從銀行內部因素、產業因素、總體經濟因素探討臺灣銀行業獲利績效

Bank-specific, Industry-specific and Macroeconomic Determinants of Bank Profitability – A Study of Taiwan’s Banking Industry

本研究目的是探討銀行內部因素、產業因素和總體經濟因素對銀行的獲利能力是否有影響，並透過傳統結構-行為-績效（SCP）假說作為實證分析方法。數據採用季資料，時間涵蓋 2008 年第一季至 2015 年第三季，實證結果並沒有證據能支持 SCP 假說。本文並探討金控體系銀行和非金控體系銀行間影響獲利能力因素的差異性。比較金控體系銀行及非金控體系銀行，實證結果發現顯著影響獲利能力的因素有所不同。例如：金控銀行的權益比率、規模大小及是否為公股銀行對 ROE 有顯著影響，但在非金控銀行並沒有顯著的影響。

This study is to investigate the bank-specific, industry-specific and macroeconomic determinants that would affect the bank's profitability, by using the traditional structure - conduct - performance (SCP) hypothesis as the empirical framework. The sample period is rom 2008 Q1 to 2015 Q3. However, no evidences support the SCP hypothesis. Moreover, this paper explores the differences in the determinants of profitability between the banks that belong to financial holding companies and the independent banks. The empirical results show that the determinants of profitability between the two types of banks are different. For example: equity ratio, size and ownership have significant impact on ROE for those banks that are held by financial holding companies, but there are no significant impacts for independent banks.