There is no single "California business license." Instead, businesses assemble a patchwork of city, county, and state registrations — and missing one can mean back taxes, penalties, an inability to enforce your contracts, or being shut down mid-operation. Here is a practical walkthrough of the licenses and permits most California businesses need, organized by the level of government that issues them.
Start with your city: the local business license
Nearly every California city requires a business license or business tax certificate, as do many counties for businesses in unincorporated areas — including home-based businesses and remote founders. Los Angeles, for example, requires a Business Tax Registration Certificate from the Office of Finance, with tax based on gross receipts. Points that catch people off guard:
- You may need licenses in multiple cities if you perform work in more than one — contractors and service businesses especially.
- Operating without a license can trigger back taxes, penalties, and interest for prior periods of operation.
- Many cities also require a home occupation permit for home-based businesses and zoning clearance for commercial locations. Check zoning before signing a lease; a use permit problem discovered afterward is expensive.
County filings: the fictitious business name statement
If you operate under a name that qualifies as fictitious under California law — including a name other than an entity's exact registered name or, for an individual, a name that does not include the owner's surname or that suggests additional owners — Bus. & Prof. Code § 17900 et seq. requires a fictitious business name (FBN or "DBA") statement filed with the county clerk, followed by publication in an approved newspaper. The consequence of skipping it is sharp: under § 17918, a business cannot maintain a lawsuit on contracts made under an unregistered fictitious name until it registers. FBN statements expire after five years and must be renewed.
State-level registrations most businesses need
- Entity registration. Corporations and LLCs register with the Secretary of State and file a Statement of Information; out-of-state entities doing business in California must qualify as foreign entities. Most are subject to the Franchise Tax Board's $800 minimum annual franchise tax.
- Seller's permit. If you sell or lease tangible goods that would be subject to sales tax, the California Department of Tax and Fee Administration (CDTFA) requires a seller's permit — before you make your first sale. There is no fee, but knowingly selling without a required permit is a misdemeanor.
- Employer registrations. Once you pay over $100 in wages in a quarter, register with the Employment Development Department (EDD) for payroll taxes. You will also need workers' compensation insurance from day one of having any employee — it is mandatory in California regardless of headcount, and Labor Code § 3700.5 makes failure to carry it a criminal offense.
- Federal EIN. Not a license, but nearly every business needs an IRS Employer Identification Number for banking, payroll, and tax filings.
Professional and industry-specific licenses
California licenses hundreds of occupations and business types through the Department of Consumer Affairs boards and other agencies. Common examples:
- Contractors — Contractors State License Board (CSLB) license for construction work of $1,000 or more (labor and materials, per 2026 threshold). Unlicensed contractors cannot sue to collect payment and can be ordered to disgorge everything they were paid (Bus. & Prof. Code § 7031).
- Food businesses — county health permits, and for many products a CDPH processed food registration.
- Alcohol — Department of Alcoholic Beverage Control (ABC) licenses, which are location-specific and often subject to county quotas.
- Professionals — physicians, accountants, engineers, cosmetologists, real estate brokers, and dozens more require individual licenses, and some professions must use special entity forms (professional corporations) rather than LLCs.
- Regulated finance and consumer businesses — lenders, brokers, and debt collectors face DFPI licensing.
The § 7031 rule for contractors illustrates a broader theme: in licensed fields, operating without the license does not just risk a fine — it can make your customer contracts unenforceable.
Special situations worth flagging
- Environmental and safety permits — fire department permits, hazardous materials disclosures, air quality permits for certain equipment.
- Signage and building permits — even a new sign typically requires city approval.
- Sales into other states — economic nexus rules may require sales tax registration elsewhere once you cross revenue or transaction thresholds.
How to get this right without drowning in it
The efficient sequence is: confirm zoning, form or qualify your entity, obtain your EIN, file the FBN if needed, register with CDTFA and EDD as applicable, then layer on city and industry licenses. Build a renewal calendar — licenses lapse quietly, and lapses surface at the worst times, such as due diligence when you sell the company. Licensing review is a standard piece of the regulatory compliance work we do for new and growing businesses, and it pairs naturally with business formation so the entity, licenses, and tax registrations all match.
Talk to a California business attorney
If you are launching a business or expanding into a new city or product line, a licensing review takes little time and removes real risk. Schedule a free consultation or call (949) 418-2113.
This article is attorney advertising and provides general information only. It is not legal advice and does not create an attorney–client relationship. Facts matter; consult a lawyer about your specific situation.
