Construction Overhead Rate Calculator
Calculate your overhead rate as a percentage of direct labor or total revenue to ensure all indirect costs are covered in your project bids.
Annual Overhead Costs
Annual Direct Costs
Formulas Used
Total Overhead = Rent & Utilities + Insurance & Bonds + Admin Salaries + Vehicle & Equipment + Marketing + Software & Tools + Legal & Professional + Other
Overhead Rate (Labor-Based) = (Total Overhead ÷ Total Direct Labor Cost) × 100
Overhead Rate (Revenue-Based) = (Total Overhead ÷ Total Annual Revenue) × 100
Overhead per Labor Dollar = Total Overhead ÷ Total Direct Labor Cost
Gross Profit = Revenue − Direct Labor − Total Overhead
Gross Margin = (Gross Profit ÷ Revenue) × 100
Assumptions & References
- Overhead costs are indirect costs not tied to a specific job — they exist regardless of project volume.
- Direct labor includes field wages, payroll taxes, and fringe benefits paid to production workers.
- The labor-based overhead rate is the most common method used in construction estimating (CFMA, Construction Financial Management Association).
- A typical residential contractor overhead rate ranges from 15%–35% of direct labor; commercial contractors often run 25%–55%.
- Materials are excluded from this calculator; they are typically tracked as a direct job cost and marked up separately.
- This calculator does not include profit margin — add your desired net profit percentage on top of the overhead rate when pricing jobs.
- Reference: CFMA Construction Industry Annual Financial Survey; Markup & Profit by Michael Stone.