Form 637 - Application for Registration (For Certain Excise Tax Activities) and Questionnaires; and IRS Notice 2023-06

Form 637 is used to apply for excise tax registration for activities under sections 4101, 4222, and 4682. This includes, but is not limited to, pipeline operator or vessel operator: Activity Letter, Enterers, position holders, refiners, and terminal operators, Blenders, Producers or importers of alcohol, agri-biodiesel, and biodiesel (including renewable diesel), Producers of second generation biofuel. The information will be used to make an informed decision on whether the applicant/registrant qualifies for registration. Form 637 Questionnaires will be used to collect information about persons who are attempting to register or are registered with the Internal Revenue Service (IRS) in accordance with Internal Revenue Code (IRC) § 4101, 4222, or Notice 2005-04. The information will be used to make an informed decision on whether the applicant/registrant qualifies for registration.

The latest form for Form 637 - Application for Registration (For Certain Excise Tax Activities) and Questionnaires; and IRS Notice 2023-06 expires 2022-03-31 and can be found here.