Abstract: A total cost of ownership model is input by a series of graphical user interface pages. The model may include identification of specific tasks, including sub-activities and activities. Data sets are generated by progressively inputting costs, time, labor rates, and other key information for the various activities and sub-activities. Total cost of ownership calculations are made and the data may be rapidly and interactively displayed in graphical formats, tabulated formats, flow charts, and so forth. The tool permits the evaluation of both existing and alternative or solution scenarios for equipment ownership and servicing.