c52946_ex99-906cert.htm -- Converted by SEC Publisher, created by BCL Technologies Inc., for SEC Filing

EX-99.906CERT 8 c52946_ex99-906cert.htm c52946_ex99-906cert.htm -- Converted by SEC Publisher, created by BCL Technologies Inc., for SEC Filing

CERTIFICATIONS PURSUANT TO SECTION 906

EX-99.906CERT

CERTIFICATION

R. Jay Gerken, Chief Executive Officer, and Frances M. Guggino, Chief Financial Officer of Legg Mason Partners Premium Money Market Trust– Citi Premium U.S. Treasury Reserves (the “Registrant”), each certify to the best of his knowledge that:

1. The Registrant’s periodic report on Form N-CSR for the period ended February 29, 2008 (the “Form N-CSR”) fully complies with the requirements of section 15(d) of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant.


Chief Executive Officer		Chief Financial Officer
Legg Mason Partners		Legg Mason Partners
Premium Money Market Trust–		Premium Money Market Trust–
Citi Premium U.S. Treasury Reserves		Citi Premium U.S. Treasury Reserves


/s/ R. Jay Gerken		/s/ Frances M. Guggino
R. Jay Gerken		Frances M. Guggino
Date: May 02, 2008		Date: May 02, 2008

This certification is being furnished to the Securities and Exchange Commission solely pursuant to 18 U.S.C. § 1350 and is not being filed as part of the Form N-CSR with the Commission.