Margin vs. Markup: The Mistake That Costs Business Owners Thousands
April 4, 2026 · 5 min read · By Josh Menold
I've watched business owners leave tens of thousands of dollars on the table — every year — because of one confusion: the difference between margin and markup.
They're not the same thing. And when you use one when you mean the other, you underprice every single job.
The Simple Version
Markup
What you ADD to your cost.
Markup = 35%
Price = $10,000 × 1.35 = $13,500
Margin
What you KEEP from the sell price.
Margin = 35%
Price = $10,000 ÷ (1 - 0.35) = $15,385
See the difference? Same 35%. Almost $1,900 apart. On a $10,000 job.
If you're running 100 jobs a year and you're using markup when you think you're using margin, you're leaving $190,000 on the table. That's not a rounding error — that's a full-time employee, a new truck, or the cash reserve that saves you during a slow quarter.
Why It Matters
When your accountant talks about gross margin, they mean: what percentage of your sell price do you keep after direct costs?
When your estimator uses markup, they mean: what percentage am I adding on top of my costs?
These two people are using different math for the same job. And if you don't catch it, you end up with a target margin of 35% and an actual margin of 26%.
The Conversion Table
| Target Margin | Required Markup | On a $10K Job |
|---|---|---|
| 20% | 25% | $12,500 |
| 25% | 33.3% | $13,333 |
| 30% | 42.9% | $14,286 |
| 35% | 53.8% | $15,385 |
| 40% | 66.7% | $16,667 |
| 45% | 81.8% | $18,182 |
| 50% | 100% | $20,000 |
Notice: a 35% margin requires a 53.8% markup. Not 35%. If you're marking up 35% and thinking you have a 35% margin, you're actually at 25.9%.
The Formula
What to Do About It
- Audit your current pricing.Pull your last 10 jobs. Calculate the actual margin (profit ÷ sell price). If it's lower than you thought, you've been using markup instead of margin.
- Standardize the language. Make sure everyone — estimators, project managers, salespeople — uses the same term the same way. Post the conversion table in the office.
- Use our Pricing Calculator. It does the math for you. Enter your costs, set your target margin, and get the right price every time.
Try the Pricing Calculator
Enter your job costs, set your target margin, and see the right price — plus a “What If” comparison at different margins.
Open Pricing Calculator →