Compare the one-time cost of moving servers to another host or to cloud with the yearly saving, and see when the move pays back.
Enter the one-time cost of migrating, any credits the new provider has confirmed in writing, and the yearly saving: what you pay now each year minus what the new setup will cost, both before GST. The tool grows the saving each year by the percentage you enter and shows when the one-time cost is recovered.
Worked example (illustrative). Moving four servers from an on-premise rack to a cloud provider costs ₹3,00,000 one-time (planning, re-configuration, a month of running both setups in parallel, data transfer and a consultant). The provider confirms ₹50,000 of migration credits, so the net cost is ₹2,50,000. The yearly saving (lower power, maintenance and hardware refresh, minus the new cloud bill) is ₹1,80,000, growing 5% a year. Year 1 saves ₹1,80,000 and year 2 ₹1,89,000, so the cost is recovered after about 1.37 years (around 16–17 months). Over three years the savings are ₹5,67,450, a net gain of ₹3,17,450.
Limits. A negative saving means the move costs more each year; that can still be right if it buys resilience you need, but the calculator will not show a payback. Include the cost of leaving the new provider later. See migration costs and exit costs.
Bill Shocks, Migration, Exit and Official Sources
What leaving a host or cloud costs: data transfer out, rebuilding managed services, notice periods and prepaid terms, plus a contract checklist.
Bill Shocks, Migration, Exit and Official Sources
One-time costs of moving servers to cloud or a new host, the parallel-run period plans miss, and an illustrative payback calculation.
