Exhibit 99.1350CERT

Certification Pursuant to Rule 30a-2(b) under the 1940 Act and
Section 906 of the Sarbanes Oxley Act

Pursuant to 18 U.S.C. § 1350, the undersigned officer of CMA Tax-Exempt Fund and Master Tax-Exempt LLC (the
“registrants”), hereby certifies, to the best of her knowledge, that the registrants' Report on Form N-CSR for the period
ended September 30, 2009, (the “Report”) fully complies with the requirements of Section 15(d) of the Securities Exchange
Act of 1934, as amended, and that the information contained in the Report fairly presents, in all material respects, the
financial condition and results of operations of the registrants.

Date: November 20, 2009

/s/ Anne F. Ackerley

Anne F. Ackerley
Chief Executive Officer (principal executive officer) of
CMA Tax-Exempt Fund and Master Tax-Exempt LLC

Pursuant to 18 U.S.C. § 1350, the undersigned officer of CMA Tax-Exempt Fund and Master Tax-Exempt LLC (the
“registrants”), hereby certifies, to the best of his knowledge, that the registrants' Report on Form N-CSR for the period
ended September 30, 2009, (the “Report”) fully complies with the requirements of Section 15(d) of the Securities Exchange
Act of 1934, as amended, and that the information contained in the Report fairly presents, in all material respects, the
financial condition and results of operations of the registrants.

Date: November 20, 2009

/s/ Neal J. Andrews

Neal J. Andrews
Chief Financial Officer (principal financial officer) of
CMA Tax-Exempt Fund and Master Tax-Exempt LLC

This certification is being furnished pursuant to Rule 30a-2(b) under the Investment Company Act of 1940, as amended,
and 18 U.S.C. Section 1350 and is not being filed as part of the Form N-CSR with the Securities and Exchange
Commission.