This document outlines a 10-step process for conducting a return on investment (ROI) study to evaluate the benefits of a geographic information system (GIS) implementation. The steps include: 1) preparing for the ROI project; 2) identifying business opportunities through executive interviews; 3) prioritizing benefits; 4) constructing the GIS program; 5) defining project controls; 6) calculating costs; 7) quantifying benefits; 8) building a benefits roadmap; 9) calculating financial metrics like ROI, NPV, and IRR; and 10) drafting and delivering a final report. The goal is to link GIS opportunities to organizational objectives and quantify both the costs and tangible benefits to evaluate whether the program will create or destroy