The popularity of slots comes as no surprise, as they are highly entertaining and can keep players engaged. Whether you enjoy a particular book, movie, or pop star, you are likely to come across at least one slot you enjoy, if not several slots that appeal to you. In addition to being fun, slots attract players because they can sometimes be extremely generous to lucky casino enthusiasts.
Even though slots have always been and continue to be games of chance, many people are willing to risk some of their money for the opportunity to win hundreds, or even millions, of dollars. For this reason, many slot aficionados pay close attention to slot payouts and choose their games carefully.
If you are interested in the payouts that slot games offer, continue reading this guide. We will help you understand slot payouts and explain how to choose the slot variants that best suit you. Keep in mind, however, that no matter how high the RTP or variance of a slot is, it is still a game of chance. If luck is not on your side, you should not expect huge wins anytime soon.
Understanding House Edge and Potential Return to Player
Whether we are talking about a land-based slot machine or you are spinning the reels of a virtual video slot, every casino game has both a house edge and a potential return. If you are curious about how a slot’s payout is determined, you should look at its hold percentage – commonly referred to as the house edge.
RTP of Online SlotsHouse Edge of Online Slots
The hold percentage represents the portion of each wager that the house (casino) retains. If you know the game’s Return to Player (RTP) percentage, you can easily calculate its house edge. Simply subtract the slot’s RTP from 100% to obtain the hold percentage for that slot variation.
If a slot has an RTP of 95%, it means that, over the long term, players can theoretically expect to receive $95 back for every $100 wagered. Accordingly, the house edge is 5%, meaning that the casino theoretically retains $5 from the same $100 in wagers.
RTP of Online Slots
The potential return of a slot indicates how much a player can expect to receive from their wagers over an extended period. RTP should not be taken too literally because it is calculated over a large number of spins.
If you play a slot with an RTP of 96%, it does not mean that you will receive exactly $0.96 for every $1 you bet. Instead, it represents a theoretical average return of $96 for every $100 wagered over many spins. Another point to remember is that a slot’s RTP often depends on whether you place the maximum bet or choose smaller stakes. In such cases, the highest possible return is usually calculated based on the maximum bet a player can make on each spin.
- Slots Rules
- Classic Slots
- Video Slots
- Best Paying Slots
- High Stakes Slots
- Progressive Jackpot Slots
- iOS Slots Apps
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- Aussie Slots
- The Evolution of Slots
- Components That Make Slot Machines Tick
- Complete Breakdown of Slot Symbols
- Bonus Games in Slots
- Slot Fairness and Random Results
- How Casinos Gain Their Edge in Slots
- Slot Volatility vs. Theoretical Payback Percentages
- The Simplicity of Classic Slots
- Multi Line Video Slots
- All Ways Slots
- Megaways Slots
- Feature Buy Slots
- Branded Slots
- Progressive Slots – The Big Payers in the Casino
- Who Develops Slot Software
- The Rise of Mobile Slots
- Building Slots Bankroll
- Slot Etiquette when Playing in Landbased Casinos
- Maximizing Slot Wins
- Slot Tournaments
- Biggest Slot Wins in History
House Edge vs RTP

Express the advantage of the house over the player

Shows the potential long-term return a player may enjoy

House edge is most commonly expressed in table games

RTP is most commonly expressed in slots

The house advantage can be calculated using the game’s RTP

The slot’s RTP can be calculated using the game’s house edge
How to Calculate the RTP of a Slot
If you want to understand how much a particular slot may pay, the first statistic to check is the game’s RTP. In most cases, software providers and online casinos disclose the RTP of the slots they offer. Occasionally, however, this information is hard to find and you must rely on an alternative method.
Although RTP is calculated over a very large number of spins, you can still get a rough estimate for the slot you are currently playing. Remember that this figure applies only to your current session and does not represent the slot’s long-term RTP.
Calculating RTP for the Current Session
Things to Consider When Calculating a Game’s RTPCalculating RTP for the Current Session
The simplest way to calculate the return percentage for your slot session is to divide your total returns by the total amount staked during that session. For example, imagine a slot session in which you received $60 after wagering $50. Dividing 60 by 50 gives you a session return of 120%. Conversely, receiving $30 after wagering $50 would indicate a session return of 60%.
Things to Consider When Calculating a Game’s RTP
The method described above estimates the return percentage only for your current slot session. Calculating a slot’s overall RTP is much more difficult because numerous factors must be considered.
Estimating the overall RTP of a slot requires you to consider:
- The average number of wagers placed on the slot
- The average payout amount the slot offers
- The slot’s bonus features
- The possible winning combinations
A slot’s RTP is typically calculated over hundreds of thousands, if not millions, of spins. In addition, the game’s RTP is programmed by the slot’s developers. Because it is impractical to spend so much time and money calculating a slot’s RTP, we recommend consulting data published by software providers, online casinos, or independent slot-review websites.
Can You Trust RTP Percentages?
As noted earlier, a slot’s RTP is predetermined by the game’s software developer. Therefore, if the company lists a specific RTP on its official website, that figure represents the game’s actual RTP. Furthermore, when you play at a regulated online casino, you can typically find the RTP for every slot directly on the site.
Licensed Casinos Can be Trusted in Most Cases
One Game Can Have Several RTPsLicensed Casinos Can be Trusted in Most Cases
Online casinos licensed by reputable regulatory bodies are required to disclose the house edge or RTP of the games they offer. In addition, they must comply with applicable minimum RTP requirements and cannot adjust the house edge beyond the permitted limits.
Properly licensed casinos undergo regular audits by independent testing companies to verify that their games are fair. These audits also cover the published and actual RTPs of their games. If you cannot find a dedicated page listing the RTPs of the slots offered by an online casino, you can open the slot and check its rules or paytable section. The slot’s RTP is usually displayed there.
One Game Can Have Several RTPs
To accommodate a wider range of casino operators, software providers often release the same slots with different RTP settings. Some of these settings are lower than the highest RTP published by the provider and can mislead players who do not verify the potential return at the online casino where they play.
While some licensing bodies require their licensees to meet specific RTP requirements, others are less strict with the operators they regulate. Therefore, it is important to check the RTP of your favorite slots at the specific casino where you plan to wager real money. If this information is unavailable, you may want to consider another casino.
Online casinos licensed to operate in the UK and Sweden are required to publish the RTPs of the slots they offer and use the highest available RTP provided by the software developer. By contrast, casinos operating under licenses from Malta or other less strict jurisdictions may offer the same games with lower RTPs.
If you know that a slot’s RTP is available at other casinos but cannot find it at the casino you are visiting, you may be better off playing elsewhere. A hidden RTP makes it difficult to determine whether the casino is using a lower setting. This can significantly affect slot payouts and diminish your overall gaming experience.
For this reason, players should carefully check the RTPs of the slots they intend to play and make sure the casino offers the highest available potential return. Although the outcomes of games of chance are determined by a Random Number Generator (RNG), it is still important to know that you are playing for the best possible long-term return.
How to Choose the Right Slot According to Its Volatility
When evaluating a slot’s payouts, you should also consider its volatility. While RTP indicates your potential long-term profit, volatility – or variance – describes how often small and large payouts occur. Depending on your preferences and bankroll, one type of variance may suit you better than another.
If you enjoy riskier play, slots with higher variance may be your best choice. High-variance games award smaller wins less frequently, but after a prolonged dry spell they can deliver substantial payouts. Conversely, low-volatility slots produce small wins more regularly, yet significant payouts are rare.
Is Volatility More Important Than RTP?
Choosing Slots According to Their Volatility
Controlling the Slot’s VolatilityIs Volatility More Important Than RTP?
Although RTP rates are important when choosing slots with higher theoretical returns, you should also pay close attention to their volatility. In some cases, a game’s variance may matter more to players than its RTP.
The theoretical RTP programmed into a slot is usually achieved only after a very large number of spins. For example, data from a UKGC-licensed casino shows that, even after 50,000 spins, there can still be nearly a 5% deviation from the stated RTP. Many more spins would be needed to move closer to the true long-term return.
Therefore, choosing the slot’s highest available RTP is particularly important from a regulatory perspective. An average player, however, rarely completes enough spins to eliminate substantial deviations from the theoretical return.
For this reason, a slot’s volatility may sometimes be more important to players seeking favorable outcomes. Low-variance slots tend to award smaller wins more frequently, which can help players complete more spins and enjoy longer sessions.
Choosing Slots According to Their Volatility
If you have several days to devote to a low-risk slot, you can continue choosing games based solely on RTP. As noted above, it may take roughly 50,000 spins to approach a slot’s maximum RTP. If you are prepared to play that long, however, the experience may no longer be enjoyable.
Although low-risk slots are not ideal if you are chasing larger payouts, you should also exercise caution with high-volatility games. Players who favor riskier betting styles may lose more than others. While high-volatility slots can be tempting because of their large potential wins, extended losing streaks can quickly deplete your bankroll.
Despite the risk, high-volatility slots may appeal to players who prefer the possibility of larger payouts. Even the biggest rewards on low-variance games may not match the generous wins available from high-volatility slots.
High-volatility slots generally have a lower hit frequency. Software developers often combine higher RTPs with higher variance, making the games riskier but capable of awarding substantial payouts through bonus features and special symbols. One way to identify a high-variance slot is to check the game’s paytable. If the lowest listed payout is still much higher than those found in low-variance slots, you may have found a highly volatile option.
When you play online, you may also encounter mid-volatility slots. These games fall between the low- and high-variance categories. They may produce sessions with regular smaller wins, but they can also result in many losing spins before a major payout appears.
Controlling the Slot’s Volatility
You may not realize that you can partly influence the volatility of the slot you are playing. A player’s actions generally increase the variance, while lowering it is rarely possible.
Many video slots allow you to choose the type of bonus feature to activate. For example, you may be able to select more free spins with lower multipliers or sacrifice some free spins in exchange for higher multipliers.
One example is Betsoft’s Good Girl Bad Girl. Choosing the Good Girl mode pays wins from left to right and results in low volatility. Selecting the Bad Girl mode pays wins from right to left and produces higher variance. There is also an option that pays in both directions and offers medium volatility.
Another way to influence a slot’s volatility is by playing video slots that let you choose the number of paylines. You can increase the game’s variance by betting on fewer lines while raising your bet per line. For example, suppose you wager $0.01 on each of 30 paylines. You could instead wager $0.02 on each of 15 paylines, maintaining the same total stake while increasing the slot’s variance.
Is a Higher RTP or Higher Variance More Important?
When selecting a video slot, its volatility can be far more important than its RTP. That does not mean you should ignore the return percentage, especially when comparing the same game across different casinos. Ideally, you should always play the version with the highest RTP offered by the developer.
To tailor your slot experience to your playing style, choose games with volatility that matches your bankroll and betting habits. If you dislike risk and are not chasing massive payouts, low-variance slots can provide plenty of entertainment.
Players chasing big wins, however, will likely enjoy high-variance slots more. These games are riskier but can deliver payouts that low-risk slots seldom match. Alternatively, mid-variance slots strike a balance by reducing risk while still offering the possibility of respectable wins over time.
Paytables of Online Slots
As already mentioned, the paytable of a slot can be extremely useful, especially if you want to estimate the RTP for a single session or determine whether a slot is low or high variance. Before wagering real money on a slot you have never tried, take a moment to review its paytable.
The paytable is an essential component of every slot. It typically contains the rules, paying symbols, special icons, bonus features, and paylines.
Although paytables vary in design because developers create diverse games with unique payouts and features, the information they present is usually straightforward. The first page or top section generally showcases the symbols used in the game and their payouts.
Paying Symbols
Special Symbols and Bonus Features
Paylines and Ways to WinPaying Symbols
You will notice that some symbols offer smaller payouts, while others have higher values. The paytable also shows how many identical symbols must be matched to receive a payout. In most cases, slots pay for combinations of three or more identical symbols on a payline. Some games, however, may award a payout for just two of a kind. Payouts are usually displayed as the number of coins awarded for a winning combination. Some slot paytables may also explain that the displayed payouts represent multipliers applied to the player’s bet per line.
Special Symbols and Bonus Features
Paytables also display any special symbols that may appear in the game. Some video slots include wilds and scatters with special abilities that can trigger bonus features. If these symbols award payouts, their values will also be displayed in the paytable.
Paytables usually explain any bonus features that can be triggered during the slot’s spins. This information helps players understand what to look for while playing. If the special features are not explained in the paytable, you can also check for a “Rules” section.
Paylines and Ways to Win
The paytable usually explains how winning combinations form across a slot’s reels. It typically also notes whether the slot pays from left to right, right to left, or in both directions. Some slots offer multiple ways to win instead of awarding payouts for combinations formed across paylines. The paytable will show how many ways to win are available and how those wins are formed across the reels. The paytable is therefore a valuable resource for learning the important details of a slot before you play.