A scrum approach on IT projects gives the tools to prevent the mechanisms of overproduction of features. The focus on developing top business value features in short sprints prevents budget overruns. Lost projects can be determined in 3 sprints instead of 12 months. Deploying your first implementation after a few sprint in production has a nice side effect: cash inflow. In short :for financials a scrum approach get your it project in control
On Agile Architecture, Scrum, Project Management and Change Management: Scrum for financials aka getting IT projects in control