S.C. Code Ann. § 12-11-20: Tax on income of banks; rate.

A tax is imposed upon every bank engaged in business in the State which shall be levied, collected and paid annually with respect to the entire net income of the taxpayer doing a banking business within this State or from the sales or rentals of property within this State, computed at the rate of four and one half per cent of the entire net income of such bank or taxpayer.