Abstract: The invention provides a system for predicting a transaction a customer may wish to make. In, for example, an Internet banking system, when the customer clicks to bring up an “inter-account transfer” panel, the system may recognise that usually, with a given balance in their savings and cheque accounts, and at this time of the month, at this point in the financial year, the customer will want to transfer a given amount to their cheque account. So, as well as providing a window enabling the customer to manually enter the details for an inter-account transfer, the system also provides a personalised window containing the system's anticipated transaction so that with a single-click the customer can complete the transaction.