Visa has made New Changes to its Fraud and Chargeback Monitoring Programs.
Effective June 1st, Visa implemented changes to the Visa Acquirer Monitoring Program (VAMP) launched in April. The information in this blog reflects the latest information available at the time the blog was published.
In April 2025, Visa launched the Visa Acquirer Monitoring Program (VAMP) which consolidated five existing fraud and dispute programs into a single acquirer program and streamlined 38 distinct remediation processes into a single process.
The goal of VAMP is to reduce fraud across the global payments ecosystem by helping improve risk controls. According to Visa, compared with previous programs, VAMP has the potential to address four times the amount of fraud globally, accounting for more than $2.5 billion of fraud losses.
VAMP brought significant changes to the way fraud and chargebacks are measured and monitored. In an effort to create a more comprehensive view of fraud and chargebacks, it replaced the Visa Dispute Monitoring Program (VDMP ) and the Visa Fraud Monitoring Program (VFMP) with a new framework.
VAMP Ratio Calculation
The VAMP ratio is a transaction count-based metric that combines fraud and non-fraud chargebacks; it only includes card not present transactions. The ratio is calculated monthly as follows:
Fraud disputes (TC40 disputes) resolved through Visa’s Compelling Evidence 3.0 and non-fraud disputes (TC15 disputes) resolved through Rapid Dispute Resolution (RDR), Verifi’s Cardholder Dispute Resolution Network service (CDRN) or Ethoca will be excluded from the VAMP ratio. However, both the original dispute and the resolution must be in the same month for the TC40 or TC15 dispute to be excluded from the VAMP ratio.
Vamp Ratio Thresholds
With the launch of VAMP, new ratio thresholds were established for merchants, and ratio thresholds were established for acquirers as well. Acquirers and merchants who exceed the thresholds will be subject to fees as follows:
Note: VAMP ratio thresholds only apply if the combined number of fraudulent (TC40) and disputed transactions (TC15) a merchant has exceeds 1,500 in a month.
Enforcement for “excessive” merchants and acquirers begins October 1, 2025 and enforcement for “above standard” acquirers begins January 1, 2026.
Enumerated Transaction Ratio
Implications for Merchants
Merchants are advised to review their chargeback and fraud management policies and controls, and they are advised to confer with their processors as the introduction of thresholds for acquirers may cause them to impose new requirements on merchants so they can remain in compliance.
If you have additional questions, contact your processor who will be able to address questions related to VAMP.
For more information about Visa’s new Visa Acquirer Monitoring Program see this VAMP introduction from VISA and this Fact Sheet from VISA.
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