How to Get an EIN for Your Co-Founder Pair Business in Connecticut (2026)

Starting a business with a co-founder in Connecticut? Obtaining an Employer Identification Number (EIN) is a crucial step for your co-founder pair business. This guide provides a clear, step-by-step approach to securing your EIN in Connecticut in 2026. Let Lovie streamline the process for you!

What is an EIN?

An Employer Identification Number (EIN) is a unique nine-digit number assigned by the IRS to identify your business entity. Think of it as a Social Security number for your Connecticut business. It's essential for various business activities, from opening a bank account to hiring employees.

How to Apply for an EIN

  1. Determine Your Eligibility: Ensure your Connecticut co-founder business is eligible for an EIN. Generally, any business entity, including LLCs and corporations, operating in Connecticut and needing to pay federal taxes or hire employees requires an EIN.
  2. Choose a Responsible Party: Designate a 'responsible party' for the EIN application. This individual must be a co-founder or someone with control over the entity's funds and assets. They will be the primary point of contact with the IRS.
  3. Complete Form SS-4: Fill out IRS Form SS-4, Application for Employer Identification Number. This form requires detailed information about your Connecticut co-founder business, including its legal name, address, business activity, and the responsible party's information.
  4. Submit Your Application: Submit Form SS-4 to the IRS. You can apply online through the IRS website for immediate EIN issuance, or you can fax or mail the form. Online application is the fastest method.
  5. Receive Your EIN: Upon approval, you will receive your EIN from the IRS. If applying online, you'll receive it immediately. If applying by mail or fax, you'll receive a confirmation letter.
  6. Verify EIN Details: After receiving your EIN, verify the information provided to the IRS. Ensure all details are accurate. If there are any discrepancies, contact the IRS immediately to correct them.

Start your formation with Lovie — $20/month, everything included.