How to read your result
Every result shows both markup and margin side by side, precisely because the two numbers are easy to confuse and expensive to mix up. Markup divides profit by cost — the natural number when you're pricing forward from a supplier invoice. Margin divides the identical profit by the selling price — the number that matters once the sale is made and you want to know how much of the revenue you actually kept. Switch to Target Margin mode if your goal was set as a margin rather than a markup: marking up by your target margin percentage always underprices, because markup multiplies while margin requires division. Watch the diagnosis badges for fee pressure and thin-margin warnings, and check the Ecommerce mode if platform, payment, or return fees apply — a healthy gross markup can quietly become a thin net margin once those come out.
Worked example
You buy a product for $50 and apply a 40% markup. Selling price = 50 × 1.40 = $70. Gross profit = $20. Gross margin = 20 ÷ 70 = 28.57% — not 40%, because margin divides by the price, not the cost.
Now suppose your target was actually a 40% margin. Then the selling price must be 50 ÷ (1 − 0.40) = $83.33, which is a 66.67% markup and $33.33 of profit per unit. The difference between $70 and $83.33 — about 16% of revenue — is what the markup/margin confusion silently costs on every sale.
At 100 units: the 40%-markup price earns $2,000 of gross profit; the 40%-margin price earns $3,333. Same product, same cost, same effort — the only difference is which denominator you priced with. The Target Margin mode shows this comparison automatically.
Limitations
- Does not replace accounting advice, and does not know competitor prices or guarantee sales volume.
- Does not automatically include taxes, refunds, chargebacks, depreciation, salaries, rent, interest, inventory shrinkage, or working capital — unless you enter them as costs.
- Gross margin is not net margin: a healthy-looking markup can still leave little after operating costs.
- Category "rules of thumb" (keystone, food multipliers, thin grocery markups) are conventions, not fixed rates — benchmark against your own cost base.
This is a pricing estimate, not bookkeeping. For the full revenue-to-net-profit waterfall see the profit margin calculator; for overhead coverage see the break-even calculator; for ad-spend limits see the break-even ROAS calculator.
Read the guide
For the full comparison of margin, markup, and break-even with worked examples, see Profit Margin vs Markup vs Break-Even: The Difference Explained.