Ala. Code § 11-92A-18
All properties of an authority, whether real, personal, or mixed, and the income therefrom, all bonds and other securities issued by an authority and the coupons applicable thereto and the income therefrom, and all indentures and other instruments executed as security therefor, all leases and loan agreements made pursuant to the provisions of this chapter and all revenues derived from any such leases or loan agreements, and all deeds and other documents executed by or delivered to an authority shall be exempt from any and all taxation by any public person, including without limitation license and excise taxes imposed in respect of the privilege of engaging in any of the activities in which an authority may engage. An authority shall not be obligated to pay or allow any fees, taxes, or costs to the probate judge in connection with the amendment of its articles or the recording of any document. Further, the gross proceeds of the sale of any property used in the construction and equipment of any project for an authority, regardless of whether such sale is to such authority or any contractor or agent thereof, shall be exempt from the sales tax imposed by Article 1 of Chapter 23 of Title 40 and from all other sales and similar excise taxes now or hereafter levied on or with respect to the gross proceeds of any such sale by any public person; and any property used in the construction and equipment of any project for an authority, regardless of whether such property has been purchased by an authority or any contractor or agent thereof, shall be exempt from the use tax imposed by Article 2 of Chapter 23 of Title 40 and all other use and similar excise taxes now or hereafter levied on or with respect to any such property by any public person.
Ala. Code § 11-92A-18 (1975)