Tex. Occ. Code § 901.452
A person may not assume or use the title or designation "public accountant" or any other title, designation, word, letter, abbreviation, sign, card, or device tending to indicate that the person is a public accountant, or a firm composed of public accountants, unless:
Acts 1999, 76th Leg., ch. 388, Sec. 1, eff. Sept. 1, 1999.
Amended by Acts 2001, 77th Leg., ch. 1497, Sec. 29, eff. Sept. 1, 2001.