Blackjack Basic Strategy, Hand by Hand

Written by Marcus Hale Editor, ReelTeller

Played correctly on a table with decent rules, blackjack hands the house an edge of about half a percent. Few casino games come close to that. The figure carries a big condition, though: it assumes you make the right call on every single hand, including the awkward ones where instinct points the other way.

Those right calls are what basic strategy is. Computer simulations have played out every pairing of a player hand against each possible dealer upcard millions of times, and the strategy card records which action loses least (or wins most) in each case. Nothing about it depends on hunches, streaks or reading the dealer.

Check the table rules before you learn a single cell

The most expensive line in blackjack is printed on the felt, not on any chart: what a natural pays. A 3:2 payout is the fair standard. A 6:5 payout adds roughly 1.4 percentage points to the house edge, which on its own is close to three times the cost of the whole game played well.

Put a £20 stake on each. A blackjack on the 3:2 table returns £30 profit, on the 6:5 table £24. You made no worse decision on the second table; the rules simply took £6 off your best hand. Most players never look.

The strategy card

Find your hand in the left column and the dealer's face-up card along the top row. H means hit, S means stand, D means double down (if the table refuses a double, hit instead), and P means split the pair.

Hard hands (no ace, or an ace forced to count as one)

Soft hands (an ace still counting as eleven)

Pairs

The logic underneath the card

Every cell can be explained. Three ideas account for nearly all of them, and once they click the card becomes much easier to remember.

Small dealer cards (4, 5 and 6) are fragile

The dealer has no choices: they keep drawing until they reach 17. Starting from a small card, that rule pushes them over 21 around four times in ten. So when you hold 12 to 16 against those cards you stand, because the likeliest way for you to lose is to bust first. You let the dealer take the risk.

Tens dominate the deck

Of the 52 cards in a deck, 16 count as ten (the tens and the three face cards). That is why the card treats the next draw as most likely to be a ten, and why it assumes the dealer's hidden card probably lifts their total by ten. A dealer 10 or ace showing is a strong position for them.

You double when the dealer is weak

Doubling on 11 makes sense against nearly every upcard because a single ten lands you on 21. Doubling on 9 is different: your hand is still mediocre, so you only commit extra money when the dealer's 3 to 6 makes a bust likely.

Six calls that cost players the most

Card counting online: why it does not carry over

In a land-based casino, counting is a real (if demanding) technique. You track whether the undealt cards are rich in tens and aces, and raise your stake when they are. With a hand-dealt shoe and deep penetration, that tilts the odds slightly your way.

Online, the conditions that make it work are missing. RNG blackjack shuffles a fresh virtual deck for every hand, so there is nothing to track. Live dealer tables either use continuous shufflers or cut the shoe early enough that any count resets before it is useful. And the wide swings in stake size a counter needs are exactly what risk teams flag on an account.

Courses that promise to teach online counting are selling a method for a game that no longer exists in that form.

Side bets and other extras

Perfect Pairs, 21+3, Lucky Ladies and Bust It all sit beside the main box, and all of them carry a house edge somewhere between about 3% and 12%. The main hand, played well, costs a fraction of that.

Because the edge is so much higher, a small side bet can cost more than a large main bet. Adding one to every hand quietly removes the main reason for choosing blackjack over a slot in the first place.

A pre-seat checklist for live tables

• Natural payout. Only sit at 3:2. If the table pays 6:5, the rest of this list does not matter.
• Soft 17 rule. A dealer who stands on soft 17 is about 0.22 points kinder.
• Decks in the shoe. Eight is the common online setup and the least favourable of the usual options.
• Doubling after splits. A small gain, and it costs you nothing to look.
• Surrender. Uncommon online; worth having when it appears.
• Limits. Offshore lobbies often take much higher maximum stakes on the same studio feed than UK sites do.

Variants to know, and one to approach carefully

Lightning Blackjack adds random payout multipliers, paid for with an extra fee on each hand. It plays like blackjack but prices like something else, so judge it as its own game.

Infinite Blackjack lets any number of players share one dealer hand under standard rules. It is slower, which for most people is a benefit rather than a drawback.

Party and entertainment tables often pay 6:5 on a natural. The music and hosts are paid for out of that missing 1.39 points.

Stakes and how long a balance holds out

A low edge only helps if the balance lasts long enough for it to show. Blackjack swings less than a slot, but a run of seven or eight lost hands is ordinary, and it will happen to you regularly.

A practical ceiling is a base stake of 2% of whatever you have set aside for the session. Go bigger and an everyday losing streak ends the evening before the small edge has any bearing on the result.

UK tables and offshore tables

The live blackjack in UK-licensed lobbies and offshore ones frequently comes from one studio, Evolution, which means the table rules often match. The usual differences are the stake ceiling and which variants are offered. Our blackjack not on GamStop guide sets out which sites carry which tables.

If you joined GamStop because gambling had become a problem, leave the exclusion in place. GamCare offers free, confidential support on 0808 8020 133.

Learning the card in stages

Trying to memorise the full card at once rarely works. Take it in this order and you capture most of the value early:

1. Split aces and eights, every time. A pair of aces makes two strong starts; a pair of eights escapes the worst total in the game.
2. Never split tens. Twenty wins far too often to break up.
3. Turn down insurance. Whatever you hold, it is a separate wager with a heavy edge.
4. Stand on hard 17 or more. No exceptions, whatever the dealer shows.
5. Hard 12 to 16: stand against a dealer 2 to 6 (hit 12 against 2 or 3), hit against 7 or higher.

Those five rules take a typical player from around a 2% edge to well under 1%. The remaining cells polish the last fraction. None of it rescues a 6:5 table, which is why the natural payout remains your first check at any table.