Math tools
Wagering Calculator
Punch in the bonus terms; see the actual expected value
The headline number on a bonus offer rarely tells you whether the bonus is worth claiming. Wagering requirement, what the requirement applies to (bonus only, or bonus plus deposit), the RTP of the games you'll be playing, and the game contribution percentage all combine to determine the actual expected value. This calculator lets you plug in the numbers from a specific bonus offer and see the math instantly. The output isn't a precise prediction — it's expected value, which means it's what you'd see on average across many sessions. Your specific session will land above or below depending on variance.
The matched bonus, not your deposit
Your own funds, before the match
The 'Nx' figure from the bonus terms
Read the bonus terms carefully
Industry average is 96%; check the specific slot
100% for slots; usually lower for table games
Result
$-20.00
Expected value of taking this bonus
Verdict
Clearly negative
Total wagering required$3000.00
Effective wagering (after contribution)$3000.00
Expected cost to clear$120.00
Bonus headline value$100.00
Expected value = bonus amount minus expected cost. Cost = wagering × (1 − RTP) ÷ game contribution. Variance means your actual outcome will be above or below this number for any single session.