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Fact check: What is an Individual Taxpayer Identification Number (ITIN) and how do undocumented immigrants use it?

Checked on June 11, 2025

1. Summary of the results

An Individual Taxpayer Identification Number (ITIN) is a 9-digit tax identification number issued by the IRS for individuals who need to file taxes but are not eligible for a Social Security Number (SSN) [1]. Created by the U.S. Department of Treasury in 1996, ITINs allow immigrants without Social Security numbers to comply with U.S. tax laws [2]. As of 2022, the IRS had issued 26 million ITINs, with 5.8 million remaining active that year [2].

2. Missing context/alternative viewpoints

Several crucial pieces of context are missing from the original question:

  • Economic Impact: In 2022, undocumented immigrants contributed over $96 billion in federal, state, and local taxes [3].
  • Broader Functionality: While primarily for tax purposes, ITINs have evolved to become tools for economic and social inclusion, enabling immigrants to:
  • Open bank accounts
  • Apply for loans [2]
  • Important Limitations: ITINs:
  • Do not provide work authorization
  • Do not grant eligibility for Social Security benefits
  • Are for tax purposes only [1]
  • Current Challenges: A new IRS-ICE data-sharing agreement threatens the trust that previously encouraged immigrants to file taxes using ITINs, potentially affecting future tax compliance [3].

3. Potential misinformation/bias in the original statement

The original question's framing might lead to some misconceptions:

  • It focuses solely on undocumented immigrants, when ITINs are actually designed for all resident and nonresident aliens who need to file taxes but can't get an SSN [1].
  • It doesn't acknowledge that while ITIN holders contribute to federal programs through their taxes, they are excluded from receiving benefits like Social Security and Medicare [3].
  • The question might suggest ITINs are primarily used by undocumented immigrants to evade proper taxation, when in fact they are a legitimate tool created by the Treasury Department to ensure tax compliance [2].
Want to dive deeper?
How does the IRS verify identity when issuing ITINs to undocumented immigrants?
What are the legal implications of undocumented immigrants paying taxes through ITINs?
Can ITIN holders claim tax refunds and what benefits are they eligible for?
How do immigration enforcement agencies use ITIN data in deportation cases?
What is the difference between an ITIN and a Social Security Number for tax purposes?