Blackjack Strategy Guide

A strong blackjack strategy can help to minimize losses and increase the potential for long-term profit. As blackjack is a casino game with elements of both luck and skill, your decisions can influence results. Making decisions with perfect blackjack strategy can reduce the casino’s house edge to 0.5% or lower.

This blackjack strategy guide focuses on the importance of decision-making in this popular casino game. We look over the mathematical probabilities that make strategy possible and provide practical tips for playing the game. Understanding these factors can help you become a more accomplished player, so keep reading to find out more.

In This Article:

How Blackjack Basic Strategy Works

Basic strategy in blackjack involves making the optimal move in every situation. Because a deck contains 52 cards, and we know how many decks will be used in a game, it is possible to use probability to calculate the optimal move based on your hand and the dealer’s up card.

When playing a standard game of blackjack, your options are to hit, stand, double, or split. The choice you make should be the one that is most likely to win by beating the dealer’s hand with 21 or lower. Mathematicians and statisticians have already determined the odds of each scenario and assigned the optimal move based on it. So, you can use a simple blackjack strategy table to identify the best choice for every hand.

Here are some examples of perfect blackjack strategy moves.

  • Hit on a Hard 13 Against Dealer 2 or Higher – Statistically, it makes more sense to hit on a hard 13 against a dealer’s up card. 13 is not considered to be a strong card, and the probability of it being beaten by the dealer is considerable enough to hit.
  • Stand on Hard 17 – Standing on a hard 17 is recommended, regardless of the dealer’s up card. This is because 17 is a strong score that forces the dealer to potentially bust by taking more cards to match your hand value.
  • Split on A-A and Dealer 10 – The optimal move in this scenario is to split. By splitting two Aces, you can potentially make two hands with blackjacks. In terms of probability, there is a 30.77% chance of receiving a card with a value of 10 on each split.
  • Double Down on 10 and Dealer 9 – In this scenario, it is best to double down. A hard 10 is a good position to be in and could help you make a strong hand, including a natural. While only one point lower in value, a 9 is not considered to be a strong start for a dealer as it may require them to take one more card to reach 17 and bust.

It is important to understand that making the right move does not guarantee you will win. Even the best blackjack strategy is susceptible to bad luck because blackjack includes elements of chance. For example, you have a 30% chance of getting a blackjack when you split aces, but that won’t happen if the next card is not a face card.

Blackjack strategy ensures you are choosing the best move based on mathematically sound information. And that you are in the most advantageous position relative to your hand and the dealer’s up card.

Blackjack Split Aces

Another vital part of applying optimal strategy is that it can potentially lower the house’s advantage. House edge is defined as the theoretical mathematical advantage a casino has over you. It is represented as a percentage of every wager the casino expects to keep. The house edge in blackjack without basic strategy is generally accepted to be around the 2% mark. By applying basic strategy, you can reduce the house edge to 0.5% in standard blackjack. In single-deck blackjack, it may even be lower.

House edge is based on probability and is calculated over thousands of hands. You could lose 70 out of 100 hands you play at a casino, which would not be in check with the house edge in the long run. That is how casinos continue to make a profit, even when players use perfect blackjack strategy. Applying strategy is the best way to lower the house edge and minimize your losses over time, but each hand is still down to the luck of the draw.

Using Blackjack Strategy Charts

A strategy chart is typically a color-coded table broken into several rows and columns. The rows represent your hand and the columns represent the dealer’s up card. The chart shows whether to hit, stand, split, or double, based on the probability analysis of each blackjack hand.

Here is a blackjack strategy card you can use when you play.

Blackjack Strategy Card

To use a blackjack strategy table effectively, you must know what your cards are and what the dealer’s up card is. The cell where your hand value intersects with the dealer’s up card value is your move for that combination. For example, if your hand is equal to 15 and the dealer’s up card is 9, the recommended move is to hit. You can find the meaning of the letter or letters for that recommended action in a key below the grid. For example, H = Hit or S = Stand.

All situations are covered, meaning there is a suggested action for every hand. In cases where there are two potential moves, there will be two suggested actions. A good example of this is RS: Surrender if allowed; otherwise stand, as it accounts for tables that may have restrictions on surrender. In this case, where the surrender rule is not permitted, you should stand.

Players of all experience levels use blackjack strategy tables when playing the game. You can reference them online when playing blackjack at an online casino. Most land-based casinos also permit their use as long as they are used discretely and do not interrupt the flow of a game. We recommend checking the casino’s rules first before taking them to a brick-and-mortar casino.

Blackjack Strategy for Different Game Rules and Variants

Basic blackjack strategy is not suitable for all variants and offshoots of the game. This is because even the slightest change in rules can affect the probability of a scenario. As such, your strategy must be tailored to the variant you are playing.

When different rules and scenarios are at play, you must adjust accordingly. But before you can apply optimal strategy to other blackjack variants, it is in your interest to first learn the basic rules of the game you are playing. There are nuances and deviations in these variants that can impede your ability to rack up consistent wins.

It also pays to be conscious of rule changes that are based on where you are playing. Some casinos will have “standard” blackjack tables with minor tweaks that can affect your strategy. One example is when dealers must either stand or hit on soft 17. In this case, it is advantageous to have a strategy chart that takes this into account.

Similarly, you also need to adjust your strategy when you play different blackjack variants. Here are a few examples of blackjack variants and the reasons you need to adjust your strategy when you play them.

  • European Blackjack – This variant only allows you to double down on hands of 9, 10, or 11. Splitting is only allowed with cards of 10 value and of the same face, such as kings, and re-splitting is not allowed. You need a strategy chart that takes these restrictions into account.
  • Pontoon – Pontoon is a five-card version of blackjack, which limits how many times you can hit. Splitting Aces and 8s, just like regular blackjack, is a good idea. Furthermore, it pays to hit on 14 or less whenever you don’t have a five-card trick.
  • Free Bet Blackjack – This variant allows free double down and splits, which ultimately form part of the core strategy. Doubling down on hard 9, 10, or 11s, as well as splitting Aces and 8s, can often be recommended moves. But you should avoid splitting pairs of 10s, as this can be counter-productive under the rules of the game.

If you’re playing another version of blackjack, we recommend learning the basic rules of the game before you start. Once you are familiar with the fundamentals, you can then adjust your strategy to work with that variant. Tailoring your approach to other blackjack games and offshoots is important, so ensure you are using an optimal strategy and modified strategy charts for that game.

Blackjack Strategies That Don’t Work

The best blackjack strategies are based on probability and lowering the house edge. There are other approaches to winning at blackjack that are based on supposition, such as “Assume a Ten.” Others, like “Never Bust,” are grounded in the belief that cautious betting can yield positive results in the long term.

Here are four blackjack strategies that don’t work and should not be used over playing blackjack with basic strategy.

Mimic the Dealer

This strategy simply involves imitating what the dealer is doing. To achieve this, the player will act as the dealer does, such as hitting until they create a hand of 17 or more. This is flawed when we introduce variables like the dealer’s hole card or the fact that the dealer can’t split or double down.

The Mimic the Dealer strategy forsakes many of the strong points of basic strategy. This includes the use of a printable blackjack strategy card at the table and making optimal decisions based on probability. It doesn’t stand up to scrutiny the same way as perfect strategy does.

Never Bust

This strategy recommends players avoid hitting when their hand total is 12 or more, as doing so may lead to a bust. However, this approach is a little too cautious to be viable. It doesn’t factor in situations where hitting would be an advantage, and overlooks viable pathways to increasing the chance of wins. At the very least, the Never Bust strategy leaves opportunities to improve your hand on the table.

The Never Bust strategy is very plain and is not strong enough to work consistently. For example, by standing on 12 or more, you are giving the dealer ample opportunity to make stronger hands. This can result in losses that may come thick and fast.

Assume a Ten

Some players believe that the unseen card in the dealer’s hand is always worth ten. The logic here is that cards valued ten (10 through to King) make up 30% of a deck. Based on this assumption, they adjust their decisions and bets accordingly. However, this strategy is flawed because it relies on an incorrect premise. The unseen card in the dealer’s hand can be of any value, and simply assuming it is a ten can lead to poor decision-making.

Another reason why this blackjack strategy doesn’t work is that there can often be multiple decks in play. When this is considered, it further damages the credibility of the Assume a Ten strategy.

Progressive Betting

Progressive betting in blackjack involves increasing or decreasing your bet size based on the result of your previous bet. This is a strategy that can be used in any form of betting, and there are several progressive betting systems in existence, such as the Martingale, the Fibonacci, and the Paroli.

Blackjack progressive betting systems don’t have any effect on the house edge because your chances of winning or losing a hand don’t change based on how much you bet. They can also be very dangerous. For example, the Martingale system insists you keep increasing your stake after a loss. A few losses in a row can result in losing your entire bankroll.

There are times when you might want to experiment with progressive betting systems in blackjack. We don’t recommend doing so with real money. You can try these systems out at online casinos with blackjack free play mode if you are curious. As they are not reliable, the risk you take with your bankroll far outweighs your expected return. In the long run, these blackjack systems will not yield consistent profits.

Another time you might want to try progressive systems at a land-based casino is when your printable blackjack strategy card is not permitted on the table. If this is the case, it may be best to stick with Mimic the Dealer and Assume a Ten. These will probably give you a better chance of winning in the short term.

Card Counting in Blackjack

Card counting is a strategy in blackjack used by players to gain an advantage over the casino. By keeping a mental note of cards that have been dealt, experienced card counters will aim to make informed decisions about the ones that may be coming next. Although it is frowned upon heavily, card counting is technically legal. However, if you are suspected of card counting, you may be asked to leave and could face a ban from the premises or have your online casino account closed.

Card counting is not the same as blackjack strategy. But what makes card counting attractive to players is the chance to reduce the edge the casino has over them. More than this, it can theoretically give the player an advantage over the dealer if they are skilled enough to predict the next cards dealt. When Aces and cards with a value of 10 remain in the shoe, this is better for the player. Card counting essentially tracks the balance of high to low cards in the shoe.

The majority of card counting systems assign a value to cards. Here is how it works.

  • Cards 2 to 6 (+1) – These are referred to as “low cards,” and are desirable by players in several situations.
  • Cards 7 to 9 (0) – These cards are of neutral value. For the purposes of card counting, they don’t play a role in the accounting process.
  • Cards 10 to Ace (-1) – Known as “high cards,” 10 through Ace are better for the dealer. For this reason, they are assigned a -1 figure when counting cards.

Depending on the card dealt, the counter will either add +1, minus -1, or do nothing (0). For example, if a 3 is dealt, they will add +1. If a 7 is dealt, they do nothing. If a King is dealt, the card counter removes -1 from the running count.

The running count is based on the cards that are known to have been dealt. This means all hands on the table, including the dealer’s up card and full hand. When values have been assigned to all cards, the running count is achievable. Here are two examples to help you better understand this principle.

Blackjack Card Counting Image 1
Blackjack Card Counting Image 2

In theory, card counters are advantaged when the running count is positive, like the first image. If it is negative, like the second image, the advantage is with the casino. But that is an oversimplification. All cards that come out of the shoe must be accounted for until the dealer shuffles when card counting.

More decks in play mean more variables you need to account for. When you contrast having a running count of +6 in blackjack played with a single deck to the same count in a game with six decks, it is easy to see why. The ratio of low cards to high cards is easier to track with fewer decks. With single-deck blackjack difficult to find at land-based casinos, it’s tougher to find card counting systems that work.

Simple Blackjack Strategy Tips to Takeaway

Some blackjack strategy tips are easy to remember. Especially when you don’t have a strategy chart on hand. The starting point is to ignore progressive betting systems, as they offer no real tangible value and can make you blow through your bankroll very quickly in a bout of bad luck.

Here are some more practical tips you can employ that don’t require a guide or statistics.

  • Always Stand on 17 – If you have been studying how to win at blackjack, you may have seen this one mentioned more than once. Standing on 17 is a good strategy because the hand is strong enough to stick with. What’s more, 17 may force the dealer into taking more cards, which could lead to a bust.
  • Act on the Dealer’s Up Card – A blackjack strategy table is designed to make the optimal move based on your hand and the dealer’s up card. When you don’t have one to hand, an easy way of doing this is to act according to their up card. Low-value up cards (2 to 6) mean you can be more conservative than high-value up cards (7 to Ace).
  • Don’t Split 10s – Splitting on cards that both have a value of 10 is not a good idea. A combined value of 20 sits only behind a natural or a 21 as the strongest hand in the game. There is no guarantee that your split hands will amount to better, so you should stand.

These practical blackjack tips may not be as comprehensive as a strategy chart. They can, however, reduce your chances of racking up losses. When you combine all three of these strategy tips above, you are putting yourself in a strong position.

FAQs About Blackjack Strategies

What is the best blackjack strategy?
ABasic strategy, as outlined in a blackjack strategy chart, is the best approach when playing blackjack. There are a finite number of moves possible in a game, so the optimal move for each scenario is already known based on probability and math.
Do you hit or stand on 16?
AIn most cases, it’s best to hit on 16 if the dealer has a 7 or higher, and stand if the up card is a 2 to 6. But it is ideal to refer to a blackjack strategy chart to find out which set of circumstances favors hitting or standing on 16 based on the specific rules of the game you are playing.
What is a natural blackjack?
AIn blackjack, a natural is a winning hand comprised of an Ace card and a card with a value of 10. Also known as a blackjack, this hand pays out immediately as the game has ended. Regardless of the dealer’s down card.

This hand is the most desirable in the game. Traditionally, it pays out at 3:2 or 6:5. Some modern variants of blackjack may have a lower payout for a natural, so it is always best to check for this before you play.
Why is 3 to 2 better than 6 to 5 in blackjack?
ABlackjack tables with 3 to 2 payouts have better odds for a natural. For example, if you bet $20 and get a natural blackjack, you would win $30 at a 3:2 table. That same bet would only win $24 on a 6:5 table. As you can see, it is potentially more profitable to play on tables with 3:2 rather than 6:5.
Kevin Roberts
Kevin Roberts Administrator

Kevin Roberts, previously published under the pseudonym Noah Davis, is one of the more diverse writers at GamblingSites.com. Like many of his colleagues, he's a huge fan of both football and basketball. But he also writes about box office records, TV show prop bets, DFS, and all kinds of other subjects.

When it comes to the NFL, Kevin's favorite team is the Green Bay Packers. He enjoys cheering them on with his wife and daughter.

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