Intervention margin calculator
See the real margin on each job — before you quote it.
Enter what you bill for an intervention and what it costs you (labour, materials, travel). The calculator shows your gross margin in your currency and as a percentage, so you can price jobs that actually make money.
Your intervention
What you invoice for this intervention
Total hours spent on the job
True cost per worked hour (wage + charges + overhead)
Cost of materials used
Fuel, tolls and travel time cost
Gross margin
$140.00
46.7% of the billed price
Indicative gross margin for a single intervention, excluding fixed costs and taxes.
How the margin is calculated
- 1Add up your cost: labour hours × loaded hourly cost, plus materials and travel.
- 2Subtract that total cost from the price billed to the client.
- 3The result is your gross margin in currency; divided by the billed price, it is your margin percentage.
Why intervention margin matters
A field service business can be busy and still lose money if jobs are underpriced. Knowing the margin of each intervention — including the true loaded cost of labour and travel — lets you quote confidently and spot the jobs that are not worth taking.
Frequently asked questions
What is a good margin for a field service intervention?
It depends on your trade and overheads, but many field-service SMBs target a gross margin of 20–35% per intervention before fixed costs. Use the loaded hourly cost, not the raw wage, to avoid overestimating.
What is the loaded hourly cost?
It is the true cost of one worked hour including employer charges and overhead, not just the gross wage. You can estimate it with our hourly cost calculator.
Does this include fixed costs?
No. This shows the gross margin of a single intervention (price minus direct labour, materials and travel). Your net margin also has to cover fixed costs like office, software and admin.