What is this sales commission calculator?
A free, browser-based calculator that turns a deal value and a commission scheme into the commission earned, an effective (blended) rate, and a per-tier breakdown. It supports a flat percentage as well as tiered (marginal / 段階式) brackets with an optional accelerator above a target. Everything runs locally in your browser, so your numbers are never uploaded.
How the math works
- Flat: commission = deal value × rate.
- Tiered (marginal): each bracket's rate applies only to the portion of the deal value inside that bracket — like progressive income tax — and the parts are summed.
- Accelerator: deal value above the target is charged at the accelerator rate instead of the tier rate.
- Effective rate = total commission ÷ deal value — your blended cost of sales.
How to use it
- Enter the deal value on the left.
- Choose a flat rate, or switch to tiered and edit the bracket rows (lower bound + rate).
- Optionally enable an accelerator to reward deal value above a target.
- Read the total, effective rate, and the per-tier breakdown on the right.
Common use cases
- Reps checking their payout for a deal before closing.
- Sales managers designing a tiered plan and sanity-checking the effective rate.
- Modeling how an accelerator changes overachievement payouts.