How Much Does an LLC Cost in Idaho?

Published by Jon Morgan | Co-Founder & Chief Editor

Last updated: August 19, 2026

FACT CHECKED by Lou Viveros, Growth & Transition Advisor

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Starting an LLC in Idaho costs $100 if you file the Certificate of Organization online. It costs $120 if you file by mail. That gap comes from a flat $20 manual-processing fee. The state charges it on every paper filing, and online filers skip it entirely.

Beyond formation, most Idaho LLCs pay for a registered agent each year, unless you serve as your own. Add the state's flat income tax on any profit. Some businesses also need an industry or city license, priced by whoever issues it. The annual report itself is free, so keeping your LLC in good standing costs nothing on its own.

This guide breaks every cost down by how often you pay it. One-time costs come first, then recurring costs, then optional extras. That way you can budget the whole picture before you file.

Quick Summary

One-Time Costs to Form an LLC in Idaho

Idaho's one-time costs are the fees you pay once, mostly during formation. A few, like certified copies, come up again only if you need them later.

1. Certificate of Organization Filing Fee ($100 Online / $120 Paper – Mandatory)

The Certificate of Organization costs $100 online. File it through the Idaho Secretary of State's SOSBiz portal. Filing by mail or in person adds a flat $20 manual-processing fee. That brings the paper total to $120.

You can also pay extra for faster service. Expedited processing adds $40 and typically finishes within 8 business hours. Same-day service adds $100, but the state must receive your request by 1 p.m. Mountain Time or it may not process until the next business day.

Standard filings currently take roughly 7 to 10 days from the date you file, though that number moves with filing volume. Check the SOSBiz Processed Through Date page for the current estimate before you file, or see our guide on how long it takes to form an LLC in Idaho for the full timeline breakdown.

2. Name Reservation Fee ($20 Online / $40 Paper – Optional)

Not ready to file yet but want to lock in a business name. Idaho lets you reserve one for four months. The name reservation form costs $20 online. Paper filings run $40 once the manual-processing fee is added.

Skip this step if you're filing your Certificate of Organization right away. Most delays happen for two reasons: the requested name is already taken, or it skips a required LLC designator. Check name availability in SOSBiz before you file either document.

3. Business License (Varies – Mandatory If Applicable)

Depending on your industry, you may need a business license. It can come from the state, your county, or your city. Idaho has no single statewide general business license. The cost and the requirement itself vary by what you do and where you're located.

A restaurant, a contractor, and a home-based consultant in the same city can face three different licensing rules. Check with your city or county clerk's office first. Then check any state licensing board for your profession. Don't assume no license applies to you until you've checked both.

4. Certified Copies ($10 + $0.25 Per Page – Optional)

Banks, lenders, and out-of-state agencies sometimes ask for a certified copy of your formation paperwork. A plain printout won't satisfy them. Order one through the Secretary of State's Certificate Request form for $10 plus $0.25 per page. That covers your original filing and every amendment on record.

5. Certificate of Existence ($10 – Optional)

A Certificate of Existence, sometimes called a certificate of good standing, confirms your LLC is registered and current with the state. It costs $10 and uses the same Certificate Request form as certified copies. You'll typically need one when you apply for a business loan, open certain bank accounts, or qualify to do business in another state.

You don't need one to operate day to day. It's a document you order only when a third party specifically asks for it.

6. Doing Business As (DBA) Registration ($25 Online / $45 Paper – Optional)

You can operate or accept payments under a name other than your official LLC name. File for a DBA, also called an assumed business name, for a $25 filing fee online. Paper filings run $45 with the surcharge included.

It also lets you open a business bank account under that assumed name. You can receive checks and payments the same way.

Recurring LLC Costs in Idaho

Recurring costs are the ones you pay again every year, or that keep coming up while your LLC stays active.

7. Annual Report ($0 – Mandatory)

Idaho LLCs file an annual report with the Secretary of State every year, and it's free. File it online through SOSBiz. You can also request a paper form by contacting the office directly, since paper annual report forms aren't posted for download.

Miss the deadline and Idaho can administratively dissolve your LLC. You can reinstate through SOSBiz if that happens, but it's far simpler to just file on time every year.

8. Registered Agent Fee ($80 to $300 Annually – Optional)

Idaho law requires every LLC to keep a registered agent at a physical Idaho street address, and a P.O. box doesn't qualify. You can act as your own agent for free, or name a trusted employee or friend who lives in-state.

Many owners skip that route because they don't want their home address on public record. They hire a registered agent service in Idaho instead, which typically runs $80 to $300 a year.

9. State Income Tax (Mandatory)

Idaho automatically treats your LLC as a pass-through business. Only the members file returns and pay tax on their share of the profit. That default keeps things simple, but you do have other options: elect corporate tax treatment instead, and your LLC owes Idaho's 5.3% corporate income tax on its earnings [1].

Left as the default pass-through setup, members instead pay the same 5.3% rate on their share of the profit, this time on their individual returns per the Idaho State Tax Commission's individual income guide.

Pay late, and the state adds a 0.5% penalty on the unpaid amount. That charge repeats every month the balance stays open.

10. Business Insurance (Varies – Conditional)

Idaho doesn't require general business insurance for most LLCs. There's one exception, per the state's own business insurance guidance. Workers' compensation coverage is mandatory the moment you have any employee, full-time or part-time.

Coverage is optional with no employees, but still worth carrying. General liability policies typically run $400 to $1,500 a year for a small business. Professional liability coverage averages around $56 a month. Many commercial leases and client contracts require proof of coverage before you sign.

Optional and Closing LLC Costs in Idaho

These last two items aren't required by the state. Most LLC owners still end up paying for at least one of them.

11. Operating Agreement ($0 to $300 – Optional but Recommended)

An operating agreement spells out how your LLC runs day to day. It covers who owns what share and how decisions get made.

Idaho doesn't file this document or require it. Skip it, though, and Idaho's default state rules govern your LLC instead. Those rarely match what you and your co-owners actually intended.

You can draft one yourself for free using a template (see the cost table above). Or hire an attorney to draft one for $100 to $300 on a simple single-member LLC.

12. EIN / Federal Tax ID Number ($0 – Recommended)

Once you've filed your Certificate of Organization and finished forming your LLC in Idaho, apply for an Employer Identification Number from the IRS. It's free. The IRS uses it to track your business's tax activity, the same way a Social Security number tracks a person's.

Apply online at IRS.gov and you'll get your EIN right away. Or mail in Form SS-4 if you'd rather file on paper. Either way, you need it before you can open a business bank account or hire employees, and it costs nothing. For a wider view of what you'll spend, see our full breakdown of LLC costs by state.

FAQs

References:

1. https://law.justia.com/codes/idaho/title-63/chapter-30/section-63-3025/