Mainframe Modernization ROI Calculator
Estimate cost savings, migration investment, and break-even timeline for your mainframe modernization project.
40–60%
Average infrastructure cost reduction after cloud migration
18–24 mo
Typical break-even timeline for rehosting projects
3–5×
Long-term ROI multiple over 5-year horizon
Launch the Interactive ROI Calculator
Input your current mainframe costs, team size, and migration approach for a personalized analysis.
Open ROI Calculator →How to Calculate Mainframe Modernization ROI
ROI analysis for mainframe modernization must account for one-time migration costs, ongoing savings, opportunity costs, and risk reduction. Key inputs include: current MIPS pricing, software licensing fees, data center costs, staff overhead, and projected cloud spend.
Key Cost Drivers to Model
- Current state costs: MIPS fees, software licenses (CICS, DB2, IMS), data center, staff
- Migration investment: tooling, professional services, training, testing, parallel run period
- Future state costs: cloud IaaS/PaaS, license conversions, new hires or retraining
- Risk reduction value: compliance fines avoided, talent risk hedged, vendor lock-in reduced