Nigeria is the sixth largest producer of oil and gas in the world, but the average Nigerian on the street is poor and there is poor infrastructure like power supply, roads, hospitals etc. This study examines the efficiency and accountability of public sector revenue and expenditure in Nigeria (1970-2014). Data on total federal government revenue and expenditure, state governments’ revenue and expenditure were collected from Statistical bulletin from the Central Bank of Nigeria from 1970-2014. The results were analysed using relevant statistical tools. The findings reveals that the level of accountability is very poor in Nigeria because the attributes of accessibility, comprehensiveness, relevance, quality, reliability and timely disclosure of financial information, social and political information about government activities are completely non available or partially available for the citizens to assess the performance of public officers mostly the political office holders. Conclusively and evidently the study has revealed that there is significant relationship between efficiency of public sector expenditure, recurrent expenditure and capital expenditure in Nigeria from 1970-2014. On the basis of these, the paper recommends among others that for accountability to be successful in the management of public funds in Nigeria there must be a reduction in the level of corruption, improving public sector accounting and auditing standards, legislators as champions of accountability and restructure the public accounts committees and the value of money must be applied in the conduct of government business.
Keywords: Accountability, Financial Reporting, Financial Resources, Management, Nigeria, Public Finance, Public Sector Accounting