MultiChannel Profit Calculator — UK Seller Fees

Calculate real profit after platform fees, shipping, and VAT across 11 major UK selling channels.

Stop guessing your margins. MultiChannel Profit Calculator shows your real net profit after all platform fees, shipping costs, and VAT — directly on the listing page. How it works: • Browse a product listing on any supported selling channel • The extension reads the item price and automatically calculates fees • See your net profit and margin percentage in an on-page overlay Key features: • Real-time profit calculations while you browse listings • Accounts for platform commission, payment processing fees, and VAT • Customisable cost of goods and shipping rates • Compare profitability across channels from the popup • Works on 11 major UK selling channels • All data stored locally — nothing leaves your browser Built for UK e-commerce sellers by WMS 360.