Most purchase decisions are made on a feeling and defended with a number afterwards. This does it the other way round, with the assumptions written down where they can be argued with.
What's Included
- Costs and benefits over time not a single-year snapshot.
- Payback period and break-even month which is what people actually ask.
- Assumptions listed and editable because that is where the disagreement lives.
- An assistant that tests the case against a pessimistic set of numbers.
How To Use
- Separate one-off cost from running cost. They behave very differently.
- Write assumptions down. An unstated assumption is an argument waiting to happen.
- Always run a pessimistic case. If it only works at best case, it does not work.
- Revisit the calculation after six months against what really happened.
Take it into the board pack with analytics prompts, and track the spend with personal finance prompts.