A negative relationship exists between unmanaged IT risk and financial performance of institutions of varying sizes. The purpose for this quantitative correlation study was to examine the relationship between IT risk management, institution size, and the financial performance of credit unions in Jamaica. Information Systems Audit and Control Association (ISACA) risk IT model provided the theoretical framework for the study. Audited financial statements and a web-based survey provided data for this study. One hundred and thirty employees from 13 credit unions in Jamaica participated in the study. Results of the multiple regression tests confirmed a statistically significant relationship between IT risk management, institution size, and the financial performance of Jamaican credit unions, F (2, 99) = 46.861, p = 0.000, R2 = .486. Institution size was a statistically significant predictor of financial performance (beta = -.637, p = .000). IT risk management initiatives did not provide any significant variation (beta = .139, p = .074) in financial performance. Research findings may lead to more effective and efficient operations of Jamaican credit unions and improvement in their financial performance, which could result in positive social change through the increases in corporate social contributions, the payment of dividends, and the offer of affordable product and services for over 1 million Jamaican credit union members.