Section 11-99A-20 - Exemption from taxation(a) Each district, and the bonds and interest and income on the bonds of the district, shall be exempt from all taxation by the state or any other public person and all of its property, purchases, sales, and usage, and the recordation of its mortgages, indentures, deeds, or other instruments to which the district is a party or which reflect the securing of any bonds of the district shall be exempt from all taxation and recording fees. The income of a district shall be exempt from all taxation.(b) The purchase, acquisition, and installation of materials for improvements by a district shall be exempt from all sales and use taxes, gross receipts taxes in the nature of a sales or use tax, or taxes measured by the amount of the purchase, whether levied on the vendor, contractor, subcontractor, or the district. The Department of Revenue shall issue regulations to provide a simple procedure to allow contractors and subcontractors to make purchases of materials for use in acquiring, constructing, or installing improvements for a district free of sales and use taxes or gross receipts taxes in the nature of a sales tax. Nothing in this chapter shall allow the exemption of sales or use taxes on purchases, acquisitions, or installations that would not be exempt if purchased, acquired, or installed directly by the appointing government.(c) Notwithstanding the foregoing, the appointing government may at or prior to making a preliminary assessment: (1) Require the payment of fees in lieu of taxes or (2) Limit or restrict or rescind one or more of the tax exemptions provided in this section.Ala. Code § 11-99A-20 (1975)