How to Start a Security Company in Missouri

Starting a security company in Missouri requires navigating city-level licensing, business formation, and insurance. Unlike many professions, Missouri has no statewide security license. Instead, Kansas City and St. Louis each run separate private security licensing programs through their police departments. This means your path depends on where you operate. This guide walks you through the process from licensing to launch.

Step 1: Understand Missouri's Security Licensing Structure

Missouri's security industry is regulated by city police departments, not the state. This is a critical starting point. The two largest cities handle most private security licensing:

• Kansas City: The KCPD Private Officers Licensing Unit enforces 17 CSR 10-2 and licenses both security companies and individual security officers.
• St. Louis: The St. Louis Metropolitan Police Department Private Security Section licenses companies and officers. The St. Louis police department is now under a state-appointed Board of Police Commissioners as of HB 495 (2025).
• St. Louis County: St. Louis County Police also operates a private security licensing program. Contact them directly to confirm current requirements and fees.
• Other cities: If you plan to operate outside Kansas City or St. Louis proper, check with that city's police department for their specific rules and requirements. Some smaller cities may have minimal or no private security regulation.

Before you incorporate or file paperwork, contact the police department in the city where you'll operate to learn their exact licensing requirements, application process, and fees. Licensing rules differ significantly between jurisdictions, and starting with the wrong assumption wastes time and money.

Step 2: Gather Required Documents and Information

Before you apply for a security license or form your business, assemble the following materials:

• Personal identification and social security number
• Background check authorization (most jurisdictions require this)
• Proof of business address (office or commercial space)
• Business plan or summary of services offered (armed, unarmed, event security, etc.)
• Proof of liability insurance (usually required for licensing)
• Proof of compliance with any training or certification requirements (varies by city)
• Articles of Organization or Incorporation if you've already formed an entity
• List of any armed officers you plan to employ (if applicable)

The specific requirements depend on your licensing city. Armed security officers typically face more stringent background checks and may need additional permits. Call ahead to confirm what your jurisdiction requires.

Step 3: Apply for Your Security Company License

The licensing process and timeline vary by city. Here's what you need to do:

For Kansas City operations: Contact the KCPD Private Officers Licensing Unit. They enforce regulations under 17 CSR 10-2. Provide your business information, background authorization, and a certificate of liability insurance for $1 million (or an equivalent bond) naming the Board of Police Commissioners as additional insured. The rule sets a $400 new company license fee and a $300 renewal, paid annually by January 31, plus separate fees for each officer license. Confirm the processing timeline with the unit directly.

For St. Louis operations: Apply through the St. Louis Metropolitan Police Department Private Security Section. They will request similar documentation: business registration, personal background clearance, liability insurance proof, and officer credentials if hiring armed personnel. Processing times and fees should be confirmed by contacting the section directly.

For St. Louis County operations: The St. Louis County Police Department runs its own private security licensing program. Confirm program details, fees, and timelines by contacting their office directly. County requirements may differ from St. Louis city.

What to expect: Most jurisdictions conduct background checks, verify your business address, and review your insurance coverage before issuing a license. Processing time depends on volume and the completeness of your application, so ask the licensing unit what to expect. Do not hire officers or advertise security services until your license is approved.

Step 4: Form Your Business Entity

Missouri has no statewide business license, but you must form a legal business entity. The two most common choices are a limited liability company (LLC) and a corporation. Here's how they compare for a security company:

Limited Liability Company (LLC): An LLC costs $50 to file with the Missouri Secretary of State and takes just minutes to process online. LLCs provide personal liability protection and pass income through to you as the owner. Missouri LLCs owe no annual report and no recurring maintenance fee. This is the simpler, cheaper option for a solo operator or small firm.

Corporation: A corporation costs $58 to file and requires an annual registration report (fee: $20, due in the month of incorporation each year). Corporations provide the same liability protection as LLCs but involve slightly more paperwork. Most startups choose an LLC unless they need corporate structure for investor or tax reasons.

Filing your entity: Use the Missouri Secretary of State's online business filing portal at https://bsd.sos.mo.gov/. Choose a business name that includes LLC or LLC. (if forming an LLC) and search the database to make sure it's available. File your Articles of Organization online and pay the $50 fee. The filing is typically processed immediately. You will receive a confirmation number and can begin using your business name right away.

Step 5: Get Your Federal Tax ID (EIN)

Once your business is formed, you need a Federal Employer Identification Number (EIN) from the Internal Revenue Service. This is free and takes 5 minutes online at irs.gov/ein. You'll need your Social Security number, business formation date, and the business address. The IRS will issue your EIN immediately online or by mail. You'll use this EIN for hiring employees, opening a business bank account, and filing taxes.

Step 6: Register for Missouri Taxes

Missouri requires all businesses to register for the taxes that apply to them:

• Sales tax: If you sell any tangible products (uniforms, equipment) or certain taxable services, register for a sales tax license at https://dor.mo.gov/register-business/. Missouri's state sales tax is 4.225%. Local taxes may add to this.
• Income tax: Your LLC or corporation's net income is subject to Missouri income tax. The default is pass-through taxation for LLCs (you pay personal income tax at graduated rates up to 4.70% for 2026) or corporate income tax at a flat 4% for corporations (2020 onward). Confirm your filing status with the Missouri Department of Revenue.
• Employer withholding: If you hire employees, register with the Missouri Department of Revenue for employer withholding and payroll reporting.
• Unemployment insurance: Register with the Missouri Division of Employment Security to pay unemployment insurance taxes on wages.

Complete these registrations at the Missouri Department of Revenue website (https://dor.mo.gov/taxation/business/) or by phone.

Step 7: Obtain Liability Insurance

Liability insurance is non-negotiable and usually required by your licensing city before they issue your security company license. Security companies face significant risk, so most insurers require:

• General liability coverage (at least $1 million per occurrence)
• Professional liability (errors and omissions coverage)
• If hiring armed officers: employment practices liability and additional coverage
• Workers' compensation insurance (mandatory in Missouri once you have five or more employees)

Get quotes from at least three insurers that specialize in security industry coverage. Expect to pay $1,500 to $5,000 annually depending on your coverage limits and the size of your team. Have your policy in place before applying for your security license.

Step 8: Hire and Train Security Officers

Once licensed, you can hire security personnel. Here's what you need to do:

• Background checks: Conduct thorough background checks on all candidates before hiring. Most jurisdictions require this anyway.
• Licensing: Individual security officers in Kansas City and St. Louis must be licensed separately. They must apply through the same police department that licenses your company. Budget time and fees for each officer's individual license.
• Training: Missouri does not mandate statewide security training, but cities may require it. Kansas City and St. Louis may have specific training or certification requirements for guards. Confirm with your licensing authority.
• Armed officers: If hiring armed guards, the requirements are stricter. Officers must complete firearms training and qualification. In Kansas City, armed licensees complete four hours of handgun training at the police pistol range each year (with separate rifle training to carry a rifle). Armed officer licensing costs more and takes longer to process.
• Payroll and taxes: Set up payroll using your EIN. Withhold federal and Missouri income taxes. Pay workers' compensation and unemployment insurance on every paycheck.

Step 9: Set Up Operations

Now that you're licensed and have personnel, establish the practical side of your business:

• Business bank account: Open a checking account using your EIN and business formation documents. This keeps personal and business finances separate.
• Accounting software: Use QuickBooks, Wave, or similar software to track income, expenses, and payroll.
• Contracts and policies: Draft standard service agreements for clients, employment contracts for officers, and internal policies for uniforms, conduct, and emergency procedures. Have an attorney review these.
• Dispatch and scheduling: Set up a system to schedule guards, track assignments, and manage client communications. Many security firms use specialized dispatch software.
• Marketing: Build a website, get on Google Business Profile, and start marketing to local businesses, event venues, and property management companies. Most security work comes from referrals, so ask satisfied clients for testimonials.

Tips to Avoid Common Mistakes

• Don't start before getting licensed. Operating without proper licensing exposes you to fines, lawsuits, and shutdown. Many cities treat unlicensed security as criminal.
• Don't assume statewide rules apply. Missouri's fragmented licensing system means what works in Kansas City doesn't work in St. Louis or a rural county. Always contact the specific city where you'll operate.
• Don't skimp on insurance. One lawsuit can bankrupt an under-insured security company. Get adequate coverage from day one.
• Don't forget payroll taxes. Misclassifying officers as contractors to avoid withholding creates huge tax penalties. Set up proper payroll from the start.
• Don't hire without background checks. A guard with a criminal history or violent past destroys your reputation and exposes you to negligent hiring lawsuits.
• Don't ignore the licensing city's ongoing compliance. License renewals, annual reports, or continuing education requirements vary by city. Miss a deadline and lose your license.

Timeline and Expected Costs

Here's a rough estimate of what you'll need to invest and how long it takes:

Item	Cost	Timeline
Security company license (Kansas City or St. Louis)	Verify with licensing city	Varies
LLC formation filing	$50	Immediate
Federal EIN (free)	$0	5 minutes
Liability insurance (annual)	$1,500-$5,000	1-2 weeks
Business bank account	$0 (may have monthly fees)	1 day
Website and basic marketing	$300-$2,000	2-4 weeks

Total minimum startup cost: $2,000 to $10,000 depending on your location, whether you hire immediately, and the scope of your insurance. Most of the time goes to getting your security license, not forming the business.

When to Consult Professionals

This guide is informational and covers the general steps to start a security company in Missouri. However, security law is complex and city-specific. Consult an attorney who knows Missouri security regulations before hiring your first officer or taking your first contract. Similarly, work with a CPA or tax professional to ensure you're filing the right tax returns and taking advantage of any deductions. The cost of a consultation ($200 to $500) is far cheaper than a licensing violation or tax audit.

Disclaimer

This article provides general informational guidance about starting a security company in Missouri and is not legal, tax, or business advice. Security licensing requirements vary by city and change over time. Verify all fees, timelines, and regulations directly with the appropriate city police department before you file any paperwork or hire any personnel. Consult a qualified attorney and CPA to ensure compliance with federal, state, and local laws specific to your situation.