The effect of the corporate governance system on the Earnings management

Objectives: The purpose of this research is to investigate the impact of the company's management system, which is measured using the characteristics of the board of directors and the audit committee, as well as the corporate ownership structure, on the earnings management of business units. Design/methodology/approach: For this purpose, the information of 167 companies admitted to the Tehran Stock Exchange during a period of 10 years from 2013 to 2022 was evaluated using the linear regression method. Results: The results indicate that among the characteristics of the board of directors, the size of the board of directors has an inverse effect and the tenure of the CEO has a direct and significant effect on earnings management, however, the influence of the independence of the board of directors and the dual role of the CEO have not been confirmed. Also, among the characteristics of the audit committee, the expertise of the audit committee has had an inverse and significant effect on earnings management, and no relationship was observed between the size and independence of the audit committee. Finally, the results showed that among the indicators of ownership structure, only institutional ownership had a direct and significant effect on earnings management, and the effect of ownership concentration and managerial ownership was not confirmed either. Innovation: In general, the results of this study provide more support for the theoretical view that corporate governance mechanisms and the company's management system can act as an effective tool to monitor management in the financial accounting process