Section 26.1-20.1-07 - Maximum finance charge1. No insurance premium finance company may charge, contract for, receive, or collect a finance charge plus a flat service fee with respect to a premium finance agreement other than as permitted by this section.2. The finance charge must be computed on the premiums due after subtracting the downpayment made by the insured in accordance with the premium finance agreement, from the effective date of the insurance coverage for which the premiums are being advanced, to and including the date when the final installment under the premium finance agreement is payable.3. The annual percentage rate charged under a premium finance agreement made to finance an insurance policy for agricultural, personal, family, or household use may not exceed the annual percentage rate permitted under section 47-14-09. In addition, an insurance premium finance company may contract for a flat rate service or application fee not exceeding the greater of one percent of the amount financed or twenty dollars per premium finance agreement for expenses incurred in servicing the loan. The finance rate and flat rate service or application fee charged under a premium finance agreement made to finance an insurance policy for business, corporate, or other purposes may be agreed to by the parties to the agreement.4. The finance charge must be computed in advance on the principal balance of a premium finance agreement according to the actuarial method on terms payable in substantially equal successive monthly installments.5. Notwithstanding the provisions of any premium finance agreement, any insured may prepay the obligation in full at any time. If the insured prepays the obligation, the insured must receive a refund credit if the amount of the refund is one dollar or more. The amount of the refund credit must represent at least as great a proportion of the finance charge as the sum of the periodic balances after the month in which prepayment is made bears to the sum of all periodic balances under the schedule of installments in the agreement. If, in addition to the finance charge, an additional flat service fee was imposed, the flat service fee need not be refunded nor taken into consideration in computing the refund credit.