How to check if a business name is available

To check if a business name is available, run four separate checks: domain availability across the major extensions, social handles on the platforms you'll actually use, your state's business-registry search, and a US trademark knockout search on the USPTO register. A free domain does not mean the name is legally clear to use.

Last updated 2026-07-24

Why a free domain doesn't mean the name is available

"Available" isn't one thing — it's several separate layers, and a domain registrar checks only one of them. When a registrar says a domain is free, it means that specific web address is unclaimed. It tells you nothing about whether another company already sells under the name, owns the matching social handles, or holds a federal trademark.

This is where founders get burned: the .com is open, the name feels safe, and money goes toward a logo, incorporation, and ads before anyone discovers the brand is already in use. The four layers are independent — passing one says nothing about the others — so run all of them (domain, social, state registry, trademark) before you commit a dollar to the name.

Step 1: Check the domain (and don't stop at .com)

Start with the exact-match .com. It's still the default people type and the single best signal of whether a name is taken in practice. If a real, active company is operating on the .com, treat the name as in use even if a different extension is free.

Then check the extensions founders actually launch on — .io, .ai, .app, .dev, and .co. Grabbing a neighbor of an unavailable .com is a fine launch move, but a busy .com run by a company in your space is a yellow flag: it often means the name is already in commercial use.

Also glance at close variants — hyphenated, singular/plural, and common misspellings. You don't need to own them all, but if a competitor holds the obvious ones, that shapes both your SEO and how easily customers find you.

Step 2: Check social handles across the platforms you'll use

A consistent handle across platforms is a real branding asset, so check the ones that matter for your business — X, Instagram, TikTok, YouTube, LinkedIn, and, for developer tools, GitHub. Aim for the same handle everywhere you can get it.

Distinguish a handle being taken from a handle being used. A squatted, dormant account is common and low-stakes; an active account run by another business in your category is the real concern — both a branding headache and a potential source of customer confusion. Weight what you find accordingly.

Step 3: Search your state business registry

Every US state runs a business-entity search through its Secretary of State (or equivalent) office. Its scope is narrow: a state generally won't register a new entity whose name is identical or too similar to one already on file in that state. Before you form an LLC or corporation, search the registry for your exact name and close variations.

Two things trip people up. It's per-state — a name that's free in Delaware can be taken in California, and clearing one state doesn't clear the country. And registry availability is not trademark clearance: passing the state check only means the paperwork won't be rejected, not that you have the right to use the name nationwide.

If the name is free but you're not ready to file, most states let you reserve it for a fee for a limited window. Forming the entity is a separate step, and filing fees vary widely by state — roughly $35 to $500 depending on where you register. If you'll operate under a different public name than your legal entity, you may also need a DBA ("doing business as") or fictitious-name filing, often at the county level.

Step 4: Run a US trademark knockout search

A knockout search is a quick pass over the federal trademark register to spot names that clearly collide — identical or closely similar marks already registered or applied for in the same kind of goods or services as yours. Run it on the USPTO's official Trademark Search tool at tmsearch.uspto.gov, which is free and public (it replaced the old TESS system in 2023).

Two things make the results readable. Trademarks are registered by class — there are 45 international classes covering different categories of goods and services — so the same word can exist as a separate trademark in unrelated industries. And a search usually shouldn't stop at the exact spelling; it's common to also look up phonetic equivalents and obvious variants. Whether any result actually conflicts with your name is a legal judgment, not something the search result decides.

Be clear about the limits. A knockout search only surfaces what's already on the public register; it can't tell you a name is legally "clear," and it doesn't capture unregistered common-law rights a business may have simply from using a name. This is general information, not legal advice — a screening step, not a green light. For an opinion on whether a specific name is safe to use, consult a trademark attorney, who can run a full clearance search. If you do register, filing through the USPTO's online system runs a few hundred dollars per class of goods or services; third-party filing services exist if you'd rather not file yourself.

Check everything at once, then decide

Run all four checks before you spend on a logo, incorporation, or advertising — the point is to catch a conflict while changing the name is still cheap. The order doesn't matter much, but skipping any layer is where the expensive surprises come from.

To make the first pass fast, snooze's free Name Safety Check at /name runs the domain check across .com/.io/.ai/.app/.dev/.co, checks social handles, and runs a USPTO trademark knockout — all from one brand name, in one place. It's a screening tool: it shows you what's already out there so you know where the risks are before you go deeper.

From there, use the right specialist for each layer. For the trademark question, a trademark attorney can give you a real clearance opinion. Your Secretary of State (or a formation service) handles registering the entity itself. And once you've settled on a domain, put a watch on it so you're the first to know if its status changes.

Frequently asked questions

How do I check if a business name is available?

Run four separate checks. First, domain availability across the major extensions; second, social handles on the platforms you'll actually use; third, your state's business-registry search through the Secretary of State; and fourth, a US trademark knockout search on the USPTO register at tmsearch.uspto.gov. Passing one check doesn't clear the others, so do all four before committing.

Does an available domain mean the business name is free to use?

No. A registrar only tells you the web address is unclaimed — it says nothing about trademarks, social handles, or whether another company already operates under that name. Plenty of names have a wide-open domain and are still registered trademarks in the same industry. Treat the domain as one of four checks, not proof the name is safe.

Is a trademark knockout search the same as legal clearance?

No. A knockout search only shows identical or similar marks already on the public register; it can't see unregistered common-law rights or tell you your specific name is legally "clear." It's a screening step to rule out obvious conflicts, not legal advice. For an actual clearance opinion, run a full search and consult a trademark attorney.

Where do I check if a business name is registered in my state?

Use your state's business-entity search, run by the Secretary of State (or equivalent office). It shows whether an identical or too-similar entity name is already on file there. Remember it's per-state — a name that's free in one state can be taken in another — and registry availability is not the same as nationwide trademark rights.

How much does it cost to register a business name?

It depends on what you're registering. Forming an LLC or corporation carries a state filing fee that varies widely — roughly $35 to $500 depending on the state. A federal trademark filed through the USPTO's online system runs a few hundred dollars per class of goods or services. Reserving a name or filing a DBA typically costs a smaller separate fee.

Do I need a lawyer to check if a name is available?

Not for the initial checks — you can run the domain, social, state-registry, and USPTO knockout searches yourself for free. You'd bring in a trademark attorney when you want an actual clearance opinion on whether your specific name is safe to use, since that involves legal judgment a public search can't provide. A knockout search screens; an attorney clears.

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References

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snooze.domains is not a law firm and this is educational information, not legal advice. A knockout search only shows what is already on the public register — it can't tell you a name is legally clear. For that, consult a trademark attorney.