Form 637, Application for Registration (For Certain Excise Tax Activities)
This form is used to apply for excise tax registration for activities under sections 4101, 4222, and 4682.
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Comment on Form 637
Send us an email or use the Comment on Tax Forms and Publications web submission form to provide us feedback on the content of the products we give you to help you comply with tax law.
Caution: If you have a tax-related question, please go to Help With Tax Questions or call our toll-free number at 1-800-829-1040 (Individuals) or 1-800-829-4933 (Business). We cannot respond to tax-related questions submitted from this page.
Although we cannot respond individually to each email, we do appreciate your feedback and will consider your comments as we revise our tax products.
Page Last Reviewed or Updated: 2012-12-17
