Blackjack Basic Strategy: The Complete Guide
The mathematically correct play for every hand — and how to learn it.
What is Basic Strategy?
Every hand of blackjack has a mathematically correct play. Hit, stand, double down, split, or surrender — one of these options loses the least money (or wins the most) over thousands of hands. This set of correct plays is called basic strategy.
Without any strategy, the average blackjack player faces a house edge of about 8%. That means for every $100 bet, you lose $8 on average. Basic strategy cuts that down to roughly 0.5% — just 50 cents per $100. It's the single most impactful thing you can learn as a blackjack player.
The correct play depends on exactly two things: your hand and the dealer's upcard (the one face-up card you can see). Nothing else matters — not your gut feeling, not your streak, not what happened last hand. Math doesn't care about hunches.
See It in Action
Watch how basic strategy works. Each hand below shows you the correct play and explains why:
16 vs dealer 10 — the dealer likely has 20. Standing on 16 loses. Hitting is risky but standing is worse.
When to Hit or Stand in Blackjack
The hit/stand decision is the most common one you'll face. These rules apply to hard hands (hands without a usable ace). We'll cover soft hands and pairs in their own sections below.
Always stand on hard 17 or higher
With 17+, you're more likely to bust than improve. The risk of hitting outweighs the potential gain. The one exception: surrender hard 17 vs an Ace if the casino allows it.
Always hit hard 8 or less
You can't bust with a total of 8 or less, so there's no risk in taking another card. You're guaranteed to improve your hand.
The “dealer bust zone”: stand on 12-16 vs dealer 2-6
When the dealer shows a low card (2-6), they're likely to bust. Your stiff hand (12-16) is bad, but the dealer's situation is worse. Let them take the risk. Exception: hit 12 vs dealer 2 or 3 — not quite weak enough to stand.
Hit 12-16 vs dealer 7 or higher
When the dealer shows a strong card (7+), they'll likely make a hand of 17-21. Your stiff hand won't win by standing, so you need to improve. Yes, you might bust — but standing is even worse.
Hard Hand Strategy
A hard hand is any hand without a usable ace — or where the ace must count as 1 to avoid busting. Examples: 10+6 = hard 16, 10+7 = hard 17, 9+4 = hard 13.
Hard hands are the most common type you'll play. The key insight: your decision is almost entirely about whether the dealer is showing a weak card (2-6) or a strong card (7-A).
- 8 or less: Always hit
- 9: Double vs dealer 3-6, otherwise hit
- 10: Double vs dealer 2-9, otherwise hit
- 11: Double vs everything (your best doubling hand)
- 12: Hit vs 2-3, stand vs 4-6, hit vs 7+
- 13-16: Stand vs 2-6, hit vs 7+ (surrender 15-16 vs 10/A)
- 17+: Always stand
Soft Hand Strategy
A soft hand contains an ace counted as 11. The hand is “soft” because you can't bust by taking one more card — the ace will just become 1. Examples: A+6 = soft 17, A+3 = soft 14.
Soft hands are more flexible than hard hands. You can hit more aggressively because there's no bust risk. The main opportunity with soft hands is doubling down — you get to put more money on the table when you have a safety net.
- 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/A
- Soft 19+ (A+8, A+9): Always stand
Many players stand on soft 18 no matter what. But soft 18 vs a dealer 9 is actually a losing hand — the dealer's likely total (19) beats you. Hitting gives you a chance to improve, and you can't bust because of the ace.
When to Split Pairs
When you're dealt two cards of the same rank, you can split them into two separate hands. You place a second bet equal to your original, and each card gets a new partner. Splitting is powerful when it turns one bad hand into two good ones.
- Always split: Aces and 8s
- Never split: 10s and 5s (10s = great hand of 20; 5s = double on 10 instead)
- Split vs weak dealer (2-6): 2s, 3s, 6s, 7s
- Split vs weak dealer (2-7): 9s (but stand vs 7 — you'd beat the dealer's likely 17)
- 4s: Only split vs 5-6 (with DAS), otherwise hit
A pair of 8s gives you 16 — the worst hand in blackjack. You'll lose most of the time no matter what you do. But two separate hands starting from 8 each have much better odds. You're turning one terrible situation into two decent ones.
When to Double Down
Doubling down means doubling your bet and receiving exactly one more card. You do this when the math strongly favors you — when you're likely to end up with a strong total and the dealer is likely to bust or end up weak.
The best doubling situations are when you have 10 or 11. With these totals, there's a high chance your next card gives you 20 or 21. You're putting more money on the table when the odds are in your favor.
- 11: Double against everything — your strongest doubling hand
- 10: Double vs dealer 2-9 (not vs 10 or A — too strong)
- 9: Double vs dealer 3-6 only (dealer bust zone)
- Soft 13-18: Double vs weak dealers (see soft hand rules above)
When to Surrender
Surrender lets you give up half your bet instead of playing the hand. It sounds like quitting, but it's actually a smart play in specific situations where you'd lose more than 50% of the time anyway.
- Hard 16 vs 9, 10, or A: The worst hand vs the strongest cards
- Hard 15 vs 10 or A: Nearly as bad
- Hard 17 vs A: Surprisingly, surrendering 17 vs A saves money
Not all casinos offer surrender. If it's not available, hit instead on 15-16 vs strong cards. TrueCount's strategy chart adjusts automatically based on your table rules.
Why Most Players Get It Wrong
Most blackjack players think they know basic strategy. They don't. Studies show the average player makes the wrong play on 15-20% of hands. The most commonly misplayed hands:
How to Learn Basic Strategy
Reading the chart is step one. Making the right play under pressure — automatically, without thinking — is the goal. Here's the proven path:
- 1Study the chart — don't memorize it all at once. Start with hard hands, then soft, then pairs.
- 2Practice with feedback — use TrueCount's strategy trainer. It deals you random hands and tells you instantly if you made the right play, with an explanation of why.
- 3Track your accuracy — TrueCount builds a personal heatmap showing exactly which hands you get right and wrong. Focus your practice on the red spots.
- 4Aim for 95%+ accuracy — that's your baseline before moving on to card counting. Most players get there within a few hours of practice.
Ready to test your strategy?
TrueCount deals you random hands and tells you the correct play instantly. Practice for free — 50 hands per day, no account required.
What Comes After Basic Strategy?
Basic strategy gets you to nearly break-even. To actually gain an edge over the casino, you need to learn card counting. Counting tells you when the remaining cards favor you, so you can bet more in those situations. Combined with perfect basic strategy, card counting gives you a 0.5-1.5% edge — enough to be profitable long-term.