Tex. Fam. Code § 231.206
A district clerk, a county child support registry or enforcement office, or a domestic relations office may not assess or collect fees for processing child support payments or for child support services from the Title IV-D agency, a managing conservator, or a possessory conservator in a Title IV-D case, except as provided by this subchapter.
Added by Acts 1995, 74th Leg., ch. 20, Sec. 1, eff. April 20, 1995.