Contractor Overhead Costs Explained (What You're Forgetting)

The Hidden Costs Killing Your Profits

You charge $60/hour for your labor. But after paying for your truck, insurance, tools, phone, and all the other costs of running your business, how much are you actually keeping?

If you haven't done the math, the answer might shock you. Most contractors who charge $50-60/hour are actually earning $15-25/hour after overhead — less than they'd make working for someone else.

The Complete Contractor Overhead List

Here's everything you need to include when calculating your true hourly rate:

Insurance ($3,000 - $15,000/year)

• General liability insurance
• Workers compensation (even for yourself in many states)
• Commercial auto insurance
• Inland marine (tools and equipment)
• Health insurance (if self-employed)
• Umbrella policy

Vehicle Costs ($8,000 - $20,000/year)

• Truck/van payment or depreciation
• Fuel
• Maintenance and repairs
• Tires
• Registration and inspection
• Commercial vehicle insurance (separate from personal)

Tools and Equipment ($2,000 - $10,000/year)

• New tool purchases
• Tool repair and maintenance
• Consumables (blades, bits, sandpaper)
• Safety equipment (PPE)
• Equipment rental for specialty tools

Office and Admin ($2,000 - $8,000/year)

• Phone bill (business line)
• Software subscriptions (estimating, accounting, CRM)
• Office supplies and printing
• Storage unit or shop rent
• Internet
• Postage and shipping

Professional Costs ($1,000 - $5,000/year)

• Licensing and permit fees
• Continuing education and training
• Trade association memberships
• Accountant/bookkeeper fees
• Legal fees
• Bond costs

Marketing ($1,000 - $5,000/year)

• Website hosting
• Google Business Profile
• Business cards and vehicle wrap
• Lead generation
• Social media advertising

Miscellaneous ($1,000 - $3,000/year)

• Uniform/work clothing
• Meals on job sites
• Parking and tolls
• Bank fees and merchant processing
• Bad debt (clients who don't pay)

How to Calculate Your True Hourly Rate

Step 1: Add up all annual overhead costs from the list above.

Step 2: Add your desired annual salary (what you want to take home).

Step 3: Determine your billable hours per year.

Most solo contractors bill 1,200-1,600 hours per year. Here's why it's not 2,080 (40 hrs × 52 weeks):

• Weekends off: -520 hours
• Holidays: -80 hours
• Vacation/sick: -80 hours
• Estimating and sales: -200 hours
• Admin and bookkeeping: -100 hours
• Drive time (non-billable): -200 hours
• Weather days: -60 hours

Step 4: Divide total costs by billable hours.

Example:

• Desired salary: $70,000
• Total overhead: $35,000
• Total annual cost: $105,000
• Billable hours: 1,400
• Cost per hour: $75/hour

Step 5: Add profit margin (15-25%).

$75 ÷ (1 - 0.20) = $93.75/hour

That's what you need to charge to earn $70,000, cover all overhead, and make 20% profit.

Why This Matters for Every Estimate

Every estimate you send should be built on your true hourly rate — not a number you pulled from the air. When you know your numbers, you can:

• Price confidently without second-guessing
• Say "no" to jobs that aren't profitable
• Explain your pricing to clients with real numbers
• Actually make money instead of just staying busy