Tex. Alcoholic Beverage Code § 201.71: STAMPS.

Unless the liquor is exempt from tax or payment has been or is to be made by a permittee in accordance with the provisions of Subchapter A or B of this chapter, the tax levied under Subchapter A or B shall be paid by affixing a stamp or stamps on each bottle or container of liquor. The stamp shall be affixed in strict accordance with the commission's rules and regulations.

Acts 1977, 65th Leg., p. 533, ch. 194, Sec. 1, eff. Sept. 1, 1977. Amended by Acts 2001, 77th Leg., ch. 191, Sec. 3, eff. Sept. 1, 2001.