Abstract: The present invention discloses a system and method for financial transactions. The system for financial transactions includes: a database for storing information of a mobile terminal subscriber; a subscriber service interface for interfacing a service for the subscriber through a communication network; and a service control unit for processing the financial transactions according to the message from the subscriber service interface, and transmitting a result message to the interface. In accordance with the present invention, the B to P or the P to P commerce employs various settlement methods through a portable terminal. Moreover, a virtual account is issued to the mobile terminal subscriber, and money is freely transferred between the virtual account and a real bank account. The financial transactions are executed through the portable terminal, thereby improving security and easily settling an account.