EIN Application: A Beginner's Guide to Getting Started (2026)

If you've been told you need an EIN application but have no idea where to start, take a deep breath. You're in the right place. An EIN (Employer Identification Number) is something the IRS assigns to businesses, and getting an ein is actually one of the simplest things you'll do as a new business owner. Whether you need it for taxes, hiring, or generating pay stubs for employees, this guide walks you through the ein number application process, step by step, in plain English.

Key Takeaways

• An EIN application is completely free through the IRS website; never pay a third-party service
• Apply online to get your EIN number the same day (available Monday through Friday, 7 a.m. to 10 p.m. ET)
• Having an EIN protects your Social Security number when dealing with clients and banks
• Gather your business details before starting because the IRS online system can't save your progress

What Is an EIN Application?

An EIN application is a free form you submit to the IRS to get a unique nine-digit number for your business. Think of it like a Social Security number, but for your business instead of you personally. You might also hear it called a Federal Tax ID or FEIN; they all mean the same thing.

The official ein form is called Form SS-4, and it's what the IRS uses to process your request. Don't let the name intimidate you. Whether someone says "federal tax id application," "apply for fein," or "ein application form," they're all referring to the same straightforward process. Your EIN follows a simple format: XX-XXXXXXX (nine digits with a dash after the first two).

Who Needs an EIN Application?

You need to ein apply if you hire employees, run an LLC, corporation, or partnership, or have a Keogh retirement plan. Even if you're a freelancer or sole proprietor, getting an EIN is a smart move because it keeps your Social Security number private when working with clients.

Not sure if you need to apply ein? Here's the full IRS checklist. You need one if you:

• Currently have or plan to hire employees
• Operate as a corporation or partnership
• Run an LLC (single-member or multi-member)
• Withhold taxes on income paid to nonresident aliens
• Have a Keogh or solo 401(k) retirement plan
• Buy or inherit an existing business
• File Employment, Excise, or Alcohol/Tobacco/Firearms tax returns
• Manage a trust, estate, or nonprofit organization
• Run a farmers' cooperative

Here's a real-world example. Say you're an Etsy seller who just formed an LLC. You'll need an EIN right away to open a business bank account and accept payments separately from your personal funds. Or maybe you're a freelance graphic designer on Upwork. You can use an EIN on your W-9 forms instead of your SSN, which helps protect against identity theft.

Benefits of Getting an EIN

Even if you're not legally required to get ein, there are solid reasons to do so anyway:

• Protect your identity. Use your EIN instead of your SSN on tax forms, invoices, and W-9s. This reduces identity theft risk.
• Open a business bank account. Most banks require an EIN to set up a business checking account.
• Build business credit. Your EIN lets you establish a credit history for your business, separate from your personal credit score.
• Hire employees. The IRS requires every business to have an EIN before bringing anyone onto the payroll.

Why Freelancers and Self-Employed Workers Should Get an EIN

If you're a sole proprietor, you technically don't need to get ein number from the IRS. But it's still a smart move. When you fill out W-9 forms for clients, you can use your EIN instead of giving out your Social Security number. If you ever start a Keogh plan, form an LLC, or hire your first employee, you'll need one anyway. Apply early so you're ready.

Is the EIN Application Free?

Yes, you can get a free ein number when you apply directly through the IRS website. Don't fall for third-party sites that charge $50 to $300 for something the IRS lets you do at no cost. How much does it cost to get an ein? Exactly zero dollars. The entire process takes about 15 minutes online, and your ein number free of charge is ready the same day.

Here's the bottom line: the IRS always provides a free ein. If a website asks for your credit card to "file your EIN," close that tab and go straight to irs.gov.

How to Apply for an EIN Number

Ready to get started? If you're wondering how to apply for ein, here are your four options:

• Online (IRS website) — Processing time: Same day — Best for: Everyone in the U.S.

• Fax (Form SS-4) — Processing time: About 4 business days — Best for: Those without internet access

• Mail (Form SS-4) — Processing time: 4–5 weeks — Best for: Only if other options are not available

• Phone (267-941-1099) — Processing time: Same day — Best for: International applicants only (Available 6 a.m. – 11 p.m. ET, Monday–Friday)

The online method is by far the easiest. Visit the IRS EIN application page and click "Begin Application." The system walks you through each question.

Pro tip: The IRS takes up to 2 weeks to add your new EIN to its permanent records. Until then, you can't file electronic returns or make electronic payments. So if you know you'll need an EIN, apply the day you form your business.

Another tip: Complete your application in one session. The IRS online system has a time limit and can't save your progress. Before you start, have this ready:

• Your name and SSN (or the responsible party's info)
• Your business legal name
• A U.S. physical address (not a P.O. Box; the IRS allows only 35 characters on the street line)
• Your business entity type (LLC, corporation, sole proprietorship, etc.)
• The date your business started

If you need to obtain ein through fax or mail, you can submit the SS-4 online form or download Form SS-4 from irs.gov and fill it out. This is also how to apply for ein number if you prefer paper filing.

Common EIN Application Mistakes to Avoid

Don't worry; these are easy to avoid once you know about them:

1. Selecting the wrong entity type. Choosing "corporation" when you're an LLC (or vice versa) can affect your tax obligations. Double-check before submitting.
2. Mismatched names. Your name on the form must match your articles of incorporation or organization exactly. Even small differences cause delays.
3. Using a P.O. Box. The IRS requires a physical U.S. address. If you enter a P.O. Box, your request will be rejected.
4. Applying before your business is legally formed. The IRS assumes your business already exists when you apply. Form your LLC or corporation first, then apply.
5. Paying for a free service. The federal ein application through the IRS is always free. Don't waste money on third-party filing services.

How to Find Your EIN Number

Lost your EIN? Don't panic. Here's how to get a ein number back if you've misplaced it:

• Check the confirmation letter the IRS sent when you first applied
• Look at previously filed tax returns or W-2 forms
• Contact your bank (they'll have it on file if you opened a business account)
• Call the IRS Business & Specialty Tax Line at (800) 829-4933

For a more detailed walkthrough, check out our guide on how to find your EIN number. You can also use an EIN lookup to track down your number.

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Conclusion

Getting an EIN is one of the simplest steps you'll take as a new business owner. The process is free, takes about 15 minutes online, and you'll have your number the same day. Just gather your business details, head to irs.gov, and follow the prompts.

Ready to take the next step with your business? Whether you need pay stubs for yourself or your employees, our easy-to-use paystub generator walks you through every step. No experience needed.