Ala. Code § 40-20-32 — Tax to Be a Lien; Amount of Tax

Such tax shall be a lien upon the interest leased, assigned, conveyed, reserved, excepted or transferred, and the amount to be paid shall be determined as follows; provided, that the minimum tax shall be $1:
(1) Upon the filing and recording of each instrument creating, assigning or transferring a leasehold, or interest therein or any portion thereof, or conveying, transferring, excepting or reserving a mineral or royalty interest as above described, the primary term of which shall expire 10 years or less from the date of execution of the instrument, the tax shall be a sum equal to $.05 per mineral or royalty acre conveyed, leased, assigned, excepted, reserved or transferred therein.
(2) Such tax shall be $.10 per mineral or royalty acre if the primary term of such interest shall expire more than 10 years and not exceeding 20 years from the date of the execution of such instrument.
(3) Such tax shall be $.15 per mineral or royalty acre if the primary term of such interest may or shall extend more than 20 years from the date of the execution of such instrument.