Margin vs. Markup: The Pricing Mix-Up That Costs Real Money

Same two numbers, different denominator

Profit margin and markup are both calculated from cost and selling price, which is exactly why they're so easy to confuse — but they divide the profit by different things. Margin divides profit by the selling price; markup divides profit by the cost. Since selling price is always higher than cost (assuming you're profitable), margin and markup are never the same number for the same sale.

A concrete example

Take an item that costs $20 and sells for $35. Profit is $15. Margin is $15 ÷ $35 = 42.9%. Markup is $15 ÷ $20 = 75%. Someone aiming for "50% profit" could mean either a 50% margin (which requires a much higher markup than 50%, roughly a 100% markup) or a 50% markup (which is only about a 33% margin) — two very different pricing outcomes from the same phrase.

Why the confusion is expensive

If a business plans its pricing assuming "50% margin" but a spreadsheet or supplier actually calculated a 50% markup, the business ends up with meaningfully less profit than planned on every single sale — a gap that compounds across volume and can be the difference between a healthy and a struggling product line.

Which one should you use?

Margin is generally the more useful number for pricing strategy, since it directly tells you what percentage of each sales dollar you keep, which is what matters for covering fixed costs and overall profitability. Markup is more common in retail and wholesale conversations because it's calculated directly from a known cost. Knowing which one a number refers to — and converting between them when needed — avoids costly misunderstandings.

Calculate both at once

Our Profit Margin Calculator takes your cost and selling price and instantly shows profit, margin and markup side by side, so there's no ambiguity about which number you're looking at.