This research explores the impact of innovations in managerial accounting on sustainable cost management, focusing on the integration of green business practices. The objectives are to analyze how technological, process, strategic, and organizational innovations contribute to cost savings and sustainability performance, and to provide recommendations for practitioners and policymakers. A quantitative research design was employed, utilizing case studies from various industries. Data collection involved detailed analysis of company reports and sustainability metrics, while statistical techniques were used for data analysis. Key findings reveal that big data analytics and real-time reporting significantly enhance energy efficiency and cost savings, aligning with existing literature on the benefits of data-driven decision-making. Activity-Based Costing (ABC) and Environmental Management Accounting (EMA) improve cost allocation accuracy and environmental cost tracking, resulting in substantial cost reductions. Strategic frameworks like the Balanced Scorecard (BSC) and Life-Cycle Costing (LCC) effectively integrate sustainability goals with business objectives, promoting long-term financial and environmental benefits. Organizational practices, including cross-functional teams and strong top management commitment, are crucial for successful sustainability initiatives. The study concludes that these innovations in managerial accounting are vital for achieving sustainable cost management. Recommendations for practitioners include investing in advanced technologies, adopting strategic costing methodologies, and fostering a collaborative organizational culture. Policymakers are advised to create incentives and regulations that encourage sustainable practices. Future research should focus on the long-term impacts of these practices, industry-specific adaptations, and the socio-economic benefits of sustainable cost management. This research contributes to the growing body of knowledge on sustainable business practices and provides practical guidance for enhancing sustainability through managerial accounting innovations.