ITIN Tax Return 2026: How to File US Taxes with an ITIN

Who Needs to File an ITIN Tax Return?

5 groups of ITIN holders must file a US tax return:

1. Non-resident aliens with US-source income. If you received wages, rental income, dividends, or royalties from US sources, the IRS requires you to report that income on Form 1040-NR.
2. Foreign nationals with US real estate. Rental income from US properties is taxable. Selling US property triggers capital gains tax. FIRPTA (Foreign Investment in Real Property Tax Act) withholding of 15% applies to most sales.
3. Spouses of US citizens or residents. If you file jointly with a US citizen or resident, you need an ITIN to be included on the joint return. See our guide on ITINs for spouses.
4. Students and scholars on visas. F-1, J-1, and M-1 visa holders with US income must file. Even if a treaty exempts some income, you file to claim the exemption. See our international student ITIN guide.
5. Anyone claiming tax treaty benefits. You cannot claim treaty benefits without filing a return and attaching Form 8833 (Treaty-Based Return Position Disclosure).

Which Form Do You File: 1040-NR or 1040?

Your tax form depends on your tax residency status, not your immigration status. The IRS determines residency through 2 tests:

The Substantial Presence Test

Count all days present in the US in the current year + 1/3 of days in the prior year + 1/6 of days 2 years prior. If the total reaches 183 or more, you are a resident alien for tax purposes and file Form 1040 with worldwide income reported.

What Tax Treaty Benefits Can ITIN Holders Claim?

The US has income tax treaties with 67+ countries. These 4 treaty benefits are most relevant to ITIN holders:

1. Reduced dividend withholding. Default withholding is 30%. Treaties reduce this to 15%, 10%, or 0% depending on the country and ownership percentage.
2. Student and trainee exemptions. Treaties with countries like China (Article 20), India (Article 21), and South Korea (Article 21) exempt scholarship income and limited wages for students.
3. Reduced interest and royalty rates. Treaty rates on interest and royalty payments are 0-15% vs. the 30% default.
4. Business profit exemptions. Without a US permanent establishment, treaty provisions exempt business profits from US taxation.

Claim treaty benefits by attaching Form 8833 to your return. Specify the treaty country, article number, and income type. Failing to disclose triggers a $1,000 penalty per IRC Section 6114.

What Are the 3 Filing Deadlines for ITIN Holders?

How Do You Enter Your ITIN on Tax Forms?

Your ITIN goes in the SSN field on every form. The format is identical: 9XX-XX-XXXX. Here are the 4 key placements:

1. Form 1040-NR or 1040:Enter your ITIN in the “Your social security number” field at the top of page 1. IRS systems recognize ITINs automatically.
2. Form W-7 (new ITIN applicants): If you do not have an ITIN yet, attach Form W-7 to your return and write “ITIN TO BE REQUESTED” in the SSN field.
3. All schedules and attachments: Use your ITIN on Schedule A, Schedule B, Form 8833, and every other form requiring an SSN.
4. State returns: Most states accept ITINs in the SSN field. Enter your ITIN on state forms the same way.

What Deductions and Credits Can ITIN Filers Claim?

The Earned Income Tax Credit (EITC) requires an SSN, not an ITIN. The Child Tax Credit requires an SSN for each qualifying child per IRC Section 24(e). We cover both in depth in ITIN and the Child Tax Credit and why ITIN holders cannot claim the EITC. Learn more about all ITIN benefits at what you can do with an ITIN.

Which Tax Software Works with an ITIN?

Most consumer tax software accepts an ITIN in the field where it asks for a Social Security Number, and supports e-filing. The bigger constraint is Form 1040-NR: several products handle Form 1040 well but do not support 1040-NR at all, which is what most non-resident ITIN holders need.

One caveat that catches people out: if you are applying for an ITIN for the first time, you cannot e-file. The Form W-7 has to travel with the paper return, because the IRS has to assign the number before it can process the return. E-filing becomes available from the following year, once your ITIN exists.

How Do You Get a Tax Refund with an ITIN?

ITIN holders receive refunds through 2 methods:

Direct Deposit (Fastest)

Provide your US bank account routing and account numbers on your return. Refunds arrive in 8 to 12 weeks for paper-filed ITIN returns. E-filed returns process faster. You need a US bank account. See our guides on opening a bank account with an ITIN.

Paper Check

The IRS mails a check to the address on your return. This adds 2 to 4 weeks to processing. Verify your mailing address is current and can receive US mail.

Track your refund at irs.gov/refunds using your ITIN, filing status, and exact refund amount. The tool updates once daily.

What Are the 5 Most Common ITIN Tax Return Mistakes?

1. Using an expired ITIN. The IRS rejects e-filed returns with expired ITINs. You must renew your ITIN first.
2. Filing the wrong form. Using Form 1040 when you should file 1040-NR (or vice versa) causes delays and audits. Determine your residency status first.
3. Forgetting Form 8833 for treaty claims. Claiming a treaty benefit without the disclosure form triggers a $1,000 penalty per IRC Section 6114.
4. Claiming ineligible credits. ITIN holders cannot claim the EITC. The Child Tax Credit requires SSNs for qualifying children.
5. Missing the filing deadline. Late filing when you owe taxes results in compounding penalties: 5% per month for late filing + 0.5% per month for late payment.

Can I Submit a W-7 Without a Tax Return? (Exception Categories)

Normally you must attach a federal tax return to Form W-7. The IRS allows a handful of documented exceptions where you can apply for an ITIN on its own, without a return attached, if you fall into one of these general categories:

• Passive income subject to third-party withholding. For example, opening an interest-bearing US bank account that will report income to the IRS.
• Certain other income covered by a tax treaty, such as scholarship, fellowship, or gambling income where a treaty benefit applies.
• Third-party withholding on income from personal services, such as independent contractor payments subject to withholding before a tax return is due.
• Disposition of a US real property interest by a foreign person, which involves FIRPTA withholding.

Each exception category requires specific supporting documentation (such as a bank letter or withholding agent statement) instead of a tax return. Most freelancers, LLC owners, and employees still need to attach a tax return — the exceptions are for narrower, documented situations. Consult a tax professional or the official IRS Form W-7 instructions to confirm which exception, if any, applies to your situation.