Before entering into office, the register must take and subscribe to the constitutional oath and the oath of office known as the fidelity oath as well as give bond as required. Oaths of office are covered under the General Information tab of the County Offices topic. The deputy's oath of office is the same as that of the register; it must be certified, filed, and endorsed in the same manner. T.C.A. § 8-18-112.

The register enters into a four-year term of office only after taking the prescribed oath and posting the required bond. T.C.A. §§ 8-13-101, 8-13-102. Bonds are covered unter the General Information tab of the County Offices topic.