Blackjack Basic Strategy: Complete Chart & Guide for Canadian Players

Basic strategy is a set of mathematically proven rules that tell you the optimal action for every possible combination of your hand and the dealer's upcard. It was developed in the 1950s by mathematicians who used computer simulations to calculate the expected value of every possible decision. Following basic strategy doesn't guarantee you'll win every hand — blackjack still involves variance. But over thousands of hands, basic strategy minimises your losses and maximises your wins. Deviating from basic strategy always increases the house edge. The strategy varies slightly depending on the specific rules of the variant you're playing, particularly the number of decks and whether the dealer hits or stands on soft 17. The chart and principles below apply to the most common multi-deck game (4–8 decks, dealer stands on soft 17).

Before memorising the full chart, lock in these absolute rules. They apply in virtually every blackjack variant: Always: • Always split Aces — two hands starting with an Ace is far stronger than a soft 12 • Always split 8s — a hard 16 is the worst hand in blackjack; split it into two 8s • Always stand on hard 17 or higher — the bust risk outweighs any potential gain • Always hit on hard 8 or lower — you cannot bust, so always take a card • Always double on 11 against dealer 2–10 — you have the highest chance of landing a 21 Never: • Never split 10s or face cards — a 20 wins approximately 85% of the time; don't break it • Never split 5s — two 5s give you a 10, which is a strong doubling hand • Never take insurance — the house edge on insurance is 7.7%, far worse than the main game • Never hit hard 17 or higher — the bust probability is too high to justify it

A hard hand is any hand without an Ace, or a hand where the Ace must count as 1 to avoid busting. Hard 8 or less: Always hit. Hard 9: Double against dealer 3–6. Hit against all other dealer upcards. Hard 10: Double against dealer 2–9. Hit against dealer 10 or Ace. Hard 11: Double against dealer 2–10. Hit against dealer Ace (in most multi-deck games). Hard 12: Stand against dealer 4–6. Hit against all other dealer upcards (including 2 and 3). Hard 13–16: Stand against dealer 2–6. Hit against dealer 7 through Ace. Hard 17 or higher: Always stand. The key insight for hard 12–16 (the 'danger zone') is that you should stand when the dealer is likely to bust (showing 2–6) and hit when the dealer is likely to make a strong hand (showing 7–Ace). Standing on 16 against a dealer 7 feels wrong but hitting is the mathematically correct play.

A soft hand contains an Ace counted as 11. The key advantage of soft hands is that you cannot bust with one more card — the Ace simply reverts to 1. This makes soft hands ideal for doubling in the right situations. Soft 13 (Ace + 2): Double against dealer 5–6. Hit otherwise. Soft 14 (Ace + 3): Double against dealer 5–6. Hit otherwise. Soft 15 (Ace + 4): Double against dealer 4–6. Hit otherwise. Soft 16 (Ace + 5): Double against dealer 4–6. Hit otherwise. Soft 17 (Ace + 6): Double against dealer 3–6. Hit otherwise. Soft 18 (Ace + 7): Double against dealer 3–6. Stand against dealer 2, 7, or 8. Hit against dealer 9, 10, or Ace. Soft 19 (Ace + 8): Stand in all situations. Soft 20 (Ace + 9): Always stand. Soft 18 is the most misplayed hand in blackjack. Many players always stand on 18, but against a dealer 9, 10, or Ace, hitting gives you a better expected outcome.

When your first two cards have the same value, you can split them into two separate hands. Here is the correct splitting strategy for each pair: Always split: Aces, 8s Never split: 10s, 5s, 4s Pair of 2s: Split against dealer 2–7. Hit otherwise. Pair of 3s: Split against dealer 2–7. Hit otherwise. Pair of 6s: Split against dealer 2–6. Hit otherwise. Pair of 7s: Split against dealer 2–7. Stand against dealer 7 (in some variants). Hit otherwise. Pair of 9s: Split against dealer 2–6 and 8–9. Stand against dealer 7, 10, or Ace. The logic behind pair of 9s is subtle: you stand against dealer 7 because your 18 already beats the dealer's likely 17; you split against dealer 8 or 9 because your 18 is not strong enough against those upcards.

These are the most costly errors blackjack players make — and the correct play in each case. 1. Playing without basic strategy at all Without basic strategy, the house edge can reach 2–4%. With it, you're playing at 0.5%. This single change is the most impactful thing any blackjack player can do. Online casinos don't penalise you for using a chart — keep one open in another tab. 2. Taking insurance Insurance pays 2:1 if the dealer has blackjack. For it to break even, the dealer would need a 10-value hole card one in three times (33.3%). In a multi-deck game, only 30.8% of cards are 10-value. The house edge on insurance is approximately 7.7%. Always decline. 3. Splitting 10s A hand of 20 wins approximately 85% of the time. Splitting it into two hands starting with 10 is almost always a mistake. Never split 10s. 4. Standing on 16 against dealer 7–Ace This feels risky, but hitting is the correct play. The dealer is likely to make a strong hand, and your 16 loses to anything above 16. Hitting gives you a chance to improve. 5. Not doubling on 11 against dealer 10 Many players are afraid to double here, but the expected value of doubling on 11 against dealer 10 is positive. It's the mathematically correct play. 6. Chasing losses with the Martingale system Doubling your bet after every loss sounds logical but leads to catastrophic losses during inevitable losing streaks. A run of 8 losses from a C$5 starting bet requires a C$1,280 bet to recover. Most tables have limits that prevent recovery. Set a session budget and stick to it.