Starting a service business in Idaho

Form your business in Idaho

File a Certificate of Organization with the Idaho Secretary of State. The base filing fee is $100 on the Idaho Secretary of State's forms page in October 2026. File online through SOSBiz to pay just the base fee; paper forms that need manual data entry carry a $20 manual processing fee, for $120 total. Idaho Code 30-21-214 sets that $20 surcharge for forms not generated by the state's electronic filing system.

Ongoing state filings

Every Idaho LLC files an annual report, and it costs nothing: Idaho Code 30-21-214 lists the annual report as no fee. Under Idaho Code 30-21-213 the report is due each year before the end of the month in which your LLC was formed, so an LLC formed in May files by May 31. It lists your registered agent, principal office address and at least one governor. Missing it can lead to administrative dissolution.

Using a business name (DBA)

To do business under a name other than your legal name, register an assumed business name certificate at the Secretary of State. The base fee is $25 (October 2026 forms page), or $45 on paper with the manual processing fee. An amendment is $10 base.

Not sure whether you need an LLC at all? Read LLC vs sole proprietor for contractors, then get your free EIN from the IRS.

Licensing for service trades

Idaho's Contractors Board, within DOPL, registers contractors. Per the board, anyone doing a construction job worth more than $2,000 in materials and labor must register unless exempt. Licensed electricians, plumbers, HVAC installers and similar licensees do not register as contractors for work within the scope of their license, and employees of a registered contractor are covered by their employer. The board can revoke a registration for failing to carry the workers' comp or liability insurance the law requires. Electrical, plumbing and HVAC work each has its own DOPL board and license. Cleaning, mowing and washing work that is not construction may also need a city business license, so check with each city where you work.

• Idaho Contractors Board (DOPL): Contractor registration for construction jobs over $2,000
• Idaho Electrical Board (DOPL): Electrical contractor and electrician licenses
• Idaho State Plumbing Board (DOPL): Plumbing licenses
• Idaho HVAC Board (DOPL): Heating, ventilation and air conditioning licenses

Workers' compensation

The Idaho Industrial Commission says employers with one or more full-time, part-time, seasonal or occasional employees must keep a workers' comp policy unless specifically exempt, and the policy must be in place before the first employee is hired. Idaho offers four routes: a private insurer (the commission counts more than 300 authorized to write Idaho coverage), the Idaho State Insurance Fund (which the commission describes as quasi-governmental and not a state agency), the assigned risk pool run by NCCI for employers who cannot get coverage elsewhere, or self-insurance for large employers. An uninsured employer can be personally liable for an injured worker's medical and wage-loss benefits.

More on coverage: business insurance for contractors.

Sales tax on services

The Idaho State Tax Commission treats contractors as the consumers of the goods they use. If you build, improve, repair or alter real property, you pay sales tax when you buy materials, fixtures, tools and supplies, and you do not charge sales tax to your customer; build the tax you paid into your bid. If you sell goods at retail, such as cabinets you build and deliver for someone else to install, you are a retailer and need a seller's permit to collect tax. The commission's own examples use a 6% rate. Register through the commission's Idaho Business Registration system if you will sell goods or have employees.

Recording business calls in Idaho

Idaho is one-party consent. Idaho Code 18-6702(2)(d) makes it lawful to intercept a call when one of the parties has given prior consent, and 18-6702(2)(e) bars interception for the purpose of committing a criminal act. If customers call from all-party states, see our guide to recording business calls before you turn recording on.

See our guide to recording business calls before you turn on call recording or an AI receptionist.

How the seasons shape the work

Idaho's work calendar follows elevation. The Treasure Valley around Boise has hot, dry summers that drive irrigation, lawn and air conditioning work, while the panhandle and mountain towns get long snowy winters that support plowing and roof snow work. Fall brings sprinkler blowouts before the first hard freeze, and summer wildfire smoke can stall outdoor crews for days, so leave slack in July and August schedules.

Residential disclosure over $2,000

The Contractors Board's guidance says Idaho Code 45-525 requires a general contractor to give a disclosure statement before signing a contract over $2,000 with a homeowner to build, alter or repair residential property, and to keep a signed receipt. The statement tells the owner they can request lien waivers from subcontractors, proof of general liability (including completed operations) and workers' comp coverage, an extended title insurance policy, and a surety bond at their own expense. A second disclosure is due near completion.

Then set up the back end that gets you hired

The paperwork makes you legal. Customers still have to find you, reach you and pay you. Before your first job, set up a business phone number, email on your own domain, a Google Business Profile, a simple website, and a way to send quotes and take card payments. The launch checklist lays out the order.

Idaho questions