(a) A horse racetrack association shall deduct an amount from each pari-mutuel pool to be distributed as provided by Sections 2028.102, 2028.103, and 2028.104.
(b) The total maximum deduction under Subsection (a) is:
(1) 18 percent from a regular wagering pool;
(2) 21 percent from a multiple two wagering pool; and
(3) 25 percent from a multiple three wagering pool.