Margin and markup are related pricing concepts, but they use different bases. Confusing them is a common reason sellers overestimate the profitability of a listing.
What is markup?
Markup compares the amount added to the cost with the cost itself. If a product costs 100 and is sold for 150 before considering other expenses, the markup is 50% on cost.
Markup is useful as a pricing shortcut, but it does not automatically represent the final net profit percentage.
What is profit margin?
Profit margin compares profit with the sale price. If a sale produces 20 of net profit on a 100 sale, the net margin is 20%.
For marketplace sellers, margin is often more useful for evaluating the final result after commissions, taxes, logistics and advertising.
Why the numbers are different
A 25% markup does not equal a 25% margin because the denominator changes. Markup uses cost, while margin uses revenue.
The difference becomes even more important when the platform charges percentage fees on the sale price.
How marketplace fees affect the calculation
Commissions, taxes and Ads usually consume a percentage of revenue. If you set price only by multiplying cost by a markup, those variable charges may reduce the actual margin below your target.
A better approach is to model fixed costs, variable fees and desired margin together.
Which metric should sellers monitor?
Markup can remain useful for internal price rules, while net margin is valuable for measuring the profitability of the final sale.
Use both when they help your operation, but make sure everyone on the team uses the same definitions.
Apply what you learned directly with the free Ajuda Seller tools.
Open Ajuda Seller tools →Frequently asked questions
Is 30% markup the same as 30% margin?
No. Markup is based on cost and margin is based on selling price.
Which metric is better for marketplace profitability?
Net margin is usually clearer for understanding what percentage of sales remains as profit after costs and fees.
Can I use markup and still calculate marketplace fees?
Yes, but the final price should still be checked against all percentage and fixed fees.