Profit Margin vs Markup: The Pricing Mistake That Costs Sellers Money
By Saurabh Pandey · Updated · 3 min read
On this page
“I add 50% to my costs, so I make a 50% margin.” It sounds right – but it is wrong, and it is one of the most expensive mistakes a seller can make. A 50% markup is only a 33% margin. Price with the wrong one and you could be making far less than you think, especially once fees, discounts and returns are taken out.
This guide explains the difference in plain terms, gives you the formulas and a conversion table, and shows how to price for the margin you actually need.
The difference in one sentence
- Markup compares your profit with your cost.
- Margin compares your profit with your selling price.
Same profit, different yardstick – so the percentages come out different.
The formulas
Profit = Selling price − Cost
Markup = Profit ÷ Cost × 100
Margin = Profit ÷ Selling price × 100
Example
You buy a product for $40 and sell it for $60.
- Profit = $60 − $40 = $20
- Markup = $20 ÷ $40 = 50%
- Margin = $20 ÷ $60 = 33.3%
Both numbers are correct. They just answer different questions: markup tells you how much you added to your cost; margin tells you how much of every sale you keep.
Try it yourself – the calculator shows profit, margin and markup together:
Profit Margin Calculator
Open full calculatorFee breakdown
Enter your numbers to see the result.
Margin to markup conversion table
| Margin | Equivalent markup | Price for a $10 cost |
|---|---|---|
| 10% | 11.1% | $11.11 |
| 20% | 25% | $12.50 |
| 25% | 33.3% | $13.33 |
| 30% | 42.9% | $14.29 |
| 40% | 66.7% | $16.67 |
| 50% | 100% | $20.00 |
| 60% | 150% | $25.00 |
| 75% | 300% | $40.00 |
Notice that margin can never reach 100% (you would need to get the product for free), while markup has no upper limit.
Converting between them
Markup = Margin ÷ (1 − Margin)
Margin = Markup ÷ (1 + Markup)
For example, a 40% margin is 0.4 ÷ 0.6 = 66.7% markup. A 25% markup is 0.25 ÷ 1.25 = 20% margin.
Why the difference matters so much
Most business costs are a percentage of the selling price, not of your cost:
- marketplace fees (Etsy, eBay, Amazon),
- payment processing,
- sales commissions and affiliate payouts,
- discounts and coupon codes,
- VAT and GST included in consumer prices.
Because these all come off the selling price, margin is the number that tells you whether you can afford them. If your margin is 33% and fees plus a promotion take 25% of the price, you are left with just 8% – even though you thought you had “added 50%”.
A real example
A seller buys a product for $40 and adds a 50% markup, selling for $60. They sell on eBay, where fees are roughly 14% of the sale, and offer a 10% discount code.
- Discounted price: $60 × 0.9 = $54
- eBay fees (~14%): about $7.56
- Profit: $54 − $7.56 − $40 = $6.44
That is a margin of about 12% – a long way from the “50%” the seller believed they were making. Check your own situation with our eBay or Etsy fee calculators.
How to price for the margin you need
Instead of adding a markup to your cost, start from the margin you want:
Selling price = Cost ÷ (1 − Target margin)
If a product costs $40 and you need a 45% margin:
$40 ÷ (1 − 0.45) = $40 ÷ 0.55 = $72.73
Round to a sensible retail price like $72.99 or $74. Our calculator does this for you: choose Selling price for a target margin.
Choosing a target margin
Your target margin needs to cover everything that is not in your product cost:
- Platform and payment fees (often 5–15%)
- Advertising (varies widely – 10–30% of revenue is common for stores that rely on ads)
- Returns, damages and refunds
- Discounts and promotions
- Overheads: software, tools, storage, your time
- Profit for the business
That is why many online sellers aim for a gross margin of 50% or more on the products they make or buy – after all those costs, the final net profit is often 10–20%.
Gross margin vs net margin
- Gross margin = (Revenue − Cost of goods) ÷ Revenue. It only looks at product cost.
- Net margin = Net profit ÷ Revenue, after all expenses – fees, ads, shipping, salaries, software and tax.
A product with a healthy 60% gross margin can still lose money if advertising and fees take 65% of revenue. Track both.
Common mistakes
- Saying “margin” when you mean “markup”. Suppliers, wholesalers and retailers use both – always ask which one someone means.
- Using markup to set prices when fees are percentage-based. Price from margin.
- Forgetting VAT or GST. Calculate margin on the price without tax. See how to remove VAT from a price.
- Discounting without checking. A discount comes straight out of your margin. Read how to run a sale without losing money first.
The bottom line
Markup is based on cost; margin is based on price. Because fees, discounts and tax all come out of the selling price, margin is the number to price by. Decide the margin you need, divide your cost by (1 − margin), and check the result in our free profit margin calculator.
Frequently asked questions
Is a higher markup or margin better?
Both measure the same profit, so a higher number is better on either scale – just do not compare a markup with a margin.
What is a good profit margin for an online store?
It varies by industry, but many product-based online stores aim for a gross margin of 40–60%, leaving room for fees, marketing and returns.
Why do retailers use markup?
Markup is quick to apply to a cost price. Keystone pricing – doubling the cost, a 100% markup – is a traditional retail rule that gives a 50% margin.