EIN Number Lookup: How to Find Any Business's EIN

An Employer Identification Number (EIN) is the nine-digit federal tax ID the IRS assigns to businesses. You might need to find one to verify a vendor, complete a 1099, apply for credit, or confirm a company is legitimate before signing a contract. The catch: there's no single free, public database where you can type in a company name and instantly get its EIN. But there are several reliable, mostly free ways to find one.

This EIN number lookup guide walks through exactly how to look up an EIN, whether it's your own business or someone else's.

How Do I Look Up an EIN Number?

The short answer: the method depends on whose EIN you need and whether the business is public, private, or a nonprofit.

• Your own business? Check your IRS confirmation letter, past tax returns, or call the IRS directly.
• A public company? Use the free SEC EDGAR system.
• A nonprofit? Use the IRS Tax Exempt Organization Search or ProPublica.
• A private company? Check business documents you already have, state registries, or a paid data provider.

There is no free, universal "type any name, get any EIN" lookup tool. Anyone claiming otherwise is usually selling paid data. Below are the legitimate paths.

Looking Up Your Own EIN

If you're trying to find the EIN for a business you own or manage, start here before anything else. It's the fastest route.

Check your records first

Your EIN appears on more documents than you'd expect:

• The IRS CP 575 confirmation letter you received when the EIN was first issued.
• Any previously filed business tax return.
• Your business bank account paperwork (banks require an EIN to open a business account).
• Old payroll records, 1099s, or business licenses.

If you're setting up finances for a new company, our guide on how to open a business bank account covers what documents you'll need alongside your EIN.

Call the IRS

If you can't find your number anywhere, call the IRS Business & Specialty Tax Line at 800-829-4933, open Monday through Friday, 7 a.m. to 7 p.m. local time. An agent will verify your identity and, if you're an authorized person (such as an owner or corporate officer), give you the EIN over the phone.

For a full walkthrough of recovering a lost number, see our dedicated guide on how to find your EIN.

How to Find Another Business's EIN

Looking up someone else's EIN is harder because the IRS treats it as sensitive information. Your approach depends on the type of company.

Public companies: SEC EDGAR

Publicly traded companies must file financial reports with the Securities and Exchange Commission, and those filings include the EIN. This is one of the most reliable free EIN lookup methods available.

1. Go to the SEC's EDGAR company search.
2. Enter the company's legal name, stock ticker symbol, or CIK (the SEC's unique filer ID).
3. Open a recent 10-K (annual report) or 10-Q (quarterly report).
4. Look near the top of the first page for "I.R.S. Employer Identification No."

EDGAR is completely free and also gives you financial statements, executive details, and more.

Nonprofits: IRS and ProPublica

Nonprofits file a Form 990 every year, and their EIN is public. Two free tools make this easy:

• IRS Tax Exempt Organization Search - the official source.
• ProPublica Nonprofit Explorer - a searchable database of 990 filings.

Just search the organization's name and the EIN appears in the results. If you're forming one yourself, our guide on how to start a nonprofit explains the full setup process.

Private companies: the harder cases

Most small and mid-sized businesses are private, so their EIN isn't published anywhere free. Your options:

• Check documents you already hold. If you've done business with the company, look at invoices, contracts, W-9 forms, or 1099s they've sent you. A W-9 lists the taxpayer ID directly.
• Ask the company. For a legitimate business reason, calling their accounting department and asking is often the fastest route. Most companies share it without hesitation for tax-reporting purposes.
• Search state business registries. Some Secretary of State business-entity searches include tax IDs, though many don't list the EIN specifically.
• Use a paid data provider. Services like Dun & Bradstreet and commercial credit bureaus maintain business records. If you're already tracking a company's credit, note that an EIN is separate from a DUNS number, which D&B assigns.

Free vs. Paid EIN Lookup Tools

You'll see plenty of websites advertising "instant EIN lookup." Here's the honest breakdown:

For most needs, one of the free routes works. Paid tools mainly make sense if you're verifying many businesses at once or need private-company data you can't otherwise access.

Why You Might Need an EIN Lookup

Common reasons to run an EIN search include:

• Filing 1099s for contractors or vendors at tax time.
• Verifying a business before a partnership, loan, or large purchase.
• Applying for business credit or opening accounts.
• Confirming a company exists and is registered.

If you're still in the early stages of forming your own company, understanding what an EIN number is and how to get an EIN number matters more than looking up someone else's. And if you're building the business itself, our overview of how to start a business ties these pieces together, from choosing a structure to registering with the IRS.

A Quick Word on Privacy and Legitimacy

An EIN isn't as sensitive as a Social Security number, but it's still business-identifying information. Use it only for legitimate purposes, tax reporting, verification, or credit applications. Avoid sketchy "lookup" sites that ask for payment before showing any results, and never pay to retrieve your own EIN, since the IRS provides it for free.

Conclusion

There's no magic universal database for EIN lookups, but between the IRS, SEC EDGAR, nonprofit search tools, and the documents already in your files, you can almost always find the number you need at no cost. Start with the free method that matches the business type, and only reach for a paid service if you're doing bulk verification or chasing private-company data.

Need to get set up on the other side of the process? Learn how to get an EIN number for your own business, it's free and takes minutes online.

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Sources:

• IRS - Employer Identification Number
• IRS - Telephone Assistance Contacts for Business Customers
• IRS - Lost or Misplaced Your EIN?