How the calculation works
- Base amount. The bonus alone, or the deposit plus the bonus, as the terms say.
- Wagering requirement = multiplier × base amount.
- Stakes needed = wagering requirement / game contribution. If only 10% of a stake counts, you need ten times as much in stakes.
- Average cost = stakes needed × house edge. It is the amount the game keeps on average while you wager.
Worked example (hypothetical)
| Input | Value |
|---|---|
| Deposit and bonus | 200 and 200 |
| Multiplier and base | 35× on deposit + bonus |
| Game contribution | 100% |
| House edge | 4% |
Base = 400. Wagering = 400 × 35 = 14,000. Stakes needed at 100% contribution = 14,000. Average cost = 14,000 × 0.04 = 560, far above the 400 you start with, so the balance would often run out first. The 560 is the average cost of the full wagering, not an amount that could be lost from 400. See wagering requirements, explained for the full discussion.
Limits of the tool
It does not know your terms, so type them in. Maximum bets, excluded games and time limits apply on top; see max bet and time limits on bonuses. Real results vary widely around the average.
Frequently asked questions
Why is the average cost so high?
Wagering multiplies the amount staked, and every stake carries the house edge. A large multiplier means a large amount staked and so a large average cost.
Does the result tell me whether to take a bonus?
No. It gives arithmetic. Whether an offer suits you depends on how you play and what you can afford.
