銀行集中度與台灣銀行業的獲利性及風險

The Impact of Bank Concentration on Profitability and Risk in Taiwan's Banking Industry

10.6277/ter.2008.363.2

劉景中(Jin-Chung Liu)

銀行集中度 ； 市場結構 ； 動態長期追蹤模型 ； bank concentration ； market structure ； dynamic panel data model

經濟論文叢刊

36卷3期（2008 / 09 / 01）

327 - 355

繁體中文

本文以1996-2005年台灣銀行業爲研究對象，採用系統一般化動差法之動態長期追蹤模型，來探討銀行集中度對銀行獲利性及風險的影響。主要實證結果有以下幾個：第一、資產規模愈大的銀行，銀行獲利愈高且銀行風險愈低。第二、銀行集中度愈高，銀行獲利性愈高，造成這結果的原因跟銀行的效率或市場獨佔力有關。第三、提高銀行集中度有助於銀行風險的降低，這是因爲提高銀行集中度降低銀行風險的正面效果大於其提高銀行風險的負面效果。

This paper examines the impact of bank concentration on bank profitability and bank risk using a panel data set for Taiwan's banking industry from 1996 to 2005 and applies the system generalized-method-of-moments technique developed for dynamic panels. The main results show that (i) larger banks are associated with higher bank profitability and lower bank risk, (ii) higher bank concentration enhances bank profitability because of market power or efficiency, and (iii) a more concentrated banking structure reduces bank risk. This is because the positive effects of bank concentration are greater than the negative effects.

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