Exhibit 99.906.CERT CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 I, Jean Bernhard Buttner, Chairman and President of the Value Line Aggressive Income Trust (the "Registrant"), certify that: 1. The periodic report on Form N-CSR of the Registrant for the period ended 1/31/05 (the "Form N-CSR") 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 Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant. Date: April 5, 2005 -------------------- By: /s/ Jean Bernhard Buttner ------------------------- Jean Bernhard Buttner Chairman and President Value Line Aggressive Income Trust Exhibit 99.CERT CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 I, David T. Henigson, Vice President and Secretary/Treasurer of the Value Line Aggressive Income Trust (the "Registrant"), certify that: 1. The periodic report on Form N-CSR of the Registrant for the period ended 1/31/05 (the "Form N-CSR") 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 Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant. Date: April 5, 2005 -------------------- By: /s/ David T. Henigson --------------------- David T. Henigson Vice President and Secretary/Treasurer Value Line Aggressive Income Trust