銀行業獲利來源之探討-以台灣銀行業為例

Abstract

本文運用台灣33家銀行2006年第二季至2023年第二季的資料，探討銀行生產力與獲利能力之間的關係。本文參考Egan(2022)的研究方法，計算銀行的存款生產力、計息資產生產力以及手續費生產力，並分析這些生產力在多大程度上能夠解釋銀行的資產報酬率(ROA)。實證結果顯示，手續費生產力是台灣銀行業最重要的獲利來源，其次是計息資產生產力，而存款生產力對資產報酬率沒有顯著影響。在考慮不同類型生產力間之綜效後，這些結果依然成立。本文的結論與Egan(2022)探討美國銀行業價值來源的結論不同，這可能反映兩國銀行業間之差異。

Using the data of 33 Taiwanese banks from the second quarter of 2006 to the second quarter of 2023, this thesis studies banks’ productivities and their relations to bank profitability. Applying a methodology similar to that used in Egan(2022), it computes banks’ deposit, interest-bearing-asset, and fee productivities, and examines the degrees to which they can explain banks’ return on assets(ROA). The empirical results show that fee productivity is the most important source of profitability for Taiwan's banking industry, followed by interest-bearing-asset productivity, while deposit productivity has no significant impact on ROA. These results still hold after the synergies between different types of productivities are considered. The results in this thesis are different from those on the U.S. banking industry in Egan(2022), which may reflect the differences between the banking industries of these two countries.