EX-99.906CERT

Section 906 Certifications

                CERTIFICATION PURSUANT TO 18 U.S.C SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

John V. Murphy, Principal Executive Officer, and Brian W. Wixted, Principal
Financial Officer, of Oppenheimer Capital Income Fund (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
     February 28, 2007 (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. This certification is being furnished to the Commission solely
     pursuant to 18 U.S.C. ss. 1350 and is not being filed as part of the Form
     N-CSR filed with the Commission.

Principal Executive Officer                      Principal Financial Officer

Oppenheimer Capital Income Fund                  Oppenheimer Capital Income Fund



/s/John V. Murphy                                /s/Brian W. Wixted
- ----------------------                           ----------------------
John V. Murphy                                   Brian W. Wixted

Date: April 10, 2007                             Date: April 10, 2007