(a) Chapter 321, Tax Code, governs the imposition, computation, administration, collection, and remittance of the sales and use tax, except as inconsistent with this chapter. An authorizing municipality may not adopt a rate under this chapter that, when added to the rates of all other sales and use taxes imposed by the authorizing municipality and other political subdivisions of this state having territory in the authorizing municipality, would result in a combined rate exceeding two percent at any location in the municipality.
(b) Except as provided by this subsection, the tax imposed under this chapter takes effect as provided by § 321.102(a), Tax Code. If an election is held under this chapter at the same time an election is held to impose or change the rate of the additional municipal sales and use tax, the tax under this chapter and the imposition or change in rate of the additional municipal sales and use tax take effect as provided by § 321.102(b), Tax Code.

(c) After the effective date of the taxes imposed under this chapter, the adoption of a sales and use tax or the attempted adoption of a sales and use tax by the authorizing municipality or another taxing jurisdiction having territory in the municipality does not impair the taxes imposed under this chapter.