Ala. Code § 32-6-58: Applicants for Registration Must Furnish Proof of Paying Certain Federal Taxes.

(a) All judges of probate, license commissioners, and other officials authorized by law to register motor vehicles and issue motor vehicle license plates and to perform other duties in connection with the issuance of motor vehicle license plates shall refuse to issue motor vehicle registrations and license plates and shall refuse to transfer or renew motor vehicle registrations and license plates unless the applicant furnishes proof of payment, in the form prescribed by the Secretary of the United States Treasury, that any federal heavy vehicle excise tax imposed by Title 26, United States Code §4481, has been paid.

(b) The Department of Revenue may adopt rules and regulations necessary for the proper administration of this section.