Whether you are a beginner or a seasoned card game player, knowing when to double down in blackjack is crucial to your success. Though some players overlook this move, it has the potential to boost your winnings significantly when used correctly. Keep reading to know the best time to double down and when not to, top winning strategies and tips, and common mistakes you should avoid to be a profitable player.
In blackjack, doubling down is when you double your original stake in exchange for one extra card. Before launching this strategy, it is essential to understand double down rules variations and when to hit in blackjack.
Some casino operators let players double down on the first two cards only while certain variants limit the strategy to specific hands, like 9, 10, or 11 minus an Ace. Your decision to double down or not also depends on whether you have a hard or soft blackjack hand. Overall, make sure to examine the table rules on doubling down before you start playing.
Knowing exactly when to double down in a blackjack game is what differentiates casual players from experts. The secret to success is knowing when the odds are in your favor. Let’s break down the doubling down rules blackjack players must know:
Whenever you have a hard 11 in blackjack, always double down because you have high chances of drawing a 10-value card. This is one of the most powerful and profitable moves you can make at a blackjack table.
With a hard 10 at hand, you get a high chance of hitting a final total of 20 or 21, especially when the dealer shows a weak upcard, such as 3, 4, or 5. However, you should never double if the dealer has an Ace or any 10-value card as their odds increase.
A soft hand in blackjack happens when you have a hand with an ace that counts as 1 or 11. While double down soft hands can offer great profitable situations, they are only useful in specific cases such as:
Whenever the dealer shows weak upcards (2-6), you should double down as they increase the probability of busting. This is the best time to pressurize the dealer for long term winnings.
Even though doubling down can bring significant gains, you should also know when not to zdouble down in blackjack:
Follow this simple chart whenever you find that blackjack double down strategy is most profitable:
If you have a 10 or 11, you can double down against the dealer’s weak upcards 2 through 9. With a soft 16, 17, or 18, you should only double down when the dealer shows very weak cards 4, 5, or 6 as they have the potential to improve well in one draw. Lastly, evaluate the dealer’s strength, where you only double down on the dealer’s weak upcards and avoid when strong cards are displayed.
| Dealer Upcard | Bust Probability |
|---|---|
| 5 or 6 | ~42% |
| 4 | ~40% |
| 3 | ~38% |
| 2 | ~35% |
Now that you know how to play blackjack double down it is equally important to know the mistakes to avoid when making this strategic move:
You should double down when there is a higher expected value, like when you have a 10 or 11 and the dealer has a weak upcard (2-6).
Not really. Though you can double down on 11, you should avoid the move if the dealer has an ace and in variants that allow dealers to hit soft 17.
You should never double down on hard 12 or higher as there is a risk of busting and on any totals below 9 as they are not strong enough.
It depends on the game or casino rules. Some variations have the double after split (DAS) option that create more profitable doubling opportunities.
Online blackjack games often have unique double down rules, including limits on the qualifying hands.
