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Free EIN Application Guide — Interactive IRS SS-4 Walkthrough

Get Your EIN (Employer Identification Number)

Interactive walkthrough of the IRS SS-4 application. We'll help you fill out each field correctly — then link you straight to the IRS to submit.

Step 1 of 6
Why do you need an EIN?
This determines which IRS form path to follow. Select all that apply.
What type of entity?
Select the legal structure of your business. This maps to Line 9a on Form SS-4.
Business Information
This appears on Lines 1-6 of Form SS-4. Enter what you'll put on the real form.
As registered with your state. Sole props: use your full legal name.
Leave blank if same as legal name.
When you formed the entity or began operating.
Responsible Party (Line 7a)
The IRS requires one individual (not a business) as the "responsible party" — the person who controls, manages, or directs the entity.
Required by IRS. We don't store this — it's only for your reference when filling out the form.
🔒 Privacy note: This tool runs entirely in your browser. Nothing is sent to any server. Your SSN stays on your screen only.
Employees & Accounting
These map to Lines 12-16 on Form SS-4.
Most businesses use December. If unsure, pick December.
Leave blank if no employees planned.
Review & Apply
Here's a summary of what you'll enter on IRS Form SS-4. Review it, then click to apply online — the IRS issues your EIN immediately.
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An Employer Identification Number (EIN) is your business's tax ID — like a Social Security number but for your company. You need one to open a business bank account, hire employees, and file taxes. The IRS application (Form SS-4) is free but can be confusing if you've never done it. This interactive guide walks you through every field, explains the tricky parts, and links you directly to the IRS to apply — where you get your EIN immediately.

How to Get Your EIN

  1. 1

    Tell us why you need an EIN

    Hiring employees, opening a bank account, forming an LLC — your reason determines which IRS questions apply to you.

  2. 2

    Select your entity type

    Sole prop, LLC, S-Corp, C-Corp, partnership, or nonprofit. This maps to Line 9a on Form SS-4.

  3. 3

    Enter your business details

    Legal name, trade name, state, start date. We explain what goes in each field and flag common mistakes.

  4. 4

    Add responsible party info

    The IRS requires one individual as the "responsible party." We explain who qualifies and what they need.

  5. 5

    Review and apply

    See a summary of all your SS-4 fields, entity-specific tips, then click through to the IRS online application. Your EIN is issued immediately.

Why Every Business Needs an EIN

Required for business banking

Banks require an EIN to open a business checking account. Even sole props benefit from separating business and personal finances.

Hiring employees

You can't run payroll without an EIN. It's required for withholding taxes and filing employment returns (Form 941).

Business credibility

Clients, vendors, and partners often ask for your EIN on W-9 forms. Having one signals you're a legitimate business.

Protect your SSN

Using an EIN instead of your personal Social Security number on business forms reduces identity theft risk.

Frequently Asked Questions

How long does it take to get an EIN?

If you apply online at IRS.gov, you get your EIN immediately upon completion. The online application is available Monday-Friday, 7am-10pm Eastern. If you apply by fax, expect 4 business days. By mail, 4-6 weeks.

Does an EIN cost anything?

No. Getting an EIN from the IRS is completely free. Be wary of third-party websites that charge $50-$150 to "help" you apply — they're just filling out the same free IRS form.

Do sole proprietors need an EIN?

Not always, but it's recommended. You need one if you have employees or want a business bank account. Even without those, an EIN protects your SSN on W-9 forms and invoices.

Can I apply for an EIN online?

Yes, the IRS online EIN application is the fastest method. You must have a valid SSN or ITIN and be applying during IRS business hours (Mon-Fri, 7am-10pm ET). Our guide prepares you for every field before you start.

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