I don’t believe there is any one ROI typically expected in any BI rollout. The overall cost will include software/licensing costs, deployment (likely involving vendor assistance) end user training and ongoing maintenance. Once you have all that figured in, you still need to analyze how well the tool is being adopted into your workflows before you can really evaluate your ROI.
Added by Jaideep
Obviously like any other investment, ROI of a BI is quite possible. You know operational and capital expenses but this is one side. Why did you deploy BI is important to understand. It must decrease time to release management reports and dashboard. In return, decision making must be fast. A time must come when critical information is available in real-time.