The headline number on a casino bonus is the least useful thing about it. Operators compete on that number because it’s what gets clicked — but the terms underneath decide whether the bonus is worth taking at all.
This guide covers the three variables that actually determine bonus value: the wagering multiplier, what the multiplier applies to, and game weighting. Get those three right and you can compare any two offers in about thirty seconds.
What a wagering requirement actually is
A wagering requirement is the total amount you must bet before bonus funds convert into withdrawable cash. If you claim a $100 bonus with 35x wagering, you need to place $3,500 in total bets before you can withdraw anything derived from that bonus.
That $3,500 isn’t money you need to have. It’s turnover — the same $100 recycled through many rounds of betting. But every round is subject to the house edge, and that’s where the real cost sits.
Turnover is not loss, but turnover causes loss. At a 3% house edge, $3,500 of turnover costs roughly $105 in expected value — more than the bonus itself.
The detail most people miss: bonus vs bonus + deposit
This single distinction changes bonus value more than the multiplier does. Read the terms carefully, because operators word it differently:
- 35x bonus — you wager 35 times the bonus amount only
- 35x (bonus + deposit) — you wager 35 times the combined total
On a $100 deposit with a $100 bonus, the first means $3,500 of turnover. The second means $7,000 — double the requirement, from identical headline terms.
$100 deposit, 100% match, 35x wagering
Game weighting: where the real trap is
Not every game contributes equally toward clearing a wagering requirement. A typical weighting table looks like this:
| Game type | Contribution | $100 bet counts as |
|---|---|---|
| Slots | 100% | $100 |
| Roulette | 20% | $20 |
| Blackjack | 10% | $10 |
| Live dealer | 10% | $10 |
| Sports bets | 0% | $0 |
If you prefer blackjack, a 35x requirement effectively becomes 350x in real betting volume. The bonus isn’t for you — and no amount of headline percentage changes that.
Comparing two offers in thirty seconds
Take the offer’s effective turnover and divide by the bonus received. Lower is better.
| Offer | Turnover | Bonus | Ratio |
|---|---|---|---|
| 200% up to $200, 45x (bonus + deposit) | $13,500 | $200 | 67.5 |
| 100% up to $100, 20x (bonus only) | $2,000 | $100 | 20.0 |
The 100% offer is more than three times better per dollar of bonus, despite advertising half the headline. This is the calculation the headline number is designed to stop you doing.
Other terms worth checking
- Max bet while wagering — often $5. Exceed it once and the bonus can be voided entirely.
- Expiry window — 7 days versus 30 days changes whether the requirement is realistically clearable.
- Max cashout — some bonuses cap withdrawals at a multiple of the bonus regardless of winnings.
- Excluded games — high-RTP slots are frequently barred from bonus play.
Compare offers by wagering, not headline
Every listing shows its multiplier up front, so you can run this calculation before you deposit.
The honest bottom line
A bonus improves your position relative to playing without one, but it does not make casino games profitable. The house edge is built into every round of turnover you’re required to generate, which is precisely why wagering requirements exist.
Treat a bonus as extended playtime for your deposit — not as a route to profit. Compare offers on the ratio above, check the four terms in the previous section, and only claim bonuses on games you’d have played anyway.
Related reading: why blackjack barely clears a bonus and what RTP actually costs you.
18+. Gambling can be addictive. Please play responsibly and only with money you can afford to lose. If gambling is affecting your life, free confidential support is available on our responsible gambling page.