IDIdaho Secretary of State, Business Services

Idaho business entity search

Compiled October 2026 from the official sources listed below. Confirm fees with the agency before you file.

Short answer: search Idaho companies for free on the SOSbiz Business Search, by name or file number. Forming an LLC costs $100, and keeping it on file averages $0 a year in state fees.

Idaho charges nothing for its annual report when filed on time, which makes it one of the cheapest states to keep an LLC active. The SOSbiz search covers entities and assumed business names together.

Name checkID records

We copy the name, list the variations Idaho may treat as the same, and give you the official SOSbiz Business Search link to confirm it.

  1. Search by name or file number. Advanced search lets you filter by entity type and status.
  2. Assumed business names (DBAs) show in the same search, so you see both legal names and trade names in one pass.
  3. Check the "Annual Report Due" date on the record; Idaho sends reminders to the email on file only.

Open the official Idaho search

Idaho SOS, corporation and LLC search

Idaho Secretary of State Business Search

The Idaho Secretary of State business search is run by the Idaho Secretary of State, Business Services through its SOSbiz Business Search. Related queries such as "ID SOS business search" reach the same free database. Search by name first, then reopen the record by its file number so you are reading one exact entity. The step-by-step instructions above walk through the screens.

Idaho Entity Search

An entity search of the Idaho business registry returns every registered type at once: domestic and foreign LLCs, corporations, partnerships and nonprofits. Read the status first, then the formation date and the registered agent. Because Idaho expects an annual report yearly, a lapsed filing usually shows up as a status change before the entity is dissolved.

Idaho Corporation Search

A corporation search uses the same index as LLCs, so filter by entity type if the name is common. Searches typed as "Idaho company search" land here too. The record shows whether it is a for-profit corporation or a nonprofit, and the entity types guide explains how each one appears. Corporations are formed by filing articles of incorporation, so the formation date on the record is the date those articles took effect.

Idaho LLC Search

Run the Idaho LLC search with the exact name, then note the file number. Forming an Idaho LLC costs $100, and the annual report carries no flat fee. Whether members appear depends on the filings; our LLC lookup guide covers what the state shows, and the business owner lookup covers what it does not. A state record never shows an EIN; use the EIN lookup for that.

Idaho Business Name Search

An Idaho business name search shows names already on file, not names the state will accept. Idaho lets you hold a name for 120 days for $20. The name claim guide lists the checks to run before you file, including trademarks and DBA names.

Idaho Business License Search

An Idaho entity record is not a business license. Licenses come from the state board for a regulated trade or from the city or county where the business operates, so check those separately. The business verification checklist lists which official records to pull and in what order.

Free annual reports

Idaho charges nothing for its annual report when filed on time, which makes it one of the cheapest states to keep an LLC on file after the $100 formation fee. The report is due by the end of the anniversary month, and Idaho sends reminders to the email address on file, so keep that address current.

Idaho filing facts

Record numberFile number
LLC formation fee$100. Certificate of Organization filed online.
Recurring filingAnnual report, $0, yearly
DueEnd of the anniversary month. No fee if filed on time.
Name reservation$20 for 120 days
Agency phone208-334-2301

What an Idaho LLC costs in its first three years

First recurring filing assumed in year 2; state charges only.

YearFormationRecurring filingTotal
Year 1$100$0$100
Year 2$0$0$0
Year 3$0$0$0
Three-year state total$100

One search for legal names and assumed names

The SOSbiz search returns entities and assumed business names together, so you can see whether a brand is already claimed by another business in the same pass. Idaho does not sell or publish its register in bulk, listed with other states in data downloads by state. An entity that misses its report is administratively dissolved after a notice period and can reinstate, but the gap shows in the filing history, which is worth reading when you verify a business.

Keeping an Idaho LLC alive for almost nothing

After the $100 formation fee, an Idaho LLC that files its annual report on time pays no further state filing fees. The main costs are a registered agent if you do not use your own address, and any local licenses. Because the report is free but mandatory, the most common way Idaho LLCs fall out of good standing is simply forgetting it.

How Idaho compares with its neighbors

StateLLC filingYearly upkeepReport cycleReservation
Idaho$100$0Yearly$20
Montana$35$20Yearly$10
Utah$59$18Yearly$22
Oregon$100$100Yearly$100

Before you rely on an Idaho result

  • An entity that misses its annual report is administratively dissolved after a notice period.
  • Idaho uses a reporting month tied to the formation month, not a calendar deadline.

Bulk Idaho business data

Not offered.

Searching beyond Idaho

Registries next to Idaho: Montana business search, Utah business search, Oregon business search.

Idaho business search questions

How much does it cost to form an LLC in Idaho?

The state filing fee is $100. Certificate of Organization filed online. Keeping the LLC on file then averages $0 a year in state fees.

When is the Idaho annual report due?

Idaho calls it the annual report. There is no filing fee, it is filed yearly, and it is due end of the anniversary month. No fee if filed on time.

Can I reserve a business name in Idaho?

Yes. A name reservation costs $20 and holds the name for 120 days.

Is there a fee for the Idaho annual report?

No, Idaho annual reports are free when filed on time by the end of the anniversary month.

Is the Idaho business entity search free?

Yes. Searching the SOSbiz Business Search costs nothing. The Idaho Secretary of State, Business Services charges only for certified copies and certificates of good standing.

Who keeps business records in Idaho?

The Idaho Secretary of State, Business Services. Its business line is 208-334-2301, and its free search is the SOSbiz Business Search.

What number identifies a business in Idaho?

Idaho assigns each entity a file number. It is different from the federal EIN and from the number the same company holds in any other state, and searching by it returns exactly one record.

Can I download a list of all Idaho businesses?

No bulk download is offered. Individual records can still be searched for free.

Sources

  1. Idaho Secretary of State, Business Services
  2. Idaho SOSbiz search

Data Updated Recently