Sitemap ICICI Merchant Services will earn a fee every time a credit cards or debit cards transaction is processed through the point of sale network. The fee is usually borne by the merchant and a large part of it goes to the card issuing bank. This is in lieu of the credit that the issuing bank extends to the cardholder until the end of the billing cycle. A smaller part of the commission goes to the bank owning the PoS terminal (acquiring bank) and smaller portion to the payment company Mastercard or Visa.