Ecommerce Profit Calculator
Calculate your actual profit per order after product costs, shipping, platform fees, and advertising spend. Works for Shopify, Amazon, eBay, and Etsy.
Price customer pays
What you pay for the product
Your shipping cost
Average ad spend per sale
About This Calculator
Ecommerce Profit Calculator is designed specifically for UK businesses and individuals. All calculations use current 2025/26 rates and follow HMRC guidelines.
Completely free with no signup required. Results are instant and calculated in your browser — no data is sent to our servers. For significant financial decisions, consult a qualified UK accountant or financial adviser.
How to use this calculator
- 1Enter your product cost, shipping cost, platform fee percentage (Shopify, Amazon, eBay, or Etsy), payment processing fee, advertising cost per order, and returns allowance. The calculator shows your real profit per order and margin.
- 2Most ecommerce businesses underestimate their true costs by forgetting platform fees, payment processing (typically 1.5–3%), and a realistic returns allowance. This calculator includes all of them.
- 3If your net margin is below 10%, review each cost line. Platform fees on Amazon FBA can reach 30–40% of the selling price. Reducing ad spend per order (improving ROAS) is usually the fastest route to better margins.
Use alongside
Pair this tool with our other free calculators: Contractor vs Employee Calculator, IR35 Calculator.
Also known as
Frequently Asked Questions
Related Articles
How to Price Your Products: The Complete UK Guide
Pricing is one of the most impactful decisions you will make. Get it right and your business thrives. Get it wrong and you work hard for nothing.
Markup vs Margin: The Difference Between Margin and Markup Explained
Confusing markup and margin is one of the most common pricing mistakes in business. Here is the clear explanation.
Last updated: 1 April 2026 · Rates for 2025/26 tax year