The Influence of Investment Opportunity Set (IOS) and Return on Assets on The Quality of Earnings With Company Size as A Moderation Variable

This study aims to examine the effect of investment opportunity set and return on assets on earnings quality with company size as a moderating variable in manufacturing companies listed on the Indonesia Stock Exchange (IDX) for the 2019-2021 period. The sampling technique used was purposive sampling, based on predetermined criteria, there were 171 companies or 513 financial statement data as samples. The analytical method of this study uses multiple linear regression analysis and Moderated Regression Analysis (MRA) with SPSS Version 25. The results show that: 1) Investment Opportunity Set has no significant effect on earnings quality, 2) Return On Assets has a significant effect on earnings quality, 3) company size cannot moderate the effect of investment opportunity set on earnings quality, 4) company size can moderate the effect of return on assets on earnings quality. Future research namely being able to change the category of companies used as research samples, for example companies in the trade, service and investment sector or other companies, can conduct research with a period of more than 3 years, because the larger the number of research samples is expected to produce more accurate data, researchers can add or use other independent variables that can significantly affect earnings quality such as liquidity, leverage, profit growth, dividend policy, accounting conservatism and etc., and it is expected to be able to use other moderating variables which are thought to have more influence