If, upon written application by taxpayer to the County Treasurer for a refund, it appears that tax has been paid in excess of the amount actually due or upon a sale or other transfer declared to be exempt, such excess amount or improper payment shall be refunded by the County Treasurer to the taxpayer; provided, that no refund shall be made unless the state has first authorized the refund of an excessive amount or an improper amount paid, unless such improper amount was paid as a result of miscalculation. Any refund made shall be withheld from the next monthly distribution to the City. [Ord. 102 § 1, 1996.]