Slot machine payout percentage UK

What slot machine payout percentage means in the UK

In the UK the terms “payout percentage”, “percentage payout” and “return to player” are used for the same thing: the proportion of all money staked on a game that it is designed to pay back as winnings over a very long run. If a machine’s payout percentage is 92%, it is built to return £92 for every £100 played through it, on average, and keep £8. The amount kept is the house edge.

The figure is theoretical. It comes from the game’s maths model, documented in its par sheet, and only shows up in real results across huge numbers of spins. Your own session, or one evening’s takings on a pub machine, can sit far above or below it.

This guide focuses on the UK rules about showing the figure and how to find it. For the general idea, see our explainer on RTP, part of the wider guide to how slot machines work.

UK rules on payout percentages for online slots

Online slots offered to players in Great Britain follow the Gambling Commission’s remote gambling and software technical standards (opens in a new tab). Standard RTS 3 requires that, for each game, information is easily available before the customer commits to gamble, including a description of how the game works and either the return to player percentage or the probability of winning events. The guidance describes RTP as the average theoretical return.

The standards allow this information to sit in the game’s artwork, its help or “how to play” pages, or other supporting material, which is why the payout percentage usually appears in the game help screen rather than on the main reels. Separately, RTS 7 requires outcomes to follow the game’s theoretical probabilities and bans compensated or adaptive behaviour, so the published percentage describes a game that doesn’t change its odds during play.

What the standards don’t do is set a minimum. The approach is disclosure: tell players the return, then let them choose. In practice most popular online slots publish returns in the mid-90s, but a lower figure is legal as long as it is accurate and shown. Our RTP information rules page goes through the requirements in more detail.

Payout percentage rules for UK gaming machines

Land-based machines are split into categories by stake and prize. According to the Gambling Commission’s guidance on gaming machine categories (opens in a new tab), Categories B1 to B4 and C must display a theoretical target percentage return to player; Category B3A lottery machines must show the actual return for each lottery class; and Category D machines must show one unless they are crane grabs or penny falls.

For Categories B1, B2, B3 and B3A, the displayed value must be verified by the manufacturer or an accredited test house. See UK slot machine categories for the full rules, including the Category D subtypes.

Is there a minimum slot machine payout percentage in the UK?

No. The Gambling Commission’s category guidance states the display requirements but sets no minimum return for any category of gaming machine, and the government’s May 2024 decisions on land-based gambling kept existing stake and prize limits without adding one. The percentage is chosen by the manufacturer and operator from the settings available for each game.

You may read elsewhere that UK fruit machines must pay at least 70%. Wikipedia’s article on slot machines by country (opens in a new tab) repeats this, along with a claim that pubs often set machines at around 78%. We found no current Commission rule supporting a legal minimum, so we don’t treat either number as a regulation. The reliable figure is the one displayed on the machine you are playing.

Other countries do set minimums. In the United States, Nevada’s is often quoted as 75%. Those rules don’t apply in Great Britain.

Published payout percentages on popular UK online slots

Here are developers’ published figures for some well-known games. Where a game has several versions, the range is shown, because UK casinos can choose which one to run.

Jackpot games often look low because part of each stake funds the jackpot pool, and the developer may quote the base game separately. Compare like with like, and read our page on high-RTP slot machines if a strong published return is your priority.

Why the same slot can have a different payout percentage

Many studios release a game at several return settings. The graphics, paytable and features are identical; only the hidden weighting changes. Each casino picks the version it offers, so the same game can pay 96.71% at one site and 94.62% at another. On £1,000 of spins that gap is worth about £21 in average cost.

Because of this, a payout percentage quoted on a review site or in a news article may not match the game you open. The only figure that counts is the one in that game’s help screen at that casino. Our explainer on RTP variants covers how variants are made, and the guide to reading slot RTP in the UK shows what the wording in help screens means.

Payout percentages in pubs, arcades and casinos

There is no official data set comparing average payout percentages across venues, so be wary of claims that one type of venue always pays more. What the rules do tell you is the structure: a Category C pub machine is limited to a £1 stake and £100 prize; a B3 machine in an adult gaming centre or bingo hall to £2 and £500; and a B1 casino machine to £5 and £10,000, or £20,000 when linked.

Lower prize caps don’t automatically mean lower percentages, and higher stakes don’t automatically mean higher ones. The machine’s displayed target is the only reliable guide. Some fruit machines also use compensated maths, steering towards their target over a cycle of play; see our page on compensated fruit machines. For venue-by-venue rules, read pub slot machines, adult gaming centres and casino slot machines.

Venues pay Machine Games Duty on their net takings, at 5%, 20% or 25% depending on the cost to play. That duty comes out of the operator’s share, not your winnings, which aren’t taxed.

What a payout percentage means in pounds

A worked example makes the label on a machine more useful. Suppose a Category C pub machine displays a target return of 85% and you play 100 games at £1. You have staked £100, and the long-run average return on that much play would be £85, an average cost of £15. On an online slot with a 96% payout, 100 spins at £1 would cost £4 on average. These are averages only; in a short session you might win or lose much more.

The 85% figure above is illustrative, not a typical value for pub machines; always read the percentage on the actual machine. To see how stake and speed change the cost, try the scenarios in our slot machine odds guide.

How to check a slot machine’s payout percentage

1. Online: open the game, then the menu, “i” or paytable icon, and find the general rules section.
2. Look for “RTP”, “return to player” or “theoretical return”; note any separate figures for features or jackpots.
3. If you can’t find it, contact the casino’s support team; the information must be available before you play.
4. On a pub, arcade or casino machine, look for the percentage on the machine’s glass, cabinet or information screen.
5. Compare the figure across games you are considering, alongside volatility and stake, before you choose.

Our step-by-step guide on how to find a slot’s RTP walks through the help screen in more detail, and how to read a machine label covers what land-based machines display.

Payout percentage vs casino payout speed

“Payout” is also used for withdrawals, which causes confusion. A casino with “fast payouts” processes withdrawals quickly; that has nothing to do with the payout percentage of its games. Equally, no single casino-wide percentage applies to every game in the lobby. Each game has its own figure.

If your question is how quickly winnings reach your account, see the withdrawal-time guides for our partner casinos, such as Coral withdrawal times.

UK payout percentage myths

• “Pub machines must pay at least 70%.” No current Gambling Commission rule sets a minimum; read the percentage on the machine.
• “A machine’s payout percentage changes at busy times.” UK online games can’t change their odds during play, and machines don’t switch settings by time of day.
• “A high percentage means you’ll win.” It means a lower average cost. Losing sessions are still normal; see loose and tight slot machines.
• “The percentage shows what you’ll get back in a session.” It describes millions of spins, not one visit.

Where to play slots with clear payout percentages

UK-licensed casinos must make each slot’s payout percentage available before you play. Our partners’ welcome offers are for new customers aged 18+, and terms apply. Ladbrokes: play £10 on slots and receive 50 free spins a day for 10 days, up to 500 at 10p each, claimed by 23:59 each day, with no wagering. Coral: deposit and bet £10 on slots for 100 free spins at 10p on selected games, valid for 7 days, no wagering on winnings. PlayOJO: 80 free spins on Big Bass Bonanza at 10p each with a first deposit of at least £10, winnings paid as cash.

Which games and RTP versions each casino runs can change, so search the lobby and open the help screen before you play. A high payout percentage lowers the average cost but doesn’t remove it, so set limits first. For free, confidential support, contact GamCare (opens in a new tab) or the National Gambling Helpline on 0808 8020 133.

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.