What Is Basic Strategy in Blackjack?

Basic strategy is the mathematically optimal way to play every possible hand in blackjack. It tells you exactly when to hit, stand, double down, split, or surrender — based solely on your hand and the dealer's upcard. Following basic strategy doesn't guarantee wins, but it reduces the house edge to its absolute minimum, typically below 0.5% in favorable rule sets.

If you're serious about blackjack, learning basic strategy is non-negotiable. It's the foundation everything else is built on.

The Core Decisions You'll Face

Every hand in blackjack comes down to a handful of decisions:

  • Hit – Take another card.
  • Stand – Keep your current total.
  • Double Down – Double your bet and take exactly one more card.
  • Split – Separate a pair into two hands, each with a new bet equal to the original.
  • Surrender – Forfeit half your bet to exit a bad hand (not available everywhere).

Basic strategy gives you the statistically best choice for each decision, every time.

Key Basic Strategy Rules to Memorize

Hard Totals (No Ace, or Ace Counted as 1)

  • 8 or less: Always hit.
  • 9: Double against dealer 3–6; otherwise hit.
  • 10: Double against dealer 2–9; hit against 10 or Ace.
  • 11: Double against dealer 2–10; hit against Ace.
  • 12: Stand against dealer 4–6; hit otherwise.
  • 13–16: Stand against dealer 2–6; hit against 7 and above.
  • 17 or more: Always stand.

Soft Totals (Hand Contains an Ace Counted as 11)

  • Soft 13–14 (A-2, A-3): Double against dealer 5–6; otherwise hit.
  • Soft 15–16 (A-4, A-5): Double against dealer 4–6; otherwise hit.
  • Soft 17 (A-6): Double against dealer 3–6; otherwise hit.
  • Soft 18 (A-7): Double against 3–6; stand against 2, 7, 8; hit against 9, 10, Ace.
  • Soft 19–20: Always stand.

Pairs

  • Always split: Aces and 8s.
  • Never split: 10s, 5s, or 4s (generally).
  • Split 9s against dealer 2–6, 8–9; stand against 7, 10, Ace.
  • Split 7s against dealer 2–7.
  • Split 6s against dealer 2–6.
  • Split 2s and 3s against dealer 4–7.

Why Do Rules Vary by Casino?

Basic strategy charts shift slightly depending on specific table rules. Key variables include:

  • Number of decks in play (single-deck vs. 6-deck shoe)
  • Whether the dealer hits or stands on soft 17
  • Whether doubling after splits is allowed
  • Whether late surrender is offered

Always check the rules posted on the table before sitting down. A single-deck game with favorable rules can reduce the house edge dramatically compared to a 6-deck shoe with restrictive rules.

Common Mistakes Beginners Make

  1. Standing on 16 against a dealer 7–10 — This feels safe but is statistically wrong. Hit.
  2. Never splitting Aces — Always split them. Starting two hands with an 11 is a huge advantage.
  3. Splitting 10s — A total of 20 is one of the strongest hands in the game. Never break it up.
  4. Doubling down randomly — Only double in favorable situations outlined in the strategy chart.
  5. Playing hunches — Basic strategy is math, not intuition. Trust the numbers.

Practice Makes Perfect

Print out a basic strategy chart and drill it until the decisions become automatic. Many casinos allow you to reference a card at the table — take advantage of this while learning. The goal is to internalize the chart so every decision is instant and effortless.

Once you've mastered basic strategy, you'll have the foundation to explore more advanced techniques like card counting or shuffle tracking — but those come later. Start here.