What Is a Business Tax ID Number?
A business tax ID number or EIN is a nine-digit number issued by the IRS to businesses for tax reporting purposes. It’s similar to a Social Security Number, but for a business entity.
When You Can Look Up a Business EIN
Here are legitimate ways you may find a business’s EIN:
1. SEC Filings
If the company is publicly traded, its EIN may appear in SEC filings, which are available through SEC’s EDGAR database.
2. Nonprofit Organizations
Nonprofits are required to disclose their EINs on publicly available tax documents (Form 990). You can find this information through services like GuideStar or the IRS Exempt Organizations Search.
3. Business Credit Reports
Some credit bureaus and data providers (like Dun & Bradstreet or LexisNexis) may include EINs in business credit reports—for a fee.
4. State Government Websites
Some states include EINs in their business registration databases. Search the Secretary of State’s website where the business is registered.
What You Can’t Do
You cannot call the IRS or use a public federal tool to look up a private business’s EIN unless you are an authorized party. The IRS protects EINs similarly to personal tax information.
What If You Need Your Own Business EIN?
If you’ve lost your own EIN or never received one:
- Check previous tax documents
- Look at IRS notice CP 575 (EIN assignment letter)
- Call the IRS Business Line: 1-800-829-4933
- Or apply online through the IRS EIN application portal
Conclusion
So, can you look up a business tax ID number? Yes—for public companies, nonprofits, or via state databases. For private companies, it’s much harder unless you’re authorized. Always use legal and ethical methods when seeking this information.
