Highest Payout Online Slot Machines

Best IGT Slots By Payout Percentage Whereas the brand names of the world’s leading online casinos are widely known, the names of the companies which supply those casinos with software and games are often a mystery even to the biggest online gambling fans.

The thrill of slots lies in the potential for a big payout. Whether you’re looking for the big jackpot or trying to grind out a steady profit, it’s what the machine gives you back that’s the most important. But are all slot machine payouts equal? Is there any truth to the myth that some games are more generous than others? If you’ve ever asked yourself these questions, then you’ve come to the right place.

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On this page, we’ll go over the best payout slots in the UK today, plus tell you exactly how you can check the slots payout ratio of any game you come across. Remember, the UK gambling scene is completely licensed and regulated. Consequently, casinos must be transparent about how much money they are making and paying back out in jackpots and winnings. The information is not always sitting right in front of your nose, but it is there to find if you know where to look.

Slot Machine Payouts – In a Nutshell

So how exactly does a slot payout ratio work? The amount that a slot machine pays out can, and is, calculated by both casinos and regulators. Modern online slots call this value RTP – or return-to-player. The figure is given as a percentage and is used to provide customers with an accurate prediction of how much of the money staked on a game is paid out in prizes. There are a couple of things you need to understand about RTPs, however, before you wander off in search of the highest rate.

RTPs are theoretical. We cannot stress this enough. If you find a game with a reported theoretical RTP of 98%, it does not mean you are guaranteed to have 98% of your stake returned in a single gaming session. Sometimes, you can find data for actual RTP rates. Actual RTPs are more accurate than theoretical ones, but it’s important to realise that they represent the rate of payouts in the past, and do not necessarily reflect what that machine will pay out in the future.

Let’s look at an example to better explain how RTP is calculated in the online casino industry. Say, for example, that you are playing a slot that had one payline, and the chance of winning on that payline is equal for every spin you take. If, after staking a single coin on 10 spins, you have received a total of 9 coins in return, your actual RTP would be 90%. Sounds simple, right? Now consider that some modern slot games have more than 200, unequally likely ways to win. Calculating an RTP by yourself is impossible over 10 spins, never mind the millions of spins that are used to produce the data that is available to players today.

Types of Slots and Their Payout Ratios

Technological advancements in digital gaming and the switch to software-based slot machines somewhat diversified the market. As a result, it’s easier to categorise our favourite slot games into four main groups to differentiate between the what is a typical RTP and how to spot a bad one.

Progressive Jackpot Slots

There’s no doubting that progressive jackpot slots are the headline acts of this market. Progressive jackpots are the result of thousands of players working together to build big prizes at ridiculous speeds. Slots that have a progressive jackpot are linked together across several games, casinos and even countries. As a result, the RTP of these games tends to be on the low side.

A game like Mega Moolah, for example, has an RTP of around 88%. However, this is countered by the fact that when it pays, it pays big.

Classic Slots

Classic slots that stick to the traditional fruit machine formula tend to have what we call ‘fixed jackpots’. This means that the largest prize does not change regardless of how many people around the world are losing money on it. As a result, the base payout ratios of these games tend to be a little higher than a progressive jackpot slot.

A classic slot such as Jackpot 600, for example, has an RTP between 95.1% and 98.9%. These slots payouts won’t make you an overnight millionaire but are perfect for longer playing sessions.

Video Slots

Video slots are modern incarnations of classic slots. They vary in style, formats and payout ratios, but in general when we refer to video slots, we mean the computer-generated, video-gaming-looking games such as Gonzo’s Quest. There’s really no general rule for RTPs with these games, given the openness of the way they are designed.

A video slot can have one payline or 243, and the slots payout ratios vary in much the same way. The best thing to do is check the RTP of the game – by searching through the help sections – before you begin to spin.

Franchise Slots

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Today’s online slots market is filled with popular franchise slot machine from your favourite TV shows and Hollywood movies. The franchise model really came to life with the rise and fall of the Marvel slots. Despite Disney pulling the plug of the superhero games that proved such a big hit, the Marvel games proved that franchise slots had a place in this market.

Today, games such as Universal Studios’ Psycho and Game of Thrones reign supreme. These games tend to have a lower payout ratio than non-licensed slots due to the higher costs to software providers or using the official characters and branding.

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How to Find the Best Payout Slots

Depending on whether you play slots offline or online, these casino games of chance can have lower or higher payout ratios. In terms of differences between software provides, there tends to be very little. Choosing a software provider is a matter of game preference and experience, rather than favourable RTPs. The same goes for mobile games. The payout ratio of a mobile slot is the same as it is when you play it on desktop. Slots payout ratios are particularly important if you are planning on playing slots for high-stakes, as you’ll want to find the best RTP possible to protect your significant risk.

If you want to check the slot payouts of online casinos for yourself, search the online casino site for possible reports from independent auditing firms. You can check the slot payouts at each casino by looking for reports from Technical Systems Testing (TST), a Gaming Laboratories International third-party auditing company. The company tests electronic gaming equipment and makes sure it produces random results. Regarding slots, it conducts rigorous tests on their RNG and ensures it creates fair outcomes. You can also look for reports from eCOGRA, an independent and internationally recognised testing company established in 2003 and based in the United Kingdom. The agency specialises in the certification of online gaming software and systems and some of its activities focus on fair gaming by evaluating the RNG and RTP of games, providing secure and safe gaming environment and preventing underaged and vulnerable players from gambling. Online casinos usually offer reports from TST or eCOGRA on their websites and display seals of approval on their homepages.

Discover Top Online Casino Slot Payouts

The competition in the online slots market is so intense that software developers and casinos are scrambling to create games that offer the best payout ratios possible, whilst still generating profit for the operators. Modern online casino fans are savvy, and gambling companies know this. RTP is becoming more and more of a common term amongst even casual fans, and we predict it will be a more prominent unique selling point for new games in the future.

A common question we get asked when talking to slots players on this subject is: Do some online casinos have better payout slots compared to others? The short answer is no. The payout rates are determined by the software provider. These RTPs are audited by third party companies and companies can get into big trouble for messing around with the random number generator or the game’s inner workings after it has been certified as fair and safe. One thing that can change from casino to casino, though, is the maximum bet and/or coin limits. These do not directly affect the percentage payout rate, though. It’s also worth remembering that even games that can be found both online and offline will not have the same payouts.

Where Are the Best Land-Based Casino Slot Payouts?

Bricks and mortar casinos work differently from online casinos in terms of operation, functionality and many other factors. When it comes to their payout ratios, at land-based casinos they are roughly between 84% 86% and they are calculated based on restrictions such as costs of development and manufacturing as well as costs of the massive overhead. These costs leave a big cut for bricks-and-mortar casinos and therefore, they have to offer lower payout ratios than those of Internet casinos to stay afloat.

For online casinos, the payout ratios of slots are much different. They are much higher or approximately between 90% and 97%. The biggest reason behind this is that the costs associated with running an online casino site are lower than the costs of running a land-based casino. Expenses connected with massive overheads or manufacturing are irrelevant for online casinos so no wonder why the payout ratios of games are higher. You can find land-based casino slots at any major high-street casino. Today, you’ll even find popular online games at your local branch. However, do be aware that despite the gameplay being the same, the payout ratio will be lower than it is online.

Curious Payout-Related Behaviour at Land-Based Casinos

There are some curious behaviour patterns that we’ve observed when playing land-based slots. There’s no telling how well these tricks and ‘hacks’ work – while some are simply quirky and potentially good for thwarting off boredom at a brick and mortar gambling joint, some verge on misleading superstitions. We’ve summarised our favourites below.

  • Timing the machine: Some punters monitor a slot for when it pays-out, and dive in after a certain amount of time has passed
  • Popularity contest: If others are staying away, the logic goes that it is for good reason
  • Identifying patterns: Loitering around a slot, watching others play, and noting down the payout frequency
  • Rotation: Avoiding sticking at the same machine because it surely must payout soon!
  • High-limits: Punters pick slots that require higher wagers, but have higher payouts

It Is All Really Worth the Effort?

The important thing to take away from this guide to payout ratios is that nothing is permanent in this fast-moving market. The only way to really stay on top of the game is to take an interest in the industry as a whole. The best way to find the absolute highest RTP possible is to check out plenty of slots games and casino reviews. The other option, of course, is to forget about RTPs, payout ratios and all that technical stuff, and to just play the games and have fun. Remember, even the best payout slots ratio imaginable is still going to favour the house. With that in mind, it might be better to just enjoy the ride, have fun, and forget about trying to maximise your winnings. At the end of the day, whether you win or lose comes down to luck, just as it always has, and always will.

Whilst many people decide which slot to play based on the theme, special features or promotional offers, the savvy gamblers steer towards slots with the highest RTP. The house edge of online slot machines can vary widely, and it stands to reason that the lower the house edge, the better your chances of winning.

Top RTP SlotsRTPBet LimitsFree SpinsPaylinesRowsReels
Jack Hammer 297.10%£0.50 – £25010-2099315
Simsalabim97.50%£0.25 – £125Yes2535
Retro Reels Extreme Heat97.50%£0.30 – £112.50Up to 203035
Devil’s Delight97.60%£0.20 – £40Yes2035
Kings of Chicago97.80%£0.05 – £50Up to 30535
Starmania97.87%£0.10 – £20101035
Blood Suckers98.00%£0.25 – £50102535
1429 Uncharted Seas98.60%£0.10 – £100255035
Jackpot 600095.10 – 98.90%£1 – £2No533
Mega Joker99%£1 – £5No533

Of course, you should keep in mind that only the best slot sites to win offer high payout games from which you can take advantage. The return to player percentage of a game is measured over thousands of game rounds, and it stands to reason that the higher the RTP, the better the deal for the player. With this in mind, I have decided to create a list of the 10 online slots with the highest RTP.

#10 Jack Hammer 2 (NetEnt) – 97.1% RTP

Jack Hammer 2 is the first of many NetEnt slots to make this top 10 list. This entertaining slot has a crime and adventure theme, captured in a comic book style. There are an impressive 99 bet lines in this game, providing plenty of opportunities to win. It also boasts a variety of interesting features that make the game exciting to play, whilst creating chances to win. The Sticky Win feature sees any winning symbol combinations held in place for a free re-spin, and they continue until no new wins are created. There is also a free spin feature, where you get up to 20 free plays, where all wins are doubled and extra wilds randomly land on the reels. Jack Hammer 2 has a player-friendly RTP of 97.1%

#9 Simsalabim (NetEnt) – 97.5% RTP

This magical themed slot recreates all the excitement of a magic show. The stage is set, with symbols such as a magician’s wand and top hat, a caged dove and a Houdini-style chained chest. The hypnotist is wild, helping to complete winning symbol combinations. When you play Simsalabim, keep your eyes peeled for 3 bunny rabbit symbols on the first 3 reels. These trigger the bonus game, where you pull rabbits from the hats to reveal cash prizes of up to 50500 coins. The slot also features a free spins round, which provides the potential for big wins thanks to the triple payouts. All these features combine to provide a great RTP of 97.5%.

#8 Retro Reels Extreme Heat (Microgaming) – 97.5% RTP

The RTP of 97.5% is one of the highest you will find in the Microgaming slots selection.Retro Reels Extreme Heat has an old-school feel, with symbols you’d expect to see on a classic fruit machine, including cherries, lemons, bells, bars and 7’s. At the same time as providing a retro feel, it includes many features which you’d expect from a modern video slot. There is a free spin bonus, where you can get up to 20 free plays with all wins doubled. There are also wild substitutions and scatter pays. A highlight is the innovative re-spin feature. After any spin, you can choose to spin just one reel, which allows increased chances of winning.

#7 Devil’s Delight (NetEnt) – 97.6% RTP

Unleash your inner devil in this NetEnt video slot. Set against a fiery backdrop and tombstones, the 5 reels are filled with symbols from the underworld.Devil’s Delight is packed full of exciting features that provide plenty of chances to stack up the wins. The devil wild expands to cover entire reels. Whilst the free spins bonus features win multipliers of up to x5. Yet the real highlight of the game is the unique Soul Reaper bonus game. Match the correct sin to each character their soul will be added to the Soul-O-Meter whilst you reap a coin prize. When the Soul-O-Meter is filled with 15 souls, the Sin Spins feature is activated. Here, you get 10 Sin Spins where you can pocket some juicy rewards. With so many cool features and a high RTP of 97.6%, this is one hell of a slot!

#6 Kings of Chicago (NetEnt) – 97.8% RTP

Highest paying slot machines

Kings of Chicago mixes the best elements of a video slot with classic poker. The game is played with a deck of cards, which is shuffled before each round. Unlike normal slot machines, where payouts are made for matching symbols across paylines, in this slot, you win if you have a poker hand on one of the five paylines. The game includes a joker, which substitutes for all cards. Plus, the scatter label can randomly appear on any card. Get 3 or more and free deals, the equivalent of free spins are triggered. You can bag up to 30 free deals in the special feature and all wins are doubled. This innovative slot machine provides a unique twist on what you expect from a video slot, and boasts an impressive RTP of 97.8%.

#5 Starmania (NextGen) – 97.87% RTP

With colourful star symbols set against a pretty outer space background and a spacey, ethereal soundtrack, this NextGen slot is a real treat for the senses. Wilds are stacked onto the reels boosting your shot at winning combinations. There is also a free games feature, where extra stacked wilds can help create some big wins. The game features 10 paylines and wins are paid in both directions. With every line win, you also have the option to gamble your prize, for a chance to double or even quadruple your win multiple times. The great graphics, exciting features and favourable RTP of 97.87% make Starmania a real hit with players.

#4 Blood Suckers (NetEnt) – 98% RTP

The vampire genre has never been more popular, and it is the inspiration for this spooky NetEnt slot. You’ll see various Blood Suckers adorning the reels, along with the weapons to fight them off. It is not merely the impressive 98% RTP that draws players to this slot, but also the rich selection of special features. There are wild substitutions, scatter pays, free spins with triple payouts and a vampire slaying bonus game. Trigger the bonus and you will find yourself in an ancient burial chamber, filled with coffins. Open the coffins to slay vampires, earning coin wins with each creature you defeat.

#3 1429 Uncharted Seas (Thunderkick) – 98.6% RTP

This video slot from Thunderkick is visually stunning. The reels are replaced with a medieval style hand-drawn map and the symbols include a variety of sea creatures and beasts as well as sun, moon and star symbols. The slot includes a wild symbol which expands to cover entire reels, helping to create bigger wins. There is also a free spins bonus where you can earn up to 50 free goes. 1429 Unchartered Seas has a rewarding RTP of 98.6%, one of the highest you will find in a video slot, making it a popular choice with players.

#2 Jackpot 6000 (NetEnt) – Up to 98.8% RTP

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Jackpot 6000 is a thrilling classic slot machine from NetEnt with a real old-school vibe. You can play with up to 5 paylines active, betting between 1 and 10 coins per spin. It is highly recommended to play with the maximum bet of 10 coins however, as this creates the possibility of triggering Supermeter mode. In this game mode, you can win a mystery prize of between 10 – 6000 coins when just 2 joker symbols land anywhere on the reels. Also, getting 3 jokers on a payline in Supermeter mode guarantees a jackpot payout of 6000 coins. When you play Jackpot 6000 with 1 – 8 coins, the RTP is a paltry 74.9% – 79.2%. Yet with 10 coins in play, the RTP ranges from 95.1% – 98.8%. The variance is because Supermeter mode is skill based, so you can directly impact the outcome.

#1 Mega Joker (NetEnt) – Up to 99% RTP

Whilst Jackpot 6000 boasts an extremely high RTP, it is just beaten to the top spot by another NetEnt classic slot; Mega Joker. Bet with just 1 coin and the RTP is an underwhelming 76.9%. Yet on the other hand, a max bet of 10 coins elevates the RTP to between 89.1% – 99%. Furthermore, it provides bigger payouts and the Supermeter mode. In Supermeter mode, you need to choose the bet level and the optimum level at which to collect your winnings. It is this element of skill which can increase the RTP. The skill component, retro style and engaging gameplay make Mega Joker a firm favourite with players.

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Frequently Asked Questions

Because our goal is to keep you well informed we have put together a list of the most frequently asked questions and our team of experts has provided the answers below.

🏆 What are the best paying slots?

The best paying slots are the ones that feature a high RTP because that translates to a small house edge such as NetEnt’s Jack Hammer 2 slot or Simsalabim, with a return to player percentage of over 97%.

✍ How do I choose a good slot machine?

In choosing a good slot machine a player should look for high payouts, volatility and the features of the game itself. For example, you are bound to have a higher return on your investment while playing a slot with free spins and multipliers.

💱 What is the average payout on slot machines?

The average payout on slot machine varies among slots but you are going to find a higher return-to-player percentage in the recommended online casinos as compared to the traditional slot machines. Blood Suckers slot and 1429 Uncharted Seas slot have a very high RTP of over 98%.

🎰 What is a high variance slot machine?

High variance slots are destined for gamblers who are willing to play for huge wins.Kings of Chicago is a great example in that direction because it features not only a high RTP but also a high variance, which makes it ideal for our example. Flexible betting limits, free spins and a unique twist on slots as we know them are just a few perks of enjoying this title.

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