What Is an EIN?
An Employer Identification Number (EIN) is a 9-digit number issued by the IRS to identify a business for tax and legal purposes. It’s like a Social Security Number, but for a company.
Verifying a company’s EIN can:
- Confirm legitimacy
- Ensure correct reporting on tax forms (like 1099s)
- Support vendor or client onboarding
1. Ask the Company Directly
The fastest and most straightforward way to verify an EIN is by asking the business itself. Many companies will provide it on:
- W-9 forms
- Invoices
- Contracts
Tip: Businesses are often required to disclose their EIN when asked for official tax documentation.
2. Use IRS TIN Matching (for Authorized Users)
If you’re filing tax forms (like 1099s), you can use the IRS TIN Matching system—but you must be an authorized IRS e-file provider.
This tool helps match the business name with its EIN.
3. Check Public Records
EINs can sometimes be found in:
- SEC filings (for public companies)
- Nonprofit databases (like GuideStar)
- State business registries
These databases may display EINs on official business records.
4. Review Tax Filings (For Nonprofits)
If you’re verifying a nonprofit, their EIN is publicly available in:
- Form 990 tax returns
- Charity watchdog websites (e.g., GuideStar, Charity Navigator)
5. Check with the Business’s Bank or Legal Representative
In certain legal or financial transactions, a bank, accountant, or attorney may be authorized to verify or disclose a business’s EIN with proper permission.
Can I Call the IRS to Verify an EIN?
If you’re authorized, such as a third-party designee, you may contact the IRS Business & Specialty Tax Line at 1-800-829-4933. You’ll need:
- Legal reason for inquiry
- Proper identification or authorization
Final Thoughts
So, how do I verify a company’s EIN number?
The best route depends on your relationship with the business and your legal authority. You can start by asking the company directly or using official databases and IRS tools if you’re authorized.
If you’re doing business with a new vendor or client, verifying their EIN is a smart step to protect your operations and ensure compliance.
