
What Mastercard’s July 2026 Scam Merchant Monitoring Rule Means for Subscription Billing
Mastercard’s Scam Merchant Monitoring Program takes effect July 24, 2026, opening a 72-hour investigation window on four triggers, including a new 5% combined refund-plus-chargeback threshold. Subscription and SaaS billing sits closest to these thresholds, and merchants on a single acquirer face an all-or-nothing outcome if that relationship gets flagged.








