This study investigated if and how financial sustainability affects the ability of local governments to meet the 17 Sustainable Development Goals (SDGs) established by the United Nations. Two samples consisting of Italian and Spanish local governments were analyzed for the analysis. These municipalities were selected, as they provide many essential services largely linked with several SDGs. Findings show that local governments with better financial conditions devote more effort to achieving the SDGs connected with the biosphere, as well as social and economic development. Our results can stimulate politicians and managers to fight against tax evasion to increase their resources.