How Much Does the Idaho LLC Cost? (Updated: Jul. 2026)

Forming your Limited Liability Company (LLC) in Idaho requires you to file your Certificate of Organization with the Idaho Secretary of State (SOS). You must pay a one-time filing fee of $100 for online filing and $120 for mail filing.

Once approved by the SOS, you must file an Annual Report once a year so that the state maintains up-to-date business information. This is free if you file online or $20 if you file in person. Alongside this, you may need to pay several additional fees, such as obtaining your necessary taxes and business licenses.

The table below lists some of the main costs when forming and operating your Idaho LLC. Some are one-time formation costs, while others are ongoing operational requirements. These need to be paid on the required due dates in order for your LLC to remain active and in good standing with the state.

In this article, I will discuss the main Idaho LLC costs in detail. This includes the required fees, due dates, and the importance of paying them. Alongside this, I’ve provided the main details for key contact agencies if you require help when forming and maintaining your business.

How Much Does An Idaho LLC Cost?

1. Choose Your Desired LLC Name ($0)

Your first step before filing your Idaho LLC’s Certificate of Organization is to choose a unique and distinguishable business name. Alongside this, it must meet the state’s naming rules and regulations under I.C. §30-21-301.

Your desired Idaho business name must be unique and distinguishable compared to existing names already registered with the state.

Use the Idaho Business Entity Search tool to compare your desired LLC name against existing business names in the state. This allows you to confirm your name availability before submitting your formation documents.

Both choosing your LLC name and using the state tool to validate its availability are completely free.

You also do NOT need to make a name reservation before filing your LLC formation documents in Idaho. However, I highly recommend doing so if you want to delay your LLC formation date.

Read my guide on the Idaho Business Name Search if you want to learn more about how to complete your search and the different naming rules and regulations.

2. Appoint An Idaho Registered Agent ($0–$199 Annually)

Under I.C. §30-21-402, every LLC conducting business in Idaho must appoint and continuously maintain an official Registered Agent. The primary job of your agent is to receive and process important state regulatory notices, legal documents, and service of process on behalf of your LLC.

Your Idaho Registered Agent must meet two main requirements:

1. Maintain a physical Idaho street address.
2. Be available during normal business hours.

Under official state law, you can choose the following as your agent, as long as they meet the stated requirements.

• An individual: This can be yourself, a trusted friend, or a family member.
• A domestic/foreign business entity: The business must be authorized to work in the state.

You do NOT need to pay anything if you appoint yourself or another individual as your agent. However, you face several serious operational risks when doing so:

• Your Registered Agent’s full name and address will appear on the Idaho public record. This can expose your personal details to identity fraud when serving as your own agent.
• Your agent must be available during normal operating hours to receive important state notices, legal filings, and service of process. If you appoint an individual, you increase the risk of missing these important documents, meaning you have a higher chance of facing legal and compliance issues.

Read my comprehensive guide comparing the best agents in Idaho if you need help when choosing the best agent for your operating needs: Idaho Best Registered Agents.

3. File Your Certificate Of Organization ($100 – $220)

You must file your Certificate of Organization for your LLC to be officially recognized as a separate business entity in Idaho under I.C. §30-25-201. This one-time filing is your main Idaho LLC formation requirement.

Your Certificate of Organization fee is based on your chosen filing method and desired approval time. This is one of your main LLC costs in Idaho.

I’ve summarized the different potential costs in the table below:

Read my detailed guide on the Idaho Certificate Of Organization if you need help completing this important LLC formation filing.

4. Complete Your Idaho LLC Operating Agreement ($0)

An Operating Agreement is an internal business document outlining how your LLC will be run, operated, and managed. It outlines your member roles, management roles, and operational procedures. In most cases, it will discuss decision-making processes, governance, and amendment procedures. This allows flexibility in how your business operates in Idaho and is set under I.C. §30-25-105.

You do NOT need to complete and maintain an internal Operating Agreement in Idaho. Despite this, I strongly advise creating one. Once it’s signed by LLC members, it becomes legally binding and overrides default state operating rules.

Your Idaho Operating Agreement can be written, oral, or implied. Alongside this, it can consist of multiple documents, depending on your business structure and operational needs. Even so, I highly advise using a written operating agreement.

Your Operating Agreement needs to specify your LLC’s management structure. This may be:

• Member-managed: All LLC members are responsible for daily operations and have the authority to bind the LLC in contracts.
• Manager-managed: LLC members appoint one or more managers to operate the LLC. Other members act as passive investors.

You can read my comparison guide to see the main differences before picking the best structure for your operational needs: Member-Managed Vs Manager-Managed LLC.

To get started, download my FREE Idaho LLC Operating Agreement templates. Then, complete the required sections depending on your operating needs. If you need help filing them out, check my guide on the Idaho Operating Agreement.

5. Acquire Your EIN ($0)

You must obtain an EIN from the Internal Revenue Service (IRS) before beginning business operations in Idaho. Your EIN is FREE to obtain when using the official IRS website and is required to complete several important operational activities. These include:

• Opening a dedicated business bank account.
• Hiring LLC employees.
• Filing necessary federal and state business taxes.

Make sure you wait until your LLC formation documents have been officially approved before applying for your EIN. File your Certificate of Organization with the Idaho SOS first, then submit your application. The IRS requires that your business be a “legally recognized entity” before it can issue you an EIN.

Consider reading my guide on How To Get An Idaho EIN if you need a detailed breakdown.

You have two main application methods to choose from when obtaining your EIN. The best choice depends on your U.S. residency status.

6. Obtain Any Applicable Business Licenses And Permits (Varies)

With this, licensing costs vary widely and are determined by the relevant licensing agencies. Generally speaking, fees range from $50 to over $1,000. Most licenses require periodic renewal, with costs from about $25 to several hundred dollars.

You may NOT need to obtain any permits or licenses, resulting in a total licensing cost of $0.

I highly advise contacting the relevant licensing agencies to confirm your specific licensing requirements and fees.

Read my guide on the main licensing requirements if you need additional guidance: Idaho Business License Requirements.

7. Get An Idaho Seller’s Permit ($0) 

If you sell/promote taxable goods/services, have a business presence in Idaho, or meet certain thresholds, you may need to pay Idaho’s 6% state Sales Tax. To do this, you first need to obtain a seller’s permit from the Idaho State Tax Commission.

It’s completely FREE to get an Idaho seller’s permit. 

You can also register for other tax types during the registration process. Therefore, I advise checking the official guide first. Alternatively, use the Business Wizard tool to figure out your required taxes and registrations.

Read my dedicated article for step-by-step guidance on obtaining your Idaho seller’s permit: Idaho Seller’s Permit.

8. Finish Your LLC Annual Report Filing ($0 Or $0 + $20 Manual Processing Fee)

Under I.C. §30-21-213, every Idaho LLC operating in the state must file an Annual Report once a year with the SOS. This keeps the state up-to-date with your current business information. You may face penalties and potential administrative dissolution if you fail to file your Annual Report on time.

Your filing fee depends on your chosen filing method:

• Online: $0. 
• In-person (paper form): $0 + $20 manual processing fee.

You must submit your Annual Report by the end of your anniversary month each year. Your first report is due the year after your LLC is formed.

Example: Your LLC was approved on April 15, 2026:

• Your anniversary month is April.
• Your report is due by April 30 every year.
• Your first report is due by April 30, 2027.
• Your report is then due by April 30 every year thereafter.

Learn more about this important requirement here: Idaho Annual Report. 

9. Complete Your Idaho LLC Tax Responsibilities (Varies)

Your LLC must meet several ongoing tax obligations after registering with the Idaho Department of Revenue. These primarily depend on your operating location and industry.

a. Federal Taxes

You may need to pay several taxes at the federal level:

• Federal income tax: This depends on your tax treatment.
• Payroll taxes: This applies to LLC members.
• Self-employment taxes: This must be paid if you have employees in your LLC.

b. State-Level Tax

Your business earnings and activities primarily determine your state-level tax requirements:

• Income tax: Most LLCs are treated as pass-through entities. Income is taxed at a flat 5.3%.
• Employer taxes: LLCs with employees must withhold state income tax and pay unemployment insurance (UI) taxes.
• Personal property tax: LLCs must report property annually. However, many qualify for exemptions.

c. Local-Level Taxes

You may need to pay local taxes in addition to your federal and state-level taxes. These are imposed by the cities and counties that you operate in:

• Real property tax: LLCs with real estate must pay county property taxes. Rates are set by local districts.
• Business personal property (BPP) tax: This applies to business assets like equipment and machinery.

Idaho LLCs Essential Contact Details

You can contact the two state agencies listed below if you need help during your LLC formation and operational procedures. Choose the right one based on your operating needs.

1. Idaho SOS Office Contact Information

Contact the Idaho SOS – Business Services if you’re unsure of how to choose a desired LLC name, file your Certificate of Organization, or complete your Annual Report filing.

• Phone: (208) 334-2301
• Office address:
  450 N. 4th Street
  Boise, ID 83702
• Mailing address:
  P.O. Box 83720
  Boise, ID 83720-0080
• Hours: Monday to Friday: 8 A.M. to 5 P.M.

2. Idaho State Tax Commission Contact Information

Contact the Tax Commission if you have further questions regarding your seller’s permit registration.

• Phone: 
  (208) 334-7660 in the Boise area
  (800) 972-7660 toll-free
  (800) 377-3529 Idaho Relay Service (TDD) for hearing-impaired callers
• Mailing address:
  PO Box 36
  Boise, ID 83722-0410
• Office: see the Office Locations and Hours page. 
• Working hours: Monday to Friday, 8 A.M. to 5:00 P.M. Mountain Time (The call center is closed 8 A.M. to 9:30 A.M. for training on the 2nd Wednesday of the month).

Frequently Asked Questions