Alabama Code Title 45. Local Laws § 45-1-243.02

(1) An excise tax is hereby authorized to be levied and imposed on the storage, use, or other consumption in the county of tangible personal property (not including, however, materials and supplies bought for use in fulfilling a contract for the painting, repairing, or reconditioning of vessels, barges, ships, and other watercraft of more than 50 tons burden) purchased at retail on or after the effective date of such tax, for the storage, use, or other consumption in the county on or after the effective date of such tax, at the rate of not exceeding one percent of the sale price of such property, except as provided in subdivisions (2), (3), (4), and (5);

(2) An excise tax is hereby authorized to be levied and imposed on the storage, use, or other consumption in the county of any machines used in mining, quarrying, compounding, processing, and manufacturing of tangible personal property purchased at retail on or after the effective date of such tax for storage, use, or other consumption in the county, at the rate of not exceeding one-half of one percent of the sales price of any such machine;  provided, that the term “machine,” as used herein shall include machinery which is used for mining, quarrying, compounding, processing, or manufacturing tangible personal property and the parts of such machines, attachments, and replacements therefor, which are made or manufactured for use on or in the operation of such machines and are customarily so used;

(3) An excise tax is hereby authorized to be levied and imposed on the storage, use, or other consumption in the county of any automotive vehicle, truck, trailer, semi-trailer, or house trailer purchased at retail on or after the effective date of such tax for storage, use, or other consumption in the county at the rate of not exceeding one-half of one percent of the sales price of such automotive vehicle, truck, trailer, semi-trailer, or house trailer;  provided, that where any used automotive vehicle, truck, trailer, semi-trailer, or house trailer is taken in trade, or in a series of trades, as a credit or part payment on the sale of a new or used vehicle, the tax herein authorized to be levied shall be paid on the net difference, that is, the price of the new or used vehicle sold less the credit for the used vehicle taken in trade;  and

(4) An excise tax is hereby levied and imposed on the storage, use, or other consumption in the county of any machine, machinery, or equipment which is used in planting, cultivating, and harvesting farm products, or used in connection with the production of agricultural produce or products, livestock, or poultry on farms, and the parts of such machines, machinery, or equipment and attachments and replacements therefor which are made or manufactured for use on or in the operation of such machine, machinery, or equipment, and which are necessary to and customarily used in the operation of such machine, machinery, or equipment which is purchased at retail after the effective date of this ordinance, for the storage, use, or other consumption in the county at the rate of one-half of one percent of the sales price of such property within the county, regardless of whether the retailer is or is not engaged in the business in this county. Provided, however, the one-half of one percent rate herein prescribed with respect to parts, attachments, and replacements shall not apply to any automotive vehicle or trailer designed primarily for public highway use, except farm trailers used primarily in the production and harvesting of agricultural commodities. Where any used machine, machinery, or equipment which is used in planting, cultivating, and harvesting farm products or used in connection with the production of agricultural produce or products, livestock, and poultry on farms is taken in trade or in a series of trades as a credit or part payment on a sale of a new or used machine, machinery, or equipment, the tax levied herein shall be paid on the net difference, that is, the price of the new or used machine, machinery, or equipment sold, less the credit for the used machine, machinery, or equipment taken in trade;  and

(5) An excise tax is hereby authorized to be levied and imposed on the classes of tangible personal property, and at not exceeding the rate authorized to be imposed on such classes, specified in subdivision (1), (2), (3), or (4), on the storage, use or other consumption in the performance of a contract in the county of any such tangible personal property, new or used, the tax to be measured by the sales price or the fair and reasonable market value of such tangible personal property when put into use in the county, whichever is less;  provided, however, the tax authorized to be imposed by this subdivision shall not apply where the taxes imposed by subdivision (1), (2), (3), or (4) apply.