Visa VAMP 2026: What Every Merchant Needs to Know

What Is VAMP and Why Visa Created It

VAMP — Visa Acquirer Monitoring Program — is Visa's merchant performance monitoring program that came into effect in 2025. It replaces two previous programs: VDMP (which monitored total dispute rates) and VCMP (which monitored fraud specifically). By combining fraud and total disputes into one metric, VAMP simplifies monitoring but also increases pressure on merchants to manage both fraud and dispute rates simultaneously.

The motivation behind VAMP is Visa's broader effort to reduce losses for issuers and cardholders, improve transaction quality across the network, and create clearer accountability for merchants and acquirers who generate excessive disputes and fraud. VAMP makes acquiring banks directly accountable for their merchants' performance, which creates stronger incentives for acquirers to enforce compliance with merchants.

For merchants, VAMP means that being in a high-dispute or high-fraud category without active management creates existential risk to your merchant account. Acquirers who cannot bring merchants into compliance face fines themselves — giving them strong motivation to terminate high-VAMP merchants.

VAMP Thresholds and Program Tiers

VAMP measures the ratio of fraud plus disputes to total transactions in a calendar month. The specific thresholds are: the VAMP Merchant Threshold (VMT) identifies merchants with concerning rates, and the Excessive Merchant Threshold (EMT) identifies merchants at critical risk.

For most merchant categories, the VMT is a fraud plus dispute ratio of 0.9% of total transactions. The EMT is 1.8%. Merchants above 0.9% receive notification and are expected to take corrective action. Merchants above 1.8% face more serious consequences.

There are separate thresholds for "enumeration attacks" — automated card testing attacks where criminals test large numbers of stolen card numbers. If your authorization decline rate from potential card testing is elevated, this can also contribute to VAMP metrics.

VAMP metrics are calculated per-acquirer across all of a merchant's processing relationships with that acquirer. Merchants who process with multiple acquirers should understand that VAMP performance is evaluated separately for each processing relationship.

Consequences of VAMP Program Enrollment

Being placed in the VAMP program (exceeding VMT threshold) triggers a formal process with your acquiring bank. Your acquirer receives notification from Visa and is required to work with you on a remediation plan. If your metrics do not improve, the consequences escalate.

At the VMT level: your acquirer contacts you to discuss your dispute and fraud rates. You will likely be required to submit an action plan documenting how you will reduce your metrics. Fines may be assessed to the acquirer (who passes them to you) for each month you remain in the program.

At the EMT level: consequences are more severe. Higher fines, possible processing restrictions, and increased scrutiny of your account. Acquirers who cannot remediate EMT merchants may terminate the merchant relationship to avoid continued fines.

Placement on MATCH/TMF (Mastercard Alert to Control High-Risk Merchants / Terminated Merchant File): if your merchant account is terminated due to excessive chargebacks, you may be listed on the MATCH/TMF list, which makes it extremely difficult to obtain a new merchant account. This is the most severe consequence.

How to Stay Below VAMP Thresholds

Staying below VAMP thresholds requires a combination of fraud prevention and dispute management practices working together.

Fraud prevention: implement 3D Secure authentication, use your processor's fraud screening tools, set velocity limits, and monitor for fraud patterns (card testing, account takeover). Fraud transactions that result in chargebacks count toward VAMP metrics even when you're the victim.

Dispute management: contest chargebacks systematically to win them. Under VAMP, the calculation is based on the volume of disputes filed, not just those you lose. However, winning disputes contributes to lower net dispute rates over time by: deterring friendly fraud from repeat offenders (who learn their claims are investigated), improving processes (when patterns are identified), and demonstrating compliance to your acquirer.

Root cause analysis: track your dispute reasons. If 40% of your disputes come from "subscription canceled" claims, fix the subscription cancellation process. If fraud disputes are rising, improve your fraud screening. VAMP compliance is ultimately about addressing root causes, not just responding to chargebacks after they arrive.

Monitor your metrics monthly: don't wait for your acquirer to tell you there's a problem. Track your own dispute and fraud rates monthly, by processor and overall. This early warning gives you time to act before breaching thresholds.

Working With Your Acquirer on VAMP Compliance

Your acquiring bank is your primary partner in VAMP compliance. They receive your VAMP metrics from Visa and are responsible for your compliance. Building a productive working relationship with your acquirer's risk team is valuable.

Be proactive: share your dispute management plans with your acquirer before you're asked. Acquirers who can see that merchants are taking dispute management seriously are more patient and supportive.

Request detailed reporting: ask your acquirer for monthly VAMP metric reports that show your performance by merchant descriptor, product category, or other dimensions. Understanding where disputes concentrate helps you target prevention efforts.

Involve your acquirer in strategy decisions: if you're considering adding a high-risk product line or launching in a new geography with higher dispute rates, discuss the VAMP implications with your acquirer first.

Consider professional dispute management: merchants who engage professional dispute management services like ChargeMate often see measurable improvements in win rates and dispute rates within 60–90 days. This measurable improvement is valuable both for VAMP compliance and for the overall quality of your acquirer relationship.