House Advantage Casino

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Calculation of Casino House Edge

A 1.52% house advantage means if we keep betting the Place 6 over a long period of time, we expect to lose an average of about $0.15 for every $10 that we bet. The casino odds for the Big 6 bet are 1:1, or even money. This means if we bet $6 on the Big 6 and win, we win $6. It is a little more complicated than that. We gave a simple example to illustrate the power of the house advantage. Games with the lowest House Advantage. If you are serious about winning money when you go to the casino, the following games are the only ones you should be playing: Blackjack——0.28%; Spanish 21—–0.40%; Super Fun 21—-0.94%.

The house edge (HE) is defined as the casino profit expressed as a percentage of the player's original bet.

The player's disadvantage is a result of the casino not paying winning wagers according to the game's 'true odds,' which are the payouts expected considering the odds of a wager either winning or losing.

The house edge of casino games vary greatly with the game. House edges for slot machines and Keno may be up to 15% and 25% respectively.

In games which have a skill element, such as Blackjack or Spanish 21, the house edge is defined as the house advantage from optimal play (without the use of advanced techniques such as card counting), on the first hand of the shoe (container holding the cards).

The set of the optimal plays for all possible hands is known as 'basic strategy' and is highly dependent on the specific rules, and even the number of decks used. Good Blackjack and Spanish 21 games have house edges below 0.5%.

Example #1:

Calculate the house edge for American Roulette, which contains two zeros and 36 non-zero numbers (18 red and 18 black).

Solution #1:
If a player bets $1 on red, his/her chances of winning $1 is 18/38 since 18 red numbers exist out of 38. However, his/her chance of losing $1 (i.e., winning −$1) is 20/38. Therefore, the expected value may be calculted as follows:
Expected Value = (1)(18/38) + (−1)(20/38)
Expected Value = 18/38 − 20/38
Expected Value = − 2/38 = − 1/19

Expected Value = −5.26%
Therefore, the house edge is 5.26%.

Example #2:

Calculate the house edge for European Roulette, which contain a single zero and 36 non-zero numbers (18 red and 18 black).

If a player bets $1 on red, his/her chances of winning $1 is 18/37 since 18 red numbers exist out of 37. However, his/her chance of losing $1 (i.e., winning −$1) is 19/37. Therefore, the expected value may be calculted as follows:
Expected Value = (1)(18/37) + (−1)(19/37)

House Advantage Casino Games

Expected Value = 18/37 − 19/37
Expected Value = −1/37

Expected Value =

House Advantage Casino Games

−2.7%
Therefore, the house edge is 2.7%.

Example #3:

Calculate the house edge for a game played by wagering on a number from the roll of a single die with a payout of four times the amount wagered for a winning number.

Since the probability of a winning number for a single roll of a die is 1/6, it follows the game has 5 to 1 odds. However, with a payout of only four times the amount wagered (i.e., 4 to 1) for a winning number, the house edge may be calculated as follows:
House Edge = (true odds − payout odds) / (true odds + 1)
House Edge = (5 − 4)/(5 + 1)

House Edge = 1

House Advantage Casino

/6
House Edge ≈ 16.67%

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