Network Interchange Fees - PIN-based ATM/POS fees paid by card issuers to ATM owners and merchant acquirers to card issuers. Signature-Based Debit Interchange Income - Merchant fees paid to card issuers based on a percentage of the sale price Network Interchange Fees - PIN-based ATM/POS fees paid by card issuers to ATM owners and merchant acquirers to card issuers. Signature-Based Debit Interchange Income - Merchant fees paid to card issuers based on a percentage of the sale price