House edge,
ranked.
Blackjack ranges from the lowest house edge in the casino (under 0.2%) to one of the highest if you sit at the wrong table. The difference is six rules and one payout. Below: every rule ranked by impact, every common variant ranked by edge, and the math that turns a 0.4% game into a 3% game.
Every rule that changes the math
Baseline: 6-deck S17 DAS late surrender, 3:2 blackjack payout (~0.41% house edge with perfect basic strategy). The deltas below show how each rule change shifts the house edge from that baseline. Negative is better for the player; positive is worse. Stack them to compose any specific table.
| Rule change | Δ edge | Why it matters |
|---|---|---|
| 6:5 blackjack payout instead of 3:2 | +1.39% | Cuts the natural blackjack payout from $1.50 per $1 to $1.20 per $1. A 1.39% house-edge tax on a game that started at half a percent. The single biggest rule trap on the floor; never play 6:5. |
| Dealer hits soft 17 (H17) instead of standing | +0.20% | Dealer makes more 17s. Six chart cells flip — notably hard 11 vs A becomes a Double, hard 15 / 17 / pair 8s vs A become Surrender, and soft 18 vs 2 / soft 19 vs 6 both gain a Ds. Vegas Strip standard; many Evolution VIP rooms. |
| No double after split (no DAS) | +0.14% | Some splits stop being +EV without the option to double the post-split hand. Pair-splitting lows like 2,2 / 3,3 / 6,6 against weak dealer cards revert to Hit. |
| No double on 9 (only 10–11) | +0.13% | Some online tables (especially in regulated EU markets) restrict doubling to 10–11 only. Loses the +EV double on 9 vs 3-6 — small per-rule impact, but stacks with other restrictions on tight tables. |
| European no-hole-card (ENHC) | +0.11% | Dealer takes the second card after players act. If the dealer ends up with blackjack, doubles and splits made by players lose the additional money — those plays should be avoided against an ace or 10. |
| No late surrender | +0.08% | Worst hands (hard 15 vs 10, hard 16 vs 9-10-A) lose the half-bet escape. Replaces R with H and Rs with S in the chart. |
| No resplit aces | +0.07% | After splitting aces, you usually receive only one card per ace; if that card is another ace, most tables prevent re-splitting. Common rule, small impact. |
| 8 decks instead of 6 | +0.02% | More decks dilute the player edge from 10s and aces in the shoe. Tiny — a basis point or two — but real over volume. |
| 4 decks instead of 6 (S17 DAS) | −0.02% | Slightly better for the player than 6-deck. Differences only show at composition-dependent level; total-dependent chart is unchanged. |
| 2 decks instead of 6 | −0.18% | Meaningful improvement. Several chart cells flip — notably pair 7,7 vs 8 becomes a Hit (was Split), and hard 11 vs A becomes a Double (was Hit). Rare in crypto-casino live blackjack. |
| Single deck (1D) | −0.48% | The lowest house edge on the floor with otherwise-standard rules. Multiple chart cells flip due to the strong "effect of removal" on a single deck. Almost never paired with 3:2 in a live setting; most 1D tables are 6:5 (which more than wipes out the 0.48% gain). |
Common rule combinations, ranked
The combinations you actually run into on the floor, ranked best to worst. The gap between the top and the bottom is wider than the entire house edge of most other casino games — what table you sit at matters more than what charts you memorize.
Why this one rule eats your edge
A natural blackjack pays $1.50 per $1 bet at a 3:2 table. Drop to 6:5 and it pays $1.20. That extra 30 cents per blackjack disappears straight into the house edge.
Naturals occur on roughly 4.83% of hands. The math: 0.0483 × $0.30 lost per $1 bet ≈ +1.39% house edge, independent of every other rule. That single payout change takes the canonical 0.41% game to a 1.80% game — worse than European roulette, and three times worse than the worst video poker paytable on the floor.
The single rule: never play 6:5 blackjack. The table in the next pit pays 3:2, even at the same operator.
6:5 vs 3:2 math (per $1 bet)
Natural blackjack frequency ≈ 4.83%
3:2 payout per BJ = +$1.50
6:5 payout per BJ = +$1.20
Difference per BJ = $0.30
Edge gained by house = 0.0483 × $0.30
≈ +$0.01393 (+1.39%)Pick a rule set, see the chart
The interactive chart on the strategy page renders the right chart for whichever rule combination you pick — or click a casino logo to fast-switch to whatever rule set their primary blackjack offering uses. Each variant chip carries its own house edge.
| Variant | House edge | Where it shows up |
|---|---|---|
| 6-deck S17 | ~0.41% | The default reference chart. What most regulated live-dealer tables run, including Evolution's Classic Speed Blackjack and the standard Pragmatic / Playtech multi-seat live tables on Stake, BC.Game, Cloudbet, and Bitcasino. |
| 6-deck H17 | ~0.62% | Vegas Strip standard. Some Evolution live tables run H17 too (notably the higher-limit Salon Privé rooms and some VIP variants). H17 costs the player ~0.20% extra house edge vs S17 and shifts six cells in the chart: hard 11 vs A becomes a Double, hard 15 / 17 / pair 8s vs A become Surrender, soft 18 vs 2 and soft 19 vs 6 become Double-else-Stand. |
| 8-deck S17 | ~0.43% | Common online live-dealer setup, especially Evolution's "Infinite Blackjack" and some Stake / Roobet live rooms. 8-deck differs from 6-deck S17 DAS at composition-dependent level only — total-dependent chart is identical, EV ~1bp worse. |
| 1-deck | ~0.18% | Used by some operator-Original RNG blackjack variants (notably Stake Originals Blackjack). Single-deck shifts the chart at multiple cells — splitting 4s and 6s, doubling 11 vs A, hitting 12 vs 4, plus several pair-splitting changes — and is the player-friendliest deck count when paid 3:2. |
Why blackjack is solvable
Blackjack is one of three games on the casino floor where the house edge is computable to four decimal places under a fixed rule set. The other two are video poker and the basic wagers in baccarat. Slots, roulette specials, and any streak-based table side bet all have published edges, but they don't depend on player decisions — blackjack does, and the published edges assume optimal play.
The dealer's strategy is fixed: hit until 17 (or 18 in H17 for soft hands), then stop. Knowing this, every player decision can be modeled as a probability distribution. The EV of each cell in the basic strategy chart is the expected return for the action with the highest expected value at that point — every other action is worse, often meaningfully so.
The 0.41% baseline house edge is what remains after the player has played perfectly under 6-deck S17 DAS LS rules. Drop the chart and that edge balloons: an unstudied player runs roughly 2.5% under the same rules. The basic strategy chart is the single highest-EV move available in any casino game.
The remaining 0.41% is what you're paying to participate under those rules. Below it requires card counting; above it is ignorance — and ignorance taxed at 2.5% over the $50–$500 bet sizes most live tables run is real money over even short sessions.