Idaho has been one of the fastest-growing states in the country, with new residents and businesses flowing into Boise, Coeur d’Alene and beyond. Its LLC rules are simple and cheap: $100 to form online and a free annual report. The only real trap is that free report, because owners forget it.
What an Idaho LLC costs
Table of Contents
| Item | Cost | When |
|---|---|---|
| Certificate of Organization | $100 online; $120 on paper | At formation |
| Annual report | Free | By the end of your anniversary month, each year |
| Assumed business name (if using a DBA) | Small state fee | When registering |
| Seller’s permit (if selling taxable goods or services) | No fee | Before your first taxable sale |
| Contractor registration (if applicable) | State fee | Before doing construction work |
Step 1: Choose your LLC name
The name must include "limited liability company", "limited company", "LLC", "L.L.C.", "LC" or "L.C." and be distinguishable from other names on file. Search the Secretary of State’s business records in SOSBiz, then check federal trademarks, domains and social handles with our business name checklist.
To trade under another name, file a certificate of assumed business name with the Secretary of State.
Step 2: Appoint a registered agent
Every Idaho LLC needs a registered agent with a physical Idaho address, available during business hours. You can serve yourself, name another adult or use a commercial agent.
Step 3: File the Certificate of Organization on SOSBiz
File a Certificate of Organization with the Idaho Secretary of State online through SOSBiz for $100, or on paper for $120. You’ll include the LLC’s name, registered agent, principal office and mailing addresses, and the name and address of at least one member or manager. Online filings are usually processed quickly.
Step 4: Create an operating agreement
Idaho doesn’t require you to file an operating agreement, but every LLC should have one, covering ownership, management, profit sharing and what happens when members join or leave.
Step 5: Get an EIN and open a bank account
Apply for a free EIN from the IRS online, then open a business bank account using your filed Certificate and EIN. See choosing a business bank account.
Step 6: Register for state taxes
Register with the Idaho State Tax Commission through its business registration system for:
- A seller’s permit, if you sell taxable goods or services. Idaho’s state sales tax is 6%, and some resort cities add local taxes.
- Employer withholding, if you hire.
Employers also register with the Idaho Department of Labor for unemployment insurance. Idaho’s combined business registration covers several agencies in one application.
Step 7: Get licenses and registrations
- Contractors generally must register with the state’s occupational and professional licensing division before doing construction work, and public works contractors need a separate license. Electricians, plumbers and HVAC trades have their own licenses.
- Many professions are licensed through state boards.
- Cities and counties handle zoning, permits and some business licenses.
Step 8: File your free annual report
Every Idaho LLC files an annual report with the Secretary of State by the end of its anniversary month, starting the year after formation. It’s free, and it confirms your registered agent, addresses and managers or members. The state sends a reminder, but because there’s no fee, it’s easy to overlook. An LLC that doesn’t file can be administratively dissolved.
How an Idaho LLC is taxed
By default, LLC profits pass through to the owners, who pay federal income tax, self-employment tax and Idaho’s flat personal income tax, which the state has reduced in recent years. Multi-member LLCs taxed as partnerships file an Idaho partnership return. Idaho also lets eligible pass-through entities elect to pay tax at the entity level. LLCs electing C corporation status pay Idaho corporate income tax. Ask a tax professional which option suits you.
Hiring your first employee in Idaho
Beyond the federal steps in our first employee guide, Idaho employers generally:
- Register for withholding with the Tax Commission and unemployment insurance with the Department of Labor.
- Carry workers’ compensation insurance, required once you have employees.
- Report new hires to the state.
Your Idaho LLC compliance calendar
| Deadline | Filing | Paid to |
|---|---|---|
| End of your anniversary month, yearly | Annual report (free) | Secretary of State |
| Monthly, quarterly or yearly | Sales tax returns | Idaho State Tax Commission |
| As assigned | Employer withholding, if you have employees | Idaho State Tax Commission |
| Quarterly | Unemployment insurance reports, if you have employees | Department of Labor |
| Yearly, if applicable | Contractor registration renewal | Licensing division |
Example: state costs for your first two years
For a single-member LLC filing online:
| Year 1 | Year 2 | |
|---|---|---|
| Certificate of Organization | $100 | — |
| Annual report | — | $0 |
| State total | $100 | $0 |
Add contractor registration, local licenses and any professional license. Use our startup cost calculator to plan.
Keeping a free report from slipping
Free filings are the easiest to forget, and Idaho dissolves LLCs that miss them. A simple routine:
- Create a SOSBiz account and link your LLC, so you can file the report in a few minutes and see its due date.
- Put a reminder in your calendar at the start of your anniversary month every year.
- Keep the email address on file current, since reminders are sent electronically.
- Update your details whenever they change, such as a new registered agent, address or manager, without waiting for the annual report.
- Check your status before big moments, like applying for financing, signing a lease or bidding on a contract.
If your LLC has been dissolved, Idaho generally allows reinstatement by filing the missing reports, but you’ll lose good standing in the meantime.
Starting a business in a fast-growing state
Idaho’s growth brings opportunity and competition. A few things to keep in mind:
- Housing and construction demand has been strong, but so has competition among trades. Licensing, reviews and reliability set businesses apart. See our home services industry profile.
- New residents need services: cleaning, landscaping, pet care, childcare and home repair. See our business idea finder.
- Hiring can be competitive in fast-growing areas, so budget realistically for wages.
- Outdoor recreation and tourism support guiding, rental and hospitality businesses, which may need land-use permits.
Idaho rules for common types of business
Food businesses. Restaurants and food trucks are licensed by Idaho’s regional public health districts. Idaho allows some home-produced, lower-risk foods to be sold directly to consumers with limited regulation. See our cottage food business guide.
Childcare. Childcare licensing in Idaho depends on how many children you care for; larger programs are licensed by the state, and some cities license smaller ones. See our home daycare guide.
Agriculture. Farm, ranch and food-processing businesses often need permits from the state agriculture department.
Idaho compared with nearby states
| State | Filing fee | Recurring state report |
|---|---|---|
| Idaho | $100 online | Free yearly report |
| Utah | $59 | $18 yearly |
| Washington | $200 online | $70 yearly |
| Oregon | $100 | $100 yearly |
| Nevada | $425 at formation | $350 yearly |
| Wyoming | $100 | $60 minimum |
See our Washington, Oregon and Utah guides if you work across state lines, especially around Spokane–Coeur d’Alene.
Mistakes to avoid
- Forgetting the free annual report, which leads to dissolution.
- Doing construction work without contractor registration.
- Selling taxable goods without a seller’s permit.
- Using an unregistered assumed business name.
- Letting your registered agent lapse, so legal papers and state notices go astray.
- Assuming a free filing is optional. It’s mandatory, and missing it has real consequences.
Frequently asked questions
Is the Idaho annual report really free? Yes, for LLCs filing online. It takes only a few minutes in SOSBiz.
Does Idaho have a franchise tax for LLCs? No. The recurring state filing for most LLCs is the free annual report.
When is my first annual report due? By the end of your anniversary month in the year after formation, and in the same month every year after.
Can I be my own registered agent? Yes, with a physical Idaho address where you’re available during business hours.
Is my LLC’s information public? Your LLC’s name, registered agent, addresses and listed members or managers appear in SOSBiz.
Next steps
Read the Start a Business A–Z guide, see how to price your product or service, and plan with the break-even calculator.
This guide is general information, not legal or tax advice. Fees and rules change; check the Idaho Secretary of State and State Tax Commission before you file.
Sources
- LLC University, LLC annual fees by state (2026)
- Jupid, LLC cost by state 2026
- Idaho Secretary of State, Business Services
- Idaho State Tax Commission
Last reviewed October 19, 2026. Startup costs are estimates; check local prices, licensing and tax rules before you commit money.
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