Texas Tax Code - TAX § 31.111. Refunds of Duplicate Payments

(a) The collector of a taxing unit who determines that a person erred in making a payment of taxes because the identical taxes were paid by another person shall refund the amount of the taxes to the person who erred in making the payment.

(b) A refund under Subsection (a) shall be made as soon as practicable after the collector discovers the erroneous payment.  The refund shall be accompanied by a description of the property subject to the taxes sufficient to identify the property.  If the property is assigned an account number, the collector shall include that number.

(c) Each month, the collector shall inform the auditor of each appropriate taxing unit of refunds of taxes made under Subsection (a) during the preceding month.