<p>This study examines the relationship between economic development planning, multidimensional poverty, and income redistribution in Nigeria. Employing a simultaneous equation framework with 3SLS estimation and dynamic stochastic simulation, the study uses government budgetary allocations to economic, social, and community services as proxies for planning alongside poverty, income inequality, and social welfare measures. Findings reveal that increased government spending on economic and social services reduces poverty and promotes equitable income redistribution, while progressive taxation and fiscal decentralization enhance social welfare. The analysis reveals the critical role of access to improved drinking water in poverty alleviation and income redistribution. Also, the study spotlights the negative impact of systemic challenges, including terrorism and corruption, on socioeconomic outcomes. These results validate the need for strategic fiscal policies and efficient implementation of development plans to address poverty and inequality. Policymakers are urged to deepen fiscal decentralization and prioritize social and community development spending to achieve sustainable economic progress and improved welfare outcomes.</p>