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It is a known fact that in the Blackjack game one gets betting odds that are a lot more favorable in comparison to another casino games. But, each decision that you take as a player for hit, double, stand or split could drastically alter the odds. In addition, every casino set their own rules deciding when could you double down, or when could you split or whether your dealer hits soft seventeen or not.

These are the various differences that change house edge. House edge generally range from 0.45 percent to 0.85 percent in most of the standard games in Blackjack, especially those which pay three to two on wins & one to one for all the remaining wins. Here we will be discussing about a few Blackjack rules which substantially change house edge or betting odds of the game.

No. of decks

No. of decks in Blackjack usually varies from one to eight decks. Talking about online blackjack games, 8 deck shoes randomized and shuffled for each hand generally are considered the most popular ways. For online blackjack games which have 6 deck shoes, its house edge gets minimized to close to 0.028 percent. The lesser the no. of decks employed, better are the betting odds of the player.

The Soft seventeen:

Most of the Blackjack games need the dealer for hitting on soft seventeen. For those games where your dealer is standing at soft seventeen, then house edge gets lessened to around 0.21 percent.

Peak in Blackjack

For most of the variants of Blackjack, dealer peaks on the blackjack while displaying an Ace. Main difference is whether the dealer while showing the face card peaks or not. Usually the various versions for checking out the Blackjack alter house edge that varies between 0.01 percent & 0.10 percent.

Double down

Most of the casinos usually permit double down for any of the two cards. While in some cases, the casinos prohibit hands that could be doubled. It usually is written as a D8 or sometimes D9. The D9 stands for doubling that's permitted for nine to eleven hands. This deviation in the house edges among the "double any of the two" & "D9" is close to 0.11 percent.

Doubling after splitting:

Normally casinos permit split hands for doubling. As they don't permit it, the players get reduced betting odds as house edge gets increased by around 0.14 percent.


The casinos employ varying rules regarding if the hands could be re-split & if it can then what's the no. of times it can? With re-split three total hands considering as base: house edge gets reduced by 0.008 percent.