ITIN Support for US Tax Filing
An Individual Taxpayer Identification Number (ITIN) is required by non-US persons — including foreign spouses of US citizens and non-resident alien LLC owners — who need to file US tax returns or be included on a joint return. Obtaining an ITIN requires filing Form W-7 with original identity documents or certified copies, and must be coordinated carefully with the tax return. We handle ITIN applications alongside your filing.
Get started with your filingWho this is for
- ✓ Non-US-citizen spouses who need an ITIN to be included on a joint US tax return
- ✓ Foreign owners of US LLCs who need an ITIN for Form 5472 or 1040-NR filing
- ✓ Non-resident aliens receiving US-source income who must file Form 1040-NR
- ✓ Foreign nationals who previously lacked a US tax ID but now have US filing obligations
What this filing may involve
Every situation is different. The forms below commonly apply — your specific filing may vary.
- 1 Form W-7 — Application for IRS Individual Taxpayer Identification Number
- 2 Form 1040 (MFJ) — joint return including the non-US spouse with ITIN
- 3 Form 1040-NR — US Nonresident Alien Income Tax Return
- 4 Form 5472 — for non-resident LLC owners who need an ITIN for the filing
Documents usually needed
- 📄 Original passport or certified copy of passport for identity verification
- 📄 US visa (if applicable) or other status documentation
- 📄 Evidence of need for ITIN (e.g., tax return requiring ITIN, Form 5472)
- 📄 Completed Form W-7 with all required supporting documentation
How Nomadic.Tax works
AI-assisted preparation with licensed professional review — every time.
We prepare Form W-7 and advise on the correct identity documentation to submit
The W-7 is submitted alongside the required tax return or exception documentation
We track ITIN assignment (typically 7–11 weeks) and update your records
Once the ITIN is assigned, we complete or amend the associated tax filing
When human review matters
- ⓘ ITIN applications require either original documents or certified copies — photocopies are not accepted
- ⓘ Using a Certifying Acceptance Agent (CAA) avoids submitting original documents to the IRS
- ⓘ ITINs for non-residents expire if not used on a return for 3 consecutive years
[INSERT: customer testimonial, e.g. "non-US spouse of a US expat in Tokyo, Japan, saved money and stress using Nomadic.Tax"]
- non-US spouse of a US expat, Tokyo, Japan
Relevant plans
Choose the package that best fits your situation, or view all plans.
- ✓ Everything in Standard
- ✓ Schedule C & SE for self-employment
- ✓ Multiple income sources and currencies
- ✓ Everything in Premier
- ✓ Foreign Earned Income Exclusion (Form 2555)
- ✓ Foreign Tax Credit (Form 1116)
- ✓ FBAR filing (FinCEN 114) included
Frequently asked questions about ITIN Support for US Tax Filing
What is an ITIN and who needs one?
An Individual Taxpayer Identification Number is a 9-digit number issued by the IRS to individuals who need to file US taxes but aren't eligible for a Social Security Number. It's required for non-US persons included on a joint return, non-resident LLC owners, and others with US filing obligations but no SSN.
Can I file my tax return before I have an ITIN?
You can file your return with the ITIN application simultaneously. The return is typically held while the ITIN application is processed, then processed once the ITIN is issued. Alternatively, you can file an extension while awaiting the ITIN.
How long does it take to get an ITIN?
Typically 7–11 weeks when mailing the application to the IRS directly. Using a Certifying Acceptance Agent (CAA) like Nomadic.Tax can allow certified copies of documents to be submitted, avoiding the need to mail original passports.