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

Hard 18 vs dealer 8: the verdict

Q: Hit or stand on hard 18 against a dealer 8?

Basic strategy says Stand. A genuine coin-flip — the gap is under half a cent per $1. Your chance of winning with the best play is about 37.3% (push 35.9%). Full EV math for every action is in the table above.

STAND

The verdict is stand. Against a dealer 8, hard 18 does best by letting the dealer take the risk of busting.

The numbers

Action	Win	Push	Lose	EV per $1
Stand	37.3%	35.9%	26.7%	+0.106
Hit	19.4%	2.1%	78.5%	−0.591
Double	19.4%	2.1%	78.5%	−1.182

Why stand is correct

A dealer showing 8 busts 24.5% of the time, and that bust chance is doing the work here: standing wins 37.3% of hands without ever risking your own bust. Drawing a card would improve the total sometimes, but the bust risk and the hands you’d ruin cost more than they gain.

For context, a dealer 8 finishes on 17–20 about 68.6% of the time, on 21 6.9%, and busts 24.5%. 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 hit instead of stand costs about $1743 per 100 such hands at $25 a hand (−0.697 EV per dollar). The genuinely expensive error here is double: −1.288 per dollar, or roughly $3220 per 100 hands at the same stakes.

Does the rule set change it?

No — stand 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

18 against other dealer cards:

vs 2 vs 3 vs 4 vs 5 vs 6 vs 7 vs 9 vs 10 vs Ace

Other key hands vs a dealer 8:

16 vs 8 12 vs 8 15 vs 8 soft 18 vs 8 8,8 vs 8

Frequently asked

Do you stand on 18 against a dealer 8?

Yes — stand is the basic-strategy play for Hard 18 vs 8 (EV +0.106 per $1). Hit is the second-best option at −0.591.

What are the odds of winning with 18 vs 8?

Playing it correctly (stand), you win 37.3% of hands, push 35.9% and lose 26.7%.

Is it the same if the dealer hits soft 17?

Yes — under H17 rules the verdict is still stand.

Hit or stand on hard 18 against a dealer 8?

Basic strategy says Stand. A genuine coin-flip — the gap is under half a cent per $1. Your chance of winning with the best play is about 37.3% (push 35.9%). Full EV math for every action is in the table above.