This study investigated the impact of sectoral expenditure on economic growth in Nigeria, focusing
on key sectors such as Agriculture, Education, Health, Defence, Transport and Communication
and road and Construction. Utilized secondary data from 1994 to 2023, the research employed
econometric methodologies, specifically Error Correction Model (ECM) and Vector
Autoregressive (VAR) model, to analyze the relationship between public expenditure and Gross
Domestic Product (GDP) growth. The findings revealed insignificant relationship between
sectoral expenditures and economic growth, indicating that investments in education and others
insignificant returns. The study underscores the crucial role of targeting public spending in driving
sustainable economic development in Nigeria and offers policy recommendations to optimize
expenditure across sectors. Therefore, there is need for the Nigerian government to prioritize
sectoral spending, particularly in education, health and Agriculture, to foster sustainable
economic growth. By addressing existing gaps in the literature regarding the interplay of different
sectors, this research contributes valuable insights for policymakers aimed at enhancing economic
growth through effective public expenditure strategies.