The shift in annual reports that are increasingly dominated by narrative information makes the report longer, the information in the annual report includes many professional terms, and special notes and also a lot of non-financial information, which makes it more complicated and difficult for investor to understand. This condition causes information from within the company not to be delivered properly to stakeholders and causes the emergence of information asymmetry and agency costs between management and stakeholders. Therefore, this study aims to determine the effect of readability based on the length of the annual report and the value relevance of the financial information contained in the annual report on agency costs. This is quantitative study with a sample consist of 263 firm-year from Kompas100 index during 2016-2019 observation period. The result of this study indicate that the higher the number of pages, the number of words and the number of characters, which reflects the poor readability of the annual report, has a negative effect on the asset turnover ratio, which is an inverse proxy for agency costs. The value relevance variable has no significant relationship to the asset turnover ratio. Furthermore, the presence of the analyst coverage variable is able to moderate the positive effect between the number of pages, words and characters in the annual report on the asset turnover ratio. However, no significant effect was found during the test between value relevance to asset turnover ratio that are moderated by
analyst coverage. It can be concluded that concise, clear and easy-to-understand information in the annual report is useful as a medium for monitoring management performance and useful in making investor decision
