This Part governs contracts or obligations which provide for changes, from time to time but not more often than once within any three-month period, in the rate of credit service charge charged with respect to a contract or obligation entered into by a retail seller or a contract or obligation purchased or acquired by a holder from a retail seller. The use of indices for such variable rate contracts or obligations must comply with Part 334 of this Title.
N.Y. Comp. Codes R. & Regs. Tit. 3 § 92.2