Revenue tells you how much work came in. Job costing helps you understand whether the work was profitable after the real costs were counted.
What job costing tracks
A useful job-costing process groups project activity by job so you can compare estimated costs, actual costs, billed amounts, and gross profit. For contractors, this often includes:
- Labor directly tied to the job
- Materials and supplies
- Subcontractor costs
- Equipment, rentals, fuel, and jobsite expenses
- Permits, fees, disposal, and project-specific costs
- Allocated overhead when appropriate
The goal is not to create complicated reports. The goal is to identify which jobs support the business and which jobs quietly drain cash, time, and margin.
Why it matters
Without job costing, a contractor may know total sales and total expenses, but still not know which projects performed well. That can lead to underbidding, missed change orders, payroll pressure, and jobs that look busy but do not create enough profit.
Where to start
Start simple: assign income and direct costs to each job as consistently as possible. Then review project profitability monthly instead of waiting until year-end.