How to file taxes with an ITIN — complete guide (2026)

How to file taxes with an ITIN — complete guide

ITIN holders file the same federal return — Form 1040 — on the same deadline as everyone else. Under Internal Revenue Code §6012, anyone with US-source gross income above the filing threshold must file regardless of immigration status. For tax year 2025 (filed in 2026) the threshold for most filers equals the standard deduction: $15,750 single / $31,500 married filing jointly under the 2025 reconciliation law (H.R.1). The same law rewired the credit rules that matter most to ITIN families: the Child Tax Credit (up to $2,200 per child) now requires an SSN for both the child and the taxpayer, while the $500 Credit for Other Dependents remains the credit that works with dependent ITINs. Refunds reach ITIN filers by direct deposit like any other taxpayer — about 21 days for e-filed returns with an active ITIN.

Why file with an ITIN

• It’s the law. Reporting US income is required by IRC §6012 whether or not you’re authorized to work. Not reporting income is tax evasion — a separate legal problem you don’t want stacked on an immigration case.
• Refunds are real money. If your employer withheld federal tax from W-2 wages, the only way to recover over-withholding is filing. ITIN filers forfeit refunds by not filing, not by filing.
• A compliance record helps later. Several immigration processes ask for tax transcripts as evidence of presence and good moral character. Years of filed returns are among the most credible paper trails an immigrant can build.
• It unlocks the financial system. Lenders for ITIN mortgages and credit products ask for your returns.

Key dates

Source: IRS. State deadlines usually match the federal date but vary — check your state tax agency.

Filing by the April deadline matters even when a W-7 is attached — the package postmarked on time counts as filed on time, no matter how long the ITIN takes to arrive. Miss it anyway? You can still file.

Who must file: the thresholds

For most people the filing threshold equals the standard deduction for their status. Tax year 2025 figures (returns filed in 2026), as set by H.R.1:

Two big exceptions that catch ITIN workers:

• Self-employment income of $400 or more triggers a filing requirement on its own — far below the table above.
• Below the threshold but had withholding? File anyway: that’s how the withholding comes back as a refund.

Credits: what works with an ITIN — and what changed in 2025

The 2025 reconciliation law (H.R.1, “OBBBA”) tightened SSN requirements. The current map:

✅ Still work for ITIN filers

• Credit for Other Dependents (ODC) — $500 per qualifying dependent, and the dependent may have an ITIN (issued by the return’s due date). This is the workhorse credit for ITIN families.
• Child and Dependent Care Credit — for work-related childcare expenses.
• Education credits (American Opportunity, Lifetime Learning) — available when the ITIN was issued by the return due date.
• Premium Tax Credit — an ITIN filer can claim it for eligible family members enrolled in Marketplace coverage (the enrollee must be lawfully present; in mixed-status households the filer’s own status doesn’t disqualify the family’s credit).
• Foreign Tax Credit — if your home country taxed the same income; see cross-border tax obligations.

⚠️ Conditional — the 2025 change

• Child Tax Credit (CTC) — up to $2,200 per child (2025, inflation-adjusted after). Two SSN rules now apply: the child must have an SSN, and the taxpayer must have an SSN (on a joint return, at least one spouse). A parent with only an ITIN generally cannot claim the CTC even for a US-citizen child — claim the $500 ODC for that child instead. Full breakdown: tax credits for ITIN holders.

❌ Require SSN — not available

• Federal Earned Income Tax Credit (EITC) — SSN valid for work required for you, your spouse, and each qualifying child. Some states (for example California, Colorado, and Washington) run state EITCs that do accept ITIN filers — check your state’s tax agency.
• The four new H.R.1 deductions — tips, overtime pay, car-loan interest, and the senior deduction — all require an SSN.

Spouse and dependents on the return

• Married filing jointly: each spouse uses their own number — SSN for one, ITIN for the other is a normal combination. Joint filing usually produces the lower tax, and under the CTC rule above, one spouse’s SSN preserves the family’s CTC for SSN children.
• Dependents need their own ITIN (or SSN) by the return due date, and since 2018 the IRS issues dependent ITINs only when a tax benefit (like the ODC) is actually claimed. Each family member’s W-7 travels with the same return — see ITINs for spouses and dependents.
• Dependent tests are the same as for everyone: residency (more than half the year with you), support, age (under 19, or 24 for full-time students, for qualifying children).

Self-employment with an ITIN

Delivery, construction, cleaning, landscaping, childcare — if you’re paid by 1099 or in cash:

1. Schedule C reports the business income and expenses (keep receipts: mileage, supplies, phone — expenses are not optional bookkeeping, they’re how the bill goes down).
2. Schedule SE computes self-employment tax — 15.3% on net earnings (Social Security + Medicare). This applies from $400 of net self-employment income.
3. Quarterly estimated payments (Form 1040-ES) are due if you expect to owe $1,000+ — the dates are in the table above.
4. Clients ask for a Form W-9 — your ITIN goes there. See W-2 vs 1099 with an ITIN and EIN for your business.

How to file: four routes

E-filing rule of thumb: an existing, active ITIN e-files normally. A first-year application can’t e-file — the W-7 package goes on paper. And an expired ITIN must be renewed or the IRS will disallow credits and hold the refund until it is.

Avoid anyone who won’t sign the return as preparer, promises a specific refund before seeing your documents, or wants a percentage of the refund — and never a “notario” without tax credentials.

Refund timing

Track it with the IRS Where’s My Refund tool (works with ITINs) and see refund timing in detail.

Privacy: what filing does and doesn’t expose

Federal tax-return information is confidential under IRC §6103, and for decades the IRS treated ITIN filings as walled off from immigration enforcement. That wall is now actively being litigated: a 2025–2026 IRS–ICE arrangement allows sharing limited taxpayer data for people with final removal orders or under criminal investigation, and court challenges have produced conflicting rulings still on appeal — see where this litigation stands.

What this means practically: filing remains a legal obligation with real benefits (refunds, compliance history), the data-sharing cases concern defined enforcement categories rather than ordinary filers, and anyone with a pending removal case should get case-specific advice from an immigration attorney before making tax decisions out of fear. Find pro bono legal help.

State returns

States accept the federal ITIN — there’s no separate state taxpayer number. If your state has an income tax, a state return is generally due the same day as the federal one. A few states offer their own credits to ITIN filers that the federal government doesn’t (see the EITC note above) — worth checking before assuming nothing applies.

Related information

• Tax credits for ITIN holders — full credit-by-credit breakdown
• How to apply for an ITIN
• ITIN renewal step by step
• Tax season hub — deadlines and refund timing
• Banks that accept ITIN
• Cross-border tax obligations by country

Official source: IRS Form 1040 (Spanish version available)

Last verified: 2026-06-10.

General procedural information for educational purposes. Not legal, tax, or immigration advice. Laws and fees change — verify with the issuing agency before taking action. For case-specific guidance, consult a Certifying Acceptance Agent, Enrolled Agent, CPA, or licensed attorney.

Related procedural information

• ITIN — file federal taxes without SSN — required for federal and most state filings
• ITIN-friendly business banking — for self-employment income
• Form an LLC to structure business income — pass-through tax treatment under ITIN
• Driver’s license requirements by state (DMV) — residency for state tax purposes
• Find legal help for tax issues — VITA + low-income tax clinics