What is Form W-7?
Form W-7 applies for an ITIN — a taxpayer ID for people who must file U.S. taxes but aren't eligible for a Social Security number.
W-7 requests an ITIN for people who must file U.S. taxes but can't get a Social Security number. You submit it together with your tax return and documents proving identity and foreign status — often through an IRS-authorized Certifying Acceptance Agent so you don't have to mail original passports.
Who files it
Nonresident and resident aliens, and their dependents, who have a U.S. filing requirement but no SSN.
When it's due
Form W-7 is generally due With your tax return. Deadlines can move for weekends and holidays, so confirm the exact date for the current year on IRS.gov.
Key lines and parts
Here's what you'll actually fill in on Form W-7:
- Reason for applying
- Name, mailing and foreign address
- Birth information and country of citizenship
- Supporting identity documents
How to file
Submit Form W-7 with your tax return and proof of identity and foreign status, through an IRS acceptance agent or at an IRS center.