RMR F.i.r.e Fund (XRFRX) N-CSR Certified annual shareholder report (management investment company)

QuickLinks -- Click here to rapidly navigate through this document

EXHIBIT 99.906 CERT

SECTION 906 CERTIFICATION

        We, Adam D. Portnoy, President, and Mark L. Kleifges, Treasurer, of RMR F.I.R.E. Fund (the "registrant"), certify that:

1.

The report on Form N-CSR of the registrant for the period ended December 31, 2007 (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.

By:	/s/  ADAM D. PORTNOY      Adam D. Portnoy President
Date: February 22, 2008
By:	/s/  MARK L. KLEIFGES      Mark L. Kleifges Treasurer
Date: February 22, 2008

QuickLinks

EXHIBIT 99.906 CERT

SECTION 906 CERTIFICATION