Tennessee Code Title 5. Counties § 5-1-215

The county legislative body of any county having a charter form of government that has a population in excess of eight hundred thousand (800,000), according to the 1990 federal census or any subsequent federal census, shall adopt a financial policy establishing guidelines and goals in regard to the amount and type of debt issued by or on behalf of such county. Such policy shall be adopted within one (1) year from May 30, 2001.