Tex. Tax Code § 171.151
The franchise tax shall be paid for each of the following:
Acts 1981, 67th Leg., p. 1699, ch. 389, Sec. 1, eff. Jan. 1, 1982.
Amended by Acts 1985, 69th Leg., ch. 31, Sec. 5, eff. Aug. 26, 1985;
Acts 1991, 72nd Leg., 1st C.S., ch. 5, Sec. 8.11, eff. Jan. 1, 1992;
Acts 1995, 74th Leg., ch. 1002, Sec. 14, eff. Jan. 1, 1996.
Acts 2006, 79th Leg., 3rd C.S., Ch. 1 (H.B. 3), Sec. 6, eff. January 1, 2008.