Cost for Being Non compliant Being noncompliant is not an option and every large merchant is required to be PCI Compliant otherwise they will be imposed with huge monthly fines. A merchant being noncompliant has to pay additional interchange cost which will result in higher processing cost. The card brands are most likely to charge fines when a merchant is noncompliant at the time of data breach.
Also, the discovery and face remediation costs can be huge than the fines itself. The cost of data security break can be anywhere from $90 to $305 per customer data breached. Some merchants find PCI DSS requirements quite annoying and get frustrated about it; while some consider it as basic security requirements and think that it should be in place.