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How do I look up an EIN number online?

Incorporation & entity structure

There is no public IRS lookup for your own EIN. For public companies, the SEC EDGAR database lists the EIN on filings. For nonprofits, the IRS Tax Exempt Organization Search works. Private companies are not listed anywhere official.

For your own business, the fastest online route is your bank portal or your payroll account, both of which store the EIN. Our guide covers where to look, including what to do when the confirmation letter is lost.

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Check your EIN confirmation letter (CP 575) first. If that is gone, look at a previously filed tax return, a business bank account application, or any 1099 you have issued. Your bank or your payroll provider will also have it on file.

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