You need an EIN, and you need it today. Maybe a vendor wants a W-9, your bank is asking for a tax ID, or you misplaced the IRS letter from three years ago.
Here's the honest picture. There is no single public database where you can type any company name and get its Employer Identification Number. Some EINs are public, most are not, and every business owner has an official way to recover their own.
This guide shows you which route fits your situation, step by step, using official sources. You'll also learn how to spot unreliable lookup sites before they waste your time.
Can You Look Up an EIN Online?
You can look up some EINs, but not all. Nonprofit EINs are public through the IRS Tax Exempt Organization Search. Public companies often list their EIN on SEC filings. For private businesses, the EIN is confidential taxpayer information, so you either ask the company directly (usually through a Form W-9) or, if it's your own EIN, recover it through IRS channels.
Fast routes by situation:
- Your own EIN: Check the original IRS notice, your bank records, and past tax returns, then call the IRS if those fail.
- A nonprofit's EIN: Use the IRS Tax Exempt Organization Search.
- A public company's EIN: Check the cover page of its annual report on SEC EDGAR.
- A private vendor or client's EIN: Request a completed Form W-9.
What Is an EIN?
An Employer Identification Number (EIN) is a nine-digit number the Internal Revenue Service assigns to identify a business entity for federal tax purposes. It's written as XX-XXXXXXX, two digits, a hyphen, then seven digits.
Think of it as a Social Security number for a business. It appears on payroll filings, business tax returns, bank account applications, and the forms you send to contractors.
You'll see the same number called by several names: EIN, FEIN (Federal Employer Identification Number), federal tax ID, and Tax ID Number. They all refer to the same thing. For a closer look at how the IRS describes the number, the agency's official EIN guidance is the best starting point.
What Is an EIN Used For?
An EIN does more than most new owners expect. Typical uses include:
- Opening a business bank account
- Filing federal business tax returns
- Hiring employees and filing payroll taxes
- Paying independent contractors and issuing Form 1099-NEC
- Applying for business licenses and permits
- Registering with state tax agencies
- Establishing business credit
Not every business needs one. A sole proprietor with no employees can often use a Social Security number instead. Most LLCs, corporations, partnerships, and nonprofits do need an EIN.
Is an EIN the Same as a Tax ID?
Yes, with a small catch. An EIN is one kind of federal tax identification number. "Tax ID" or "Taxpayer Identification Number" (TIN) is the broader umbrella term, and it covers several different numbers.
EIN (Employer Identification Number)
Who uses it: Businesses, estates, trusts, nonprofits
Format: 9 digits (XX-XXXXXXX)
SSN (Social Security Number)
Who uses it: Individuals eligible for work in the US
Format: 9 digits (XXX-XX-XXXX)
ITIN (Individual Taxpayer Identification Number)
Who uses it: Individuals who need a TIN but can’t get an SSN
Format: 9 digits, starts with 9
ATIN / PTIN
Who uses it: Adoption and tax preparer use
Format: Specialized
So every EIN is a tax ID, but not every tax ID is an EIN. If a form asks for a "TIN," a business gives its EIN and an individual gives an SSN or ITIN.
If you operate across borders, our guide on cross-border tax compliance for freelancers explains how these identifiers show up in real filing situations. Readers from Pakistan may also find it useful to compare this with the National Tax Number (NTN), which plays a similar role locally.
What Is the Difference Between EIN and FEIN?
There is no practical difference. FEIN simply stresses that the number is federal. Banks, state agencies, and payroll providers use the terms interchangeably, and the number itself is identical.
A different distinction does matter: your federal EIN versus a state employer account number. States issue their own numbers for state payroll tax and unemployment insurance. Those are separate registrations. Having your EIN doesn't mean you're registered with your state, and the reverse is also true.
How to Find Your Own EIN (The Reliable Order of Operations)
If the number belongs to your business, you have the best odds of recovering it. The IRS recommends a set order of checks before you contact them, and following it usually saves a phone call. The agency explains these steps on its page for lost or misplaced EINs.
Step 1: Find the Original IRS Notice
When the IRS assigned your EIN, it sent a confirmation notice, typically CP 575. If you applied online, you may have downloaded a confirmation PDF at the end of the session.
Search these places:
- Your email inbox for "EIN" or "IRS"
- Your downloads folder
- Paper files from when you formed the business
- Documents your accountant or formation service holds
Step 2: Check Bank and Financial Records
Your bank asked for your EIN when you opened the business account. It's often printed on account opening documents, loan applications, and merchant processor agreements. Ask your banker, who can usually read it from your file after verifying your identity.
Step 3: Look at Past Tax Filings
The EIN appears on every federal business return and on most payroll forms. Dig out:
- Previous federal tax returns (Form 1120, 1065, or Schedule C if you used an EIN)
- Form 941 payroll filings
- Form W-2s you issued to employees
- Form 1099-NEC copies you sent to contractors
If you need to gather these quickly, our walkthrough on how to combine tax documents into one PDF makes it easier to keep records in one place.
Step 4: Check Licenses and State Records
Business licenses, permits, and state tax registrations often list the EIN. So do loan paperwork and insurance applications.
Step 5: Contact the IRS
If every other route fails, call the IRS Business and Specialty Tax Line at 800-829-4933. An authorized person, such as the owner, officer, or other responsible party, must verify identity. The IRS representative can confirm the number, and you can request a confirmation letter.
Keep your business legal name, address, entity type, and details on the original application ready. Those details help the agent locate your record faster.
Where to Find an EIN on Business Documents
People often search for the same number in the wrong places. This table shows where it usually sits.
Form W-2
Where the EIN appears: Box b (“Employer identification number”)
Form W-9
Where the EIN appears: Part I, in the TIN section (the business writes it there)
Form 1099-NEC
Where the EIN appears: Payer’s TIN field
Federal business tax return
Where the EIN appears: Top of the form, near the business name
IRS notice CP 575
Where the EIN appears: Upper area of the notice
Business bank statement or account agreement
Where the EIN appears: Often on account opening paperwork
Form 941
Where the EIN appears: Top right, below the business name
A practical tip from experience: if you're a freelancer or contractor receiving a 1099, the number printed there is the payer's TIN. It is not yours, so don't confuse it with your own tax ID.
How to Verify an EIN Through the IRS
Verification answers a different question than lookup. Lookup asks "what is the number?" Verification asks "does this number belong to this business?"
The IRS does not offer a public tool where you enter someone's EIN and see the business name. Here are the legitimate verification paths instead.
For Your Own EIN
Your confirmation documents are the proof. The IRS may provide a downloadable digital CP 575 EIN verification notice through eligible Business Tax Accounts, which can serve in place of the older CP 575 notices and Letter 147C in many situations. Eligibility and availability can change, so check the IRS EIN guidance for current details.
Other confirmation options:
- Letter 147C: An IRS letter confirming your EIN, requested through the Business and Specialty Tax Line.
- Entity transcript: Shows entity information tied to your EIN.
For Someone Else's EIN (Vendor, Client, Partner)
You can't confirm another business's EIN with the IRS directly. Practical alternatives include:
- Request a W-9. This is the standard method. The business signs it and certifies the number.
- Use IRS TIN Matching if you're an eligible payer who files information returns. Matching checks that a name and TIN combination agrees with IRS records.
- Cross-check with other records. Compare the business name against state business registration records on the Secretary of State website.
EIN Lookup vs. EIN Verification: Quick Comparison
Question answered
Lookup: What is the number?
Verification: Is this number valid for this entity?
Public for private businesses?
Lookup: No
Verification: Limited, through W-9 and TIN Matching
Public for nonprofits?
Lookup: Yes, via TEOS
Verification: Yes, via TEOS
Official source
Lookup: IRS, SEC (public companies)
Verification: IRS
How to Search Public Nonprofit EIN Records
Tax-exempt organizations are the exception to EIN secrecy. Federal law (Internal Revenue Code Section 6104) requires many exempt organizations to make certain filings, such as Form 990, available for public inspection. That's why nonprofit EINs are findable.
Using the IRS Tax Exempt Organization Search
The IRS Tax Exempt Organization Search (TEOS) lets you search by organization name or EIN. It covers records such as:
- Form 990 series returns (990, 990-EZ, 990-PF, 990-N)
- Determination letters
- Publication 78 data (organizations eligible to receive tax-deductible contributions)
- Revocation records
How to use it effectively:
- Open TEOS and enter the organization's name, or a portion of it.
- Add the city and state to narrow results, since many charities share similar names.
- Open the matching record and confirm the location matches.
- Note the EIN displayed on the record.
Other Nonprofit Research Tools
Two third-party resources are widely used for research:
- ProPublica Nonprofit Explorer shows searchable filings and financial details.
- Candid provides nonprofit profiles and research.
Treat these as research aids. For anything official, such as confirming a charity's deductibility status, return to the IRS source.
How to Find a Public Company's EIN
Publicly traded companies file regulatory reports with the Securities and Exchange Commission. Many of these reports, such as the annual Form 10-K, include the company's IRS Employer Identification Number on the cover page.
Here's the approach:
- Go to the SEC EDGAR company search.
- Search by company name or ticker.
- Open the most recent 10-K filing.
- Check the cover page for "IRS Employer Identification No."
One caveat: EDGAR is not a universal EIN directory. It only covers companies that file with the SEC, which excludes most small and private businesses.
How to Find a Private Business's EIN
This is where most searches stall. Private business EINs are protected taxpayer information, and no free site can legitimately give you a complete database of them.
The reliable approach is to ask:
- For payments you'll make: Send the business a Form W-9 before issuing payment. It's routine, and reputable vendors expect it.
- For vendor onboarding: Make W-9 collection part of your standard checklist.
- For identity checks: Combine the W-9 with state business registration lookups on the relevant Secretary of State site.
If you're preparing contractor payments, our guide on the 1099 reporting threshold for 2026 explains when you must collect that information. The comparison in W-2 vs 1099 tax calculation is also worth reading if you're classifying workers.
Are EIN Numbers Public Information?
Not generally. An EIN is considered taxpayer information, and the IRS doesn't publish a searchable list of all business EINs. A few categories are different:
- Tax-exempt organizations: Public via TEOS and their Form 990 filings.
- Public companies: Often disclosed in SEC filings.
- Federal contractors: Registered through SAM.gov, though that system uses its own identifier (more below).
Some businesses also print their EIN on invoices, websites, or public filings voluntarily. That's their choice.
Is It Safe to Share Your Company's EIN?
Sharing it with legitimate parties, such as your bank, payroll provider, accountant, or a client requesting a W-9, is normal business practice. Still, treat it as sensitive:
- Don't post it on public social media or open web pages.
- Send W-9s through secure channels rather than plain email when possible.
- Be cautious when anyone asks for it without a clear reason.
- Report suspected misuse to the IRS.
An EIN alone doesn't unlock your bank account, but combined with other details it can support identity fraud against a business.
EIN vs TIN vs SSN vs ITIN: What's the Difference?
This is one of the most confused topics in business tax. Here's the breakdown.
EIN: Identifies businesses and other entities such as trusts and estates. Issued by the IRS.
TIN: The general category name. Includes EIN, SSN, ITIN, and others.
SSN: Issued by the Social Security Administration to individuals. Used for individual tax filing and employment.
ITIN: Issued by the IRS to individuals who must file US taxes but aren't eligible for an SSN.
A sole proprietor is a good example of how these overlap. They may use their SSN as their TIN, or they may obtain an EIN to keep their SSN off documents. Many freelancers choose the second route for privacy.
For more on how self-employed taxpayers handle this, see our self-employment tax guide, and use the US self-employment tax calculator to estimate what you'll owe.
Does Every LLC Have Its Own EIN?
No, not automatically. An LLC must apply for an EIN. Some single-member LLCs have no employees and no excise tax obligations, so they can use the owner's SSN for certain federal purposes. Even then, many banks and clients require an EIN, so most LLC owners get one.
A multi-member LLC is generally treated as a partnership for tax purposes and needs an EIN. An LLC that elects corporate taxation also needs one.
Also worth knowing: two different companies cannot share the same EIN. Each number is unique to one entity.
Can a Foreign Business Owner Get a US EIN?
Yes, in many cases. Owners based outside the United States can obtain an EIN, but the process differs from the standard online application.
Here's what the process generally looks like:
- The online application is built for applicants with a US legal residence or principal business location. International applicants without one generally can't use it.
- Eligible international applicants can typically apply by phone, fax, or mail using Form SS-4, following the instructions on the IRS Form SS-4 page.
- The IRS provides a dedicated phone line for international applicants, listed in the SS-4 instructions.
- A foreign owner without an SSN or ITIN typically writes "Foreign" or "N/A" where the form asks for one, following the current instructions.
The details are exact, and mistakes cause delays. Always read the current SS-4 instructions before submitting.
Practical Advice for Non-US Owners
If you're a freelancer or entrepreneur outside the US, such as in Pakistan, India, the UK, or Canada, getting this right matters for banking, payment processors, and tax filing. Our guide on US tax residency in 2026 helps you understand how residency affects your obligations.
If your situation involves structuring a US entity from abroad, it's worth getting a professional opinion. Firms such as Bluemark Advisory offer advisory resources aimed at business owners handling cross-border setups. Whoever you pick, ask for an engagement scope in writing and confirm they won't charge you for what the IRS provides free.
How to Apply for a New EIN (If Recovery Isn't Possible)
Recovery and new application are different paths, and mixing them up causes real problems. If you already have an EIN, don't apply for another one. Duplicate EINs for the same entity create confusion and may trigger IRS correspondence.
Apply for a new EIN only when:
- You've formed a new entity that doesn't have one
- Your business structure changed in a way that requires a new number (for example, a sole proprietorship becoming a corporation)
- You've confirmed through IRS channels that no EIN exists for your entity
Key Rules to Know
- It's free. Applying directly through IRS.gov costs nothing. Third-party sites that charge a fee are selling convenience, not the number itself.
- One EIN per responsible party per day. The IRS limits issuance by responsible party per day across all application channels.
- Use accurate details. The business legal name, entity type, and responsible party information must match your records.
For the official application procedure, start at the IRS page on how to apply for an EIN.
Keep Your Information Current
If your responsible party changes, you generally need to report it within 60 days using Form 8822-B. Outdated records can cause problems when you try to verify your identity with the IRS later, which is exactly when you'll need that call to go smoothly.
Is an EIN the Same as a UEI?
No. This confuses many people who register for government contracts.
- EIN: A tax identification number issued by the IRS.
- UEI (Unique Entity ID): An identifier used for federal contracting and grants, assigned through SAM.gov.
Registering in SAM.gov requires your business information, and your EIN (called a TIN in that system) is part of what you provide. But the UEI itself is a different number for a different purpose.
How to Use an EIN Finder Tool Responsibly
An online EIN finder is helpful when it does the honest things: organizes official sources, validates format, and points you to the right record. You can explore other helpful utilities on our tools hub.
Here's what a trustworthy EIN finder should and shouldn't do.
A good tool will:
- Help you search nonprofit records by organization name
- Link you to official IRS resources
- Check whether a number follows the nine-digit format
- Explain how to recover a private business's EIN
- Clarify the difference between EIN, TIN, SSN, and ITIN
A good tool will not:
- Claim to access a complete database of every US business EIN
- Charge you for a number the IRS gives free
- Ask for your Social Security number or bank login
- Promise instant results for private companies
What Format Validation Does and Doesn't Prove
A format check only tells you that a number has nine digits in the expected pattern. It does not prove the EIN is real, assigned, or tied to a specific business. Treat it as a typo catcher, not a verification step.
Common EIN Lookup Problems (and How to Solve Them)
Problem: "The website says it found the EIN, but I don't trust it."
Cross-check against an official source. If it's a nonprofit, confirm in TEOS. If it's a public company, confirm on an SEC filing. If it's a private business, ask for a W-9.
Problem: "I can't find my EIN, and I never got a letter."
Check email and online application downloads first, then bank and tax records. If those fail, call the IRS Business and Specialty Tax Line at 800-829-4933 with your identity details ready.
Problem: "The IRS agent won't give me the number."
The caller must be an authorized person, such as the owner or other responsible party. If your records list a former responsible party, update them through Form 8822-B and try again.
Problem: "Two vendors gave me the same EIN."
Two different entities can't legitimately share an EIN. This could be a typo, a related entity using a parent's number, or fraud. Ask for a fresh W-9 and verify the business name against state records.
Problem: "The EIN doesn't match the business name."
A mismatch can reflect a name change, a DBA ("doing business as") versus legal name confusion, or an error. Always use the legal name on the W-9, not the brand name.
Problem: "I'm outside the US and the online form won't work."
The online application isn't available to international applicants without a US residence or principal business location. Use the Form SS-4 methods the IRS describes for those cases.
Red Flags: How to Identify a Legitimate Business Tax ID
When you receive an EIN from a new vendor or partner, a few checks help separate genuine from questionable:
- Format: Nine digits, typically written XX-XXXXXXX.
- Source: It comes on a signed W-9, not just typed into an email.
- Name match: The legal name on the W-9 matches the registered business name on state records.
- Consistency: The same number appears across their invoices, contracts, and forms.
- Behavior: Reputable businesses supply tax information without drama. Be cautious if someone refuses to provide a W-9 but wants payment.
Also be aware that tax-related scams do circulate. The IRS audit triggers guide on our site explains what real IRS attention looks like. A real IRS contact generally arrives by mail first, and the agency doesn't demand payment by gift card.
Real-World Examples
Example 1: The freelancer who lost their EIN.
Priya, a designer in Lahore, formed a US LLC three years ago. She needs the EIN to open a payment account but can't find the letter. She searches her email for "IRS," finds the original confirmation PDF in an old attachment, and has the number in ten minutes. Without it, her next step would have been calling the IRS line with her LLC details.
Example 2: The small business verifying a vendor.
Marcus runs a landscaping company and hires a subcontractor. Instead of searching for the subcontractor's EIN online, he sends a Form W-9 before the first payment. He cross-checks the legal name on the form against the state business registry and files it with his records. At year-end, he has what he needs for the 1099.
Example 3: The donor checking a charity.
Amina wants to donate to a local charity and wants to confirm it's legitimate. She searches the organization's name in TEOS, confirms the city and state match, and reviews whether it appears in Publication 78 data. She then reads recent Form 990 information before donating.
EIN and Your Wider Tax Picture
An EIN isn't an isolated number. It connects to your entire business tax life, and understanding that helps you avoid mistakes later.
- Income reporting: Learn what counts as taxable income in the US.
- Side income: If you're building a part-time business, our side hustle taxes guide covers common obligations.
- Business taxes: The business income tax calculator guide helps you estimate liabilities, and the US corporate income tax overview explains how corporations are taxed.
- State obligations: Your EIN is federal, but you may have separate state requirements. Use the US state income tax calculator and read our state income tax 2026 overview.
- Record keeping: Our freelance tax checklist helps you keep the paperwork that proves your EIN and income.
- Terminology: If terms like TIN, 1099, or W-9 still feel fuzzy, the essential tax terms glossary is a quick reference.
Anti-money-laundering and transparency rules also touch business owners. The Financial Crimes Enforcement Network (FinCEN) publishes official information on business ownership reporting and compliance. Because those rules have changed several times, check the official site for the current position rather than relying on older articles.
Best Practices for Managing Your EIN
Once you've found your number, make sure you never have to hunt for it again.
- Store the original IRS confirmation in at least two places, such as a secure cloud folder and a physical file.
- Create a one-page business ID sheet with your legal name, EIN, formation date, entity type, and responsible party.
- Give your accountant a copy so there's a backup that isn't in your inbox.
- Update the IRS promptly when your responsible party or address changes.
- Review it annually during tax preparation to confirm it matches what appears on your bank records and filings.
Small habits like these turn a stressful lookup into a ten-second task.
Frequently Asked Questions
What is an EIN number used for?
An EIN identifies a business for federal tax purposes. Businesses use it to file tax returns, open bank accounts, hire employees, pay contractors, and apply for licenses.
Is there a free EIN lookup website?
Official free sources exist for specific cases: the IRS Tax Exempt Organization Search for nonprofits and SEC EDGAR for public companies. No official free site lists every private business's EIN.
Can anyone look up a business EIN?
Not for most private businesses. Nonprofit EINs are public, and public companies often disclose theirs in SEC filings. For private companies, ask the business to complete a Form W-9.
How do I find my own EIN?
Check your original IRS confirmation notice, bank account paperwork, past tax returns, and business licenses. If you still can't find it, an authorized person can call the IRS Business and Specialty Tax Line at 800-829-4933.
Can I find an EIN using a company address or owner's name?
Generally no. There's no official public search that returns an EIN from an address or owner name. Nonprofits are the main exception, since TEOS lets you search by organization name.
How many digits are in an EIN?
Nine digits, usually written as XX-XXXXXXX.
Can two companies have the same EIN?
No. Each EIN belongs to one entity. If two businesses show the same number, treat it as an error or red flag and verify.
Does an EIN cost money?
No. Applying directly through IRS.gov is free. Be wary of sites that charge for it.
Can I verify an EIN without contacting the IRS?
You can confirm nonprofit EINs through TEOS and public-company EINs through SEC filings. For private businesses, a signed W-9 plus a state registration check is the practical route.
What should I do if my EIN cannot be found?
Work through the order: original notice, bank records, tax returns, licenses, then call the IRS. Don't apply for a second EIN unless the IRS confirms none exists for your entity.
Conclusion:
Finding an EIN comes down to matching the right source to your situation. Nonprofits go through the IRS Tax Exempt Organization Search, public companies through SEC filings, and private businesses through a signed W-9. Your own number can be recovered through your records or an IRS call. Any site that promises a complete database of every business EIN is promising something no legitimate third party can deliver.
Do these three things today:
- Gather your EIN documents into one secure folder, and note the number on a business ID sheet.
- If you collect payments or pay vendors, add a W-9 request to your onboarding checklist.
- Bookmark the official IRS pages used throughout this guide so you always start from the source.
If you're managing taxes as a freelancer, small business owner, or cross-border entrepreneur, explore the rest of our free tax tools and browse our tax guides to keep your numbers, deadlines, and records in order.