How to Form an LLC in Idaho Yourself (2026 Costs and Steps)

Quick answer

Filing your Certificate of Organization with the Idaho Secretary of State online costs $101 (the $100 filing fee plus a $1.00 card processing fee), plus a 2.5% transaction fee on each credit or debit card payment. By mail, it costs $120. You can file at sosbiz.idaho.gov/forms/business. Business filings are currently being processed approximately 7-10 days from the date of filing.

Step 1: Check that your LLC name is available

Search the Idaho Secretary of State's business name records before you file to ensure your desired name is available.

Step 2: Choose a registered agent

You may serve as your own registered agent if you are an Idaho resident individual with a physical street address in Idaho. P.O. boxes and commercial personal mail boxes are not acceptable for this role.

Step 3: File your Certificate of Organization - Limited Liability Company

File the Certificate of Organization - Limited Liability Company online or by mail. The filing fee is $100 if you file online, or $120 if you file by mail. Online card payments carry a $1.00 processing fee plus a 2.5% transaction fee, so filing online costs $101 plus 2.5%. The paper Certificate of Organization form offers expedited service for an additional fee. Expedited service costs $40 and provides evidence of filing within 8 working hours. Same-day service costs $100 and is available for requests submitted before 1:00 p.m. Mountain Time; requests received after that time may not be processed until the next business day.

Step 4: Create an operating agreement

Create an operating agreement to outline ownership, roles, voting procedures, and what happens if a member leaves the LLC.

Step 5: Get your EIN from the IRS

Get your Employer Identification Number from the IRS for free at https://www.irs.gov/ein.

Step 6: Keep your LLC in good standing

File an Annual Report by the close of business on the last day of the month in which the LLC was formed, each year beginning one year after formation. There is no state fee to file the annual report. You can file it online via SOSBiz; paper forms are available by request only.