Most people fall in love with a name before they check whether it’s taken — and that order of operations causes a lot of wasted time and money. Here’s how to do it the other way around, so you can commit to a name with confidence.

Why does “available” mean different things in different states?

When you form an LLC or corporation, your business name is registered at the state level, not nationally. That means “Sunrise Painting LLC” can exist simultaneously in Ohio and in Texas — they’re separate legal entities in separate jurisdictions, and neither blocks the other from forming. But within a single state, two entities cannot hold the same name, and most states extend that protection to names that are merely deceptively similar. California, for example, will reject a new filing for “Acme Consulting Inc.” if “Acme Consultants Inc.” already exists in the California Secretary of State database.

This is why a business name search has to happen state by state. If you’re forming in Florida, you search Florida’s Division of Corporations. If you later expand and register as a foreign entity in Georgia, you search Georgia’s database too — and you may need a different operating name there if a conflict turns up. The rules are parallel but not identical, which is where most people get tripped up.

Where exactly do you run a name availability search?

Every state maintains a searchable database of registered business entities, and in most cases it’s free and publicly accessible. The authoritative starting point is each state’s Secretary of State website. Texas uses the Texas Secretary of State SOSDirect system. Florida’s is the Sunbiz.org portal, run by the Division of Corporations. New York routes you through the NY Department of State Division of Corporations entity search. You can find direct links to every state’s search tool through the USA.gov state resources directory, which aggregates official state government contacts in one place.

When you search, don’t just type the exact name you want. Search the most distinctive word in your proposed name — if you want “Blue Ridge Roofing LLC,” search “Blue Ridge” to catch all variations. Some databases also let you filter by entity type or status, so you can exclude dissolved companies; a dissolved LLC generally frees up its name, but rules vary. In California, a name that belonged to a dissolved corporation can still be protected for a period after dissolution, so it pays to check the entity’s status, not just its existence.

What are the actual entity name rules that can get your filing rejected?

Beyond uniqueness, states impose a second layer of requirements that trip up first-time filers constantly. These are called entity name rules, and they cover three main areas: required designators, restricted words, and prohibited content.

Required designators mean your name must include a word or abbreviation that signals its legal structure. An LLC typically needs “LLC,” “L.L.C.,” or “Limited Liability Company” somewhere in the name. A corporation needs “Inc.,” “Corp.,” “Incorporated,” or “Corporation.” Omit that and the filing gets rejected automatically. Restricted words are terms that imply a regulated industry. Most states prohibit using “Bank,” “Insurance,” “University,” or “Trust” in a business name without prior approval from the relevant regulatory agency — you’d need the state banking regulator’s sign-off before calling your company “Lakeview Trust LLC.” Prohibited content covers anything obscene or anything that falsely implies government affiliation; you can’t name your landscaping company “U.S. Federal Lawn Services” and suggest a connection to the federal government.

How close is too close? Understanding the “deceptively similar” standard

This is the gray zone that catches people who think they’ve been clever. States don’t require an exact match to block a name — they look at whether an ordinary person could confuse the two entities. The analysis usually focuses on the distinctive portions of the name, not the generic ones. “Consulting,” “Services,” “Group,” and “Solutions” are considered generic; states largely ignore them in similarity comparisons. So “Apex Solutions LLC” and “Apex Group LLC” might both be rejected in the same state if “Apex” is the only distinctive element and both companies operate in the same industry.

The practical implication: if your search returns anything with the same core word, read the full name carefully and note the industry. Some state filing offices will make a judgment call; others apply a mechanical rule. Delaware is known for a relatively permissive standard — it focuses more on exact character-for-character duplication. California is notably stricter. If you’re filing in a stricter state and you’re unsure, you can often submit a name availability request in writing before you file your full formation documents, which saves you the filing fee if the name gets rejected.

Does a state registration protect your name from competitors in other states?

No — and this is the most important thing to understand about the limits of a business name search. Registering “Maple Street Media LLC” in Illinois gives you the exclusive right to that name in Illinois. It does not give you a trademark. It does not stop someone in Oregon from forming “Maple Street Media LLC” in Oregon. And it does not stop someone who already holds a federal trademark on “Maple Street Media” from sending you a cease-and-desist letter, even if your state registration came first.

If your business has any ambition to operate across state lines or online — and most do — a federal trademark search through the USPTO’s TESS database is an essential second step. A state entity search tells you whether you can file paperwork; a trademark search tells you whether you can actually use the name without legal exposure. These are two different questions, and conflating them is an expensive mistake.

What about trade names, DBAs, and assumed names?

Not every business operates under its legal entity name. A sole proprietor, partnership, LLC, or corporation can register a “doing business as” (DBA) name — also called a trade name, fictitious business name, or assumed name depending on the state. In most states, DBAs are registered at the county level rather than with the Secretary of State, and the availability rules are looser. Texas, for instance, registers assumed names at the county clerk’s office, and the same assumed name can exist in multiple Texas counties simultaneously.

This matters for directories and listings. When you list your business on platforms like Manta, Google Business Profile, or local directory sites, the name you use publicly might be your DBA, not your legal entity name. Both names need to be checked — the legal entity name through the Secretary of State to ensure your formation is valid, and the trade name through the relevant county or state office to ensure your DBA registration doesn’t conflict with an existing one. Running your business under an unregistered trade name in a state that requires registration can result in fines and the inability to enforce contracts in that name.

What’s the fastest way to check everything at once?

There is no single database that covers all fifty states simultaneously, but there are practical shortcuts. Many registered agents — companies like Northwest Registered Agent or Incfile — offer free name search tools that pull from multiple state databases at once. These are useful for a quick first pass, but always verify directly on the official Secretary of State site before you file. Third-party tools sometimes lag behind real-time state data by days or weeks, and a name that shows as available on an aggregator might already be taken in the official system.

A realistic checklist looks like this: (1) Search the Secretary of State database in your formation state. (2) Search the USPTO trademark database. (3) Run a basic web search and check whether the domain name is available. (4) Search social media handles. Steps three and four don’t have legal weight, but discovering that your chosen name is already a well-known brand online — even an informal one — can save you from building an audience on a name you’ll have to abandon later. Do all four before you spend a dollar on logos, business cards, or directory listings.

Can you reserve a name before you’re ready to file?

Yes, and it’s worth doing if there’s going to be any gap between now and when you actually form the entity. Most states allow you to reserve a name for a fee that typically runs between $10 and $50, and the reservation holds the name for anywhere from 60 days (common in states like Colorado and Virginia) to 120 days (New York) to 180 days in a handful of others. The reservation is not a registration — it doesn’t create a legal entity — but it blocks anyone else from filing that exact name while you get your paperwork together. If you’ve done your search, found a name that’s clear, and you’re not quite ready to file, a reservation is cheap insurance.