Business cases built the way finance reads them
Scenario ranges instead of single-point estimates, a full assumptions ledger instead of a black-box spreadsheet — whether you're reviewing someone's case or building your own.
The problem
Most business cases that reach your desk share the same flaws. One number, no range. No downside scenario. Assumptions buried in a spreadsheet you'd have to reverse-engineer to check — and when researchers have inspected real-world spreadsheets, 94% contained errors (Panko, EuSpRIG). You end up doing the sponsor's diligence for them, or rejecting a case that might have been sound.
The spreadsheet itself is the weak link. A model built in an afternoon has no provenance: you can't tell which cells are inputs, which are assumptions, and which are wishful thinking. Interrogating it costs more time than most cases are worth.
And when it's your own initiative — a finance transformation, an automation of your own processes — you face the same problem from the other side: building a case rigorous enough to meet your own standards, without losing a week to it.
What you can quantify
Three calculators for the cases that most often cross a finance leader's desk — or start there.
- Process Automation ROI — does automating this process clear our hurdle rate once implementation, licences and upkeep are netted off?
- Churn Reduction Impact — what is a given reduction in churn worth in retained revenue, and what can we justify spending to achieve it?
- Customer Retention ROI — does a proposed retention investment return more than its cost across realistic scenarios, not just the optimistic one?
Why finance signs off
- Ranges, not point estimates. Conservative, moderate and optimistic scenarios on every case — the downside is modelled, not omitted.
- Full provenance. An itemised audit trail of every input, assumption and calculation. You interrogate the case in minutes, not hours.
- Multi-year NPV and IRR as standard. Cash flows discounted over the investment horizon — comparable across initiatives on the terms you already use.
- Sensitivity analysis. A tornado chart shows which assumptions the result actually depends on, so diligence goes straight to the load-bearing numbers.
How it works
- Enter the operational inputs. Volumes, costs, rates and the investment required — a guided flow, roughly ten minutes.
- Review the case. Scenarios, payback, NPV, IRR and the complete assumptions ledger, generated instantly.
- Standardise it. Share read-only links, export to CSV, and have sponsors submit cases in the same format — every initiative comparable, every assumption visible.
Start free
The first calculator is free forever, with unlimited re-runs — no card required. Run one initiative through it and compare the output with the last spreadsheet that crossed your desk.