How to File for an EIN Online (IRS Direct vs Third-Party 2026)

How to File for an EIN Online in 2026

An EIN is the Social Security number of your business, and getting one is one of the first things you’ll do after forming a company. Here’s the part nobody advertises: you can file for an EIN online directly with the IRS in about fifteen minutes, completely free, and walk away with the number the same day. This guide explains what an EIN is, who needs one, exactly how to apply online, the error codes that trip people up and how to fix them, why you should never pay for it, and what to do once you have it.

What an EIN Actually Is

An EIN (Employer Identification Number, also called a Federal Tax ID or FEIN) is a nine-digit number the IRS assigns to your business, written in the format XX-XXXXXXX. It identifies your company for tax purposes the same way your SSN identifies you personally (see the IRS EIN overview).

You’ll use your EIN for a lot of everyday business tasks:

• Opening a business bank account, which nearly every bank requires.
• Hiring employees and running payroll.
• Filing business tax returns and paying federal taxes.
• Applying for business licenses and permits.
• Building business credit separate from your personal credit.

Even when an EIN isn’t strictly required, having one lets you keep your SSN off vendor forms and business paperwork — good for privacy and identity protection.

Who Needs an EIN? (By Business Type)

You’re required to get an EIN if any of the situations below apply — and most owners get one even when it’s optional, because banks ask for it and it keeps your SSN private.

Forming an LLC first? Start with our step-by-step LLC formation guide — then come back here, because the IRS application asks about your entity.

First, the Most Important Tip: It’s Free

Before anything else, know this: the IRS issues EINs for free. You apply at IRS.gov and pay nothing. Plenty of websites charge $50 to $300 to “get your EIN for you,” and they’re simply filling out the same free form you can complete yourself in fifteen minutes. For a detailed side-by-side of the free IRS route versus paid services, see our free IRS guide vs. paid services cost breakdown. For the vast majority of owners, the IRS-direct route is the right call.

How to Apply for an EIN Online, Step by Step

The IRS online application — the EIN Assistant — is straightforward, but it has a few quirks worth knowing before you start.

1. Form your entity first. If you’re getting an EIN for an LLC or corporation, register the business with your state before you apply, since the IRS asks about it.
2. Gather the responsible party’s details. The “responsible party” is the person who controls the business. You’ll need their legal name and SSN or ITIN.
3. Choose your entity type. Sole proprietor, single-member LLC, multi-member LLC, corporation, partnership, and so on. Pick the one that matches your actual structure.
4. Open the IRS EIN Assistant. Answer why you’re applying, when you started, your accounting year, whether you’ll have employees, and your principal activity.
5. Submit and receive your EIN instantly. The number appears on screen the moment you finish.
6. Download the CP-575 confirmation letter. Save and print it. This is your official proof, and the IRS won’t easily re-issue it.

That’s the whole process. Most people finish in ten to fifteen minutes, and the EIN works immediately for opening a bank account.

Common EIN Online Errors (Reference Numbers) & How to Fix Them

The EIN Assistant sometimes ends with a “Reference number” error instead of your EIN. These are the ones people actually hit — and most are easy to resolve once you know what they mean.

Reference 101 is by far the most common, and it almost always traces back to a name-similarity flag — filing the paper SS-4 is the reliable fix.

IRS Direct vs. Third-Party Services

Since this is the question most people have, here’s the honest comparison.

The number itself is identical no matter who files. A paid service can make sense in a couple of narrow cases: you’re an international founder without an SSN, or you want a formation service to handle a bundle of setup tasks at once. For everyone else, the IRS-direct route gives you the same result for free, the same day. (Want the full price breakdown? See our free IRS vs. paid services guide.)

What If You Don’t Have an SSN?

The online application requires the responsible party to have an SSN or ITIN. If you’re an international founder without one, you can’t use the instant online tool — but you can still get an EIN. You complete IRS Form SS-4 and submit it by fax or mail (international applicants can also apply by phone). It takes longer — a few days by fax, several weeks by mail — but the EIN is still free. This is the one situation where a reputable service that specializes in international EINs can genuinely save you time and hassle.

What to Do After You Get Your EIN

Your EIN unlocks the next steps of setting up your business:

• Open a business bank account to keep business and personal finances separate, which protects your liability shield.
• Set up payroll if you’re hiring, and register for state employment taxes.
• Register for state tax accounts, like sales tax, if your business needs them.
• Apply for business licenses that require a federal tax ID.
• Store the CP-575 letter somewhere safe. Banks and agencies will ask for it, and replacing it is a hassle.

If you formed an LLC, now is also the time to finish the rest of your setup — an operating agreement, a registered agent, and your state’s annual filings.

Common Mistakes to Avoid

A few simple errors cause most EIN headaches.

• Paying a third party for something free. The IRS never charges for an EIN. Don’t pay $200 for a fifteen-minute free form unless you have a real reason.
• Applying before forming your entity. If your EIN is for an LLC or corporation, register the business with the state first.
• Choosing the wrong entity type. Match the application to your actual structure — fixing it later means dealing with the IRS.
• Applying more than once. The IRS limits you to one EIN per responsible party per day (that’s the Reference 114 error), and duplicate numbers cause confusion.
• Losing the CP-575 confirmation. Download and save it immediately, because getting a replacement is slow.

How the Responsible Party Works

The IRS wants to know who really controls the business, and that person is the “responsible party.” For a single-owner LLC, that’s you. For a multi-owner business, it’s the person who ultimately controls or manages funds and assets. The responsible party must be a real person with an SSN or ITIN, not another company. If control of the business changes later, you’re supposed to update the IRS using Form 8822-B.

When You Need a Brand-New EIN

An EIN sticks with your business for life in most cases, but a few changes force you to get a new one. According to the IRS, you generally need a new EIN if you:

• Change your entity type, such as converting a sole proprietorship into a corporation, or a partnership into a corporation.
• Form a brand-new business rather than continuing an existing one.
• Go through bankruptcy as a sole proprietor, or your partnership is taken over and run as a sole proprietorship.

You usually do not need a new EIN for everyday changes like a new business name, a new address, or adding a location — for those, you just update the IRS with Form 8822-B.

EIN vs. State Tax ID: You May Need Both

The EIN is your federal tax ID. Many businesses also need a separate state tax ID for state-level obligations like sales tax or payroll withholding. They’re issued by different agencies — your EIN comes from the IRS, your state tax ID from your state’s revenue department. Get your EIN first, since your state application will usually ask for it. If you sell taxable goods or have employees, plan to register for the state ID too.

Do Trusts, Estates, and Nonprofits Need an EIN?

Yes, more often than people expect. A nonprofit needs an EIN before applying for 501(c)(3) status. An estate of someone who has died needs its own EIN to handle the deceased person’s final financial affairs. Many trusts, especially irrevocable ones, need an EIN to file trust tax returns. A revocable living trust usually uses the grantor’s SSN while they’re alive, then gets its own EIN after they pass. If you’re administering an estate or trust, check whether a separate EIN is required before you open accounts in its name.

How to Look Up or Verify an EIN

If you’ve misplaced your EIN, check your CP-575 confirmation letter first — that’s the original record. It also appears on prior business tax returns and on documents from your bank. If you still can’t find it, call the IRS Business and Specialty Tax Line, verify your identity as an authorized person, and they’ll provide it. To verify another business’s EIN, you may be able to find it on public filings if the company is a nonprofit or a public company.

How to Close an EIN

You can’t truly “cancel” an EIN — the IRS keeps the number assigned to your business forever and never reuses it. But when you close your business, you can close the business account associated with the EIN by mailing the IRS a letter with the business’s legal name, the EIN, the address, and the reason for closing, plus a copy of your original EIN assignment notice if you have it. File any final returns first.

Frequently Asked Questions

How long does it take to get an EIN online?

Minutes. When you apply through the IRS EIN Assistant, the number is issued instantly on screen the moment you finish the application.

Does it cost anything to get an EIN?

No. The IRS issues EINs for free. Any site charging you is simply filling out the free application on your behalf.

What does EIN reference number 101 mean?

Reference 101 is a name conflict — your business name is too similar to an existing entity in IRS records, even one in another state. The fix is to file Form SS-4 by mail or fax so the IRS can review the application manually.

Do I need an EIN for a single-member LLC?

Not always — you can use your SSN if you have no employees — but most owners get an EIN anyway for banking and to keep their SSN private. It’s free, so it’s usually worth it.

Can I get an EIN without an SSN?

Yes. International founders without an SSN or ITIN can’t use the instant online tool, but can get an EIN by submitting Form SS-4 by fax or mail. It’s still free; it just takes longer.

Can I get an EIN before forming my LLC?

It’s best to form the business with your state first, then apply, since the IRS application asks about your entity. Applying after formation keeps everything consistent.

I lost my EIN. How do I find it?

Check your CP-575 confirmation letter, a past tax return, or your bank, which has it on file. You can also call the IRS Business and Specialty Tax Line to retrieve it.

The Bottom Line

Filing for an EIN online is fast, free, and one of the easiest steps in setting up a business. Form your entity first, gather the responsible party’s details, open the IRS EIN Assistant, and finish the application in one sitting to get your number instantly. If you hit a Reference 101 error, file the paper SS-4. Skip the services that charge for it unless you’re an international founder without an SSN. Save your CP-575 letter, then use your EIN to open a bank account, run payroll, and keep your personal SSN off business paperwork. Fifteen minutes now sets your business up properly for everything that follows.

ClearLegalTips

ClearLegalTips is an independent publisher of plain-English legal guides, free document templates, and cost calculators for common U.S. legal tasks. Every article is reviewed by founder and editor Fatih Öztürk and fact-checked against official sources: statutes, court fee schedules, and government filing pages. Not a law firm; nothing here is legal advice.