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Confusing markup with margin is the most expensive arithmetic mistake in small business. Enter your costs and target margin — get the price you should quote.
Markup-vs-margin table plus the three costs most owners forget to include in a quote.
Margin is profit as a percentage of the price. Markup is profit as a percentage of the cost. They're different numbers for the same job, and mixing them up quietly erodes profit on every quote.
A 30% margin needs a 42.9% markup. If you add 30% to cost thinking you've got a 30% margin, you actually earn about 23% — and you've given away roughly a quarter of your profit without noticing.
Price = total cost ÷ (1 − margin).
Markup % = (price − cost) ÷ cost × 100.
The costs above are the direct ones. Insurance, vehicle, phone, software and the hours spent quoting are real too — they come out of the profit shown here. If your margin only just covers overhead, the job pays you nothing for the risk of doing it.