This study analyzes the effect of environmental cost, carbon emission disclosure, and sustainability reporting on financial performance proxied by Return on Assets (ROA) in consumer non-primary sector companies listed on the Indonesia Stock Exchange for the 2020–2024 period. The research population includes all consumer non-primary sector companies on the IDX, with a sample of 18 companies selected through purposive sampling technique, yielding 90 observation data (balanced panel). Data analysis employs panel data regression using E-Views 13 software, encompassing Common Effect, Fixed Effect, and Random Effect model estimation selected through the Chow Test, Hausman Test, and Lagrange Multiplier Test. The results indicate that: (1) environmental cost has a significant negative effect on ROA; (2) carbon emission disclosure has a significant positive effect on ROA; and (3) sustainability reporting has a significant positive effect on ROA. Simultaneously, the three independent variables significantly affect financial performance with a coefficient of determination (adjusted R²) of 0.6572 or 65.72%. These findings imply the importance of integrating environmental cost information and sustainability reporting into management accounting systems to support corporate strategic decision-making.
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