Tex. Fin. Code § 339.003
A seller or lessor may sell an open-end account credit agreement described by Section 339.002(a) or any balance under that agreement to a purchaser who purchases a substantial part of the seller's or lessor's open-end account credit agreements or balances under those agreements in accordance with Subchapter G, Chapter 345. A charge, fee, or discount on that sale:
Amended by Acts 1999, 76th Leg., ch. 62, Sec. 7.18(a), eff. Sept. 1, 1999.