ITIN for Non-Residents: Complete Application Guide 2026

Who Counts as a Non-Resident for ITIN Purposes?

The IRS classifies you as a non-resident alien (NRA) if you are not a US citizen and do not meet the green card test or the substantial presence test. The substantial presence test counts the number of days you have been physically present in the US over a three-year period. If you do not meet either threshold, you are considered a non-resident alien for tax purposes.

Common examples of non-residents who need ITINs include:

• Foreign nationals who own US rental property
• International freelancers and contractors working for US clients
• Online sellers on US platforms like Amazon, eBay, and Etsy
• Foreign investors receiving dividends or interest from US sources
• Non-resident spouses filing joint returns with US citizen spouses
• Foreign students or scholars with certain types of US income

If your situation does not fit neatly into these categories, the general rule is simple: if the IRS expects you to file a US tax return or if a US entity needs your taxpayer ID for reporting, you need an ITIN.

Types of US Income That Require an ITIN for Non-Residents

Not all income triggers a US tax obligation. The IRS taxes non-residents only on income that is effectively connected with a US trade or business, or that is fixed, determinable, annual, or periodic (FDAP) income from US sources. Here are the most common categories:

Effectively Connected Income (ECI)

This includes income from a trade or business you conduct in the US. Examples: selling products through a US-based marketplace, providing services to US clients, or operating a US business. ECI is taxed at graduated rates (the same rates US residents pay), and you can deduct business expenses against it. This is the most common income type for Amazon sellers and freelancers with ITINs.

FDAP Income

Fixed, determinable, annual, or periodic income includes dividends, interest, rents, royalties, and certain other passive income from US sources. This income is typically taxed at a flat 30% rate (or a reduced rate under an applicable tax treaty). The withholding agent (bank, broker, or tenant) collects the tax before paying you.

Real Property Income

If you own US real estate and earn rental income, you need an ITIN to file a US tax return reporting that income. You can elect to treat rental income as ECI, which allows you to deduct expenses like mortgage interest, property taxes, and maintenance costs against the income. Without this election, the gross rental income is subject to 30% withholding.

Tax Obligations for Non-Resident Aliens

As a non-resident alien with US-sourced income, you have several tax obligations:

• File Form 1040-NR annually. This is the US tax return for non-resident aliens. You report all your US-sourced income, claim deductions, apply tax treaty benefits, and calculate your actual tax liability. Any excess withholding can be refunded.
• Submit W-8BEN forms to withholding agents. Any US entity paying you (employer, bank, payment platform, tenant) needs a W-8BEN on file to apply the correct withholding rate. Your ITIN goes on this form.
• Meet filing deadlines. Non-resident aliens must file Form 1040-NR by June 15 (automatic extension from the April 15 deadline) if they have no wages subject to US withholding. You can request an additional extension to October 15 by filing Form 4868.
• Maintain your ITIN. ITINs expire if not used on a US tax return for three consecutive years. File regularly to keep your ITIN active and avoid the hassle of reapplying.

How to Apply for an ITIN from Outside the US

You do not need to visit the US to get an ITIN. The entire application can be completed remotely. Here are your three options:

Option 1: Mail Your Application to the IRS

Complete Form W-7, attach your original passport (or certified copies of identity documents), and include your US federal tax return. Mail everything to the IRS ITIN Operation Center in Austin, Texas. The IRS returns your documents within 60 days of receiving your application. Processing takes 7 to 11 weeks.

Option 2: Visit a US Embassy or Consulate

Some US embassies and consulates have IRS representatives who can accept ITIN applications in person. This option is limited and not available at all locations. Check the IRS website for participating embassies.

Option 3: Use a Certifying Acceptance Agent

A Certifying Acceptance Agent (CAA) is authorized by the IRS to verify your identity documents and submit your application on your behalf. This is the safest and most convenient option because you never have to mail your original passport. The CAA reviews your documents, certifies copies, and sends the complete application package to the IRS.

Document Requirements for Non-Resident ITIN Applications

The IRS requires you to prove both your identity and your foreign status. A valid passport is the simplest way to satisfy both requirements with a single document. If you do not have a passport, you need two documents from the following IRS-accepted list:

• National identification card (with photo, name, address, date of birth, and expiration date)
• US or foreign driver's license
• Birth certificate (required for dependents under 18)
• Foreign voter registration card
• US visa issued by the Department of State
• US military identification card
• Foreign military identification card
• Civil birth certificate (for dependents under 18)
• Medical records (for dependents under 6)
• School records (for dependents under 14, or under 18 if a student)

All documents must be originals or certified copies from the issuing agency. Notarized copies are not accepted. If you work with a Certifying Acceptance Agent, the CAA can verify your original documents and create certified copies, so you keep your originals at all times.