Guide

How to Calculate Construction Profit

Construction profit is revenue minus every cost of delivering the project. Subtract material, labor, subcontractor, and other costs from revenue to get profit, then divide by revenue to get your profit margin.

The profit formula, step by step

Total your revenue. Start with the full contract value billed to the client for the project.
Add up every direct cost. Sum material, labor, subcontractor, equipment, and other direct project costs.
Allocate overhead. Add a share of company overhead (office, admin, insurance) to the project, usually as a percentage of direct cost.
Subtract total cost from revenue. Profit = Revenue − Total Cost. This is your dollar profit on the project.
Divide by revenue for margin. Profit Margin (%) = (Profit ÷ Revenue) × 100. This lets you compare profitability across projects of different sizes.

Worked example

A renovation contract is worth $320,000. Materials cost $140,000, labor $80,000, subcontractors $40,000, and other costs $12,000 — total cost $272,000. Profit is $320,000 − $272,000 = $48,000, a 15% profit margin.

Frequently asked questions

What counts as a direct cost?

Materials, labor, subcontractor payments, equipment rental, and permits directly tied to the project. Company-wide costs like office rent are overhead, not direct cost.

Should I calculate profit before or after tax?

Calculate pre-tax operating profit for project-level decisions — it reflects how well the project itself performed. Tax is a company-level, not project-level, consideration.

How often should I recalculate profit during a project?

Monthly at minimum, ideally tied to your billing cycle. Waiting until project close to check profit means you find out about a loss too late to fix it.