Construction & ContractorsRate Formulation
Contractor Hourly Rate Calculator
Calculate a sustainable hourly billing rate based on owner compensation, annual overhead expenses, billable efficiency, and profit.
Calculation Results
Sustainable Hourly Billing Rate Formula
Hourly Rate = ((Target Salary + Annual Overhead) / Annual Billable Hours) / (1 - Profit Margin %)- Billable Efficiency: Most trade contractors are billable 25 to 30 hours per week (the remaining 10–15 hours are spent estimating, driving, and bookkeeping).
- Breakeven Rate: Minimum hourly rate needed to cover direct salary and overhead with zero profit.
- Daily Rate: 8 hours × Hourly Billing Rate.
Step-by-Step Worked Example
Scenario: An electrical contractor targeting $95,000 salary with $30,000 overhead and 28 billable hrs/week
Calculation Steps:
- Annual Billable Hours = 28 hrs × 48 weeks = 1,344 billable hours
- Total Operating Cost = $95,000 + $30,000 = $125,000
- Breakeven Hourly Cost = $125,000 / 1,344 = $93.01 / hour
- Recommended Billing Rate = $93.01 / (1 - 0.15) = $109.42 / hour
- Daily Rate (8 hrs) = $109.42 × 8 = $875.36 / day
- Annual Business Revenue = 1,344 hrs × $109.42 = $147,060
Result: Charge at least $109.42/hr ($875/day) to pay yourself $95,000, cover $30,000 in overhead, and generate $22,060 in company profit.
How to Use This Calculator
- 1Enter desired annual personal take-home pay.
- 2Tally annual business overhead (insurance, vehicle, gas, tools, software).
- 3Be realistic with billable hours per week (typically 25–30 hours).
Assumptions & Limitations
- Estimates are based on standard national averages and current prevailing construction materials and contractor rates.
- Actual trade bids may fluctuate according to local building code requirements, permit fees, and site topography.
- Always obtain multiple written bids from licensed, bonded, and insured contractors before commencing work.
Frequently Asked Questions
Why can’t I assume 40 billable hours per week?
Estimating jobs, buying materials, driving to job sites, invoicing, and equipment maintenance cannot be directly billed to clients. Planning for 40 billable hours leads to severe undercharging.
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