What this guide helps you decide
Use the right profit formula when turning job cost into a customer price.
Use one profit definition from estimate through closeout. Start with a complete cost basis, decide whether the target is markup on cost or margin on selling price, and write the formula into the estimate so the percentage cannot change meaning.
The definitions
Markup is profit divided by cost. Margin is profit divided by the final selling price. The percentages are not interchangeable.
Why the difference grows
At higher profit targets the gap between markup and margin becomes larger, which can materially change a quote.
Use one language
Keep estimates, accounting reports, and post-job reviews on the same definition so the business does not compare unlike numbers.
Price risk after cost
Count direct cost, overhead, uncertainty, and scope risk before applying margin.
Review actual margin
After the job, compare the quoted margin with actual time, material, hauling, disposal, and rework.
Put this guide to work
Total direct cost, allocated overhead, and supported contingency before adding profit. For a margin target, divide cost by one minus the decimal margin; for markup, multiply cost by one plus the decimal markup. Label the result so the customer price is not mistaken for profit.
After completion, replace estimated cost with actual paid time, materials, hauling, disposal, subcontractors, rework, and other cost. Recalculate profit and margin from final revenue, then trace any gap to cost variance, scope change, discounting, or a formula mismatch.
Worked example: 25% markup is not 25% margin
Start with $4,000 of complete job cost. With a 25% markup, price = $4,000 × 1.25 = $5,000. Profit is $1,000, but margin is $1,000 / $5,000 = 20%.
To earn a 25% margin, price = $4,000 / (1 - 0.25) = $5,333.33. Profit is $1,333.33, and that profit is 25% of the selling price. The $333.33 difference comes only from using two different percentage definitions; it is not an extra cost or a rounding issue.
- Markup to margin: markup / (1 + markup).
- Margin to markup: margin / (1 - margin).
- Margin price: cost / (1 - target margin).
Use the markup vs margin calculator to check the conversion before a quote is sent.
Profit review checklist
- Confirm the cost basis includes direct cost and the intended allocation of overhead.
- Label every percentage as markup on cost or margin on selling price.
- Apply discounts to the selling price, then recalculate the resulting margin.
- Keep taxes or pass-through charges separate when they are not part of revenue or cost in your reporting method.
- Use actual revenue and actual cost during closeout; do not compare an actual margin with an estimated markup.
For the full quote review, use the compact equipment pricing checklist. Then use the estimate vs actual guide to identify whether a missed target came from the profit formula, a cost overrun, a discount, or unpriced scope.
Source note: These equations are arithmetic definitions, not a recommendation for a target percentage. Select profit targets with current cost records, capacity, risk, contracts, and qualified accounting or tax guidance where appropriate.
Markup and margin questions
Does Equipment Rate Calc publish local market prices?
No. This guide explains the relationship among cost, price, markup, and margin; it does not set a local profit target or customer rate. Choose targets that fit your costs, risk, capacity, and business requirements.
When should the price be recalculated?
Recalculate whenever the cost basis, discount, scope, or target changes. During closeout, use final revenue and actual cost rather than carrying the estimating percentage into the report.
Does the formula choose the right profit target?
No. It only applies the selected definition. Choose a target with your cost, capacity, risk, contract, and business requirements, and use qualified accounting or tax guidance for financial reporting.