Tex. Bus. & Com. Code § 51.008
The secretary of state may charge a reasonable fee to cover the costs incurred as a result of a filing required by Subchapter B or Section 51.003 or 51.251.
Acts 2007, 80th Leg., R.S., Ch. 885 (H.B. 2278), Sec. 2.01, eff. April 1, 2009.