Texas Tax Code - TAX § 325.021. Tax Authorized

(a) A county having a population of 60,000 or less that borders the Rio Grande containing a municipality with a population of more than 22,000 may adopt or abolish the sales and use tax authorized by this chapter at an election held in the county.

(b) A county may not adopt a tax under this chapter if as a result of the adoption of the tax the combined rate of all sales and use taxes imposed by the county and other political subdivisions of this state having territory in the county would exceed two percent at any location in the county.

(c) If the voters of a county approve the adoption of the tax at an election held on the same election date on which another political subdivision adopts a sales and use tax or approves the increase in the rate of its sales and use tax and as a result the combined rate of all sales and use taxes imposed by the county and other political subdivisions of this state having territory in the county would exceed two percent at any location in the county, the election to adopt a sales and use tax under this chapter has no effect.

(d) That portion of the tax collected under this chapter necessary for the operation of the landfill is dedicated solely to that purpose.

(e) That portion of the tax collected under this chapter necessary for debt services for criminal detention center bonds is dedicated solely to that purpose.

(f) Any tax collected under this chapter not dedicated under Subsection (d) or (e) shall be used for ad valorem reduction.

(g) The dedication established under Subsection (d) expires when the landfill is sold or closed.  The dedication established under Subsection (e) expires when the criminal detention center bonds are retired.

(h) If the commissioners court adopts an order finding that the purposes for which the dedications made under Subsections (d) and (e) have been accomplished, the tax authorized by this chapter is abolished.