Fact Checked by
Lee James Gwilliam
Ever wondered if there’s a way to tell which slot games return the most to players like you? Then you’ll be delighted to hear that information’s readily available, and we can give you answers right here and now. Read on for our best payout slots guide and use the comparison tools to help get the maximum bang for your buck every time you play.
Our handpicked list is perfect for finding the top payout slots developed by all the leading software providers. We update this list on the daily and if a new game with super high RTP drops, you’ll see it rank right here.
Like what you see? Simply click the link beside each slot to read the full review and try the game in demo mode. Inside, you'll also find casino bonuses you can claim as a newly registered player and put to use on the title in question.
Without further ado, here are the most generous slots around right now:
When we talk about ‘best payouts,’ we mean the highest share you can expect to receive back from the money you spend in a game. This usually involves playing a game with the highest possible RTP (Return to Player) percentage.
Let’s take Mega Joker from NetEnt as an example. With an impressive RTP of 99%, it’s one of the best payout slots around right now. Theoretically, you’d expect it to pay out £99 for every £100 spent on average in the long run.
However, this is only sometimes true in practice. When you play games at slot sites for a short time, the RTP varies, which explains why wins differ in size.
The bottom line is that the longer you play a game, the more likely you are to hit the jackpot, as it aligns with its expected average RTP. But let’s not forget the randomness factor. While not every spin will be a winner, there's always a chance you’ll hit a big payout if you’re lucky enough.
The best way to think about it is this. High RTP slots are the most generous to players collectively. But luck still ultimately determines whether you’ll be the one to take home some of that cash pot, and quite how much you take if and when that happens. If you played a high RTP slot regularly, the chances are that you’d have won more back along the way than if you’d played a low RTP slot. But there’s never any guarantees either way when lady luck is involved.
As you can see, RTP plays a crucial role in telling you how much money, on average, you could expect back on your bets. There are other indicators at play, but this is the main one.
Before a slot game is released, its RTP is calculated over millions of spins, and the result that spits out varies for each game. This information is then readily available, so it pays to do your homework before playing - and we’re here to get the ball rolling for you.
One thing we can’t promise to deliver is games with an RTP above 100%. If such slots existed, casinos would lose money on them. They’re still businesses after all, and no sound trader would provide a service at a loss.
Every online casino game has an RTP, including table games and live titles, but slots generally have some of the highest percentages around. That’s why they’re so popular among casino goers. The industry average for some of the best payout slots UK players can get hold of is 95-96%, but anything above this is impressive.
The easiest way to check the RTP for best payout slots online is to study the payables of each game.
If it's a game we've written a review for, which includes any of those shown above, follow the link to the dedicated page. We'll not only tell you what the RTP is here, but also detail gameplay features, bonuses, and other key stats.
Slot games at reputable and established casino sites are rigorously tested for fairness by an external agency called eCOGRA. You can trust that the RTP displayed for each game is accurate, because it's a data point that this organisation checks every time they run their tests.
While RTP is important and gives you valuable insight into expected returns, there are other things you need to consider when searching for the best payout slots. Here goes.
RTP and volatility are best friends.
While RTP can help you find the best online slots that payout the highest percentage of winnings, the volatility influences both the frequency and size of those wins.
Higher volatility levels indicate riskier gameplay and vice versa; lower volatility slots offer fewer risks.
Talking about volatility levels, these are the three main types:
Most slot paytables will tell you how volatile the game is, and if not, read our online slot reviews – we always include both RTP and volatility.
Jackpot slots come in two types: fixed and progressive.
Fixed jackpot slots offer in-game prizes that don’t increase in value. Progressive jackpots, on the other hand, grow as more people play the game and often snowball into millions.
For example, Jon Heywood won a record-breaking £13.2 million jackpot with just £0.25 on Mega Moolah.
This is possible because a small percentage of each bet from millions of players worldwide is put aside and added to the jackpot prize total. When someone like Jon wins it, it will reset and climb again.
While few will win a large jackpot, as fairly volatile slots, progressives are still some of the best payout online slots UK casinos offer. You may be attracted to high-risks games like these, as they offer the chance of a massive payout despite having a lower RTP than most.
If you enjoy playing for big jackpots, these are three games we’d really recommend right now:
Invented by Big Time Gaming, Megaways is a pretty cool slot mechanic that gives you up to 117,649 different ways to win on every single spin.
Dragon Born was BTG’s first Megaways game, but Bonanza made this engine famous. Seeing the appetite for such slots, many developers have remastered many popular titles into Megaways versions.
Visually, they’re very similar to the usual video slots online but don’t use the standard paylines.
Instead, each time you spin, the size of the reels will change – each reel can have up to seven symbols. This means that sometimes you’ll have more symbols and rows, and other times you will have fewer.
Sounds complicated? It is and it isn’t. You win if you match three or more symbols in a row on neighbouring reels. It’s even better if Megaways slots have tumbling reels, as they can offer multiple wins on the same spin.
If you’re looking to play Megaways slots, here are some titles we’d point you in the direction of:
Spins bonuses are a game-changer when it comes to making your funds go further. They’re like little gifts you get from the casino on sign up or when you deposit.
When joining a new casino with a free spins bonus, you can play slots without dipping into your own funds. Spending less money at the outset is always a good tactic for tipping things in your favour right from the get-go.
Many of our favourite online casinos regularly give them for free as extra promotions to keep the fun going. Some are free from wagering requirements, so you can keep what you win.
While you’re here, check out these three of the best free spins promos available right now:
Before claiming any spins promo, always remember to rigorously check the bonus terms – not all slots qualify for free spins promotions. What's more, only certain payment methods may unlock the offer, and you'll usually need to make a minimum deposit to kick things off. Still, these deals are an excellent way to get some extra bang for your buck - just check that small print.
Want to compare games? We designed this tool to help you choose the slot games that best suit your playing style.
To get started, select a few games from our lists above, or any other titles you know and like. The tool will then generate a side-by-side comparison so you can choose based on the online slots’ best payout and other valuable stats. Whatever combination of factors matter to you most, really.
Note: slot comparison tool will open in a new window.
When it comes to the best payout slots, online casinos partner with reputable software providers to fill their libraries with the highest-quality content.
The more studios each site teams up with, the more slots with high RTPs they can offer, which increases your chances of winning prizes.
So, it’s a good idea to choose a casino with multiple game developers who offer higher RTPs and payouts. and the industry names mentioned below are known for their generosity.
Microgaming is a well-known developer with a reputation for creating games with high payouts. Immortal Romance, which has an RTP of 96.86% is one of its most famous titles. However, the Lucky Riches Hyperspins slot game features an even higher RTP, ranging from 96.52% to 97.49%.
NetEnt is a leading provider of high-quality slots in the UK and worldwide. Its game portfolio boasts some of the highest payouts, with Blood Suckers being one of the most notable titles.
Launched in 2013, this game still stands tall with an impressive RTP of 98%, making it one of the highest RTP slots on the market.
Up next is Playtech, the largest online slot provider worldwide, which has been in operation since 1999. While it has released many slot titles, none has come close to matching the payouts of Ugga Bugga – 99.07%.
The next best is Golden Tour, with an RTP of 97.71%, closely followed by the 8 Treasures 1 Queen slot with an RTP of 97.29%.
A favourite developer for live casinos, it’s hard to imagine a world of slots without Play’n GO’s Book of Dead or Reactoonz titles.
However, if you’re searching for Play'n GO best-paying slots, check out its 3-reel classic, Ring the Bell. This game offers a high RTP of 97.03%, and you’ll also have the chance to win one of its three progressive jackpots.
Formerly SG Digital, Light & Wonder is a Las Vegas-based home to household brands such as Barcrest, known for its iconic Rainbow Riches. But when it comes to the best payout games, Starmania (NextGen) leads the way with a payout percentage of 97.87%.
Everyone knows IGT’s Da Vinci Diamonds, Golden Goddess and Cleopatra or the developer’s multi-level progressive jackpots. But not everyone may know about Texas Tea from IGT. Released in 2005, the game offers great bonus features and has an impressive RTP of 97.30%.
Wheel of Fortune on Tour features a 96.60% RTP if you’re looking for a more up-to-date slot from the developer to play with real money.
Although their RTP percentages rarely reach 96%, Novomatic’s high-quality slots are often featured at some of the best online casinos in the UK.
Today, we’re so used to playing games with an RTP of 96% or higher that we sniff at anything lower, even though 95% is still the industry average. Compared to many slots out there, the studio’s Twenty on Twenty has a relatively high RTP of 95.61%. But Novomatic RTPs remain on the low side overall.
With a portfolio of over 200 expertly crafted casino games, Betsoft is our final recommendation for slots with high payouts. Some of the best payout slots to watch out for include Good Girl Bad Girl (97.79%), Gypsy Rose (97.63%), and Sugar Pop (97.60%).
It’s all well and good finding a big payout slot game, but how do you play it smart? Here are the top tips from our casino experts on how to make the most of these titles.
Looking for free bonuses is always a good idea.
The best-paying slots sites often offer free spins as part of a welcome offer. Some may even have no wagering requirements, allowing you to keep all your winnings.
Still, always remember to read the small print to check the rules, such as game exclusions, validity, winning caps and wagering requirements.
Playing slots in demo mode is a smart move, whether it’s time-tested titles or new releases. This way, you can test every bonus round and feature without risking your money. And if you don’t like it, you haven’t spent a penny on these free slots in the UK.
Not all casinos offer demo play, but if you can, play for fun to see how the game behaves and only then bet real money.
You can have a spin at some game demos right here on Casinos.com. Just click the link through to any of the titles we list on this page, and you'll find the demo waiting for you alongside our expert review.
It’s tempting to keep playing even when you are losing. But setting a budget and sticking to it is more fun than chasing losses.
If you keep landing false or empty spins, it’s time to step back and reevaluate your strategy. You can always try using the casino’s deposit limit tools to help you manage your spending.
Don’t follow the crowd; play games that are right for you.
Work out what kind of games suit your playing style and budget. Do you prefer high-risk games that pay out big but rarely, low-risk games that pay out small but often, or something in between?
Choosing a suitable level of volatility will only improve your gameplay experience.
Remember to gamble responsibly. The best strategy you can have is to know your limits. It’s easy to get over-excited about landing prizes, but make sure you’re not losing more than winning.
Play smart by setting limits and keeping your budget in check. Gambling is meant to be fun, but if it’s not anymore, be ready for a quick cool-off.
Creating a new account can be a pain, but it's the only way to claim slot bonuses for the best payout slots.
Luckily, the best online casinos in the UK keep the signup process fairly simple. All you need to do is select the correct site for you. Perhaps you’re set on finding fast withdrawal casinos since they offer convenient options for deposits and cash-outs, or your bigger priority is the sort of welcome package you get – the choice is yours.
Just remember to check whether a site accepts your preferred payment method, whether you seek Via, e-wallet, Google Pay casinos or more.
Claiming bonuses is usually a part of the sign up process. And while every casino has its own setup, it usually involves the following:
Step 1: Choose a casino. Check out our latest list of the best payout slots on this page. Feel free to click around and read reviews. If you like the sound of it, follow the link to our recommended casino, where a bonus recommendation will await.
Our links will take you to the operator's homepage, where you can begin setting up the account.
Step 2: Create an account. This is the bit where you'll follow the casino's instructions. Read carefully what information the casino asks for and fill out the dedicated fields. You may or may not be asked to share your official photo ID at this stage.
Step 3: Deposit. Choose one of your preferred casino payment options. Remember to check the deposit limits and opt into bonuses if the casino wants you to do that. If there's a code, use it.
Step 4: Download mobile app. If you like mobile play, see if the casino offers any slot apps for your mobile devices.
Step 5: Play! While this step needs no explanation, always check for any restrictions on your bonus.
One bit that may slow you down is the KYC (Know Your Customer) checks. Casinos usually ask for your driver's licence, a passport, utility bill or bank statement, so be prepared. This could happen at any time from sign up all the way through to months into playing at the site. The approval speed depends on each casino, but most aim to process your documents within minutes.
Finding, testing, and reviewing best payout slots is what we do.
We first check in with the game developers to see what’s coming. Then, we scan lots of different online sites to see which games are new and trending. We even nose around dedicated poker sites and sportsbook-focused gambling names so that we don’t miss anything.
We love all games, but slot hawks as we are, we’re always on the lookout for the best new online slots in the UK. As soon as we can get our hands on them, we get to work.
We play them ourselves to test if they’re any good and then share our insights right here with you. RTP, volatility, mobile compatibility, playability, graphics, bonus features, payouts – you name it, we test it.
Our slot reviews are thorough and transparent, and if we run into any snags, we’ll tell you what to look out for.
Once we’re happy with the game, the next step is to look at the sites’ credibility where our favourite game’s trending.
From bonuses, withdrawal speeds, and user experience to licensing and USPs, we check every aspect of the casino before we make our final recommendation on wherever is best to play these top titles.
James worked in non-league football as a press officer before copy-editing local and national newspapers from around Britain. He then stepped into the online casino world in Malta as a copywriter, and since then, he’s continued his iGaming journey as a freelance writer, and is delighted to be helping make Casinos.com content the best it can be.Read Full Bio
Yes. With an RTP between 96%, 97%, 98%, even 99% in rare cases, slots offer some of the highest payouts you can find online. We’ve listed several slots with high RTP on this page, so be sure to check them out.
To stay updated, check back here often – our list is constantly changing. To keep it fresh, we stay connected with leading game developers and thoroughly review the best online slots and casinos in the UK so you can get the latest updates.
Yes. All games at the sites we list are tested for fairness by independent labs and use random number generators to produce fair outcomes. But note that while slots offer some of the highest payouts, they’re still based on luck, and there’s no guarantee you’ll hit the jackpot.
Casinos licensed by the UK Gambling Commission are required to audit all their games for fairness as part of their legal agreement. To ensure the reliability and accuracy of each game’s RTP, they collaborate with independent gambling authorities like eCOGRA to test their RNGs and verify the average payouts of their games.
Not necessarily. Developers set the volatility of each game, which determines how often and how big it pays out. Some games pay out smaller amounts but often, while others can pay large amounts very rarely. Either way, you’d get back more on average over time with higher RTP games.
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