Texas Tax Code - TAX § 112.151. Suit for Refund

(a) A person may sue the comptroller to recover an amount of tax, penalty, or interest that has been the subject of a tax refund claim if the person :

(b) The suit must be brought against both the comptroller and the attorney general and must be filed in a district court.

(c) A person who satisfies the requirement of Subsection (a)(2)(A) must file the suit before the expiration of 60 days after the issue date of the denial of the motion for rehearing or it is barred. A person who satisfies the requirement of Subsection (a)(2)(B) must file the suit during the time provided by Section 111.106(b) or it is barred.

(d) The amount of the refund sought must be set out in the original petition. A copy of the motion for rehearing filed under Section 111.105 or the notice of intent filed under Section 111.106(a), as applicable, must be attached to the original petition filed with the court and to the copies of the original petition served on the comptroller and the attorney general.

(e) A person may not intervene in the suit.

(f) A taxpayer shall produce contemporaneous records and supporting documentation appropriate to the tax or fee for the transactions in question to substantiate and enable verification of a taxpayer's claim relating to the amount of the tax, penalty, or interest that has been assessed or collected or will be refunded, as required by Section 111.0041.