An American Express chargeback fee is a fee applied each month after the following “excessive chargeback” threshold has been met. In any three consecutive months, the monthly ratio of Chargebacks (less Chargeback Reversals) to gross Charges (less credits) at an establishment exceeds one percent. This is designated for Merchants that process American Express cards through the Opt Blue Platform.
How Much is the Excessive Chargeback fee?
$25.00 per Chargeback (less Chargeback Reversals) over the one percent ratio.