本研究應用資料包絡分析法對本國銀行和金融控股公司進行效率評估，透過效率值分析、Mann-Whitney U 檢定及 Tobit 迴歸分析金融控股公司法前後本國銀行效率之實證結果顯示：(1)非金控銀行之技術效率值高於金控銀行，顯示銀行加入金控在經營上並未具有優勢。(2) 金控銀行於金控法實施後之技術效率值低於實施前，顯示出實施金控法對金控銀行提升技術效率是沒有幫助的。(3)金控法實施前，分行家數與技術效率、純技術效率皆有顯著的正向關係，但在金控法實施後則與純技術效率值呈顯著負相關；而不論金控法前後，政府持股比率皆與純技術效率值呈顯著負相關。
金融海嘯前後金融控股公司效率之實證結果顯示：(1)發生金融海嘯後，景氣甚差，市場面之技術效率值低於金融海嘯前(2)在獲利面的觀點下，認為規模較大的金控會比規模較小的金控更具規模效率，但在市場面的觀點下，投資人卻青睞規模較小的金控；以保險為經營主體的金控在獲利面效率值最高，銀行為主體的金控在純技術效率值則最低，證券為主體的金控在技術效率及規模效率最低，但其在市場面的效率值卻最高。(3)資本適足率對獲利面的所有效率值皆呈顯著正相關，但卻與市場面的規模效率值有顯著的負向關係；負債淨值比與獲利面的技術效率值、規模效率值有顯著的正向關係，但與市場面卻呈顯著負相關。

In this study, the main purpose is to explore relative efficiency of banks and financial holding companies (FHCs) in Taiwan. We use efficiency analysis, Mann-Whitney U test and Tobit regression to compare the efficiency of domestic banks before and after the Financial Holding Company Act. Empirical results show:(1) Non-Financial Holding Banks’ efficiency were higher than Financial Holding Banks, indicating that banks join the FHCs did not have an advantage. (2) Financial Holding Banks’ technical efficiency was lower than after the implementation of the Financial Holding Act, showing the implementation of the Act to enhance efficiency is not helpful. (3) Before the Act, Number of branches and efficiency had significant positive relationship, but after the Act, there were significantly negatively correlated; regardless before and after the Act, ratio of government ownership and pure technical efficiency was significantly negatively correlated.
The empirical results of FHCs’ efficiency before and after the financial crisis: (1) After the financial crisis, marketability efficiency is lower than before the financial crisis (2) In view of profitability efficiency, big FHCs were more efficient than smaller ones, but in marketability efficiency, investors favored smaller FHCs; FHCs with the main body of insurance had the highest profitability efficiency, but FHCs with the main body of securities had the lowest marketability efficiency. (3) BIS and profitability efficiency had significant positive correlation, but it had significant negative relationship with marketability efficiency; Debt/Equity Ratio and profitability efficiency had significant positive relationship, but was significantly negatively correlated with the marketability efficiency.

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