How to Form an LLC in Idaho (2026)

Idaho LLC Overview

Idaho is a hidden gem for LLC formation. While it charges $100 for filing, the state requires no fee for its annual report — making ongoing costs effectively zero.

Boise has emerged as one of America's fastest-growing tech hubs, attracting entrepreneurs from higher-cost states. Idaho's economy also thrives on agriculture, manufacturing, and outdoor recreation.

Idaho's 5.695% flat income tax is the main consideration. For non-residents with no Idaho operations, this does not apply. Arizona ($50, $0/year) is cheaper upfront, but Idaho's $0 annual cost matches it ongoing.

Idaho LLC Costs and Fees

All fees below are sourced from the Idaho Secretary of State fee schedule.

Step-by-Step: How to Form a Idaho LLC

Step 1: Choose your LLC name

Search for available names on the Idaho Business Entity Search. Your name must include "Limited Liability Company," "LLC," or "L.L.C." Ensure the name is distinguishable from existing entities on file.

Step 2: Appoint a registered agent

Every Idaho LLC must have a registered agent with a physical street address in Idaho. The agent must be available during normal business hours to accept legal documents on behalf of the LLC.

Step 3: File Certificate of Organization

File online through the Idaho Secretary of State. The filing requires:

• LLC name with designator
• Registered agent name and Idaho address
• Principal address
• Mailing address
• Name and address of organizer(s)
• $100 filing fee

Step 4: Create an Operating Agreement

While not always legally required in Idaho, an Operating Agreement is essential for banking, tax compliance, and internal governance. It establishes member rights, profit distribution, and management structure. We include a custom Operating Agreement in every formation package.

Step 5: Obtain an EIN

Apply for an Employer Identification Number (EIN) from the IRS. This is your LLC's tax ID number, required for banking, hiring, and tax filings. Online application is available for those with an SSN; fax or mail application for international applicants without an SSN.

Step 6: Register for Idaho taxes (if applicable)

If you will sell taxable goods or services in Idaho, register with the Idaho Department of Revenue for applicable tax accounts including sales tax and income tax withholding if you have employees.

Annual Compliance Requirements

1. Annual report: Due during anniversary month. Fee: $0 (free). Must still file or face dissolution.
2. Federal tax filing: Form 5472 with pro forma 1120 for foreign-owned LLCs.
3. Idaho income tax: 5.695% flat rate on Idaho-sourced income.
4. Sales tax: 6% statewide.
5. Registered agent: Maintain agent with ID address.
6. FinCEN BOI Report: Required.

Idaho Taxes for LLCs

Idaho's free annual report makes it one of the cheapest for ongoing maintenance. Non-residents with no Idaho operations pay nothing annually.

Processing Times

Idaho offers affordable expedited processing at just $20.

Pros and Cons of a Idaho LLC

Our Pricing: Idaho LLC Formation

Every formation package includes:

• Certificate of Organization filing with Idaho Secretary of State
• One year of registered agent service in Idaho
• Custom Operating Agreement
• EIN application
• Banking introduction letter
• Digital document delivery within 24 hours of state approval
• Compliance calendar with all filing deadlines
• Dedicated support via email and WhatsApp

Over five years: $100 in state fees ($100 filing + $0/year). One of the cheapest. Compare with Arizona ($50) or Wyoming ($510).

Comparing states? Read our Wyoming vs Delaware comparison guide for the full breakdown of top formation states.