Exhibit 99.906.CERT

                     CERTIFICATIONS PURSUANT TO SECTION 906
                            OF THE SARBANES-OXLEY ACT

     Vincent M. Marra, President, and Donna M. Handel, Treasurer of SunAmerica
Income Funds (the "Registrant"), each certify to the best of his or her
knowledge that:

1.   The attached Form N-CSR report of the Registrant fully complies with the
     requirements of Sections 13(a) and 15(d) of the Securities Exchange Act of
     1934; and

2.   The information contained in such N-CSR report fairly represents, in all
     material respects, the financial conditions and results of operations of
     the Registrant as of, and for, the periods presented in the report.

Dated: May 21, 2007

/s/ Vincent M. Marra
    ---------------
    Vincent M. Marra
    President

/s/ Donna M. Handel
    ---------------
    Donna M. Handel
    Treasurer