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ITIN Application Guide

How to Apply for an ITIN from Outside the U.S.

8 min read
November 12, 2025
BeFiling Experts

If you’re a non-U.S. resident who needs to file a U.S. tax return or fulfill other IRS requirements, you’ll need an Individual Taxpayer Identification Number (ITIN). The good news? You can apply for an ITIN even if you live outside the United States.

What Is an ITIN?

An ITIN (Individual Taxpayer Identification Number) is a tax processing number issued by the Internal Revenue Service (IRS) for individuals who are not eligible for a Social Security Number (SSN). It helps non-U.S. residents and foreign nationals comply with U.S. tax laws.

Who Needs an ITIN?

  • Not eligible for a Social Security Number (SSN)
  • Need to file a U.S. tax return (Form 1040)
  • Dependent or spouse of a U.S. citizen/resident
  • Nonresident alien claiming tax treaty benefits
  • Own or invest in U.S. property or business

Application Process

1

Complete Form W-7

Download and fill out Form W-7 from the IRS website. Ensure all information matches your passport exactly.

2

Prepare Documents

Submit proof of identity (passport preferred) or two alternative documents. All documents must be valid.

3

Attach Tax Return

Most applicants must attach their U.S. federal tax return. Exceptions apply for treaty benefits.

Submit Your Application

Mail to IRS

Traditional method of mailing documents directly to IRS processing center.

  • Send to IRS ITIN Operation
  • Original documents required
  • Longer processing time
  • International shipping risk

In-Person

Apply at IRS Taxpayer Assistance Center during U.S. visit.

  • Immediate verification
  • No mailing required
  • Requires U.S. travel
  • Appointment needed

Processing Time

Typically takes 8–10 weeks. May be longer during busy tax seasons or for international applications.

Contact Our Experts

Get professional assistance with your ITIN application

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+1 (406) 607-2216

Phone

+1 (406) 607-2216

Address

2261 Market Street STE 85762
San Francisco, CA 94114

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