How to use this betting tool
- Enter the requested values using the units shown.
- Choose any settlement option that matches your market.
- Select Calculate and review the formula, assumptions, and supporting figures.
Estimate the expected net value of a stake-refund promotion using your win probability and the realistic cash value of the refund credit.
Estimate the expected net value of a stake-refund promotion using your win probability and the realistic cash value of the refund credit.
Results are informational estimates. Confirm final grading, limits, and promotional terms with the operator.
A 100 stake at 2.50, 40% win probability and a refund worth 70% has win profit 150, loss value −30 and expected net value 42.
| Check | Meaning |
|---|---|
| Inputs | Use values from one consistent market or settled event. |
| Output | The result follows the formula and assumptions stated on this page. |
“Risk-free” is promotional language, not a guarantee. Check whether the refund is cash or bonus credit, whether stake is returned, and what wagering restrictions apply.
Keep stakes proportionate to what you can afford to lose. No calculator removes betting risk.
The calculator uses only the values displayed in its input card. Each value is validated before a result is shown.
The calculation keeps JavaScript numeric precision internally and rounds only the displayed figures to practical decimal places.
No. The stated assumptions are applied, while voids, promotions, deductions, taxes, and operator-specific rules must be checked separately.
No. It evaluates the entered numbers or settled score; it does not predict an event or provide a betting signal.
Differences can come from odds changes, currency rounding, push or void treatment, commission, bonus terms, or a different calculation convention.
| Item | Definition |
|---|---|
| Primary output | Expected net value |
| Method | EV = p × stake × (odds − 1) + (1 − p) × [−stake + stake × refund conversion rate]. |