Markup vs Margin: The Pricing Mistake That Costs Small Businesses
Ask ten small business owners for their "margin" and several will give you their markup instead. The two numbers are related but different, and confusing them can quietly wipe out profit. Here is the difference, with examples.
The definitions
Markup = (price − cost) ÷ cost
Margin = (price − cost) ÷ price
Both use the same profit, price minus cost, but divide by different numbers. Markup compares profit with what you paid; margin compares profit with what the customer paid.
A worked example
You buy a product for $40 and sell it for $60. Profit is $20.
- Markup: $20 ÷ $40 = 50%
- Margin: $20 ÷ $60 = 33.3%
Same product, same profit, two very different percentages.
Where the mistake happens
Suppose you know your business needs a 40% margin to cover rent, wages and other overheads. If you simply add 40% to your $40 cost, you charge $56. That is a 40% markup, but only a 28.6% margin. To get a true 40% margin you need to divide by (1 − margin):
Price = cost ÷ (1 − target margin) = $40 ÷ 0.60 = $66.67
On every sale, the difference is $10.67. Across a year of sales, that gap can be the difference between profit and loss.
Quick conversion table
| Markup | Margin |
|---|---|
| 25% | 20% |
| 50% | 33.3% |
| 66.7% | 40% |
| 100% | 50% |
| 200% | 66.7% |
Margin = markup ÷ (1 + markup) Markup = margin ÷ (1 − margin)
Which one should you use?
- Use markup when setting prices from supplier costs, because it is easy to apply.
- Use margin when judging profitability, comparing products or talking to lenders and investors, because it shows what share of each sale you keep.
The key is to decide your target margin first, based on your overheads, then convert it to the markup you apply.
Check the full picture
- Work out the price for your target margin with the profit margin calculator.
- Confirm the markup with the markup calculator.
- Check how many units you need to sell to cover fixed costs with the break-even calculator.
Don't forget hidden costs
Your "cost" should include everything it takes to get a product ready to sell: shipping in, packaging, payment processing fees and any marketplace commission. Leaving these out makes both markup and margin look better than they really are.
This guide is for general education and planning. It is not personal financial, medical, tax or legal advice. See our disclaimer.
