Yes, a California Single Member LLC (SMLLC) is generally required to have an Employer Identification Number (EIN) to file Form 568, even though it is a disregarded entity for federal tax purposes. The California Franchise Tax Board (FTB) treats SMLLCs as separate entities for filing, and an EIN is necessary for e-filing the 568

Key Details Regarding EIN and CA 568:

• Requirement for Filing: While you might use your Social Security Number (SSN) for a sole proprietorship, California requires the SMLLC itself to file Form 568, making a unique EIN necessary.
• E-Filing Necessity: Tax software (like Lacerte or TurboTax) requires the LLC's own EIN to properly e-file Form 568, TurboTax Support.
• Getting an EIN: If you do not have one, you can apply for an EIN on the IRS website. Although the SMLLC is disregarded for federal purposes, the California FTB considers it a separate entity for California taxes.