EX-99.906 CERT 3 exh99906cert053105it.txt USAA INVESTMENT TRUST - CERTIFICATION 05-31-2005 SECTION 906 CERTIFICATION CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Name of Issuer: USAA INVESTMENT TRUST (except Total Return Strategy Fund) In connection with the Annual Report on Form N-CSR (Report) of the above-named issuer for the Funds for the period ended May 31, 2005, the undersigned hereby certifies, that: 1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and 2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the issuer. Date: August 2, 2005 \s\ CHRISTOPHER W. CLAUS ---------------------- -------------------------------- Christopher W. Claus President SECTION 906 CERTIFICATION CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Name of Issuer: USAA INVESTMENT TRUST (except Total Return Strategy Fund) In connection with the Annual Report on Form N-CSR (Report) of the above-named issuer for the Funds for the period ended May 31, 2005, the undersigned hereby certifies, that: 1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and 2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the issuer. Date: August 2, 2005 \s\ DEBRA K. DUNN -------------- ------------------- Debra K. Dunn Treasurer