Abstract
The improvement in the return on investment(ROI) of information systems is becoming more and more important for justifying the cost of information systems. Methods of evaluating ROI have been proposed, which usually extract and define quantitative indices meeting the goal of the information systems before they are developed, then measure the indices during they are in operation. This paper proposes, on the other hand, a requirement framework that defines extraction processes of ROI and the information extracted by the processes, which is applicable even when quantitative indices are not defined before information systems are developed. Application of this framework to five organizations using an information system has shown that this framework enables valid extraction of the ROI.