Tennessee Code Title 45. Banks and Financial Institutions § 45-2-207

(a) A state bank shall have the capital structure that the commissioner deems adequate. The capital structure of an interim bank chartered pursuant to § 45-2-204(d) shall consist of amounts as determined by the commissioner and prescribed by rule or regulation.

(b) The commissioner may require the bank to increase its capital structure to the point deemed adequate by the commissioner before granting approval of an application for a branch office, amendment to charter, change of location or trust powers.

(c) The issuance of preferred or convertible preferred stock shall be authorized by the commissioner. The stock shall have the preferences, powers and rights the commissioner may approve. It shall not be retired without the approval of the commissioner, and the requirement of the approval shall be stated in the stock certificates, but the commissioner may give advance approval to sinking funds payable exclusively out of earnings available for dividends.

(d) The commissioner may direct a state bank to sell additional stock in a designated amount to remedy an impairment of capital.

(e) The commissioner may consider the value of outstanding debentures as capital for the purpose of determining the legal lending limits of the bank.