Job Costing 101 for Construction & Trades

Two contractors can do the same volume of work and end the year in completely different financial shape—usually because one knows their job costs and the other does not. Job costing is the discipline that turns "we were busy" into "we made money on these jobs and lost it on those."

What is job costing?

Job costing is the practice of tracking all the costs of a specific project—so you can compare what a job actually cost against what you estimated and charged. It turns your books into a scoreboard for each job instead of one big lump.

What costs should you track per job?

How does job costing help you bid better?

When you know your real costs on past jobs, you can bid future work with confidence instead of guessing. You spot which types of jobs, customers, or crews are most profitable—and stop bidding the ones that lose money.

We set up job costing so you can see profit by project at a glance. See our construction bookkeeping services.

FAQ

Common Questions

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What is the difference between job costing and process costing?
Job costing tracks costs by individual project (common in construction); process costing averages costs across large volumes of identical units (common in manufacturing).
Does QuickBooks do job costing?
Yes, QuickBooks supports job costing when it is set up correctly with items, classes, and jobs. Proper setup is key to getting accurate reports.
Why is job costing important for contractors?
It tells you which jobs actually made money, helps you bid more accurately, and protects your margins—information you cannot get from a standard P&L alone.
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