House Edge Explained: What Every Player Should Know

At first glance, the house edge might seem like an abstract concept, but it directly impacts your bottom line. By understanding how this built-in advantage works, players can make more strategic choices and minimize losses. This guide breaks down how the house edge is calculated across different games, explains why it matters for your overall experience, and offers tips on how to adjust your play to get the best value from your wagers.

Definition and Purpose of House Edge

The house edge is the built-in advantage that a casino has over players in any gambling game. It represents the average profit the casino can expect to make from each game, expressed as a percentage of the player’s original bet. In practical terms, while players may win in the short term, the house edge guarantees that the casino will profit from all wagers placed in the long run.

Important

House edge only works over time, meaning that if a game has a 5% house edge, you will not lose exactly 5% of your first, second, or even third bet. Yet, the longer you play and the more bets you place, the more likely your losses will approach the house edge percentage. Also, keep in mind that games with higher house edges, like slots or roulette, tend to drain your bankroll faster than games with lower house edges, such as blackjack or baccarat, where skill and strategy can reduce the casino’s advantage.

Interconnection between House Edge and RTP

The House edge and Return to Player (RTP) are two sides of the same coin in casino games. RTP provides players with a percentage of wagered money they get back in the long run, while house edge indicates the opposite — how much the casino keeps over time. Often, online casinos only feature one of the two indicators, yet if you only see the RTP percentage on, let’s say, a slot, it doesn’t mean there is no house edge — instead, it means the house edge is simply the complement of the RTP. For example, if the RTP is 95%, the house edge is 5%, meaning the casino expects to keep 5% of the total amount wagered over time.

Example of House Edge Calculations

Let’s take, as an example, a slot game by Microgaming — Bust the Bank, with an RTP of 96.75%. Making a simple calculation, we can figure out the house edge of the game, 3.25% (100% – 96.75%), meaning a casino keeps 3.25% of your wagered money over time.

Let’s say you bet $100, then the expected loss in the long run will be $3.25 ($100 x 0.0325). Therefore, if you make 10 bets of $100, your expected loss will be $32.5 ($3.25 x 10).

House Edge Across Different Games

Our experts prepared a table with approximate house edges for different types of casino games. Yet, note that the house edge percentage can vary based on the chosen title and casino.

Casino Game	Typical House Edge (%)	Notes
Blackjack	0.5% – 0.75%	One of the lowest edges if played with optimal strategy; it can vary by rules and player skill
Video Poker	0.5%	Also, low edge, depending on the game variant and strategy
Baccarat	1% – 1.2% (can be higher)	Low edge on main bets; some side bets increase the edge significantly
Craps	1.4% – 1.6%	Pass Line bet has about 1.41%; other bets vary widely, some with much higher edge
Live Game Shows	0.4% – 5%	New entertainment-style games with varying house edges
European Roulette	2.5%	The single-zero wheel gives a lower edge than American roulette
American Roulette	5%	The double-zero wheel increases the house edge almost double compared to European roulette
Slots	2% – 15%	Wide range depending on the provider; progressive jackpots usually have a higher edge
Scratch Cards	4% – 15%	Exact house edge is hard to calculate due to unknown prize distribution, but usually around 4% or higher
Keno	20% – 40%	One of the highest house edges in the casino, making it a very unfavourable game for players
Sic Bo	2.5% – 35%	Varies by bet type; some bets have a very high house edge

Common Myths about House Edge

Below, we prepared a list of common myths about the house edge, explained based on expert insights. Let’s take a closer look.

Myth: You Can Beat the House Edge with Betting Systems

Many players believe that betting systems like Martingale or Paroli can overcome the house edge. In reality, these systems only manage how you bet your money, but do not change the underlying mathematical advantage the casino holds. Over time, the house edge ensures the casino will profit regardless of betting patterns.

Myth: The House Edge Changes Based on Winning or Losing Streaks

Some think that if you are on a winning streak, the house edge temporarily disappears or changes. The house edge is a fixed percentage based on the game’s rules and probabilities and does not fluctuate with short-term results. Winning and losing streaks are just natural variances and do not affect the long-term statistical advantage of the casino.

Myth: The House Edge Depends on the Casino

Players often assume that online casinos set house edges themselves, yet it is a complete misunderstanding. House edges, as well as RTP, are set by game developers, and gambling sites have no influence on these two indicators.

Myth: The House Edge Means a Fixed Amount of Loss

The house edge applies to the total amount wagered, not just your initial bankroll. For example, a 5% house edge means the casino expects to keep 5% of all the money you bet over time, which can be much more than 5% of your starting cash if you keep playing. This is why losses can add up faster than many players expect.

Myth: Return to Player (RTP) and House Edge Are the Same

These terms are related but opposite. RTP is the percentage of all wagered money a game returns to players over time, while the house edge is the percentage the casino keeps. For example, a game with a 95% RTP has a 5% house edge. Confusing these can lead to misunderstandings about your chances.

Conclusion

The house edge isn’t something to fear — it’s something to understand. It’s built into every game, but when you know how it works, you can make better decisions, avoid high-risk traps, and choose games that offer fairer value. You may not be able to change the odds, but you can control how you engage with them. Whether you're playing for fun or with strategy, a little knowledge goes a long way toward smarter, more enjoyable play. Stay informed, play responsibly, and let the edge work with your awareness, not against it.

FAQ

How Can I Reduce the Impact of the House Edge while Playing?

No, you cannot change the house edge while playing. Instead, you can choose games with lower house edges and implement betting strategies into your gambling.

How Do Progressive Jackpots Affect the House Edge?

Progressive jackpots typically increase the house edge compared to standard versions of the game. This is because a portion of each bet contributes to the jackpot, which makes the overall payout rate lower. While these games offer larger prizes, the long-term odds are stacked against the player due to the higher house edge.

Can I Trust the House Edge Percentages Shown by Online Casinos?

Yes, in trusted licensed online casinos, the displayed house edge percentages are generally accurate.