Profit Margin vs Markup: The Difference That Costs Money
Margin and markup describe the same profit and divide it by different things, which is why the two numbers are never equal. The Profit Margin Calculator works from cost and selling price.
The two calculations
Buy something for 70 and sell it for 100. The profit is 30 either way.
Margin divides profit by the selling price: 30 over 100, which is 30 per cent. Markup divides profit by the cost: 30 over 70, which is 42.9 per cent.
Same transaction, same profit, two correct answers. Margin is always the smaller of the two, and the gap widens as profitability rises.
The error that costs money
Here is how it goes wrong. You want a 30 per cent margin, so you add 30 per cent to your cost - 70 plus 30 per cent is 91.
But at a selling price of 91 the profit is 21, and 21 divided by 91 is 23 per cent, not 30. You have under-priced by 9 and you will not notice until the year-end accounts.
To hit a target margin, divide the cost by one minus the margin. For 30 per cent: 70 divided by 0.7 equals 100. That is the price that produces a 30 per cent margin, and it is nearly ten per cent higher than the intuitive answer.
A few pairs worth memorising: a 20 per cent margin needs a 25 per cent markup. 30 needs 42.9. 40 needs 66.7. 50 per cent margin needs a 100 per cent markup, which is the clearest illustration that the two are not interchangeable.
Which one to use where
Margin for reporting and comparison. It is what accounts use, what investors ask about, and what makes two businesses comparable - because it is a proportion of revenue, which both sides understand.
Markup for pricing at the point of sale. It is easier to apply mentally when you know the cost and want a price, which is why retail and trade pricing is often expressed that way.
The rule that avoids all the confusion: know which one a figure is before acting on it. When a supplier says "we work on 40 per cent", ask which.
Gross, operating and net
One more distinction worth keeping straight. Gross margin counts only the direct cost of the goods. Operating margin also subtracts the cost of running the business - rent, wages, software. Net margin subtracts everything, including tax and interest.
A healthy gross margin and a negative net margin is an extremely common pattern in small businesses, and the gross figure is the one people quote. The Break-Even Point Calculator is the tool that brings fixed costs into the picture.
Common questions
Can margin exceed 100 per cent?
No - it is a proportion of the selling price, so 100 per cent would mean zero cost. Markup has no upper limit.
Which is better to quote to a customer?
Neither. Quote the price.
What margin should I aim for?
Entirely sector-dependent - grocery retail runs on single digits, software on very high gross margins. Your own costs and competitors decide it, not a benchmark.
How does a discount affect margin?
Disproportionately. On a 30 per cent margin, a 10 per cent discount removes a third of the profit.
Want to check a price against its margin?