Stripe Radar: How to Tune Fraud Rules Without Losing Real Customers

Radar's default rules are tuned for the average Stripe business — which means they're not tuned for yours. Over-blocking legitimate customers is as costly as under-blocking fraud, just less visible on a dashboard.

Start With Your Own Data

Before writing custom rules, review your actual chargeback and false-decline history — tuning blind against generic best practices tends to overcorrect in one direction.

Treat It as Ongoing, Not One-Time

Fraud patterns shift. Rules that were correctly tuned at launch often need revisiting as your customer base and average order value change.