Last Updated: May 10, 2024, 7:49 am by TRUiC Team

Do I Need An EIN For My LLC?

An Employer Identification Number (EIN) is like a Social Security number for your business. EINs allow the IRS to keep track of your business’s tax reporting. 

LLCs with more than one member need an EIN and all LLCs that have employees are required to have an EIN. We will explain below why all LLCs can benefit from having a free EIN

Read our Do I Need an EIN for my LLC guide below or visit our EIN Benefits or What is an EIN guide to learn more.

Important: LLCs need to be officially registered and approved before getting an EIN. Visit our Form an LLC guides and follow the simple steps for registering an LLC yourself.

Does a Single Member LLC Need an EIN?

When Does an LLC Need an EIN?

If your business is an LLC with employees or excise tax liability, then you are required to get an EIN.

If your business is an LLC with more than one member, then you are required to obtain an EIN.

We recommend getting an EIN even if you aren't required to because having an EIN provides several benefits.

You can apply for an EIN with the IRS EIN Assistant for free but you will need to form your LLC before applying for an EIN.

EIN Benefits

Not all LLCs are required to get an EIN but it’s usually a good idea to get one.

Getting an EIN provides these benefits:

  • An EIN can help protect your corporate veil.

  • If you form your business without employees, but then find yourself ready to start hiring, you will already have an EIN.

  • Getting an EIN instead of using your Social Security number (SSN) will keep your SSN private and reduce the risk of identity theft.

  • Most banks require an EIN in order to open a business banking account. A business bank account is required to keep your personal finances and professional finances separate.
  • Although an EIN is not required to apply for all business loans, most lenders prefer a company that has established its business credit through a business bank account and lines of credit associated with the company's EIN.

Read more about the benefits of getting an EIN.

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How to Get a Free EIN for Your LLC

Important: LLCs need to be officially registered and approved before getting an EIN.

Use our free Form an LLC guide for help registering your business. The guide also includes free EIN instructions. You can also use an LLC formation service to register your LLC for you.

The quickest and simplest way for taxpayers to get a free EIN is to apply online on the IRS website using the EIN Assistant.

Helpful information to guide you in requesting your EIN number from the IRS EIN Assistant:

  • The IRS’s hours of operation for obtaining your EIN are Monday-Friday from 7 am to 10 pm
  • Only United States and U.S. Territories-based businesses are eligible
  • You must have a valid Taxpayer Identification Number (SSN, ITIN, EIN) 
  • The entity owner or responsible party may only apply once per day
  • Your application must be filled out in one session and cannot be saved
  • The session will time-out after 15 minutes if not in use
  • You will immediately get an EIN after the form is completed
  • Applications cannot be processed if an EIN was previously obtained online

You can apply for an Employer Identification Number (EIN) by fax or mail by completing Form SS-4.

If you are submitting by fax, send your EIN application to fax number (855) 641-6935.

If applying by mail, submit to Internal Revenue Service, Attn: EIN Operation, Cincinnati, OH 45999. 

Get an EIN

Option 1: Request an EIN from the IRS

Apply Online

- OR -

Option 2: Apply for an EIN by Mail or Fax

Download Form

Mail to:
Internal Revenue Service
Attn: EIN Operation
Cincinnati, OH 45999

Fax: (855) 641-6935

Fee: Free


You don’t need an EIN if you’re self-employed; you can simply use your Social Security number. However, some people who are self-employed choose to apply for an EIN instead of using their Social Security number to reduce the risk of identity theft. It’s less likely for someone to break into your accounts when you keep business finances and personal finances separate.

No, there is not a difference between an Employer Identification Number (EIN) and a Taxpayer Identification Number (TIN). Both refer to the nine-digit number issued by the IRS for your business.

No, there is not a difference between an EIN and a Federal Employer Identification Number (FEIN). A FEIN can also be referred to as a Federal Tax Identification Number.

It is very easy to look up your EIN, and there are several ways you can do so. First, the IRS will typically quickly email or send a physical letter confirming your EIN application. You can also check business documents such as tax returns to find your EIN printed there.

You can look up another business’ EIN by searching for the company on the Securities and Exchange Commission (SEC) EDGAR online Forms and Filings database.

If you still aren’t able to find your EIN by checking for a confirmation email or letter, or by identifying it on your business documents, you can simply call the IRS EIN Department at 1-800-829-4933 to speak with one of their representatives. Their hours of operation are Monday-Friday from 7 a.m. to 7 p.m.

An EIN is a nine-digit number issued by the IRS to keep track of a business’s tax reporting. The Data Universal Numbering System (DUNS) is a nine-digit number issued by Dun & Bradstreet, a business analytics company. A DUNS number helps businesses create and identify their credit reports.


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