The 6 Highest Paying Online Casinos

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Rainbow Riches Casino Bonus

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New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit.18+. Extra Spins: on Rainbow Riches. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. **£10 lifetime deposit for Daily Free Game., must opt in. Min £10 deposit & wager. 30 day expiry from deposit.18+. Extra Spins: on Rainbow Riches. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. **£10 lifetime deposit for Daily Free Game. #AD BeGambleAware.org

If you are looking for the best payout online casinos UK, welcome to our ultimate guide. Below is the most comprehensive overview of the best paying online casinos you can play at in the UK.

As well as offering the highest paying online slots, the sites we recommend also score highly in terms of bonuses, available games, usability, payments, and security.

Aside from these essential features, our goal is to find the casinos with the greatest return-to-player (RTP) rate.

RTP is calculated by measuring the total bets across all players against what the casino pays out in prizes. The number comes from a massive sample of players and hundreds of thousands of rounds. Even so, it is a good indicator of how much a game pays out.

So, keep reading our in-depth guide to the UK’s 6 best payout online casinos to find out more.

🏆 Overall Best Payout Online Casino UK: Rainbow Riches Casino

💰 Highest Paying Online Casino: 777 Casino

⏩ Fastest Payout Online Casino: Rainbow Riches Casino

🎰 Highest Paying Slot Game: Book of 99

A Closer Look at the Best Payout Online Casinos UK

1. Rainbow Riches Casino

• Payout Rate: 95.97%
• Payout Speed: 4-24 hours
• No. of Slot Games: 100+
• Welcome Offer: Play £10, get 30 Free Spins
• Types of Payment Methods Available: Visa Debit/Electron, MasterCard, Apple Pay, Maestro
• Review: Rainbow Riches Casino Review

Play £10, Get 30 Extra Spins

Rainbow Riches Casino Bonus

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New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit.18+. Extra Spins: on Rainbow Riches. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. **£10 lifetime deposit for Daily Free Game., must opt in. Min £10 deposit & wager. 30 day expiry from deposit.18+. Extra Spins: on Rainbow Riches. 1p coin size, max lines. Bingo: Advertised ticket value based on £1 tickets. Game availability & restrictions apply. **£10 lifetime deposit for Daily Free Game. #AD BeGambleAware.org

Rainbow Riches Casino is a unique site that has been part of the Gamesys stable of casinos since 2019. As the name suggests, this online casino is based on the popular Rainbow Riches slot from Barcrest. However, while Rainbow Riches steals the show here, the site is not dedicated to the franchise.

Of course, you get access to the complete Rainbow Riches series, including the main game and its numerous variants. On top of that, you can pick between a carefully curated selection of online slots. While the number of games is small, it is clear the Rainbow Riches Casino team has taken care to select a flexible array of top-quality slots.

NetEnt, Gamesys, Pragmatic Play, and around a dozen other leading software providers contribute games to Rainbow Riches Casino. While the site is light on promotions, the humble welcome package is accessible thanks to generous requirements.

Pros & Cons

2. 888 Casino

• Payout Rate: 96.60%
• Payout Speed: 24-72 hours
• No. of Slot Games: 1500+
• Welcome Offer: 88 No Deposit Free Spins + 100% Welcome Bonus up to £100
• Types of Payment Methods Available: Bank Wire Transfer, MasterCard, PayPal, Maestro, Neteller, PaysafeCard, Visa, Skrill, Trustly, Apple Pay, ecoPayz
• Review: 888 Casino Review

100% Welcome Bonus up to £100 + 88 Bonus Spins

888 Casino Bonus

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No Deposit Offer: New players with valid mobile number only• 14 day expiry • Valid for selected games • Pre-1st deposit only: FS voucher winnings is uncapped, bonus wins & max redeemable amount for non-funded players capped at £100, excl. JP wins • Wager Bonus x1 - req. contributions vary by game • Bonus expires in 90 days • Deposit Offer: 1st time depositor at 888casino only • £20 min • Bonus granted once deposit is wagered 20x • Bonus expires in 21 days • Both: Bonus wins capped at £500, excl. JP wins • Bonus & FP valid for selected games • Payment method & country restrictions apply • Withdrawal restrictions & No Deposit Offer terms & Deposit Bonus Offer terms apply18+ be gamble aware- Full Terms Apply

Launched all the way back in 1997, 888 Casino has earned its long-held reputation as one of the best online casinos in the UK. As you might expect for a casino that has been around so long, there is a huge game selection at 888, complete with great payout rates.

In fact, there is a grand total of over 1500 online slot games with an average payout percentage of 96.60%. And if you want more than just slots, you have various forms of roulette and blackjack to enjoy, along with video poker, baccarat, and much more besides. That's without even mentioning 888's thriving live casino!

The welcome offer features a no deposit bonus with free spins and also a generous 100% cash bonus.

When you consider all this casino has to offer, it's easy to see why over 17 million people worldwide play at 888.

Pros & Cons

3. PartyCasino

• Payout Rate: 95.35%
• Payout Speed: 24-48 hours
• No. of Slot Games: 1000+
• Welcome Offer: 100% Welcome Bonus up to £250
• Types of Payment Methods Available: Maestro, Neteller, PaysafeCard, Visa, Entropay, Skrill, Visa Debit/Electron, PayPal
• Review: PartyCasino Review

100% Welcome Bonus up to £250

Party Casino Bonus

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18+. UK players only. New customers only. Minimal initial deposit £10. Once the offer is claimed players have 30 days to release equivalent to initial deposit as a cash reward up to £250. 50x wagering requirement before cash rewards applied. Certain deposit options are excluded. T&Cs apply

PartyCasino ticks plenty of boxes, including as one of the best paying online casinos. Available in several global markets – including the UK under a UKGC licence – PartyCasino has been providing its top-quality brand of casino gaming since 2006. Known for its flexible game lobby that hosts over 1,000 online slots, PartyCasino is an ideal place for casino gamers.

As you might expect from such an extensive collection, PartyCasino partners with dozens of leading providers. From big hitters like NetEnt and IGT to lots of smaller developers. Players on PartyCasino can choose any game that suits their budget, play style, genre, and theme.

To warmly welcome new customers, PartyCasino has one of the free bets casino available in the UK. Alongside the 100% welcome bonus up to £250, customers can also enjoy a wide selection of ongoing promotions.

Pros & Cons

4. Megaways Casino

• Payout Rate: 96.01%
• Payout Speed: Up to 24 hours
• No. of Slot Games: 300+
• Welcome Offer: Play £10 and get 30 free spins
• Types of Payment Methods Available: Visa Debit/Electron, PayPal, Mastercard Debit, Maestro, Apple Pay
• Review: Megaways Casino Review

Deposit £10, Get 30 Extra Spins

Megaways Casino Bonus

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#Ad.New members only, must opt in. Min £10 deposit & wager. 30 day expiry from deposit. Extra Spins: on Secrets of the Phoenix Megaways. Spins value: 20p each. Play Responsibly. BeGambleAware.org. 18+. £10 lifetime deposit for Daily Free Game. Full T&Cs apply. www.begambleaware.org

As its name suggests, Megaways Casino boasts an impressive selection of thrilling Megaways slots. Yet, you can also find plenty of other casino games within the site’s well-organised games lobbies. With a licence from the UK Gambling Commission (UKGC), Megaways Casino uses the latest security technology to keep its UK customers safe.

Since opening in 2021, Megaways Casino has also become one of the best paying online casinos.

An excellent portfolio of games awaits you from behind Megaways Casino’s purple façade, covering over 300 of the best slot games, dozens of virtual table games, and over 20 live offerings. This is a casino that prioritises quality over quantity by collaborating with major providers such as Evolution Gaming, NetEnt, IGT, and more.

Alongside a lucrative welcome bonus, Megaways Casino runs quality promos for existing customers.

Pros & Cons

5. Aztec Wins Casino

• Payout Rate: 96%
• Payout Speed: 24-72 hours
• No. of Slot Games: 600+
• Welcome Offer: 100% bonus up to £200 + 20 free spins
• Types of Payment Methods Available: Maestro, MasterCard, Paysafecard, PayPal, Visa, Neteller, Skrill, PayByPhone
• Review: Aztec Wins Casino Review

100% Welcome Bonus up to £200 + 20 Extra Spins

Aztec Wins Casino Casino Bonus

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18+, New Players Only, A Matchup Bonus of 100% up to £200 and 20 Extra Spins on Gonzo Quest with promo code 'GDC20' (One Use Only) will be awarded on your first-ever deposit of £10. The Matchup Bonus will be awarded in Bonus Funds. T&Cs and 65x Wagering Requirements apply, £200 max total bonus, max bonus conversion equal to lifetime deposits (up to £250) AND FULL T&CS APPLY HERE

Aztec Wins is one of the most exciting new slot sites to hit the UK online casino scene and already ranks among the best payout slots sites in the UK.

Slots aren't the only types of games found at Aztec Wins, but it's mightily impressive that a brand-new site already manages to offer over 600 reel-spinning games.

One of the other main reasons the site has grown so rapidly is its valuable welcome offer. Aztec Wins pulls out all the stops with a 100% bonus worth up to £200 and 20 free spins. A major emphasis is also placed on ongoing promotions, so the bonuses don't stop once you've signed up.

Pros & Cons

6. 777 Casino

• Payout Rate: 96.62%
• Payout Speed: Up to 72 hours
• No. of Slot Games: 500+
• Welcome Offer: 100% matching bonus up to £100
• Types of Payment Methods Available: Bank Wire Transfer, EcoPayz, MasterCard, Neteller, PayPal, PaysafeCard, instaDebit, Visa, Entropay, Trustly, Skrill, AstroPay Card, WebMoney, iDebit, MuchBetter, Apple Pay, Instant Bank Transfer
• Review: 777 Casino Review

100% Welcome Bonus up to £200 + 77 Extra Spins

777 Casino Bonus

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18+New players only • No Deposit Offer: Claim in 48 hrs • 14 day expiry • Extra Spins (FS) wins credited as bonus & capped at £10, excl. JP win • Deposit Bonus Offer: FreePlay (FP) wins credited as bonus & capped at amount received, exc. JP win • Valid for selected games • Bonus wins capped at £500, excl. JP wins • Pre-1st deposit only: Bonus wins & max redeemable amount capped at £100, excl. JP wins • 50x wagering - req. vary by game • Bonus expires in 90 days • Payment method & country restrictions apply • Withdrawal restrictions & T&Cs apply: No Deposit Offer & Deposit Offer

Available since 2015 and part of the illustrious 888 Group, 777 Casino is a reputable online gambling site. UK bettors are guaranteed a world-class casino experience from the second they register, thanks to the site’s renowned parent company and multiple gambling licences.

But, if you love chasing bonuses, 777 Casino is arguably the best option around. Alongside the generous deposit match welcome, existing players can claim a diverse range of lucrative promos like cash back, raffles, mystery prize draws, comp points offers, and special jackpots. The best online slots payout percentage is something gamblers naturally look for, and 777 Casino has you covered there as well.

The online casino is also home to hundreds of top-quality slots from noteworthy providers like Playtech, NetEnt, and IGT, alongside several exclusive slots from 888 Gaming. 777 Casino’s expansive live casino library is also worth an honourable mention, which is one of the best currently available in the UK. There are around 300 games, some exclusive to 777 Casino, covering blackjack, roulette, poker, baccarat, game shows, and more.

Pros & Cons

Top 6 Best Paying Online Casinos in the UK Compared

Highest Paying Online Slots

Now you know the best payout online casino UK sites, what about the highest paying slots you can play? Well, below, we will detail the games with the best payout. Online casino customers in the UK can find these top-quality slot games at the sites we recommend on this page:

Highest Paying Casino Games

Online casinos are not just about online slots. In fact, the best paying online casinos also get their stellar reputation through casino games. Whether it is roulette, blackjack, poker, or another game, you can expect quality payouts from the following games:

How to Find the Best Payout Online Casino in the UK

UK customers have loads of choices when it comes to selecting an online casino. So, picking the top casino site for you can easily become overwhelming. That is where our dedicated team of industry experts can help.

Our team is comprised of casino specialists covering games, cybersecurity, finance, website design, and more. We look for the best paying online casino venues, so you don’t have to! Importantly, our search for the best casino operators is never over. We constantly scour the UK gambling industry to find the latest and greatest sites.

That is why it is worth bookmarking this page and checking back to see the best new casino sites, best game releases, and more.

Check Our Online Casino Reviews

A lot of work goes into our casino reviews. Therefore, you will find the most comprehensive casino reviews around on this page. Our team uses a strict, multi-step review process that covers every aspect of an online casino. No stone is left unturned, allowing us to give you a complete overview of a casino site, including the following essential criteria:

• Security: Our number one priority is the safety of our readers. You will never see us recommending an online casino that does not hold a licence with a recognised global authority (such as the UK Gambling Commission). Furthermore, we highlight casino operators that use the latest cybersecurity technology to protect customer data.
• Fairness: Top online casinos work with game providers that ensure the software is fair. Usually, this means allowing independent testing of games to assess if the results are random chance. In other words, all outcomes are determined by luck and not an unfair influence from the casino.
• Payments: We expect the casinos we recommend to provide flexible payment options from leading providers. Furthermore, those financial platforms should be completely secure, so you can deposit and withdraw casino funds with complete confidence.
• Games: At the heart of the casino experience is the games. Whether you love slots, table games, or the authenticity of live casino software, the sites you see on this page provide the ultimate flexibility. While we like to see as many games as possible, our reviews will also focus on the quality as well as the quantity.
• Bonuses: Casino bonuses are a handy way to boost your bankroll, whether you are registering for a casino or an existing player. The online casinos that actually pay out value their customers and will run lucrative welcome bonuses and ongoing promotions.
• Support: Problems occur, and mistakes happen, but it is essential to solve issues efficiently when they arise. We put casinos to the test by contacting customer support through all channels, including live chat, email, and FAQ sections.

While each of the criteria above is important, it is the combination of all these factors that determine the overall quality of an online casino. For our reviews, we are passionate about taking an honest approach. So, when we look at a casino, we will highlight its flaws as much as we praise its qualities.

Check the Game RTPs

When we seek the best casino for payouts, RTPs play a significant role in our assessments. The return-to-player (RTP) percentage shows how much a casino game will payout on average. So, if a slot has an RTP of 97%, it will return 97p (£0.97) on average for every £1 spent on a game. Yet, this does not mean every £1 you wager will return 97p each spin, as the average is from a sample of hundreds of thousands of rounds.

Sometimes you can beat the RTP (and make a profit), and other times you will lose to it (the casino makes a profit). Even so, the RTP is a good indicator of how often a game may pay out. While we discuss the RTP in our reviews of casinos and slots, you can also find this information for yourself. Game providers list the RTP of their software, while casino operators will often put the overall payout rate of the casino on their site.

Check the Terms and Conditions

Finding a casino’s RTP on the site itself highlights why it is important to read the terms and conditions when registering for an account. Understanding the T&Cs will help you become familiar with the requirements and limitations. Also, this is especially important with online casino bonuses, which often have wagering requirements, game eligibility quotas, and restrictions on payment methods.

We make sure to highlight essential T&Cs in our reviews, but you can also easily find this information at your chosen online casino.

Tips on How You Can Win Real Money at UK Online Casinos

Our in-depth reviews are always on hand to guide you through the UK online casino industry. You can also take a look through the casinos on this page to find top real money sites with the best payout rates. However, we think it is essential to pass on our knowledge and help our readers find the best casino games (and hopefully win money on them).

Our experts have put together the following list of top tips that may help you win real money at the casinos we recommend. Importantly, it is worth remembering that there are no guarantees of success when gambling at online casinos. That’s why we prefer to view online gambling as a form of entertainment.

So, the tips below won’t give you guaranteed success, but they may help you feel more confident in your ability and gamble more responsibly:

1. Choose the Highest Paying Games and Slots

As revealed on this page, there are tons of games available with high payout rates. You may have a better chance of success by picking slots and casino games with a high RTP. Remember, the RTP is over a vast sample, so it is not a guarantee you will win “X” amount. Still, choosing a game with an RTP may slightly tilt the odds of success in your favour.

2. Play at the Best Online Casinos

Choosing the right casino is vital. By selecting one of the best paying online casinos we recommend, you can boost your chances of winning. Each casino site we recommend provides a wide selection of games, including slots with a high RTP. Yet, you can also gamble with confidence, knowing our highlighted sites offer the strictest security standards.

3. Take Advantage of Casino Bonuses

Casino bonuses are a relatively straightforward way to boost your bankroll, giving you a little more to use on casino games. There are tons of bonuses you can claim, including deposit matches, free spins, no deposit offers, and more. Bonuses can be lucrative, but choosing promos with generous T&Cs is crucial. So, always check the wagering requirement and other limitations before committing to a bonus.

4. Play New Online Slots and Games

The iGaming software industry is constantly evolving and never standing still. Dozens of new games become available each month. While we love older games, it is always worth exploring new slots and other casino games. You may find a hidden gem, a modern classic, or just a new game that has an excellent payout rate.

5. Remember to Play Responsibly

Remember, gambling is meant to be fun and should be seen as a form of entertainment. Playing responsibly will allow you to keep having fun and avoid the pitfalls of problem gambling. If you feel you are struggling, online casinos have increasingly excellent resources. You can contact trained staff, set limits for deposits, bets, and time on the casino, and access charitable foundations to seek advice and help.