Slots Favorites added a button to make it easier to play a game. SLOTS FAVORITES: Free Slot Machine Games!: Amazon.co.uk: Appstore for Android. Skip to main content.co.uk. Hello Select your address Apps & Games Hello, Sign in. Account & Lists Account. Every slot machine has its own odds for winning. Once you add up the odds for each possible prize, you get the machine’s payout percentage, also known as its return to player (RTP). In general, slots are. If you thought winning at online slots was about slamming the 'Spin' button, crossing your fingers, and hoping for the best, think again. It's important to have even a basic understanding of the odds involved in slots if you're going to choose the right game and have a profitable slots life.

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Learn about the odds and probabilities of slot machines, including how slots payouts work at land casinos and also at online casinos.

Article Highlights:

Introduction Slot Payouts at Land Casinos Slot Payouts at Online Casinos

Introduction

Attempting to pinpoint the odds for slot machines is a daunting task. With such a variety of machines and games available, the odds can vary a great deal. Generally slots odds are expressed in the form of a payback percentage. The closer to 100%, the better for players. Some machines even pay back at percentages greater than 100%, giving the lucky players who find them a positive expectation for winning. These 'loose slots' are frequently mixed into the sea of machines on a casino gaming floor. For a while, casino operators placed the highest paying machines in high traffic areas like entrances, bars, and near lines for buffets or shows - basically any place a crowd of people was likely to be. The strategy behind the prominent placement of higher paying machines was that since they produced winners more frequently, they would also generate more interest from passers-by, making other players more likely to play at average or low paying machines.

It didn't take long for slots players to figure out this simple strategy, so casino managers shuffled things up a bit. Reverse methods were employed, putting low-paying machines in high traffic areas, and vice versa. These days, there really is no standard procedure for distributing the different pay level machines on a casino floor. Machines are mostly placed at random or in a secret arrangement that only the casino management and staff are privy to. The machines, themselves, still offer a mix of payout percentages with some high and the majority being low to average.

One popular guideline that is easy to follow is to try multiple machines until you find one that pays. Start with a nominal amount of money - such as 20 credits for a .25 or .50 credit machine - and see how it pays. If you are getting more back than you put in, you may have found a hot slot - or one set for higher payouts. Keep playing until it proves itself otherwise, and then try another machine. If the slot you picked is paying out next to nothing from the start, that could either be a cold machine or one set for lower payouts, which also means it's time to move on. There are many strategies slots players utilise, but a few rules of thumb will hold true regardless of where you play.

Average Slots Payout At Land Based Casinos

When playing slots games at land casinos, you will likely have machines that offer .01, .05, .25, 1, 5, and 100 credit betting denominations. How do you know which ones offer the best return rates? The highest denomination ones of course. Casinos generate more revenue by getting a large monetary turnover. Operators know that less overall money will go in and out of a .05 credit slot machine during the course of a day than will in a 1 credit machine. Because more money turns over in the higher-denomination machines, casinos can afford to offer higher return rates for players. Your bankroll may not be able to support playing a five-credit machine for several hours a day, but with a 98.4% payout, it offers significantly better odds than a .25 credit slot. To take it a step further, although you would have to be a high roller, the one hundred credit slots usually offer a near-100% return rate. Even though the machines don't see nearly as much action as the .25 and 1 credit slots, so much is at stake on a single spin that allows the casino to offer a near even money return.

So how much bankroll do you need to play different denominations of slot machines? Based on a three-coin maximum bet averaging ten spins per minute, and matched against the according payout rates, to play for an hour you would need:

• 6.75 credits to play the .05 credit slots
  
• 26.75 credits to play the .25 credit slots
  
• 74 credits to play the 1 credit slots
  
• 145 credits to play the 5 credit slots
  

Keep in mind that these bankroll figures are only estimates, based on the average payout across all slots. While playing, your actual return may vary a good bit from these numbers. To be conservative, you might try doubling the amounts listed above to ensure one hour's worth of play, if the length of your session is a concern. Lots of players have won giant jackpots with small bankrolls. In 2001, an Arizona businessman on holiday at Harrah's Las Vegas won the multi-million dollar Megabucks jackpot after investing only 22 dollars. The simplicity of the games, and the high win potential is a big part of what fuels the popularity of slot machines.

Average Slots Payout At Online Casinos

Like their land-based counterparts, online casinos are capable of producing large slots wins. Not only have the number of online slots choices matched - and sometimes even exceeded - the variety found in land casinos, but their payout rates tend to be even higher. Depending on the frequency and size of jackpots, online casinos may occasionally even top the 100% mark for overall slots payouts in a given month. While it holds true that players benefit from higher return rates, playing slots online also offers some conveniences over land based play. Gone are the expenses and travel requirements of playing at a brick and mortar casino. Playing slots at home can also be much more informal. For example, a player can play in his or her pajamas, if they choose. For an idea of how well average online casino slot machines pay, the table below shows a recent ranking of top paying internet casinos for slots games:

The numbers on the chart above represent the top five online casinos in terms of slots payouts based upon an unbiased monthly audit by one of the largest international accounting firms for the most recent audit period. All of these casinos' slots games are tested using rigorous accounting standards to ensure fairness for players, and that the casinos are providing a consistently high rate of return.

If you'd like to try your luck playing slots online, browse our list of approved online casinos, which features a number of reputable establishments offering a large variety of slots.

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Slots machines, as games of chance (rather than skill), are generally more about having fun than they are about making money.

However, there are things you can do to maximize your wins and minimize your losses. For example, by calculating a slot machine’s payout percentage, you can obtain a larger picture idea of how much money you stand to win back. Other tactics include using effective bankroll management techniques, joining a slots club to benefit from its rewards programs, and more.

What Are the Odds of Winning on a Slot Machine?

Slot machine odds used to be easy to calculate. When you’re dealing with three reels, ten symbols on each reel, and a limited pay table, then it’s just a simple math problem. But the rise of electromechanical slot machines and (later) video slots added some complexity to the situation.

How Probability Works

Probability has two meanings. One is the likelihood of whether or not something will happen. The other is the branch of mathematics that calculates that likelihood. To understand the odds as they relate to slot machines (or any other gambling game), you have to understand the basic math behind probability.

Don’t worry though. The math isn’t hard. Probability involves addition, subtraction, multiplication, and division, all of which you learned in middle school.

The first principle of probability is that every event has a probability of between 0 and 1. If something has no chance of ever happening, then its probability is 0. If something will always happen, no matter what, then its probability is 1.

Probability is, therefore, always a fraction. It can be expressed in multiple ways, as a decimal, as a fraction, as a percentage, and as odds.

A simple example is a coin flip. The probability of getting heads when you flip a coin is 50%. That’s common sense, but how is it determined mathematically?

You simply take the total number of possible outcomes, and divide the outcome you’re trying to determine the probability of it by that number. There are two possibilities when flipping a coin, heads or tails, but only one of them is heads. That’s 1 divided by 2, which can be expressed as ½, 50%, 0.5, or 1 to 1 odds.

Odds are expressed as the number of ways something won’t happen versus the number of ways that something will happen. For example, if you’re rolling a single six-sided die, and you want to know the odds of rolling a six, you’re looking at 5 to 1 odds. There are five ways to roll something other than a six, and only one way of rolling a six.

When you want to determine the probability of multiple things happening, you use addition or multiplication, depending on whether you want to determine whether one OR the other event will occur, or whether you want to determine whether one event AND the other event will occur.

If you’re looking at an “OR” question, you add the probabilities together. If you’re looking at an “AND” question, you multiply the probabilities by each other.

So if you want to know what the probability of rolling two dice and having one or the other come up with a six, you add the probabilities together. 1/6 + 1/6 = 2/6, which is rounded down to 1/3.

If you want to know the probability of rolling two dice and having BOTH of them come up six, you multiply the probabilities. 1/6 X 1/6 = 1/36.

How Slot Machine Odds USED to Work

Early slot machines were mechanical devices. They had three metal reels that had ten possible stops each.

To calculate the odds of a single symbol appearing on a reel, you just divide the one symbol by the total number of potential outcomes. So if you had one cherry on a reel, your odds of hitting that cherry were 1/10, or 10%.

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To calculate the odds of getting three cherries, you multiple 1/10 X 1/10 X 1/10 and get 1/1000, or 0.1%.

If the odds of hitting that symbol are the same as all the others, then you have 10 possible jackpots you can win, which means that your chances of winning SOMETHING are 10/1000, which is 1%.

Most people wouldn’t play a slot machine that lost 99 times out of 100, though, so slot machine designers added additional, smaller prizes for getting two symbols out of three for certain symbols. And as long as they paid out less in prizes than the odds of hitting those jackpots, then those slots are guaranteed to make a profit in the long run.

For example, if a prize for hitting three cherries was $1000, you’d be playing a break-even game, but if the prize were $750, it’s easy to see how the casino would be guaranteed a profit. The difference between the odds of winning and the payout odds is where the casino makes its money.

How Slot Machines Work Now

Modern slot machines use a computer program called a random number generator to determine the outcomes of the various spins of the reels. This creates an imaginary reel with a number of symbols limited only by the program in question.

A mechanical slot machine with 256 symbols per reel would be huge, too large to play, much less to build. But a computer can create an imaginary reel with 256 symbols per reel and take up no more space than an iPod Shuffle.

To make things even more interesting and entertaining, slot machine designers can program different probabilities for each symbol to come up. Most symbols might come up once every 256 spins, but others might come up twice as often, while still others might only come up half as often.

This enables slot machine designers and casinos to offer slot machine games with far larger jackpots than they were able to when they were limited by mechanical reels. And they’re able to offer these large jackpots and still generate a healthy profit.

How Does This Relate to Payback Percentages?

The payback percentage is the amount of money that the slot machine is designed to pay out over an enormous number of spins. This number is almost always less than 100%. The difference between 100% and the payback percentage is the house edge, and that’s where the casino makes its profits.

A simple example can help illustrate how this works. Suppose you have a slot machine with three reels with ten symbols on each, and it only pays out when three cherries hit. The odds of winning that jackpot, as we determined earlier, is 1/1000.

If we set the jackpot as $900, and charge $1 per bet, the payout percentage for that game will be 90%, or $900/$1000. Of course, no one would play a slots game which only paid out once in every 1000 spins, which is why there are various smaller payouts programmed in.

There’s no way to tell what the payback percentage on a particular game is unless you have access to the par sheet for that machine. Casino management has that information, but players never have access to that info.

The best slot machine odds are almost always found in real casinos. If you see slot machines in an airport or a bar, be aware that the payback percentages on those games is much lower than you’ll see in a real casino.

How to Win at Slot Machines

Everyone would like to know how to win at slots, but the truth is that winning at slot machines isn’t any harder than losing at slot machines. You put your money in the machine, spin the reels, and hope for the best. Slot machines are meant to be fun; they’re not intended to provide the player with an income.

In fact, the reality is just the opposite. Slots are there to provide the casino owners with an income. How that works is one of the subjects of this page.

On the other hand, you can minimize your losses and increase your enjoyment of slots games by understanding how they work. You can also learn which slots pay back the most money. In the long run, the house will still have an edge over you, but understanding how much you can expect to lose in a given venue can help you make better bankroll management decisions.

In fact, it might be a good idea to modify you definition of “winning at slots”. Instead of considering yourself a winner if you bring home a big profit, consider yourself a winner any time you played and had a lot of fun.

How Slots Work

All slot machines in modern casinos use a random number generator (an “RNG) to determine the results of each spin. An RNG is a tiny computer that does nothing but constantly generate numbers. When you push the spin button, that microcomputer selects a number which determines the outcome. In fact, this happens before the reels have even stopped spinning.

On modern slot machines, the reels are just there for show. From a practical standpoint, you could put a quarter in a machine, push a button, and have the screen flash: “You lose!” or “You win $10”. The mechanism that determined the outcome would be the same, but who would want to play a game like that, especially if you know that the house has a mathematical edge over the player.

The spinning reels, the sound effects, and the bonus games are all there to make the game more interesting to play. If you don’t like the artwork, the music, or any other aspect of a slots game, don’t bother playing it, because those are the real rewards of playing. The chance of getting lucky and winning a jackpot is a real reward, too, but don’t ignore the other aspects of the game.

The random number generator is programmed to pay back a certain percentage of the money paid into it over a period of time. This period of time is known in gambling math as “the long run”, and it’s a lot longer than most people think. We’re talking about tens of thousands of spins, not dozens or hundreds.

This percentage that’s programmed into these machines is always less than 100%. If a slots game were programmed to pay back more than 100% of the money put into it, it would lose money for the casino.

Casinos aren’t in business to lose money.

The trick is to find slot machines that have the highest payout percentages.

Which Slots Pay Back the Most Money

If every slot machine game in the world had a payback percentage posted on the machine somewhere, it would be easy to determine which slots pay back the most money. You could limit your play to machines with a payback percentage of over 95% for example.

It’s too bad casinos don’t provide that information on specific games, though.

You can find information about specific locations and their payback percentages, though. Some gambling guides and magazines publish this information. For example, The American Casino Guide provides certified information about the payout percentages in various states. Not all states reveal this information, but it’s not a huge leap of logic to expect better payback percentages in states that do reveal this information.

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For example, the overall payback percentage for slots in Black Hawk, Colorado is 92.8%. In Central City, Colorado, it’s 92.93%, and in Cripple Creek, it’s 93.66%. Alabama doesn’t release the numbers on their payback percentages.

Which casinos do you think offer the better game?

A couple of guidelines hold true no matter where you play, though. One of those is that payouts are better in large cities with lots of gambling. For example, the payouts in Vegas are higher overall than the payouts in Colorado. And the payouts improve when you play for higher stakes. For example, penny slots in Vegas average around 88% to 91%, but dollars slots average between 93% and 96%. Finally, slot machines at airports usually offer the lowest payouts.

What does that mean for the player? It means that over the long run, if you wager $x on a particular game, you’ll win back $x times the payback percentage for that machine. If you’re playing a dollar slot machine on the Strip in Las Vegas, for example, and the payout percentage is around 93%, then if you place $10,000 in wagers, you’ll win back $9300. You lost $700.

That’s only a long term mathematical expectation, though. In the short run, anything can happen, and that’s what keeps people playing.

How to Maximize Your Winnings and Minimize Your Losses

There are three ways to maximize your winnings and minimize your losses. The first is to always join the slots club, and always use your member card while you play. Slots club members get a percentage of their play returned to them in the form of casino rewards and cash back. This is normally a tiny percentage (think 0.1% or 0.2%), but it adds up, especially if you play a lot.

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Don’t buy into the myth that playing with your slots club card lowers your expected return on the game, either. That’s not true. The random number generator in these games has no way of knowing whether or not you’re using your slots club card or not.

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The second way to increase your winnings and minimize your losses is to use effective bankroll management techniques. This means limiting the amount of time that you play, limiting the amount of money that you’re willing to lose in any session and in any given gambling trip, and finding other fun things to do with your time besides just playing the slots.

Finally, try to play the machines with the highest payout percentage. Over the long run, if you keep playing, you’ll probably eventually wind up a loser at the slots (unless you hit a huge progressive jackpot), but you’ll lose your money more slowly and get more entertainment value for the money you gambled.