The present study tends to evaluate information technology governance based on COBIT framework in the electronic banking system to increase productivity of banks in an empirical study. This study is an exploratory mixed research. In the qualitative section, the theoretical foundations and related models are reviewed in order to identify the components of IT governance based on COBIT framework and productivity in the electronic banking system. In the quantitative section, 258 people were randomly selected as sample. Cronbach's alpha for IT governance and productivity was 79.7% and 82.3%, respectively, which indicates the reliability of this questionnaire. Qualitative results indicate that COBIT based IT governance includes four parameters (IT planning and organization, IT acquisition and implementation, IT delivery and support and IT monitoring and evaluation) and productivity includes four parameters (effectiveness, efficiency, improved performance and customer satisfaction). Quantitative results showed that the effect of COBIT based IT governance is positive on increased productivity (0.45). Moreover, the findings showed that the effect of COBIT based IT governance is significant on improved performance, efficiency and effectiveness (P < 0.01). According to the results, IT governance based on COBIT framework in the electronic banking system leads to increased productivity, efficiency, effectiveness and improved performance. Therefore, it can be concluded that deploying COBIT framework IT governance leads to a competitive advantage for electronic banking system.