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Casino House Edge Explained – Why The House Always Wins

House edge is one of the most important things to note while you play casino games. You can find the value attached to table games mostly. For example, blackjack, baccarat, roulette, and more card games have a house edge, and each is different.

We’ll explore the meaning behind the house edge below and look into why the house always wins.

What Does House Edge Mean In A Casino?

House edge is a mathematical advantage casinos have on every table game that earns them a profit over a long time. The small percentage helps casinos in their day-to-day operations and covers running the game.

The lowest house edge can start from 0.5% to slightly over 2%. For example, blackjack and video poker games fall into this category. Conversely, the highest house edge games fall from 15% to 40%, e.g., keno and sic bo.

Why Does The House Always Win?

The house edge might be low in games like blackjack or roulette, so players might wonder whether the house always wins. However, the house edge is designed to work in the long run.

For example, the longer you play, the higher the odds the casino earns a profit. But if you play for a shorter time, they’re unlikely to benefit from the house edge.

What Casino Games Have The Lowest House Edge?

Many of these low-house edge casino games are available at 666 Casino.

European Roulette

The European roulette wheel has 37 pockets numbered 0 to 36. Like most roulette games, the goal is to bet on which pocket you think the ball will stop. 

European roulette has a house edge of 2.7%, while American roulette has a house edge of 5.26%. The difference in house edge comes from the extra 0 in American roulette.


Blackjack is one of the most popular low-house edge casino games. Its house edge falls from 1% to 2%. However, learning basic blackjack strategy can lower the house edge to 0.5%.

The objective in the game is to achieve a hand total closer to 21 than the dealer without going ever. You can find blackjack games and some popular variants here at 666 Casino.

Slot Games

Some slot games have a lower house edge than the best table games. You can identify the house edge in slots by looking at the Return To Player (RTP) rate. The RTP is a theoretical indicator of the money taken in by a slot that it is likely to pay back out to players over a long time. 

So, if it’s the amount the slot may return to players, then the rest is money the casino keeps in the long run – i.e. the house edge.

So, if a slot game has a 96% RTP rate, then the house edge is 4%.

You can check out some high RTP online slots at 666 Casino.

Video Poker

The house edge in video poker varies from 0.5% to 5%, depending on the video poker game you play. These games offer the same excitement as a standard poker game without the dealers and extra players. Just you against the Random Number Generator (RNG).


Baccarat is a card game where players wager on the Player hand or Banker hand winning. You can also bet on a potential tie.

Each outcome has a different house edge. For example, the Banker hand has a 1.06% house edge, while the Player hand has a 1.24% house edge. The tie has a house edge of 9.52%.

Each card has an assigned value in baccarat. The goal is to bet on a hand, and that hand end up with the hand value closest to 9.

Are There Any Games With Zero House Edge?

There are no games with a zero house edge. A zero-house edge casino game means the casino has no advantage. Therefore, they aren’t guaranteed to make any profits in the long run.

However, this did not stop a casino from launching a No Zero Roulette game once. The game didn’t have a house edge. It has numbers ranging from 1 to 36, so there was no zero pocket. However, the objective remains the same: to bet on where you think the ball will stop.

No Zero Roulette implies that there is now a 50-50 probability of landing the outside bets such as red/black, odd/even and high/low. Whereas previously, the zero pocket would count against whichever of these bets you placed.

Ultimately, the casino discontinued the game because it lost them too much money.


You might wonder why we play casino games if the house always wins in the long run. However, the house edge doesn’t exist to punish players; it’s there to give the casino a chance to earn money back.

Casino games are intended as a form of entertainment, not a way to make money. The house edge is something to bear in mind when setting a budget.

*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to these games are subject to change at any time.