Who needs an ITIN?
Who typically applies for an ITIN, and how to know if it's the right ID for your situation.
Direct answer
You may need an ITIN if you have a US tax filing or reporting requirement but are not eligible for a Social Security Number. This commonly applies to non-resident foreign nationals, certain spouses or dependents of US visa holders, and some non-US business owners with US income.
Simple explanation
If you might qualify for an SSN, that's typically the right route — an ITIN is specifically for people who cannot get one. The IRS expects you to confirm SSN ineligibility before applying.
Common situations that require an ITIN
- 1
Non-resident aliens with US tax filing obligations
For example, foreign owners of US LLCs or those with US-source investment income.
- 2
Dependents or spouses of US visa holders
Who themselves are not eligible for an SSN but appear on a tax return.
- 3
Foreign nationals receiving US-source income
Including certain royalties, contract income, or treaty-protected income.
- 4
Anyone needing to file a federal return without SSN eligibility
If you must file, but you can't get an SSN, the ITIN is your alternative.
Summary
- •ITINs are for people with US tax obligations who can't get an SSN.
- •If you might be SSN-eligible, apply for an SSN instead.
- •Common applicants: non-resident foreign nationals and their dependents.
- •Form W-7 is the official application — get it directly from IRS.gov.