Bettors are often on the lookout for the best payout casino, but it can be tricky to work out which operators are running their games at the maximum payout level and which have reduced the potential for a big win.

By using the return-to-player - or RTP - metric, bettors can work out the best payout casinos available in the UK.

But it can be time-consuming to check RTP figures, so The Standard’s gambling team have done the legwork for you. We’ve compared online casinos that publish their genuine RTP figures to work out which is the top payout casino in 2026.

Return to Player, commonly shortened to RTP, is the percentage of every pound staked on a casino game that is statistically designed to pay back to players over millions of spins or hands.

So, a 96% RTP slot returns - on average - £96 in winnings for every £100 wagered over the long run. The remaining £4 represents the casino’s profit, often called the 'house edge'.

It is important to keep in mind that RTP is just a long-term statistical average - it does not mean that any individual session will result in the same return as the RTP percentage.

For example, a player could lose every spin on a 99% RTP slot in a 10-spin run, or hit a big win on a 90% RTP slot with their first spin.

Across the industry, most of the best online slots are set between 94%-97%, while table games are typically set at 98-99% if they are played optimally. Similarly, RTP for video poker rises to 99.5% with the best strategy.

Standard European Roulette has an average RTP of 97.30%, and standard American Roulette is slightly lower at 94.74% RTP.

The best payout casino is a site where the numbers are most in the player's favour - in other words, the best potential return when gambling, measured by RTP.

The Standard’s betting experts have based their reviews on two factors - the RTP figures published by the casino that tell the player what return to expect, plus the selection of high-RTP games across slots, table games and video poker, meaning that the player has a wealth of options with potentially higher returns.

Just because a site has a high RTP or is labelled as a best payout casino does not mean each session will be profitable. It simply means that the long-run maths on certain games are more favourable to the player than at lower-RTP sites. Casinos exist to make money, meaning the house always profits over the long term.

All the online casinos listed are licensed with the United Kingdom Gambling Commission (UKGC) and compliant with the January 2026 wagering and bonus rules, which banned mixed casino-and-sportsbook welcome offers and wagering requirements above 10x.

Mr Vegas’s library specifically flags a 'strong selection' of high-RTP slots for value-seeking players, and I also appreciate the fact that they have a ‘game payouts’ section of the website that updates to show any changes to RTP percentages for all their games.

The Mr Vegas welcome offer is a 100 per cent deposit match up to £50 plus 11 no-wagering free spins for use on Pink Elephants 2. Other welcome offer restrictions to bear in mind include the £10 minimum deposit, 10x wagering requirements on bonus funds from the deposit match but no wagering on the spins - although jackpot slots contribute 0% to wagering.

Mr Vegas also boasts the largest library on this list with 9,600+ games from top studios including Microgaming, NetEnt and Pragmatic Play. There are 750+ live dealer tables from Evolution, Pragmatic Play Live and Playtech, and also multi-million WowPot progressive prizes.

Mr Vegas is not lacking in terms of casino bonuses - Rainbow Fridays provides a guaranteed win, with bettors awarded up to £300. The Wheel of Vegas randomly-triggered jackpot wheel has Mini, Major and Mega tiers with different prizes. In terms of negatives, I’m not a huge fan of the old-fashioned site layout, which matters even more given there’s no app.

Virgin gives bettors the opportunity to learn about RTP through its various casino guides, including one on online slots, which offers plenty of handy tips for picking out the highest-payout games.

Click into a game itself on Virgin and you’ll find a detailed breakdown of how the game works, what the different bonuses entail and betting limits. One key aspect missing from those game breakdowns is the RTP for each game, something I’d like to see added by Virgin Games in the future.

Virgin does provide a good selection of high RTP slot games, including the likes of Money Cart 2 (98%) and Immortal Romance (96.86%), while players can jump across to the online casino or live casino to play higher RTP table games like blackjack or roulette.

Virgin Games’ high payout casino credentials are further enhanced by the pledge to pay out on all bonus wins in cash with no wagering attached while also not applying a max win cap to their promotions.

Since launching in 2024, Pub Casino has become one of the best new casino sites in the UK.

They have a 96.10% headline payout percentage from their large collection of 2,200+ games, including 200+ Evolution Gaming live dealer tables.

The operator’s welcome offer is 50 no-wagering free spins worth 20p each, providing a face value of £10. The Pub Casino welcome offer has no maximum win cap, although it does expire after 48 hours - quite a tight expiry window.

A big draw is the exclusive Pub Casino-branded live blackjack and roulette, but there’s also crash games such as Spaceman and Speed Crash.

Disappointingly, I found the promotions tab to be effectively empty during testing. There are no reload offers, daily free spins or weekly cashback running, nor is there a VIP programme.

Part of the Rank Interactive group, Spin&Win is home to over 3,000 games with a focus on slot games and slingo. There are all manner of slot games available, and it's easy to find what you need with Spin&Win doing a good job of categorising their titles.

Each slot game is also accompanied by an information page, where bettors can see the mechanics of the game and, most importantly, find out the RTP of that title. During our review, we looked at classic titles, like Starburst, which is being run at the maximum 96.01 per cent RTP on Spin&Win.

Elsewhere, there’s a decent selection of ongoing promotions for bettors, with daily free spins available, while the welcome offer is slightly from the standard one usually found at Rank Interactive sites. Here, bettors can get 200 free spins on Fishin’ Frenzy The Big Catch 2 when they deposit and play through £20.

The Ladbrokes casino undergoes RTP audits by the independent group Gaming Laboratories International, who found the RTP to be at the highest possible setting on nine of the 10 slots they tracked.

Ladbrokes’ welcome bonus gives new users 500 no wagering free spins, valued at 10p each, in exchange for a £10 deposit. Players have seven days to use the free spins across a 12-game eligible pool, the broadest on this list. However, it must be pointed out that deposits from e-wallets such as Neteller, PayPal, Paysafecard and Skrill are excluded.

Only Betfred can match the depth of the 200+ progressive jackpot slots that Ladbrokes can boast. The operator has 50+ exclusive Ladbrokes-branded titles, including Big Banker, Lock O' The Irish, and Well, Well, Well.

Overall, there are over 5,700 casino games on Ladbrokes, with 600+ live dealer tables across providers such as Evolution, Playtech Live and Pragmatic Play Live.

There’s also a broad range of RNG table games, including blackjack and roulette variants, Craps, Heads-Up Poker, Hi-Lo, and Jacks or Better.

Ongoing promotions from Ladbrokes include the Instant Spins Daily Free Game and the Instant Rewards monthly giveaway of cash and free spins.

Sky Vegas has an average RTP of 96 per cent across all games, which includes slots, table games and live casino. They make it easier to find the highest payout casino games via filters at the top of various categories on both the desktop site and one of the UK’s best casino apps.

Selecting ‘filter’ will bring up various options, including a sliding scale for RTP and a volatility option, meaning bettors can filter by low volatility for a potentially steadier return on their games.

RTP is clearly displayed on each game’s page and while Sky Vegas doesn’t have many high paying slots, their transparency over expected returns arms bettors with vital information.

All this information is available without being a member of Sky Vegas, but for those interested in opening an account, they can claim 50 free spins without making a deposit, plus another 200 free spins after wagering £10.

Video Slots offers greater transparency on the potential payouts from casino games, with bettors able to check updates to the RTP on the game payouts page. The page lists any changes made to casino games, covering slots, table games and live casino products.

Bettors can search for their preferred games and see the RTP of each on Video Slots. The RTP can change quickly with some games receiving daily updates, but Video Slots makes it easy to check what the current RTP is.

This search feature covers all 10,000-plus casino games available on Video Slots, which boast one of the biggest libraries among UK casino sites.

The majority of those games are slots, and punters can compete against one another when playing those slot games at Battle of Slots on Video Slots. It’s a truly unique feature not available at any other UK casino site and features a wide range of tournaments to suit the majority of bankrolls.

Although LeoVegas Casino may not offer as many premium progressive jackpot slots as others on this list, the fact that their 60+ selection covers all six major networks - Age of the Gods, Jackpot King, King Millions, LotsaLoot, Mega Moolah, and WowPot - is a huge selling factor.

There are also LeoVegas-branded exclusive slots - Gates of LeoVegas 1000, LeoVegas Cluster Gems, and LeoVegas Megaways - in a library filled with over unique titles.

LeoVegas’s library of 4,000+ games is the second-deepest on this list but each game is accompanied by a small summary, including game type, pay mechanic and, most importantly for a high payout casino, volatility.

This means bettors can work out their potential returns on high-volatility games, which provide fewer frequent wins but larger payouts when they do arrive.

BetMGM does not publish RTP directly on its UK slot pages, though each game page shows volatility, and BetMGM runs a separate RTP guide plus a highest-payout-slots list (partly US-only).

Within the UK library, high-RTP titles include Jack Hammer and Mighty Black Knight.

BetMGM are known for having one of the largest collection of jackpot slots in the UK, so if you land one of those top prizes BetMGM will certainly feel like the best payout casino, but it also means there are plenty of high volatility games to be aware of when navigating the site or app.

The BetMGM welcome offer is a little different to what some bettors will find at casinos, with a 100 per cent deposit bonus up to £50 and 125 free spins offered as a reward, but only after punters have wagered their deposit amount 10x on selected games.

The deposit bonus is paid in cash and the free spins carry no wagering.

Betfred averages around 97% RTP across its slots and boosts select titles above the developer default, such as Blueprint's 777 Deluxe running at 95% here versus the standard 92%. The live blackjack sits at 99.50% and roulette at 98.65%, so the payout maths stacks up before you've even spun.

It's also one of the few UK casinos to publish the RTP of every slot in a dedicated information section on each game page, giving players the transparency to hunt out the highest-returning titles rather than guess.

The welcome offer plays into the same value angle: up to 200 no-wagering free spins with a three-way choice, unlocked with a £10 deposit plus £10 wager and valid for seven days, with anything won paid straight to cash.

Backing that up is a 2,700-game library including 200-plus progressive jackpots (joint-deepest with Ladbrokes), Betfred-exclusive slots, 100-plus live tables and one of the fastest cash-out routes on the market via Visa Fast Funds, alongside ongoing promotions - the Free Spins Accumulator, Mystery Free Spins, Prize Reel and Comp Points - that keep the value ticking after the welcome expires.

NetEnt's Mega Joker and Relax Gaming's Book of 99 are the highest-RTP slots covered on this list.

The figures below are the long-term RTPs shown on each game's information panel; individual sessions will vary, as will RTPs, with operators able to change the RTP of games on their platforms.

The highest RTP slots typically sit at percentages between 94% and 97%, but there are a handful of standouts above 98% and even the rare 99% title that crops up.

NetEnt’s Mega Joker and Relax Gaming’s Book of 99 both sit at the highest RTP of 99%.

Mega Joker is a classic 3-reel, 5-line title featuring mystery wins, a progressive jackpot, and a Supermeter mode, where winnings from the basic mode are used.

Book of 99 is a Greek mythology-themed 3-reel, 5-line slot with a bonus round that triggers with either three symbols or by collecting 99 books.

Thunderkick’s 1429 Uncharted Seas sits just below at 98.60%, and is a five-reel slot with 25 pay lines. There’s also a bonus round with free spins.

Blood Suckers is another NetEnt slot, with an RTP of 98%. One of the oldest games on this list, launching in 2009, Vampire-themed Blood Suckers is five reels and three lines, with a bonus round and 25 pay lines.

NextGen Gaming is the studio behind Starmania, with the standout feature being the double-up bonus round. It has an RTP of 97.87%, just above Big Time Gaming’s White Rabbit Megaways.

White Rabbit Megaways’ unique feature drop allows players to buy the feature at any time, with a price set at the beginning of the game. The price drops every time the player gets a BTG coin.

There are three main table game categories - blackjack, baccarat and roulette. The RTP changes for each game, but this is dependent on whether the optimal strategy is followed when playing.

Blackjack tables offer single-deck blackjack, which, when played with basic strategy, returns around 99.50% RTP - making it the highest RTP of any standard table game. Multi-deck variants run a touch lower, between 99.0 and 99.3%.

Remember, the player must use basic strategy to hit these figures. Poor strategy drops the effective RTP by several percentage points.

On baccarat tables, the banker bet returns 98.94% RTP and is the highest-RTP single bet in the game. The player bet sits at 98.76%, while the tie bet is 85.64% and should be avoided. Bettors who simply bet banker every hand are playing one of the highest-RTP table bets in any UK casino.

Roulette RTPs can depend on the variant of roulette being played.

European Roulette, or single zero roulette, returns 97.30% RTP - which is reliably higher than American Roulette or double zero roulette, which sits at 94.74%.

French Roulette with La Partage or En Prison rules pushes RTP up to 98.65% on even-money bets, but this variant is rarer at UK casinos. When possible, choose European roulette over its American cousin for the highest RTP.

Nearly all the casinos on this list offer the above games in both virtual (RNG) and live dealer formats.

Video poker is the highest-RTP category at any UK casino, but only when it is played with optimal strategy.

Jacks or Better with full-pay paytables and optimal play returns 99.54% RTP, for example.

Other high-RTP video poker variants include Deuces Wild with full-pay paytables, which can return above 100% RTP in theory - the only casino game where this is possible.

That being said, full-pay Deuces Wild is rare at UK casinos in 2026. Joker Poker, Kings or Better, sits at around 99.07%.

Just like the live tables, video poker requires the player to use correct strategy to hit the highest possible RTP figures. Poor play will drop the effective RTP by a significant amount. To find the best strategies, there are free strategy charts widely available online.

Of the casinos listed on this page, Sky Vegas, BetMGM and Ladbrokes carry the deepest video poker selections.

We only feature UKGC-licensed sites. If a best payout casino can't show its licence, it doesn't make the list.

The Standard’s betting experts rank operators on the following criteria, and we recommend you also consider the following factors when making your own choice of online casino.

UKGC-licensed UK casinos are required to provide a baseline set of responsible gambling tools, including but not limited to deposit limits, time-outs, reality checks, and self-exclusion. Most also integrate with GAMSTOP for permanent self-exclusion.

The Standard recommends setting a deposit limit whilst creating your account, taking regular breaks during play, and treating any winnings as a bonus rather than expected returns - casino games are designed for entertainment, not a reliable source of income.

High-RTPs are not a guarantee of profit. If you need free, 24/7 support, you can call GamCare on 0808 8020 133, visit GambleAware.org, or search for GAMSTOP - a free self-exclusion service that works across all UK-licensed gambling sites.

Sky Vegas’s transparency on RTP figures highlights its position as one of the best payout casinos in the UK, just ahead of Virgin Games and Pub Casino, with the latter publishing a site-wide RTP of over 96%. Remember, ‘best’ can be subjective beyond the pure numbers, as it can depend on whether you value transparency, library depth or availability of a specific game category.

Mega Joker and Book of 99, provided by NetEnt and Relax Gaming, respectively, both publish RTP percentages of 99.00%. This makes the two slots the joint-highest among mainstream UK slots.

Thunderkick’s 1429 Uncharted Seas at 98.60% and NetEnt’s Blood Suckers at 98.00% follow closely. Popular choices, all four are available at multiple casinos on this list.

If played with the optimal strategy, Jacks or Better video poker has an RTP of 99.54% - the highest of any mainstream UK casino game.

Single-deck Blackjack with basic strategy follows closely at around 99.5%. Both require correct strategy to hit those figures - poor play can drop the effective RTP quite significantly.

Pub Casino publishes a 96.10% operator-wide payout percentage, the only headline figure of its kind on this list.

A casino's payout rate is the percentage of all stakes the casino returns to players as winnings, averaged across every game. Essentially, it is RTP measured across the whole site rather than for a single game. The industry average sits around 95 and 96%, whilst the best payout casinos publish figures of 96% plus.

RTP is a measure of the casino's house edge, not a guarantee of user safety. A 'safe' casino is one with a valid UKGC licence, shown in the footer, with evidence of independent game-fairness audits from companies such as eCOGRA, iTech Labs, or GLI.

UKGC-licensed casinos should also have responsible gambling tools and a clear complaints route via IBAS. All the casinos on this list meet those criteria - RTP simply tells you the maths.