UNITED STATES
                    SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C. 20549

                                  FORM 15

       CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER
   SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF
     DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES
                           EXCHANGE ACT OF 1934.

              Commission File Numbers: 033-18169; 811-05375

                       Putnam Master Income Trust
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             (Exact name of registrant as specified in its charter)

                         One Post Office Square
                            Boston, MA 02109
                              617-292-1000
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              (Address, including zip code, and telephone number,
       including area code, of registrant's principal executive offices)

                       Common Shares of Beneficial Interest
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            (Title of each class of securities covered by this Form)

                              Not applicable
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  (Titles of all other classes of securities for which a duty to file reports
                     under section 13(a) or 15(d) remains)

     Please place an X in the box(es) to designate the appropriate rule
provision(s) relied upon to terminate or suspend the duty to file reports:

                        View This Table In Excel

       Rule 12g-4(a)(1)(i) X     Rule 12h-3(b)(1)(i) o
       Rule 12g-4(a)(1)(ii)o     Rule 12h-3(b)(1)(ii)o
       Rule 12g-4(a)(2)(i) o     Rule 12h-3(b)(2)(i) o
       Rule 12g-4(a)(2)(ii)o     Rule 12h-3(b)(2)(ii)o
                                 Rule 15d-6          o

Approximate number of holders of record as of the certification or notice date:

NONE

Pursuant to the requirements of the Securities Exchange Act of 1934, Putnam
Master Income Trust has caused this certification/notice to be signed on
its behalf by the undersigned duly authorized person.



Date: February 28, 2005                By:   /s/ Daniel T. Gallagher
                                       Name: Daniel T. Gallagher
                                       Title: Vice President and Legal and
                                       Compliance Liaison Officer

Instruction: This form is required by Rules 12g-4, 12h-3 and 15d-6 of the
General Rules and Regulations under the Securities Exchange Act of 1934.
The registrant shall file with the Commission three copies of Form 15, one
of which shall be manually signed. It may be signed by an officer of the
registrant, by counsel or by any other duly authorized person. The name and
title of the person signing the form shall be typed or printed under the
signature.

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