How to Check Business Name Availability

Start With Your State's Business Entity Search

If you plan to form an LLC or corporation, your state's Secretary of State or equivalent filing agency runs a free, searchable database of every registered business name in that state, usually called a business entity search. Search your exact proposed name and close variations before you draft any formation paperwork, since a name conflict is one of the most common reasons a filing gets rejected, often after you have already paid the filing fee.

Understand the "Distinguishable" Standard

States do not require your name to be unique in a dictionary sense; they require it to be "distinguishable" from every name already on file, which is a narrower test than it sounds. Most states' rules explicitly say that differences in articles ("the," "a"), punctuation, plurals, spacing, and entity designators like "LLC" versus "L.L.C." versus "Limited Liability Company" do not make two names distinguishable from one another. Read your state's actual distinguishability rule, not just the search tool's results, before deciding a name is clear.

If You Will Operate as a Sole Proprietorship

A sole proprietorship operating under the owner's own legal name usually involves no state name filing at all, so there is no entity database entry to search. If you want to operate under a different name, most states or counties require a "doing business as" (DBA) or trade name filing, often with the county clerk rather than the Secretary of State, and availability is checked against that local or state DBA registry, which is separate from the LLC and corporation entity database. Confirm which office handles DBA filings where you operate, since this varies by state.

Check the Required Designator and Restricted Words

If you are forming an LLC or corporation, the legal name must include a designator showing the entity type, such as "LLC" or "Inc.," and most states restrict certain words, commonly "bank," "insurance," and anything implying a government affiliation, without prior approval from a specific regulator. A sole proprietorship's DBA name does not use these designators, but it has its own restrictions in many states against implying a different entity type than what you actually have.

Search the USPTO Trademark Database Separately

Whether you are forming an entity or filing a DBA, a state or county name approval only confirms your name is distinguishable from other registered names in that jurisdiction; it does not check for a federal trademark conflict. Search the United States Patent and Trademark Office's Trademark Electronic Search System (TESS) for your proposed name and close variations, since building a brand around a name that infringes someone else's registered trademark carries legal risk regardless of state or county approval.

Check Domain Names and Social Media Too

Checking whether a matching domain name and social media handles are available before you commit to a name is not a legal requirement, but it avoids a mismatch between your legal business name and your online presence later. Treat this as a practical step alongside, not instead of, the state and trademark searches.

Reserve the Name if You Are Not Ready to File

If you have confirmed an LLC or corporation name is available but are not ready to file yet, most states let you reserve it for a fee for a limited period; Georgia's reservation lasts 30 days for $25 and cannot be renewed, for example, while other states allow longer, renewable reservations. A sole proprietorship's DBA filing generally does not have an equivalent reservation option, since the filing itself is usually quick and inexpensive.

If You Plan to Expand to Other States

A name search only checks the one state or county you searched. If you expect to register as a foreign LLC or corporation in other states later, or want the same name nationally, search each state you might expand into, since a name available where you start can already be taken elsewhere.

For the LLC-specific version of this process, including state search tools and reservation rules in more detail, see how to check LLC name availability.

A Clear Search Does Not Guarantee Approval

Even after a clean search, the filing agency makes the final call on whether a name is distinguishable enough when you actually submit your formation paperwork or DBA filing. Staff review can catch a conflict the automated tool missed, so treat your own search as a strong indicator, not a guarantee.

A DBA Does Not Create Legal Entity Protection

Filing a DBA only tells the public who is behind a business name and lets you operate under it; it does not create a separate legal entity or any liability protection the way an LLC or corporation does. Don't confuse registering a trade name with forming a business entity.

A Name Reservation Is Not a Trademark

Reserving a name with your state only holds it against other entity filings in that state for a limited time; it creates no trademark rights and does not stop someone else from using a similar name in a different context or registering it federally. If brand protection matters, a trademark registration through the USPTO is a separate, additional step.

Expect Rules to Differ by State and County

Naming rules, DBA procedures, and reservation terms vary not just by state but sometimes by county for a sole proprietorship's trade name filing. Always check your specific jurisdiction's current rule rather than assuming a general rule of thumb applies everywhere.

This Is Not Trademark or Legal Advice

If your business name matters to your brand beyond basic registration, especially if you plan to franchise or expand nationally, talk to a trademark attorney about a full clearance search before committing to a name. This guide covers how to check name availability at the state and county level, not trademark risk assessment.