Casino Bonus Calculator
Enter the bonus, wagering multiplier, and slot RTP. The calculator gives you the real EV so you know if the bonus is worth the variance.
Resultados
Expected value
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Qualifying loss
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Rollover loss
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What is casino bonus EV?
Expected value measures the average profit you would make by running the bonus infinitely many times. Positive EV means you will profit in the long run — even if individual sessions can lose.
Which RTP to use?
Use the slot with the highest RTP allowed by the bonus T&C. The RTP is in the game's info button. Slots like Book of Dead or Mega Joker have RTPs of 97-99%.
When should you take the bonus?
Only when EV exceeds €3 over capital at risk, the allowed RTP is above 95%, and wagering is below ×30. Outside those ranges the variance outweighs the expected gain.
Bonus catalogue
The best casino bonuses, pre-calculated.
ZeroAzar's catalogue shows EV for every promo. Filter by positive EV and only play the ones that are worth it.
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