Form 637, Application for Registration (For Certain Excise Tax Activities)
Use this form to apply for excise tax registration for activities under sections 4101, 4222, and 4682.
Other Items You May Find Useful:
Form 720-CS, Carrier Summary Report
Form 720-TO, Terminal Operator Report
Comment on Form 637
Use the Comment on Tax Forms and Publications web form to provide feedback on the content of this product. Although we cannot respond individually to each comment, we do appreciate your feedback and will consider all comments submitted.
CAUTION: We cannot respond to tax-related questions submitted using this page. Instead, please see our Tax Law Questions page.