Return to Player (RTP) and House Edge

The Science Behind the Game

Your Guide To Understanding The Odds

Behind the thrilling spins and exhilarating wins of roulette lies a world of mathematical probabilities that influence your chances of success. Two key concepts, Return to Player (RTP) and House Edge, are essential to understanding how these odds work.

Return To Player (RTP): Your Long-Term Companion

Think of RTP as the roulette wheel’s generosity rating. It’s the percentage of all wagered money that a game is theoretically expected to pay back to players over time. For example, a roulette game with a 97.3% RTP means that, over millions of spins, it should return about €97.30 for every €100 wagered.

House Edge: The Casino’s Slice Of The Pie

The House Edge is the flip side of the RTP coin. It represents the mathematical advantage the casino has over players in the long run. In other words, it’s the percentage of every bet the casino expects to keep. For example, a roulette game with a 2.70% house edge means the casino expects to pocket €2.70 of every €100 wagered.

The Connection: A Simple Equation

RTP and House Edge are intrinsically linked. They always add up to 100%. This means that a higher RTP automatically translates to a lower House Edge, and vice-versa.

Why This Matters: Making Informed Choices

Understanding RTP and House Edge is crucial for several reasons:

  • Choosing the Right Game: Different roulette variations have different RTPs and house edges. Knowing these numbers helps you choose the games with the most favorable odds.

  • Setting Realistic Expectations: RTP is a theoretical long-term average. Don’t expect to win that percentage back on every session. It’s a tool for understanding the overall fairness of a game.

  • Responsible Gambling: Knowing the house edge reminds you that the casino has a built-in advantage. This knowledge can help you manage your bankroll wisely and avoid chasing losses.

RTP And House Edge In Roulette

As we’ve discussed, Return to Player (RTP) and House Edge are crucial factors in understanding your odds in any casino game. In roulette, these numbers can vary significantly depending on the specific variation you choose. Let’s break down the key differences to help you make an informed decision:

European Roulette: The Player’s Choice

  • RTP: 97.30%
  •  House Edge: 2.70%
  • Key Feature: Single zero (0)

 European Roulette is the most common and arguably the most player-friendly variation. With just one zero pocket on the wheel, the house edge is lower, meaning you have slightly better odds of winning compared to other versions. If you prioritize maximizing your potential return over time, this is the roulette table for you.

American Roulette: The Double-Edged Sword

  • RTP: 94.74%
  • House Edge: 5.26%
  • Key Feature: Double zero (0, 00)

American Roulette adds an extra zero pocket (00), which almost doubles the house edge compared to European Roulette. This means the casino has a higher statistical advantage. However, some players are drawn to this variation for its faster pace and unique “basket” bet, which covers both zeros and a few other numbers.

French Roulette:

The Connoisseur’s Pick

  • RTP: 98.65% (with La Partage rule)
  • House Edge: 1.35% (with La Partage rule)
  • Key Features: Single zero (0), La Partage and En Prison rules (optional)

French Roulette is the most player-friendly variation, thanks to the La Partage rule. This rule states that if the ball lands on zero, players get half their stake back on even-money bets (red/black, odd/even, high/low). Some tables even offer the En Prison rule, where your even-money bet stays “imprisoned” for the next spin, giving you another chance to recover your stake.

The Bottom Line:

Choose Your Roulette Wisely

While all roulette variations offer excitement and the chance to win, the difference in RTP and house edge can significantly impact your long-term results.


  • If you’re a strategic player who values the best odds, European or French Roulette are your top choices.


  • If you enjoy a faster pace and don’t mind the slightly higher house edge, American Roulette might be your preferred game.


Remember, the best roulette variation is the one that you find the most enjoyable. Experiment with different options at to discover your perfect match!

Decoding The Casino’s Advantage

Roulette is a thrilling game of chance, but it’s important to understand that the odds are always slightly tilted in favor of the casino. This inherent advantage is called the house edge, and it’s the key to how casinos make a profit. Let’s delve into the math behind this concept:

  • The Zero(s): The House’s Secret Weapon

The zero (0) and double zero (00) pockets on the roulette wheel are not just numbers; they’re the foundation of the house edge. Why? Because even though these pockets exist, the payouts for winning bets are calculated as if there were only 36 numbers on the wheel.

  • Probability: The Devil in the Details

In European roulette, there are 37 possible outcomes (0-36). This means the probability of the ball landing on any single number is 1 in 37 (approximately 2.70%). However, the payout for a single number bet is 35 to 1.

Notice the discrepancy? The payout doesn’t perfectly match the probability. This slight difference is where the house edge comes from. It might seem small, but over millions of spins, it adds up to a consistent profit for the casino.

  • Calculating the House Edge: A Simple Example

Let’s take European roulette as an example. To calculate the house edge, we can use this formula:

House Edge = (Losing Outcomes / Total Outcomes) x 100

  • Losing Outcomes: 1 (the zero pocket)

  • Total Outcomes: 37

So, the house edge in European roulette is (1/37) x 100 = 2.70%. This means that for every €100 wagered, the casino expects to keep €2.70 in the long run.

In American roulette, with the additional double zero pocket, the house edge is higher at 5.26%. This is why European roulette is generally considered more favorable for players.

Understanding the Odds:

While no strategy can eliminate the house edge entirely, understanding it can help you make informed decisions. By choosing games with a lower house edge, like European or French Roulette, you’re giving yourself a slightly better chance of winning over time.

Remember, roulette is a game of chance, and the house edge is just one factor to consider. Play responsibly, set limits, and enjoy the thrill of the game!

    How RTP And House Edge Affect Your Roulette Game

    Understanding Return to Player (RTP) and House Edge is crucial for any serious roulette player. These seemingly abstract concepts have a direct impact on your long-term winnings (or losses!) and can guide you towards making smarter choices at the table.

    The Long Game vs. Short-Term Luck:

    Think of RTP as the average grade you might expect on a test after studying diligently. It doesn’t guarantee you’ll ace every quiz, but it gives you a good idea of your overall performance.

    • RTP in Roulette: This percentage tells you how much of the total money wagered on a roulette game is expected to be paid back to players over millions of spins.

    • The Reality of Variance: In the short term, anything can happen. You might have a lucky streak and win big, or face a string of losses despite playing a high RTP game.

    • The House Edge Always Wins (Eventually): The casino’s built-in advantage (the house edge) means that, over time, they are mathematically guaranteed to profit.

    Choosing Your Roulette wisely:

    Different roulette variations offer different RTPs and house edges, which means your odds of winning can vary significantly.

    • European Roulette: With a single zero (0) and a house edge of 2.70%, this is the most player-friendly variation.

    • French Roulette: Even better! If the table offers “La Partage” or “En Prison” rules, the house edge can be as low as 1.35% on even-money bets.

    • American Roulette: The addition of a double zero (00) increases the house edge to 5.26%, making it the least favorable for players

    Bankroll Management: The Key to Longevity


    Understanding the house edge helps you manage your bankroll effectively. Remember, the casino has a statistical advantage, so:


    • Set Limits: Determine how much you’re comfortable losing before you start playing.


    • Don’t Chase Losses: If you’re on a losing streak, take a break.

    Choose Wisely: Opt for European or French Roulette if you want to maximize your odds of winning over time.


      While roulette is ultimately a game of chance, knowledge is power. By understanding RTP and house edge, you can make informed decisions, choose the right games, and enjoy a more rewarding and responsible roulette experience at