           SHAREHOLDER(S) SIGN HERE
                             (See Instructions 1 and 5)
                  (Please see Substitute Form W-9 on Reverse Side)
Must be signed by registered owner(s) exactly as registered or by person(s) authorized to
become registered owner(s) by documents transmitted with the Letter of Transmittal. If
signature is by attorney-in-fact, executor, administrator, trustee, guardian, officer of a
corporation or another acting in a fiduciary or representative capacity, please set forth
the full title. See Instruction 5.
          ----------------------------------------------------------------------
 
          ----------------------------------------------------------------------
                     (SIGNATURE(S) OF OWNER(S) EXACTLY AS REGISTERED)
 
          Dated --------------------------------------------- , 19----
 
          Name(s) ------------------------------------------------------
 
          ----------------------------------------------------------------------
                                      (PLEASE PRINT)
          ----------------------------------------------------------------------
                    (TAX IDENTIFICATION OR SOCIAL SECURITY NUMBER(S))
 
          Area Code and Daytime Telephone Number (   ) ------------------------
 
                                GUARANTEE OF SIGNATURE(S)
                                (See Instructions 1 and 5)
 
          Authorized Signature
          ----------------------------------------------------------------
 
          Name
          ----------------------------------------------------------------------
                                      (PLEASE PRINT)
 
          Title
          ----------------------------------------------------------------------
 
          Name of Firm
          ----------------------------------------------------------------------
 
          Address
          ----------------------------------------------------------------------
 
          ----------------------------------------------------------------------
 
          ----------------------------------------------------------------------
                                    (INCLUDE ZIP CODE)
 
          ----------------------------------------------------------------------
 
          Area Code and Telephone Number ------------------------
 
          Dated --------------------------------------------- , 19----
</TABLE>
<PAGE>
                                  INSTRUCTIONS
 
             FORMING PART OF THE TERMS AND CONDITIONS OF THE OFFER
 
    1.  GUARANTEE OF SIGNATURES.  If the Letter of Transmittal is signed by the
registered owner of the Common Shares, the payment of the Purchase Price is to
be sent to the registered owner of the Common Shares and to the address shown in
the Common Share registration, unless such owner has completed the box entitled
either "Special Payment Instructions" or "Special Delivery Instructions" above,
no signature guarantee is required. In all other cases, all signatures on this
Letter of Transmittal must be guaranteed by an eligible guarantor acceptable to
the Depositary (an "Eligible Guarantor") (shareholders should contact the
Depositary for a determination as to whether a particular institution is an
Eligible Guarantor).
 
    2.  DELIVERY OF LETTER OF TRANSMITTAL AND CERTIFICATES.  This Letter of
Transmittal is to be used only if you do not have a brokerage account at DWR or
you desire to effect the tender offer transaction yourself. A properly completed
and duly executed Letter of Transmittal or manually signed facsimile of it, any
certificates representing Common Shares tendered and any other documents
required by this Letter of Transmittal should be mailed or delivered to the
Depositary at the appropriate address set forth herein and must be received by
the Depositary on or prior to the Expiration Date (as defined in the Offer to
Purchase).
 
    THE METHOD OF DELIVERY OF ALL DOCUMENTS, INCLUDING CERTIFICATES FOR COMMON
SHARES, IS AT THE ELECTION AND RISK OF THE TENDERING SHAREHOLDER. IF DELIVERY IS
BY MAIL, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED, PROPERLY INSURED, IS
RECOMMENDED.
 
    The Trust will not accept any alternative, conditional or contingent
tenders. All tendering shareholders, by execution of this Letter of Transmittal
(or a manually signed facsimile of it), waive any right to receive any notice of
the acceptance of their tender.
 
    3.  INADEQUATE SPACE.  If the space provided in the box captioned
"Description of Common Shares Tendered" is inadequate, the certificate numbers,
if any, and number of Common Shares should be listed on a separate signed
schedule attached hereto.
 
    4.  PARTIAL TENDERS AND UNPURCHASED SHARES.  If fewer than all of the Common
Shares evidenced by any certificate submitted are to be tendered, fill in the
number of Common Shares which are to be tendered in the column entitled "No. of
Common Shares Tendered." In such case, if any tendered Common Shares are
purchased, a new certificate for the remainder of the Common Shares evidenced by
your old certificate(s) will be issued and sent to the registered owner, unless
otherwise specified in the "Special Payment Instructions" or "Special Delivery
Instructions" boxes on this Letter of Transmittal, as soon as practicable after
the Expiration Date of the Offer. All Common Shares represented by certificates
listed and delivered to the Depositary are deemed to have been tendered unless
otherwise indicated.
 
    5.  SIGNATURES ON LETTER OF TRANSMITTAL, AUTHORIZATIONS AND ENDORSEMENTS.
 
    (a) If this Letter of Transmittal is signed by the registered owner(s) of
the Common Shares tendered hereby, the signature(s) must correspond exactly with
the name(s) in which the Common Shares are registered.
 
    (b) If the Common Shares are held of record by two or more joint owners,
each such owner must sign this Letter of Transmittal.
 
    (c) If any tendered Common Shares are registered in different names, it will
be necessary to complete, sign and submit as many separate Letters of
Transmittal (or manually signed facsimiles of it) as there are different
registrations of Common Shares.
 
    (d) When this Letter of Transmittal is signed by the registered owner(s) of
the Common Shares listed and transmitted hereby, no endorsements of any
certificate(s) representing such Common Shares or separate authorizations are
required. If, however, payment is to be made to a person other than the
registered owner(s) or any certificates for unpurchased Common Shares are to be
issued to a person other than the registered owner(s), then the Letter of
Transmittal and, if applicable, the certificate(s) transmitted hereby, must be
endorsed or accompanied by appropriate authorizations, in either case signed
exactly as such name(s) appear on the registration of the Common Shares and on
the face of the certificate(s) and such endorsements or authorizations must be
guaranteed by an Eligible Guarantor. See Instruction 1.
 
    (e) If this Letter of Transmittal or any certificates or authorizations are
signed by trustees, executors, administrators, guardians, attorneys-in-fact,
officers of corporations or others acting in a fiduciary or representative
capacity, such persons should so indicate when signing and must submit proper
evidence satisfactory to the Trust of their authority so to act.
 
    6.  TRANSFER TAXES.  The Trust will pay all share transfer taxes, if any,
payable on the transfer to it of Common Shares purchased pursuant to the Offer.
If, however, (a) payment of the Purchase Price is to be made to any person other
than the registered owner(s), (b) (in the circumstances permitted by the Offer)
unpurchased Common Shares are to be registered in the name(s) of any person
other than the registered owner(s) or (c) tendered certificates are registered
in the name(s) of any person other than the person(s) signing this Letter of
Transmittal, the amount of any transfer taxes (whether imposed on the registered
owner(s) or such other persons) payable on account of the transfer to such
person(s) will be deducted from the Purchase Price by the Depositary unless
satisfactory evidence of the payment of such taxes, or exemption therefrom, is
submitted.
 
    7.  SPECIAL PAYMENT AND DELIVERY INSTRUCTIONS.  If certificates for
unpurchased Common Shares and/or checks are to be issued in the name of a person
other than the signer of this Letter of Transmittal or if such certificates
and/or checks are to be sent to someone other than the signer of this Letter of
Transmittal or to the signer at a different address, the captioned boxes
"Special Payment Instructions" and/or "Special Delivery Instructions" on this
Letter of Transmittal should be completed.
 
    8.  IRREGULARITIES.  All questions as to the validity, form, eligibility
(including time of receipt) and acceptance of any tender of Common Shares will
be determined by the Trust in its sole discretion, whose determination shall be
final and binding on all parties. The Trust reserves the absolute right to
reject any or all tenders determined by it not to be in appropriate form or the
acceptance of or payment for any Common Shares which may, in the opinion of the
Trust's counsel be unlawful. The Trust also reserves the absolute right to waive
any of the conditions of the Offer or any defect or irregularity in
<PAGE>
tender of any particular Common Shares or any particular shareholder, and the
Trust's interpretations of the terms and conditions of the Offer (including
these instructions) will be final and binding on all parties. Unless waived, any
defects or irregularities in connection with tenders must be cured within such
time as the Trust shall determine. Tendered Common Shares will not be accepted
for payment unless all defects and irregularities have either been cured within
such time or waived by the Trust. None of the Trust, Dean Witter Reynolds Inc.,
the Depositary, or any other person shall be obligated to give notice of defects
or irregularities in tenders, nor shall any of them incur any liability for
failure to give any such notice.
 
    9.  QUESTIONS AND REQUESTS FOR ASSISTANCE AND ADDITIONAL COPIES.  Questions
and requests for assistance may be directed to Dean Witter InterCapital Inc.,
Two World Trade Center, New York, N.Y. 10048, or by telephone (800) 869-3863
extension 61. Additional copies of the Offer to Purchase and this Letter of
Transmittal may be obtained from Dean Witter Trust Company, (by mail) P.O. Box
984, Jersey City, New Jersey 07303 or (by hand delivery or courier) Harborside
Financial Centre, Plaza Two, Jersey City, New Jersey 07311 or by telephone (800)
869-6397 extension 0.
 
    10.  SUBSTITUTE FORM W-9.  Each tendering shareholder who has not already
submitted a completed and signed Substitute Form W-9 to the Trust is required to
provide the Depositary with a correct taxpayer identification number ("TIN") on
Substitute Form W-9 which is provided under "Important Tax Information" below,
and to indicate that the shareholder is not subject to backup withholding by
checking the box in Part 2 of the form. Failure to provide the information on
the form or to check the box in Part 2 of the form may subject the tendering
shareholder to 31% federal income tax withholding on the payments made to the
shareholder or other payee with respect to Common Shares purchased pursuant to
the Offer. The box in Part 3 of the Form may be checked if the tendering
shareholder has not been issued a TIN and has applied for a TIN or intends to
apply for a TIN in the near future. If the box in Part 3 is checked and the
Depositary is not provided with a TIN within sixty (60) days, the Depositary
will withhold 31% on all such payments thereafter until a TIN is provided to the
Depositary.
 
    11.  WITHHOLDING ON FOREIGN SHAREHOLDERS.  The Depositary will withhold
federal income taxes equal to 30% of the gross payments payable to a foreign
shareholder unless the Depositary determines that a reduced rate of withholding
or an exemption from withholding is applicable. For this purpose, a foreign
shareholder is any shareholder that is not (i) a citizen or resident of the
United States, (ii) a corporation, partnership or other entity created or
organized in or under the laws of the United States or any political subdivision
thereof, or (iii) any estate or trust the income of which is subject to United
States federal income taxation regardless of the source of such income. The
Depositary will determine a shareholder's status as a foreign shareholder and
eligibility for a reduced rate of, or an exemption from, withholding by
reference to the shareholder's address and to any outstanding certificates or
statements concerning eligibility for a reduced rate of, or exemption from,
withholding unless facts and circumstances indicate that reliance is not
warranted. A foreign shareholder who has not previously submitted the
appropriate certificates or statements with respect to a reduced rate of, or an
exemption from, withholding for which such shareholder may be eligible should
consider doing so in order to avoid overwithholding. A foreign shareholder may
be eligible to obtain a refund of tax withheld if such shareholder meets one of
the three tests for capital gain or loss treatment described in Section 15 of
the Offer to Purchase or is otherwise able to establish that no tax or a reduced
amount of tax was due.
 
    IMPORTANT: THIS LETTER OF TRANSMITTAL OR A MANUALLY SIGNED FACSIMILE OF IT
(TOGETHER WITH ANY CERTIFICATES FOR COMMON SHARES AND ALL OTHER REQUIRED
DOCUMENTS) MUST BE RECEIVED BY THE DEPOSITARY ON OR BEFORE THE EXPIRATION DATE.
 
                           IMPORTANT TAX INFORMATION
 
    Under federal income tax law, a shareholder whose tendered Common Shares are
accepted for payment is required by law to provide the Depositary with such
shareholder's correct TIN on Substitute Form W-9 below. If the Depositary is not
provided with a certified TIN, the Internal Revenue Service may subject the
shareholder or other payee to a $50 penalty. In addition, payments that are made
to such shareholder or other payee with respect to Common Shares purchased
pursuant to the Offer may be subject to backup withholding.
 
    Certain shareholders (including, among others, all corporations and certain
foreign individuals) are not subject to these backup withholding and reporting
requirements. In order for a foreign individual to qualify as an exempt
recipient, the shareholder must submit a Form W-8, signed under penalties of
perjury, attesting to that individual's exempt status. A Form W-8 can be
obtained from the Depositary. See the enclosed "Guidelines for Certificate of
Taxpayer Identification Number on Substitute Form W-9" for more instructions.
 
    If backup withholding applies, the Depositary is required to withhold 31% of
any such payments made to the shareholder or other payee. Backup withholding is
not an additional tax. Rather, the tax liability of persons subject to backup
withholding will be reduced by the amount of tax withheld. If withholding
results in an overpayment of taxes, a refund may be obtained.
 
PURPOSE OF SUBSTITUTE FORM W-9
 
    To prevent backup withholding on payments made to a shareholder or other
payee with respect to Common Shares purchased pursuant to the Offer, the
shareholder who has not already submitted a completed and signed Substitute Form
W-9 to the Trust is required to notify the Depositary of the shareholder's
correct TIN by completing the form below, certifying that the TIN provided on
Substitute Form W-9 is correct (or that such shareholder is awaiting a TIN) and
that:
 
        (a) the shareholder has not been notified by the Internal Revenue
    Service that the shareholder is subject to backup withholding as a result of
    failure to report all interest or dividends; or
 
        (b) the Internal Revenue Service has notified the shareholder that the
    shareholder is no longer subject to backup withholding.
<PAGE>
WHAT NUMBER TO GIVE THE DEPOSITARY
 
    The shareholder is required to give the Depositary the TIN (e.g., social
security number or employer identification number) of the record owner of the
Common Shares. If the Common Shares are in more than one name or are not in the
name of the actual owner, consult the enclosed "Guidelines for Certification of
Taxpayer Identification Number on Substitute Form W-9" for additional guidance
on which number to report.
 
<TABLE>
<C>                          <S>                                               <C>
                                 PAYER'S NAME: DEAN WITTER TRUST COMPANY
 
                             Part 1--PLEASE PROVIDE YOUR TIN IN THE BOX AT       Social Security Number
                             RIGHT AND CERTIFY BY SIGNING AND DATING BELOW.                OR
                                                                               --------------------------
SUBSTITUTE                                                                       Employer Identification
FORM W-9                                                                                 Number
                             Part 2--Check the box if you are NOT subject to backup withholding under the
                             provisions of Section 3406(a)(1)(C) of the Internal Revenue Code because (1)
                             you have not been notified that you are subject to backup withholding as a
                             result of failure to report all interest or dividends or (2) the Internal
Department of the Treasury   Revenue Service has notified you that you are no longer subject to backup
Internal Revenue Service     withholding.  / /
</TABLE>
 
<TABLE>
<C>                             <S>                                                              <C>
                                CERTIFICATION--UNDER PENALTIES OF PERJURY, I CERTIFY THAT THE    Part 3
 PAYER'S REQUEST FOR TAXPAYER   INFORMATION PROVIDED ON THIS FORM IS TRUE, CORRECT, AND
IDENTIFICATION NUMBER ("TIN")   COMPLETE.
                                SIGNATURE --------------------------- DATE ---------------         Awaiting TIN / /
</TABLE>
 
NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
      OF 20% OF ANY PAYMENTS MADE TO YOU PURSUANT TO THE OFFER. PLEASE REVIEW
      THE ENCLOSED GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
      NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.
 
       YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED THE BOX
                        IN PART 3 OF SUBSTITUTE FORM W-9
 
<TABLE>
<S>        <C>                                                                                                          <C>
                                     CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER
           I certify under penalties of perjury that a Taxpayer Identification Number has not been issued to me, and
           either (a) I have mailed or delivered an application to receive a Taxpayer Identification Number to the
           appropriate Internal Revenue Service Center or Social Security Administration Office, or (b) I intend to
           mail or deliver an application in the near future. I understand that if I do not provide a Taxpayer
           Identification Number within sixty (60) days, 31% of all reportable payments made to me thereafter will be
           withheld until I provide a number.
 
           ----------------------------------------------------------     ------------------------------------------
           SIGNATURE                                                        DATE
</TABLE>

<PAGE>
                                                                  EXHIBIT (c)(2)
 
  FORM OF DEPOSITARY AGREEMENT BETWEEN THE TRUST AND DEAN WITTER TRUST COMPANY
<PAGE>
                              DEPOSITARY AGREEMENT
 
                                                          Date: February 7, 1997
 
Dean Witter Trust Company
2 Harborside Financial Center
Plaza Two
Jersey City, New Jersey 07311
 
Attn:  John Van Heuvelen
 
      President
 
Gentlemen:
 
    Prime Income Trust, a non-diversified, closed-end management investment
company organized as a Massachusetts business trust (the "Trust") under the name
"Allstate Prime Income Trust" is offering to purchase up to 4,000,000 of its
common shares of beneficial interest, par value $.01 per share ("Common Shares")
for cash at a price equal to their net asset value ("NAV") computed as of 4:00
P.M. New York City time on the Expiration Date, upon the terms and conditions
set forth in its Offer to Purchase dated February 12, 1997 (the "Offer to
Purchase"), and in the related Letter of Transmittal, copies of which together,
as they may be amended from time to time, constitute the "Offer." The
"Expiration Date" for the Offer shall be 12:00 midnight, New York City Time, on
March 14, 1997, unless and until the Trust shall have extended the period of
time for which the Offer is open, in which event the term "Expiration Date"
shall mean the latest time and date at which the Offer, as so extended by the
Trust, shall expire. All terms not defined herein shall have the same meaning as
in the Offer.
 
    The Trust hereby agrees with you as follows:
 
     1. You will act as the Depositary in connection with the Offer. In such
capacity you are authorized and directed to accept tenders of Common Shares in
accordance with the instructions received from the Trust. Tenders of Common
Shares may be made only as set forth in the Offer to Purchase, and tenders shall
be considered properly made to you only when:
 
        (a) if such Common Shares are evidenced by certificates, certificate(s)
    for such Common Shares, together with a properly completed and duly executed
    Letter of Transmittal or manually executed facsimile thereof and any other
    documents required by the Letter of Transmittal, are received by you on or
    prior to the Expiration Date; or
 
        (b) if such Common Shares are uncertificated, a properly completed and
    duly executed Letter of Transmittal or manually executed facsimile thereof
    indicating that such Common Shares are registered with you as Transfer Agent
    in the name of the shareholder(s) and any other documents required by the
    Letter of Transmittal, are received by you on or prior to the Expiration
    Date; or
 
        (c) if such Common Shares are uncertificated and have been tendered by
    Dean Witter Reynolds Inc. ("DWR") on behalf of a shareholder, notification
    is delivered by DWR to you by hand or transmitted by mail, telegram, telex,
    facsimile transmission or by any other acceptable form and are received by
    you on or prior to the Expiration Date, which notification, in whatever
    form, contains the name of the tendering shareholder(s) and the number of
    Common Shares tendered on behalf of such shareholder(s).
 
    To be considered validly tendered, signatures on all Letters of Transmittal
must be guaranteed by an eligible guarantor acceptable to the Depositary (an
"Eligible Guarantor") (shareholders should contact the Depositary for a
determination as to whether a particular institution is an Eligible
 
                                       1
<PAGE>
Guarantor), unless the Common Shares tendered thereby are tendered by a
registered holder of Common Shares who has not completed either the box entitled
"Special Delivery Instructions" or the box entitled "Special Payment
Instructions" on the Letter of Transmittal. If the certificates are registered
in the name of a person other than the signer of the Letter of Transmittal, the
certificates must be endorsed or accompanied by appropriate authorizations, in
either case signed exactly as the name or names of the registered owner or
owners appear on the certificates, with the signatures on the certificates or
authorizations guaranteed as aforesaid and accompanied by such other
documentation as is customarily required by transfer agents under such
circumstances. Notwithstanding the foregoing provisions of this paragraph,
Common Shares that the Trust shall approve as having been properly tendered
shall be considered to be properly tendered.
 
    You are also authorized and directed to return to any person tendering
Common Shares, in the manner described in Section 7 hereof, any certificates
representing Common Shares tendered by such person but duly withdrawn pursuant
to the Offer to Purchase. To be effective, a written, telegraphic, telex or
facsimile transmission notice of withdrawal must be received by you within the
time period specified for withdrawal in the Offer to Purchase at your address
set forth on the back page of the Offer to Purchase. Any notice of withdrawal
must specify the name of the person having deposited the Common Shares to be
withdrawn, the number of Common Shares to be withdrawn and, if the certificates
representing such Common Shares have been delivered or otherwise identified to
you, the name of the registered holder(s) of such Common Shares as set forth in
such certificates. If the certificates have been delivered to you, then prior to
the release of such certificates the tendering stockholder must also submit the
serial numbers shown on the particular certificate evidencing such Common Shares
and the signature on the notice of withdrawal must be guaranteed by an Eligible
Guarantor. If Common Shares have been tendered pursuant to the procedures
described in subparagraph (b) above, the notice of withdrawal must specify the
name and number of the shareholder's account established with you as Transfer
Agent to be credited with the withdrawn Common Shares. If Common Shares have
been tendered on behalf of the shareholder by DWR pursuant to the procedures
described in subparagraph (c) above, a notice of withdrawal which follows the
procedures described above for uncertificated shares may be delivered by DWR.
All questions as to the form and validity (including time of receipt) of notices
of withdrawal will be determined by the Trust in its sole discretion whose
determination shall be final and binding. Any Common Shares withdrawn shall no
longer be considered to be properly tendered unless such Common Shares are
re-tendered on or prior to the Expiration Date pursuant to the Offer to
Purchase.
 
     2. You are authorized and directed to examine any certificate representing
Common Shares, Letter of Transmittal (or facsimile thereof) and any other
document required by the Letter of Transmittal, which is delivered or mailed to
you to determine whether any tender is defective. In the event that any Letter
of Transmittal or other document has been improperly completed or executed or
any of the certificates for Common Shares are not in proper form for transfer
(as required by the aforesaid instructions) or if some other irregularity in
connection with the tender of Common Shares exists, you are authorized to advise
the tendering stockholder of the existence of the irregularity, but you are not
authorized (unless otherwise instructed by the Trust) to accept any tender of
fractional Common Shares, any tender not in accordance with the terms and
subject to the conditions set forth in the Offer, or any other tender which you
deem to be defective.
 
    Promptly upon your determination that any tender is defective, you shall,
after consultation with and on the instruction of the Trust, use your best
efforts to notify the person tendering such Common Shares of such determination
and, if applicable, may return the certificates involved to such person in the
manner described in Section 7 hereof. The Trust shall have full discretion to
determine whether any tender is complete and proper and have the absolute right
to reject any or all tenders of any particular Common Shares determined by it
not to be in proper form and to determine whether the acceptance of or payment
for such tenders may, in the opinion of counsel for the Trust, be unlawful; it
 
                                       2
<PAGE>
being specifically agreed that you shall neither have discretion nor
responsibility with respect to these determinations. The Trust also reserves the
absolute right to waive any of the conditions of the Offer or any defect or
irregularity in the tender of any particular Common Shares. The interpretation
by the Trust of the terms and conditions of the Offer to Purchase and Letter of
Transmittal shall be final and binding.
 
     3. Any extension of the Offer, as the Trust shall determine, shall be
effective upon notice to you from the Trust given prior to the time the Offer
would otherwise have expired, and shall be promptly confirmed by the Trust in
writing. If at any time the Offer shall be terminated as permitted by the terms
thereof, the Trust shall promptly notify you of such termination.
 
     4. At 5:00 P.M. New York City time, or as promptly as practicable
thereafter, daily or more frequently if requested as to major tally figures, you
shall advise each of the parties named below by telephone as to (i) the number
of Common Shares duly tendered; (ii) the number of Common Shares defectively
tendered; (iii) the number of Common Shares duly tendered represented by
certificates physically held by you as Transfer Agent; (iv) the number of Common
Shares tendered through DWR; (v) the number of Common Shares withdrawn on such
day; and (vi) the cumulative totals of Common Shares in categories (i) thru (v)
above through 12:00 noon on such day:
 
    (a) Sheldon Curtis, Esq. or
 
        Ruth Rossi, Esq.
 
        Prime Income Trust
 
        Two World Trade Center
 
        New York, New York 10048
 
        (212) 392-1520
 
    (b) Charles A. Fiumefreddo
 
        Dean Witter InterCapital Inc.
 
        Two World Trade Center
 
        New York, New York 10048
 
        (212) 392-1550
 
    You should also furnish to the above-named persons a written report
confirming the above information which has been communicated orally on the day
following such oral communication.
 
    You shall furnish to the above-named persons and the Trust, such reasonable
information on the tendering shareholders as may be requested from time to time.
 
    You shall furnish to the Trust, upon request, master lists of Common Shares
tendered for purchase, including an A to Z list of the tendering shareholders.
 
    You are also authorized and directed to provide the persons listed above or
any other persons designated by such persons and approved by the Trust with such
other information relating to the Common Shares, the Offer to Purchase, and
Letters of Transmittal, as the Trust may reasonably request from time to time.
 
     5. Letters of Transmittal, Telegrams, Telexes, Facsimile Transmissions,
Notices and Letters submitted to you pursuant to the Offer to Purchase shall be
stamped by you to indicate the date and time of the receipt thereof and these
documents, or copies thereof, shall be preserved by you for a reasonable time
not to exceed one year or the term of this Agreement, whichever is longer, and
thereafter shall be delivered by you to the Trust.
 
     6. (a)  If under the terms and conditions set forth in the Offer to
Purchase the Trust becomes obligated to accept and pay for Common Shares
tendered, upon instruction by the Trust and as promptly as practicable you
shall, subject to Section 7 hereof, deliver or cause to be delivered to the
tendering shareholders and designated payees, consistent with this Agreement and
the Letter of
 
                                       3
<PAGE>
Transmittal, payment in the amount of the applicable purchase price specified in
the Offer for the Common Shares theretofore properly tendered and purchased
under the terms and conditions of the Offer. The Trust shall ensure that
sufficient funds are available to you to enable you to deliver or cause to be
delivered such payment.
 
    (b)  At such time as shall be determined by the Trust, you shall effect the
transfer of all Common Shares purchased pursuant to the Offer, in accordance
with instructions from the Trust, and deliver the certificates for such Common
Shares to the Trust.
 
     7. If, pursuant to the terms and conditions of the Offer, the Trust does
not accept certain of the Common Shares tendered or a shareholder withdraws any
tendered Common Shares, you shall promptly return the deposited certificates, if
any, for such Common Shares and a duplicate of the Letter of Transmittal
relating to such Common Shares, together with any other required documents, to
the persons who deposited the same, without expense to such person. If a
shareholder delivers to you a certificate representing a number of Common Shares
in excess of the number of Common Shares tendered by such shareholder, you shall
promptly after the Expiration Date return to such shareholder a certificate
representing the Common Shares not tendered. Certificates, if any, for such
unpurchased Common Shares shall be forwarded by you by (i) first class mail
under a blanket surety bond protecting you and the Trust from loss or
liabilities arising out of the non-receipt or non-delivery of such Common
Shares; or (ii) registered mail insured separately for the replacement value of
such Common Shares.
 
     8. You shall take all reasonable action as may from time to time be
requested by the Trust and you shall be reasonably compensated for such action.
 
     9. For your services as Depositary hereunder you shall be entitled to
compensation as described in the Transfer Agency and Service Agreement between
you and the Trust dated as of August 1, 1993, as amended to date.
 
    10. As Depositary hereunder you:
 
        (a) shall have no duties or obligations other than those specifically
    set forth herein or in Exhibits A and B hereto, or as may subsequently be
    agreed to by you and the Trust;
 
        (b) shall have no obligation to make payment for any tendered Common
    Shares unless the Trust shall have provided the necessary funds to pay in
    full all amounts due and payable with respect thereto;
 
        (c) shall be regarded as making no representations and having no
    responsibilities as to the validity, sufficiency, value or genuineness of
    any certificates of the Common Shares represented thereby deposited with you
    hereunder and will not be required to and will make no representations as to
    the validity, value, or genuineness of the Offer;
 
        (d) shall not be obligated to take any legal action hereunder and where
    the taking of such action might in your judgment involve any expense or
    liability you shall not act unless you shall have been furnished with an
    indemnity reasonably satisfactory to you;
 
        (e) may rely on and shall be protected in acting upon any certificate,
    instrument, opinion, notice, letter, telegram, or other document or security
    delivered to you and believed by you to be genuine and to have been signed
    by the proper party or parties;
 
        (f) may rely on and shall be protected in acting upon the written and
    oral instructions, with respect to any matter relating to your actions as
    Depositary specifically covered by this Agreement (or supplementing or
    qualifying any such actions), of officers of the Trust;
 
        (g) may consult counsel satisfactory to you, including your in-house
    counsel, and the opinion of such counsel shall be full and complete
    authorization and protection in respect of any action
 
                                       4
<PAGE>
    taken, suffered, or omitted by you hereunder in good faith and in accordance
    with the opinion of such counsel;
 
        (h) shall not be called upon at any time to, and shall not, advise any
    person tendering pursuant to the Offer as to the wisdom of making such
    tender or as to the market value of any security tendered thereunder; and
 
        (i) are not authorized, and shall have no obligation, to pay any
    brokers, dealers, or soliciting fees to any person.
 
    11. The Trust covenants to indemnify and hold you harmless against any loss,
liability, or expense (including any loss, liability, or expense incurred for
submitting for transfer Common Shares tendered without a signature guarantee
pursuant to the Letter of Transmittal and including the reasonable fees and
expenses of your counsel) incurred without negligence or bad faith on your part
arising out of or in connection with the administration of your duties
hereunder, including the costs and expenses of defending yourself against any
claim or liability in the premises. In no case shall the Trust be liable under
this indemnity with respect to any claim against you unless the Trust shall be
notified by you, by letter or by telex confirmed by letter, of the written
assertion of a claim against you or of any action commenced against you,
promptly after you shall have been served with the summons, or other first legal
process giving information as to the nature and basis of the claim, but failure
to so notify the Trust shall not release the Trust of any liability which it may
otherwise have on account of this Agreement. The Trust shall be entitled to
participate at its own expense in the defense of any suit brought to enforce any
such claim.
 
    12. Unless terminated earlier by the parties hereto, this Agreement shall
terminate upon conclusion of the Offer.
 
    13. The instructions contained herein may be modified or supplemented by the
Trust or by an officer thereof authorized to give any notice, approval, or
waiver on its behalf. In the event that any claim of inconsistency between this
Agreement and the terms of the Offer arise, as they may from time to time be
amended, the terms of the Offer shall control, except with respect to the
duties, liabilities and indemnification of you as Depositary which shall be
controlled by the terms of this Agreement.
 
    14. If any provision of this Agreement shall be held illegal, invalid, or
unenforceable by any court, this Agreement shall be construed and enforced as if
such provision had not been contained herein and shall be deemed an Agreement
among us to the full extent permitted by applicable law.
 
    15. This Agreement shall be governed by and construed in accordance with the
laws of the State of New York, and shall inure to the benefit of and be binding
upon the successors and assigns of the parties hereto; provided that this
Agreement may not be assigned by you without the prior written consent of the
Trust.
 
                                       5
<PAGE>
    Please acknowledge receipt of this Letter, the Offer to Purchase and the
Letter of Transmittal and confirm the arrangements herein provided by signing
and returning the enclosed copy hereof, whereupon this Agreement and your
acceptance of the terms and conditions herein provided shall constitute a
binding Agreement between us.
 
                                          Very truly yours,
 
                                          PRIME INCOME TRUST
 
                                          By:
                                          --------------------------------------
 
                                                       (Name & Title)
 
Accepted as of the date
first above written:
 
DEAN WITTER TRUST COMPANY,
 as DEPOSITARY
 
By:
- --------------------------------------
 
             (Name & Title)
 
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