Common Blackjack Mistakes To Avoid
Updated July 23, 2026
Editorial Review By: Simon CrippsSports Betting Analyst
Updated July 23, 2026
Editorial Review By: Simon CrippsSports Betting Analyst
Blackjack stands out as one of the most iconic casino games with a rich history and a timeless allure. The thrill of trying to beat the dealer and get as close to 21 without going over has captivated gamblers for generations.
However, amidst the excitement, players often find themselves making strategic blunders and emotional decisions that lead to heartbreaking losses. That's why, in this article, we're here to unearth and dissect some of the biggest blackjack mistakes that players frequently commit.
That's right! We'll explore the common slip-ups that can mess up your blackjack game. Whether it's hitting or standing at the wrong time or not properly managing your funds, we've got your back and are prepared to turn you into a savvy blackjack player who knows how to navigate the tables with confidence and skill.
Now, let's get started!
Based on fundamental principles of successful blackjack strategy and how to play, players should be aware of the following 5 biggest blackjack mistakes to avoid:

One common mistake is not hitting on a soft 18 (an Ace and a 7) when the dealer has a strong card like a 9, 10, or Ace. Even though it might feel odd to request another card with a seemingly good hand, following basic strategy suggests that hitting a soft 18 against a powerful dealer upcard increases the chances of improving the hand.
Another error is always taking insurance bets when the dealer reveals an Ace. Despite the temptation to safeguard your initial bet, statistically, insurance bets rarely offer favorable odds for players. Relying on insurance consistently can result in unnecessary financial losses and impact overall profitability negatively.
Splitting a pair of tens is a big mistake in blackjack. Starting with two tens is a strong position, and splitting them reduces the advantage. The recommended strategy is to stand on a pair of tens and let the dealer play out their hand. Splitting tens deviates from basic strategy and significantly lowers your chances of winning.
Doubling down on a hard 12 or higher (a hand without an Ace) is a risky move that contradicts fundamental strategy. These hands are already in a tricky position, and doubling down increases the risk of going bust. Smart players avoid this mistake and save doubling down for more favorable situations, like a hard 9, 10, or 11.
Players often forget to adjust their strategy based on the dealer's upcard. The correct decision can vary depending on whether the dealer has a weak or strong card showing.
For instance, if the dealer has a 6 showing, it might be better to play more conservatively, knowing there's a higher likelihood the dealer will bust. On the other hand, if the dealer has a strong upcard like a 10, the players might need to take more risks to improve their hands.
In addition to the 5 biggest blackjack mistakes discussed in the previous section, here are a few other basic strategy errors that you should try to avoid:
When deciding on a blackjack table, it's crucial to steer clear of 6:5 payout tables. These tables may seem enticing, but players should be wary due to a significant disadvantage. In a 6:5 blackjack game, the casino holds a substantial edge, as the overall payout never works in the player's favor.
For instance, a $10 bet would only pay out $12. To maximize your chances of success and enjoyment, opt for tables with the standard 3:2 payout ratio, as they offer more favorable odds and a better overall gaming experience.
Avoid doubling down in the following situations:
Remember, strategic decision-making in Blackjack involves considering both your own cards and the dealer's upcard. By understanding when not to double down, you can enhance your overall gameplay and increase your chances of success.
Now that you've learned about the biggest and most common blackjack mistakes, it's time to focus on effective strategies and tips to enhance your blackjack skills. Here are some valuable insights for beginners:
In Blackjack, the decision to double down can significantly impact your gameplay. It's crucial to note that your double-down bet should match your initial bet. For beginners, doubling down with a total of 11 is generally advisable. However, keep in mind that most Blackjack casinos won't allow doubling down after splitting.
While there isn't a foolproof trick for guaranteed success in blackjack, mastering basic strategy can significantly enhance your odds. Focus on making informed decisions based on the game's probabilities and adapting to the cards in play. Continuous practice and strategic play are key components to improving your overall performance in blackjack.

And there you have it! We've covered all of the biggest blackjack mistakes commonly made by beginners and also discussed some of the best strategies you can use to increase your chances of success. Now, it's time to put what you've learned to the best!
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