What are the 5 ITIN exceptions that do not require a tax return?

The 5 exception categories are: (1) Third-party withholding on passive income (dividends, interest, royalties, annuities), (2) Tax treaty benefits claimed by a foreign national, (3) Third-party reporting or withholding on income from mortgage interest, (4) Dependents or spouses of US citizens or resident aliens, and (5) Dependents or spouses of nonresident alien visa holders. Each exception requires specific supporting documentation instead of a tax return. See Form W-7 instructions for the documentation required for each exception.

How do I attach Form W-7 to my tax return?

Place completed Form W-7 on top of your federal tax return when mailing both to the IRS. Do not staple them together. Use a paper clip to keep the W-7 attached to the front of the tax return. The W-7 and tax return are mailed together to the IRS ITIN Operation at P.O. Box 149342, Austin, TX 73301-0025. Do not mail the tax return to the standard IRS address for your state. The ITIN address processes both the W-7 and the attached tax return.

Can I file a tax return without an ITIN?

No. You cannot file a tax return without a taxpayer identification number. If you do not have an SSN, you need an ITIN to file. The solution is to submit Form W-7 and your tax return together. The IRS processes the W-7 first, assigns your ITIN, and then processes the tax return using the newly assigned number. This is why the W-7 must be attached to the return when you do not yet have an ITIN.

What tax return form do I file with my ITIN application?

The tax return form depends on your tax situation. Nonresident aliens typically file Form 1040-NR (US Nonresident Alien Income Tax Return). Resident aliens and those electing to file as residents file Form 1040. Spouses filing jointly with a US citizen file Form 1040. Foreign corporations with US activity may need Form 1120-F. The correct form depends on your residency status, income type, and filing election. A tax professional can determine the right form for your situation.

Can I get an ITIN and file taxes at the same time?

Yes. This is the standard process. You submit Form W-7 attached to your tax return. The IRS processes the W-7 first, assigns your ITIN, and then processes the tax return. Both are submitted in a single mailing to the IRS ITIN Operation in Austin, TX. The combined processing takes 6 to 11 weeks for the ITIN plus 6 to 8 weeks for the tax return after the ITIN is assigned. Total time from submission to receiving a tax refund (if applicable) can be 12 to 20 weeks.

What happens to my tax return while waiting for my ITIN?

Your tax return is held by the IRS until your ITIN is assigned. The IRS cannot process a tax return without a valid taxpayer identification number. Once the ITIN is issued, the IRS enters the ITIN on your tax return and processes it through the standard pipeline. This means your refund (if any) is delayed by the full ITIN processing time of 6 to 11 weeks. Plan for the delay and do not expect a refund until 12 to 20 weeks after submission.

Do I need to file a tax return every year to keep my ITIN?

Not necessarily, but your ITIN will expire if you do not use it on a federal tax return for 3 consecutive years. For example, if you received your ITIN in 2023 and did not file a tax return in 2023, 2024, or 2025, your ITIN expires at the end of 2026. Expired ITINs can be renewed using the same Form W-7 with the renewal checkbox. To avoid expiration, file a federal tax return at least once every 3 years using your ITIN.

Can I claim a tax refund with an ITIN?

Yes. If you overpaid taxes or had excess withholding, you can claim a refund by filing a tax return with your ITIN. Common refund situations for ITIN holders include excess FIRPTA withholding on property sales, overwithholding on US-source income, and tax treaty benefits that reduce your US tax liability. Note that ITIN holders are not eligible for the Earned Income Tax Credit (EITC) or the Child Tax Credit (CTC), though dependents with ITINs may qualify their parent for the Other Dependent Credit.

Is there a deadline for filing a tax return with my ITIN application?

The standard tax filing deadline is April 15 for the prior tax year. If you miss this deadline, you can file for an automatic extension using Form 4868, which gives you until October 15. You can also file a late return after October 15, but penalties and interest may apply on any tax owed. There is no separate deadline for the ITIN application itself beyond the tax filing deadline. If you are filing a late return from prior years, you can still attach a W-7 and apply for an ITIN.

Updated April 2026

ITIN for Tax Return Only: What You Need to Know 2026

The ITIN (Individual Taxpayer Identification Number) was created by the IRS specifically for tax filing purposes. In most cases, you must attach a federal tax return to your Form W-7 application. The IRS processes your W-7 and tax return together, assigning your ITIN before processing the return. There are 5 exception categories where you can apply for an ITIN without a tax return. This guide explains the tax return requirement, all 5 exceptions, and how to handle the combined ITIN and tax filing process.

Why Does the IRS Require a Tax Return with Form W-7?

The IRS created the ITIN in 1996 under IRC Section 6109 to ensure that individuals with US tax obligations could file returns and pay taxes even without SSN eligibility. The ITIN exists solely for tax administration purposes. It is not an identification document, does not authorize employment, and does not provide immigration benefits.

Because the ITIN's purpose is tax compliance, the IRS requires proof that you have a genuine tax filing need. The most direct proof is the tax return itself. By requiring a tax return with the W-7 application, the IRS ensures that ITINs are issued only to individuals who actually need them for tax purposes.

The tax return also serves a practical purpose: the IRS processes the W-7 and return together. Your newly assigned ITIN is entered on the tax return, which is then processed through the standard tax filing pipeline. This eliminates the need for you to file a separate tax return after receiving your ITIN.

How to Submit Form W-7 with Your Tax Return

The process for submitting Form W-7 with a tax return is straightforward but must be done correctly to avoid delays.

Prepare your tax return. Complete your federal tax return (Form 1040, 1040-NR, or other applicable form). Where the form asks for your SSN or ITIN, write "ITIN applied for" or leave it blank. The IRS will enter your ITIN after it is assigned.
Complete Form W-7. Fill out all applicable fields on Form W-7. Check the appropriate box for your reason for applying. Sign and date the form.
Attach W-7 to the front of the return. Place the completed W-7 on top of the tax return. Use a paper clip (not a staple) to keep them together.
Include identification documents. Add your original passport (or other accepted documents) to the mailing package.
Mail everything together. Send the complete package to: IRS ITIN Operation, P.O. Box 149342, Austin, TX 73301-0025. Do not mail the tax return to the standard IRS address for your state. The Austin ITIN address handles both the W-7 and the attached tax return.

Important:

Do not e-file a tax return if you are applying for an ITIN. The W-7 and tax return must be submitted together by mail (or through a CAA). E-filed returns require a valid TIN at the time of filing, which you do not yet have.

5 Exceptions: When You Do Not Need a Tax Return with Form W-7

The IRS Form W-7 instructions define 5 exception categories where an ITIN can be issued without an attached tax return. Each exception requires specific supporting documentation instead.

Exception 1: Third-Party Withholding on Passive Income

You can apply without a tax return if a third party (such as a bank, brokerage, or partnership) is withholding tax on passive income paid to you. Passive income includes interest, dividends, royalties, annuities, and other investment income. You must include a signed letter from the withholding agent confirming the withholding and your need for an ITIN. This exception is common for foreign investors in US securities and foreign partners in US partnerships.

Exception 2: Tax Treaty Benefits

Foreign nationals claiming benefits under a US tax treaty can apply for an ITIN without a tax return. You must include a completed Form W-8BEN (Certificate of Foreign Status of Beneficial Owner) and documentation of the treaty benefit being claimed. This exception applies to individuals receiving US-source income that is reduced or exempt under a tax treaty, such as royalties, licensing fees, or service income.

Exception 3: Third-Party Reporting on Mortgage Interest

If you receive US mortgage interest income that is subject to third-party information reporting, you can apply for an ITIN without a tax return. This typically applies to foreign nationals who have provided seller financing on US real estate and the buyer is reporting the interest payments on Form 1098. Include the 1098 or a letter from the buyer/payer as supporting documentation.

Exception 4: Dependents or Spouses of US Citizens/Resident Aliens

If you are a dependent or spouse of a US citizen or resident alien and are being claimed on their tax return, you may qualify for this exception. The US citizen or resident must include a letter stating that they will claim you on their tax return and provide their SSN. This exception allows the dependent or spouse to obtain an ITIN separately from the primary filer's tax return filing.

Exception 5: Dependents or Spouses of Nonresident Alien Visa Holders

Similar to Exception 4, this covers dependents and spouses of nonresident aliens who hold US visas. The visa holder must provide a letter and their ITIN or SSN. Supporting documentation includes a copy of the visa holder's visa, I-94, and a statement of the dependent relationship.

Which Tax Return Form Should You File with Your ITIN Application?

Your Situation	Tax Form	Notes
Nonresident alien with US income	Form 1040-NR	Most common for ITIN applicants
Resident alien / first-year choice election	Form 1040	If you meet the substantial presence test
Spouse filing jointly with US citizen	Form 1040	Joint return with election statement
Foreign-owned single-member LLC	Form 5472 + pro forma 1120	Reporting requirement for foreign-owned entities
Sold US real property (FIRPTA)	Form 1040-NR + Form 8288-B	To claim refund of excess withholding

Timeline: ITIN Application + Tax Return Processing

When you submit Form W-7 with a tax return, the IRS processes them sequentially. Here is the combined timeline.

W-7 processing and ITIN assignment: 6 to 11 weeks
ITIN entered on your tax return: 1 to 2 weeks
Tax return processing: 6 to 8 weeks
Refund issued (if applicable): 1 to 3 weeks after return processing

Total timeline from submission to refund: 14 to 24 weeks. This is significantly longer than standard tax return processing (which takes 6 to 8 weeks for e-filed returns). Plan accordingly and do not rely on a quick refund. If you need to track the overall timeline, our detailed guide covers every phase.

Tax Filing Tips for ITIN Applicants

File an extension if you need more time. File Form 4868 before April 15 to get an automatic extension to October 15. This gives you time to gather documents and prepare a thorough application without rushing.
Do not e-file. ITIN applications must be submitted by mail. You cannot e-file a tax return without a valid TIN already on file.
Report all US-source income. Include wages, rental income, investment income, business income, and any other income from US sources on your tax return.
Claim applicable tax treaty benefits. If your home country has a tax treaty with the US, you may be entitled to reduced tax rates on certain income types. Include the treaty article reference on your return.
Keep copies of everything. Make copies of your W-7, tax return, and all supporting documents before mailing. You may need them for future filings or if the IRS requests corrections.

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Frequently Asked Questions About ITIN and Tax Returns

In most cases, yes. The IRS requires a federal tax return attached to Form W-7 as part of the ITIN application. The ITIN was created specifically for tax filing purposes, so the default requirement is a tax return. However, the IRS recognizes 5 exception categories where you can apply for an ITIN without attaching a tax return. These exceptions cover treaty benefits, third-party withholding, mortgage interest, dependents/spouses of US persons, and certain nonresident alien situations.

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Learn about the complete process in our W-7 Form Guide.