In this report an over view of Banking System has been made on AB Bank Ltd. The over view has started from the base of a Bank and its services. From account opening to clearing, here tried to make clear to the readers of this report about the general services and its practical works of a bank. KYC (Know Your Customer) is the main them of account opening department. The details information of a client is recorded in this section. This section also called information Department of a Bank. The financial statements also prepared in general division of a bank.