Highest Payout Online Casinos | UK 2025

What is a High Payout Online Casino?

When we select the best payout casinos, KingCasinoBonus.uk experts have a simple definition: a high-payout online casino is a gaming site which provides many games with the most favourable odds and highest return-to-player (RTP) percentages.

Conversely, the best payout casinos in the UK give you the best payout potential.

Generally, a high-paying online casino has more games with a high RTP, translating to more money paid out in winnings than the house keeps.

How do we verify payouts?

KingCasinoBonus experts examine official payout reports published by regulators and auditors like eCOGRA to confirm percentages.

Our recommended high-payout casinos excel in two key areas:

• Game Variety – A diverse selection with 97% and even 99% RTP slots and table games with low house edges under 1%.
• Fair Play – A proven track record of statistically sound payouts confirmed by regulators, user input and our experts.

Compare The Top 10 Best Payout Casinos in the UK

The best payout casinos selected by KingCasinoBonus.uk provide the best payouts in today’s UK market. With over 7 years of experience in the gambling field, our experts carefully analyzed over 200 gaming sites to identify those with the best payout rates. Wondering how we chose?

We looked at several key factors of each new best payout online casino in the UK, including the years each site has been operating and their overall trustworthiness, the published RTP of their top paying game, the total number of slots, and minimum deposits required.

You can consult our list and pick from the highest-ranked best payout casinos:

#1 Monopoly Casino – Best Payout Casino UK with No Wagering Bonuses

• Payout time: 1 Day
• Online since 2015
• Games: 400+

King’s Verdict – 4.1/5

We ranked Monopoly Casino among the best payout casinos because it offers generous welcome offers. The first deposit bonus is straightforward because you only have to deposit and wager £10 on any high payout slot on the website. After that, you will receive free spins with no wagering designed for a top-tier high payout slot, Monopoly Paradise Mansion. Furthermore, we appreciate that this platform will give you free spins without wagering to play one top slot that pays because Monopoly Paradise Mansion comes with 96.29%.

#2 Double Bubble Bingo – Experience Bingo at a Top Payout Casino UK

• Payout time: 1 Day
• Online since 2021
• Games: 750+

King’s Verdict – 4/5

We’ve ranked Double Bubble Bingo among the best payout casinos thanks to its fast 1-day withdrawal time and its impressive mobile performance. With 750 slots from 30 top providers, including NetEnt and Play’n GO, it delivers both quality and variety. The live casino collection is backed by Evolution Gaming, and although the payment options are limited, the platform scores high on usability and speed.

#3 Jackpotjoy Casino – Best Payout Casino for Progressive Jackpot Slots

• Payout time: 1 Day
• Online since: 2002
• Games: 750+

King’s Verdict – 4/5

Jackpotjoy Casino earns its spot on this list with 1-day payouts, 750 high-quality slots, and over two decades of experience in the UK market. We liked the modern design of both the desktop site and mobile app, and the in-house exclusive slots give it a unique twist. Moreover, the live casino powered by Evolution offers 60+ games including blackjack and poker variants.

#4 SlotStars – One of The Best High Payout Slot Sites in the UK

• Payout time: 1-2 Days
• Online since: 2020
• Games: 5500+

King’s Verdict – 4.6/5

SlotStars Casino stands out as one of the best payout casinos for its huge 5500+ slot library and dedicated iOS/Android apps. We were especially impressed by the advanced slot filtering tools and the presence of over 130 live dealer games from providers like Evolution and Playtech. While the live chat is not available 24/7, the interface is intuitive and there’s no monthly cashout limit, making it a great fit for high rollers.

#5 Bingo Games Casino – Highest Payout Online Casino for PayPal Withdrawals

• Payout time: 2-3 Days
• Online since: 2018
• Games: 2200+

King’s Verdict – 4/5

Bingo Games offers over 2200 titles from major developers like NetEnt, Microgaming, and Playtech. Most of these come with payout rates surpassing 95%. Moreover, the site blends bingo and casino games with a smooth interface and diverse bets starting at £0.10. While the payout time is slower than others on this list, we liked its £5 minimum deposit on select methods.

How We Test & Review The Best Payout Casinos

At KingCasinoBonus, our mission is to offer UK players reliable and trustworthy casino recommendations. When it comes to the best payout casinos, we follow a rigorous process to ensure you get the highest returns and an overall fair and secure gambling experience.

Our lead editor, Vlad George Nita, oversees the review process, which begins with verifying the casino’s licensing and credentials. We then examine payout percentages, user feedback, and our internal testing results to determine how well the casino delivers on its promises. Each of these factors influences the final rating you see on this page.

To guarantee that only the best payout casinos make our final list, we go beyond surface-level checks. These are the key elements we evaluate during our reviews:

• Licensing and Security: We verify that each casino holds a valid UKGC license. We also check for additional certifications from independent agencies like eCOGRA to ensure the platform adheres to the highest standards of fairness and safety.
• Payout Rates: We find payout percentages based on independent auditors and regulating agencies. Misleading payout rates can be a sign of rigged activity. Hence, we allow only those casinos on our list that have proper information about this topic that is clearly transparent and straighforward.
• Gaming Library: We check the variety and quality of games on offer, and whether these are from licensed reputed developers. For this, we also verify the RTP rates of slots and table games to find out if they offer fair outcomes.
• Payment Methods: We evaluate the payment methods available, focusing on the speed of withdrawals, any associated fees, and the casino’s policy on payout limits. Casinos offering fast and hassle-free withdrawals receive higher ratings.
• Customer Support: A responsive and helpful support team is essential. We test how well the casino handles player inquiries through various channels, including live chat, email, and phone support.
• User Experience: The casino’s interface, mobile compatibility, and ease of use are also reviewed. We ensure that the platform runs smoothly on both desktop and mobile devices, providing a seamless experience.

Game testing agencies we look for

How to Pick Casinos With The Highest Slot Payouts?

• Choose a reliable casino: Start by selecting a trusted casino from our curated list of platforms known for offering the highest slot payouts.
• Check new 2025 casinos: Explore the latest casinos to see if they have the game provider or slot titles that interest you. Newer platforms often offer competitive payouts to attract players.
• Verify licensing and security: Ensure the casino holds proper UKGC licensing and is regulated for safe and fair gameplay.
• Review terms and conditions: Thoroughly read the casino’s terms, including bonus policies, payment terms, and withdrawal methods, to avoid any hidden conditions.
• Look for bonus opportunities: Take advantage of any free no deposit or welcome bonuses that can enhance your bankroll without risking your funds.
• Follow the platform’s registration process: Sign up as directed and ensure you opt into any available promotions that suit your gameplay.
• Reach out to customer service: If anything isn’t working as expected, contact customer support for assistance.
• Understand bonus claiming: Read our guide on how to claim bonuses effectively to avoid the common pitfalls that can lead to bonus cancellation.

Once you’ve selected a casino, it’s important to verify the payout percentage of the slot games you plan to play. The RTP rate indicates how much a game pays back to players over time, and higher percentages mean better chances for returns. UK-regulated casinos are required to display this information, so be sure to locate it on the game’s details page.

To further ensure that your gaming sessions are fair, check for third-party testing agencies, such as eCOGRA or iTech Labs. These agencies are continuously testing and auditing casino games for their RTP and randomness. This way, you will feel confident when playing at a legitimate platform with unaltered outcomes.

What is The Best Casino App For Real Money?

LeoVegas is the best payout casino in the UK for mobile, with top-rated Android and iOS apps.

Best Leovegas mobile features

• LeoVegas is one of the best and most awarded mobile casino sites in the UK.
• The operator provides no wagering bonuses on sign up.
• All payment conditions are either standard or better than average.

A new 2025 mobile app may have better graphics and more up-to-date designs than LeoVegas. The number of mobile slots may also be higher. Make sure you explore the alternatives so you make the best decision.

Top 20 Best Payout Online Slots UK

The higher the RTP, the better the payout of your slots and the more favourable odds for you as a player rather than the house.

We found the top-paying UK online slots listed that offer some of the most generous payout rates you can find, often surpassing 96% RTP. This makes them the best choice for signup bonuses. We also point you to the provider and the best paying online casino where you can find each slot game to play on a licensed casino in the United Kingdom. Spin through to find out!

Ugga Bugga slot – UK’s best payout casino slot

• 3×1 slot layout is less frequent on the market.
• The game has 10 paylines or 1 pay line per section.
• You can bet between £0.1 and £50.
• The game has low volatility.

Do online casinos have better odds for slots?

Brick-and-mortar casinos have slots with RTP rates ranging from 75% to 85%. The lowest online slots usually go to is 88%. Plus, casinos with the highest slots payouts will feature titles with 99% RTP rates or above.

Keep in mind that the best new 2025 slots sites we picked will often feature games with high RTP levels in order to attract new players.

What is RTP, and How Can It Create Better Payouts?

Payout percentages refer to the theoretical percentage of a casino game’s overall wagered money that will pay back to players over time. Each game’s payout rate contributes to the overall payout percentage of an online casino, whether we talk about slots, blackjack, or roulette.

Payout percentages are also known as “RTP”, which is “return to player” and refers to the payout percentage built into a casino game. It is generated by the game’s random number generator (RNG) software to pay out winnings at the rate advertised

RTP directly impacts your long-term payouts.

If a slot has an RTP of 95%, it means that for every £100 wagered on the game, £95 will be paid back to players as winnings over a long period of play. The remaining £5 is kept by the casino as profit.

The higher the payout percentage, the lower the house edge, and the better the odds for players. Even small RTP differences between games make a significant impact over many bets. For example:

• Age of the Gods by Playtech has 95% RTP
• Blood Suckers by Netent has 98% RTP

Over 100,000 spins, Blood Suckers will pay out £3,000 more than Age of the Gods on average. However, one is a progressive jackpot slot and the other is a low volatility slot, which means it’s not always the highest RTP that boosts your payouts.

RTP does not influence individual spin outcomes.

• For slots, the RTP usually accounts for millions of spins over time.
• For table games, it represents the mathematical return to perfect play.

Many factors influence RTP rates, like the game rules, bet range, hit frequency, and bonus features.

Can online casinos modify game RTPs?

Online casinos can modify the RTPs of certain slot games. For example, some progressive jackpot slots by IGT may have custom RTPs. Still, the best payout online casinos keep them high to attract players.

Despite RTP percentages slowly becoming a thing of the past in the UK industry, players still use them to compare theoretical game odds. The UKGC itself monitors live RTPs to compare with the advertised values.

Lowest House Edge Casino Games

The house edge denotes the percentage of each stake (won or lost) kept by the casino. It presents the statistical advantage built into any casino game. The RTP (return to player) is the flip side of the house edge and means the long-term expected payback percentage to the player.

The lowest house edge casino games are equivalent to the highest-RTP slots, so here is a table of the best payout casino games:

What is the best payout casino game?

Poker has the smallest house edge, making it the first among best payout casino games.

However, the game has a competitive side and considerable theory to learn. Blackjack is similar, but its fundamental strategy is easier to understand. Plus, it comes with some perks, including blackjack bonuses, given its popularity. Online craps comes in third, but it often proves to be intimidating for new players.

Slots are fourth, and this is the case only for the best paying slots with a 99% payout rate.

Top Providers You Can Find at The Best Payout Casinos

Best payout online slots UK are those provided by high-quality game providers such as NetEnt.

We prioritise trusted game providers that have high-RTP slogs, high average payout percentage, trusted certifications from verification agencies, and as history to prove their fairness:

Beyond legal requirements, we aim to provide the most customer-friendly options. Hence, we will rate a casino with best payout games higher if it also provides variety and volume.

Where can you find the highest-paying games by top providers?

Browse our lists for quick access to top provider casinos which host your favourite games:

1. Microgaming casinos
2. Play’n Go casinos
3. NetEnt online casinos
4. Playtech casinos
5. IGT casinos

How to Enhance Your Casino Payouts?

After you find your best payout online casino UK and pick a casino game, applying these tips will further enhance your experience:

Learn RTP basics

The return to player rate shows the amount you can theoretically expect a game to return to you as a fraction of your wagered money.

Mechanic slots used to have complicated contraptions that reproduced the odds given by the RTP rate, with some error. Error that became quickly exploitable, especially during malfunctions, on purpose or not.

However, you can rest assured. All online titles, including the top slots from the best payout casinos we picked in our top 20 table use RNGs or random number generators to accurately simulate your chances and expected return.

Understand volatility along RTP

RTP reveals the theoretical payouts, but volatility shows how often you’ll win:

• Higher volatility slots like Book of Dead pay out less frequently yet offer bigger payouts.
• Lower volatility slots like Starburst provide smaller wins more consistently.

Play skill-based games

You have minimal control of the payouts from slots. However, certain games like blackjack offer betting strategies that, while not foolproof, can minimise losses. In table games, there is an element of luck you can hinge on to increase the payout.

Choose high RTP slots

If you still intend on playing slots, you should at least go for the best-paying slots. Additionally, look through the casinos with the highest slots payouts for titles with lower volatilities. This will ensure a prolonged playtime.

Look out for high paying welcome bonuses

Bonus terms dramatically impact your actual payouts, so it’s best to start with a potentially high payout bonus.

The best payout casinos’ welcome bonuses have low wagering and high max payout rates.

Seek low wagering requirements like 20x rather than 60x, which are brutal to clear. Also, watch for uncapped bonus winnings. For example, a bonus where you can only cash out 2x your bonus amount may translate into a limited payout even before you start playing.

Diversify games and casinos to increase your payouts

Sticking to one “lucky” game or site is limiting, often causing big losses chasing past wins. That’s why KingCasinoBonus expert Ionut Catalin Marin advises you to play varied games across multiple reputable, high-RTP casinos.

That’s how you get exposed to more payout opportunities!

Apply bankroll management for long-term payouts

Bankroll management is critical for long-term payout success. You should practice responsible bankroll management because chasing your losses often leads to overspending.

It’s important to know when to stop playing, even if you’re on a winning streak. Our experts recommend setting a strict gambling budget and stopping once you hit your loss limit, regardless of game outcomes.

Does Your Payment Method Influence Your Payouts?

Payment methods have nothing to do with your odds of winning or game payout rates. Your chosen payment method can only influence your payout amount, not the game payout percentage.

Your payout amount has the fees deducted and/or other casino commissions, depending on your chosen payment processor’s policy and the casino terms. Here is a helpful overview that might help you choose your payment method more wisely:

However, based on our experience, the best casino payout method for speed comes from PayPal. So, if you encounter PayPal casinos you should know that you can experience one of the best casino payouts based on speed and security.

Our Verdict on the UK’s Best Payout Casinos

KingCasinoBonus.uk experts help you identify online casinos with the highest game payouts you can trust. Our experts vet the RTPs and odds to separate hype from reality, yet the games’ RTP doesn’t tell the full story – it would have been too easy this way. The key takeaway from this article is that the higher the RTP, the higher the payout. Still, when choosing the best payout casino games, you should always account for factors like volatility, bonus wagering requirements and game variants.

Pros

• The best-paying casinos we recommend consistently deliver the best odds verified through extensive testing by eCogra and similar agencies.
• Their game libraries are stacked with certified +96.5% slots and blackjack and roulette variants, delivering maximum payout potential.
• Expect elite studios like NetEnt and Microgaming to serve up slot games with the highest RTPs.

Cons

• Playing high-RTP games on the best payout casinos doesn’t guarantee winning outcomes.
• Some high payout percentage games are excluded from bonus play.