Profit Margin vs Markup: Why Small Businesses Confuse Them
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Try Margin Calculator FreeProfit margin and markup describe the same dollar amount of profit but divide it by two different numbers: margin uses the selling price as the base, markup uses the cost. That difference means a 50% markup only produces a 33% margin, never the matching figure people assume. Businesses that mix the two up without realizing it are usually pricing lower than they intend.
Key takeaways
- Margin is profit as a percentage of the selling price. Markup is profit as a percentage of the cost price.
- A 50% markup on cost only produces a 33% margin, not 50%: the two numbers are never equal above 0%.
- Confusing the two is a common, quiet way businesses underprice their work without realizing it.
- Decide which figure you're targeting before setting a price, and check the other one as a sanity check afterward.
The Difference in One Line
Margin is profit divided by the selling price. Markup is profit divided by the cost price. Both describe the same profit in dollars, but as a percentage of two different base numbers, which is exactly why they never match.
Worked Example
A job costs 50 to deliver, and you charge 75. Profit is 25. As a margin, that's 25 / 75 = 33.3%. As a markup, it's 25 / 50 = 50%. Same job, same 25 profit, two different-looking percentages depending on which base you divide by.
| Cost | Selling price | Profit | Margin | Markup |
|---|---|---|---|---|
| 50 | 75 | 25 | 33.3% | 50% |
| 100 | 150 | 50 | 33.3% | 50% |
| 200 | 250 | 50 | 20% | 25% |
| 80 | 200 | 120 | 60% | 150% |
Which One Should You Target
Margin is generally the more useful number to plan around, since it directly tells you what share of each sale is profit versus cost, which is what actually funds your own income and overheads. Markup is more useful when you're thinking in terms of "how much do I add on top of what I paid."
A free profit margin and markup calculator that shows both figures side by side, whichever one you start from, means you never have to do the cross-check math by hand before quoting a job.
Frequently asked questions
Is a 100% markup the same as a 100% margin?
No. A 100% markup on a 50 cost gives a 100 price, which is a 50% margin, not 100%.
Which is higher, margin or markup, for the same job?
Markup is always the higher number of the two (for any profitable price), since it's divided by the smaller cost figure rather than the larger selling price.
How do I convert a target margin into a selling price?
Divide the cost by (1 minus the target margin as a decimal). For a 30% margin on a 70 cost: 70 / 0.7 = 100.
What margin should a small service business aim for?
It varies widely by industry, but many service businesses target 20-50% margin after accounting for their own time and overhead. Check what's typical in your specific field.
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