What are Vendor chargebacks, and why do they eat margin?
The line items on a Vendor remittance that nobody budgets for.
Chargebacks are compliance deductions Amazon applies to Vendor invoices for operational infractions: advance shipment notices sent late, labels that would not scan, cartons outside spec, purchase orders under-filled or delivered outside the window. Alongside them sit shortage claims, where Amazon states it received fewer units than you invoiced.
Individually they look like rounding errors. Compounded across a year of purchase orders they quietly consume points of margin, which is why finance teams often spot the problem before supply chain does.
They are also recoverable. Chargebacks group by reason code, so root-causing the top two or three codes usually eliminates most of the cost, and shortage claims can be disputed and won with disciplined evidence: proof of delivery, accurate ASNs and carton-level records kept as a habit rather than assembled in a panic.
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