Finding an Employer's EIN When You Don't Have Your W2

How to find an employer's EIN without a W2

You can find your employer's Employer Identification Number (EIN) through the IRS website, your employer directly, or documents you already have at home. The IRS provides a free public search tool that shows EINs for most businesses. If that doesn't work, your pay stub, tax return, or bank records may already contain the number. Calling your employer's payroll or HR department is the fastest route if you need it when ready.

An EIN is a nine-digit number the IRS assigns to every business. It appears on your W2 in box b, but you don't need the W2 itself to find it — the number is tied to the business, not to you or your specific tax year.

Key Takeaways

The IRS EIN lookup tool at irs.gov is free and searchable by business name and address, and returns results for most registered employers.
Your pay stub, 1099, prior-year tax return, or bank deposit records may already show your employer's EIN without you needing to search.
Calling your employer's payroll department directly is often faster than online searches and takes less than five minutes.
If your employer is a sole proprietor or very small business, they may use their Social Security number instead of an EIN, which will not appear in the IRS lookup tool.

Using the IRS EIN lookup tool

The IRS maintains a searchable database of business EINs at irs.gov/ein. You enter the business name and the state where it operates, and the tool returns matching EINs. The search is free and does not require you to log in or create an account.

The tool works best when you have the exact legal business name. If you search for "John's Pizza" but the business is registered as "John's Pizza LLC" or "John's Pizzeria Inc.", the search may not return a result. Try variations of the name, or search by just the first word if the full name doesn't work. If your employer operates under a doing-business-as (DBA) name that differs from the legal name, searching for the DBA alone may not work — you may need the registered legal name instead.

The database includes most for-profit businesses, nonprofits, and government entities. It does not include sole proprietors who use their Social Security number instead of an EIN, which is common for very small or self-employed businesses.

Checking documents you already have

Before searching online, look through papers and digital records from your employer. Your pay stub often lists the employer's EIN in the header or footer. If you have direct deposit set up, your bank statement or the deposit details in your online banking portal may show the EIN. Any 1099 form you received from the same employer will have the EIN in box b.

If you filed a tax return in a prior year and reported income from this employer, your return copy will show the EIN. You can also check old W2s from previous years with the same employer — the EIN does not change year to year, so a W2 from 2022 will have the same number as one from 2024.

Tax documents like these are often the fastest source because you do not have to wait for a response or navigate a government website.

Contacting your employer directly

Call or email your employer's payroll or human resources department and ask for the company's EIN. You do not need to explain why you need it — this is public information and employers routinely provide it. Have your name, employee ID number (if you have one), and dates of employment ready so they can locate your record quickly.

If you no longer work there, you can still call and ask. Many employers keep payroll records for several years and can provide the EIN even after you have left. If the main number does not connect you to payroll, ask the receptionist for the payroll or HR department's direct line or email.

This method is often the fastest because a payroll employee can give you the answer in seconds, whereas online searches may take several minutes or return no result if the business name is registered differently than you remember it.

When your employer uses a Social Security number instead

Very small businesses, sole proprietors, and some self-employed people use their own Social Security number instead of explore for an EIN. If your employer falls into this category, the IRS EIN lookup tool will not return a result, and your employer may not have an EIN at all.

You can confirm this by calling your employer and asking directly. If they tell you they use their SSN for tax purposes, that is the number that should appear on your W2 in box b (though it will be masked as XXX-XX-XXXX for privacy). In this case, there is no separate EIN to find.

What to do if you still can't find it

If the IRS lookup tool returns no results, your documents do not show the number, and you cannot reach your employer, you have a few remaining options. Try searching the business name with variations — add "Inc.", "LLC", "Corp.", or remove any of these if you included them. Search by the city and state alone if you are unsure of the exact address.

If your employer is a nonprofit, you can search the IRS Tax Exempt Organization Search at irs.gov/tax-exempt-organizations, which lists nonprofits by name and location. If the business is a corporation, your state's Secretary of State office maintains a business registry that may list the EIN. Most states allow free online searches of their business databases by company name.

As a last resort, if you need the EIN for a specific tax or financial purpose, contact the IRS directly at 1-800-829-1040. Have your employer's name, address, and your employment dates ready. The IRS can confirm whether an EIN exists and provide it if you have a legitimate reason to know it.

Frequently Asked Questions

Can I find my employer's EIN if the business is closed?

Yes. Closed businesses remain in the IRS database, so the EIN lookup tool will still return a result if you search by the business name and state. If the business closed recently, try searching with the last known address. If you cannot find it online, the IRS can confirm a closed business's EIN by phone.

Do I need my employer's EIN to file my taxes?

No. You report your W2 income using the information on your W2 form itself. The IRS matches your return to your W2 using your Social Security number and the income amount, not the employer's EIN. You only need the EIN if you are contacting the IRS about a specific issue with that employer or if you are self-employed and need to set up your own business account.

Will the IRS lookup tool show my employer's personal information?

The tool shows the business name, address, and EIN only. It does not display the owner's name, phone number, or other personal details. The information returned is the same public data that appears on business licenses and tax filings.

What if my employer has multiple locations?

Most multi-location businesses have one EIN for the entire company. Search by the parent company name and headquarters state. If you search by a specific location's name or address and get no result, try the corporate name instead. Your pay stub should show the main company's EIN regardless of which location you work at.

Can I use an old W2 EIN if I'm filing taxes for a different year?

Yes. The EIN does not change from year to year unless the business restructures or changes ownership. If you have a W2 from 2022 with the employer's EIN, that same EIN applies to your 2023 and 2024 W2s from the same employer.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.