On The Wire · 2026-08-02 · 7 min
Ask an e-commerce merchant what payments cost them and they quote the processing rate. 1.2%. The real number is roughly double that, and most of it never appears on the processor's invoice. A retailer doing €22 million a year pays €264,000 in card processing. They also lose €104,000 to fraud and prevention tooling, €65,000 to false declines where their own filters blocked real customers, €42,000 to chargeback fees and the staff time behind them, and €30,000 to reconciliation and chasing expired cards. Total: €505,000. That is 2.3% of revenue, not 1.2%. The line that gets ignored is false declines. 1.5% of legitimate customers are turned away by fraud filters. They do not retry. That is lost revenue that shows up nowhere in a payments report, because a sale that never happened has no invoice. Add A2A at 25% adoption and the picture changes on five lines at once. Processing drops €38,500. Fraud drops €20,900, because bank authentication takes the A2A fraud rate to 0.02%. €16,000 of previously declined revenue completes. Chargebacks fall €10,140. Expired card friction is worth another €8,000. Combined: €93,540 a year against a €9,000 integration. Break-even in 35 days.
E-commerce Checkout Optimization: Beyond Card Payments - Full Episode | On The Wire79 / 100Merchant Integration: From Zero to Live in 2-4 Weeks - Full Episode | On The Wire48 / 100Merchant Integration: From Zero to Live in 2-4 Weeks - The Briefing | On The Wire40 / 100The Business Case for Banks to Offer A2A Payments - Full Episode | On The Wire49 / 100The Economics of Payment Processing: A Complete Breakdown - Full Episode | On The Wire76 / 100