VAMP - Visa Acquirer Monitoring Program Explained
· By PayLegit · Compliance
How to manage chargeback ratios, prevent fraud rate violations, and stay compliant with Visa's acquirer-level monitoring requirements.
The Visa Acquirer Monitoring Program (VAMP) holds acquirers directly accountable for the fraud and chargeback performance of their merchant portfolios. When an acquirer's aggregate chargeback ratio exceeds 1% or their fraud rate surpasses 0.9%, VAMP triggers escalating penalties that can range from financial assessments to restrictions on onboarding new merchants.
Understanding VAMP requires recognizing that it operates at the portfolio level, not the individual merchant level. This means that a small number of high-chargeback merchants can drag an entire portfolio into VAMP violation territory, affecting the acquirer's ability to process transactions for all merchants.
Proactive monitoring involves identifying merchants trending toward excessive chargeback rates before they trigger portfolio-level thresholds. This requires real-time visibility into transaction patterns, dispute trends, and fraud indicators — capabilities that manual processes cannot deliver at scale.
PayLegit's continuous monitoring approach provides early warning signals when individual merchants show chargeback velocity increases, enabling intervention before they impact portfolio-level metrics. By combining payment pattern analysis with content compliance monitoring, PayLegit helps acquirers maintain healthy VAMP ratios while continuing to onboard and serve legitimate merchants.