(a) General rule.--Pursuant to this section and the provisions of a closed-end credit agreement or an open-end credit agreement, a seller and holder may charge, receive and collect a finance charge.
(b) Closed-end credit agreement.--A finance charge under a closed-end credit agreement shall be:
(1) measured for a period between the date of the agreement and the due date of the last installment; and
(2) calculated for the period according to the actuarial method or the United States Rule method, at a rate agreed to by the buyer and the seller or holder.
(c) Open-end credit agreement.--
(1) Except as provided in paragraph (2), a finance charge on an open-end credit agreement:
(i) shall be computed based on the outstanding monthly balances; and
(ii) may not exceed the rate agreed to by the buyer and the seller or holder.
(2) A minimum finance charge of $1 per month may be made for each month, if the finance charge so computed is less than that amount.
Cross References. Section 6345 is referred to in sections 6327, 6352, 6353 of this title.