N.Y. Comp. Codes R. & Regs. tit. 15, § 19.5 – Retention of operational costs by State.

(a) All city tax monies collected in district offices of the Department of Motor Vehicles located within New York City in any calendar month less “recurring operational costs” for such transactions will be distributed by the State Comptroller, upon certification from the Commissioner of Motor Vehicles, to the commissioner of finance by the end of the next succeeding month.
(b) In addition to the payments set forth in subdivision (a) of this section, the State Comptroller, upon certification from the Commissioner of Motor Vehicles, shall, after setting aside and retaining the amounts described in section 19.4(c) of this Part, less monies withheld from monthly payments, distribute to the commissioner of finance, on a quarterly basis, the balance of tax monies collected, as follows:
Quarter ending Distribution by
December 31 April 25
March 31 June 25
June 30 September 25
September 30 December 25
(c) The Department of Motor Vehicles shall deduct from its first quarterly payment to the city of New York, “implementation costs”, incurred by the Department of Motor Vehicles.
(d) The “recurring operational costs” incurred by the Department of Motor Vehicles and its agents deducted from the monthly and quarterly distributions to be made to the city of New York will be determined on a transactional basis subject to change as costs change, and, as certified from time to time by the Commissioner of Motor Vehicles.