There are many places where you can find your EIN (employer identification number).

  • EIN confirmation letter: Look for Form CP 575, which the IRS sent to confirm your EIN.
  • Last year’s tax return: If you’ve had an EIN for previous tax years, look for it on your old tax returns.
  • Business documents: Your EIN should be listed on business licenses and paperwork, such as W-2s or 1099s.
  • IRS Business & Specialty Tax Line: If you have exhausted every possibility and still can’t find your EIN, call the IRS for assistance at 800-829-4933.

EINs are just one of the many aspects of taxes that can be complicated for employers and small-business owners. The good news? You don’t have to tax alone. Book your appointment to work with the pros today.

Sharon Brucker, CPA Senior Tax Research Analyst Published on: August 08, 2025
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*This content is for general informational purposes only. It is not intended to be comprehensive and should not be construed as professional tax or financial advice for any specific individual tax situation. Taxpayers should always consult a qualified professional for individual guidance. This information constitutes a solicitation under the Treasury Department's Circular 230. Most offices are independently owned and operated.