(a) The Covington County Commission is authorized to levy and impose a one percent sales or gross receipts tax upon the sales of all tangible personal property sold in Covington County, Alabama.
(b) There are exempted, however, from this section and from the computation of the amount of the tax imposed in this section, the gross receipts of any business and the gross proceeds of all sales which are presently exempted under the state sales tax statutes from the computation of the amount of the state sales tax.