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Payment processors monitor below official card network limits. Understanding this difference helps you maintain account health.
Public limits from Visa, MC, Amex
Monitoring levels used by processors
Regulatory Cascade Effect: Visa holds acquirers (like Stripe) responsible for their entire portfolio. If an acquirer's portfolio-wide average exceeds 0.5%, Visa can impose enforcement fines. Acquirers then set stricter merchant limits (typically 0.7%-1.0%) to maintain buffer and avoid these penalties.
Industry Guidance: The 0.75% threshold is widely referenced as industry guidance for "excessive" dispute activity. While not official processor policy, it represents common monitoring practices across payment processors.
Timeline (Nov 2025): Visa VAMP enforcement began October 1, 2025 (1.5% threshold). The threshold drops to 0.9% on January 1, 2026, with acquirer portfolio limits tightening to 0.5% simultaneously.
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