Reading the felt before you sit down
Most blackjack arguments at a table start because a player learned one set of rules and the table in front of them runs another. The dealer's procedure is printed on the layout or on a small rules placard near the shoe, and it is the single most important thing to check before you buy in. The phrase "house blackjack rule" usually means one specific thing: what the dealer must do on a 17.
On most tables the dealer stands on all 17s. On others the dealer hits a soft 17, which is any 17 containing an ace counted as 11, such as ace-6. The two procedures look nearly identical for the first few hands, then a soft 17 appears and the entire table's rhythm changes. A dealer who hits soft 17 takes another card, which can turn a 17 into a stronger hand or a bust, and that extra card changes the long-run return of the game slightly in the house's favour compared with standing on all 17s.
Every other rule on the table matters too, but the dealer's 17 procedure is the one players ask about because it is the rule the player can never control. You cannot tell the dealer to stand. The table rules do that.
The object, stated plainly
Blackjack is a comparing card game. You are not playing against the other people at the table, and their decisions do not change your cards. You are playing your hand against the dealer's hand. The objective is to finish with a hand total closer to 21 than the dealer's total, without your total exceeding 21. If your hand exceeds 21, you lose immediately, regardless of what the dealer later draws. If the dealer exceeds 21, every player hand still in the round wins.
Card values are fixed. Numbered cards count as their face value. Face cards count as 10. An ace counts as either 1 or 11, whichever helps the hand at that moment. A hand with an ace counted as 11 is called soft, because the ace can drop to 1 if a later card would otherwise bust it. A hand without an ace, or with an ace forced to count as 1, is hard.
From buy-in to first card
You cannot put cash directly onto the betting circle. The dealer cannot take cash from your hand, and the table cannot make change from the chip tray. The sequence is:
- Place your cash on the felt in front of you, not in the betting circle, and wait for the dealer to spread it and call out the amount.
- The dealer exchanges the cash for chips at the table's posted minimum and maximum.
- You place a wager in the circle before any cards are dealt. Once the first card leaves the shoe, the bet is fixed.
- Cards are dealt face up in most shoe games, and you do not touch them. In some pitch games you may hold the cards, but the table rules will say so.
Buying in mid-shoe is allowed at most tables, but you sit out the hand in progress and join on the next round. The dealer's tray is not a cash register, and asking for change after a hand has started is the fastest way to slow the whole table down.
How the dealer's hand is built
The dealer acts last and has no choices. The dealer's procedure is a fixed script. The dealer deals two cards to each player and two to themselves, one face up and one face down in most games, or both face up in some variants. The dealer then resolves each player's hand in turn before revealing the hole card and playing the dealer hand.
The fixed script is what the house rule describes. The dealer must draw on any total of 16 or lower. The dealer must stand on any hard 17 or higher. The only variation is the soft 17: stand on all 17s, or hit soft 17. There is no discretion, no reading of the table, no choosing based on what the players hold. The dealer follows the placard.
When the dealer's upcard is an ace or a ten-value card, many tables offer insurance. Insurance is a side bet that the dealer's hole card completes a blackjack. It is a separate wager, usually costing half the original bet, and it pays 2 to 1 when the dealer has blackjack. It is a bet on the dealer's hidden card, not on your hand, and it carries its own house edge.
Your decision points
Where the dealer has a script, you have choices. Each choice changes the shape of your hand and the amount at risk.
- Stand: keep your total and end your action.
- Hit: take another card. You may hit again until you stand or bust.
- Double down: add a wager equal to your original bet and receive exactly one more card. The hand then stands.
- Split: when your first two cards are a pair, you may separate them into two hands, each with its own bet equal to the original. You then play each hand independently.
- Surrender: on some tables you may forfeit half your bet and end the hand before playing it further. The rule is not universal and is printed on the layout where offered.
Doubling and splitting rules vary by table. Some tables allow doubling on any two cards, others only on certain totals. Some allow doubling after a split, others do not. Some allow re-splitting aces, most do not. These variants are not decorative; they change the expected cost of playing the game.
Where the house edge sits
The house edge is the mathematical advantage the operator holds on a given game, expressed as a percentage of each wager. House edge and RTP are complements: they sum to 100% for the same game. In blackjack, the edge is not one number printed on the felt. It is the product of the entire rule set: the number of decks, the dealer's 17 procedure, doubling restrictions, splitting restrictions, surrender availability, and the payout on a natural blackjack.
A table that pays a natural blackjack at 3 to 2 returns more to the player than a table that pays 6 to 5, for the same hand. A table where the dealer stands on all 17s costs the player less in the long run than a table where the dealer hits soft 17, all else equal. None of this changes what happens on the next hand. It changes the rate at which a bankroll is expected to erode over many hands.
| Rule variant | What it means at the table | Direction of the change |
|---|---|---|
| Dealer stands on all 17s | Dealer stops on any 17, hard or soft | Better for the player than hitting soft 17 |
| Dealer hits soft 17 | Dealer draws on ace-6 and similar soft 17 totals | Increases the house edge compared with standing |
| Natural pays 3 to 2 | A two-card 21 pays one and a half times the bet | Better for the player than 6 to 5 |
| Natural pays 6 to 5 | A two-card 21 pays 1.2 times the bet | Materially worse for the player |
| Double after split allowed | You may double a hand created by splitting | Better for the player than disallowing it |
| Surrender offered | You may forfeit half the bet before playing the hand | Better for the player when used correctly |
The table above compares rule variants, not casinos. The exact set in force is printed on the table or available from the dealer before the first card. If a table uses an automatic shuffler, a continuous shuffler, or a hand-shuffled shoe, that changes the dealing mechanics and the pace of play, not the dealer's 17 procedure.
Strategy charts follow the rule set
Published basic-strategy charts derive from the specific rule set in use. A chart built for a six-deck shoe where the dealer stands on all 17s is not correct for a double-deck pitch game where the dealer hits soft 17, and it is not correct for a table that pays 6 to 5 on a natural. The chart is a set of conditional instructions: given your total, the dealer's upcard, and the table's rules, it names the action with the lowest expected loss.
That last phrase matters. Basic strategy does not make blackjack a winning game. It selects the least expensive action at each decision point under a given rule set. The house still holds an edge on the game as a whole. A strategy chart that does not state which rule set it assumes is incomplete, and using it at the wrong table can turn a sound decision into a costly one.
Procedural mistakes that cost new players
The first mistake is buying in with cash placed directly in the betting circle, or handing cash to the dealer. The dealer cannot take it, and the hand must pause while the floor resolves what the player intended. The second is touching the cards in a shoe game. Face-up shoe games are dealt and played without player contact, and reaching for a card will draw an immediate correction. The third is signalling unclearly. A tap on the felt means hit, a flat hand waved palm-down means stand, and a vague gesture can be read as either. The dealer acts on the signal given, not the one intended.
A fourth mistake is sitting down at a 6 to 5 table without noticing the payout. The rule is printed on the layout, often in small text on the arc of the table, and it changes the value of every natural blackjack you are dealt. Checking it before the first bet is not suspicious; it is the same diligence you would apply to any posted price.
FAQ
Does the house blackjack rule change if I play online?
Online blackjack runs on the same fixed dealer procedure, but the rule set is usually displayed in the game's information panel or help screen rather than on a felt layout. The dealer's 17 procedure, the number of decks, the natural payout and the doubling and splitting rules are all stated there. Read that panel before the first hand, because an online table can switch rule sets between game variants while looking visually similar.
Why does the dealer sometimes draw on 17 and sometimes not?
The dealer is following the table's posted procedure. If the placard says the dealer stands on all 17s, a soft 17 is a stand. If it says the dealer hits soft 17, the dealer draws on an ace-6 but still stands on a hard 17. The difference is not dealer discretion; it is a rule that varies between tables and between operators, and it is stated before play begins.
Can I ask the dealer what the house rule is before I bet?
Yes, and it is the correct time to ask. The dealer can state the 17 procedure, the natural payout, and the doubling and splitting rules. Asking before the first card is standard table practice. Asking after a disputed hand has been resolved is too late, because the round has already been settled under the posted rule.
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This article is general information about how these mechanics work. It is not legal advice and not a recommendation to gamble or to use any particular operator. Availability and legality differ by jurisdiction — check the rules that apply where you are.