6. Conclusion
Faced with a constant changing competition environment, Taiwanese CPA firms need to utilize an appropriate sustainability performance evaluation model to enhance their competitive advantage. Therefore, this study builds a hybrid MCDM model combining DEMATEL with ANP and modified VIKOR based on BSC, so as to evaluate the sustainability performance of Taiwanese CPA firms.
First, using the DEMATEL method, this hybrid MCDM model can indicate the directions for improvement of CPA firms’ sustainability performance, rather than just rank the performance. This sustainability performance evaluation model helps CPA firms’ decision-makers to understand the most important factors of their firms’ sustainability performance through INRM, which can provide an overall picture of the influential network among these complicated factors. Based on data from interviews with partners of Taiwanese CPA firms, the priority of influence of the four dimensions of CPA firms’ sustainability performance from the BSC perspectives is: Client (C), CPA firm’s internal processes (B), CPA firm’s learning and growth (A), and Finance (D). Specifically, this finding implies that Client Orientation may be a right strategy choice for local CPA firms in Taiwan.
Second, based on the DANP method, this hybrid MCDM model solves the problem of the interdependent relationships among the criteria of Taiwanese CPA firms’ sustainability performance. Therefore, this model provides the influential weights for these CPA firms’ sustainability performance evaluation in the real world.