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How Does The Casino Have an Edge In Blackjack?

How Does The Casino Have an Edge In Blackjack?

In the world of casinos, both virtual and physical, the term "house edge" often comes into play. The house edge is essentially the statistical advantage that the casino has over the player in every casino game, including the popular card game, blackjack. The fundamental nature of blackjack provides the dealer with an inherent advantage.

In blackjack, the dealer always acts last. This provides them with a distinct advantage as they can see all the player's cards and know who's still in the game. If all players go bust, the dealer automatically wins without having to play their hand. This is one of the key reasons why a casino has an edge in blackjack.

The Impact of Blackjack Rules

The rules of blackjack also contribute to the casino's advantage. The dealer must adhere to a strict set of rules for when to hit and when to stand. These rules can work in favour of the casino, adding to their edge.

For instance, if the player busts, i.e., their total exceeds 21, the dealer automatically wins, regardless of the total of their own hand. This rule alone significantly increases the odds in favour of the dealer.

How Do Casinos Make Money on Blackjack?

The Role of House Edge

The primary way casinos can profit from blackjack is through the house edge. This is a percentage that represents the average amount the casino may profit from a specific game over time. In blackjack, the house edge typically falls between 0.5% and 2%, respectively.

This means that if a player bets £100, the casino is expected to profit between £0.50 and £2, on average, over a long period of play. This is how the casino ensures a steady income from blackjack games, despite paying out any potential winnings to players.

Frequency of Dealer Wins

The frequency at which the dealer wins also contributes to the profits made by the casino. On average, based on the dealer's upturned card, the chances of a dealer busting range from around 17% to 42%. This means that the dealer has a higher probability of potentially winning the game, which in turn can enhance the casino's profits.

Blackjack House Edge

House Edge in Different Variants of Blackjack

The house edge in blackjack is not fixed and can vary depending on the specific variant of the game being played, and the player's skill level and strategy used. 

For instance, classic blackjack can offer one of the lowest house edges, around 0.5%, making it one of the most player-friendly casino games.

However, it's important to remember that the house edge can rise significantly depending on the rules of the particular game and the strategy used.

Additionally, blackjack is also a chance-based game, so any winnings can never be guaranteed.

Reducing the House Edge

While the house edge is inherently a part of every casino game, there are ways to potentially reduce it when playing blackjack. Using a basic blackjack strategy may lower the house edge, potentially making the game more profitable for the player in the long run.

It's important for players to understand the rules of blackjack thoroughly and use this understanding to try and make optimal decisions during gameplay. Possible mistakes can lead to higher chances of the dealer winning, thereby increasing the house edge.

Can Blackjack Be Beaten?

The Reality of Beating the House

While it can be tempting to believe that one can consistently beat the house at blackjack, the reality is that the odds are stacked against the player. Over time, the casino, with its house edge, is almost always expected to win.

However, this does not mean that players cannot enjoy periods of potential success. Skilful players who understand the game well and employ effective strategies may minimise their losses and maximise their potential winnings, although nothing can ever be guaranteed as blackjack is also a game of chance.

The Role of Card Counting

Card counting is a strategy that some players may use in an attempt to try and beat the house. This involves tracking the cards that have been played and using this information to inform future decisions. 

However, it's important to note that many casinos frown upon card counting and players caught using this technique may be banned.

Furthermore, in online blackjack games, the use of Random Number Generators (RNGs) and Continuous Shuffle Machines (CSMs) makes card counting virtually impossible.

Play Blackjack Online

You can play a variety of online blackjack games here, at Roulette Online casino. We have some of the best online blackjack variants such as, Blackjack Madrid, Classic Blackjack, European Blackjack and more!

Roulette Online casino also offers a wide range of video slots and other popular table games. So, if blackjack isn’t your thing, you may find another real money casino game you can play online!


By playing strategically and making informed decisions, it's possible to lower the house edge and increase your chances of potentially winning in blackjack. However, it's important to remember that blackjack, like all casino games, is primarily a game of chance, and there are no guarantees of winning.

Remember to gamble responsibly and, most importantly, enjoy the game!

*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to these games are subject to change at any time. Game features mentioned may not be available in some jurisdictions.