IFRS 18 도입이 보고품질에 미치는 영향

[Purpose] The adoption of K－IFRS No. 1118 (hereinafter referred to as IFRS 18) “Presentation of Financial Statements and Disclosures”, scheduled for 2027, is expected to introduce significant changes to financial reporting, particularly in the presentation of operating income within the statement of comprehensive income. This study estimates the impact of operating income defined under IFRS 18 on the quality of financial reporting compared to the traditional definition of operating income. [Methodology] This study empirically examines the informational effects of operating income under IFRS 18 compared to traditional operating income, focusing on the quality of financial reporting. We investigate the value relevance of operating income and measures accounting conservatism based on the methodology proposed by Ball and Shivakumar (2005). [Findings] There were no statistically significant differences in the value relevance of operating income or the level of accounting conservatism between the operating income defined under IFRS 18 and the operating income traditionally used in Korea. This indicates that the reporting quality provided by the operating income under IFRS 18 does not substantially differ from that of the traditional operating income. [Implications] Although there have been concerns that the inclusion of impairment losses and gains or losses on disposals of tangible and intangible assets in the operating income defined under IFRS 18 could negatively affect reporting quality, no significant differences are observed compared to the reporting quality of traditional operating income. These findings offer critical insights for standard setters, accounting practitioners, and corporate stakeholders regarding the implications of IFRS 18. Furthermore, the field of research is encouraged to undertake follow－up studies to investigate the potential positive or negative aspects of operating income information provided under IFRS 18 compared to traditional operating income.