Fraud October 7, 2026
Visa VAMP Thresholds in 2026: What the 1.5 Percent Line Means for Your Business
The Visa VAMP threshold for US merchants fell to 1.5% on April 1, 2026. See how the ratio works, what counts, and how to stay well under the line.
Topic
pmtbox Blog
Every pmtbox post on this topic, newest first.
Posts
Articles.
Fraud October 7, 2026
Card Testing: How to Spot an Attack in the First Hour and Stop It Before Your Processor Does
Learn how to spot a card testing attack in the first hour, what it costs under Visa VAMP rules, and the steps to stop it before your processor acts.
Merchant Accounts October 7, 2026
Shared Payment Account vs Dedicated Merchant Account: Why Shared Accounts Close Without Warning
A dedicated merchant account is underwritten before your first sale. Compare it with a shared Stripe, Square or PayPal account and learn when to switch.
Fraud October 7, 2026
Fraud Detection Metrics: Formulas and a Measurement Plan
Learn the six fraud detection metrics every online merchant should track, with correct formulas, an instrumentation checklist and weekly alert thresholds.
Subscribe
Get new posts by email.
Research and field notes on payments, fraud, and disputes. One email per post.