How to Get an EIN for Your Software Developer Business in Connecticut (2026)

As a software developer in Connecticut, obtaining an Employer Identification Number (EIN) is a crucial step for legitimizing your business and complying with tax regulations. Whether you're freelancing, building a SaaS product, or running a development agency, this guide will walk you through the process of getting an EIN in Connecticut in 2026. Let Lovie handle the complexities while you focus on coding.

What is an EIN?

An EIN, or Employer Identification Number, is essentially a Social Security number for your business. It's a unique nine-digit number assigned by the IRS to identify your business entity for tax purposes. You'll need an EIN to open a business bank account, hire employees, and file certain taxes.

How to Apply for an EIN

  1. Determine Your Eligibility: Ensure your software developer business structure requires an EIN. LLCs with employees or electing to be taxed as a corporation, partnerships, and corporations all need an EIN. If you are a sole proprietor with no employees, you may be able to use your SSN.
  2. Choose Your Business Structure: Decide on your business structure (LLC, S-Corp, etc.). This choice impacts your tax obligations and liability. For Connecticut software developers, LLCs and S-Corps are common choices. Remember Connecticut has a business entity tax of $250.
  3. Prepare Form SS-4: Complete IRS Form SS-4, Application for Employer Identification Number. You can download the form from the IRS website or complete the application online. Be prepared to provide information about your business, such as its name, address, and the reason for applying for an EIN.
  4. Apply Online (Recommended): The easiest and fastest way to get an EIN is through the IRS website. The online application is available during certain hours and typically results in immediate EIN issuance.
  5. Submit via Fax or Mail (If Necessary): If you can't apply online, you can fax or mail Form SS-4 to the IRS. However, processing times are significantly longer.
  6. Receive and Store Your EIN: Once your application is approved, you'll receive your EIN. Keep this number in a safe place, as you'll need it for various business activities.

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