Casino Bonus EV Calculator
Calculate the true expected value of any casino bonus. See if the wagering requirement makes it mathematically worth claiming.
Enter Bonus Details
Slots 96%: 25x — Blackjack 99%: 100x
Formula: Max Wagering < 1 / (1 - RTP)
You will likely lose more than you gain.
EV = Bonus - (Bonus × Wagering × (1 - RTP))With a 100% bonus, 40× wagering, and 96% RTP:
EV = 100 - (100 × 40 × 0.04) = 100 - 160 = -$60
Understanding Bonus EV
Every casino bonus has hidden math. Here's what determines if it's worth your money.
What is Expected Value (EV)?
Expected Value is the average amount you can expect to win or lose on a bonus if you play it many times. A positive EV (+$20) means the bonus is mathematically profitable over time. A negative EV (-$60) means the casino has the edge.
Why Wagering Matters
Wagering requirements multiply the bonus amount by a factor (e.g. 40×). The higher the wagering, the more you expose to the house edge. A small wagering requirement can turn a losing bonus into a profitable one.
Game RTP Makes a Huge Difference
Slots typically have 94-96% RTP. Blackjack with basic strategy can be 99%+. The higher the RTP, the less the house edge, and the more valuable the bonus becomes.
The Break-Even Point
A bonus is +EV when: Wagering < 1 / (1 - RTP)
For slots (96%): wagering must be under 25× to be profitable.
For blackjack (99%): wagering can be up to 100× and still be +EV.
Common Game RTPs
| Game | Typical RTP | Max Wagering for +EV |
|---|---|---|
| Blackjack (basic strategy) | 99.0% - 99.5% | Up to 100x - 200x |
| Video Poker (full pay) | 99.5% | Up to 200x |
| European Roulette | 97.3% | ~35x |
| Baccarat (Banker bet) | 98.9% | ~90x |
| High RTP Slots | 97.0% - 98.0% | ~33x - 50x |
| Average Slots | 94.0% - 96.0% | ~16x - 25x |
| Low RTP Slots | 90.0% - 94.0% | ~10x or less |
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