Delaware Code
Chapter 7. FEES AND TAXES
§ 711. Refund of overpayments.

(a) Any person from whom fees, charges or taxes imposed by this title have been erroneously collected may apply to the Commissioner for refund at any time within 1 year from the date such fees, charges or taxes were originally required to be paid or within 30 days from the date of payment of any additional tax, charge or fee.
(b) If the amount of taxes, charges or fees found due are less than the amount paid, either by examination of the return by the Commissioner or by allowance of a claim for overpayment filed by the payer with the Commissioner, the State Treasurer shall refund the excess out of the General Fund of this State upon certification and approval by the Commissioner.
(c) No such refund shall be made unless the amount to be so refunded is $10 or more.