How Do I Check If a Business Name Is Available in My State?

By Bill Stilwell · Last reviewed October 16, 2026

The short answer

Go to your state’s business filing office website, usually the Secretary of State, and use its business entity search to look up your planned name. If the same name or one too close to it is already on file, the state will usually reject your formation papers. A clear result only means the state will likely accept the name. It does not mean the name is free of trademark problems.

What this means

The outline asks you to search the formation state’s business records (8.2.1). Your formation state is the state where you file your limited liability company (LLC), corporation, or other entity.

The U.S. Small Business Administration (SBA) notes that most states won’t let you register a name another business already holds, and each state has its own naming rules. Those rules often cover:

Whether the name is “distinguishable” from names already on file
Required endings, like “LLC” or “Inc.”
Words that are banned or need approval, like “bank” or “insurance” in many states

Example: a roofer wants to form “Summit Ridge Roofing LLC.” (Made up for this page.) The state search shows “Summit Ridge Roofing Co.” already exists. Many states would see those as too close. The roofer picks a different name before paying for a logo.

Why it matters

Rejected filings. If the name isn’t available, your formation papers can be sent back, and you lose time.
Rebranding costs. Finding out after you’ve printed cards and built a website means paying twice.
Confusion with a nearby business. Even if the state allows a close name, customers and search engines may mix you up (see 8.3.3 Name Confusion Risk).

Who this applies to

Anyone forming an LLC, corporation, limited partnership, or nonprofit.
Sole proprietors filing a DBA (“doing business as”) name at the state level.

If you’re a sole proprietor using only your own name, the SBA says you generally don’t need to register a name, but a quick search still helps you spot conflicts.

How to do it

Find your state’s business filing office. In most states it’s the Secretary of State. Search for “[your state] business entity search” and make sure the site ends in .gov or is the official state site.
Search the exact name you want.
Search shorter versions too. Drop words like “LLC,” “the,” “services,” and “company.” States often ignore those when they compare names.
Search spelling variations and sound-alike versions.
Read the state’s name rules: required endings, restricted words, and what “distinguishable” means there.
Look at the status of any close matches. A name held by an inactive or dissolved company may still be unavailable for a time in some states. Check your state’s rules.
Save a screenshot of your search results with the date.
If the name looks clear and you’re not ready to file, consider reserving it (see 8.2.7 Name Reservation).
If you’ll register in more than one state, repeat the search in each one.

What proof to keep

Dated screenshots of each search
A note of the state’s naming rules that apply to your name
Any name reservation or approval letter

Store these with your formation records.

Common mistakes

Searching only the exact name. Close matches can block you too.
Using a third-party site instead of the state’s own search. Some aren’t current. Use the official source.
Treating “available” as “safe.” A state can accept a name that still conflicts with a trademark (see 8.3.1 Trademark Search).
Forgetting other states. Your name may be clear in your state but used by a large company elsewhere that has a federal trademark.
Waiting too long between searching and filing. Someone else can file the name in the meantime.

When to get help from a pro

A business attorney can help if the state rejects your name, if your name includes a restricted word, or if a close match exists. Ask:

Is my name distinguishable under my state’s rules?
Does my name include any words that need approval from another agency?

Bill’s note

[Bill: add a short story or opinion. For example, what you found when you searched the SiteSmarty name, or a client who had to rename after their filing was rejected.]

How I did this for SiteSmarty

[Date I did this:]
[What I actually did, step by step: the state site I used and the variations I searched]
[What it cost and how long it took:]
[What surprised me or what I’d do differently:]
[Screenshot or photo to add, with private info blurred: the state search results page]
[Result so far:]

Questions people ask

Where do I search for business names in my state? Use your state’s business entity search, usually on the Secretary of State website. Make sure you’re on the official state site.

What if a similar name is already registered? Your state may reject your name if it isn’t distinguishable. Pick a clearly different name, or ask an attorney if you think yours is different enough.

Does a state name search check trademarks? No. State business records and trademark records are separate. Search the U.S. Patent and Trademark Office records too.

Can two businesses have the same name in different states? Each state only checks its own records, so it can happen. That doesn’t protect you from a trademark claim by a business with federal rights.

Audit check

Question: Was the legal name searched in the formation state’s official records before filing, with results saved?
Pass looks like: Dated screenshots from the official state search covering the exact name and close variations, with no conflicting active names, and notes on the state’s naming rules.
Fail looks like: No search. Only the exact name searched. Results from an unofficial site. A name filed that is very close to an existing one.
Evidence to collect: Search screenshots, the state’s naming rules, and the accepted formation filing.

Where this fits

Do this first: 8.1.1 Legal Name, 8.1.3 Public Brand Name

Do this next: 8.2.2 DBA Name Search

Sources

U.S. Small Business Administration, "Choose your business name" (checked October 16, 2026)
U.S. Patent and Trademark Office, "Trademark basics: What every small business should know" (checked October 16, 2026)

This page explains general rules and Bill's own experience. It is not legal, tax, or insurance advice. Talk to a qualified professional about your situation.