Section 13-01-14 - Late payment charge on accounts receivable - Exceptions1. A creditor may charge, receive, and collect a late payment charge on all money due on account from thirty days after the obligation of the debtor to pay has been incurred. A creditor may assign an account receivable that is subject to this section. An assignee of an account receivable has the same right to charge a late payment charge as does an original creditor for the assigned account receivable.2. The late payment charge allowed under this section may not exceed one and three-fourths percent per month.3. The late payment charge allowed under this section may not be charged unless, when the obligation was incurred, the creditor did not intend to extend any credit beyond thirty days and any late payment of the obligation was unanticipated.4. This section does not apply to: a. Money due on retail installment contracts, as defined in chapter 51-13.b. Money due on revolving charge accounts, as defined in chapter 51-14.c. Money due a medical services provider on accounts receivable for medical bills.