How to Start a Security Guard or Private Investigator Business in Idaho: No State License, Some City Rules

Informational only. This article is general information, not legal or tax advice. Idaho law and city rules change, and fees on this page may be out of date. Confirm each figure with the named agency, and talk to an Idaho attorney and a CPA before you form the business or sign client contracts.

If you searched for an idaho security guard license, an idaho private investigator license, or an idaho security license, the first thing to know is that the state does not issue any of them. Idaho has no state license for security guards, security companies, or private investigators. The Division of Occupational and Professional Licenses (DOPL) board list includes none of these, and Idaho Code Title 54 has no chapter covering them as of October 2026. No state exam and no state licensing fee applies to this work.

The local layer is where the real work is. Cities set their own rules. Some require a business license, an employee license, or both. Some license only specific activities, and others do not license these businesses at all. Counties issue no general business license. This guide covers the formation steps that apply everywhere in Idaho, then shows you how to check the city rules for each place you work.

What you need before you start

• A proposed business name, checked in the Idaho Secretary of State business search at https://sosbiz.idaho.gov/search/business
• An entity choice: an LLC or a corporation, or a sole proprietorship if you accept personal liability for the work
• A registered agent with a physical Idaho street address
• A list of the cities where you will post guards or take investigation work, plus the clerk contact for each one
• A federal Employer Identification Number (EIN) from the IRS
• Budget for the LLC Certificate of Organization: $100 filed online or $120 on paper. A corporation files Articles of Incorporation for $100.
• Budget for an assumed business name if you will operate under any name other than your exact legal name: $25 online or $45 on paper
• Insurance quotes for liability coverage, plus workers' compensation once you hire
• A written list of your services, such as guard patrol, event security, investigations, background checks, or surveillance, because city licenses are often activity specific
• A bank account in the business name, opened after the entity is approved

Step-by-step: forming the business

1. Confirm that no state license applies to your work

Before you spend money, confirm the state position. Review the DOPL board list and the chapters of Idaho Code Title 54, and write down what you found and the date you checked. Then ask your insurer and your largest prospective clients whether they require any certificate or registration from you. The absence of a state license does not remove obligations. Contract requirements, insurance requirements, and city rules still apply.

2. Check the city rules for every place you will work

This is the step most new owners skip, and it is the one that stops work. The rule that applies is set by the city where the post, office, or client sits. Some cities require a general license or permit for any business. Others license only specific activities such as private investigation, security services, or private patrol. Call each city clerk and ask which license covers your exact activity, what the current fee is, and how employee licenses are handled. Do not assume a license in one city covers another.

3. Choose a structure and file with the Secretary of State

An LLC is the most common choice for a guard or investigation company because it separates your personal assets from business claims. File the Certificate of Organization (Limited Liability Company) through SOSBiz at https://sosbiz.idaho.gov/forms/business/. It costs $100 online or $120 on paper. Standard processing takes about 7 to 10 days from the filing date. You can pay for speed: a $40 surcharge gets evidence of filing within 8 working hours, and a $100 surcharge gets same day service on filings submitted before 1:00 p.m. Mountain time.

Your LLC name must include “limited liability company,” “limited company,” “L.L.C.,” “LLC,” “L.C.,” or “LC.” “Limited” may be abbreviated “Ltd.,” and “company” may be abbreviated “Co.” The name must be distinguishable from every existing, reserved, and registered name on Secretary of State records. Entity words such as “LLC” or “Inc.” are not counted when testing distinguishability. The name may not falsely state or imply government affiliation, so avoid words like “police” or “sheriff.” If you need time to file, you can reserve a name for 120 days for $20 at https://sos.idaho.gov/business-forms/.

4. File an assumed business name if you will use one

If your LLC is “Ridgeline Protection Group LLC” but you plan to market as “Ridgeline Protection,” you need an assumed business name, which Idaho calls a Certificate of Assumed Business Name. It is filed with the Idaho Secretary of State, not the county. Online filing costs $25. A paper filing costs $45, which includes a $20 manual data entry surcharge. The assumed business name stays active until you cancel it and is not subject to renewal. The form is at https://sos.idaho.gov/business-forms/. Remember that an assumed business name cannot serve as your registered agent.

5. Appoint a registered agent

Every entity must maintain a registered agent in Idaho at all times. The agent needs a physical Idaho street address, because P.O. boxes are not accepted, and must be available during normal business hours. The agent can be an Idaho resident, a business authorized to do business in Idaho, or a commercial registered agent. An owner may act as their own registered agent if they have an Idaho address and can be reached during business hours. Many owners who work job sites all day choose a commercial agent so legal papers are not missed. Commercial agent fees are not set by the state, so compare quotes before you pick one.

6. Get an EIN and set up your state tax accounts

Get a federal EIN from the IRS before you open a business bank account or hire anyone. It is your federal tax and payroll identifier. For state tax, Idaho has a flat 5.3% income tax. A default LLC is a pass-through entity, so its members report Idaho income on their personal returns at that rate. An LLC that files a partnership or S corporation return owes the $10 permanent building fund tax. An LLC taxed as a C corporation pays the 5.3% business income tax plus the $10 permanent building fund tax. Idaho has no franchise tax and no LLC-specific annual state tax.

Idaho’s state sales tax rate is 6%, and there is no local sales tax outside voter-approved resort cities. Whether any of your services are subject to sales tax is a question for your CPA and the Idaho State Tax Commission at https://tax.idaho.gov/. If you do need a sales tax permit, the registration page is https://tax.idaho.gov/ibr.

7. Get the city licenses for the business and each employee

Once the entity exists, apply for every city license your activities require. In some cities the business and each employee need separate licenses, so budget for both. Pocatello is one example. Its fee schedule as of 2026 lists a private investigator and security guard business license at $100 per year, and an employee license at $80 with a $40 renewal. Confirm those figures with the Pocatello city clerk before you budget, because fee schedules change. Where a city requires an employee license, do not put that person on a post until the license is issued.

8. Confirm firearm rules before you arm anyone

Idaho’s carry rules are in Idaho Code 18-3302. Read that section yourself, then confirm the current position with the Idaho State Police and with the city where the armed post sits before you arm staff. Employers set armed-guard training, so write your own training standard, document each guard’s training and qualifications, and keep records current. Clients and insurers often ask for more than the minimum. Do not assume a permit or certificate held by one guard covers another, and do not assume a rule in one city applies in the next.

9. Put insurance in place before the first hire

Get liability insurance quotes before you sign your first client contract. Many clients ask for a certificate of insurance before work begins. Set up workers' compensation once you hire, and ask your agent what it will cost for your payroll. Ask whether the policy covers the specific services you plan to sell, such as armed work or investigations, because exclusions are common in these lines. Have an attorney review your client contracts, especially indemnity and hold-harmless language.

10. Calendar the annual report

Every LLC and corporation must file an annual report every year, beginning one year after formation. It is due before the end of the month in which your Certificate of Organization or Articles of Incorporation became effective. The fee is $0, but the filing is still required, so set a reminder for the month before the due month. File through SOSBiz at https://sosbiz.idaho.gov/forms/business/.

City rules at a glance

The table below reflects what each city’s published materials showed when we checked in October 2026. Where we could not confirm a fee or rule, the table says so. Cities that are not listed may have their own rules, so check each one you work in.

City	What the city licenses	Figures on record	What to do
Pocatello	Private investigator and security guard business license; employee license	Business license $100 per year; employee license $80, with a $40 renewal (fee schedule as of 2026)	Confirm with the city clerk before you budget
Boise	Security Services license category	Fee not confirmed here; fingerprinting is done at City Hall	Check Boise’s fee schedule and ask how to schedule fingerprinting
Nampa	Private investigator, detective, or security licenses	Not confirmed	Check with the Nampa city clerk
Twin Falls	Private investigator, detective, or security licenses	Not confirmed	Check with the Twin Falls city clerk
Coeur d’Alene	Private investigator, detective, or security licenses	Not confirmed	Check with the Coeur d’Alene city clerk
Caldwell	Private patrol license	Not confirmed	Check with the Caldwell city clerk

Common mistakes to avoid

• Assuming a state license exists. Confirm the DOPL board list and Title 54 first, then spend your time on city rules.
• Looking to the county for a business license. Idaho counties issue no general business license, and assumed business names are filed with the Secretary of State.
• Choosing a name that is too close to an existing record. Entity words do not help you pass the distinguishability test.
• Naming a P.O. box as your registered agent address. The agent needs a physical Idaho street address.
• Skipping the annual report because the fee is $0. It is still required every year.
• Assuming one city’s license covers the next city. Each city sets its own rules.
• Putting guards on posts before employee licenses and insurance are in place.
• Arming staff before you have checked the state and city position and documented training.

Tips that save time

• Check the Processed Through Date page on SOSBiz before you promise a start date to a client. Current processing estimates are posted there.
• Ask each city clerk three questions: which license covers my exact activity, what is the current fee, and how are employee licenses issued.
• Keep one folder per city with the fee schedule, the application, and the date you checked it.
• Run your plan past the Idaho Small Business Development Center at https://idahosbdc.org/, or the SBA Boise district office at https://www.sba.gov/district/boise.
• Use the Business Wizard at business.idaho.gov to build a checklist of agencies and permits for your activity. The site states plainly that Idaho does not have a state business license, and that registering your business is a registration, not a license.

Expected results

Owners who work through these steps often end up with a registered entity, a written list of city licenses for their service area, and insurance in place before the first paid job. Standard Secretary of State processing is estimated at 7 to 10 days, so you may be able to plan a first client a few weeks after filing. That timing is an estimate, not a guarantee, and it depends on your city list, your services, and how quickly each clerk responds.

The formation filings do not give you authority to work in every city. It is possible to finish every state filing and still be missing the city license that keeps a guard off a post. Build the city check into your timeline from the start.

When to get professional help

Talk to an Idaho business attorney before you sign contracts with indemnity language, before you arm staff, and before you take work outside Idaho. Ask a CPA how your LLC will be taxed and whether any of your services are subject to the 6% state sales tax. Ask an insurance agent to price coverage for the exact services you will sell, because the policy language matters as much as the premium.

Disclaimer

This article is informational only and is not legal or tax advice. Fees, processing times, and city rules can change. Verify every figure with the Idaho Secretary of State, the Idaho State Tax Commission, the relevant city clerk, or another named agency before you rely on it.