Implementing Enterprise Resource Planning (ERP) systems, the most significant IT development in recent times, affects all aspects of organizational life. While the positive impact of ERP systems on operational efficiencies is well established in the literature, the relationship between ERP systems, decision support capability and decision-making processes has been inadequately investigated in the past. Taking an interpretive case study approach, this paper analyzes the impact of ERP systems on managerial decision-making. Confirming recent studies in the USA, this study observes a positive influence on decision support capability. Though improvement in the quality of information, centralization and the consequent increase in visibility and accessibility have influenced the decision support capability of managers, factors such as information overload and inadequate reporting tools in the ERP software appear to be limiting the benefits of implementing ERP systems.