How to get an EIN for your LLC

An Employer Identification Number (EIN) is a nine-digit federal tax ID for your business. It’s free, and most LLC owners can get one online in a single sitting.

Does your LLC need an EIN?

You need one if your LLC:

• Has more than one member
• Has employees or plans to hire
• Elects to be taxed as an S corporation or C corporation
• Must file certain excise or employment tax returns

A single-member LLC with no employees isn’t always required to have one, but it’s still a good idea: banks almost always ask for an EIN to open a business account, and it keeps your Social Security number off invoices and W-9s.

How to apply

1. Wait until your LLC is approved by the state — you’ll need the exact legal name and formation date.
2. Go to the IRS EIN online application at IRS.gov. Only use the official IRS site; the IRS never charges for an EIN.
3. Choose “Limited Liability Company” and answer the questions about members and your state.
4. Submit and save the confirmation letter (CP 575) as a PDF — you’ll need it for your bank.

The online tool is available during set hours on weekdays. If you don’t have a Social Security number or ITIN, you’ll generally need to apply by fax or mail using Form SS-4.

Last updated October 2026. General information only, not tax advice.