IRS Form 637 – Excise Tax Registration (Fillable PDF)

Looking for a fast, secure way to complete Form DSMV 637 (also known as IRS Form 637)? You’ve come to the right place. This page offers a fully fillable PDF that loads directly in the Formize PDF Filler—no extra software required.

What Is IRS Form 637?

Form 637 is the Internal Revenue Service’s excise tax registration form. It is used by businesses and individuals who need to register for excise taxes under sections 4101, 4222, 4662, and 4682 of the Internal Revenue Code. The form collects essential information such as the taxpayer’s name, address, type of activity, and the specific excise tax category.

How to Complete the Fillable PDF Form

Follow these simple steps to fill out the form online:

1. Click the "Fill out this form" button below.
2. Wait a few seconds while the Formize PDF Filler loads the document.
3. Enter your information directly into the highlighted fields. The filler validates dates, numbers, and required fields for you.
4. Review the completed form for accuracy.
5. Save a copy to your device or email it directly to the IRS using the built‑in “Send” button.

Common Mistakes to Avoid

• Leaving required fields blank: The filler will highlight missing information, but double‑check before submission.
• Incorrect tax activity code: Use the Activity Letter chart on the form to match your business activity.
• Mismatched EIN or SSN: Verify that the identification number matches your IRS records.
• Illegible signatures: Use the digital signature tool in Formize for a clear, legally acceptable signature.

Where to Submit the Completed Form

After you finish, you can either:

• Mail the printed form to the address listed in the instructions, or
• Submit electronically through the IRS e‑services portal if you have an authorized e‑file account.

Download the Official PDF

If you prefer the static version, you can download the official IRS PDF below. The fillable version on this page is based on the same document and is kept up‑to‑date with the latest IRS revisions.

Download IRS Form 637 (PDF)