Insurance is one of those things every contractor knows they need but few actually understand. You pay thousands a year for policies you’ve barely read, and you’re not sure if you’re over-insured, under-insured, or just poorly insured.

Let’s break down what you actually need, what each policy covers, and where you might be wasting money.

General Liability Insurance

What it covers: Third-party bodily injury and property damage. If you accidentally break a client’s window, damage their flooring, or a visitor trips over your equipment on a job site — general liability pays for it.

Who needs it: Every contractor. Period. This is the baseline. Most clients won’t hire you without it, and many states require it for licensure.

Typical cost: $500-$2,500/year for $1M/$2M coverage, depending on your trade and revenue. High-risk trades (roofing, electrical, demolition) pay more. Low-risk trades (painting, cleaning, landscaping) pay less.

Common mistake: Choosing the cheapest policy without reading the exclusions. A general liability policy that excludes your primary trade activity is worthless. Make sure your specific work type is explicitly covered.

Workers’ Compensation

What it covers: Medical expenses and lost wages for employees injured on the job. It also protects you from lawsuits by injured workers.

Who needs it: Any contractor with employees. Requirements vary by state — some require it with just one employee, others kick in at 3-5. A few states require it even for sole proprietors in high-risk trades.

Typical cost: $0.75-$3.50 per $100 of payroll, depending on your trade’s classification code and your claims history. A painting contractor with $200,000 in annual payroll might pay $2,000-$3,000. A roofing contractor with the same payroll could pay $15,000+.

Common mistake: Misclassifying employees as subcontractors to avoid workers’ comp. If your “sub” works exclusively for you, uses your tools, and follows your schedule, the state considers them an employee. Getting caught means back premiums, penalties, and potential criminal charges.

The Experience Modification Rate (EMR)

Your EMR compares your claims history to the industry average. A rating of 1.0 is average. Below 1.0 means fewer claims than average (lower premiums). Above 1.0 means more claims (higher premiums).

One serious claim can raise your EMR for three years. This is why job-site safety isn’t just an OSHA thing — it directly affects your insurance costs.

Commercial Auto Insurance

What it covers: Vehicles used for business purposes — your work truck, van, trailer, or any vehicle that hauls tools, materials, or crew members to job sites.

Who needs it: Any contractor who uses a vehicle for work. Your personal auto policy almost certainly excludes business use. If you get in an accident driving to a job site and your insurer finds out you were working, they can deny the claim.

Typical cost: $1,200-$3,500/year per vehicle, depending on vehicle type, driver history, and coverage limits.

Common mistake: Assuming your personal policy covers your work truck. It doesn’t. Even if you use the same vehicle for personal and business, you need a commercial policy — or at minimum, a business-use endorsement on your personal policy.

Inland Marine Insurance

What it covers: Your tools, equipment, and materials — whether they’re on a job site, in your truck, or in transit. Despite the confusing name, this has nothing to do with boats.

Who needs it: Any contractor with significant tool and equipment investment. If someone breaks into your truck and steals $10,000 worth of tools, your commercial auto policy won’t cover the tools — only the vehicle damage. Inland marine fills that gap.

Typical cost: $300-$1,500/year, depending on the total value of equipment covered.

Common mistake: Not maintaining an updated equipment inventory. If you file a claim, you’ll need to prove what you owned and what it was worth. Keep a list with photos, serial numbers, and purchase receipts. Taking photos of your tool inventory through your job management software creates a dated, organized record that holds up with insurers.

Surety Bonds

What it covers: Bonds aren’t insurance — they’re a guarantee to your client that you’ll complete the work as agreed. If you don’t, the bonding company pays the client and then comes after you for the money.

Who needs them: Contractors doing government work, large commercial projects, or working in states that require bonds for licensure. Three main types:

  • License bonds: Required by your state or municipality to hold a contractor’s license
  • Bid bonds: Guarantees you’ll honor your bid if selected for a project
  • Performance bonds: Guarantees you’ll complete the work per contract terms

Typical cost: 1-3% of the bond amount for contractors with good credit. A $50,000 performance bond might cost $500-$1,500.

Professional Liability (Errors & Omissions)

What it covers: Claims arising from professional mistakes — a design error, a code violation you should have caught, or faulty advice that leads to damages.

Who needs it: Contractors who provide design-build services, consulting, or project management. Pure trade contractors (plumbers, electricians, HVAC) usually don’t need this, but it’s worth considering if you’re signing off on designs or engineering decisions.

Typical cost: $500-$3,000/year depending on your revenue and the scope of professional services you provide.

Umbrella Insurance

What it covers: Extra liability coverage that kicks in when your other policies hit their limits. If you have a $1M general liability policy and face a $1.5M claim, your umbrella policy covers the extra $500K.

Who needs it: Contractors with significant assets to protect, those doing high-value commercial work, or anyone whose contracts require higher liability limits than their base policy provides.

Typical cost: $300-$1,000/year for $1M in additional coverage.

How to Save on Insurance

  • Bundle policies: Most insurers offer discounts when you combine GL, commercial auto, and inland marine into a Business Owner’s Policy (BOP).
  • Improve your safety record: A clean claims history lowers your premiums over time. Document your safety practices.
  • Shop every 2-3 years: Loyalty doesn’t pay in insurance. Get competitive quotes regularly.
  • Raise your deductibles: If you can handle a $2,500 deductible instead of $500, your premiums drop significantly.
  • Classify correctly: Make sure your business is classified under the right code. An incorrect classification can mean overpaying by thousands.

Keep Your Certificates Organized

Property managers, general contractors, and commercial clients will ask for your Certificate of Insurance (COI) constantly. Having it ready to send in minutes — not days — makes you look professional and keeps projects moving.

Store your COIs digitally and attach them to your business profile so you can share them instantly when a client or GC asks. CrewRivet lets you store documents and share them through your customer portal, so your insurance info is always one click away.

The Bottom Line

Insurance is a cost of doing business, but it doesn’t have to be a mystery. Get the policies your trade requires, skip the ones you don’t need, and review your coverage annually as your business grows. The worst time to find out you’re underinsured is when you need to file a claim.

Run a tighter operation. Start your free 60-day trial of CrewRivet — document storage, job tracking, and business management built for contractors.