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
      7/31/05 (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: 09/30/2005
      -----------------------------


                                      By: /s/ Jean Bernhard Buttner
                                          --------------------------------------
                                          Jean Bernhard Buttner
                                          Chairman and President
                                          Value Line Aggressive Income Trust



                                                             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, 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
      7/31/05 (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: 09/30/2005
      -----------------------------


                                      By: /s/ David T. Henigson
                                          --------------------------------------
                                          David T. Henigson
                                          Vice President and Secretary/Treasurer
                                          Value Line Aggressive Income Trust