감사인의 산업전문성이 감사품질에 미치는 영향：산업별 영향을 중심으로

[Purpose] This study empirically analyzes the impact of auditors’ industry expertise on audit quality. Specifically, through industry－specific analyses, the study examines which industries auditors’ industry expertise positively influences audit quality. [Methodology] Using a sample of firms listed on the KSE and KOSDAQ from 2013 to 2022, I examine the impact of auditors’ industry expertise on audit quality. The dependent variable, audit quality, is measured using discretionary accruals (Kothari et al., 2005), and the independent variable is the auditor’s market share within the industry. [Findings] The empirical analysis reveals that when auditors possess industry expertise, audit quality tends to improve. In particular, industry－specific analysis indicates that, beyond the industries identified by regulatory authorities as requiring industry expertise, auditors’ industry expertise enhances audit quality in five additional industries. [Policy Implications] This study is significant as it is the first to empirically examine the impact of auditors’ industry expertise on audit quality across different industries. Through this, the study provides insights by comparing the identified industries requiring industry expertise, as announced by regulatory authorities based on consultations with listed companies and accounting firms, suggesting policy improvement.