How to use the bonus calculator
Choose the offer type. For a deposit match, enter your deposit, the match percentage, the maximum bonus, the wagering requirement (expressed as “× bonus”), the house edge of the crash game you will clear it on and the game’s contribution to wagering (100% on Roobet and Stake originals; lower or zero on some sites — check the bonus page). For rakeback, enter your expected monthly wager volume and the rakeback percentage.
What the numbers mean
Expected cost is the volume you must wager multiplied by the house edge — what the game takes from you on average while you clear. EV is the bonus minus that cost. Positive means the offer is mathematically worth taking; negative means the wagering costs more than the bonus pays. Variance is not included: on a 2x auto cashout you will bust half your rounds, and a bad streak can empty the bonus balance before the requirement is met.
Rules of thumb for crash players
- A 100% match with ≤40x wagering on a 1% edge game is almost always +EV.
- The same bonus on a 4% edge game is usually −EV once wagering passes 25x.
- Rakeback has no wagering, so its EV is simply your volume × edge × rate. At high volume it beats any match.
- Max-bet rules while a bonus is active are the most common reason for voided winnings. Read them.
