AbstractThis paper was motivated by the limited understanding of the role of accounting vis a vis other information in supporting the needs of management. The paper reports the findings of a study which examined differences in the design parameters of management information systems in firms adopting different strategic priorities. Based on a sample of 49 business unit general managers, the findings indicate that the effectiveness of business units is dependent on a match between the design of the information system and the firm's strategic posture. Information systems which have the characteristics of a broad scope system were found to be more effective in firms employing a strategy of continuous product/market development and innovation (Prospectors) than in firms which were protecting a comparatively narrow and stable product‐market (Defenders). The results have important implications for management accountants involved in the design and implementation of management information systems, especially in firms adopting a more innovative strategic posture. In particular, the study sheds light on the role of accounting as part of the “mosaic” of information provided to managers for decision making.