<p>This research intends to investigate the dynamic impact of FinTech, Green Entrepreneurship and Population growth on Economic, Social and Environmental Sustainability (ESE) in developed nations. The CS-ARDL model is applied to uncover the linear connections, while the NARDL model is applied to detect the non-linear dynamics between the dependent and independent variables. The NARDL model also predicts the dynamics of causal associations in the light of negative and positive shocks. The outcomes show that FinTech and population growth deteriorate the climate quality and enhance social and economic sustainability. Green entrepreneurship derives ESE sustainability by reducing carbon emissions and enhancing GDP and human development. Non-linear results show that asymmetric connections are time variants, i.e., causal effects vary with negative and positive shocks. The countries under study should promote renewable energy consumption behind FinTech mining to achieve economic, social, and environmental growth. Policymakers and Governments should encourage green entrepreneurship, green ventures, and policies to promote green entrepreneurs. The outcomes help to increase social development via the favourable impact of FinTech on human development, i.e., online payments at low cost and digital literacy. Green entrepreneurship will bring innovative solutions to social challenges, i.e., renewable energy consumption, affordable education, health, and quality of life.</p>