(a) A United States governmental entity described in § 156.103(a) is exempt from the payment of tax authorized by this chapter.
(b) A state governmental entity subject to the tax imposed by Chapter 156 under § 156.103(b) shall pay the tax imposed by this chapter but is entitled to a refund of the tax paid.

(c) A person who is described by § 156.103(d) is exempt from the payment of the tax authorized by this chapter.
(d) A person who is described by § 156.103(c) shall pay the tax imposed by this chapter but the state governmental entity with whom the person is associated is entitled to a refund of the tax paid.
(e) To receive a refund of a tax paid under this chapter, the governmental entity entitled to the refund must file a refund claim on a form provided by the county and containing the information required by the county. The comptroller by rule shall prescribe the form that must be used and the information that must be provided.
(f) A governmental entity may file a refund claim with the county under this chapter only for each calendar quarter for all reimbursements accrued during that quarter. The county may adopt a resolution to enforce this section.
(g) The right to use or possess a room in a hotel is exempt from taxation under this chapter if the person required to collect the tax receives, in good faith from a guest, an exemption certificate stating qualification for an exemption provided in Subsection (c). The exemption must be supported by the documentation required under rules adopted by the comptroller and the county.