Idaho lesson 1 of 6
Name your Idaho LLC
SOSBiz checks a proposed name against the Secretary of State's records when you submit the Certificate of Organization, but a manual search first avoids a rejected filing and the delay of resubmitting.
Required wording
An Idaho LLC name must contain the words limited liability company or an abbreviation such as L.L.C. or LLC. Limited may be shortened to Ltd. and Company to Co.
- Acceptable: Sawtooth Fabrication LLC, Sawtooth Fabrication, L.L.C.
- Not acceptable: wording implying the LLC is a bank, trust company or government agency without the required authorization
- Certain regulated terms may need approval from the relevant Idaho licensing board before the name is accepted
Checking availability
Search the Secretary of State's business entity database on SOSBiz before you file. Idaho requires a proposed name to be distinguishable from names already on record, and minor differences in punctuation or a generic designator such as LLC are usually not enough to separate two names.
If you want to hold a name before you are ready to file the Certificate of Organization, Idaho allows a name reservation with the Secretary of State; confirm the current reservation fee and reservation period on SOSBiz before submitting.
Operating under a name different from the one on your Certificate of Organization requires registering an assumed business name with the Secretary of State, which is a separate filing from the Certificate itself.
🇺🇸 Check United States company name availability
Search the official United States state registry before you file. Opens the government portal in a new tab.
Tip: also confirm the .com domain and matching social handles are free before you commit.
Key takeaways
- End the name with LLC, L.L.C., or limited liability company in full.
- Search the Secretary of State's business database on SOSBiz before filing.
- A separate assumed business name filing is needed if you trade under a name different from your Certificate.
Official sources
Or let us file your Idaho LLC for you
Everything above is yours to use for free. If you would rather hand it over, we prepare and file the Certificate of Organization, act as your registered agent, and track your ongoing deadlines.
Last reviewed: September 2026 - reviewed by Gullia Filing Legal & Formation Team