This paper investigates the role of fiscal federalism in driving ecological transition, a key challenge in the United Nations’ Sustainable Development Goals agenda. The ecological transition seeks a sustainable society that prioritises natural resource preservation and reduces environmental impacts. The study investigates the link between fiscal federalism institutions and ecological transition policies, focusing on regional and local governments’ role in implementing environmental goals. Despite subnational governments’ commitment to green objectives, comprehensive plan implementation has been limited due to local governments’ incentive schemes and capacity constraints. The paper examines the potential of fiscal federalism institutions, such as fiscal rules, transfers and capacity-building programs, to support ecological transition policies. The research emphasises engaging regional and local governments in the green agenda and highlights the need for tailored approaches in multi-level fiscal governance to effectively achieve environmental goals. By investigating fiscal federalism’s potential contribution to ecological transition, the paper offers valuable insights for policymakers addressing environmental challenges through a multi-level governance approach.