Purpose: This study aims to analyze investor reactions to the supervisory function carried out by independent commissioners and audit committees, especially in supervising corporate tax policies taken by management.
Theoretical framework: Corporate tax policy has the risk of tax penalties in the future and risks reducing investment returns in the future, so the role of independent commissioners and audit committees should be able to supervising management so that the tax policies taken do not harm investors.
Method: 565 panel data from manufacturing companies on the Indonesia Stock Exchange 2015-2022 were analyzed with a quantitative approach and multiple linear methods using STATA.
Result: This study found that independent commissioners encourage management in tax burden minimization policies, while the audit committee is not optimal in carrying out its supervisory function over corporate tax management policies. In addition, investors react to the audit committee because it is considered capable of carrying out the supervisory function of management, while investors do not react to independent commissioners and corporate tax policies.
Research, Practical & Social implications: The results of this study encourage entities to increase the role of independent commissioners in carrying out supervisory functions such as the audit committee in order to get a positive response from investors which can increase company value for sustainability business.
Originality/value: In this study, corporate tax policy is measured by reducing the statutory tax rate with a tax compliance ratio that is rarely used in previous studies, resulting in how much corporate tax policy minimizes the tax expense.