An information society under constant development enables organizations to have access to a growing supply of information. Handled in an efficient manner, information can be a valuable, competitive resource. This can be achieved by investing in a Business Intelligence system (BI system). BI system's main function is to manage large amounts of unstructured data, convert it into useful information, which in turn will be used as a basis for performance management. The purpose of this study is that, through qualitative, semi-structured, in-depth interviews, to examine the perceived benefit of using BI systems to support business governance. This benefit is analyzed using theories such as traditional, bounded and flexible-bounded rationality, cognitive bias and theories of man's ability to think intuitively and reflective. The benefits of BI systems will also be analyzed using the theories of the communication process, conflicts in decision making and DIKW pyramid describing the process data, information, knowledge, wisdom. It also analyzes the benefits of BI systems using agency theory. The results show that users of BI systems are experiencing the benefits as follow: BI systems provide increased access to information in the organization, increasing the ability to handle large amounts of information, creating more fact-based decisions, freeing up time for analysis, reducing opportunistic behavior and facilitates internal communication. This creates flexibility in the bounded rationality, a more reflective decision-making process that improves the prospects to make rational decisions. Users go higher up in DIKW pyramid. BI systems reduce the information asymmetry between principal and agent. BI systems reduce uncertainty in decision reducing the risk of conflict. Training and practice are essential for BI systems to generate benefits. Unlike previous research, this study shows that BI systems are well integrated into organizations as well as live up to expectations. A new aspect of BI systems is that they reduce the risk of opportunistic behavior.