Tax Obligations for Undocumented Immigrants in the US

Are Undocumented Immigrants Required to Pay Taxes?

Yes. US tax law requires all individuals who earn income in the United States to file and pay taxes, regardless of immigration status. This includes undocumented immigrants. The Internal Revenue Code does not condition tax obligations on citizenship or legal residency - if you earn money in the US, you owe taxes on it.

Does the IRS Share Information with Immigration?

Your Tax Data Is Protected by Law

The IRS is prohibited from sharing individual taxpayer information with immigration enforcement agencies, including ICE and CBP. This protection comes from Section 6103 of the Internal Revenue Code, which makes it a federal crime to disclose taxpayer return information without authorization.

Filing taxes does not put you on any immigration enforcement radar. In fact, building a tax filing history can be evidence of good moral character, which is relevant in certain immigration proceedings.

How to File: The ITIN

What Is an ITIN?

If you do not have a Social Security Number, you must obtain an Individual Taxpayer Identification Number (ITIN) from the IRS. An ITIN is a 9-digit number that starts with the digit 9 (for example: 9XX-XX-XXXX). It is used only for tax purposes and does not authorize work or provide any immigration status.

How to Apply for an ITIN

To get an ITIN, you file Form W-7 along with:

• Your completed federal tax return (Form 1040 or 1040-NR)
• Original identity documents or certified copies (passport is most common)
• Documents proving foreign status

You can submit your W-7 application by mail, in person at an IRS Taxpayer Assistance Center, or through an IRS-certified Acceptance Agent.

What Tax Credits Are Available?

Credits You Can Claim with an ITIN

The Child Tax Credit for ITIN Filers

If your children were born in the US or have SSNs, you may claim the Child Tax Credit (CTC) even if you file with an ITIN. For 2025, the CTC is up to $2,000 per qualifying child, with up to $1,700 refundable as the Additional Child Tax Credit.

Why Filing Taxes Matters Even Without Work Authorization

Benefits of Having a Tax Filing History

Filing taxes when you are undocumented carries real practical benefits:

1. Establishes a legal paper trail showing you have lived and worked in the US - relevant if you later become eligible for a visa or green card
2. Demonstrates good moral character - a requirement for naturalization and many immigration benefits
3. Qualifies you for potential future tax refunds if laws change
4. Creates records of your economic contribution to the US
5. May be required if you open a bank account or apply for certain benefits

What Income Must Be Reported?

All income earned in the US must be reported, including:

• Wages paid in cash (even without a W-2)
• Self-employment income
• Income from day labor, construction, domestic work, or agriculture
• Tips and gratuities
• Rental income

Even if your employer paid you in cash and never issued a W-2, you are still legally required to report that income.

Filing Deadline and Penalties

The federal tax filing deadline is April 15 each year. For 2025 income, file by April 15, 2026. Failing to file when you owe taxes results in failure-to-file penalties (5% of unpaid taxes per month, up to 25%) plus interest. If you are owed a refund, there is no penalty for filing late - but you must file within 3 years to claim the refund.

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Your exact filing requirements depend on how much you earned, where you live, and your family situation. Get Your Personalized Form List to understand exactly what you need to file.