Abstract: The present invention generally relates to a method and system for performing a financial transaction in a mobile communications system. To enable diversified financial transactions between the originator and the recipient of the transaction, a first transaction message is sent to a transaction server and then processed. In response to said processing, a second and a third transaction message are generated. The second transaction message includes information required for performing the transaction in respect of thc first mobile network subscriber, and thc third transaction message includes information required for performing the transaction in respect of the recipient of the transaction. Said second transaction message is sent to a first mobile network billing centre for settling the transaction with respect to said first mobile network subscriber, and said third transaction message is sent to a system receiving the transaction for settling the transaction with respect to said recipient.