CERTIFICATION PURSUANT TO RULE 30A-2(B) UNDER THE 1940 ACT AND SECTION 906 OF
                             THE SARBANES-OXLEY ACT

I, James D. Dondero, Chief Executive Officer of Highland Floating Rate Fund (the
"Registrant"), certify that:

         1.     The Form N-CSR of the Registrant  (the "Report")  fully complies
                with  the   requirements  of  Section  13(a)  or  15(d)  of  the
                Securities Exchange Act of 1934, as amended; and

         2.     The information  contained in the Report fairly presents, in all
                material  respects,  the  financial  condition  and  results  of
                operations of the Registrant.


Date:    APRIL 26, 2006                    /S/ JAMES D. DONDERO
     --------------------------      -------------------------------------------
                                     James D. Dondero, Chief Executive Officer
                                     (principal executive officer)


I, M. Jason Blackburn,  Chief Financial  Officer of Highland  Floating Rate Fund
(the "Registrant"), certify that:

         1.     The Form N-CSR of the Registrant  (the "Report")  fully complies
                with  the   requirements  of  Section  13(a)  or  15(d)  of  the
                Securities Exchange Act of 1934, as amended; and

         2.     The information  contained in the Report fairly presents, in all
                material  respects,  the  financial  condition  and  results  of
                operations of the Registrant.


Date:    APRIL 26, 2006                    /S/ M. JASON BLACKBURN
     --------------------------      -------------------------------------------
                                     M. Jason Blackburn, Chief Financial Officer
                                     (principal financial officer)