It may be interest or handling fees.

When this happens to a credit card, the annual fee is deducted because the number of credit card swipes is not reached as required. Therefore, the accounting center should transfer the fee payable. You can check it at the bank counter to find out.

Accounting is also a clearing center, which mainly refers to the settlement of various currency exchange rates in banking transactions and currency exchange transactions, and a clearing of various merchants paying funds to merchant accounts through terminals wait. Including credit cards, inter-bank business fees, etc., in a sense, it plays an intermediary role. There are many types of clearing centers. In addition to banking services, there are many other businesses.