A useful job margin starts with complete costs.

Start with a consistent revenue basis

For an operational job review, use issued invoice revenue excluding pass-through sales tax. Do not mix estimates with completed sales or mix currencies in a single total. Record your chosen basis so everyone reviewing the result interprets it the same way.

Make direct costs traceable

Materials, outside services and job-related expenses need descriptions and quantities. Allocate labor on a consistent basis, and identify whether the number includes gross wages only or also employer costs. Missing costs make a margin look stronger without changing the economics of the work.

Distinguish margin from markup

Gross profit is revenue minus cost. Margin is that difference divided by revenue; markup divides it by cost. With 1,000 in revenue and 750 in costs, the difference is 250: a 25% margin and a 33.33% markup. They answer different questions.

Do not call preliminary margin net profit

Rent, insurance, office salaries, software, equipment depreciation and other overhead still matter. A job-level number that leaves them out should say so. Use it to identify questions, then review the wider business with your accounting records.

Review corrections as part of the history

If an entered expense was wrong, preserve the original record and the reason for correcting it. A refunded collection also deserves attention, but it does not automatically tell you how to adjust the original sale or tax treatment. Keep operational records and accounting decisions aligned.

By CrewBeam · Updated September 29, 2026. Operational guidance; adapt to your own business.