CERTIFICATIONS PURSUANT TO SECTION 906 | EX-99.906CERT |
CERTIFICATION
R. Jay Gerken, Chief Executive Officer, and Frances M. Guggino, Chief Financial Officer of Master Portfolio Trust - SMASh Series M Portfolio (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 April 30, 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 | ||
Master Portfolio Trust- | Master Portfolio Trust- | ||
SMASh Series M Portfolio | SMASh Series M Portfolio | ||
/s/ R. Jay Gerken | /s/ Frances M. Guggino | ||
R. Jay Gerken | Frances M. Guggino | ||
Date: June 27, 2008 | Date: June 27, 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.