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ROI Calculator

An Estimate With Every Assumption Showing

Most ERP calculators are designed to produce a large number. This one shows you exactly what it is multiplying, so you can argue with it. Change any input and the working updates. If the payback looks too good, one of your inputs is probably optimistic.

50+ ERP and software projects. Zero failed projects since 2021.

Check These Numbers With Us → Cost Worksheet
Your inputs
Only the people whose work the system would actually change.
Re-keying between systems, chasing information, rebuilding reports.
Salary plus overheads, in your own currency. The output uses the same unit.
Be conservative. No system removes all of it, and 55 to 65 percent is a realistic band.
Credit notes, short shipments, duplicate payments, wrong pricing.
Implementation, migration and training combined.
Hosting, support contract and any licence fees.
Nothing is saved during the project itself. This delays the benefit, as it should.
Estimated position
Payback period
18 months
Including the ramp-up period
Time recovered per week40 hrs
Annual value of that time51,480
Annual rework avoided9,900
Gross annual benefit61,380
Less running cost52,380
Three-year net position100,190
Rework recovery is assumed at two thirds of the figure you entered, because no system eliminates all of it. All values use whatever currency you entered the hourly cost in.
How to Read It

What this calculation does and does not do

⏱

It counts time, not growth

Only recovered hours and avoided rework. Revenue growth is excluded because it cannot be honestly attributed.

📉

It discounts your inputs

Rework recovery is cut to two thirds automatically, and the recovery share defaults below what vendors claim.

🕐

It delays the benefit

Nothing is saved during the project, so the ramp-up period pushes the payback out rather than being ignored.

💰

It subtracts running cost

Hosting, support and licences come off every year, not just year one.

⚠

It excludes your own time

Your team will spend real hours on the project. Add that to the project cost if you want a stricter number.

🔍

It is an estimate

A planning aid to structure a conversation, not a forecast. The inputs are yours, so the output is only as good as they are.

Pressure Test These Numbers

Book a free consultation. Bring the inputs you used and we will tell you which ones look optimistic for a business like yours, and what a realistic range would be.

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No commitment. An honest read on your own assumptions.