How to Check If a Business Name Is Available

Every state requires a new entity's name to be "distinguishable on the record" from other active entities already registered there — the exact standard varies, but it generally rules out names that are identical or differ only by punctuation, spacing, or an entity suffix like "LLC" or "Inc." A name search only checks entities filed in that one state; it says nothing about names used in any other state or about trademark rights.

Use the same business entity search this site documents for each state, and search the most distinctive word in your proposed name rather than the entire thing — a search for the full name including "LLC" can miss close matches that would otherwise trigger a rejection. Each state's page on this site covers that state's specific quirks, like whether punctuation is ignored or whether the search only matches from the start of the name.

Most states let you reserve an available name for a modest fee, typically holding it for somewhere between 60 and 120 days while you finish the rest of the formation paperwork. It's optional — you can also just file the formation document directly using the name — but it's useful if you need time to line up other pieces (a registered agent, an operating agreement, funding) before submitting.

This is the most common misunderstanding: a state approving your entity name is not the same as clearing it for trademark use. State review only checks against other registered entities in that state — it doesn't search the U.S. Patent and Trademark Office's trademark database, other states' registries, or common-law trademark use. A name can be approved for entity formation and still infringe someone else's trademark, which is a completely separate legal exposure worth checking on its own before you build a brand around the name.

The name-availability check described here applies to your entity's legal name — the one on its formation document. If you plan to operate under a different name (a "doing business as" or trade name), that's typically registered separately, often at the county rather than the state level, and doesn't go through the same entity name-distinguishability check.

If a business name search comes back available, am I guaranteed to be able to use it?

No — state approval only confirms no identical or confusingly similar entity name is already registered in that state. It doesn't check federal or state trademarks, or names used in other states, so a separate trademark search is worth doing before committing to a name.

Can I reserve a business name before I'm ready to file?

Yes — most states let you reserve an available name for a fee, usually for 60 to 120 days, while you finish the rest of your formation paperwork.

Does checking name availability in one state protect the name nationally?

No — each state's business registry is separate, so a name cleared in one state can still be actively registered by a different, unrelated business in another state.

What's the difference between a name-availability search and a trademark search?

A name-availability search only checks a state's own registry of active entities. A trademark search checks the U.S. Patent and Trademark Office's database (and common-law use) for conflicting brand names — a name can pass one and still infringe on the other.