Can Two Businesses Use the Same DBA?

It Depends on the State

Whether two businesses can register the same DBA comes down to how that state's filing agency handles the process. States that register DBAs centrally, through a Secretary of State's office, typically check a new filing against existing ones and reject it if the name is identical or confusingly similar to one already registered. States that leave DBA registration to individual counties or cities often have no statewide check at all, which means the same or a similar name can be filed more than once without either filer knowing about the other.

States That Check for Conflicting Names

West Virginia's trade name registration requires a new name to be "distinguishable from other registered names," according to the West Virginia Secretary of State, and in some cases where a name is unavailable, the filer must use a different, "forced DBA name" instead. States that register DBAs at the state level, rather than the county level, more often build in this kind of check, similar to how they already check new LLC and corporation names for conflicts, since both registrations run through the same office.

County-Level Systems Don't Always Cross-Check

Kansas has no statewide DBA registry at all; trade names are handled at the county or city level, according to the Kansas Secretary of State, so there's no single database checking for conflicts across the whole state. Nevada is similar: DBAs, called Fictitious Firm Name certificates there, are filed with the county clerk in each county where a business operates, not with the Secretary of State, and fees and rules are set locally. California's Fictitious Business Name Statement is also filed with the county clerk-recorder where a business has its principal place of business, with no single statewide check. In all three states, two businesses operating in different counties could end up with the same or a very similar DBA on file without either one violating any rule.

A DBA Was Never an Exclusive Right

Even in a state that does reject exact duplicates, a DBA filing doesn't grant the kind of exclusive right people sometimes assume it does. Per the SBA, "registering your DBA name doesn't provide legal protection by itself." A DBA is a public record showing who's using a name for tax, banking, and contract purposes; it's not a legal claim that stops a different business, especially one outside the same state or county registry, from using a similar or identical name.

What Actually Stops Someone Else From Using Your Name

If you want to prevent other businesses from using your name, the tool for that is a federal trademark through the United States Patent and Trademark Office, not a DBA filing. A trademark registration gives the owner exclusive, nationwide rights to use a mark in connection with specific goods or services, and lets the owner enforce that right against a later user anywhere in the country, regardless of state or county DBA registries. A DBA and a trademark are separate, unrelated filings: one registers a public name locally, the other protects a brand nationally.

Checking Before You File

Before settling on a DBA name, search your state's business entity and trade name databases, and check locally with the county clerk if your state handles DBAs that way, since a statewide search won't catch a county-only filing. It's also worth running a search on the USPTO's trademark database to see whether your chosen name, or something close to it, is already trademarked nationally, since a DBA filing won't protect you from a trademark infringement claim even if your state lets you register the name.

Two Businesses, Same Name, Different States

It's common and generally fine for businesses in different states to use the same or a similar name, since DBA registrations, and most LLC and corporation name registrations, only guarantee uniqueness within that one state. Problems tend to show up only if one of the businesses expands into the other's state, or if either one holds a federal trademark covering the name.

What Happens If a Conflict Comes Up Later

If another business challenges your use of a name, whether because of a trademark claim or a dispute over local goodwill, having a DBA on file doesn't protect you from having to change the name or face legal action. A DBA filing is evidence of use, which can matter in some disputes, but it's not a defense on its own.

A Trademark Search Costs Less Than a Rebrand

Checking the USPTO's trademark search tool and your state's business name databases before you file a DBA, print signage, or launch marketing is far cheaper than discovering a conflict after you've built a brand around a name. See our guide on DBA vs. trademark: what is the difference for how the two registrations relate.

Not Legal Advice

Name conflicts and trademark infringement are fact-specific legal questions. Talk to a business attorney before you commit significant marketing spend to a name if you're aware another business, in your state or elsewhere, is already using something similar.