Idaho LLC Name Search — Step 1 of 8
Idaho’s free SOSBiz name search is preliminary. Optional reservation lasts four months; the base fee is $20 and a manual paper filing adds $20, for $40 total. Check the filing method and current total. An inactive or dissolved entry does not itself establish availability. Confirm the actual name status with SOS before filing; acceptance, trademark rights and an assumed-business-name registration are separate questions.
Idaho’s free SOSBiz name search is preliminary. Optional reservation lasts four months; the base fee is $20 and a manual paper filing adds $20, for $40 total. Check the filing method and current total. An inactive or dissolved entry does not itself establish availability. Confirm the actual name status with SOS before filing; acceptance, trademark rights and an assumed-business-name registration are separate questions.
- Search tool
- Free
- Accepted designators
- LLC, L.L.C., L.C.
- Name reservation fee
- Optional: $20 base / $40 paper-manual
- Approved when?
- SOS filing decision; search is preliminary
- Dissolved-name hold
- Confirm actual SOS name status
- Governing law
- Idaho Code §30-21-301
- Next step
- Step 2 →
Idaho Naming Rules
Under Idaho Code §30-21-301, every Idaho LLC name must follow a few clear rules:
- Include a designator — "Limited Liability Company," "Limited Company," or the abbreviation "L.L.C.," "L.C.," or "LLC" must appear in the name.
- "L.C." is unusually accepted here — most states only allow "LLC" or "L.L.C.," but Idaho also permits the shorter "L.C." or "LC" abbreviation.
- Be distinguishable — your name can't be identical, or confusingly similar, to any other business name already on file with the Secretary of State.
- Avoid restricted words — terms implying a bank, insurance company, university, or federal agency generally require additional approval or licensing before you can use them.
- Search first — use the Idaho Secretary of State's free business entity search to confirm availability before you file.
Name Compliance Checker
Type your proposed name to check it against Idaho's core naming rules:
Reserving Your Name (Optional)
- Not required, but available — if you're not ready to file your Certificate of Organization yet, you can reserve your chosen name to lock it in temporarily.
- Most people skip this step — since your name is approved automatically the moment your Certificate of Organization is accepted, reservation is really only useful if there's a meaningful delay before you're ready to file.
- Trade name (Assumed Business Name) — if you want to operate under a different public-facing name than your LLC's legal name, file a Certificate of Assumed Business Name with the Secretary of State.
- Idaho DBAs don't expire — unlike most states, an Idaho assumed business name registration is filed once and never needs periodic renewal.
Do not infer name availability from an inactive or dissolved search result. Check the actual SOS record and applicable retention/reinstatement rules. A formatting checker does not query official availability or grant trademark clearance.
- ✓Ask whether name screening is included. The state decides name availability and filing acceptance.
- ✓Optional formation assistance; confirm filing scope, service pricing and submission responsibilities.
- ✓Confirm registered-agent eligibility, coverage, included periods and renewal charges.
- ✓Review address-use rules and privacy policies; a service does not remove all information from public filings.
Disclosure: LLC School may earn a commission via this link, at no cost to you. See our advertising disclosure.
Reservation method and preliminary availability
Idaho’s free SOSBiz name search is preliminary. Optional reservation lasts four months; the base fee is $20 and a manual paper filing adds $20, for $40 total. Check the filing method and current total. An inactive or dissolved entry does not itself establish availability. Confirm the actual name status with SOS before filing; acceptance, trademark rights and an assumed-business-name registration are separate questions.
Idaho LLC Name Search — FAQ
Ahmad Adil is the founder and CEO of LLC School. For filing and ongoing compliance, confirm the requirements with the responsible state agency. This is educational information, not legal or tax advice.
About Ahmad Adil → Idaho LLC Overview →