Ala. Code § 40-22-11
Any corporation, organization, or institution now or hereafter exempt from the recording privilege tax imposed by Section 40-22-2 may, at the time of presenting for record any mortgage, deed of trust, contract of conditional sale or other instrument of like character executed to it, waive its exemption from payment of such recording privilege tax with respect to such instrument and pay the tax imposed by said section at the time such instrument is presented to the judge of probate for filing, and no transfer of the indebtedness thereby secured, thereafter presented for recording, shall be subject to any recording privilege tax, but shall be filed for record by the judge of probate upon the payment of the recording fees to the judge of probate.
Ala. Code § 40-22-11 (1975)