EXHIBIT 32

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

We, Andrew F. Jacobs, President and Chief Executive Officer, and Phillip A. Reinsch, Senior Vice President and Chief Financial Officer of Capstead Mortgage Corporation (the “Company”), certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350 that:

1.	The Quarterly Report on Form 10-Q of the Company for the quarter ended March 31, 2006 (the “Report”) fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934 (15 U.S.C. 78m); and
2.	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 5, 2006	By:	/s/ ANDREW F. JACOBS
		Andrew F. Jacobs
		President and Chief Executive Officer
Date: May 5, 2006	By:	/s/ PHILLIP A. REINSCH
		Phillip A. Reinsch
		Senior Vice President and
		Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.