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

Who Needs to File an ITIN Tax Return?

You must file a US tax return with your ITIN if you earned income that is subject to US taxation. This applies to several groups of non-residents and residents who lack an SSN:

• Non-resident aliens with US-source income: If you received wages, rental income, dividends, or royalties from US sources, the IRS requires you to file a return and report that income.
• Foreign nationals with US real estate: Rental income from US properties is taxable. If you sell US property, you must report the capital gain and may owe taxes on the profit.
• Spouses of US citizens or residents: If you are married to a US citizen or resident and choose to file jointly, you need an ITIN to be included on the joint return.
• Students and scholars on visas: F-1, J-1, and M-1 visa holders with US income must file a return. Even if a tax treaty exempts some of your income, you still need to file to claim that exemption.
• Anyone claiming a tax treaty benefit: You cannot claim treaty benefits without filing a return and attaching the required disclosure form.

Form 1040-NR vs Form 1040: Which One Do You File?

The form you use depends on your tax residency status, not your immigration status. The IRS determines tax residency through two tests:

If you are unsure of your status, count your days in the US carefully. The substantial presence test counts all days in the current year, one-third of days in the prior year, and one-sixth of days two years prior. If the total reaches 183 or more, you are a resident alien for tax purposes.

Tax Treaty Benefits for ITIN Holders

The US has income tax treaties with over 60 countries. These treaties can reduce or eliminate US tax on specific types of income. Common treaty benefits include:

• Reduced withholding on dividends: Many treaties reduce the 30% default withholding rate on dividends to 15% or even 0% for qualifying residents.
• Exemption for students and trainees: Several treaties exempt scholarship income and limited wages for students and business trainees from US tax.
• Reduced tax on interest and royalties: Treaty rates on interest and royalty payments are often lower than the standard 30% withholding rate.
• Business profit exemptions: If you do not have a permanent establishment in the US, treaty provisions may exempt your business profits from US taxation.

To claim treaty benefits, attach Form 8833 (Treaty-Based Return Position Disclosure) to your ITIN tax return. Specify the treaty, the article number, and the type of income covered. Failing to disclose treaty positions can result in a $1,000 penalty per failure.

ITIN Tax Return Filing Deadlines

Missing a filing deadline can trigger penalties and interest charges. Keep these dates in mind:

• April 15: Standard deadline for most US tax returns. If you had wages subject to US withholding, this is your deadline.
• June 15: Automatic extension for non-resident aliens who did not have US wages subject to withholding. No form required, but interest accrues from April 15 on any amount owed.
• October 15: Extended deadline if you file Form 4868 before April 15. This gives you six extra months to prepare your return. The extension applies to filing, not to payment. You must estimate and pay any tax owed by April 15 to avoid penalties.

If you owe taxes and file late without an extension, the IRS charges a failure-to-file penalty of 5% per month on unpaid taxes, up to 25%. The failure-to-pay penalty is 0.5% per month. Always file on time, even if you cannot pay the full amount owed.

How to Enter Your ITIN on Tax Forms

Your ITIN goes in the same field where an SSN would normally appear. The format is identical: nine digits in the pattern 9XX-XX-XXXX. Here is where to enter it on each form:

1. Form 1040-NR or Form 1040: Enter your ITIN in the “Your social security number” field at the top of the first page. The IRS systems recognize ITINs in this field automatically.
2. Form W-7 (if applying for ITIN with your return): If you don't have an ITIN yet, attach Form W-7 to your tax return. Write “ITIN TO BE REQUESTED” in the SSN field. The IRS will process your W-7 first, assign your ITIN, then process your return.
3. Schedule attachments: Use your ITIN on all schedules and attachments (Schedule A, Schedule B, Form 8833, etc.) wherever an SSN is requested.
4. State returns: Most states accept ITINs on state tax returns. Enter your ITIN in the SSN field on your state forms as well.

Common Deductions and Credits for ITIN Filers

The deductions and credits available to you depend on whether you file as a non-resident or resident alien:

Note that some credits, such as the Earned Income Tax Credit and Child Tax Credit, require an SSN for the taxpayer or qualifying child. ITIN holders cannot claim these credits unless they or their dependents also hold valid SSNs.

Getting a Tax Refund with Your ITIN

If your employer or a payer withheld more tax than you owe, you are entitled to a refund. ITIN holders receive refunds the same way SSN holders do, though processing times may be slightly longer.

• Direct deposit: The fastest option. Provide your US bank account routing and account number on your return. Refunds typically arrive within 8 to 12 weeks for ITIN returns filed by paper.
• Paper check: The IRS mails a check to the address on your return. This adds 2 to 4 weeks to processing time. Make sure your mailing address is current and can receive US mail.
• E-filing for faster processing: If you use tax software that supports ITIN filing, electronic returns are processed faster than paper returns. Not all tax software supports ITINs, so verify compatibility before purchasing.

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

Common ITIN Tax Return Mistakes to Avoid

These errors delay processing, trigger IRS notices, or result in lost refunds. Avoid them by double-checking your return before filing:

1. Using an expired ITIN. ITINs that have not been used on a federal return for three consecutive years expire automatically. If your ITIN has expired, you must renew it by submitting Form W-7 before filing. The IRS rejects returns with expired ITINs.
2. Filing the wrong form. Using Form 1040 when you should file 1040-NR (or vice versa) causes processing delays and potential audits. Determine your residency status before choosing a form.
3. Forgetting Form 8833 for treaty claims. If you claim a tax treaty benefit without attaching the required disclosure form, the IRS can deny the benefit and charge a $1,000 penalty.
4. Claiming ineligible credits. ITIN holders cannot claim the Earned Income Tax Credit or the Child Tax Credit (unless dependents have SSNs). Claiming these credits incorrectly flags your return for review.
5. Missing the filing deadline. Late filing when you owe taxes results in compounding penalties. File on time or request an extension before April 15.

Discover what else you can do with an ITIN beyond filing taxes, including opening bank accounts and building credit.