Aldhita Triasmoro Rahardjo et al. 2026. Optimization of Effective Tax Rate Through the Interaction of Debt Policy and CSR with Managerial Ownership as a Mediator in the Metal and Mineral Industry Listed on the Indonesian Stock Exchange for the Period 2022-2024. International Journal of Economics and Management Research. 5, 2 (Jun. 2026), 140–155. DOI:https://doi.org/10.55606/ijemr.v5i2.758.