What Is Basic Strategy?
Blackjack basic strategy is a mathematically derived set of decisions that tells you the statistically best action — hit, stand, double down, split, or surrender — for every possible combination of your hand and the dealer's upcard. Players who master basic strategy can reduce the house edge to as low as 0.5% in favorable rule conditions, making blackjack one of the most player-friendly games on the casino floor.
Why Basic Strategy Works
Unlike pure luck-based games, blackjack involves decisions that directly affect the outcome. Every incorrect play costs you expected value. Basic strategy was developed through computer simulations running millions of hands, finding the single best play in every scenario based on the cards remaining in the deck.
Core Basic Strategy Rules
When to Hit or Stand (Hard Totals)
- Hard 8 or less: Always hit.
- Hard 9: Double if dealer shows 3–6; otherwise hit.
- Hard 10–11: Double if your total beats the dealer's upcard; otherwise hit.
- Hard 12–16: Stand if dealer shows 2–6; hit against 7 or higher.
- Hard 17+: Always stand.
Soft Hands (Hands Containing an Ace)
- Soft 13–14 (A-2, A-3): Double vs dealer 5–6; otherwise hit.
- Soft 15–16 (A-4, A-5): Double vs dealer 4–6; otherwise hit.
- Soft 17 (A-6): Double vs dealer 3–6; otherwise hit.
- Soft 18 (A-7): Double vs 3–6; stand vs 2, 7, 8; hit vs 9, 10, Ace.
- Soft 19–20: Always stand.
Pair Splitting
- Always split: Aces and 8s.
- Never split: 10s and 5s.
- Split 9s: Against dealer 2–6 and 8–9; stand vs 7, 10, Ace.
- Split 7s: Against dealer 2–7; hit otherwise.
- Split 2s and 3s: Against dealer 2–7; hit otherwise.
Rule Variations That Affect Strategy
Basic strategy shifts slightly depending on the table rules. Key factors include:
| Rule | Effect on House Edge |
|---|---|
| Dealer stands on soft 17 | Reduces house edge (~0.2%) |
| Blackjack pays 3:2 | Player-favorable (vs 6:5) |
| Late surrender allowed | Reduces house edge (~0.07%) |
| Double after split allowed | Reduces house edge (~0.14%) |
| More decks used | Slightly increases house edge |
Common Mistakes to Avoid
- Taking insurance: Insurance is a side bet with a significant house edge. Basic strategy players always decline it.
- Standing on 16 vs a dealer 10: It feels safe, but hitting is the correct play.
- Not splitting Aces: Two separate hands starting with an Ace is almost always better than playing a soft 12.
- Mimicking the dealer: Always standing on 17+ ignores profitable doubling and splitting opportunities.
Practicing Basic Strategy
Print out a basic strategy card — most casinos permit their use at the table. Practice with a free online blackjack simulator until the decisions become second nature. Consistent, correct play is the first step toward becoming a disciplined casino player.