K-IFRS 도입이 감사시간에 미치는 영향: 감사인의 역량 및 비감사서비스 제공 여부에 따라

This study explores how the adoption of K-IFRS influences the audit hours depending onwhether the firms are audited by the big-size auditors(BIG4 auditors), and depending on whethernon-audit services concerning K-IFRS adoption are provided by incumbent auditors. Thecensoring period for this study rages from 2009 to 2012, thus the resulting sample data consistsof 1,688 firm by year cases. The results show that audit hours are increased after the adoption of K-IFRS. A furtheranalysis shows that the audit hours are increased less when the auditing services are provided bythe BIG4 auditors. The results suggest that BIG4 auditors are better prepared relative to theother auditors to the change of accounting standards into K-IFRS. This study provides anotherinteresting finding that the less audit hours of BIG4 auditors are not found when the non-auditservices concerning K-IFRS adoption are provided by incumbent auditors. This might result fromthe knowledge spillover effects between audit services and K-IFRS related non-audit services. With respect to practical implication, the results suggest that the transition into K-IFRS doesnot influence on the audit hours of all the firms, differentiated by the capabilities of auditors orthe provision of non-audit services.