N.J. Stat. § 17:3B-17
Notwithstanding the provisions of R.S. 31:1-1, a lender extending closed end credit may, subject to the criminal usury provisions of N.J.S. 2C:21-19, charge and collect interest with respect to a note or loan at daily, weekly, monthly, annual or other periodic percentage rates established in accordance with the terms of the loan agreement, except that the interest shall be calculated on a simple interest basis. In no instance shall the precomputed interest method be used. Nothing in this section shall be construed to authorize the charging of interest on any accrued interest remaining unpaid on the account.
For purposes of this section, a year may be, but need not be, a calendar year and shall be a period of 365 days. "Precomputed interest" means an amount equal to the whole amount of interest payable on a loan for the period from the making of the loan to the date scheduled by the terms of the loan for the repayment of the loan in full.
N.J.S. § 17:3B-17