Contractor Profitability Suite

Free Contractor Job Costing Calculator

Know your true job margin before you sign.

Job Inputs

hrs
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Results

On Target(target 20.0%)
Total Labor Cost$3,780.00
Total Estimated Cost$10,097.00
Gross Profit$14,903.00
Gross Margin %59.6%
Markup %147.6%

Labor cost includes burdened rate: $47.25/hr. Overhead is applied to labor + materials.

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Frequently Asked Questions

What is job costing for contractors?

Job costing is the process of tracking all costs — labor, materials, subcontractors, equipment, and overhead — against a specific job or project so you know exactly how much profit each job generates. For small contractors, accurate job costing is the difference between growing a profitable business and slowly leaking money on every project.

How do I calculate labor burden rate?

Labor burden is the additional cost on top of base wages. To calculate it, add your payroll taxes (FICA, FUTA, SUTA — typically 12%), workers' comp insurance (5–15% depending on trade), general liability insurance (3%), and benefits (health, PTO, retirement — around 5%). The total as a percentage of base wage is your labor burden rate. Multiply base wage × (1 + burden%) to get your fully loaded labor cost per hour.

What is a good profit margin for a contractor?

A healthy net profit margin for most contractors is 15–25%. Specialty trades like electrical and plumbing tend to run 20–30%, while general contracting and remodeling often land at 10–20%. Anything consistently below 10% suggests pricing, overhead allocation, or labor cost problems that need attention.

What is the difference between markup and margin?

Markup is profit expressed as a percentage of cost: (Price - Cost) / Cost. Margin is profit expressed as a percentage of the selling price: (Price - Cost) / Price. A 25% markup yields a 20% margin, not 25%. Confusing the two is one of the most common — and expensive — mistakes contractors make when pricing jobs and change orders.

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