The article investigates how the development of the financial sector affects economic growth in Nigeria from 1982 to 2015. The researchers analyzed various factors like government spending and capital formation to see their impact on the country's economy. They found that government spending and capital formation have a significant influence on economic growth in Nigeria during the period studied. Additionally, there is a two-way relationship between financial sector development and economic growth in Nigeria. The study suggests that directing funds to the private sector and giving the Central Bank of Nigeria more control over monetary policy tools could help improve the country's economic growth.