Casino & Table Games
Basic strategy blackjack
A set of rules that tells blackjack players the mathematically correct action — hit, stand, double, split or surrender — for every possible hand against each dealer up-card, minimising the house edge over time.
- Also called
- Basic strategy; basic strategy chart; blackjack basic strategy.
- Applies to
- Total-dependent blackjack play across different rule sets, deck counts and table variants.
- House edge example
- Under one European blackjack rule set, basic strategy produces a house edge of 0.62%.6
- How it works
- The player compares their hand to the dealer's up-card and follows the prescribed action: hit, stand, double, split or surrender.
Key points
- The strategy is total-dependent: it uses hand totals and hand type (hard, soft or pair) rather than full card composition.45
- It is usually presented as a chart or set of rules covering hard totals, soft totals and pairs.23
- Basic strategy is not universal; the recommendations vary by rule set and deck count, so players should use a chart matched to their specific game.14
- The term refers to the playing method itself, not the printed reference card that shows it.23
How to learn basic strategy blackjack
- Find a chart that matches your game: single-deck, double-deck or six-deck, and the specific rule set (e.g. dealer stands on soft 17).23
- Memorise the chart in sections: first hard totals, then soft totals, then pairs. Many players use a printed basic strategy blackjack card at the table.
- Practise with a free online trainer or a deck of cards until the decisions become automatic. Repetition is the key to recall.
When to split and double down in blackjack
| Action | Hand | Dealer up-card |
|---|---|---|
| Split | Aces, 8s | Any |
| Split | 2s, 3s, 6s, 7s | 2 through 7 |
| Split | 4s | 5 or 6 |
| Split | 9s | 2 through 6, 8 or 9 |
| Double down | 11 | Any |
| Double down | 10 | 2 through 9 |
| Double down | 9 | 3 through 6 |
| Double down | Soft 13–18 | 4 through 6 |
Common questions
How to learn basic strategy blackjack?
Start by finding a chart that matches your specific game (deck count and rule set). Memorise it in sections: hard totals first, then soft totals, then pairs. Use a printed blackjack basic strategy card at the table and practise with a free online trainer until the decisions are automatic.
When to split and double down in blackjack?
Under basic strategy, always split Aces and 8s. Double down on 11 against any dealer up-card, and on 10 against 2 through 9. For soft hands, double on soft 13–18 when the dealer shows 4 through 6. These actions increase your bet when the odds favour you.
Where this term is used
Not the same as
- Blackjack strategy card — the printed reference card that shows basic strategy, not the strategy itself
- Blackjack basic strategy chart 6 decks — a specific six-deck chart for one rule set, while basic strategy applies across many rule sets and deck counts
Related terms
Sources
- Glossary of blackjack terms - Wikipedia en.wikipedia.org Supports the alternative names and the variation by rule set.
- Single-Deck Blackjack Strategy wizardofodds.com Supports the presentation of strategy for hard totals, soft totals and pairs.
- Blackjack - Basic Strategy (General) wizardofodds.com Supports the presentation of strategy and the distinction from the printed card.
- Composition-Dependent Strategy - Blackjack - Wizard of Odds wizardofodds.com Supports total-dependent strategy and the variation by rule set.
- Total Dependent vs. Composition Dependent Basic wizardofodds.com Supports total-dependent vs composition-dependent strategy.
- Basic Strategy for European Blackjack - charts wizardofodds.com Provides the specific house edge figure for European blackjack under basic strategy.
Sources are drawn from regulators, universities and published research, and each one is labelled with what it actually is — a preprint is not called a paper. Bookmaker and affiliate pages are never cited here, because a page that sells betting is not a neutral authority on it.