Ante bet slots explained

What ante bet slots are

An ante bet is an optional extra amount added to each spin. In return, the game changes something: most commonly the scatter symbols that trigger free spins land more often, but some games add extra symbols, switch on a modifier or open a feature that is otherwise unavailable. You switch it on with a toggle, usually labelled 'ante', 'double chance' or similar, and it stays on for every spin until you turn it off. The ante bet glossary entry has a one-line definition.

The name comes from card games, where an ante is a compulsory stake paid before the deal. In slots it is voluntary, and it is better thought of as a second setting on your stake: base bet plus ante equals what you actually pay per spin. This page explains how that trade works, what it costs, how UK rules treat it and how it differs from a bonus buy. It sits within our slot features hub.

How an ante bet works, step by step

1. You choose a base stake, say 20p.
2. You switch on the ante. The game adds a set percentage, shown in the help screen, so the total stake per spin rises.
3. The game swaps to a different maths model, typically reel strips with more scatter symbols, or a modifier that only runs with the ante on.
4. Ordinary wins are commonly still worked out on the base stake, so the extra money mostly funds the more frequent bonus.
5. Each spin is still random and must last at least 2.5 seconds in the UK; the ante changes probabilities, not the speed or the rules of play.

Because the ante is a separate maths model, it usually has its own RTP. Online casinos in Great Britain must make the RTP or likelihood of winning available before you play, under the Gambling Commission's RTS 3 standard on game rules and the likelihood of winning (opens in a new tab), so the figure with the ante on should be in the game's information screen. Our guide on how to find a slot's RTP shows where.

Ante bet maths: a worked example in pounds

Our verified facts list Sweet Bonanza Xmas by Pragmatic Play at 96.48% RTP, or 96.51% with Ante Bet. The facts don't include the size of that game's ante, so the example below assumes an illustrative 25% uplift; check the game's own help screen for the real figure.

The ante version returns a fraction more per pound, but you put more pounds through, so the average cost of the session rises by about 84p. The higher RTP does not make the ante cheaper to play; it only means each pound staked loses slightly less on average.

The trade looks different if you measure the cost of each bonus. Suppose, again for illustration only, that the base game triggers free spins once in 400 spins on average and the ante doubles that to once in 200.

You would see bonuses more often for less stake each, but the base game would return less, because ordinary wins are still paid on the 20p base while you pay 25p. The total return is set by the RTP in both cases. What the ante really changes is the shape of the session: more of the return arrives through bonuses, which suits players who mainly play for the feature, and the bill per hour is higher. Our pages on bonus trigger odds and how many spins until a bonus explain trigger rates further.

Ante bets and the UK online slot stake limits

The UK stake limits apply per game cycle, and the Gambling Commission's online slots stake limit guidance (opens in a new tab) says further stakes within a cycle count towards the limit. An ante is part of the stake, so it counts in full. Players aged 25 and over can stake up to £5 a spin (from 9 April 2025); players aged 18 to 24 can stake up to £2 (from 21 May 2025).

In practice the game or casino stops you choosing a combination above your limit. Our pages on the £5 online slot stake limit and the £2 limit for 18 to 24-year-olds give the full rules.

Ante bet vs bonus buy: why one is offered in the UK

A bonus buy, or feature buy, lets you pay a fixed price, often many times your stake, to go straight into the bonus. Slots supplied to UK-licensed casinos don't offer it; that is how developers supply games for Great Britain rather than a dated rule we can point to. An ante bet is different in kind: you still play normal spins, each within the stake limit and the 2.5-second minimum, and you still have to land the trigger.

Some games have both. Extra Chilli Megaways, for example, lists 96.82% RTP with its Feature Drop buy option and up to 96.41% without; UK players see the version without the buy. See bonus buy in the UK for more.

Other slots where paying more changes the maths

Ante bets are the clearest case of a slot changing its maths when you pay more, but not the only one. Figures below are from our verified slot facts.

Read more on Mega Joker, Reels of Gold and Rainbow Riches Pick 'n' Mix. Several other pays-anywhere games from the same studio as Sweet Bonanza Xmas, such as Sweet Bonanza, have similar options in some versions; the help screen confirms whether yours does. Our question page should you bet max? looks at the same trade from the stake side.

How an ante bet changes volatility and session length

Turning on an ante usually shortens the gap between bonuses and lowers the base game's return. For many games that makes sessions feel more eventful, but two effects work against your budget:

• The stake is higher, so a fixed budget covers fewer spins: £20 lasts 100 spins at 20p but 80 spins at 25p.
• Bonuses still vary enormously in value, so more of them does not mean steadier results.
• With more of the return tied up in bonuses, a session without one is more expensive than before.
• If you are playing with bonus funds, a max-bet rule applies to the whole stake, ante included, so check the terms.

Our guide on how long your money will last on slots runs the numbers for other budgets.

Ante bet myths and facts

Whether to use an ante is a question of taste, not strategy: it moves value from the base game into bonuses, at a higher price per spin. Nothing about it beats the house edge.

Is there an ante bet on UK fruit machines and pub machines?

Not in the online sense. UK gaming machines have fixed stake ceilings by category, from £1 on a Category C pub machine to £2 on B2, B3 and B4 and £5 on casino B1 machines, and the machine's features are part of its approved design. On a machine, the only lever you have is the stake itself, within the category's ceiling. The full list is on our UK slot machine categories page.

Where to play ante bet slots in the UK

Ante options are mostly found on pays-anywhere and cluster slots, which UK casinos stock widely, but game ranges change, so search for the title before joining. Note that free spins from welcome offers are played at the value the casino sets, so you won't be choosing an ante on those spins.

These offers are for new customers aged 18 and over, and terms apply. Coral: deposit, then bet £10 or more on slots and receive 100 free spins on selected games at 10p each, which must be accepted within 48 hours and used within 7 days, with no wagering on winnings; the offer runs from 1 October 2026 to 1 February 2027 and Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards don't qualify. Ladbrokes: deposit and spend £10 on slots for 50 free spins a day over ten days (500 maximum), each 10p on selected games, claimed by 23:59 daily and valid 7 days, with no wagering. PlayOJO: first deposit of at least £10 for 80 free spins on Big Bass Bonanza, 10p each, no wagering, new UK customers outside Northern Ireland. Coral and Ladbrokes are run by the same company, LC International Limited. See Ladbrokes for more on that casino.

An ante makes each spin cost more. Set a deposit limit in your account before you start, and use time-outs or GAMSTOP if you want a break.

18+. Gambling should be entertainment that costs money, not a way to make it. Decide a budget before you play: plan a slot budget. Free, confidential help: National Gambling Helpline 0808 8020 133.