California

California LLC Naming Rules

Complete 2026 guide to California LLC naming requirements — required designators, forbidden and restricted words, uniqueness rules, and how to check availability before filing.

Required Designators in California

Your California LLC name must end with one of these official designators:

LLC

L.L.C.

Limited Liability Company

Limited Liability Co.

Ltd. Liability Co.

Ltd. Liability Company

Forbidden and Regulated Words

Cannot use without state regulatory approval:

Bank, Trust, Trustee (restricted to chartered banks)
Insurance, Insurer, Insurance Agency (requires CA Department of Insurance approval)
Incorporated, Inc., Corporation, Corp. (reserved for corporations)

Restricted Words (Require Licensing Board Approval)

Attorney, Lawyer, Law, Legal — requires CA Bar approval
Medical, Dental, Doctor — requires professional licensing
University, College — requires Bureau for Private Postsecondary Education

Uniqueness Requirement in California

Must be distinguishable on the records of the California Secretary of State — check the Business Search tool.

California-Specific Naming Rules

Cannot be identical to an existing CA entity
Cannot suggest an unlawful purpose
DBA (fictitious business name) filed at county level, not state

Check California LLC name availability — free

Run a free check against California's business database plus USPTO federal trademarks in one search.

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FAQ

What must my California LLC name include?

Your California LLC name must include one of the following designators: LLC, L.L.C., Limited Liability Company, Limited Liability Co., Ltd. Liability Co., Ltd. Liability Company. Most common: simply appending 'LLC' at the end (e.g., 'Acme Ventures LLC').

How do I check if a California LLC name is available?

Search the California Secretary of State's business name database online (most states offer free search). Also run a USPTO trademark search for federal conflicts and a .com domain check. FormifyAI's free name-search tool checks both state availability and trademark conflicts.

What words can't I use in my California LLC name?

California restricts or forbids: Bank, Trust, Trustee (restricted to chartered banks); Insurance, Insurer, Insurance Agency (requires CA Department of Insurance approval). These typically require approval from specific state regulatory boards (e.g., insurance commissioner, banking regulator) before use.

Can I use a similar name to an existing California business?

No. Must be distinguishable on the records of the California Secretary of State — check the Business Search tool. "Distinguishable" typically means the names must differ in more than just punctuation, spacing, or articles ('The', 'An', 'A'). Even if the state accepts the filing, you could face trademark lawsuits from the existing business.

Can I reserve a California LLC name before filing?

Cannot be identical to an existing CA entity

What if my preferred California LLC name is taken?

Options: (1) Modify the name slightly to make it distinguishable. (2) File under a different legal name and operate as a DBA (fictitious business name). (3) Purchase the existing LLC if it's dormant. (4) Wait for administrative dissolution if the existing LLC is non-compliant. FormifyAI's LLC name generator can suggest 20+ alternatives in seconds.

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