We Can’t See Job Profit Until It’s Too Late
Why job costs arrive weeks late, and how to see an overrun while you can still do something about it
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Short answer: you can't see job profit in time because labour, materials and subcontractor costs reach the job weeks after they happen. Timesheets are processed late, bills are coded when they are paid and subbie claims arrive at month-end, so an overrun only shows once the job is finished. The fix is to get each cost against the job when it is incurred, count what you have committed to spend, and compare it with the estimate every week rather than at the end.
This is common in construction and trades, manufacturing job shops, fabrication and project-based services: any business that quotes by the job. You price the work carefully, the team gets on with it, and the first real look at the margin comes after the final invoice. By then the lesson is useful for the next quote, but it is too late for this one.
Signs You Have This Problem
- You find out a job lost money after it is finished and invoiced
- Job reports are only trusted once month-end is done
- Timesheets reach the job a week or more after the work
- Supplier bills are coded to jobs when they are paid, not when the goods arrive
- Subcontractor claims turn up in a batch at month-end
- Project managers keep their own spreadsheet of what they think the job has cost
- Variations are done on site but priced and billed much later, if at all
Why Job Costs Arrive Late
Each cost travels a different path to the job, and each path has its own delay.
Labour arrives late
Hours are written on paper or entered in an app, approved at the end of the week, then processed through payroll. The cost reaches the job a week or more after the work, and often at the wage rate rather than what the hour really costs you.
Materials are coded when paid
Goods arrive on site or in the workshop, but the bill is entered weeks later, sometimes against the wrong job or a general account. Until then, the job report doesn’t know the materials were used.
Subcontractor claims come in batches
Subbies claim monthly or at milestones. Between claims, the job shows none of their cost, even though the work is well under way.
Commitments aren’t counted
Purchase orders and subcontracts you have agreed to aren’t in the job report until they are billed, so the report shows what has been paid, not what the job will cost.
The job system and the accounts disagree
Some costs are in the job system, some only in Xero or MYOB, and some in a spreadsheet. Nobody sees the whole job in one place until someone pulls it together by hand.
Estimates aren’t compared with actuals
The estimate sits in a quoting tool or spreadsheet, and the actual costs sit elsewhere. Without a regular side-by-side, an overrun is a surprise instead of a trend you saw coming.
How to See Job Profit Sooner
Start with the simplest changes. Each one shortens the delay on its own, so you can stop when the job reports arrive soon enough to act on.
- Get labour onto the job daily. Hours entered against a job and cost code on the day, costed at what an hour really costs you, not just the wage.
- Code materials when they arrive. Raise purchase orders against jobs and match bills to them as they come in, so the cost lands on the right job without waiting for payment.
- Count committed costs. Show open purchase orders, subcontracts and approved variations alongside actual costs, so the report shows where the job is heading. Construction job costing or manufacturing job costing
- Connect the job system and the accounts. So costs entered in one place appear in the other without retyping, and every cost has a job. Builder accounting integration
- Review estimate against actual every week. A short weekly report per live job, showing estimate, actual, committed and forecast to complete, so an overrun is a conversation while the job is still running. WIP reporting
When a simple fix is enough
If one cost type causes most of the delay, such as timesheets that take a fortnight to process, fix that first. Getting labour onto jobs daily, or coding bills on arrival, may give you most of the visibility you need without any new system.
For the full picture of job costing, WIP, claims and cash flow, read our construction finance systems guide. If your job figures and the accounts tell different stories, see why our systems give different numbers, or go back to other signs your systems are costing you time.
Job Profit FAQs
Why do we only find out a job lost money after it is finished?
Because the costs arrive late. Timesheets are approved at the end of the week or fortnight, supplier bills are entered when they are paid, and subcontractor claims turn up at month-end. By the time all of that reaches the job, the work is done and the overrun can’t be fixed, only explained.
What are committed costs, and why do they matter?
Committed costs are what you have agreed to spend but haven’t been billed for yet: purchase orders, subcontracts and approved variations. Counting them alongside actual costs shows where a job is heading, not just what has been paid so far. Without them, a job can look healthy right up until the bills arrive.
Do we need new job management software?
Often not. Many job systems, and Xero or MYOB with tracking categories or projects, can hold the costs. The gap is usually how quickly and reliably the costs get there. Faster timesheets, purchase orders raised against jobs and bills coded to jobs on arrival can change the picture with the software you already have.
Does this apply outside construction?
Yes. Any business that prices work by the job sees the same pattern: trades and field service, manufacturing job shops and make-to-order work, engineering and fabrication, and project-based services. The costs differ, but the problem is the same: they reach the job after the decisions have been made.
Where should we start?
Take one recent job that lost money and trace when each cost was incurred and when it reached the job. The longest delays show you what to fix first. If you want help, start with a free initial chat. If several processes and systems are involved, the Process & Systems Audit maps them for a fixed $5,000.
Want to talk it through? Book a free initial chat.
Finding Out About Job Losses Too Late?
Tell us how your job costs travel from the field to the report. We'll tell you honestly where the delays are and what to fix first.
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