How to Get an EIN for Your Agency Business in California (2026)

As an agency founder in California, securing an Employer Identification Number (EIN) is crucial for your business's financial and legal operations. This guide provides a comprehensive overview of obtaining an EIN for your agency in California in 2026.

What is an EIN?

An EIN, or Employer Identification Number, is a unique nine-digit number assigned by the IRS to identify your business entity. It's essentially a Social Security number for your agency, allowing you to hire employees, open business bank accounts, and file taxes.

How to Apply for an EIN

  1. Determine Your Eligibility: Ensure your agency meets the IRS requirements for obtaining an EIN. Generally, any entity operating a business in the U.S. needs an EIN, even if it doesn't have employees.
  2. Choose Your Business Structure: Decide on the legal structure of your agency (e.g., LLC, S-Corp, C-Corp). This will impact your tax obligations and the information you provide on the EIN application.
  3. Gather Required Information: Collect all necessary information, including the name and address of your agency, the responsible party's (owner, partner, officer) name and SSN/ITIN, and the reason for applying for the EIN.
  4. Complete the Online Application (Form SS-4): Access the IRS website and complete the online EIN application (Form SS-4). The online application is the fastest and easiest method.
  5. Submit Your Application: Review your application carefully and submit it electronically through the IRS website. You'll receive your EIN immediately upon successful submission.
  6. Record Your EIN: Keep your EIN in a safe and accessible place. You'll need it for various business activities, including banking, tax filings, and licensing.

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