Recently Nucleus Research published a ROI case study for Microsoft Visual Studio Team System at KBC Bank (Belgium). This is the top outcome of their research:

  • ROI: 89%
  • Payback period: 1.12 year

More details, such as the financial analysis, average total cost of ownership, etc, are all available in the downloadable case study.

If you understand Dutch, you can also read this interview with the KBC development team on their project that was recently published in the .NET Magazine.