關鍵查核事項對金融業盈餘管理之價值攸關性

本文旨在探討銀行業被出具關鍵查核事項與其進行盈餘管理間之價值攸關性影響，台灣自2016年起採用新式查核報告，故以2016年至2020年之金融業為研究對象。實證結果發現金融業之裁決性壞帳與衍生性金融商品間存在替代關係，在被出具與應收款項減損相關之關鍵查核事項時，較不受到裁決性壞帳與衍生性金融商品影響，然而在被出具與金融工具評價相關之關鍵查核事項時，發現會顯著負向影響衍生性金融商品之使用。再者，金融業在被出具與應收款項減損相關及與衍生性金融商品相關之關鍵查核事項時，會有負向之價值攸關性，但僅與應收款項減損相關之關鍵查核事項達顯著，其中裁決性壞帳部分，在出具不同關鍵查核事項時對價值攸關性影響有截然不同之結果，呈負向顯著與正向不顯著之價值攸關性，顯示盈餘管理工具在不同關鍵查核事項下存在不同之價值攸關性判斷。希冀透過本文結果，增加金融業在關鍵查核事項的影響發現，也提供未來相關研究不同之思考方向。

關鍵字

裁決性壞帳；衍生性金融商品；關鍵查核事項；價值攸關性

並列摘要

The objective of this study was to examine the influence of key audit matters and earnings management on value relevance in the financial industry. Extended audit reports were adopted in Taiwan in 2016, so we examined the financial industry from 2016 to 2020. The empirical results revealed a tradeoff relationship between abnormal loan loss provisions and derivatives in the financial industry. In financial firms where key audit matters related to the impairment of accounts receivable were reported, this relationship was less affected by abnormal loan loss provisions and derivatives. However, in financial firms where key audit matters related to the valuation of financial instruments were reported, we found a significantly negative impact on the use of derivatives. Furthermore, we observed negative value relevance in financial firms where key audit matters related to accounts receivable impairment and derivatives were reported. However, the negative value relevance was only significantly correlated with key auditor matters related to accounts receivable impairment. In the abnormal loan loss provisions portion, the influence of different key audit matters on value relevance varied, with some resulting in value relevance that was negative and significant as well as value relevance that was positive but not significant, thereby indicating that the value relevance resulting from different earnings management tools varies with the type of key audit matter. It is hoped that the results of this study can enrich findings regarding the influence of key audit matters in the financial industry and provide new directions of thinking for future research.