This study aims to analyze the effect of Environmental Costing, Sustainable Performance Measurement, and Decision Making on Sustainability Management Accounting (SMA) in manufacturing companies listed on the Indonesia Stock Exchange (IDX) during the period 2018–2022. The research method uses a quantitative approach with a descriptive and explanatory design. The sample was determined through a purposive sampling method with the criteria of companies that consistently publish annual reports, sustainability reports, and participate in the PROPER program. The data analysis technique used multiple linear regression with classical assumption tests such as normality, multicollinearity, heteroscedasticity, and autocorrelation. The results of the study indicate that simultaneously Environmental Costing, Sustainable Performance Measurement, and Decision Making have a negative and insignificant effect on Sustainability Management Accounting. Partially, the three independent variables also did not show a significant effect on SMA. This finding indicates that these sustainability elements have not been effectively integrated into the company's management accounting system. This study shows the need to increase management commitment and develop a more structured sustainability information system in order to support strategic decision making in line with sustainability principles.

The potential of the organic soap market is increasingly promising along with the increasing public awareness of the importance of products made from natural and environmentally friendly ingredients. Our organic soap UMKM still faces many challenges, including competition with similar products and lack of access to more modern production knowledge. UMKM Utopia Bodysoap is an UMKM formed by several students of the University of 17 August 1945 Surabaya which aims to provide high-quality natural skin care products to the community. Then collaborate with UMKM Soappahollic with the aim of collaboration between UMKM Soappahollic and Utopia is to increase the competitiveness and profitability of UMKM through the development of innovative and high-quality organic soap products. This collaboration process involves several stages, starting from identifying potential collaboration, knowledge exchange, new product development, product testing and evaluation, to product marketing and sales. The results of the collaboration created a new organic soap recipe that combines the advantages of each, so that UMKM Soappahollic succeeded in improving product quality, product diversification, and business profitability.  This community service program has also succeeded in increasing the sustainability of the Soappahollic UMKM business through product diversification and wider market access.