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

As an international founder, establishing a business in California offers access to the largest US market and a thriving tech ecosystem. A crucial step in this process is obtaining an Employer Identification Number (EIN) from the IRS. This guide provides a comprehensive overview of how to get an EIN for your California business as an international founder in 2026. Lovie.co simplifies this process with AI-powered formation, ensuring compliance and efficiency.

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. Even if you don't plan to hire employees right away, you'll likely need an EIN to open a bank account, file taxes, and conduct other essential business activities. For international founders, obtaining an EIN is often the first step in building a US presence.

How to Apply for an EIN

  1. Determine Your Business Structure: Decide whether you will form an LLC or C-Corp. For international founders, LLCs are often simpler for tax purposes, but C-Corps may be preferred for venture capital funding. California requires both to register with the Secretary of State.
  2. Prepare Form SS-4: Complete IRS Form SS-4, Application for Employer Identification Number. This form requires information about your business, including its name, address, and the reason for applying for an EIN. As an international founder without an SSN, you'll need to leave those fields blank and provide details about your foreign address.
  3. Obtain a US Address (If Possible): While not strictly required, providing a US address on Form SS-4 can expedite the EIN application process. You can use a registered agent's address or a virtual office address. Lovie provides registered agent services in California.
  4. Submit Form SS-4 to the IRS: You can submit Form SS-4 to the IRS via mail, fax, or telephone (for international applicants only). The fax number for international applicants is +1 (855) 235-5155. Calling is also an option, but wait times can be long. Include Form 2848 if you have a designated representative.
  5. Await EIN Confirmation: The IRS will send your EIN confirmation letter (Notice CP 575) via mail. This can take several weeks, especially for international applicants. In 2026, expect potential delays due to increased application volume.
  6. Receive and Store Your EIN: Once you receive your EIN confirmation letter, store it securely. You'll need it for opening a bank account, filing taxes, and other business-related activities. You can also request an EIN verification letter from the IRS if needed.

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