Maryland Code, Business Regulation § 11-515.1

(a) Notwithstanding § 11-515 of this subtitle, the amount of the takeout relating to purses, the Maryland-Bred Race Fund, and the amount retained by the licensee may be allocated in accordance with the terms of a written agreement signed by the authorized representatives of:

(b) Nothing in this section may be construed to permit the licensee to in any way alter the mandatory takeout allocated to the Commission for the State tax.