Free Contractor Profit Calculators — Built for the Trades
ContractorMargin.com gives contractors in every trade a fast, accurate way to calculate gross and net margin before a bid goes out. No login. No subscription. No bloated software. Just the numbers you need to price with confidence.
Why Margin Matters More Than Revenue
A $50,000 roofing job that costs $46,000 to complete leaves $4,000 — an 8% net margin that won’t keep the lights on. A $12,000 spray foam job with $5,200 in costs leaves $6,800 — a 57% gross margin that builds a real business. Revenue is vanity. Margin is survival. Every calculator on this site is built around that truth.
14 Trades. Real Benchmarks.
Each calculator includes 2026 industry benchmark ranges sourced from NAHB cost studies, trade association data, and real contractor financial reports. The benchmarks give you a target — and the calculator tells you instantly whether you’re hitting it. Green means you’re in the healthy range. Red means the bid needs work before it goes out.
How the Calculators Work
- Pick your trade. Each calculator is built around the real cost structure of that trade — not a generic formula.
- Enter your job details. Contract price, square footage, linear footage, or unit count — whatever the trade measures by.
- Add your real costs. Materials, labor, equipment, disposal, and overhead — every relevant cost category is included.
- Read your margin. Gross margin, net margin, and a color-coded benchmark comparison update in real time as you type.
- Adjust until the numbers work. Change your price, reduce a cost, or adjust crew size until the margin lands where it needs to be.
Who These Calculators Are For
These tools are built for working contractors who need a fast gut-check before sending a bid — not accountants running quarterly reports. If you’ve ever handed over a proposal and wondered whether you priced it right, these calculators are for you. They’re also useful for new contractors learning to price their first jobs, and for experienced operators who want a faster way to validate estimates on the fly.
Trades Covered
ContractorMargin.com covers roofing, HVAC, plumbing, painting, electrical, trim carpentry, flooring, drywall, concrete, tile, insulation, windows & doors, fencing, landscaping maintenance, and landscaping installation — the 14 most common residential and commercial contracting trades in the United States.