Wagering calculator
Enter the bonus, the wagering and the game. You get the bets required, what clearing it should cost you on average, and how long it takes. No sign-up, nothing stored.
Marginal
Expected value close to zero
- Bonus
- $100
- Bets required
- $3,500
- Expected cost of wagering
- $140
- Expected value
- −$40
- Spins needed
- 3,500
- Time at 4.5 s per spin
- 4 h 22 min
An average over many players. Any single session can end far above or below it, and the chance of losing the whole balance before finishing is not included.
The formula
Bets required = wagering × (bonus, or deposit + bonus) ÷ game contribution
Expected cost = bets required × (1 − RTP)
Expected value = bonus − expected cost
These are long-run averages. Read our wagering guide for the rules that void winnings: maximum bet, excluded games and time limits.
Calculator questions
Why is the expected value often negative?
Because every bet placed to clear the wagering carries the house edge. Above roughly 25× wagering on a 96% slot, the expected cost usually exceeds the bonus.
Does a higher RTP game help?
Yes, as long as it contributes 100% to wagering. Many casinos exclude their highest-RTP games from bonus play for exactly that reason.
Why does game contribution matter so much?
At 10% contribution, every $1 bet clears only $0.10 of wagering, so the bets required are multiplied by ten.