Tex. Tax Code § 152.021
Acts 1981, 67th Leg., p. 1588, ch. 389, Sec. 1, eff. Jan. 1, 1982.
Amended by Acts 1984, 68th Leg., 2nd C.S., ch. 31, art. 1, Sec. 6, eff. Aug. 1, 1984;
Acts 1987, 70th Leg., 2nd C.S., ch. 5, art. 6, Sec. 1;
Acts 1991, 72nd Leg., 1st C.S., ch. 5, Sec. 16.02, eff. Sept. 1, 1991;
Acts 1993, 73rd Leg., ch. 29, Sec. 2, eff. Oct. 1, 1993;
Acts 1995, 74th Leg., ch. 1015, Sec. 2, eff. Jan. 1, 1996.