Capture the job facts
Record the service type, vehicle or asset description, location, date, quoted amount and included work. A consistent intake makes later comparisons more meaningful.
Show the assumptions
List products, consumables, labour hours, travel distance and any subcontractor or disposal cost. If an input is estimated, label it instead of presenting it as an observed result.
- Keep GST or tax treatment explicit.
- Separate fixed overhead from job-specific cost.
- Use a notes field for unusual site conditions.
Illustrative calculation
For example, a quoted job of $250 less $35 consumables, $80 labour and $20 travel leaves $115 before fixed overhead. This is an illustrative calculation only; confirm GST and tax treatment professionally and replace every input with the operator's own numbers.
Use the output carefully
A margin estimate is a planning aid, not a guarantee. Compare the estimate with actuals after the job and update the assumptions that repeatedly miss.