N.Y. Comp. Codes R. & Regs. tit. 20 § 2395.1
For purposes of section 924-a of the Real Property Tax Law, the rate of interest applicable to the third calendar quarter of each year as set on or before the 15th day of July in each year by the Commissioner of Taxation and Finance pursuant to section 697 (j) of the Tax Law shall, except as otherwise provided by law, be the rate of interest for the collection period commencing on or after the first day of September next succeeding the date the rate of interest is set. In no event shall the rate be less than the rate of interest specified by section 924-a of the Real Property Tax Law. The rate of interest is set without promulgation by a regulation of the Commissioner of Taxation and Finance. See Part 2393 of this Chapter for further information regarding the rate of interest set under section 697 (j) of the Tax Law.
N.Y. Comp. Codes R. & Regs. Tit. 20 § 2395.1