Win cap

The two kinds of win cap

People use "win cap" for two different limits, and mixing them up causes confusion. The first belongs to the slot itself. The second belongs to a casino bonus.

The game cap is the same thing as a slot's max win. The bonus cap is often called "max bonus winnings" or "max conversion" in casino terms.

Game win caps at UK stakes

Because a game cap is a multiple, the pound figure depends on your stake. UK limits put the maximum stake at £5 a spin for players aged 25 and over and £2 for those aged 18 to 24, which sets the highest reachable cap for each game.

These top figures are extremely rare. Studios design max wins to be reached a tiny fraction of the time, and some publish the odds of reaching it in the help screen. Treat the cap as the upper edge of what the game can do, not as a target. Our guide on slot max win explained covers how these figures are set.

What happens when a game win cap is reached

On most modern slots, the moment total winnings from a spin or feature reach the cap, the round stops. Remaining free spins are forfeited, any multipliers still to apply are ignored, and you are paid exactly the capped amount. On older games without a stated cap, the maximum is simply the largest combination the paytable allows.

This matters on games with stacking multipliers, where a feature can in theory produce more than the cap. The studio counts capped outcomes at the capped value when calculating theoretical return, so the cap is already built into the RTP. Our answer on what happens when a slot hits max win explains the screen messages and payout process.

Bonus win caps: how a cap on bonus winnings works

A bonus win cap limits how much you can keep from playing with bonus funds. 10bet's casino welcome offer is a clear example: 18+, new UK customers, a 100% match up to £25 on the first deposit, with the bonus to be wagered 10x on slots within 3 days and maximum bonus winnings of £1,000.

1. Deposit £25 and receive a £25 bonus, so the bonus wagering target is 10 × £25 = £250 of slot stakes.
2. Play through the £250 within 3 days at stakes within the offer rules.
3. If your bonus-related balance ends below £1,000, the cap doesn't bite.
4. If a big feature takes it above £1,000, the terms limit what you can keep from the bonus to £1,000; check the full terms for exactly how the excess is treated.

In practice a £1,000 cap on a £25 bonus only matters after an unusually large win, but it is still a real limit. Our page on slot bonus maximum win caps compares how caps are worded across offers, and slot bonus with no max win explains which offer types tend to avoid them.

Promotional spin offers can carry their own winnings cap too. Where a cap isn't mentioned in an offer's key terms, read the full terms before opting in rather than assuming there is none.

How to check both caps before you play

• Game cap: open the slot's help or info screen and look for "maximum win" or "max exposure", stated as a multiple of the stake.
• Bonus cap: open the offer's full terms and search for "maximum", "cap" or "conversion".
• Check whether the bonus also has a max bet rule, which limits stakes while the bonus is active.
• Note the wagering requirement and expiry, since both interact with the cap.

Slot sites with published bonus caps

10bet's welcome terms state the £1,000 bonus winnings cap alongside the 10x wagering and 3-day window (18+, new UK customers, first deposit within 7 days, terms apply). Casumo offers a 50% bonus up to £100 on a first deposit of at least £20, wagered 10x within 7 days with a £5 maximum bet (18+, opt-in, terms apply); its key terms we hold don't state a winnings cap, so check the full terms. Remember that slots are entertainment that costs money, and losses are likely over time.

18+. Gambling should be entertainment that costs money, not a way to make it. Set a deposit limit before you play: how to set limits. Free, confidential help: National Gambling Helpline 0808 8020 133.