Power of One
A sensitivity model for small operating moves — price, volume, cost, and working-capital days.
It measures how 1% or one day changes profit and cash.
Use it to pick the highest-payoff lever before you commit the team to a bigger plan.
Your numbers stay in this browser. Export only — nothing is uploaded. Illustrative, not financial advice.
Power of One
See what 1% or one day does to profit and cash — then take the worked example workbook home.
Your numbers
Pick a business type, keep the example, or plug in your own.
Your levers
Dial each lever either way (% / days or $). Defaults start at ±1% / ±1 day — drag or type to explore.
Profit impact by lever ($)
Cash impact by lever ($)
How this is calculated
- Price / ARPU ≈ revenue × (% ÷ 100) — dial works both ways
- Volume ≈ revenue × (% ÷ 100) × CM (contribution margin) from the field, or (revenue − direct) ÷ revenue if blank
- Direct / COGS profit ≈ −(direct × (% ÷ 100)) — cost down helps profit
- Opex profit ≈ −(opex × (% ÷ 100))
- AR cash ≈ −(days × revenue ÷ 365) — fewer days frees cash
- Inventory or WIP (work in progress) cash ≈ −(days × direct ÷ 365)
- AP cash ≈ +(days × direct ÷ 365) (v1 proxy)
- $ mode — type a signed dollar move; implied % or ≈days shown from the base
Separate profit levers from cash levers. Do not treat price up as free if volume elasticity is material. Do not extend DPO (days payable outstanding) in ways that damage critical suppliers. Illustrative — not advice.
Take it with you
Get the worked example workbook in Excel — type your own numbers into it.
The Excel is the worked example workbook — type your own numbers into it. Stays on your device.