This research work sought to evaluate the Impact of Internal Audit and Accountability on government ministries and extra ministerial department using the office of the Auditor - General  of Enugu State of Nigeria as a case study.  Pursuant to this, the researcher employed a population size of 54 staffers of the office of the Auditor-General out of which 36 were randomly selected as the population sample.  The researcher also employed percentage frequency, tabular as well as the chi-square statistical tools in the analysis of the data collected.  The researcher’s findings show that basically that without adequate internal auditing and accountability in most government ministries and government Parastalls, the public service will grind to a halt.  The researcher thus, recommends that owing to the importance of audits and accountability in all area of any establishment, the function of the internal audit departments in government offices should be enhanced to enable it performance maximally and more creditably to overall wellbeing of the various government ministries and establishments.