Tennessee Code Title 45. Banks and Financial Institutions § 45-3-404

Every association shall close its books on the last business day of its fiscal year, and at other times that its charter or bylaws provide, or as the commissioner requires, for the purpose of determining the gross income of the association for its fiscal year or for the period since the date of the last closing of its books, and from which shall be deducted the expenses of operating the association for that period, the balance remaining being the net income for the period.