How to Check DBA Name Availability

Start With the Agency That Actually Handles DBAs in Your State

Unlike LLC name searches, which are almost always run by a state's Secretary of State, DBA name searches are split between state-level and county-level systems depending on where you live. Before searching, confirm whether your state registers DBAs centrally or leaves it to each county, since searching the wrong database gives you an incomplete picture either way.

States With a Statewide DBA Search

Florida runs its fictitious name search through the Division of Corporations at Sunbiz, letting you search by the fictitious name itself, the owner's name, or an owner's document or FEI/EIN number. Ohio registers trade names and fictitious names statewide through the Secretary of State rather than by county. Texas offers a statewide search through SOSDirect for assumed names filed with the Secretary of State, which covers corporations, LLCs, and other entities, though sole proprietorships and general partnerships in Texas file their assumed names with the county clerk instead, so a full search there may mean checking both.

States That Search by County Instead

California has no statewide fictitious business name database; each county clerk-recorder maintains its own records, so you search the specific county, or counties, where the business operates. Illinois works the same way, with assumed names filed and searched through the county clerk in the county where the business is located. If you're filing or checking a name in one of these states, search each relevant county individually rather than assuming a single statewide tool covers you.

A Clear Search Doesn't Guarantee Exclusivity

Even a clean result from the correct search tool doesn't mean the name is legally yours alone. The Texas Secretary of State explicitly notes that its office doesn't check assumed names against existing ones before filing, and that more than one person can have the same assumed name on file. This reflects a broader truth about DBA filings generally: per the SBA, registering a DBA name doesn't provide legal protection by itself, so a search mainly confirms whether an identical name is already in the specific database you're checking, not whether using that name is risk-free.

Searching Beyond Your Own DBA Filing

A thorough name check goes beyond the DBA database itself. Search your state's business entity records too, since a name that's fine in the DBA system could still conflict with a registered LLC or corporation name. Then search the USPTO's Trademark Electronic Search System for your proposed name and close variations, since a state or county DBA search never checks federal trademark registrations, and operating under a name that infringes someone else's trademark carries legal risk regardless of how clean your DBA search looked.

Searching When You Operate in Multiple Places

If you plan to use the same DBA in more than one county or state, search each one separately rather than assuming a clear result in your home jurisdiction extends anywhere else. A name can be available in one county and already taken in the next one over, and a multi-county or multi-state business needs to confirm availability everywhere it intends to file, not just where it's headquartered.

Search Variations, Not Just the Exact Name

A search for your exact proposed name might miss close variations already on file, such as different punctuation or word order. Try a few reasonable variations of your name when searching, not just the precise spelling you have in mind.

Recheck Close to Your Filing Date

DBA and entity databases change as new businesses register. If you checked availability weeks or months ago, recheck shortly before you actually file, since a name that was available when you first looked could be taken by the time you submit your paperwork.

A County Search Doesn't Cover the Whole State

In a county-based state like California, clearing a search in one county says nothing about whether the name is already used in a neighboring county. If your business might expand, consider searching counties beyond your immediate one.

Not Legal Advice

A DBA name search, even done thoroughly across every relevant database, doesn't replace a full trademark clearance search if the name matters significantly to your brand. Talk to a trademark attorney before committing to a name you plan to build a larger brand around.