Credit unions shall not be subject to any tax except the ad valorem tax upon property imposed by the Constitution of this state unless made subject thereto by express provision of the law specifically naming credit unions and making them subject thereto. All ad valorem taxes against credit unions shall be assessed upon the value of their shares, including surplus and undivided profits, and not upon their assets, other than real estate; and the rate of taxation shall not exceed the rate of taxation imposed on banking corporations, provided that, so long as federal credit unions are exempt from the payment of the tax imposed under this Code section, state credit unions shall likewise be exempt.
OCGA § 7-1-662