Ala. Code § 40-17-340 — Filing of Monthly Return and Payment Due

(a) Each supplier, importer, blender, permissive supplier, and exporter shall file the monthly return required herein, in a format prescribed by the commissioner, on or before the 22nd day of each calendar month for the preceding month.
(b) Other than importers, the tax levied by this article shall be paid to the department by each taxpayer on or before the 22nd day of each calendar month for the preceding month and shall be accompanied by any required returns. The department may require all or certain taxpayers to file tax returns and payments electronically.
(c) Importers importing motor fuel from a bulk plant or some other non-terminal storage location shall pay the tax levied by this article to the department on or before the 22nd day of each calendar month for the preceding month, and the payment shall be accompanied by any required returns. The department may require all or certain taxpayers to file tax returns and payments electronically.
(d) Importers importing motor fuel acquired at an out-of-state terminal from a supplier who has not precollected the tax imposed under Section 40-17-325 at the time of such removal shall pay the tax so levied to the department on or before the 3rd business day following the day of importation, and the payment shall be accompanied by any required returns.
(e) A supplier or permissive supplier who timely files a return with the payment due may deduct from the amount of tax payable with the return an administrative discount of one half of one percent (.005) of the amount of tax payable to the state.