本文選取六個東南亞國家(泰國、印尼、菲律賓、柬埔寨、越南、馬來西亞)中105家本土以及外資銀行的財報資料，樣本期間為2005年至2013年，唯各國之研究期間不相同，是為不平衡追蹤資料的研究模型。本文期望藉由多元迴歸分析探討兩個問題:(一) 外資銀行占比的提升(下降)對於本土銀行獲利能力的影響；(二)外資銀行之績效是否顯著優於(劣於)本土銀行。
本研究的實證結論可歸納如下：(一)外資銀行的資產占比與本土銀行的資產報酬率(ROA)與股東權益報酬率(ROE)呈顯著負相關，與淨利息收益率(NIM)則呈顯著正相關；(二)外資銀行的淨利息收益率顯著優於本土銀行，資產報酬率和股東權益報酬率皆沒有顯著的差異；(三)在研究外資銀行占比的提升(下降)對於本土銀行獲利能力的影響時，自變數採用外資銀行家數占比結果較採用外資銀行資產占比不顯著。

Using data from both country and bank level in 6 Southeast Asia Countries from 2005 to 2013, this paper examines the performance of foreign and domestic banks. The structure of data is unbalanced panel data. Our goal is to know whether the share of foreign banks impacts the performance of local banks, and whether foreign banks outperform or underperform local banks. By regression analysis, we conclude that foreign banks asset share is negatively correlated with domestic banks’ ROA and ROE, but positively correlated with domestic banks’ NIM. Furthermore, foreign banks outperform domestic banks in terms of NIM, while there is no significant difference between foreign and domestic banks in terms of ROA and ROE. We also find that when measuring the impact of foreign banks share, foreign banks asset share is more significant than foreign banks number share.

1. 李榮謙與林曉伶(2008)，「外資銀行擴大在國內版圖可能帶來的影響」，中央銀行國際金融參考資料，第57輯，第95-105頁。
2. 張元、沈中華與張佩芬(2012) ，「亞洲新興市場國家外資銀行與本國銀行的績效比較—利用配對方法調整選擇偏誤」，經濟與管理論叢 8:1，頁59-100。
3. 梁榮輝、徐中琦與廖振盛(2007)，「台灣外商銀行財務經營績效與影響因素之實證研究」，華人經濟研究，第五卷第二期，第49-70頁。
4. 隋聰與李恒(2014) ，「外資銀行進入中國與銀行業淨利差變化」，金融論壇，第221期，第30-37頁。
5. Bang, Nam Jeon, Pía María Olivero and Ji Wu(2010),”Do Foreign Banks Increase Competition? Evidence from Emerging Asian and Latin American Banking Markets,” Journal of Banking & Finance 35, 856–875.
6. Brito, D. Ricardo and Brianne Bystedt(2009),"Inflation Targeting in Emerging Economies: Panel Evidence," Journal of Development Economics 91,198–210.
7. Cetorelli , Nicola and Linda S. Goldberg(2012),”Follow the Money: Quantifying Domestic Effects of Foreign Bank Shocks in the Great Recession,” NBER Working Paper, No. 17873.
8. Chen, S. H. and C. C. Liao(2011),” Are Foreign Banks More Profitable than Domestic Banks? Home- and Host-country Effects of Banking Market Structure, Governance, and Supervision,” Journal of Banking & Finance 35(4), 819-839.
9. Claessens, Stijn and Neeltje Van Horen(2014), “Foreign Banks: Trends and Impact,” Journal of Money, Credit and Banking 46(S1), 295–326.
10.¬¬ __________,A. Demirgüc-Kunt and Harry Huizinga (2001),” How does Foreign Entry Affect the Domestic Banking Market? “ Journal of Banking and Finance 25, 891–911.
11. Clarke, R. G. George, Robert Cull, and Maria Soledad Martinez Peria(2001),”Does Foreign Bank Penetration Reduce Access to Credit in Developing Countries? Evidence from Asking Borrowers,” Working Paper, The World Bank.
12. Detragiache, Enrica and Poonam Gupta (2004),” Foreign Banks in Emerging Market Crises: Evidence from Malaysia,” Working Paper WP/04/129, IMF. Washington DC: IMF.
13. Djankov, Simeon, Caralee McLiesh, Andrei Shleifer(2005), ”Private Credit in 129 Countries,” NBER Working paper No. 11078
14. _______________, Poonam Gupta, and Thierry Tressel(2008), “Foreign Banks in Poor Countries: Theory and Evidence,” Journal of Finance 63, 2123–60.
15. Goldberg, L.(2003), ”Financial FDI and Host Countries: New and Old Lessons,” NBER Working paper No. 10441, 1-18.
16. Gormley, T.A.(2010),”The Impact of Foreign Bank Entry in Emerging Markets: Evidence from India,” Journal of Financial Intermediation 19, 26–51.
17. Havrylchyk, O. and E. Jurzyk (2011),”Profitability of Foreign and Domestic Banks in Central and Eastern Europe: Does the Mode of Entry Matter?” The Economics of Transition 19, 443–472.
18. Hermes, Niels and Robert Lensink(2004),"Foreign Bank Presence, Domestic Bank Performance and Financial Development," Journal of Emerging Market Finance vol. 3 issue 2, 207-229.
19. Hryckiewicz, Aneta and Oskar Kowalewski(2010),”Economic Determinates, Financial Crisis and Entry Modes of Foreign Banks into Emerging Markets,” Emerging Markets Review 11, 205–228.
20. Ilzetzki, Ethan, Enrique G. Mendoza and Carlos A. Vegh(2012),"How Big (Small?) Are Fiscal Multipliers?" Journal of Monetary Economics 60, 239–254.
21. Kosmidouk, Kyriaki, Fotios Pasiouras and Angelos Tsaklanganos(2006), ”Domestic and Multinational Determinants of Foreign Bank Profits: The Case of Greek Banks Operating Abroad,” Journal of Multinational Financial Management Vol. 17, 1-15.
22. Manlagñit, M. C. V. (2011),”The Economic Effects of Foreign Bank Presence: Evidence from the Philippines,” Journal of International Money and Finance 30, 1180–1194.
23. Molyneux, Philip, Linh H. Nguyen and Ru Xie(2013),”Foreign Bank Entry in South East Asia,” International Review of Financial Analysis, 30, 26–35.
24. Okuda, Hidenobu and Suvadee Rungsomboon(2004),”The Effects of Foreign Bank Entry on the Thai Banking Market: Empirical Analysis from 1990 to 2002,” CEI Working Paper Series, No. 2004-20.
25. Shen, Chung-Hua, Chin-Hwa Lu and Meng-Wen Wu(2009),"Impact of Foreign Bank Entry on the Performance of Chinese Banks," China & World Economy Vol. 17 No. 3,102 – 12.
26. Wu, Ji, C. Alina Luca and Bang Nam Jeon(2011),”Foreign Bank Penetration and the Lending Channel in Emerging Economies: Evidence from Bank-Level Panel Data,” Journal of International Money and Finance 30 ,1128–1156.
27. Xu Ying(2011),”Towards a More Accurate Measure of Foreign Bank Entry and its Impact on Domestic Banking Performance: The Case of China,” Journal of Banking & Finance 35, 886–901.