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Guide · blackjack Updated 6 Nov 2026

Blackjack basic strategy: charts, rules and odds

Basic strategy tells you the least costly move for every hand against every dealer up-card. On a 3:2 table with standard rules it brings the house edge down to roughly 0.5%.

The chart only works on a good table. Check the blackjack payout, the soft 17 rule and doubling after a split before you play.

By Jean-Paul Uwizeye | Blackjack

Read the table rules first

Approximate effects from Wizard of Odds rule calculations
RuleGood for youCost when it goes the other way
Blackjack payout3:26:5 adds about 1.39%
Dealer on soft 17StandsHitting adds about 0.22%
Double after splitAllowedNot allowed adds about 0.14%
SurrenderLate surrenderNo surrender costs about 0.08%
DecksFewerEight decks cost about 0.5% more than one

The payout matters most. On RWF 500,000 of total bets, a 6:5 table costs about RWF 7,000 more than a 3:2 table with the same rules.

How to use a basic strategy chart

Charts have three parts: hard totals, soft totals (an ace counted as 11) and pairs. Find your hand down the side and the dealer's card across the top.

  • Always split aces and eights. Never split tens or fives.
  • Stand on hard 17 or more. Stand on 12 to 16 against a dealer 2 to 6 (hit 12 against 2 or 3), and hit against 7 or higher.
  • Double 10 and 11 against weaker dealer cards; double 11 against everything except an ace on most tables.
  • Do not take insurance.

Use a chart that matches the number of decks and the soft 17 rule of your table.

Live and RNG blackjack

The same chart works for both. RNG games reshuffle after every hand and deal much faster, so the same stake costs more per hour. Live tables deal far fewer hands per hour, and many use shuffling machines or cut the shoe early, which makes card counting pointless online.

Live variants such as Infinite Blackjack and Power Blackjack change some rules. Read the help screen of each game before you play.

Bonuses and blackjack

Blackjack often counts 10% or less toward bonus wagering, or is excluded. A bonus with 35x wagering at 10% contribution means betting 350 times the bonus on blackjack, which rarely makes sense. Cashback paid as cash suits blackjack players better. Our blackjack page lists casinos that carry the game.

Questions

Blackjack strategy: questions

Does card counting work in online blackjack?

Not in RNG games, which reshuffle every hand. Most live tables cut the shoe early or use shuffling machines, so the gain is small at best.

Is 6:5 blackjack ever worth playing?

Rarely. It adds about 1.39% to the house edge, more than all other common rule changes together.

Can I use a strategy chart while playing online?

Yes. Nothing stops you keeping a chart open beside the game.

Is insurance a good bet?

No, unless you count cards. It wins less than a third of the time from a full shoe but pays only 2:1.

How much money do I need to play blackjack?

Enough for at least 40 to 50 minimum bets per session, so a short losing run does not end your session at once.

Responsible gaming

Play only if you are 18+ and it stays fun

These rules apply on every page of this site. A young casino has less history to judge it by, so the limits matter more.

18+ only

Adults only, everywhere

You must be 18 or older, and older in some countries. A casino can ask for ID before your first withdrawal, and new casinos often do.

Responsible gaming
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Start small with an unknown casino

Deposit an amount you would accept losing to a failed withdrawal, and request a small cash-out early to see how the casino handles it.

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Limits

Set limits before the welcome offer

Bonus wagering keeps you playing longer. Set a deposit limit and a time limit in the account before you claim.

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