Investor retirement lifestyle planning tool

A method for providing investing services is provided. Through a first computer device user interface, a computer system receives first data from the user indicating the user's expected retirement spend in a plurality of spending categories at a first level of detail and stores the data at a data location. Through a second computer device user interface, the computer system receives identifier data indicating the user and retrieves the first data from the data location. The first data is supplemented by second data indicating the user's expected retirement spend in the plurality of spending categories at a more detailed second level of detail. A target asset level necessary for the user to fund a retirement considering expected retirement spend for the plurality of spending categories is determined considering the first and second data. The target asset level is displayed to the user.