Tex. Transp. Code § 522.051

Current with legislation from the 2023 Regular and Special Sessions signed by the Governor as of November 21, 2023.
Section 522.051 - Expiration of License or Permit
(a) Except as provided by Subsections (f) and (i) and Sections 522.013(e), 522.033, and 522.054, an original commercial driver's license expires eight years after the applicant's next birthday.
(b) Except as provided by Subsection (j) and Section 522.054, a commercial driver's license issued to a person holding a Texas Class A, B, C, or M license that would expire one year or more after the date of issuance of the commercial driver's license expires eight years after the applicant's next birthday.
(c) Except as provided by Subsection (k) and Section 522.054, a commercial driver's license issued to a person holding a Texas Class A, B, C, or M license that would expire less than one year after the date of issuance of the commercial driver's license or that has been expired for less than one year expires eight years after the expiration date shown on the Class A, B, C, or M license.
(d) Except as provided by Subsection (l) and Section 522.054, a commercial driver's license issued to a person holding a Texas Class A, B, C, or M license that has been expired for at least one year but not more than two years expires eight years after the applicant's last birthday.
(e) For purposes of this section, a person's "last birthday" is the birthday that occurs on or before the date of issuance, and a person's "next birthday" is the birthday that occurs on or after the date of issuance.
(f) Except as provided by Section 522.013, a non-domiciled commercial driver's license other than a temporary non-domiciled commercial driver's license under Section 522.013(e) expires on:
(1) the earlier of:
(A) the first birthday of the license holder occurring after the eighth anniversary of the date of the application; or
(B) the expiration date of the license holder's lawful presence in the United States as determined by the appropriate United States agency in compliance with federal law; or
(2) the first anniversary of the date of issuance, if there is no definitive expiration date for the applicant's authorized stay in the United States.
(g) A commercial driver's license issued to a person whose residence or domicile is a correctional facility or a parole facility expires on the first birthday of the license holder occurring after the first anniversary of the date of issuance. The department by rule shall establish the fee for a commercial driver's license issued to a person whose residence or domicile is a correctional facility or a parole facility.
(h) A commercial learner's permit expires on the earlier of:
(1) the expiration date of the driver's license or commercial driver's license; or
(2) the 181st day after the date of issuance.
(i) Except as provided by Subsection (f) and Sections 522.013(e), 522.033, and 522.054, an original commercial driver's license with a hazardous materials endorsement expires five years after the applicant's next birthday.
(j) Except as provided by Section 522.054, a commercial driver's license with a hazardous materials endorsement issued to a person holding a Texas Class A, B, C, or M license that would expire one year or more after the date of issuance of the commercial driver's license expires five years after the applicant's next birthday.
(k) Except as provided by Section 522.054, a commercial driver's license with a hazardous materials endorsement issued to a person holding a Texas Class A, B, C, or M license that would expire less than one year after the date of issuance of the commercial driver's license or that has been expired for less than one year expires five years after the expiration date shown on the Class A, B, C, or M license.
(l) Except as provided by Section 522.054, a commercial driver's license with a hazardous materials endorsement issued to a person holding a Texas Class A, B, C, or M license that has been expired for at least one year but not more than two years expires five years after the applicant's last birthday.

Tex. Transp. Code § 522.051

Acts 2019, 86th Leg., R.S., Ch. 595 (S.B. 616), Sec. 7.005, eff. September 1, 2019
Acts 2015, 84th Leg., R.S., Ch. 752 (H.B. 1888), Sec. 22, eff. January 1, 2016
Acts 2009, 81st Leg., R.S., Ch. 1288 (H.B. 2161), Sec. 7, eff. September 1, 2009
Acts 2009, 81st Leg., R.S., Ch. 87 (S.B. 1969), Sec. 23.006, eff. September 1, 2009
Acts 2007, 80th Leg., R.S., Ch. 1319 (S.B. 1260), Sec. 4, eff. September 1, 2007
Acts 2007, 80th Leg., R.S., Ch. 37 (H.B. 84), Sec. 7, eff. September 1, 2007
Amended by: Acts 2005, 79th Leg., Ch. 358 (S.B. 1258), Sec. 2, eff. September 1, 2005
Acts 2001, 77th Leg., ch. 546, Sec. 11, eff. Sept. 1, 2001
Amended by Acts 1997, 75th Leg., ch. 1372, Sec. 6, eff. Sept. 1, 1997
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.
See Acts 2019, Texas Acts of the 86th Leg.- Regular Session, ch. 595, Sec. 7.008.