Beyond sales tax compliance, California businesses may need various additional registrations and licenses, including:

1. Business License: Obtain state, city, or county business licenses based on the business type and location.

2. Employer Identification Number (EIN): Required for businesses with employees, partnerships, corporations, or certain LLCs.

3. State Income Tax Withholding: Register with the California Department of Tax and Fee Administration (CDTFA) for state income tax withholding if the business has employees.

4. Unemployment Insurance: Register with the California Employment Development Department (EDD) to manage unemployment insurance taxes for employees.

5. Workers' Compensation Insurance: Obtain workers' compensation insurance to cover workplace injuries or illnesses, as required for businesses with employees.

6. Professional Licenses: Acquire specific state licenses for certain professions, such as healthcare professionals, contractors, or legal services.

7. Local Permits: Obtain additional permits such as zoning permits or health permits, especially for businesses like restaurants.

8. Franchise Tax Registration: If operating as a corporation or LLC, register and pay the state’s franchise tax through the California Secretary of State.

9. Trade Name Registration (DBA): Register a trade name or “Doing Business As” (DBA) with the county clerk if operating under a name different from the legal business name.

10. Permit for Alcohol Sales: If selling alcoholic beverages, obtain the necessary permits from state authorities.

11. Environmental Permits: For businesses involved in manufacturing or environmental services, obtain relevant environmental permits.

12. Fictitious Business Name (FBN) Registration: Also known as doing business as (DBA), if you are operating under a name different than your legal business name.

13. State Taxes: Consideration of other state taxes such as franchise tax, if you are incorporated.

These additional registrations and licenses ensure comprehensive compliance with state and local regulations, supporting lawful and smooth business operations within California’s regulatory framework.