Daily Compliance Brief — Global Regulators Increase Focus on Governance of AML Threshold Tuning and Scenario Calibration

May 28, 2026

Signal

Regulators across multiple jurisdictions are increasing scrutiny on the governance of AML threshold tuning and scenario calibration processes, particularly whether monitoring controls remain aligned with evolving customer behavior, transaction activity, and emerging financial crime typologies.

Recent supervisory observations highlight infrequent tuning reviews, weak documentation of calibration decisions, and insufficient validation of threshold changes, creating concern that monitoring environments may generate excessive false positives while failing to identify higher-risk activity effectively.

This reflects broader expectations that institutions maintain dynamic and risk-based calibration frameworks capable of evidencing that monitoring scenarios, thresholds, and detection logic remain operationally effective and proportionate to changing financial crime exposure.

Why it matters

Financial institutions should reassess governance frameworks surrounding threshold tuning, scenario optimization, and monitoring rule adjustments across AML control environments.

Monitoring systems may require enhancement to ensure calibration decisions are independently reviewed, risk-based, and supported by documented testing capable of identifying detection gaps or unintended reductions in monitoring coverage.

Compliance teams should also strengthen governance, reporting, and oversight mechanisms to ensure scenario changes, tuning outcomes, and residual monitoring risks are appropriately escalated and evidenced in line with regulatory expectations.