(a) Overpayments. Payment of amounts due to a State required as the result of a final judgment of the court shall be adjusted under §§404.1271 and 404.1272.

(b) Underpayments. Wage reports and contribution returns required as the result of a final judgment of the court shall be filed under §§404.1237-404.1251. We will assess interest under §404.1265 where, based upon a final judgment of the court, contributions are due from a State because the amount of contributions assessed was not paid by the State or the State had used an allowance of a credit or refund of an overpayment.