Blackjack Dealer Rules: What the House Must Do, Every Time
New players study their own decisions and treat the dealer as an opponent who's thinking too. The dealer isn't. Every hit and every stand on the house side is forced by a printed rule, which means the dealer's behavior is perfectly predictable - and perfectly exploitable. Here is the complete script the house plays by.
The Two Rules That Govern Everything
Strip away the ceremony and dealer play is two lines:
- 16 or less: must hit. No exceptions, no judgment, no reading the table. A dealer showing 16 against your 15 hits, even though standing would win.
- 17 or more: must stand. Hard or soft, 17 through 21, the dealer stops - with exactly one variation, covered next.
The dealer cannot split, cannot double, cannot surrender, and cannot deviate. Whatever the players do, however the shoe is running, the script is the script.
The One Variation: Soft 17
The only decision point in dealer rules was made by the casino before you sat down: what happens on soft 17 (an Ace counted as 11 plus 6). S17 tables have the dealer stand; H17 tables have the dealer hit. It's printed on the felt: "Dealer must stand on all 17s" or "Dealer hits soft 17."
H17 is better for the house by about 0.22% - the extra draw improves the dealer's hand more often than it busts it - and it has become the default across most American casinos. It also shifts six cells on your side of the felt; the H17 vs S17 guide lists them, the soft 17 strategy guide covers your own soft 17, and the strategy chart has an H17 toggle.
The Hole Card and the Peek
American blackjack deals the dealer two cards immediately: the upcard face up, the hole card face down. When the upcard is an Ace, the dealer offers insurance (decline it), then checks the hole card through a blind table reader that only signals blackjack-or-not. With a ten showing, the check happens without the insurance offer. A dealer natural ends the hand at once, which protects you from splitting and doubling into a hand that was already lost.
European-style games deal no hole card at all until players finish. The difference is not cosmetic: with no peek protecting your doubles and splits against an Ace or 10, correct strategy pulls back several aggressive plays. If you play online "European Blackjack," the standard American chart is slightly wrong for it.
How Often the Dealer Busts, by Upcard
Because dealer behavior is scripted, the bust probability for every upcard is a fixed, known number (6-deck game, dealer stands on soft 17, rounded):
| Dealer Upcard | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | A |
|---|---|---|---|---|---|---|---|---|---|---|
| Bust chance | 35% | 37% | 40% | 42% | 42% | 26% | 24% | 23% | 21% (23%*) | 12% (17%*) |
* Overall rates count a dealer blackjack as a hand that did not bust. Because the dealer peeks, by the time you act against a 10 or an Ace a blackjack has already been ruled out, and the bust rate for the hands you actually play is about 23% and 17%.
This one row of numbers is the skeleton of all basic strategy. The 2-6 upcards bust more than a third of the time, so you stand on your stiff hands and let the forced hit do its work; 7 through Ace make a pat hand far more often, so you hit, double less, and surrender the worst matchups. The 5 and 6 are the weakest cards in the game - the reason the chart doubles and splits so aggressively against them.
Why "No Choices" Is Your Whole Edge
A predictable opponent can be solved. Because the dealer's response to every situation is known in advance, the best player response to every upcard can be computed exactly - that computation is basic strategy, and it's why the chart is arithmetic rather than opinion. The house compensates with the ordering rule (you bust first, you lose first) and keeps about half a percent against perfect play. Every scrap of that comes from position, not from any decision a dealer makes.
Frequently Asked Questions
Always. The dealer must hit any total of 16 or less, with no discretion - even when every player has already busted, even when standing would win. Dealer play is fully scripted by house rules; the dealer never makes a decision.
No. Every standard game has the dealer stand on 18, hard or soft. The only soft total with any variation is soft 17: S17 tables have the dealer stand, H17 tables have the dealer hit, and the felt always says which.
No. Those options belong to players only. The dealer just draws to a fixed total: hit through 16, stand on 17 and up (with the soft 17 exception where noted). That asymmetry is what player strategy exploits - you have choices and the house doesn't.
No - equal totals push and your bet is returned. The house edge doesn't come from ties; it comes from ordering. You act first, so when you bust, you lose immediately, even if the dealer busts moments later.
In American games the dealer checks for blackjack only when showing an Ace or a ten-value card, and the peek is done blind through a table reader that reveals nothing else. Outside those checks the hole card stays unknown to everyone, dealer included, until players finish.