The effects of the International Financial Reporting Standards (IFRS) adoption on earnings quality: evidence from Korea

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This study investigates whether earnings quality of Korean listed firms was substantially improved after the IFRS adoption in long-term aspect and which firms listed in KOSPI or KOSDAQ market had been more enjoyed the benefit. Prior studies related to this subject don’t provide consistent results and have a limitation of insufficiency of research periods. Therefore, this study analyzes the positive effect of the IFRS adoption in Korea using long-term based approach and comparative analysis on each Korean stock market. Furthermore, this study considered Korean specific institutional environment in which main financial statements prepared and disclosed by listed firms were changed from individual financial statements to consolidated financial statements after the IFRS adoption. Results of the study found that earnings quality of Korean listed firms had been significantly improved during 5 years after the IFRS adoption. In addition, earnings quality on consolidated financial statements of KOSDAQ listed firms has improved more than that of KOSPI listed firms. The results provide meaningful implications to evaluate the effects of IFRS adoption on earnings quality and to assess accomplishment of fundamental purpose of the IFRS adoption in Korea.

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    • Table 1. Descriptive statistics (n = 13,154)
    • Table 2. Pearson correlation matrix (n = 13,154)
    • Table 3. Test results of hypothesis 1
    • Table 4. Test results of hypothesis 2