Casino Bonuses Explained: Cashback, Rebates and Wagering Math

Wagering requirements in 30 seconds

Turnover needed = bonus × wagering requirement. Then expected cost = turnover × house edge.

If the expected cost is bigger than the bonus, the promo is worth less than nothing on average. Check whether the requirement applies to the bonus only or to bonus + deposit, since that doubles the turnover.

Cashback, rebates, VIP and birthday bonuses

• Cashback: a percentage of your net losses over a day or week, sometimes with its own small wagering requirement. Read whether it's paid as cash or as bonus credit.
• Rebate: a small percentage (often under 1%) of your turnover, paid whether you win or lose. It slightly lowers the effective house edge.
• VIP tiers: higher cashback or rebate rates as your total bets grow. Useful perks, and a reason to track your spending honestly.
• Birthday and reload bonuses: one-off credits. Same rules: find the requirement and the eligible games.

Fine print that voids winnings

• Eligible games: live casino and sports often count 0–20% toward wagering.
• Max bet while wagering: going over it can cancel the bonus and the winnings.
• Max cash-out: some free credits cap withdrawals at a fixed amount.
• Time limit: unfinished wagering usually expires in days.
• One per person: multiple accounts or shared devices can get everything confiscated.

When to say no to a bonus

Decline (or don't opt in) when you want to withdraw freely, when you play mostly excluded games, or when the requirement is above about 30×. A bonus is optional, and playing without one keeps your balance yours.

Frequently asked questions

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