What is the cost of PCI non-compliance?

Card networks can fine acquiring banks $5,000-$100,000 per month for non-compliant merchants, and those fines get passed to you. If a breach occurs during non-compliance, you're liable for fraud losses, forensic investigation costs, and card reissuance fees — potentially millions. Most processors also charge a monthly non-compliance fee of $20-$50 until you certify.