<![CDATA[Companies classified in the SRI-KEHATI index are expected to show commitment to sustainable business practices, including in terms of environmental management. This study aims to examine the influence of environmental costs, environmental management systems, and carbon emission disclosure on the environmental performance of companies classified in the SRI-KEHATI index on the Indonesia Stock Exchange for the period of December 31, 2021–2023. This study uses a quantitative approach with purposive sampling techniques on 15 companies, resulting in 45 observations. Data were obtained from annual reports and sustainability reports, then analyzed using multiple linear regression with the help of SPSS software. The results of the study show that environmental costs and environmental management systems have a positive effect on the company's environmental performance. This shows that companies that allocate real funds to environmental activities and have a structured and effective environmental management system tend to show better environmental performance. Meanwhile, the disclosure of carbon emissions has no significant influence on environmental performance. This means that simply revealing information related to carbon emissions in the company's report is not enough to reflect the actual environmental performance. The implication of the results of this study is that the legitimacy of the company in the context of environmental sustainability is not only built through the disclosure of information, but also through tangible implementations such as the expenditure of environmental costs and the implementation of an effective environmental management system. These findings provide an impetus for companies to not only focus on the reporting aspect, but also strengthen internal practices that support sustainability. In addition, the results of this study are expected to be a reference for stakeholders in assessing the company's environmental commitment in a more comprehensive and objective manner.]]>
