N.J. Stat. Ann. § 17:3B-9

Purchases and loans--differing terms. A lender may, if the agreement governing a revolving credit plan so provides, impose different terms, including, without limitation, the terms governing the periodic percentage rate or rates used to calculate interest, the method of computing the outstanding unpaid indebtedness to which the rates are applied, and the terms of the installment repayment schedule, with respect to indebtedness arising out of purchases or loans made under the plan.