Profit Margin Calculator
Enter a sale price, marketplace, item cost, and shipping costs to calculate net profit, net payout, marketplace fees, and the profit margin left after the sale clears.
$21.80
after eBay fees and costs
43.6%
profit divided by buyer-paid revenue
$7.20
14.4% effective fee rate
$42.80
before item and shipping costs
How to use margin
Profit margin shows how much of the buyer-paid revenue remains after fees and direct costs. A high dollar profit with a weak margin can still be risky if the item takes storage space, return risk, or repeated markdowns.
Use margin before sourcing repeat inventory. If a listing only works with perfect pricing and perfect shipping, the buy cost probably needs to be lower.
Related tools
Check the break-even floor before accepting offers, then compare payout across marketplaces when the same item could sell in more than one place.