Every bonus has a price tag. It's just not written in euros. That's the whole game - and once you can do this maths in five seconds, you'll never fall for a headline number again.
The formula you actually need
Wagering requirement × bonus amount = how much you need to bet. Sometimes it's bonus + deposit. Read which one before you get excited.
Take a €50 no-deposit bonus at 35x. That's €1,750 in bets before you see a withdrawal. Take a €200 match bonus at 40x on bonus + deposit - you deposited €200, got €200 bonus, so wagering applies to €400. That's €16,000 in total bets.
Neither of those numbers appears on the promo banner. That's not an accident.
Why the number on the banner lies to you (a little)
Casinos aren't hiding the wagering requirement - it's in the T&Cs, always. What they're not doing is putting €16,000 in required bets next to 200% bonus in the same font size. Nobody would click that.
Behave doesn't mean don't take bonuses. It means know what you signed up for before you're three drinks and forty spins deep wondering where your balance went.
The terms that quietly ruin a bonus
Wagering requirement is the headline. These are the ones that actually decide whether you'll ever clear it.
Game contribution. Slots usually count 100% toward wagering. Table games and live casino? Often 10%, sometimes 0%. If you're a blackjack player who claimed a slots-promoted bonus, you might be grinding at 10x the effective rate without realising it.
Max bet while wagering. Most bonus terms cap your bet size, often at €5 per spin, while a bonus is active. Bet over that and some casinos void the entire bonus. Not the extra winnings. The entire thing.
Time limits. Seven days is common. Thirty is generous. If the wagering requirement is €8,000 and you've got a week, that's over €1,100 a day just to break even on the requirement - before you've won or lost anything.
Max withdrawal from a no-deposit bonus. Free money often comes with a cap on what you can actually walk away with, regardless of how much you technically won. Read this one specifically. It's the one that stings most.
How to actually check before you deposit
- Find the wagering requirement and confirm whether it's bonus-only or bonus + deposit
- Multiply it out - get the real number, in euros
- Check game contribution for whatever you actually play
- Check the max bet limit and the time limit
- Ask yourself if you'd take this deal if the banner said the real number instead of 200%
If the answer's still yes, go for it. Some bonuses are genuinely worth it. You just want to walk in knowing the terms, not find them out at withdrawal.
The honest version
A wagering requirement isn't a trap by design. It's how casinos stop people claiming a bonus and cashing out in one move. That part's fair. What's on you is knowing the real number before you play - not the one on the banner.
Come and play. Just do the maths first.