Ala. Code § 11-89A-16
The property and income of any authority, all bonds issued by an authority, the income from such bonds, conveyances by or to an authority, and leases, mortgages, and deeds of trust or trust indentures by or to an authority shall be exempt from all taxation in the State of Alabama. Any authority shall be exempt from all taxes levied by any county, municipality, or other political subdivision of the state, including, but without limitation to, 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 judge of probate of any county in respect of its incorporation, the amendment of its certificate of incorporation, or the recording of any document.
Ala. Code § 11-89A-16 (1975)