Single Deck Blackjack

Reviewed by Marco Presti · Updated Jul 10, 2026

Single Deck Blackjack is, on paper, the best game in the building: one deck, 3:2 on blackjack, and a house edge that drops to a level almost nothing else on a casino floor can match. It is also the variant with the most traps in how it is sold, so the fine print matters more here than anywhere else.

How the rules differ from classic blackjack

• One deck of 52 cards, typically reshuffled every hand online. Card removal has a huge effect: every ace dealt visibly changes the odds, which is why casinos guard this format so carefully.
• The dealer hits soft 17 — the standard tax on single-deck games, worth about 0.20% to the house.
• Blackjack pays 3:2 in the version reviewed here. This is the number to verify before you sit down anywhere else: many single-deck tables pay 6:5, which hands the house an extra 1.4% and makes the game worse than any eight-deck shoe. A 6:5 single-deck game is a marketing exercise, not a player-friendly table.

What that means for the house edge

With the 3:2 payout intact, this game runs at about 0.15% — the lowest edge of any variant we review. The single deck is doing almost all of that work. Even the hit-17 rule and tighter doubling can’t drag it back to the pack: you are giving up roughly a third as much as on a typical six-deck table.

When to play it — and how to adjust

Play it whenever the 3:2 payout is confirmed. Single-deck basic strategy differs from the shoe chart in a handful of composition-driven spots, and they are worth learning:

• Double hard 8 against a dealer 5 or 6.
• Double 11 against a dealer ace.
• Stand on 7-7 against a dealer 10 — two of your sevens are gone, so the 21-making tens are disproportionately dangerous to the dealer, not you.

Expect the format to be sold differently, too. Land-based single-deck tables often carry higher minimums and a faster pace — fewer players, quicker rounds — so your hourly exposure can be double that of a shoe game even at the same stake. Online that pressure disappears, which makes the digital version a gentler way to enjoy the best odds in the building.

One caveat for online play: with a reshuffle every hand there is nothing to count, so treat card counting as a live-casino skill and this as a pure basic-strategy game. The trainer’s single-deck mode uses the same H17 rules and will flag the shoe-game habits — like hitting that 7-7 against a ten — that cost money here.

Practise this game free