43 Tex. Admin. Code § 217.161
Pursuant to Transportation Code, § 520.0071, a county tax assessor-collector, with the approval of the commissioners court of the county, may appoint deputies to perform designated motor vehicle titling and registration services. This subchapter prescribes the classification types, duties, and obligations of deputies; the type and amount of any bonds that deputies may be required to post; and the fees that deputies may be authorized to charge or retain. A deputy appointed under Transportation Code, § 520.0071, on or before December 31, 2016, may continue to perform services authorized under former Transportation Code, §§ 520.008, 520.009, 520.0091, and 520.0092, as amended by Acts 2011, 82nd Leg., ch. 1296 (H.B. 2357). Beginning January 1, 2017, all deputies must be deputized in accordance with and comply with the provisions of this subchapter.
43 Tex. Admin. Code § 217.161