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Hit, stand or double against the dealer — blackjack pays 3:2.Theoretical return 99.5% · up to 2.5×
Blackjack rules in short
Blackjack is a card game against the dealer. The aim is not to hit exactly 21 — it is to finish closer to 21 than the dealer without going over. Go over and you lose immediately, whatever the dealer is holding.
Everyone gets two cards. You see both of yours and one of the dealer's. Then you decide whether to draw or stand. Once every player has acted, the dealer plays their hand by a fixed rule — they make no decisions at all.
That is what makes blackjack unusual: it is the lowest house edge table game in the casino. Played correctly, the house edge sits around 0.5%, many times lower than a typical slot. Played badly it multiplies — the decisions genuinely matter.
Card values
Card values in blackjack are simple, except that the ace is worth two things at once.
| Card | Value |
|---|---|
| 2–10 | Face value |
| Jack, queen, king | 10 points |
| Ace | 1 or 11 — whichever helps at the time |
A hand where the ace counts as 11 is called soft: "soft 17" is ace + 6. A soft hand cannot bust on a single card, because the ace drops to one when needed. A hard hand is one with no ace, or where the ace already counts as one.
Blackjack is an ace plus a ten-value card in the first two cards. It is the best hand and normally pays 3:2 — €15 profit on a €10 bet.
How a hand plays out, step by step
- The bet. You bet before the deal. There are no other decisions before the cards come out.
- The deal. You get two cards face up; the dealer gets one face up and one face down (on European tables the dealer takes the second card only at the end).
- Blackjack check. If the dealer's upcard is an ace or a ten, they check immediately for blackjack. If they have it, the hand is over.
- Your play. Hit, stand, double or split. You may draw as many cards as you like until you pass 21 or stand.
- The dealer's play. The dealer turns over the hole card and plays by rule: draw to 16, stand on 17.
- Settlement. Closest to 21 wins. Equal totals are a push — your stake comes back.
That is the whole game. Unlike baccarat and roulette, where no decisions exist after the bet, in blackjack you decide on every hand — which is exactly why it can be played well or badly.
What the table pays
| Result | Payout | On a €10 bet |
|---|---|---|
| Blackjack (3:2 table) | 3:2 | €15 profit |
| Blackjack (6:5 table) | 6:5 | €12 profit |
| Ordinary win | 1:1 | €10 profit |
| Push (tie) | Stake returned | €0 |
| Insurance, when the dealer has blackjack | 2:1 on the insurance bet | €10 (on a €5 bet) |
| Surrender | Half the stake back | −€5 |
| Bust | Immediate loss | −€10 |
Two rows deserve attention. Busting loses immediately, even if the dealer goes on to bust as well — that single rule is the casino's edge in blackjack; without it the game would favour the player. And a push is not a loss: equal totals return your stake.
The most important number on the table: 3:2 or 6:5
Before you learn any strategy, look at the table itself. Blackjack pays either 3:2 or 6:5, and the difference is not cosmetic.
At a 6:5 table the same blackjack returns €12 on a €10 bet instead of €15. That single change raises the house edge by roughly 1.4 percentage points — more than all the strategy in the world wins back. If the felt says "Blackjack pays 6 to 5", find another table.
What the dealer does
The dealer has no choices. They follow the rule printed on the table: draw to 16, stand on 17. Some tables add "dealer hits soft 17", which is slightly worse for you because it gives the dealer one more chance to improve.
That fixedness is precisely why blackjack can have an optimal strategy: the dealer's behaviour is entirely predictable, so your best move depends on only two things — your hand and the dealer's upcard.
How likely the dealer is to bust
The whole logic of basic strategy reduces to this table. The dealer's upcard tells you how likely they are to go over 21 themselves.
| Dealer upcard | Dealer busts | What it means for you |
|---|---|---|
| 2 | 35.3% | Weak card — don't risk it |
| 3 | 37.6% | Weak |
| 4 | 40.3% | Weak |
| 5 | 42.9% | Weakest |
| 6 | 42.1% | Weakest |
| 7 | 26.0% | Strong — you must improve your own hand |
| 8 | 23.9% | Strong |
| 9 | 23.3% | Strong |
| 10, jack, queen, king | 21.4% | Very strong |
| Ace | 11.7% | Strongest |
This is where the whole 12–16 rule comes from. If the dealer shows 2–6, they bust nearly four times in ten. You do not need to take the risk — you stand and let them do it. If they show 7 or more they probably will not bust, and your 15 wins nothing, so you draw.
Your five decisions
Hit. Take another card. Always correct on a hard 8 or less.
Stand. Take no more. Hard 17 and above — always stand.
Double down. Double your bet and receive exactly one card. The strongest move when you hold 11 against a weak dealer card.
Split. If your two cards are the same rank you can play them as two hands by adding a second bet. Two rules hold almost always: always split aces and eights, never split tens or fives.
Surrender. Some tables let you fold and take back half your bet. It is only worth it in three spots — hard 16 against a dealer 9, 10 or ace, and hard 15 against a ten.
Basic strategy: hard hands
These charts are blackjack basic strategy — the mathematically optimal move for each situation. They assume the usual multi-deck table where the dealer stands on soft 17 and doubling after a split is allowed.
| Your hand | Dealer 2–6 | Dealer 7–9 | Dealer 10 or ace |
|---|---|---|---|
| 8 or less | Hit | Hit | Hit |
| 9 | Double (3–6), else hit | Hit | Hit |
| 10 | Double | Double (7–9) | Hit |
| 11 | Double | Double | Double (10), hit against an ace |
| 12 | Stand (4–6), else hit | Hit | Hit |
| 13–14 | Stand | Hit | Hit |
| 15 | Stand | Hit | Hit (or surrender against 10) |
| 16 | Stand | Hit | Hit (or surrender against 9, 10, ace) |
| 17 or more | Stand | Stand | Stand |
The hardest row is 16. It is the worst hand in blackjack: too weak to win, too high to draw to safely. The correct play does not make that hand good — it makes it slightly less bad.
Basic strategy: soft hands
A soft hand contains an ace counting as 11. These are played completely differently, because a single card cannot bust them — which is why doubling appears far more often here.
| Your hand | Dealer 2–6 | Dealer 7–8 | Dealer 9, 10 or ace |
|---|---|---|---|
| Soft 13–14 (ace + 2 or 3) | Double (5–6), else hit | Hit | Hit |
| Soft 15–16 (ace + 4 or 5) | Double (4–6), else hit | Hit | Hit |
| Soft 17 (ace + 6) | Double (3–6), else hit | Hit | Hit |
| Soft 18 (ace + 7) | Double (3–6), else stand | Stand | Hit |
| Soft 19–20 (ace + 8 or 9) | Stand | Stand | Stand |
Soft 18 is the most frequently misplayed hand in the game. Eighteen feels like enough to stand on, but against a dealer 9, 10 or ace it is a losing hand — drawing is mathematically better even though it feels wrong.
Basic strategy: splitting pairs
| Pair | What to do |
|---|---|
| Aces | Always split |
| Eights | Always split |
| Tens, face cards | Never split — 20 is already nearly the best hand |
| Nines | Split against 2–6 and 8–9; stand against 7, 10 and ace |
| Sevens | Split against 2–7, otherwise hit |
| Sixes | Split against 2–6, otherwise hit |
| Fives | Never split — play as a 10 and double against 2–9 |
| Fours | Split only against 5–6, otherwise hit |
| Twos and threes | Split against 2–7, otherwise hit |
Two rules are worth memorising even if you remember nothing else. Always split aces, because two aces as one hand is 12 — a bad hand — while two separate aces are two shots at blackjack. Always split eights, because 16 is the worst hand at the table and two hands starting from eight are each better than one 16.
A worked hand, step by step
Say you bet €10.
- The deal. You are dealt 8 and 3 → a hard 11. The dealer's upcard is a 6.
- The decision. From the chart: hard 11 against a weak card → double down. You put another €10 out and receive exactly one card.
- The card. A 9 arrives → you have 20. You cannot act again.
- The dealer's play. The dealer turns over an 8 for a total of 14. The rule forces a draw. A 10 arrives → 24, bust.
- The result. Both bets win at 1:1 → +€20.
The same hand without doubling would have won €10. Doubling is not gambling harder — it is the spot where the maths says put more out, and recognising those spots is most of blackjack's edge.
Table rules that change the house edge
Two blackjack tables side by side can cost very different amounts. The figures are percentage points added to or subtracted from the house edge.
| Table rule | Effect on house edge |
|---|---|
| Blackjack pays 6:5 (instead of 3:2) | +1.39 |
| Dealer hits soft 17 | +0.22 |
| Single deck instead of eight | −0.48 |
| Doubling after a split allowed | −0.14 |
| Doubling restricted to 9–11 | +0.09 |
| Late surrender allowed | −0.08 |
| Re-splitting aces allowed | −0.08 |
| Dealer takes no hole card (European rule) | +0.11 |
Read the top row again. One single rule — the 6:5 payout — costs more than all the others combined, and more than perfect basic strategy can win back against sloppy play. Table selection matters more than strategy in blackjack, exactly as the number of zeros on the wheel matters more in roulette.
Insurance is a trap
When the dealer's upcard is an ace you are offered "insurance": a side bet of half your stake that pays 2:1 if the dealer has blackjack.
It sounds sensible and it is a bad bet. The chance that the hole card is a ten is lower than a 2:1 offer implies, and insurance carries a house edge close to 7% — many times worse than the main game. The only situation where it is justified is card counting, which does not work online because the deck is shuffled after every hand.
The short rule: never take insurance, not even when you hold blackjack yourself.
Side bets and what they cost
Nearly every live table offers side bets. The payouts are large and the house edge is several times higher than the main game.
| Side bet | On what | Typical house edge |
|---|---|---|
| Insurance | The dealer has blackjack | ~7% |
| Perfect Pairs | Your first two cards are a pair | 4–11% |
| 21+3 | Your two cards plus the dealer upcard make a poker hand | 3–8% |
| Bust It | The dealer busts | 5–8% |
| Any Pair / Hot 3 and others | Various combinations | 5–10% |
Compare that with the main game: 0.5%. One €5 side bet per hand costs on average as much as ten hands of the base game. If you play blackjack precisely because of its low house edge, side bets are exactly the thing that eats it.
Blackjack variants
| Variant | What is different | Who it suits |
|---|---|---|
| Classic (Vegas, multi-deck) | Dealer has a hole card and stands on 17 | The default, and the best rule set |
| European blackjack | Dealer takes the second card only at the end | The most common online form |
| Atlantic City | Late surrender, double after split | A player-friendly rule set |
| Infinite Blackjack | Unlimited players behind one hand | When the table is full |
| Free Bet | Free doubles and splits, but a dealer 22 pushes | Looks generous, is dearer |
| Blackjack Switch | Two hands, swapping cards allowed | For experienced players |
| Lightning / Power Blackjack | Multipliers, modified rules | Highest house edge in the group |
One rule holds across every variant: any "bonus" in the game is paid for somewhere. Free Bet offers free doubles, then compensates with a rule making a dealer 22 a push — and that single line costs more than the free doubles give back.
Live blackjack versus the software version
| Live table | Software version (RNG) | |
|---|---|---|
| Dealer | A real person on video | A random number generator |
| Pace | ~40–60 hands per hour | As fast as you click |
| Minimum bet | Usually €1–5 | Often €0.10–1 |
| Seats | 5–7 (unlimited on Infinite) | Always available |
| Using a strategy chart | Allowed, but time is limited | Unlimited thinking time |
| Best for | The experience, a slower pace | Drilling strategy |
The software version is clearly better for learning basic strategy: unlimited time to consult the chart and a smaller minimum bet. At a live table the betting window is 12–15 seconds, so learn the chart before you sit down, not at the table.
Bet sizing and bankroll
A low house edge does not mean low variance. Hands resolve quickly and losing runs are normal. A practical rule of thumb: one bet should not exceed 1–2% of the money set aside for the session, and you need headroom for doubles and splits — a single hand can demand two or four times the opening bet.
On a €200 bankroll that means a €2–4 opening bet. Playing a €5-minimum table on a €200 budget means one bad run is the whole session.
Blackjack versus other table games
| Game | Best house edge | RTP | Do player decisions matter? |
|---|---|---|---|
| Blackjack with basic strategy | ~0.5% | ~99.5% | Yes — every move counts |
| Baccarat, Banker bet | 1.06% | 98.94% | No |
| Roulette, French (La Partage) | 1.35% | 98.65% | No |
| Roulette, European | 2.70% | 97.30% | No |
| Slots | 2–10% | 90–98% | No |
Blackjack is the only table game where your decisions genuinely change the result — and the only one where playing badly costs you. Baccarat cannot be misplayed; in blackjack, random play raises the house edge to roughly 2%, quadrupling it.
Blackjack terms
| Term | Meaning |
|---|---|
| Hit | Take another card |
| Stand | Take no more cards |
| Double down | Double the bet and take exactly one card |
| Split | Play a pair as two separate hands |
| Surrender | Fold the hand for half the stake |
| Push | A tie with the dealer — the stake is returned |
| Bust | Over 21 — an immediate loss |
| Soft hand | A hand where the ace counts as 11 |
| Hard hand | A hand with no ace, or where the ace counts as one |
| Upcard | The dealer's face-up card |
| Hole card | The dealer's face-down card |
| Shoe | The dealing box, usually 6–8 decks |
Common mistakes
- Sitting at a 6:5 table. The most expensive mistake in blackjack. Check the payout before your first bet — it costs more than all the rest of your strategy combined.
- Taking insurance. A house edge near 7%. Never, including to "insure" your own blackjack.
- Not splitting eights. Sixteen is the worst hand at the table; two hands starting from eight are both better.
- Splitting tens. Twenty is nearly the best hand available. Breaking it up for two mediocre hands is a pure loss.
- Standing on soft 18 against a strong card. Against a dealer 9, 10 or ace, 18 is a losing hand.
- Playing side bets. A 3–11% house edge next to the base game's 0.5%.
- Playing on feel. Every deviation from basic strategy costs money. The chart is not advice, it is the result of a calculation.
Can you count cards online?
No. Card counting works because the cards already dealt change the composition of what remains — when plenty of tens are left, the player's edge is higher. Online that premise does not hold: in the software version the deck is shuffled after every hand, so there is no memory to count.
Live tables are much the same. Most studios use a continuous shuffling machine or change the shoe long before the last cards are reached. The practical conclusion is simple: your entire edge in blackjack comes from table selection and basic strategy, not from tracking cards.
Where to play blackjack
Online there are two forms. Software blackjack is one-on-one against the dealer, fast and usually cheaper to sit down at. Live blackjack is a video feed with a real dealer — slower, but the table rules are visible and the pace is more human.
Either way, check three things before you play: the blackjack payout (3:2 or 6:5), whether the dealer hits soft 17, and whether doubling after a split is allowed. Those three lines decide the table's real house edge.
- Blackjack casinos — casinos that carry blackjack
- Live casinos — tables with a real dealer
- Table game casinos — a wider table-game selection
Rules for the other table games: baccarat is simpler and decision-free, roulette is faster with a higher house edge. For a short definition, see the blackjack glossary entry.
What are the rules of blackjack in the simplest terms?
Does blackjack always pay 3:2?
What is blackjack basic strategy?
Is insurance worth taking?
Which hands should always be split?
What is a soft hand?
What is the house edge in blackjack?
Are side bets like 21+3 or Perfect Pairs worth it?
Can you count cards online?
Can you clear a bonus playing blackjack?
Blackjack, bonuses and the real return
Blackjack's low house edge makes it unusual where bonuses are concerned — and not always in a good way. Precisely because a good player loses less here than on a slot, casinos limit how much table games contribute to wagering. A slot bet typically counts 100%; a blackjack bet counts 10%, or nothing at all.
In practice that means playing blackjack with a bonus is rarely sensible: the wagering requirement effectively multiplies by ten, and the terms often forbid raising your stake to double down. If you plan to play table games, check the bonus terms before depositing, not after.
How blackjack compares with the other games
Baccarat is blackjack's closest relative: both are played against the dealer and both carry a low house edge. The difference is the decisions — in baccarat you choose only the bet and the rest is fixed, while in blackjack every move affects the outcome. If you want a low house edge without learning a strategy, baccarat is simpler; if you want your decisions to count, blackjack is the only table game where they truly do.
Roulette runs at 2.7% on a European wheel — over five times the edge of well-played blackjack. Slots typically sit between 4% and 8%, depending on the game's RTP.
What a low house edge does not mean
A 0.5% edge is not a winning formula. It means that over a long session you lose an average of fifty cents per hundred euros staked — less than elsewhere, but you still lose. No strategy makes blackjack profitable for the player; it makes losing slower.
Play only with money whose loss changes nothing, and set deposit and time limits before you start. If the game has stopped being entertainment, start at responsible gambling.