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

Starting a business with a co-founder in Florida? You'll need an Employer Identification Number (EIN) from the IRS. This guide provides a comprehensive overview of obtaining an EIN for your Florida-based co-founder venture in 2026. We'll cover the application process, common pitfalls, and how Lovie can streamline the entire formation and EIN registration process.

What is an EIN?

An Employer Identification Number (EIN) is a unique nine-digit tax identification number assigned by the IRS to business entities operating in the United States. It's essentially a Social Security number for your business. You'll use it for various purposes, including opening a bank account, filing taxes, and hiring employees.

How to Apply for an EIN

  1. Determine Your Business Structure: Decide whether you'll form an LLC or a C-Corp with your co-founder. LLCs offer flexibility and pass-through taxation, while C-Corps are often preferred for raising venture capital due to their stock structure. Consider your long-term goals and consult with legal and financial professionals.
  2. Choose a Legal Business Name: Select a unique name for your business that complies with Florida's naming requirements. Check the Florida Division of Corporations' website to ensure the name is available and not trademarked by another entity. The name must include a designator like 'LLC' or 'Inc.'
  3. Appoint a Registered Agent: You'll need a registered agent in Florida to receive official legal and tax documents on behalf of your business. This can be yourself, your co-founder (if residing in Florida), or a commercial registered agent service. The registered agent must have a physical street address in Florida.
  4. Apply Online via the IRS Website: The easiest and fastest way to obtain an EIN is through the IRS website. The online application is free and generally takes only a few minutes to complete. You'll need to provide information about your business structure, ownership, and the reason for applying.
  5. Complete Form SS-4: The online EIN application is essentially an electronic version of IRS Form SS-4. You don't need to download the form separately if applying online. However, reviewing the form beforehand can help you prepare the necessary information.
  6. Receive and Store Your EIN: Upon successful completion of the online application, you'll receive your EIN immediately. The IRS will also send you a confirmation letter (CP 575) via mail. Keep this letter in a safe place as you'll need the EIN for various business activities.

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