The study examined the impact of federal government budget implantation on economic growth in Nigeria. The specific objectives of the study were to determine the impact of capital expenditure implementation, recurrent expenditure implementation and external debt on economic growth in Nigeria. The study adopted ex-post facto research design which enabled time series data to be obtained from the Statistical Bulletin of Central Bank of Nigeria for the period of 25years, spanning from 1999 – 2023. The study conducted unit root test using Augmented Dickey-Fuller (ADF) on both the dependent and independent variables to validate the data and ensure reliable regression results. The study also conducted descriptive statistics in order to determine the individual characteristics of the research variables. Ordinary least square (OLS) Multiple Regression Analysis was employed to estimate the impact of the components of budget implementation employed in the study on economic growth at 0.05 level of significance. The results of the regression analysis showed that both capital and recurrent expenditures exerted positive and significant impact on economic growth of Nigeria; while external debt had negative and significant impact on the growth of the Nigerian economy. The implication of these findings is that the positive impact of capital and recurrent expenditures cannot sustain the growth of the Nigerian economy without adequate fiscal discipline that would address the challenges of excess debt accumulation in Nigeria. The study recommended that government should prioritize the implementation of capital and recurrent expenditures as contained in the budget; and that every debt should be project linked.

Keywords: Federal government budget implementation, Economic growth, Capital expenditure, Recurrent expenditure, External debt.