Job costing

Job costing treats each project as its own little business with its own income and expenses. Instead of dumping every receipt and timesheet into one company-wide bucket, you tag each cost to the job it belongs to. At any point you can ask a simple question: for this job, how much have I spent so far, and against what I billed, am I ahead or behind?

The costs you track usually fall into a few buckets: direct labor (your crew's hours on that job), materials, subcontractors, equipment and rentals, and other direct costs like permits or dump fees. Many contractors also allocate a slice of overhead to each job so the job's profit reflects its true share of running the business.

Job costing only earns its keep when you compare actuals to the estimate. The estimate is your plan; the actuals are reality. The difference between them, line by line, is where you learn whether you are bidding accurately, whether a crew is productive, and whether a supplier's price creep is eating your margin.

Without job costing, you only know whether the whole company made money at the end of the year — and by then it is far too late to fix the jobs that lost it. A contractor can be busy, fully booked, and quietly losing money on a third of their work without ever knowing which third.

Job costing turns that fog into a list. It tells you which job types are reliably profitable, which customers or bid styles lead to overruns, and which phase of the work blows the budget most often. That is the feedback loop that makes your next estimate better than your last one.

It also protects cash flow. When you can see that a job's labor is tracking 15% over estimate at the halfway point, you can act — tighten scope, document a change order, or adjust the next draw — instead of finding out at closeout when the money is already spent.

Start by giving every job a code or name and making sure every cost gets that tag at the moment it happens: every timesheet entry, every material receipt, every sub invoice. The discipline is the hard part; the math is easy once the data is clean.

Then break each estimate into cost categories that match how you actually track spend, so estimate and actual line up apples to apples. If your estimate lumps everything into one number but your costs come in by category, you will never be able to see where the variance is.

Simple Contractor CRM is built around line-item estimates that become the project's plan, and it records payments and costs against that project, so the estimate-versus-actual comparison falls out of the normal bid-to-paid workflow rather than living in a separate spreadsheet.