How to Name Your Indiana LLC
Learn the naming rules for an Indiana LLC — required designators, name availability search through INBiz, DBA filing, and how to reserve or change your name.
Bizee Editorial Staff
Editorial Team
Indiana LLC naming — key facts
Filing fee: [STATE_FEE]
Processing time: [PROCESSING_TIME]
State agency: Indiana Secretary of State, Business Services Division
Annual report due: [ANNUAL_REPORT_DUE]
State tax rate: [STATE_TAX_RATE]
Indiana LLC naming rules
To name your Indiana LLC, your name must be distinguishable from all other business entities on file with the Indiana Secretary of State, include a required LLC designator like "LLC" or "Limited Liability Company," and pass a name availability search through the INBiz portal before you file your Articles of Organization.
Indiana LLC naming rules
Indiana requires that your LLC's legal name be distinguishable from every other business entity already on file with the Secretary of State. That includes both formal entity names and assumed business names (DBAs) that other businesses have registered.
One thing that catches people off guard: adding or removing an LLC designator does not make a name distinguishable on its own. If "Hoosier Roofing" is already registered, "Hoosier Roofing LLC" won't pass the distinguishability test.
Indiana does not impose additional unique naming restrictions beyond the general rules that apply to all LLCs. The core requirements are distinguishability and the required designator.
How to check Indiana business name availability
Indiana uses the INBiz system, operated by the Indiana Secretary of State, as the official portal to check name availability. You can search by business name, business ID, filing number, or registered agent name.
To run a name availability search, log in to your INBiz account, go to Online Services, and under the Secretary of State section select "Business Name Availability." The public search interface at INBiz also lets you search existing entities without logging in — useful for a quick first check before you commit to a name.
After your search returns results, click on a specific Business ID to review that entity's details. This helps you judge whether your proposed name is genuinely distinguishable — not just different by a word or punctuation mark.
Required LLC name designators
Indiana law requires every LLC name to include one of the following designators: "Limited Liability Company," "LLC," or "L.L.C." In practice, "LLC" is the most common choice. The designator is almost always placed at the end of the name.
Indiana also prohibits using corporate suffixes like "Corp." or "Inc." in an LLC name. Those designators are reserved for corporations, and using them in an LLC name would be misleading about the entity type.
Indiana DBA (assumed business name)
If you want to run your Indiana LLC under a name different from its legal name, you'll need to file a Certificate of Assumed Business Name — commonly called a DBA or "doing business as" — with the Indiana Secretary of State. LLCs file at the state level through INBiz, not at the county level.
Before filing a DBA, search INBiz to confirm the assumed name isn't already registered as a legal name or another entity's assumed name. Indiana's distinguishability standard applies to DBAs too, so a name that's already on file — in any form — won't be approved.
Trademarks and name protection
Clearing your name through INBiz only confirms it's available in Indiana's state database. It does not check federal trademark registrations. If another business holds a federal trademark on a similar name, using it could put you on the hook for infringement — even if the state approved your filing.
Before you finalize your name, run a search in the USPTO's trademark database at uspto.gov/trademarks/search. If you want to protect your own name nationally, talk to a legal professional about filing a federal trademark application.
How to change your Indiana LLC name
To change your Indiana LLC's legal name, file Articles of Amendment to the Articles of Organization with the Indiana Secretary of State through INBiz. The form requires your current name as it appears on state records and your proposed new name.
If you prefer to file on paper, mail the completed Articles of Amendment form and the filing fee to the Indiana Secretary of State, Business Services Division, 302 West Washington Street, Room E-018, Indianapolis, IN 46204. Filing online through INBiz is faster.
FAQ
Use the INBiz portal at inbiz.in.gov to search Indiana business name availability. You can search the public database without logging in, or log in to your INBiz account and select "Business Name Availability" under the Secretary of State section for a more targeted check.
After your results load, click on a Business ID to review that entity's details. This helps you judge whether your proposed name is genuinely distinguishable, not just different by a word or punctuation mark.
Yes. Your Indiana LLC name must be distinguishable from all other business entities on file with the Indiana Secretary of State, and it must include a required designator — "LLC," "L.L.C.," or "Limited Liability Company." Adding or removing a designator alone does not make a name distinguishable.
Indiana does not impose additional unique naming restrictions beyond these general rules. You also can't use corporate suffixes like "Corp." or "Inc." — those are reserved for corporations.
Yes. You can run your Indiana LLC under a different name by filing a Certificate of Assumed Business Name — also called a DBA — with the Indiana Secretary of State through INBiz. LLCs file at the state level, not at the county level.
Before filing, search INBiz to confirm the assumed name isn't already registered. Indiana's distinguishability standard applies to DBAs, so a name already on file in any form won't be approved.
Yes. The Indiana Secretary of State allows you to reserve a business name for 120 days through INBiz. This holds the name while you prepare your formation documents, so another business can't register it in the meantime.
File Articles of Amendment to the Articles of Organization with the Indiana Secretary of State through INBiz. The form requires your current LLC name as it appears on state records and your proposed new name. You can also download the paper form from the IN.gov forms library and mail it to the Business Services Division.
No. Registering your name with the Indiana Secretary of State only confirms it's available in the state database. It does not give you trademark rights or prevent someone else from using a similar name in another state or at the federal level.
To protect your name nationally, search the USPTO trademark database at uspto.gov/trademarks/search and talk to a legal professional about filing a federal trademark application.
