Tennessee Code Title 18. Clerks of Courts § 18-6-105

(5)(A) Collect franchise fees pursuant to franchise agreements with municipalities, if so authorized by resolution of the legislative body of any municipality having a metropolitan form of government and a population of over four hundred fifty thousand (450,000), according to the 1990 federal census or any subsequent federal census;

(B) Collect the enrollment fees and provide decals in connection with municipal programs to combat auto theft, if so authorized by ordinance of the legislative body of any municipality having a metropolitan form of government and a population of over four hundred fifty thousand (450,000), according to the 1990 federal census or any subsequent federal census; and

(C) Any powers concerning fee or tax collection that may be granted to the county clerk by the legislative body of any municipality having a metropolitan form of government and a population of more than four hundred fifty thousand (450,000), according to the 1990 federal census or any subsequent federal census, shall not affect the powers granted to the director of finance under the charter of the municipality to make decisions concerning the official depository for fees and taxes as well as depository procedures. The county clerk shall not receive a commission for receiving and paying over the fees and taxes.