Tex. Ins. Code § 258.004
(b) The amount of maintenance tax assessed may not be computed based on enrollees who as individual certificate holders or their dependents are covered by a master group policy paid for by revenues received from this state or the United States for insurance contracted for by this state or the United States:
Added by Acts 2003, 78th Leg., ch. 1274, Sec. 1, eff. April 1, 2005.