Job Profit Calculator

Calculate the true profit on any job after all costs — materials, labour, subcontractors and overhead allocation. See your gross margin, net margin and whether the job was actually worth doing.

Quick answer: Job Profit = Revenue − Materials − Labour − Subcontractors − Overhead. A $15,000 job with $8,000 in costs has $7,000 gross profit — but overhead allocation of $1,500 reduces net profit to $5,500.

🔨 Job Profit Calculator

Job Revenue ($)

Amount charged to client ex-GST

Materials ($)

Labour ($)

True labour cost including on-costs

Subcontractors ($)

Overhead Allocation ($)

Portion of annual overheads assigned to this job

Other Costs ($)

Permits, equipment hire, travel, waste disposal

Net Profit

—

Gross Profit

—

Gross Margin

—

Net Margin

—

📐 How It Works

Job profit is calculated by deducting all direct costs from revenue to get gross profit, then deducting overhead allocation to get net profit. Gross margin shows raw job profitability. Net margin shows true profitability after your business costs are accounted for.

Gross Profit = Revenue − (Materials + Labour + Subs + Other) Gross Margin = Gross Profit ÷ Revenue × 100 Net Profit = Gross Profit − Overhead Allocation Net Margin = Net Profit ÷ Revenue × 100

📋 Worked Example

Electrical job: Revenue $12,000. Materials $3,200, labour $4,800, subs $0, other $400. Gross profit = $3,600 (30% margin). Overhead allocation $1,200. Net profit = $2,400 (20% net margin).

❓ Frequently Asked Questions

Take your total annual overheads and divide by your total annual revenue to get an overhead rate. Apply that rate to each job's revenue. Example: $60,000 overheads ÷ $400,000 revenue = 15% overhead rate. A $12,000 job gets $1,800 overhead allocation.

Yes — always include a market-rate wage for your own time on the job. This prevents you confusing revenue with profit. If you don't cost your own labour, every job looks more profitable than it is.

Target 15–25% net margin (after overhead allocation) for most trade jobs. Jobs below 10% net contribute little to your business after overhead recovery. Jobs consistently below break-even net indicate a pricing problem.

Gross profit is revenue minus direct job costs only. Net profit also deducts your overhead allocation — the portion of your fixed business costs (insurance, vehicle, admin) assigned to that job. Net profit is the true bottom line.