Best Payout Online Slots With High RTP (up to 98%)

When you are looking to land a big win while playing slots, it is always a smart idea to choose a game that has a high Return to Player (RTP) rate. This is because the higher the RTP, the bigger the win with the same being true in reverse.

The only downside being that with higher RTP slots, as big as the wins can be, is that they are far more erratically awarded. Lower paying slots tend to pay out on a much more regular basis, just in smaller amounts.

The online slot machines with a higher RTP are often classed as being progressive jackpot slots. With progressive slots, a percentage of each bet makes a contribution to the overall jackpot. And a bit like a lottery, the prizepool continues to swell with each rollover.

However, the odds of winning a progressive jackpot over a lotto jackpot are more favourably balanced in your direction.

As a general rule, slots with a percentage of less than 93.99% are considered to have a low RTP. Any slots that have a variance ranging between 94-96.99% is considered to be medium and slots with an RTP percentage of 97% or more are considered to be high.

Some of the biggest pay outs ever on record have been won through games produced and released by the Microgaming studio. The biggest ever jackpot pay out in the UK on an online slot machine is £13,209,300. This was paid out on Microgaming’s Mega Moolah slot in 2015.

In terms of RTP percentages, they don’t come much higher than 99% which is the RTP of the NetEnt slot Mega Joker.

Featuring mermaids, lobsters, ships and more, 1429 Uncharted Seas from Thunderkick is a nautically themed slot that can pay out up to 50 X your original stake. This game has an RTP of 98.6% and is available to play at Betfred. Another good RTP slot is Rainbow Riches Pick ‘n’ Mix which can be played and enjoyed at bet365 casino. Rainbow Riches Pick and Mix is an online slot made by Barcrest that’s part of their Rainbow Riches series featuring a whole bunch of sequels to their original Rainbow Riches game. This particular release has an RTP rate of 98%.

This best payout online slots UK guide helps you identify which online casino sites offer the best payout percentages for slots, allowing you to make informed decisions about where to play to maximize your chances of winning real money.

Each site is recognized for its high RTP and other player-friendly features like quick withdrawals and reliable gaming experiences.

These sites are renowned for offering some of the best payout slots in the industry. Enjoy low-house edge roulette and slots with RTPs over 96%. Bet365 Casino and 10bet are the best, or better to say, the highest payout casinos in the UK as of 2024.

You can even check the casino’s audited payouts for the best bonus deals. Spin at an online casino where they offer an easy withdrawal process; check out these sites.

Top 10 High RTP Slots

Which are the best payout casinos and ultimate sites for online slot gameplay in the UK? Our top recommendations include Spin Rio, bet365 slots, Grosvenor, Amber Spins, and the new Vic site through the bonus code VICGMBLR.

What are the best payout slots sites available in the UK?

The Best Payout Online Casinos for Slots

Are you searching for the highest return, or perhaps the thrill of chasing the largest jackpots appeals more to you?

The best online slots in the UK, renowned for their high RTP (Return to Player), can be found in four main types: 3-reel classics, multi-reel, video slots, and progressive jackpot slots.

These games feature diverse pay lines, ranging from 25 to 100, and come packed with bonus features, 3D animations, and more. For example, the Secrets of Atlantis game is one of those lucrative slots that offers an RTP of 97.07% and it is highly immersive.

All of these high-paying real money games are available across desktop and mobile sites, compatible with iOS and Android devices.

Discover the top UK casinos offering slots with high RTP and generous promotions, from 100 free spins to up to £500 in deposit bonuses. Here’s where to find the best payout slots and exciting bonuses:

UK Sites With The Best Payout Online Slots and Bonuses

Win more with top slot bonuses — Discover up to 1500+ free spins from our curated list of top 20 sites.

Always review the terms and conditions of each bonus offer, as they typically require a minimum deposit and include wagering requirements. So, for example, as you can see from above Magical Vegas and bet365 carry bonus codes which you must input in order to collect the deal.

Play slots at the best UK bonus sites with high RTP that offer good promos: from 100 spins to up to £500 in deposit bonus. There were a few titles missing off the list, such as Starmania and Medusa Megaways, but the slots we have listed below are among the highest RTP slots out there on the market.

Highlighted Top RTP Slots

Note: RTP % indicates the expected payout for every £100 wagered. Higher RTPs provide better value for the player. New slot sites like Moon Games and Vegas Spins offer high payout slots and promotions like up to 777 Free spins.

Blood Sucker

This vampire-themed classic from NetEnt boasts a 98% RTP and is a low-volatility favourite for punters everywhere. There are 5 reels and a 1,014x maximum win. This game is stocked in the bet365 lobby, and once you have played this, there are a few other similar titles that might generate interest, such as Blood Shadow, Wild Blood and Wild Blood II.

Back to Blood Suckers, and if you match three or more symbols across one of the twenty-five fixed pay lines, you will land a win. The famous Vampire Slaying Round is unlocked when you land 3 of the stake and hammer bonus symbols. A gory, ghoulish giant of the genre and great value!

Ugga Bugga

Ugga Bugga from Playtech has a good 99.07% RTP and has an unusual setup. 10 sections, each with 3 symbols, give the game a unique feel. The only way to win is to line up 3 of the same symbols in one section. So essentially, you get 10 times to win every spin.

There are chances to hold and spin, giving Ugga Bugga a pleasant retro feel. Symbols include masks, drums and hats. There is no jackpot, and volatility is low, but Ugga Bugga offers new punters fantastic value and a great foothold in the online casino door.

Mega Joker

Another NetEnt creation, this all-time favourite has a staggering 99% RTP. The background and general feel is camp and fun, with potted palms and vintage wallpaper added to the gaiety.  Symbols include the classic cherries, bells and watermelons. The minimum bet is anything from 1p to £2, so Mega Joker will suit all comers. Available at all reliable casinos, including Rialto, this has quickly become a fan favourite.

A Super Metre Mode allows you to bet up to 200x your coin value per spin. 

Thunderstruck 2

This high RTP slot from Microgaming has a 96.65 RTP% and is set across 5 reels and 3 rows. Bonus features like Wild Storms and the Great Hall of Spins can help you reach a maximum win of 8,100x. The theme covered is Norse mythology, so don’t be surprised to see Thor pop up and cause mayhem.

Book of Ra Deluxe

One of the best payout online slots by Novomatic is another for-the-ages game that pops up everywhere, with a highly respectable 96% RTP. Design-wise, it is a classic 5-reel, 3-row, 10-payline set-up, and punters have fallen for the Egyptian-themed design, replete with symbols of scarab beetles, pharaohs and Horus.

The Bonus round contains the Expanding Symbol that can cover three symbol positions. You’ll go ga-ga for Book of Ra Deluxe which can be played at most online casinos, including All British Casino.

Jokerizer

This slot with a fast payout percentage comes from the Yggdrasil stable and has an RPR of up to 98%. Carnival-based Jokerizer comes in 22 languages and has an enhanced portrait mode for mobile devices, making it ideal for gaming on the go. It is high-volatility, has a maximum win of £60,000, and you only need 2 Jokers for the mystery win in bonus mode.

Undoubtedly a cheeky classic that continues to resonate to this very day.

Wild Cauldron (Quickspin)

Among the best payout online slots in the UK, the Wild Cauldron game arrived in 2020 and is a 6-reel, 4-row dream with 4,096 ways to win. The RTP % of 96.06 is not too shabby either.

Play the bonus round, and you can expand the game to 8 rows and over 200,000 ways to win! Look out for monsters and potions in this bubbling beauty.

White Rabbit Megaways

The next fast payout slot title by Big Time Gaming is a trip into Alice in Wonderland world and has a very decent 97.77 RTP %. With potentially over 240,000 pay lines, this high-volatility thrill ride takes you through the looking glass. The reels are full of grinning Chesire Cats and the Queen of Hearts. Curiouser and curiouser. Here is a list of the best Megaways slot sites.

Dead or Alive 2

This is a new riff (2019) on the gunslinger classic from NetEnt, with a very decent RTP % of 96.82. It is only a 5-reel, 3-row structure with 9 pay lines, but it can pack an over 111,000x pay-out punch. There are scatter wins, sticky wilds and the famous High Noon Saloon and Train Heist Free Spin games. 

Buffalo King

Looking for the top payout online slots UK casinos can offer? This is another wild-west classic from Pragmatic Play. With an RTP % of 96.06, punters love the option of personalising their game via the player interface. There are 6-reels, 4-rows, and stakes can range between 40p and £60.

The graphics and vividness of the background are superbly rendered, and Eagles, coyotes, and cougars abound in this high-volatility thriller. Mr Play has stocked a few versions of this, including the originals and Megaways incarnation, so check them out!

Blazing Bison Gold Blitz: High Volatility & Rich Features

Blazing Bison Gold Blitz is a high-volatility video slot, providing an opportunity for massive wins, although they may be less frequent. It offers six reels with a whopping 4096 ways to win. With an RTP of 96.00%, this game provides a favourable return rate. The real attraction, however, is the game’s features. Wild symbols can substitute for other symbols to create winning combinations, and Free Spins offer more chances to win without additional stakes.

Cleopatra: Balancing Frequency & Features

Cleopatra presents a medium volatility video game, balancing frequency and size of wins. It features five reels and 20 pay lines, with an RTP of 95.02%. Cleopatra video slot also offers several exciting features. Multipliers can exponentially increase your wins, Free Spins provide additional chances to win without extra bets, and Wilds can fill in for other symbols to create winning combinations.

The best gambling websites for playing video slots on our list are: Unibet, bet365, Spin Rio, Videoslots.com and GrosvenorCasinos.

Who Wants to be a Millionaire Megaways: Massive Wins and Engaging Gameplay

For those who enjoy the thrill of chasing substantial rewards, Who Wants to be a Millionaire Megaways is an excellent video slot for real money at bet365 Games.

This high volatility slot offers 117,649 ways to win across six reels. Its Return to player payout rate is a commendable 96.24%, featuring exciting Megaways, Scatter Feature, and Wilds.

Rainbow Riches: Medium Volatility Slot with a Taste of Luck

Rainbow Riches is a medium volatility slot offering frequent wins. With 20 paylines on 5 reels and an RTP of 95.00%, it ensures that every spin is filled with possibilities. The game also offers Free Spins as an additional feature, enhancing the gaming experience.

Where to play? Visit Spin and Rio or play slots at new sites like Winomania (with free spins).

How RTPs Are Determined

Every licensed UK online casino has a payout percentage programmed into the game. This figure is theoretical and based on millions of spins over time.

For instance, a slot with an RTP of 97% will pay out on average £97 for every £100 paid in. The casino keeps the remainder. In this case, the casino would keep £3 of every £100 bet on that particular slot. Read about some slot strategies that may help you increase your chances of winning.

The best online slot sites only feature games with high payout percentages. Bet365, Betfred, and 10Bet are among the best payout casinos in the UK. You might find bonus slots with RTPs of 98% or big-money progressive jackpots that pay out huge sums. They also offer apps, several popular payment methods and bonuses to new customers.

Best Real Money Progressive Jackpot Slots in the UK

Progressive jackpots offer slot players the chance to win millions of pounds on a single spin. Progressives are 100% legal in the UK, and the best online casinos offer a great range of games to play for real money. Discover why UK gamblers love progressive slots in 2024.

We’ll even show you which great casinos offer big prizes, especially on daily jackpot titles.

Online slots usually have a fixed jackpot, which you can win by hitting five-of-a-kind or triggering a bonus feature. Progressive slots are different—they have a jackpot that keeps climbing until one player takes it down.

Progressive real money slots are usually linked across multiple online casinos. Every time you play, a tiny fraction of your stake is added to the jackpot pool. The remainder goes towards playing the slot itself. The more casinos that share a game, the bigger the jackpot gets.

Plus, some progressive jackpot slots share the same prize pool.

• Standalone Progressive Slots: A standalone progressive is a single slot that offers an exclusive jackpot. You’ll have to play that slot at a particular casino to win the big one.
• Progressive Slots Series: Some developers offer a series of progressive slots that all share a single jackpot. In games like Playtech’s Age of the Gods series, you can win one of four separate jackpots depending on how the bonus game pans out.

Popular progressive online slots series include:

• Age of the Gods Mystery Jackpot (Playtech)
  Games include: Age of the Gods, Age of the Gods Medusa & Monsters, Age of the Gods Epic Troy
• PowerPlay Jackpot (Playtech)
  Slots include: Book of Kings PowerPlay Jackpot, Blazing Bells PowerPlay Jackpot, Storms of Ice PowerPlay Jackpot
• DC Super Heroes (Playtech)
  Games include: Justice League, Batman and Catwoman Cash, Superman

Where to play top payout slots online: best sites listed (UK)

• Spin Rio – use BGRIO
• bet365 Games – 365GMBLR
• Grosvenor Slots
• The Vic
• 10bet Casino
• Spin and Win – Known for fast payouts
• Barz Casino
• Mr.Play Slots
• Winomania
• Pub Casino – Best new slot site in the UK

Disclaimer: Please note that RTP can vary and is subject to change; we are not responsible for updates or modifications made by third parties.

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