Ala. Code § 40-22-10: Tax Upon Recording Transfer of Instrument Recorded by Exempt Institution - Exemption of Debt Secured by Instrument Upon Which Recording Tax Has Previously Been Paid.

If any transfer of any such mortgage, deed of trust, contract of conditional sale, or other instrument of like character described in Section 40-22-6 has heretofore been filed for record in any probate office of this state and the recording privilege tax imposed by Section 40-22-1 or Section 40-22-2 has been paid thereon, the debt secured by the instrument so transferred shall be exempt from any ad valorem tax, either state, county, or municipal.