(a) A seller may, in a retail instalment credit agreement, contract for and, if so contracted for, the seller or holder thereof may charge, receive and collect the service charge authorized by this article, which service charge shall not exceed the rate or rates agreed upon by the seller and the buyer, including, in accordance with the provisions of the credit agreement, rates that may vary, from time to time computed, for the purposes of this section, on the outstanding indebtedness from month to month, or if the service charge so computed is less than seventy cents for any month, seventy cents. If the credit agreement provides for a variable rate of service charge, such rate shall be determined at regular intervals as set forth in the credit agreement and in accordance with such regulations as the superintendent of financial services shall prescribe but said rate shall not vary more often than once in any three month period and shall be based on a published index that is (a) readily available, (b) independently verifiable, (c) beyond the control of the seller and (d) approved by the superintendent, (e) such charges in credit agreements shall be based on the index values, or the index numbers plus or minus additional percentage points provided, however, that variations in the charge must correspond directly to the movements of the index values plus or minus additional percentage points only. Once such charge is established no lending institution may add any factors to increase the charge other than variations in the established index without the prior approval of the superintendent of financial services.
The superintendent of financial services shall adopt regulations with respect to credit agreements that provide for a variable rate of service charge, including but not limited to: (a) providing for disclosure to the buyer by the seller of the circumstances under which the rate may increase, any limitations on the increase, the effect of an increase and an example of the payment terms that would result from an increase; (b) providing for disclosure to the buyer by the seller of a history of the fluctuations of the index over a reasonable period of time; and (c) providing for notice to the buyer by the seller prior to any rate increase or change in the terms of payment. The regulations shall allow a seller, holder or financing agency after choosing an approved index to choose a spread and a minimum and maximum rate of service charge at its discretion. A retail instalment credit agreement, whether it provides for a fixed or variable service charge, may provide for an introductory rate of service charge at either a fixed or variable rate, provided that the terms of such introductory rate, including, if applicable, the date on which the introductory rate shall terminate, are disclosed to the buyer. Such disclosure shall be contained on an application form or pre-approved written solicitation as specified pursuant to subdivisions one and one-a of section five hundred twenty of the general business law. A change in the service charge rate upon expiration of an introductory rate shall not be considered a variable rate or a change in terms. The service charge rate in effect after expiration of an introductory rate may apply to all amounts due under the credit agreement regardless of when incurred, and disclosure of the same shall be provided to the buyer in the written agreement.
(e) No change in the terms of a retail instalment credit agreement shall take effect unless at least 30 days prior to the effective date of such change, a written notice has been mailed or delivered to the buyer that clearly and conspicuously describes such change and the indebtedness to which it applies, and if the change has the effect of increasing the rate of service charge, either (a) the notice states that the incurrence by the buyer or another person authorized by him of any further indebtedness under the plan to which the agreement relates on or after the effective date of such change specified in the notice shall constitute acceptance of such change, and either the buyer agrees in writing to such change or the buyer or another person authorized by him incurs such further indebtedness on or after the effective date of the change stated in the notice, or (b) the notice advises the buyer that he has thirty days from the earlier of the mailing or delivery of the notice to advise the seller under or holder of a retail installment credit agreement in writing that he does not accept such change, provided that such notice contains an address to which the buyer may send notice of his election not to accept the change and also provided that the notice specifies that the change will take effect absent receipt of the buyer's written objection to the change. Any buyer who has received a notice pursuant to clause (a) who does not agree in writing to the change and no further indebtedness is incurred under the plan to which the agreement relates, and any buyer who gives a timely notice, pursuant to clause (b), electing not to accept the change shall be permitted to pay his outstanding indebtedness in accordance with the terms of the retail installment credit agreement but the seller or holder may terminate the amount of credit available to the buyer and may require the buyer to return all credit cards issued in connection with a retail installment credit agreement. If such a buyer subsequently uses a credit card to obtain credit under a retail installment credit agreement, such use shall constitute acceptance of the change of terms and shall be deemed to have been accepted and shall become effective as to the buyer as of the date such change would have become effective but for the giving of notice by the buyer. If notice is given pursuant to clause (b) and the buyer does not timely object in writing to the change, such change shall become effective without action on the part of the buyer; provided that in no event shall any such change take effect with respect to (i) that portion of the outstanding indebtedness from month to month which represents indebtedness outstanding prior to January 1, 1981, and (ii) that portion of the outstanding indebtedness from month to month which represents indebtedness incurred, under or pursuant to an agreement in effect on December 1, 1980, between January 1, 1981, and the effective date of such change specified in the first notice mailed or delivered pursuant to clause (a). Indebtedness outstanding prior to January 1, 1981 for purpose of clause (i) above and indebtedness outstanding prior to the effective date of a change for purposes of clause (ii) above shall be determined on the basis of crediting payments and other credits first to that portion of any such indebtedness representing any service charges and then to that portion of such indebtedness representing purchases and other debits in the order in which made. An amendment to a credit agreement deleting a provision that the rate of service charge may vary from time to time may not become effective within one year from the later of the effective date of the credit agreement or the effective date of an amendment to the credit agreement adding a variable rate provision. For purposes of this paragraph, an adjustment in the rate of the service charge as a consequence of the movement in the selected index shall not constitute a change in the terms of that agreement. A reduction in the grace period for the assessment of a fee on any installment not paid when due, shall be considered an amendment to an agreement as set forth in this paragraph. The provisions of this paragraph shall not apply in the case of an agreement which expressly prohibits changing of terms or which provides limitations on changing of terms which are more restrictive than the requirements of this paragraph.
Any service charge, whether assessed by a fixed or variable rate, may be reduced on such terms as the seller may determine, provided that the terms of such reduction, including, if applicable, the date on which the reduction will terminate, are disclosed to the buyer on the written notice announcing the reduction, prior to the effective date of the reduction. A new method of determining a service charge is a reduction in the service charge if the charge determined under the new method never exceeds the charge under the original method. The original service charge or original method of determining the service charge may be applied after the reduction ends to the entire outstanding indebtedness, including any indebtedness incurred when the reduced service charge applied, and disclosure of the same shall be provided to the buyer in the written notice announcing the reduction. A reduction to a service charge, including the resumption of the original service charge or the original method of determining the service charge, shall not be considered a change in terms for purposes of this paragraph.