Understanding Wagering Requirements
What '35x bonus' really means, with worked examples for £10 and £100 deposits.

Casino bonuses can look incredibly generous – “100% up to £100” or “50 free spins” makes for an eye-catching headline. But the real value of any bonus is hidden in the small print, and the single most important term to understand is the wagering requirement. This guide explains what wagering means, how it is calculated, the traps to watch for, and why a wager-free offer is often worth more than a much larger bonus.
What “wagering requirement” means
A wagering requirement (also called a playthrough) is the number of times you must bet the value of a bonus before you can withdraw any winnings linked to it. It is usually expressed as a multiplier, such as “35x”.
So if you receive a £10 bonus with a 35x wagering requirement, you must place bets totalling £350 (35 × £10) before the bonus and anything you have won from it become real, withdrawable cash. Until you meet that requirement, the bonus and its winnings are typically “locked”.
The purpose of wagering requirements is to stop people from simply claiming a bonus and immediately cashing it out. From the operator’s point of view, the bonus is an incentive to play, not free money – and the playthrough is how they enforce that.
Bonus-only versus bonus-plus-deposit wagering
One detail that dramatically changes the value of an offer is what the multiplier applies to:
- Bonus-only wagering. The requirement applies just to the bonus amount. A £10 bonus at 35x means £350 of wagering. This is the more player-friendly version.
- Bonus-plus-deposit wagering. The requirement applies to the bonus and your deposit combined. If you deposit £10 and get a £10 bonus, a 35x requirement is calculated on £20, meaning £700 of wagering.
Two offers can advertise the same “35x” and yet one requires double the play of the other. Always check which basis applies before deciding whether a bonus is worth claiming.
Game weighting: not every bet counts the same
Here is a trap that catches many players. Wagering requirements are rarely satisfied at the same rate across all games. This is called game weighting or contribution.
- Slots typically contribute 100% – every £1 you bet counts as £1 towards the requirement.
- Table games like roulette and blackjack often contribute much less, sometimes 10% or even nothing.
- Some specific games may be excluded entirely from bonus play.
The reason is that low-house-edge games (like blackjack) would let a skilled player clear a bonus too cheaply, so operators reduce or remove their contribution. If you bet £100 on a game weighted at 10%, only £10 counts towards your playthrough. Always read which games count and at what rate.
Max-bet caps and time limits
Two further conditions can trip you up even when you are playing eligible games:
- Maximum bet limits. While a bonus is active, most casinos cap how much you can stake on a single bet – often around £5. Exceed that cap, even accidentally, and you can breach the terms and forfeit the bonus and any winnings from it.
- Time limits. Bonuses usually expire if not wagered within a set period, commonly 7 to 30 days. Any unmet wagering, and the bonus funds attached to it, are removed once the clock runs out.
These rules are not designed to be hidden traps, but they are easy to overlook in the excitement of a new offer. Reading them takes a minute and can save real money.
A clear worked example
Let us put it all together. Imagine this offer: 100% deposit match up to £100, 35x wagering on bonus and deposit, £5 max bet, slots count 100%, 30-day expiry.
You deposit £100 and receive a £100 bonus. Because wagering applies to bonus plus deposit, the requirement is calculated on £200:
- 35 × £200 = £7,000 of total wagering required.
- You must play eligible slots (which count fully) to clear it efficiently.
- You must keep each bet at or below £5.
- You must complete all of this within 30 days.
Suddenly that “£100 bonus” requires you to stake £7,000 within a month, never betting more than £5 a spin. Whether that is good value depends entirely on how much you intended to play anyway. The headline number told you almost nothing; the terms told you everything.
Why “wager-free” offers are better value
A growing number of UK casinos now advertise wager-free bonuses, particularly on free spins. With these, any winnings are paid as real cash with no playthrough requirement – you can withdraw them immediately, subject only to standard verification checks.
This is a genuine advantage. A small wager-free offer can be worth more in practice than a large bonus buried under 40x bonus-plus-deposit wagering, because you actually get to keep what you win. When comparing promotions, it is often smarter to look at:
- Whether the offer is wager-free or, if not, the wagering multiplier and what it applies to.
- The game weighting and any excluded games.
- The maximum bet allowed and the time limit.
- Any cap on the maximum you can win or withdraw from the bonus.
The sensible way to use bonuses
Bonuses are a legitimate perk, but they should never be the reason you gamble more than you intended. A useful rule of thumb: only claim a bonus if you were going to play that amount anyway, and always read the terms in full before opting in. If a requirement looks unrealistic for how you play, simply decline the bonus – you are under no obligation to take it, and many casinos let you play without one.
Above all, keep your gambling within affordable limits. Set a deposit limit when you sign up, never chase a wagering requirement with money you cannot spare, and take a break if it stops being fun. Free, confidential support is available from GamCare and BeGambleAware, and you can call the National Gambling Helpline on 0808 8020 133. You must be 18 or over to gamble.