わが国IFRS適用企業の利益に関する研究

International Financial Reporting Standards (hereinafter abbreviated as "IFRS") is an accounting document developed by The IFRS Foundation, and the number of companies applying IFRS has been increasing year by year since voluntary application began in March 2010. It has increased. The application of IFRS appears to investors as a response to globalization, and the increase in the number of companies applying IFRS will welcome the fact that the international comparability of business performance will increase. On the other hand, for applicable companies, there are differences between IFRS and Japanese GAAP such as amortization of goodwill and capitalization of development costs, and the decision on whether to apply or not will be based on the impact on corporate profits. Therefore, many previous studies have attempted to verify whether or not corporate profits have increased after the application of IFRS. Therefore, in this study as well, we will try to verify whether the application of IFRS affected corporate profits. To describe the analysis in this study more concretely, first, based on the findings discussed by Inoue [2016] that the effect of boosting net income by applying IFRS was statistically recognized. Then, we aim to expand the sample size, which is an issue left by the previous research. We will try propensity score matching methods (PSM) using the increased number of analysis targets, and clarify the causal relationship as to whether the application of IFRS increased corporate profits. The companies to be analyzed were listed on the First Section of the Tokyo Stock Exchange in 2017, and 111 companies to which IFRS was applied from a sample of 880 companies that meet various conditions were set as the treatment group. On the other hand, 769 non-applicable companies are classified as a control group. Then, PSM was able to obtain 71 pairs (142 companies) from the sample pool for the treatment group and the control group. Therefore, as a result of examining whether the application of IFRS affects the net income of a company by analyzing the 71 pairs, it is concluded that the application of IFRS does not affect the profit.