Tenn. Code Ann. § 6-52-301: Requisites for forfeiture

(a) If any municipal corporation with a population of one hundred (100) inhabitants or fewer according to the latest federal census fails to exercise its corporate powers as described in § 6-52-302 , then it shall, as a municipal corporation, forfeit its charter.

(b) Such forfeiture shall become effective upon the issuance of a court decree to that effect as prescribed in § 6-52-303 .