Tenn. Code Ann. § 6-56-212: Intragovernmental service funds

(a) If a local government or public authority establishes and operates one (1) or more intragovernmental service funds, it need not include such a fund in its budget ordinance. However, at the same time it adopts the budget ordinance, the governing body shall approve a balanced financial plan for each intragovernmental service fund. A financial plan is balanced when estimated expenditures do not exceed estimated funds available.

(b) The budget officer shall include in the budget such officer submits to the governing body a proposed financial plan for each intragovernmental service fund to be operated during the budget year by the local government or public authority. The proposed financial plan shall be in such form and detail as prescribed by the budget officer or governing body.

(c) The approved financial plan shall be entered in the minutes of the governing body, as shall each amendment to the plan approved by the governing body.

(d) Any changes in a financial plan must be approved by the governing body.