The growing emphasis on sustainable business practices has increased the relevance of Environmental, Social, and Governance (ESG) factors in evaluating corporate performance. This study examines the impact of ESG practices on the financial performance of firms operating in Thoothukudi District. The primary objective is to analyse how environmental responsibility, social commitment, and governance standards influence key financial indicators of business organizations. The research adopts an empirical approach using primary and secondary data collected from selected companies across manufacturing and service sectors in the district. The findings indicate a significant positive association between effective ESG implementation and improved financial performance. Firms demonstrating strong governance practices and active social responsibility initiatives show comparatively higher profitability and market stability. Environmental practices, though requiring initial investment, contribute to long-term financial sustainability and risk reduction.

The study highlights that ESG integration is not merely a compliance requirement but a strategic driver of financial success at the regional level. The results provide useful insights for business managers, investors, and policymakers in promoting sustainable and financially sound business practices in emerging industrial regions like Thoothukudi District....