K-IFRS 의무도입이 감사시장에 미치는 영향: 감사보수를 중심으로 = Research Articles : The Effect of K-IFRS Mandatory Adoption on Audit Market: Evidence on Audit Fees

다국어 초록 (Multilingual Abstract)

This study investigates the effect of mandatory International Financial Reporting Standard (IFRS) adoption on audit market in Korea. In particular, we focus on the impact on audit fees associated with external governance variables. We examine how the mandatory IFRS adoption affects audit pricing, and explore how this pricing effect varies with the degree of external corporate governance including audit quality, the number of analysts following, and foreign ownership. We hypothesize that IFRS adoption is likely to increase audit fee (H1) and this fee premium due to IFRS is associated with the degrees of external corporate governance: Big4 / Non-Big4 as a proxy for audit quality (H2), the number of analysts following as a proxy for information environment (H3), and foreign ownership as a proxy for investor sophistication (H4). To test these hypotheses, we use 2,071 firm-year observations for firms listed in the Korean Stock Exchange for the period of 2009-2012. The empirical results are summarized as follows. First, we find that, consistent with our expectation, the firms show significant increases in fees paid to their auditors after IFRS adoption. This suggests that new IFRS application tends to cause the related audit task complexity and audit risk, thus leading to audit fee increases. Second, we find that the positive relation between IFRS adoption and audit fee is more pronounced for the firms audited by Big 4 than non-Big 4 auditors. It not only confirms the extant evidence on Big 4 fee premium but also provides evidence on mandatory IFRS adoption increases Big 4 fee premium. It is documented that the fact that the application of IFRS induces various judgemental issues on accounting choice as well as the lack of implementation guidance is likely to generate consistent or comparable financial statements under IFRS. Thus, firms rely more on Big 4 auditors than non-Big 4 auditors since Big 4 auditors are perceived as providing higher audit quality in terms of higher degrees of industrial expertise or systemized global networking. This enables IFRS adopting-firms to better resolve any issues raised in the process of IFRS application, which leads to intensifying Big 4 fee premium due to IFRS adoption. Third, we find that the number of financial analysts following is not related to IFRS fee premiums. Given that financial analysts as information intermediary enhances information environment, it is predictable that IFRS fee premium is negatively associated with the number of analysts following. On the other hand, it is possible that increased analysts intensify their monitoring roles on managerial opportunism in financial reporting prepared under IFRS, thus demanding higher quality of audit services, leading to fee premium in that more financial analysts provide the roles of external monitoring mechanism. Our result, however, does not support any significant role of analyst with regards to IFRS fee premium. Finally, we also find that the audit fee premium related to IFRS adoption is significantly greater for firms with higher foreign ownership. It seems that the IFRS adoption may trigger more foreign investors in domestic capital markets since it enhances credibility and comparability on financial statements prepared in accordance with IFRS. Foreign investors as sophisticated investors likely demand higher quality of audit service in the application of new IFRS, imposing higher potential legal liability on auditors, which leads to higher audit fee premium due to IFRS. Despite the strong empirical results above, when considering inflation rate or as the change factor, we can not find consistent evidence, which would be a limitation of our study. Nonetheless, this study contributes to the literature of audit fees and IFRS effects. First, this study contributes to the study of IFRS by providing evidence that IFRS requires more auditors`` effort, thus resulting in an increase in audit fee. Our results suggest that IFRS adoption demands the higher degree of auditors`` professional judgement enough to resolve IFRS-related audit task complexity and thus increased audit risk, which results in an increase in audit fees. Second, this study contributes to the study of audit fees by providing evidence that IFRS fee premium is more strengthened by Big 4 auditors. More importantly, while prior research provides the mixed results on Big 4 auditors`` fee premium, this study confirms prior evidence of Big4 auditors`` fee premium in terms of IFRS application. Third, this study provides the first evidence that foreign ownership plays a significant role in explaining cross-sectional changes in audit fees associated with IFRS adoption. Given that higher level of foreign ownership is more likely to require increased potential legal liability of auditors associated with IFRS application, they demand higher audit quality, leading to higher audit fees related to IFRS. Overall, our study provides a meaningful implication to a variety of stakeholders including regulators, standard setters, researchers, investors, analysts, auditors, etc.

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