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California DBA Filing Guide

How to file a fictitious business name (DBA) in California, and where each filing is recorded.

A DBA ("doing business as") is a fictitious business name — the name a business operates under when it differs from its legal registered name. Unlike corporations and LLCs, DBAs are filed at the county level, not with the Secretary of State. This guide explains the process.

What Is a DBA?

Steps to File a DBA

Renewal and Expiration

Important: A DBA does not protect your name statewide. Another business in a different county can register the same name. For statewide name protection, consider forming an LLC or corporation.

DBA vs. LLC vs. Corporation

FeatureDBALLC / Corporation
Legal entityNoYes
Liability protectionNoYes
Filed withCounty clerkSecretary of State
Name protectionCounty onlyStatewide
Typical cost$40–$60$70–$100 + annual fees
Find the legal entity behind a DBA. Search the official Secretary of State database to see the registered entity: bizfileonline.sos.ca.gov