Contractor Job Costing Spreadsheet: Know Which Jobs Make Money
Updated November 7, 2026
Job costing compares what a job earned with what it actually cost. Without it, a busy year can still be an unprofitable one.
Try it free: Job Costing Calculator
Enter a job's contract value, change orders and costs by type to see gross profit, margin and variance from estimate.
Open the calculatorTrack five cost types
Labour, materials, subcontractors, equipment and other job-specific costs. Log each cost against a job number as it happens — not at the end of the month.
Compare with the estimate
The difference between estimated and actual cost shows where estimates need adjusting. Over a few jobs this improves pricing more than anything else.
Questions
Should overhead be included?
Keep company overhead separate. Job costing measures gross profit; overhead is covered by your markup.
