497J 1 mm1.txt PUTNAM MONEY MARKET FUND AND PUTNAM TAX EXEMPT MONEY MARKET FUND Putnam Investments One Post Office Square Boston, MA 02109 February 3, 2005 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, DC 20549 RE: Putnam Money Market Fund (Reg. No. 2-55091) (811-02608) Post-Effective Amendment No. 37 to Registration Statement on Form N-1A Putnam Tax Exempt Money Market Fund (Reg. No. 33-15238) (811-05215) Post-Effective Amendment No. 21 to Registration Statement on Form N-1A Ladies and Gentlemen: Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, Putnam Money Market Fund and Putnam Tax Exempt Money Market Fund (the "Funds") hereby certifies that the form of Prospectuses and Statement of Additional Information that would have been filed on behalf of the Funds pursuant to Rule 497(c) upon the effectiveness of Post-Effective Amendment No. 37 and No. 21 to the Registration Statements on Form N-1A (the "Amendments") for Putnam Money Market Fund and Putnam Tax Exempt Money Market Fund , respectively, would not have differed from that contained in the Amendments, which are the most recent amendments to such Registration Statements and were filed electronically on January 28, 2005. Comments or questions concerning this certificate may be directed to Stephen J. Tate at 1-800-225-2465, ext. 1-1648. Very truly yours, PUTNAM MONEY MARKET FUND and PUTNAM TAX EXEMPT MONEY MARKET FUND /s/ Charles E. Porter By:_____________________________________ Charles E. Porter Executive Vice President, Associate Treasurer and Principal Executive Officer cc: Jason P. Pogorelec, Esq., Ropes & Gray LLP