Firm’s performance can not be limited to minimizing costs and increased production volumes. It now requires a continuous improvement approach, overall, resulting in deployment of all economic, environmental and social dimensions of enterprise: so this is a so-called overall performance to be considered. Financial performance is no longer sufficient to assess firm’s performance. Therefore, companies should measure their progress from a more comprehensive performance including, apart from economic dimension, environmental and social dimensions. Goal of this work is to design a module for obtaining a global composite index in order to determine integrated information on economic, environmental, social and global performance of firm in time. Normalized indicators were associated into three sustainability sub-indices and finally composed into a global indicator of firm’s global performance. A case study was used to validate this module, interpretation of results is given and the utility of our module with its relevance is pointed out.