This research is motivated by the fluctuations in profitability of PT Bumi Serpong Damai Tbk as well as changes in capital structure and asset efficiency during the period 2014–2025. This study aims to analyze the effect of Capital Structure proxied by Debt to Equity Ratio (DER) and Asset Efficiency proxied by Total Asset Turnover (TATO) on Profitability proxied by Return on Equity (ROE). The study uses a causal associative method with a quantitative approach. The population and sample are in the form of financial statements of PT Bumi Serpong Damai Tbk for the period 2014–2025. Data were obtained through documentation and analyzed using multiple linear regression, t-test, F-test, and coefficient of determination with SPSS 25. The results showed that DER had no effect on ROE, while TATO had an effect on ROE. Simultaneously, DER and TATO had an effect on ROE with an Adjusted R Square of 59.5%. In conclusion, asset efficiency is a factor that influences profitability, while capital structure has not partially shown an effect on company profitability.
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