How to Get an EIN Free in 10 Minutes (and Who Actually Needs One)

An EIN — Employer Identification Number — is your business's Social Security number: nine digits the IRS assigns for tax identification, required for opening business bank accounts, hiring employees, and filing entity tax returns. Two facts should frame everything else: the IRS issues EINs completely free, and the online application takes about ten minutes with instant issuance. Every paid "EIN filing service" charging $50–$300 is reselling a free government form to people who didn't know — which makes this one of the few personal-finance topics where the entire buyer's guide is "go directly to the source."

Who actually needs one

The "optional but get it anyway" rows deserve the emphasis: an EIN costs nothing, takes minutes, and every W-9 you hand a client without one exposes your personal SSN instead. It's also step zero of separating business identity from personal — banks want it, and business credit files are built on it.

The application, step by step

1. Go directly to IRS.gov — search "apply for EIN online" and confirm the domain is irs.gov. The paid lookalikes buy ads against exactly this search.
2. Apply during operating hours — the online assistant runs Monday–Friday, roughly 7am–10pm Eastern (it's a legacy system with business hours, genuinely).
3. Have the responsible party's SSN or ITIN ready. The responsible party is the human who controls the entity — an owner, not a registered agent or accountant. The IRS issues one EIN per responsible party per day, which only matters if you're forming multiple entities.
4. Complete in one sitting — the session times out and doesn't save. Fifteen minutes of uninterrupted attention.
5. Download the CP 575 confirmation letter immediately. It's issued once; banks ask for it when opening accounts, and replacing it means requesting a substitute letter (147C) by phone later.

No SSN or ITIN? Foreign owners of U.S. entities can't use the online tool but get EINs the traditional way: Form SS-4 by fax or mail (fax turnaround runs about a week; mail longer), with "Foreign" on line 7b where the SSN would go. Slower, equally free.

If the online application won't complete

A handful of specific situations reliably stall or reject the online EIN application, and each has a known workaround:

• "Reference number 101" or similar error — usually means the IRS system detected a name conflict or needs manual review; this doesn't mean the application failed, but it does mean it can't complete online. Call the IRS Business & Specialty Tax Line to finish it by phone.
• Applying for a second entity the same day — the one-EIN-per-responsible-party-per-day limit will block it outright. Wait until the next business day, or designate a different responsible party for the second entity if that's accurate to your structure.
• Session timeout — the online tool doesn't save partial progress, so a timeout means starting completely over. Have every required field's answer ready before starting (entity name, structure, responsible party's SSN/ITIN, business address, reason for applying) to finish inside one sitting.
• No SSN or ITIN for the responsible party — the online tool isn't available at all; this routes directly to the Form SS-4 fax/mail process described below, and trying the online tool first just wastes time.

After the number arrives

Three immediate uses and one warning. Uses: open the business checking account (the EIN + formation documents + ID are the whole checklist), put the EIN on client W-9s instead of your SSN, and — if you're building toward financing — let it anchor the business credit profile that starts accruing under the entity. The warning: the EIN creates tax identity, not liability protection or credit separation by itself — a sole proprietor with an EIN is still personally liable for everything, and lenders will still personally guarantee a young entity's debts. The number is necessary plumbing, not magic.

Frequently Asked

Questions readers ask

01Is there any reason to use a paid EIN service?+

Almost none — the IRS process is free, instant online, and simpler than most paid intermediaries' own forms. The narrow exception is foreign founders who want a service to manage the SS-4 fax process and follow-ups; even then, many registered-agent packages include it. For anyone with an SSN/ITIN, paying is pure friction-tax.

02Do I need a new EIN if my business changes?+

Structure changes usually yes, cosmetic changes no: converting sole proprietorship → LLC or LLC → corporation requires a new EIN, as does a new partnership. Changing the business name, address, or adding a DBA doesn't — you notify the IRS rather than reapply. Ownership percentage shifts within the same entity generally keep the same number.

03Can I look up my EIN if I've lost it?+

Check the CP 575 letter, prior tax returns, bank account paperwork, or old W-9s first. Failing those, call the IRS Business & Specialty Tax Line and, after identity verification as an authorized person, request a 147C verification letter. There's no public EIN lookup for your own number — another reason to archive the confirmation letter on day one.

04Does getting an EIN mean I owe new taxes?+

No — the EIN is an identifier, not a tax election. Your entity's tax treatment (sole prop schedule C, partnership 1065, S-corp election, etc.) is determined separately. What the EIN does create is the expectation of matching filings: if the IRS issues an employer number and never sees payroll forms, expect a letter — so mind which boxes you check about expected employees on the application.