What Does "Dealer Hits Soft 17" Mean?
A soft 17 is a 17 containing an ace counted as 11 (like A-6). H17 tables make the dealer take another card on it; S17 tables make the dealer stop. S17 is better for you — H17 adds about 0.2% to the house edge.
It's printed right on the felt — "Dealer must hit soft 17" or "Dealer stands on all 17s" — and most players never give it a glance. They should: it changes the house edge, the dealer's behavior on the most dramatic hands, and three cells of correct strategy.
Why hitting soft 17 helps the dealer
A soft 17 is a weak made hand — it beats nothing but a bust and pushes other 17s. When the rules force the dealer to hit it, the ace's flexibility means they can't bust on the next card (a ten just makes it a hard 17 again). The redraw turns many mediocre 17s into 18s, 19s, 20s, and 21s:
| Dealer shows ace | Final 17 | 18–21 | Bust |
|---|---|---|---|
| S17 (stands) | 18.9% | 64.5% | 16.7% |
| H17 (hits) | 8.3% | 71.7% | 20.1% |
Yes, the dealer busts a little more often under H17 — but look at the middle column: far more strong hands. The trade nets the house roughly +0.2% of edge. Over a weekend of play, that's real money, given away before you make a single decision.
The three strategy changes
The H17 and S17 charts differ in exactly three cells — all of them doubles you add against the H17 dealer:
- 11 vs Ace — double (S17: hit)
- A,7 vs 2 — double (S17: stand)
- A,8 vs 6 — double (S17: stand)
The logic: the H17 dealer's ace and 6 are slightly more vulnerable (more busts), so three borderline doubles tip over the line. If the table also offers surrender, H17 adds 17 vs ace and a couple of 15/17 surrenders — but for most games, those three doubles are the entire difference.
How to use this at the casino
- Read the felt before you sit. "Dealer stands on all 17s" is the better table, all else equal.
- Don't pay for S17 with a worse rule. An S17 table that pays 6:5 on blackjack is dramatically worse than an H17 table paying 3:2. Payout rule first, soft 17 rule second.
- Match your chart to the rule. Our strategy chart and trainer both toggle H17/S17 so you practice exactly the game you'll play.
Frequently asked questions
Can the dealer bust on a soft 17?
Not on the next card. Drawing a ten to A-6 doesn't make 27 — the ace re-counts as 1, making hard 17. The dealer can only bust after the hand has gone hard.
Do I hit my own soft 17?
Always — and against 3–6 you should double it. Standing on soft 17 is never correct for the player; it loses to every dealer 18+, and the free redraw can only help you.
Which rule do most casinos use?
H17 has become the standard in most US casinos, especially at lower-limit tables. S17 survives mainly at higher-limit tables. That's exactly why it's worth scanning the felt before sitting down.