The calculation of PCI noncompliance fees can vary significantly from one business to another, depending primarily on the merchant's level, the duration of noncompliance, and the specific policies of the acquiring bank or payment processor. The fee structure is often not transparently disclosed, making it challenging to provide a one-size-fits-all answer. Generally, these fees are intended to incentivize compliance with PCI DSS standards by imposing a financial penalty on noncompliant merchants. The amount can range from nominal figures, such as $10, to more substantial penalties exceeding $5,000 monthly. Factors that could influence the calculation include the size of the business, transaction volume, previous compliance history, and the perceived risk of a data breach. The severity and duration of noncompliance play crucial roles, with longer periods of noncompliance and more severe violations incurring higher fees. It's also worth noting that these fees are in addition to any potential fines imposed for actual data breaches, which can be significantly higher.