A casino bonus is a promotional offer that adds funds or free spins to your account, usually tied to a deposit. The key variable is wagering requirements — the number of times you must bet the bonus (and sometimes deposit) before withdrawing. A 100% match bonus worth 100 at 40x wagering requires 4,000 in bets before you can cash out, reducing the real expected value to roughly 5–15 depending on which games you play.
How Casino Bonuses Work
When you claim a casino bonus, the operator credits funds that are locked behind a playthrough condition. Until you complete that condition, you cannot withdraw the bonus or winnings derived from it. The wagering requirement expresses how many times you must bet: a 100 bonus with 40x wagering requires 4,000 in total bets.
Two versions exist: bonus-only wagering (40x the bonus amount) and bonus-plus-deposit wagering (40x both). The latter is much harder to clear. Always check which applies before accepting.
Most bonuses also cap your maximum stake while a bonus is active — usually 5 per spin or per bet. Exceeding this limit voids the bonus regardless of how much wagering you have completed. This is the max bet rule.
Types of Casino Bonus
Welcome Bonus (Deposit Match)
The most common bonus. The casino matches your first deposit at a percentage — typically 50%–200% up to a capped amount. A 100% match up to 200 gives you 200 in bonus funds on a 200 deposit. Wagering requirements apply to the bonus, sometimes the deposit too.
No Deposit Bonus
Free funds or spins credited without requiring a deposit. Amounts are small (5–20) and wagering requirements tend to be high (40x–60x). The no deposit bonus is low-risk for you but also low expected value. Its main use is testing the casino software with zero financial commitment.
Free Spins
Credited spins on a nominated slot, usually at a fixed stake (typically 10p–20p per spin). Winnings are credited as bonus cash subject to wagering. The maximum win from free spins is often capped at 20–100 regardless of what the spin pays. Read the free spins small print guide before assuming a high-value win is cashable.
No-Wagering / Low-Wagering Bonuses
A minority of casinos offer bonuses with 0x or 1x wagering. Winnings are treated as real cash from the moment you earn them. These are genuinely valuable — though the headline match or spin count is usually lower than wagered-bonus competitors to compensate.
Reload Bonuses
Deposit match offers for existing players, typically smaller (25%–50%) and time-limited. The same wagering and max-bet rules apply. Frequency varies: some casinos run weekly reloads, others are one-off.
Calculating Real Bonus Value
The expected value of a bonus depends on three factors: wagering requirement, game RTP, and max win cap.
Formula: EV = Bonus Amount × (RTP − 1) × Wagering Multiplier + Bonus Amount
Simplified: for a 100 bonus at 35x wagering on 96% RTP slots, you expect to lose roughly 4% × 3,500 = 140 during wagering — meaning the bonus has negative EV of 40. The bonus adds real value only when the wagering requirement is low enough that expected losses are below the bonus amount.
Break-even point for a bonus-only wager at 96% RTP: wagering requirement must be below 25x.
Use the wagering requirements calculator to run these numbers for any specific offer.
Game Weighting and Excluded Games
Not all games contribute equally to wagering requirements. Slots typically count 100%. Live blackjack and roulette are often excluded entirely (0%) or count at 10%–20%. Video poker usually counts 20%–50%. Playing excluded games while a bonus is active is a common trigger for bonus forfeiture.
Always download or read the full bonus terms to find the game contribution table. This is not always displayed prominently. The game weighting guide explains contribution rates across major game types.
The Four Main Bonus Traps
- Max bet violation — betting above the capped stake (usually 5) voids the bonus mid-session. See the max bet rule guide.
- Bonus-plus-deposit wagering — many bonuses require you to wager both the bonus and your original deposit before withdrawing. A 100 deposit + 100 bonus at 40x = 8,000 in total bets.
- Low free-spin win cap — free spins that pay 200+ are capped at 20 cashable. Check the maximum withdrawal from free spins before playing high-variance slots.
- Game restrictions during wagering — switching to a game type that counts 0% towards wagering while a bonus is active does not pause the wagering clock. Time limits continue running.
Sticky vs Non-Sticky Bonuses
A sticky bonus cannot be withdrawn — only winnings above the bonus balance can be cashed out. A non-sticky bonus converts to real cash once wagering is complete. Sticky bonuses give you a larger pot to play with but the bonus amount itself is never yours to keep. Full comparison: sticky vs non-sticky casino bonus explained.
FAQ
- What does 40x wagering requirement mean?
- You must place bets totalling 40 times the bonus amount before any winnings can be withdrawn. A 100 bonus at 40x requires 4,000 in bets. If the terms state 40x bonus + deposit, and you deposited 100, the total required is 8,000.
- Are casino bonuses worth taking?
- It depends on the wagering requirement and game RTP. A bonus with 25x or lower wagering at 96%+ RTP slots can be break-even or slightly positive EV. Most bonuses with 40x+ wagering are negative EV unless you have an unusually long winning run during the playthrough period.
- What happens if you exceed the max bet limit?
- Exceeding the max bet rule (typically 5 per bet) while a bonus is active voids the bonus. The casino will remove the bonus balance and any winnings from bets that violated the limit. This is enforced retroactively in most casinos.
- Can casinos change bonus terms after you claim?
- No. Once you claim a bonus, the terms in place at the time of claiming apply. However, casinos can modify future bonus offers at any time. Always screenshot or save bonus terms at the time of claiming.
- What is a no-wagering bonus?
- A no-wagering bonus credits you with free cash or spins where winnings are immediately cashable without any playthrough condition. These are rarer but genuinely valuable. Common at smaller licensed casinos. The bonus amounts are usually lower than wagered-bonus alternatives.
- Why do some games not count towards wagering?
- Table games like blackjack have a very low house edge (0.5%–1%), which would allow a skilled player to nearly-clear a bonus at minimal cost to the casino. By weighting these games at 0%–20%, casinos ensure that wagering is completed on higher-margin games.