Business
How to register a DBA (doing business as)
A DBA — also called a fictitious business name, assumed name, or trade name — allows you to operate under a name different from your own legal name or your LLC's official name. It's required in most states when you do business under a different name.
DBA registration is handled at the county or state level depending on your state. Some states require public notice through newspaper publication.
Last reviewed: June 5, 2026
Steps
Determine if you need a DBA
You need a DBA if you operate a sole proprietorship or partnership under any name other than your own legal name, or if you operate an LLC or corporation under any name other than its officially registered name. Many small businesses use a DBA to have a shorter or more customer-friendly brand name.
Search for name availability
Before filing, search your county or state's business name database to confirm no other registered business is using the same name. The search is usually free on the Secretary of State or county clerk website.
File your DBA with the appropriate agency
Depending on your state, you file with the county clerk, county recorder, or state Secretary of State. Some states handle DBA registration entirely at the state level; others require county-level registration.
Publish a notice in a local newspaper (if required)
Several states — including California, New York, and Illinois — require you to publish a notice of your DBA in a local newspaper of general circulation once a week for a set period (typically 4–6 weeks). The county clerk can tell you whether this applies and which newspapers qualify.
Open a business bank account under the DBA name
Once registered, you can open a bank account in the DBA name and accept checks and payments made out to that name. Bring your filed DBA certificate to the bank.
Tip: A DBA does not create a separate legal entity — it is just a registered name. For liability protection, you still need an LLC or corporation.
Renew your DBA registration
Most DBA registrations expire after a set period — typically 5 years. Renew before expiration to keep your registration current.