How to Get an EIN for Your International Founder Business in Connecticut (2026)

As an international founder, obtaining an Employer Identification Number (EIN) is a crucial step in establishing your business presence in Connecticut. This guide provides a comprehensive overview of how to get an EIN for your Connecticut business in 2026. Forget the complexities and let AI handle your EIN application with Lovie, making the process seamless and efficient.

What is an EIN?

An EIN, or Employer Identification Number, is a unique nine-digit number assigned by the IRS to business entities operating in the United States. It's essentially a Social Security number for your business, used to identify your company for tax purposes and other official procedures.

How to Apply for an EIN

  1. Determine Your Eligibility: Ensure your Connecticut business entity is eligible for an EIN. Most LLCs and corporations are eligible, even if you don't have a Social Security number (SSN) or Individual Taxpayer Identification Number (ITIN).
  2. Complete Form SS-4: Fill out IRS Form SS-4, Application for Employer Identification Number. This form requires information about your business, including its legal name, address, and the responsible party (the person controlling the entity).
  3. Choose Your Application Method: You can apply for an EIN online, by mail, or by fax. The online application is the fastest method, but it requires a US taxpayer identification number (SSN or ITIN) for the responsible party. If you don't have one, you'll need to apply by mail or fax.
  4. Submit Your Application: If applying online, submit the completed Form SS-4 through the IRS website. If applying by mail, send the form to the IRS address specified on the form instructions. If applying by fax, fax the form to the IRS fax number listed on the instructions.
  5. Receive Your EIN: If you applied online, you'll receive your EIN immediately after submitting the application. If you applied by mail or fax, you'll receive your EIN in a letter from the IRS, typically within 4-6 weeks.
  6. Verify Your EIN: After receiving your EIN, verify its accuracy by calling the IRS Business & Specialty Tax Line. This ensures that your EIN is correctly registered in the IRS system.

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