Job Profitability Calculator

Analyze completed jobs to see if you made a profit or loss

Job Details

Amount invoiced to customer

£

Actual Costs

Wages paid per hour

£

What you paid for materials

£

Subcontractors, permits, equipment hire, etc.

£
Job Profit
£0.00
0% profit margin
Total Revenue
£0.00
Total Costs
£0.00

Cost Breakdown

Labour Costs £0.00
Materials Costs £0.00
Other Costs £0.00
Total Costs £0.00

Why Track Job Profitability?

Many trade businesses are busy but not profitable. Tracking each job helps you understand which work is worth doing.

Common Profit Killers

  • Scope creep - Extra work added without adjusting the price
  • Underestimating time - Jobs take longer than quoted
  • Material waste - Ordering too much or making mistakes
  • Multiple site visits - Travel time eating into profit
  • Hidden costs - Forgetting permits, parking, disposal fees

What to Do With This Data

  • Identify patterns - Which job types are most profitable?
  • Improve estimating - Learn how long jobs actually take
  • Adjust pricing - Increase quotes for consistently unprofitable work
  • Focus efforts - Do more of the work that pays well
  • Cut losses - Stop accepting unprofitable clients or job types

Markup vs Profit Margin

They're the same profit, measured two ways. Say a job costs you £600 and you charge £1,000:

Markup

67%

Costs £600
+ £400

£400 added on top of your costs. It's what you add when you price a job.

Profit margin

40%

Costs £600
Kept £400

£400 kept out of the £1,000 price. It's what's left after the job is paid for.

The outlined part is what the £400 is measured against. That's why the percentage you add is always bigger than the share you keep:

Add to your costs You keep from every £1
25%20p
50%33p
67%40p
100%50p

ProWorks shows markup on quotes, invoices and the dashboard, since that's how most trades price materials and labour.

Target Profit Margins

Aim for a 30-40% profit margin (a 43-67% markup on costs) on small jobs and 20-30% on larger projects (a 25-43% markup). Lower margins are acceptable on very large jobs with predictable costs.