Abstract: A data processing system, such as a computer system, for administering at least one individual account, at least one redistribution account and a risk taker account, each redistribution account being linked to an individual account and to the risk taker account, said accounts being preferably represented in the computer system as one or more account databases, and said administering being controlled by events, preferably being stored in and retrieved from an event database storing instances of events; said events effecting money transfers between the accounts preferably by entering and/or altering records in the account databases, said system comprising an event catalogue, preferably in the form of a database, storing transaction rules for money transfer between said accounts; to each event being assigned, if existing, a specific transaction rule for the case that event occur real time and a specific rule for the case the event occur at the end of a considered time window; processor means for retrieving from