Updated 2026-07-30 · 8 decks · S17 · DAS · methodology

Soft 18 (A,7) vs dealer 3: the verdict

Q: Hit or stand on soft 18 against a dealer 3?

Basic strategy says Double (else stand). A genuine coin-flip — the gap is under half a cent per $1. Your chance of winning with the best play is about 50.5% (push 7.8%). Full EV math for every action is in the table above.

DOUBLE

Basic strategy says double. Against a dealer 3, this hand is strong enough to put double the money on the table.

The numbers

Action	Win	Push	Lose	EV per $1
Double	50.5%	7.8%	41.6%	+0.178
Stand	50.9%	13.0%	36.1%	+0.148
Hit	50.4%	8.2%	41.4%	+0.090

Why double is correct

Doubling wins almost exactly as often as hitting (50.5% vs 50.4%) — the difference is you have twice the money riding on a favorable spot. Against a dealer 3 (bust chance 37.4%), that extra bet is the whole point: EV +0.178 doubled beats +0.090 hit.

For context, a dealer 3 finishes on 17–20 about 51.1% of the time, on 21 11.5%, and busts 37.4%. Those dealer outcomes are the same no matter what you hold — the whole game is choosing the action whose distribution fits them best.

What the mistake costs

Choosing stand instead of double costs about $73 per 100 such hands at $25 a hand (−0.029 EV per dollar). The genuinely expensive error here is hit: −0.087 per dollar, or roughly $218 per 100 hands at the same stakes.

Does the rule set change it?

No — double holds across every common configuration: Vegas Strip, Atlantic City with late surrender, H17 games and European no-hole-card tables all agree here.

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Related spots

soft 18 against other dealer cards:

vs 2 vs 4 vs 5 vs 6 vs 7 vs 8 vs 9 vs 10 vs Ace

Other key hands vs a dealer 3:

16 vs 3 12 vs 3 15 vs 3 8,8 vs 3 A,A vs 3

Frequently asked

Do you double on soft 18 against a dealer 3?

Yes — double is the basic-strategy play for Soft 18 (A,7) vs 3 (EV +0.178 per $1). Stand is the second-best option at +0.148.

What are the odds of winning with soft 18 vs 3?

Playing it correctly (double), you win 50.5% of hands, push 7.8% and lose 41.6%.

Is it the same if the dealer hits soft 17?

Yes — under H17 rules the verdict is still double.

Hit or stand on soft 18 against a dealer 3?

Basic strategy says Double (else stand). A genuine coin-flip — the gap is under half a cent per $1. Your chance of winning with the best play is about 50.5% (push 7.8%). Full EV math for every action is in the table above.