Undocumented immigrants can file taxes using an Individual Taxpayer Identification Number (ITIN) instead of a Social Security number, and many do so every year through the IRS

An Individual Taxpayer Identification Number (ITIN) is a nine-digit number the IRS issues to people who cannot get a Social Security number but have a U.S. tax filing or payment obligation. Undocumented immigrants use an ITIN to file federal income tax returns, report wages, and claim refunds. The IRS does not share ITIN information with immigration enforcement agencies — this is a separate system designed solely for tax purposes.

Filing with an ITIN works the same way as filing with a Social Security number. You report your income, claim deductions, and may receive a refund if you overpaid through withholding. Many undocumented workers have taxes withheld from their paychecks by employers who use ITINs on W-2 forms, which means they often get money back when they file.

The process is straightforward but requires specific documents and steps. You do not need to disclose immigration status to the IRS, and filing taxes does not trigger immigration consequences on its own.

Key Takeaways

  • An ITIN allows undocumented immigrants to file federal tax returns and report income to the IRS without a Social Security number.
  • You can explore for an ITIN by mail using Form W-7 and submitting identity documents; the IRS does not share ITIN data with immigration authorities.
  • Many undocumented workers have taxes withheld from paychecks and receive refunds when they file, just like other taxpayers.
  • Self-employed undocumented immigrants can file Schedule C to report business income and may owe self-employment tax.
  • State and local taxes work differently depending on where you live; some states allow ITIN filers to claim credits, while others do not.

Getting an ITIN: the process process and documents you need

To get an ITIN, you file Form W-7 (process for IRS Individual Taxpayer Identification Number) with the IRS. You can mail it or submit it in person at an IRS office. The form requires your name, date of birth, address, and information about your tax filing reason.

You must include original or certified copies of identity documents. Acceptable documents include a passport, national ID card, driver's license, or birth certificate — the IRS has a specific list. You do not need to prove legal residency or work authorization. The IRS processes Form W-7 applications and mails your ITIN to the address you provide, usually within two to four weeks.

Once you have an ITIN, you use it on all future tax returns and W-2 forms. The number does not expire if you file taxes regularly, though the IRS has rules about inactive ITINs that have not been used for three consecutive years.

How withholding and refunds work for ITIN filers

When an employer withholds federal income tax from your paycheck, they report it to the IRS using your ITIN on your W-2 form. This withholding is held in a government account until you file your return. If you withheld more than you owe in taxes, you receive a refund — the same as any other taxpayer.

Many undocumented workers receive refunds because their withholding is higher than their actual tax liability, especially if they have dependents or claim the Earned Income Tax Credit (EITC). The EITC is a refundable credit available to low-income workers, and ITIN filers can claim it if they meet income and work requirements.

Refunds are mailed to the address on your return. The IRS does not require you to have a bank account or Social Security number to receive a refund check. Some ITIN filers open Individual Taxpayer Identification Number bank accounts (sometimes called ITIN bank accounts) to deposit refunds directly, though this is optional.

Self-employment income and Schedule C reporting

If you are self-employed — working as a contractor, running a small business, or doing gig work — you report your income on Schedule C (Profit or Loss from Business) attached to your Form 1040 tax return. You list your gross income, subtract business expenses, and report your net profit or loss.

Self-employed ITIN filers also owe self-employment tax, which covers Social Security and Medicare contributions. You calculate this on Schedule SE and pay it when you file your return. Self-employment tax is roughly 15.3 percent of your net profit, though you can deduct half of it from your income.

Keeping records of income and expenses is important. Save receipts, invoices, mileage logs, and bank statements for at least three years in case the IRS asks questions about your return.

State and local taxes: what varies by location

State income tax rules differ. Some states do not have income tax at all (Texas, Florida, Nevada, and others). Some states allow ITIN filers to file state returns and claim credits; others do not recognize ITINs or limit which credits you can claim.

California, for example, allows ITIN filers to claim the California Earned Income Tax Credit. New York allows ITIN filers to file state returns. Other states have different policies. You can contact your state tax authority or a tax preparer familiar with ITIN returns to learn what applies where you live.

Local taxes (city or county income taxes) also vary. Some cities tax all residents and workers; others do not. Your employer may withhold local tax from your paycheck, and you would report it on your local return if required.

Tax preparation options and where to find help

You can prepare your own return using tax software that accepts ITINs, or you can work with a tax preparer or CPA. Many community organizations and nonprofits offer free tax preparation for low-income filers, including ITIN holders. The IRS Volunteer Income Tax information (VITA) program provides free tax help at local sites, though availability varies by location.

When choosing a tax preparer, look for someone with experience filing ITIN returns. Some preparers charge fees; others work through nonprofit programs and charge nothing. Ask whether they have filed ITIN returns before and whether they understand the specific rules for undocumented workers.

Tax software like TurboTax and H&R Block's online tools accept ITINs and walk you through the process step by step. If you use software, keep copies of your return and all supporting documents for your records.

Privacy, IRS data sharing, and what filing does not trigger

The IRS operates under strict confidentiality rules. Tax information is not shared with immigration enforcement agencies like U.S. Immigration and Customs Enforcement (ICE). Filing a tax return with an ITIN does not report you to immigration authorities or create a record that can be used against you in immigration proceedings.

However, tax information can be subpoenaed in court if you are involved in a legal case. Additionally, if you claim dependents who are not U.S. citizens, that information appears on your return, though claiming dependents is not itself illegal.

Filing taxes is separate from immigration status. You can file taxes, receive a refund, and maintain your current immigration situation without change. Many undocumented immigrants file taxes every year without consequences.

Frequently Asked Questions

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

You need a tax filing or payment obligation to get an ITIN. If you have no income and no reason to file, you do not need one. If you expect to earn income, you can explore for an ITIN before you start working.

What happens if my employer does not have my ITIN when they issue my W-2?

If your employer withheld taxes but did not report your ITIN correctly, contact them and ask them to issue a corrected W-2. You can then file your return with the correct ITIN. If they refuse, you can file your return anyway and attach a statement explaining the discrepancy.

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

You must file if you have income above the filing threshold for your situation. If you have no income in a given year, you do not have to file. However, if you had taxes withheld, filing gets you a refund.

Can I claim my children as dependents on my ITIN return?

Yes, you can claim dependents on your ITIN return if they meet the IRS definition of a dependent. They do not need to be U.S. citizens or have Social Security numbers. Each dependent needs an ITIN or Social Security number on your return.

What if I owe back taxes from previous years?

You can file amended returns for previous years using Form 1040-X. The IRS has a statute of limitations, typically three years for claiming refunds and ten years for collecting taxes owed. A tax professional can help you determine what you owe and the best way to address it.