
Most contractors confuse these two, and it quietly costs them thousands of dollars a year. Here is the clear explanation, and the calculator to get it right.
Same job. Same cost. Same selling price, but markup and margin tell you different things.
Markup measures how much you add on top of your cost. It's calculated as a percentage of what you paid, not what you charged.
Example: You spend $800, sell for $1,000.
Markup = $200 / $800 = 25%
Gross margin measures how much of your selling price remains after direct costs. It's calculated as a percentage of what you charged the client.
Example: You spend $800, sell for $1,000.
Margin = $200 / $1,000 = 20%
A contractor says, "I want to make 30% profit", so they add a 30% markup to every job. But a 30% markup only gives them a 23.1% margin. Over a $500,000 year, that gap is worth over $34,000 in missing profit.
If you want a certain gross margin, here is the markup you actually need to charge.
| Target Gross Margin | Required Markup | Example: $1,000 Cost | Profit |
|---|---|---|---|
| 10% | 11.1% | $1,111.11 | $111.11 |
| 15% | 17.6% | $1,176.47 | $176.47 |
| 20% | 25.0% | $1,250.00 | $250.00 |
| 25% | 33.3% | $1,333.33 | $333.33 |
| 30% | 42.9% | $1,428.57 | $428.57 |
| 35% | 53.8% | $1,538.46 | $538.46 |
| 40% | 66.7% | $1,666.67 | $666.67 |
| 50% | 100.0% | $2,000.00 | $1,000.00 |
Highlighted rows (25-30%) are the most common target range for contractors and trades.
Enter your cost and selling price, see your markup and margin instantly.
Enter your cost and your desired profit percentage, see what happens if you apply it as a markup vs. as a margin.