ROI Simulator

Simulate the financial return of ERP, automation and process improvement projects: ROI, payback, NPV, IRR and pessimistic, realistic and optimistic scenarios.

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Start from a template

1. Investment Initial investment implementation, consulting, licenses, infrastructure Additional recurring monthly cost SaaS licenses, support, maintenance

Gains start go-live month Months to full gain

Analysis horizon Discount rate (% p.a.)

2. Expected monthly gains

Productivity (hours saved)

People affected Hours saved / person / week Hourly cost with benefits

Less rework and fewer errors

Current monthly cost of errors/rework Expected reduction (%)

Leaner inventory

Average inventory value Expected reduction (%) Cost of capital (% p.a.)

Revenue and margin

Monthly revenue Expected increase (%) Contribution margin (%)

Avoided costs and other gains

Systems, licenses or services shut down (per month) Other monthly gains

ROI over the horizon—

Payback—

NPV—

IRR (p.a.)—

Full monthly gain—

Net result—

Cumulative cash flow

Pessimistic: gains 30% lower and investment 15% higher. Optimistic: gains 20% higher.

Scenarios

See month-by-month flow

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How the calculation works

Gains start in the go-live month and grow linearly to the full value (adoption curve).
ROI = (gains − costs) ÷ costs over the chosen horizon.
Payback is the month when the cumulative flow stops being negative.
NPV brings the monthly flow to present value at the given discount rate; IRR is the annualized rate that makes NPV zero.
Inventory gain considers the cost of capital on the reduced value (not the one-off cash release).

This is an estimate. Use conservative assumptions and validate them with the areas involved before deciding.

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