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An Employer Identification Number (EIN) is crucial for running a business in the United States. It’s used for tax filings, identifying your business to the IRS, and many other official purposes. But what if you suspect your EIN is fake?

What Is an EIN?

An Employer Identification Number (EIN) is a unique nine-digit number (formatted as XX-XXXXXXX) the IRS assigns to businesses for identification, tax reporting, and compliance. Ensuring that an EIN is real protects you and your business from fraud and regulatory violations.

Why Verifying an EIN Matters

  • Prevents business fraud and identity theft.
  • Ensures regulatory compliance.
  • Avoids penalties related to using or accepting a fake EIN.
  • Establishes trust in business relationships

How to Verify Your EIN: Step-by-Step Guide

Ensuring your Employer Identification Number (EIN) is genuine is crucial to avoid fraud, stay compliant with tax regulations, and foster trustworthy business relationships. Below is a step-by-step guide to verify whether your EIN is authentic or not.

1. Check the EIN Format

  • Proper Length & Structure: An EIN must be a nine-digit number, formatted as XX-XXXXXXX.
  • Prefix Restrictions: Valid EINs never start with certain prefixes. Invalid starting numbers include: 00, 07, 08, 09, 17, 18, 19, 28.
  • Avoid SSN Confusion: EINs are different from Social Security Numbers (SSNs), which are formatted as XXX-XX-XXXX.

2. Match the EIN Against Official IRS Prefix Lists

The IRS assigns EINs using specific two-digit prefixes based on location, year, and application method. If your EIN’s prefix is not on the current IRS list, it could be suspicious.

3. Cross-Check with Official Databases

Verifying an EIN against recognized databases provides strong evidence of authenticity:

  • IRS Exempt Organizations Search: For nonprofits, confirm EINs directly via IRS online tools.
  • SEC’s EDGAR Database: Public companies report their EINs in official filings. Search for the business and look for the “IRS Employer Identification No” field.
  • State Secretary of State (SOS) Websites: Many states offer business entity searches. Enter the business name or EIN; ensure both match and are current.

Here an important thing: If you cannot find the business or the EIN doesn’t match, investigate further before proceeding.

4. Use the IRS TIN (EIN) Matching Service

  • The IRS provides a Taxpayer Identification Number (TIN) matching program.
  • Primarily used by payers and certain business filers, this tool confirms if the EIN and legal business name are a match in the IRS system.
  • Particularly useful before filing 1099 forms or hiring vendors.

You must register for access, and it’s especially common for accounting or payroll departments to use this service.

5. Contact the IRS Directly

  • Phone: Call the IRS Business & Specialty Tax Line at 1-800-829-4933.
  • Availability: Monday–Friday, usually 7:00AM to 7:00PM local time.
  • Be ready to provide your information and the EIN in question. IRS staff can check the EIN for validity and status—and can resend confirmation letters if you are the business owner.

6. Review Official Documents

A real EIN should consistently appear across official documents:

  • IRS CP 575 “EIN Confirmation Notice”: The original letter from the IRS assigning the EIN.
  • IRS Letters (147C): Used for verification if the original CP 575 is lost.
  • Official Tax Forms: EIN appears on 941, W-2, W-3, and other IRS forms for employees and payroll.
  • Bank Account Documents: EIN should be listed on business bank accounts and loan files.

7. Use a Trusted EIN Verification Tool

Third-party tools and services can cross-reference EINs with government and commercial databases:

  • Examples: Middesk, Signzy, Deepvue, and other API providers.
  • Useful for banks, fintechs, payroll providers, and large enterprises that need to verify multiple EINs quickly.

These services typically charge a fee and are valuable for high-volume or automated needs.

Common EIN Red Flags

  • Incorrect number of digits or misplaced hyphen.
  • Prefix does not appear on the IRS list.
  • EIN not found in any government or business registry.
  • Mismatch between a business name and provided EIN.
  • The business hesitates or refuses to share IRS documentation

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Ashfaq is the Founder and CEO of Startup Consultancy, a passionate young entrepreneur dedicated to helping fellow entrepreneurs grow their businesses in successful markets like the United States, the United Kingdom, and beyond. With over a decade of experience in company formation, Ashfaq is committed to sharing his practical knowledge and expertise with aspiring entrepreneurs worldwide. Ready to simplify your business

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Support

Ashfaq is the Founder and CEO of Startup Consultancy, a passionate young entrepreneur dedicated to helping fellow entrepreneurs grow their businesses in successful markets like the United States, the United Kingdom, and beyond. With over a decade of experience in company formation, Ashfaq is committed to sharing his practical knowledge and expertise with aspiring entrepreneurs worldwide.