28-5859. Refunds A. If the director determines that a motor carrier fee, penalty or interest has been overpaid, the director shall: 1. State that fact in the director's records. 2. Either credit the excess on any amount then due from the motor carrier or make a refund to the motor carrier or the motor carrier's successors, administrators, executors or assignees. B. The director shall not allow a credit or refund after three years from the date of overpayment unless the motor carrier files with the director a written claim for credit or refund within the three years. C. The motor carrier shall state the specified grounds on which a claim is based. D. The director may pay the refund from any motor carrier fee receipts in the possession of the director before disposition of the receipts.
Arizona Legal Code