Casino Bonus Wagering Calculator
Enter a bonus's terms to see how much you must bet before you can withdraw, and how much an average player loses doing it.
The formula
- Bonus = the lower of deposit × match % and the maximum bonus.
- Wagering base = the bonus, or deposit + bonus, as the terms say.
- Total to bet = base × wagering requirement ÷ game contribution.
- Average loss = total to bet × (100% − RTP).
- Expected balance at the end = deposit + bonus − average loss.
Where to find the numbers
- Match %, maximum bonus, wagering and maximum bet: the casino’s bonus terms.
- Contribution: usually 100% for slots and 0–10% for table and live games.
- RTP: in the game’s information screen. It can differ between casinos for the same slot.
These are long-run averages. Real sessions vary: many players lose the whole balance before finishing the wagering, and a few win more. A bonus is never free money.
Gambling is entertainment, not a way to make money. Set a deposit limit before you play. If you have self-excluded in your country, an offshore casino will not honour it, so please do not use one to get around it.
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