Know Your Margins, Maximise Your Stack
Stop letting fees and postage eat your hard-earned revenue. Enter your numbers below to see exactly which platform keeps the most cash in your stack.
In the world of UK reselling, there is a massive difference between Revenue and Profit. A £100 sale on eBay doesn’t mean £100 in your pocket once you factor in the “Triple Threat”: Platform Fees, Postage Costs, and your Original Sourcing Price.
Use our real-time profit calculator to instantly compare margins across eBay, Vinted, Amazon, Depop, and Etsy. Simply enter your numbers below to see which platform puts the most cash in your stack.
💰 Profit Calculator
Calculate real profit after fees, shipping, and costs.
Enter values to see your margin.
Understanding Your Results: Revenue vs. Net Profit
Our calculator uses the latest 2026 fee structures to show you three vital numbers:
- Total Profit (£): Exactly what you keep after every single expense is deducted.
- Profit Margin (%): Your “ROI” (Return on Investment). A healthy reselling business should aim for a margin of 20% or higher.
- The Winner: We highlight the platform where you walk away with the most money. (Hint: It’s usually Vinted for clothing due to their zero-seller-fee model!)
Costs Every Reseller Needs to Track
To get the most accurate result from this calculator, don’t forget these “hidden” expenses:
- Packaging Materials: Tape, mailers, and bubble wrap usually add 20p–50p per order.
- Promoted Listing Fees: If you use eBay’s “Promoted” feature, remember to add that percentage (typically 2%–10%) to your Marketplace Fee field.
- Fuel & Transport: If you drive to a Post Office or Evri drop-off point, factor in your travel costs.
Where Should You Sell?
Vinted: Best for low-value items and clothing. Since the buyer pays the protection fee, your profit is maximized.
eBay: The gold standard for reach. High fees (avg. 12.8% + 30p) are often worth it for the speed of sale.
Amazon FBA: Ideal for high-volume scaling, but keep an eye on storage fees which can quickly turn a profit into a loss.
FAQ
Q: Does this calculator include VAT? A: This calculator is designed for sole traders and hobbyists under the VAT threshold. If you are VAT registered, remember to deduct 20% from your gross sale price.
Q: What is a ‘Fixed Fee’? A: Most platforms (except Vinted) charge a flat fee per transaction (usually 30p). This is why selling very cheap items (under £5) on eBay can be difficult to make profitable.
Q: How do I increase my profit margins? A: The fastest ways are to source lower (charity shop hunting/bundles) or optimise shipping (using services like Royal Mail Click & Drop or Evri via Shopify/eBay integrations).