Visa's VAMP threshold is 1.5% for most merchants (many processors enforce a stricter limit, often around 0.9%). Mastercard's is 1.0%. Once you enter a monitoring program (VAMP for Visa, the Excessive Chargeback Program for Mastercard), you're subject to monthly fines and on a clock to remediate. Processor termination follows if you don't. The time to act is before you cross the threshold, not after.
Why chargebacks happen and why most merchants don't catch them early
Chargebacks are a normal part of card processing. A small number is expected. The problem is when the rate becomes a pattern, and most merchants don't have the monitoring in place to see the trend before it becomes a threshold violation.
Common causes we see across merchants:
- Unclear billing descriptors (customers don't recognize the charge)
- Subscription or continuity billing without strong customer authorization records
- Fulfillment delays creating "item not received" disputes
- Refund policy friction that pushes customers toward chargebacks instead
- Chargebacks from stolen-card fraud that get handled like ordinary customer disputes
- Missing or insufficient evidence in dispute responses
The Cambridge approach to chargeback reduction
Ratio monitoring
We track your chargeback ratio month over month and alert you when trends are moving in the wrong direction. You shouldn't find out you're at risk from your processor; you should find out from us first.
Dispute strategy
We build the right response strategy for each dispute category. Fraud chargebacks, "item not received," "subscription not cancelled," and "not as described" each require different evidence and approaches.
Compelling Evidence 3.0
CE 3.0 is Visa's framework for shifting liability on friendly fraud disputes. When applied correctly, it can turn previously unwinnable disputes into wins. We implement CE 3.0 for merchants who qualify.
Prevention at the source
The most effective chargeback reduction happens before the dispute is filed. We review your billing descriptors, customer communication sequences, and refund processes to close the gaps that drive disputes.
Chargeback alerts
Alert services like Ethoca and Verifi notify you before a chargeback is formally filed, giving you the opportunity to issue a refund and stop the dispute before it counts against your ratio.
Remediation planning
If you're already in a monitoring program, we build the remediation plan your processor needs to see: documented root cause analysis, corrective actions, and a timeline for ratio reduction.
What Compelling Evidence 3.0 means for your disputes
CE 3.0 is a Visa dispute rule for card-not-present fraud disputes (reason code 10.4). It lets a merchant shift liability back to the card issuer by showing an established history with the cardholder. To qualify, the merchant needs at least two prior transactions on the same card that were not disputed or reported as fraud, processed by the same merchant 120 to 365 days before the dispute. At least two data elements must match across the disputed transaction and both prior transactions: customer account or login ID, shipping address, IP address, or device ID/fingerprint. One of the two matches must be the IP address or the device ID/fingerprint.
In practice, this means that for merchants with recurring billing or repeat customers, a category of previously unwinnable "friendly fraud" disputes can now be contested successfully. The catch: the evidence requirements are specific, the documentation has to be in place before the dispute occurs, and not every processor makes this straightforward to execute.
Eligibility depends on your gateway and processor capturing and keeping that data, such as the IP address and device ID, on every transaction. It also depends on how your processor submits CE 3.0 responses, because requirements and tools vary by processor. Visa allows one submission attempt per dispute, so the data has to be right the first time.
CambridgeCommerce helps merchants who qualify build the systems to capture and store CE 3.0-eligible evidence as part of normal transaction flow, so it's ready when disputes arise.
“Cambridge ALWAYS anticipated issues and advised how to solve. They greatly assisted with chargeback management and tools to maintain healthy accounts. You can't anticipate everything, but Cambridge dramatically assisted in troubleshooting many aspects of my business and preventing problems from unfolding. Cambridge has my highest and strongest recommendation.”
Michael Ehrman