Taiwan's Financial Restructuring Fund Statute was enacted in 2001. This study is unique in simultaneously considering Taiwan's corporate governance, bank mergers, and the financial restructuring scheme. Unlike other literature that investigates only the characteristics of corporate governance that affect the concurrent static efficiency of bank mergers, we further use the dynamic slacks-based measure to examine the persistent and intertemporal effects on the dynamic efficiency of bank mergers. The results of this study show that major shareholders of acquiring banks have greater controlling power to decide whether to merge during the financial restructuring period. A bank merger using the financial restructuring scheme has less static and dynamic efficiency in the short run but gradually increased static and dynamic efficiency in the long run. Such an observation is consistent with the hypothesis that controlling shareholders pursue long-term efficiency in a bank merger.