自從2001年金融控股公司法以及2000年金融機構合併法實施後，目前已經有16家金控在台灣營業。只有一家金控沒有擁有銀行子公司，因此銀行是否應該加入金控便是一個很重要的課題。我們使用資料包絡分析法來檢驗從2003間到2012年間國內銀行的效率，並且將其分成金控旗下子銀行和獨立銀行。首先，從2003年到2006年，金控旗下子銀行是比較有效率的， 這可以歸功於它們發揮了在金控下的資源。 事實上，在2005年的雙卡風暴，金控旗下子銀行也表現得比獨立銀行來的好。然而，2008年和2009年的全球金融海嘯卻嚴重傷害了金控旗下子銀行，而獨立銀行相對比較不受影響，這與金控旗下子銀行較複雜的業務結構有關。2009年以後，金控旗下子銀行的效率再也沒有超越過獨立銀行，這幾年來獨立銀行的整併汰換居功厥偉。在未來，金控旗下子銀行和獨立銀行應該要分別針對純粹技術效率和規模效率進行改善。最後，我們的結論是，以效率的角度而言，目前台灣的獨立銀行不需要加入金控體系。進行改善。最後，我們的結論是，以效率的角度而言，目前台灣的獨立銀行不需要加入金控體系。

There are already 16 financial holding companies (FHC) in Taiwan since the Bank Mergers and Acquisitions Act and Financial Holding Company Act were respectively signed into law on November 2000 and June 2001, and only one company does not own its bank now. Hence, whether a bank should join or establish the system of FHC is a problem. We adopt Data Envelopment Analysis (DEA) to examine efficiency of the data from the domestic banks in Taiwan in the period from 2003 to 2012, and further divide them into two groups- the bank under FHC and the independent bank. We find that the results depend on the distinct periods. In 2003 to 2006, the banks under FHCs were more efficient, it could be attributed to their fully exertion of the advantage of FHC. In fact, even when facing the credit card and cash card crisis in 2006, FHC suffered less than independent one. However, the financial crisis in 2008 and 2009 severely harmed the banks under FHCs while independent banks did not suffer dramatically. The condition may be attributed to the relatively complicated business of the banks under FHCs. After 2009, the banks under FHCs have never surpassed independent banks in efficiency anymore. The trend of integration and elimination of independent banks in Taiwan in these ten years contribute to the results. Furthermore, the banks under FHCs and independent banks can be more efficient if they individually improve pure technique efficiency and scale efficiency. In conclusion, in the viewpoint of efficiency, independent banks in Taiwan do not have to join or establish financial holding companies.

Allen, L. and J. Jagtiani. 2000, “The risk effects of combining banking, securities and insurance activities” Journal of Economics and Business, vol. 52: 485-497.
Barros, C. P., C. Ferreira, and J. Williams. 2007, “Analysing the determinants of performance of best and worst European banks: A mixed logit approach” Journal of Banking & Finance 31: 2189–2203
Barros, C. P. and M. R. Borges. 2010, “Measuring performance in the Portuguese banking industry with a Fourier regression model” Applied Economics Letters 18(1): 21-28
Chang, C. P. 2006, “Managing Business Attributes and Performance for Commercial Banks” The Journal of American Academy of Buesiness, Cambridge 9 (1)
Chen, Y. C., L. Sun, C. W. Peng. 2005, "Commercial banks' performance in Taiwan," The International Journal of Business Performance Management, Vol. 7, No.4: 444-463
Chiou, C. C. 2009, “Effects of financial holding company act on bank efficiency and productivity in Taiwan” Neurocomputing 72: 3490-3506
De Jonghe, O. 2010, “Back to the basics in banking? A micro-analysis of banking system stability” J. Financ. Intermed. 19: 387–417
Deville, A. 2009, “Branch banking network assessment using DEA: A benchmarking analysis—A note” Management Accounting Research 20: 252-261
Fries, S. and A. Taci. 2005, “Cost efficiency of banks in transition: Evidence from 289 banks in 15 post-communist countries” Journal of Banking & Finance 29: 55-81
Ho, C. T. 2006, “Measuring bank operations performance: an approach based on Grey Relation Analysis” Journal of the Operational Research Society 57: 337-349
Ho, C. T. and D. D. Wu. 2009, “Online banking performance evaluation using data envelopment analysis and principal component analysis” Computers &Operations Research 36:1835-1842
Kwan, S. H. 2003, “Operating performance of banks among Asian economies: An international and time series comparison” Journal of Banking & Finance 27: 471–489
Kumar, M. & C. Vincent. 2011, “Benchmarking Indian banks using DEA in post-reform period: a progressive time-weighted mean approach” The Service Industries Journal 31(14): 2455-2485
Milind, S. 2001, “X-efficiency in Australian banking: An empirical investigation” Journal of Banking & Finance 25: 613-630
Mukhergee, K. M, S. C. Ray, and S. M. Miller. 2001, “Productivity growth in large US commercial banks: The initial post- deregulation experience” Journal of Banking and Finance 25: 913-939
Obi, C. P. and Emenogu, A. 2003, “Bank holding company expansion into nonbank functions: Is the rise in systematic risk rewarded?” Managerial Finance, 29(8): 9-22.
Okelue, U. D., A. W. Uchenna, U. G. Obinne, and U. J. Nonye. 2012, “The structure of the nigerian banking sector and its impact on bank performance” Journal of Economics and Sustainable Development 3 (7)
Seçme, N. Y., A. Bayrakdarog˘lu, and C. Kahraman. 2009, “Fuzzy performance evaluation in Turkish Banking Sector using Analytic Hierarchy Process and TOPSIS” Expert Systems with Applications 36: 11699–11709
Shen, C. H. and Y. Chang. 2010, “To join or not to join? Do banks that are part of a financial holding company perform better than banks that are not?” Contemporary Economic Policy 30 (1) 113–128
Shin, V., Q. Zhang, and M. Liu. 2007, “Comparing the performance of Chinese banks: A principal component approach” China Economic Review 18: 15-34
Siriopoulos, C. and P. Tziogkidis. 2010, “How do Greek banking institutions react after significant events?—A DEA approach” Omega 38: 294–308
Staikouras, C. K. 2011, “The determinants of european bank profitability” International Business & Economics Research Journal 3 (6)
Sufian, F. and M. S. Habibullah. 2009, “Asian financial crisis and the volution of Korean banks efficiency: A DEA approach” Global Economic Review: East Asian Economies and Industries 38 (4), 335-369
Vennet, R. 2002, “Cost and profit efficiency of financial conglomerates and universal banks in Europe” Journal of Money, Credit, and Banking, Vol. 34: 254–282.
Wu, C.H. and L.K. Hu. 2009, “Strategic choice between joint ventures and mergers for vertical integration” Journal of Financial Studies, Vol. 17, No.3: 103-125
Yamori et al. 2003, “Are banks affiliated with bank holding companies more efficient than independent banks? The recent experience regarding japanese regional BHCs” Asia-Pacific Financial Markets, Vol. 10, No.4: 359-376
Zimmerman. G. C. 1996, “Factors influencing community bank performance in california” FRBSF ECONOMIC REVIEW 1
Financial Supervisory Commission R.O.C. http://www.fsc.gov.tw/ch/