Yes, many undocumented immigrants do pay federal income tax

Undocumented immigrants pay federal income tax when they earn wages, and many do so every year. The IRS does not require citizenship or legal status to file a tax return—only a valid taxpayer identification number. Most undocumented workers use an Individual Taxpayer Identification Number (ITIN), which the IRS issues to people who cannot obtain a Social Security number but have a tax filing reason.

When an undocumented worker is paid through a formal employer who withholds taxes, those taxes go directly to the federal government. When someone is self-employed or paid under the table, they can still file a return and pay what they owe. The IRS's position is straightforward: tax obligations are separate from immigration status.

Key Takeaways

  • Undocumented immigrants can obtain an ITIN from the IRS and use it to file federal income tax returns.
  • Employers who withhold taxes from undocumented workers' paychecks send those taxes to the federal government, regardless of the worker's immigration status.
  • Many undocumented immigrants file returns voluntarily each year, even when not required to do so.
  • State and local income taxes work the same way as federal tax—they are owed based on income earned, not on immigration status.
  • Filing a tax return does not change immigration status or trigger deportation proceedings on its own.

How the ITIN works and who gets one

An Individual Taxpayer Identification Number is a nine-digit number the IRS issues to individuals who need to file taxes but do not have a Social Security number. Undocumented immigrants are one group that can receive an ITIN. To get one, you file Form W-7 with the IRS, along with proof of identity and proof that you have a U.S. tax filing reason—usually a job or self-employment income.

The ITIN allows you to file a federal income tax return and report income to the IRS. It does not grant work authorization, change your immigration status, or create a separate legal category. It is purely a tax identification tool. The IRS issues ITINs to millions of people, including some visa holders, foreign nationals with U.S. income, and undocumented workers.

Tax withholding when you work for an employer

If you work for a formal employer—one who keeps payroll records and issues a W-2 form—federal income tax, Social Security tax, and Medicare tax are usually withheld from your paycheck automatically. This happens whether you are a citizen, a visa holder, or undocumented. The employer sends those withheld amounts to the IRS and the Social Security Administration.

Many undocumented workers are hired under false documents (a fake Social Security number or someone else's number) or are hired under the table with no tax withholding at all. In the first case, taxes are being paid but under a number that is not yours. In the second case, no taxes are withheld, and you would owe them if you file a return. Either way, you can file your own return using your ITIN to report your actual income and settle your tax account with the IRS.

Filing a return and claiming refunds

Many undocumented immigrants file federal income tax returns each year. Some do so because taxes were withheld from their paychecks and they want a refund of overpaid amounts. Others file voluntarily to report self-employment income or to claim the Earned Income Tax Credit (EITC), a refundable credit for low-income workers that does not require citizenship or legal status.

When you file a return with an ITIN, you report your income, claim deductions and credits you are may have access to to, and either pay what you owe or receive a refund. The process is the same as for any other taxpayer. You can file on your own using tax software, through a tax preparer, or with help from a community organization. Many nonprofits offer free tax preparation to low-income filers, including undocumented immigrants.

State and local income taxes

State and local income tax works the same way as federal tax: it is owed based on income earned in that state or locality, regardless of immigration status. Some states do not have an income tax at all. Others require all residents and workers to file. A few states have specific rules about ITINs or undocumented workers, but most treat tax filing the same way the IRS does.

If you live and work in a state with income tax, you may owe state tax in addition to federal tax. You can usually file your state return using the same ITIN you use for federal taxes. Some states allow you to claim state-level credits and deductions. Check your state's tax authority website or ask a tax preparer about the rules in your state.

What happens if you do not file

If taxes were withheld from your paychecks but you do not file a return, you will not receive a refund of the overpaid amount. The money stays with the government. If you owe taxes and do not file, the IRS can assess penalties and interest, and the debt can accumulate over time.

Filing a tax return does not change your immigration status or automatically trigger any immigration enforcement action. The IRS and immigration enforcement are separate agencies with different missions. However, filing does create a record with the federal government that you earned income in the United States. You should understand this before deciding whether to file, and you may want to discuss it with an immigration attorney if you have concerns about your specific situation.

Self-employment and cash income

If you are self-employed or paid in cash, no taxes are withheld automatically. You are responsible for calculating and paying your own federal and state income taxes, as well as self-employment tax (Social Security and Medicare for self-employed people). You can file a return using your ITIN to report this income and pay what you owe.

Many undocumented workers in construction, domestic work, agriculture, and service industries are paid in cash. If you earn cash income, you can still file a return and report it. Keeping records of your income—even straightforward notes of dates, amounts, and who paid you—makes filing easier and more accurate. You can deduct legitimate business expenses to reduce your taxable income.

Frequently Asked Questions

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

The IRS requires a tax filing reason to issue an ITIN. The most common reason is U.S. employment income. Other reasons include self-employment income, rental income from U.S. property, or investment income. If you have no U.S. income source, you would not meet the requirement for an ITIN.

Will filing taxes make me a target for deportation?

Filing a tax return does not automatically trigger deportation or immigration enforcement. The IRS and immigration agencies operate separately. However, filing does create a federal record of your presence and income. If you are concerned about immigration consequences, speak with an immigration attorney before filing.

Can I claim dependents on my tax return if I am undocumented?

Yes, you can claim dependents on a federal tax return filed with an ITIN. Your dependents must have valid ITINs or Social Security numbers. You can claim the child tax credit and other dependent-related credits if you meet the requirements, regardless of your immigration status.

What if my employer is not withholding taxes?

If your employer is not withholding taxes and you are paid in cash or under the table, you are responsible for reporting that income on a tax return and paying the tax yourself. You can file a return using your ITIN to report the income and settle your tax obligation with the IRS.

Do I need to report cash tips or informal work income?

Yes, all income—including tips, cash payments, and informal work—is subject to federal income tax. You can file a return using your ITIN to report this income. Reporting income does not change your immigration status, though it does create a record with the federal government.