Abstract: A method in a non web-based application of a mobile device for transferring funds to a banking account comprises receiving from a server system an identifier token of the mobile device. The identifier token is persistently stored at the mobile device. When funds are to be transferred, the identifier token stored is sent at the mobile device to the server system when the non web-based application is opened in the mobile device to transfer funds to the banking account. Information identifying a balance of at least one source account is received, from the server system, and displayed, along with an editable amount of funds to be transferred to the banking account and an indication of a single action to be performed to transfer the funds to the banking account. A request for fund transfer of the editable amount is sent to the server system along with the identifier token in response to the single action being performed.