Tennessee Code Title 7. Consolidated Governments and Local Governmental Functions and Entities § 7-21-403

(a) Any unified government created and established pursuant to this chapter shall be authorized and empowered, through its legislative branch, to levy every tax that a county or municipality is now authorized to levy or may hereafter be authorized to levy.

(b) Any tax created, assessed, or levied prior to unification under this chapter by the county or any municipality shall continue unabated in favor of the unified government subsequent to unification of the county and such unified municipality.

(c) The act of unification shall not affect the assessment, levy or collection of any tax within the county adopting unified government under this chapter, unless and until specific action with respect to the assessment, levy or collection of any tax is taken by the legislative body of the unified government.

(d) When the amount of the authorized tax depends upon the population or area of the entire county, without regard to the exclusion of population or area that is or may have been within the boundaries of municipalities within the county, then the entire population and the total area of the county in which such unified government is established shall be determinative of the authorized levy.

(e) The legislative body may create and establish such taxing districts, as in its judgment, are necessary and appropriate to fairly allocate such taxes.