Tex. Tax Code § 171.0003
(a) An entity is a passive entity only if:
(2) during the period on which margin is based, the entity's federal gross income consists of at least 90 percent of the following income:
(b) The income described by Subsection (a)(2) does not include:
(2) income received by a nonoperator from mineral properties under a joint operating agreement if the nonoperator is a member of an affiliated group and another member of that group is the operator under the same joint operating agreement.
Acts 2006, 79th Leg., 3rd C.S., Ch. 1 (H.B. 3), Sec. 2, eff. January 1, 2008.
Acts 2007, 80th Leg., R.S., Ch. 1282 (H.B. 3928), Sec. 3, eff. January 1, 2008.