Casino bonus wagering calculator
Enter the bonus terms to see how much betting it takes to clear them, what that betting costs on average, and — by playing the bonus through a few thousand simulated sessions — how often you'd actually get to withdraw. Bonus terms for the casinos we list are on each casino's bonus page.
Amounts are in whatever currency the bonus is in.
Playing it through
Enter a deposit or bonus to see how the session plays out.
Wagering requirements explained
What is a wagering requirement?
It's how many times you must bet a bonus (or bonus plus deposit) before winnings can be withdrawn. A €100 bonus at 35× means €3,500 of bets first.
What does D+B mean?
Deposit plus bonus. A 40× (D+B) requirement on a €100 deposit with a €100 bonus means 40 × €200 = €8,000 of bets — twice as much as 40× on the bonus alone.
What is game contribution?
The share of each bet that counts towards wagering. Slots usually count 100%; table games often count 10–20%, so clearing a bonus on them takes five to ten times more betting.
Why does the chance to finish matter more than the average?
The house edge is charged on every bet, so a large requirement usually drains the balance before it's cleared. The simulation plays the bonus spin by spin and counts the sessions that bust, which a simple multiplication can't show.
How accurate is the simulation?
It uses a stylised slot with the RTP and volatility you choose, not a real game's paytable, and ignores max-bet rules and time limits. Treat it as a comparison between offers, not a forecast of one session.
Use it on your site
Writing a bonus review? Link straight to a pre-filled calculation: set the terms above, press Copy link to this calculation and paste it into your article. For slot RTPs see our open data.
18+. Gambling is entertainment, not a way to make money — every bet carries a house edge. If it stops being fun, take a break.