The emerging of new financial technology business and digital transformation will make the banking sector to continuously innovate their digital products and service, process automation and compliance with government regulation. Therefore, a XYZ bank in Indonesia expect to have more IT projects in the future. However, currently there are still many IT projects that exceeding the timeline. Thus, this study aims to evaluate the critical success factor in IT project in banking industry that will hopefully increase the number of IT project success when implemented. The study began with CSF collection from previous studies and 15 CSFs were identified. These factors are group in four categories namely customer, team, organization and project. The prioritization was conducted using entropy method. The questionnaires were distributed and there were 51 respondents who filled out the complete questions. The authors also tried to asked input regarding the most importance factor for IT project implementation. The result shows that Subject Matter Expert (SME) of the project is the most importance factor on the customer category. In the project category, development environment is the most important. In the organization and team category, communication and project manager skill are the most important factor in each subsequent category.