Also called: Chargeback rate, Chargeback-to-transaction ratio, Dispute ratio, Chargeback threshold
What a chargeback ratio is
Your chargeback ratio measures how frequently customers dispute card payments compared with your transaction activity. Card networks use it to assess merchant risk. They count disputes, not the dollars involved, so a dispute on a small purchase weighs as much as one on a large sale.
A simple way to track your own rate is to divide chargebacks by transactions and multiply by 100. For example, 20 chargebacks among 2,000 transactions equals 1% (illustrative). Treat that as an internal snapshot, not a universal network formula.
A dispute counts against your ratio even when you win the case.
How networks calculate it
Visa and Mastercard calculate their measures separately, using their own rules. Visa’s Acquirer Monitoring Program (VAMP) uses TC40 fraud reports plus TC15 disputes, divided by settled card-not-present transactions. As of April 1, 2026, a US merchant reaches VAMP’s Excessive threshold at 1.5% with at least 1,500 combined reports and disputes in a month.
Mastercard’s Excessive Chargeback Merchant threshold is 100 or more chargebacks and a 1.5% chargeback-to-transaction ratio in a month. Its High Excessive threshold is 300 or more chargebacks and a 3.0% ratio. These are separate network tests, so one blended figure across all card brands can hide a problem.
A filed dispute still counts toward the ratio if you successfully challenge it. Winning representment can recover a transaction, but it does not erase the dispute from the count.
Same disputes, different transaction volume
| 10 disputes / 1,000 transactions | 1.0% |
|---|---|
| 10 disputes / 5,000 transactions | 0.2% |
Illustrative calculation using a simple chargebacks-divided-by-transactions formula. Network calculations differ.
Why it matters to your business
Crossing a network threshold can put your account into a monitoring program and bring added scrutiny or required corrective action. Your acquirer can also impose its own limits. Continued problems put your card acceptance at risk, which threatens sales and cash flow.
Each chargeback also reverses the sale and can leave you without the merchandise or service revenue. You pay a chargeback fee even when you contest the case, and staff time spent gathering evidence adds to the cost. A rising ratio can affect your processing terms, but the network thresholds are not a guarantee of a specific fee or penalty.
What pushes the ratio up
Low transaction volume makes each dispute count more. Ten disputes among 1,000 transactions equals 1%, while the same ten among 5,000 equals 0.2% (illustrative). A handful of new disputes can therefore move a small business closer to a threshold.
Unclear billing descriptors, missed delivery expectations, hard-to-find cancellation options, and slow support can all lead customers to dispute a payment. Track disputes by reason and sales channel so you can fix the cause, rather than focusing only on the percentage.
What you can actually change
- Track each network. Review dispute counts and transaction counts separately for Visa and Mastercard. Compare your Visa CNP activity with the VAMP formula and thresholds effective as of 2026.
- Fix repeat causes. Group disputes by reason, product, and sales channel. Make billing descriptors recognizable, clarify delivery and subscription terms, and make refunds and cancellations easy to find.
- Respond on time. Use your processor’s stated response deadline and submit evidence for disputes you can challenge. A win can recover the sale, but it does not remove the dispute from your ratio.
Frequently asked questions
How do I calculate my chargeback ratio?
For a basic internal estimate, divide chargebacks by transactions and multiply by 100. For example, 20 chargebacks across 2,000 transactions equals 1% (illustrative). Visa and Mastercard use separate network calculations, so this simple formula does not replace their monitoring rules.
Does winning a chargeback lower my ratio?
No. A filed dispute still counts toward the ratio even if you win representment. Winning can recover the transaction amount, but it does not remove the dispute from the network’s count.
What is Visa’s chargeback ratio threshold?
As of April 1, 2026, Visa’s US VAMP Excessive threshold is 1.5%, with at least 1,500 combined TC40 fraud reports and TC15 disputes in a month. VAMP divides those events by settled card-not-present transactions.
What is Mastercard’s excessive chargeback threshold?
As of 2026, Mastercard’s Excessive Chargeback Merchant threshold is 100 or more chargebacks and a 1.5% ratio in a month. Its High Excessive threshold is 300 or more chargebacks and a 3.0% ratio.