Ala. Code § 41-10-553

The income and property of the authority, all authority obligations and the interest paid on any such authority obligations, all conveyances by or to the authority, and all instruments by or to the authority shall be exempt from all taxation in the state. The authority shall also be exempt from all license and excise taxes imposed in respect of the privilege of engaging in any of the activities in which the authority may engage. The authority shall not be obligated to pay or allow any fees, taxes, or costs in the recording of any document to the judge of probate of any county.