“10x wagering” sounds small until you work out what it means. Take a £50 bonus on a £50 deposit. With 10× on the bonus, you need to bet £500 before any of it becomes cash. At £1 a spin, that’s 500 spins, roughly an hour of play. The wagering requirement calculator above does that sum for any offer, and keeps track of how far you’ve got.
The same offer at 35×, which is still common, is £1,750. Make it 35× on deposit plus bonus and it’s £3,500. Same headline, seven times the work.
How the wagering requirement calculator works
Start with what the terms say the wagering applies to. There are three common versions:
- Bonus only. The friendliest. £50 bonus × 10 = £500.
- Deposit + bonus. Doubles the work on a 100% match. £100 × 10 = £1,000.
- Free spins winnings. You only wager what the spins paid. Won £8.40 at 10×? £84 to bet.
Then fill in game contribution, your usual stake and the RTP of the game you’ll play. If you’ve already started, put in the “wagered so far” figure from your account. You’ll see what’s left, how many bets that is, and roughly how long it takes.
Game contribution changes everything
Most casinos count slots at 100% and table games at 10% or less. On blackjack at 10%, that £500 requirement means £5,000 of real hands. Blackjack’s low house edge (about 0.5% with good rules) keeps the cost to roughly £25, against £20 on a 96% slot. So it’s not cheaper, and it takes ten times as many bets. A lot of terms also ban table games completely while a bonus is active, so check before you sit down.
What it costs you to finish
Every bet you place loses the house edge on average, so clearing wagering has a price. On a 96% slot, it’s 4% of what you bet:
Wagering requirement = bonus (or deposit + bonus) × multiplier Real bets needed = requirement ÷ game contribution Expected cost = real bets × (1 − RTP)
£500 of slot spins at 96% costs about £20 on average. Your £50 bonus is worth roughly £30 after that. At 35× the cost is £70, which is more than the bonus. At that point you’re paying for the bonus, not getting one. The bonus value calculator goes deeper on whether an offer is worth taking at all.
Things that trip people up
Max bet rules. Most bonuses cap your stake while wagering, often £5 a spin. Go over it once and the casino can take the bonus and the winnings.
Time limits. Seven to thirty days is normal. The calculator’s time estimate tells you whether that’s realistic for the way you play.
Wagering on winnings vs bonus. Some offers wager only what you win, others wager the whole bonus up front. Two offers that both say 10× can be very different, so pick the right option in the first box.
A bonus isn’t free money, it’s a deal with conditions. Only deposit what you’re fine losing. BeGambleAware.org is free and confidential if it stops being fun.