Starting on the Right Foot
Blackjack is one of the most player-friendly games in a casino — but only if you play it correctly. Many beginners make a handful of repeated mistakes that significantly increase what they lose over time. The good news is that all of these mistakes are avoidable with a little preparation.
Mistake 1: Playing at a 6:5 Table
This is the costliest error you can make before you even sit down. A 6:5 blackjack payout instead of the standard 3:2 adds over 1.3% to the house edge. Always look at the felt or ask the dealer before joining a table. If it pays 6:5, walk away — the economics simply don't work in your favor.
Mistake 2: Not Learning Basic Strategy
Many beginners play by gut feeling or imitate what other players are doing. This results in an estimated 2–4% house edge compared to the 0.5% or less with correct basic strategy. A strategy card is legal to use at the table in most casinos — buy one or print one for free and refer to it every hand until it becomes second nature.
Mistake 3: Never Splitting Aces or 8s
Players often hesitate to split because it requires an additional bet. But Aces and 8s should always be split. A pair of Aces as a single hand is only worth 12 or a soft 12. Split them and you have two potential 21s. A pair of 8s totals 16 — one of the worst hands. Splitting gives you two fresh starts against the dealer.
Mistake 4: Taking Insurance
The casino presents insurance as a way to "protect" your hand when the dealer shows an Ace. In reality, insurance is a separate side bet that pays 2:1 if the dealer has blackjack. The mathematical expectation of this bet is negative for the average player. Unless you're a card counter with a high true count, always decline insurance.
Mistake 5: Failing to Double Down
Doubling down is one of the few times you can get extra money on the table with a built-in advantage. Many beginners skip it out of fear of losing more money. On hands like 11 vs. a dealer 6, or 10 vs. a dealer 5, not doubling means leaving significant expected value on the table over time.
Mistake 6: Standing on Soft 18 Against a Dealer 9, 10, or Ace
A soft 18 (Ace + 7) looks like a good hand, and it is — against weak dealer upcards. But against a dealer 9, 10, or Ace, you should hit. The dealer is likely to land a 19 or 20, making your 18 a losing hand. The soft hand gives you the safety net to hit without risking a bust.
Mistake 7: Splitting 10s
A hand totaling 20 wins the vast majority of the time. Splitting your 10s might seem tempting if the dealer shows a weak upcard, but you're breaking up one of the strongest hands in the game for two uncertain ones. Never split 10s.
Mistake 8: Chasing Losses
After a losing streak, some players dramatically increase their bets to "get even." This is the gambler's fallacy in action — each hand is an independent event, and previous losses have no bearing on the next outcome. Stick to a consistent bet size relative to your bankroll and set a loss limit before you sit down.
Mistake 9: Sitting Down Without a Bankroll Plan
Decide before you play: how much are you willing to lose in this session? A general guideline is to bring at least 20–30 times your intended bet size per session. This gives you enough runway to weather normal variance without going broke before the session evens out.
Mistake 10: Playing Too Fast
More hands per hour means more opportunities for the house edge to grind against your bankroll. There's no shame in taking your time, consulting a strategy card, or asking the dealer to wait a moment. Slower play also helps you stay mentally focused and avoid sloppy decisions late in a long session.
The Simple Fix
Avoiding most of these mistakes boils down to three things: find a 3:2 table, use a basic strategy card, and set a clear bankroll limit. Stick to those fundamentals and you're already playing smarter than a large portion of the people at the table.