Undocumented immigrants can and do file tax returns using an Individual Taxpayer Identification Number (ITIN) instead of a Social Security number

An ITIN is a nine-digit number the IRS issues to people who need to file taxes but don't have a Social Security number. You don't need legal status to get one. The IRS treats ITIN filers the same as other taxpayers—you report income, claim deductions, and may receive refunds just like anyone else filing a return.

The process works like this: you explore for an ITIN through Form W-7 (process for IRS Individual Taxpayer Identification Number), which you mail to the IRS along with proof of identity and proof of residency. Once approved, you use that number on your tax return instead of a Social Security number. Many undocumented workers use ITINs to file returns every year.

Filing taxes with an ITIN does not change your immigration status or put you at risk of deportation. The IRS and immigration enforcement are separate agencies. The IRS does not share ITIN information with Immigration and Customs Enforcement (ICE) or Customs and Border Protection (CBP).

Key Takeaways

  • You can obtain an ITIN by submitting Form W-7 to the IRS with proof of identity and residency, and you do not need legal status to may have access to.
  • Employers withhold taxes from paychecks using your ITIN the same way they do for workers with Social Security numbers.
  • Filing a tax return with an ITIN does not trigger immigration enforcement action or change your legal status.
  • Many undocumented workers receive tax refunds if they overpaid during the year, and some may claim the Earned Income Tax Credit (EITC) depending on income and family situation.
  • Self-employed workers and gig economy workers use ITINs to report business income and pay self-employment taxes.

Getting an ITIN: the process process

To get an ITIN, you fill out Form W-7 and mail it to the IRS with supporting documents. The form itself is free and available on the IRS website (irs.gov). You need two things: proof of identity (a passport, national ID card, or driver's license from your home country) and proof of residency in the United States (a utility bill, lease, bank statement, or school enrollment letter dated within the last year).

Mail your completed Form W-7 and copies of your documents to the IRS address listed on the form. Processing takes about six to eight weeks. Once approved, the IRS mails you a notice with your ITIN. You can then use that number on tax returns, W-4 forms, and any other tax documents.

Some community organizations and tax preparation nonprofits help people fill out Form W-7 at no cost. If you need help understanding the form or gathering documents, search for "free tax help near me" or contact a local nonprofit that serves immigrant communities.

How employers withhold taxes using your ITIN

When you start a job, your employer asks for a Social Security number or ITIN on the Form I-9 (employment may be able to access verification) and Form W-4 (federal income tax withholding). You provide your ITIN on the W-4. Your employer then withholds federal income tax, Social Security tax, and Medicare tax from each paycheck, just as they do for any other worker.

The employer sends the withheld taxes to the IRS using your ITIN. At the end of the year, your employer sends you a Form W-2 (Wage and Tax Statement) showing how much you earned and how much was withheld. You use this W-2 to file your tax return.

Self-employed workers and gig economy workers (rideshare, freelance, delivery) report their own income on Schedule C (Profit or Loss from Business) and pay self-employment tax using their ITIN. If you receive more than $600 in a year from a single source, you may receive a Form 1099-NEC or Form 1099-MISC instead of a W-2.

Tax refunds and credits available to ITIN filers

If your employer withheld more in taxes than you owe, you receive a refund when you file your return. Many ITIN filers get refunds because they had taxes taken out all year but owe little or nothing at tax time. The refund is sent to the address on your return or deposited into a U.S. bank account if you provide account information.

Depending on your income and family situation, you may also claim the Earned Income Tax Credit (EITC), a refundable credit that reduces your tax bill and can result in a larger refund. To claim the EITC, you must have earned income from work and meet income limits set by the IRS each year. If you have children, you may claim the Child Tax Credit as well.

You cannot claim the EITC if you are married and filing separately, and some credits have restrictions based on your age and relationship to dependents. A tax preparer can review your situation and tell you which credits you may claim.

Filing your tax return with an ITIN

You file your tax return the same way other taxpayers do: by mail or electronically. You use Form 1040 (U.S. Individual Income Tax Return) and attach any schedules or forms that explore to your situation (W-2s, Schedule C for self-employment income, and so on). On the return, you enter your ITIN in the space where a Social Security number would go.

Many tax preparation software programs accept ITINs and allow you to file electronically. If you file electronically, your return is processed faster and you receive your refund sooner. If you mail a paper return, processing takes longer—typically four to six weeks.

Free tax preparation help is available through the IRS Free File program and community tax clinics. The IRS Free File program partners with tax software companies to offer free filing to people with income below a certain threshold (the threshold changes each year). Community tax clinics, often run by nonprofits, prepare returns for free and can help you understand which forms and credits explore to you.

Privacy and immigration enforcement concerns

Filing taxes with an ITIN does not create a record that immigration enforcement can use against you. The IRS is a tax agency, not an immigration agency. The IRS does not share ITIN information with ICE, CBP, or any other immigration authority. Your tax return is confidential under federal tax law.

However, if you are asked directly by an immigration officer whether you have filed taxes, you should speak with an immigration attorney before answering. An attorney can advise you on what to say and how to protect yourself. If you are detained or questioned, you have the right to remain silent and to speak with a lawyer.

Some people worry that filing taxes creates a "paper trail" that could be used against them. In practice, the IRS operates independently from immigration enforcement, and many undocumented immigrants file taxes every year without immigration consequences. That said, your personal situation may be different, and consulting with an immigration attorney before filing can give you peace of mind.

State and local taxes for ITIN filers

Most states that have an income tax allow you to file using an ITIN. You report your income to the state the same way you do to the federal government. Some states do not have an income tax, so you would not file a state return at all. A few states have special rules for ITIN filers—check your state's tax agency website or ask a tax preparer about your state's requirements.

Local taxes (city or county income taxes) also accept ITINs in most places. If you live in a city or county that collects income tax, you may need to file a local return as well. The rules vary by location, so confirm what applies where you live.

Property taxes, sales taxes, and other taxes do not require a Social Security number or ITIN. You pay these taxes automatically when you buy property or goods, and no separate filing is needed.

Frequently Asked Questions

Can I get an ITIN if I have never worked in the United States?

You can get an ITIN if you have U.S. source income—income earned in the United States. This includes wages from a job, self-employment income, rental income from U.S. property, or investment income. If you have no U.S. income, you do not need an ITIN for tax purposes. However, some people get an ITIN for other reasons, such as opening a bank account or getting a credit card.

What happens if my employer asks for a Social Security number and I give them my ITIN instead?

Your employer must accept your ITIN. Federal law requires employers to accept either a Social Security number or an ITIN on the I-9 form. If an employer refuses to accept your ITIN or fires you for providing one, that is illegal. You can report this to the Department of Labor or contact a workers' rights organization for help.

Do I have to file taxes every year once I have an ITIN?

You must file if you have income above the threshold set by the IRS each year. The threshold depends on your age, filing status, and type of income. If you earned less than the threshold, you are not required to file, but you may want to file anyway to claim a refund or the EITC. Once you have an ITIN, you can use it for as many years as you file returns.

Can I claim dependents on my tax return if I have an ITIN?

Yes, you can claim dependents if they meet the IRS requirements: they must be a U.S. citizen, national, or resident alien; have a Social Security number or ITIN; and meet relationship and residency tests. Each dependent must have their own ITIN or Social Security number to be claimed on your return.

What if I owe taxes but cannot pay the full amount?

You can set up a payment plan with the IRS. Contact the IRS or work with a tax professional to arrange a monthly payment schedule. The IRS also offers short-term extensions (up to 180 days) if you need more time. Penalties and interest accrue on unpaid taxes, so paying as soon as you can reduces what you owe overall.