The use of effective internal control systems (ICS) is deemed crucial in the management of business resources. Internal control systems have been so significant to public organization especially in the aspect of assurance of the reliability and accuracy of the financial reports. For performing the internal audit function, the management may set up a separable internal audit department or it may engage professional accountants to perform internal audit. The study used descriptive research with a target population comprised of the 187 public organizations in Kenya. Simple random sampling method was used to sample 56 per cent respondents in the selected corporations. The study used a questionnaire to collect data from the respondents and secondary data was collected from published material, annual reports, and published data. Data collected was analyzed by the use of descriptive statistics which includes percentages, means, standard deviations and frequencies. To quantify the strength of the relationship between the variables, the researcher conducted a regression analysis and found that risk controlaffect the financial performance of state corporations to a great extent. In addition, identification of operational issues and internal processes affect the financial performance of state corporations to moderate extentswhile risk control contributes immensely to the financial performance of the state corporations in Kenya. The study recommends that the management of state corporations and other public institutions should develop a risk control mechanisms and incorporate relevant feedback from the various stakeholders into their internal control system.