On or before each November 15th thereafter, in addition to the amount due for the current year billing and for the payment of the annual amortized installment, the Comptroller shall advise each participating employer of amortization amount still outstanding and be authorized to accept the prepayment of any balance remaining to be paid by December 15th of that year, including interest.
N.Y. Comp. Codes R. & Regs. Tit. 2 § 347.3