House Edge in Blackjack: What Each Table Rule Costs You

A 6 to 5 payout costs up to 1.74 points, about eight times a dealer hitting soft 17. Read the rule card and estimate the blackjack edge you face.

By TrumpCasino GuidesOctober 15, 20267 min read

A blackjack hand of ace and king on blue felt, the dealer showing a six, beside stacks of three and two red chips.

Jump to a section

01How does the house have an edge in blackjack?
02What each table rule adds to or removes from the edge
03Reading the rule card: what regulators make casinos print
04A table-side checklist
05Guide questions
How does the house win in blackjack?
What should you never do in blackjack?
What is the most successful blackjack strategy?
When to walk away from a blackjack table?
06More guides
07Sources and further reading

The house edge for blackjack is not a single number. Under a benchmark set of rules, played with basic strategy, Arnold Snyder's deck-by-deck tables put the house edge at 0.54% for a six-deck shoe and 0.57% for eight decks, and every rule printed on the table card moves that figure up or down. The biggest mover by far is the payout: a table where blackjack pays 6 to 5 costs the player between 1.71 and 1.74 percentage points compared with 3 to 2.

This guide breaks the house edge in blackjack down rule by rule, so you can read a table's layout and estimate the edge you are actually facing before you buy in.

How does the house have an edge in blackjack?

The house has an edge in blackjack because of the rule set, not luck: each rule on the table (the payout, when the dealer draws, what you may double and whether you can surrender) shifts your expected return, and the casino picks the combination.

Snyder's figures start from one benchmark game with fixed rules: the dealer stands on soft 17, you may double on any two cards, you may not double after splitting, and blackjack pays 3 to 2. With basic strategy, that game is close to even with one deck and drifts toward the house as decks are added.

Decks in the shoe	Player expectation	House edge
1	+0.02%	player ahead by 0.02%
2	-0.31%	0.31%
4	-0.48%	0.48%
6	-0.54%	0.54%
8	-0.57%	0.57%

If the table deals from a multi-deck shoe, the six and eight deck rows are your starting point. From there, the rules on the card add or subtract.

What each table rule adds to or removes from the edge

Snyder's rule-effect table gives each rule a value in percentage points of player expectation. A minus value is a cost to you and raises the house edge; a plus value lowers it. The figures are from Las Vegas Advisor's September 2022 republication.

Rule on the card	1 deck	2 decks	Multi-deck
Blackjack pays 6 to 5	-1.74	-1.71	-1.71
Dealer hits soft 17	-0.19	-0.20	-0.21
Double on 10-11 only	-0.26	-0.21	-0.18
Double after splits allowed	+0.14	+0.14	+0.14
Late surrender allowed	+0.02	+0.05	+0.08

To estimate a table, take the base figure for its deck count and add each line that applies. A six-deck shoe where the dealer hits soft 17 and you may double after splitting starts at the 0.54% base, loses 0.21 for the soft 17 rule and wins back 0.14 for doubling after splits. Add late surrender and you recover another 0.08.

The scale matters more than the arithmetic. The 6 to 5 payout costs roughly eight times what the dealer hitting soft 17 costs, and more than all the player-friendly rules in the table give back together. If you only check one thing on the card, check the payout.

Reading the rule card: what regulators make casinos print

You rarely have to guess the two largest rules, because US regulators require them on the felt. Under the Massachusetts blackjack layout rule, every table must state whether blackjack pays 3 to 2 or 6 to 5, and which dealer draw rule applies: the dealer draws to 16 and stands on all 17s, or the dealer must hit soft 17s (as of October 2026). The same layout must also show that insurance pays 2 to 1.

New Jersey works the same way through its administrative code. New Jersey's payout and wager rule sets standard blackjack at 3 to 2 and lets a separate 6 to 5 variation pay 6 to 5, with every 6 to 5 bet in multiples of $5 (as of October 2026). On standard tables, the casino may choose a draw option where the dealer stands on all 17s or one where the dealer hits soft 17, under New Jersey's dealer draw rule.

The 6 to 5 variation is where the rules stack up. On those tables the dealer must keep drawing until reaching a hard 17 or a hard or soft 18 or more, which means the dealer hits soft 17, and New Jersey's surrender rule bars surrender on any table offering the 6 to 5 variation. Using Snyder's multi-deck values, that is the 1.71 payout cost, plus the 0.21 soft 17 cost, plus the loss of the 0.08 that late surrender would have returned. Surrender itself, where offered, gives back half the wager.

Splitting rules are worth reading too. Under New Jersey's pair-splitting rule, a player who splits aces gets one card on each ace and cannot draw more.

A table-side checklist

Read the layout and the rule card in this order, largest effect first:

Blackjack payout. 3 to 2 or 6 to 5. This line outweighs everything below it.
Soft 17. "Dealer stands on all 17s" is better for you than "dealer hits soft 17".
Doubling. Doubling on any two cards beats doubling on 10-11 only, and doubling after splits is a plus.
Surrender. Allowed is a plus, and its value grows with the number of decks.
Decks. Fewer decks lower the base edge, but only if the other rules hold.

These values describe the game itself. Changing how much you bet from hand to hand does not appear anywhere in them, so no betting system moves the house edge.

Guide questions

How does the house win in blackjack?

Through the rules the table runs under. With a 3 to 2 payout and the dealer standing on soft 17, a six-deck game still leaves the house a 0.54% edge against a basic-strategy player, and every rule that favours the dealer adds to it. Over many hands that small percentage is what the casino keeps.

What should you never do in blackjack?

Never sit at a 6 to 5 table when a 3 to 2 table is open. The payout alone costs between 1.71 and 1.74 percentage points, and in New Jersey that table also has the dealer hitting soft 17 and offers no surrender.

What is the most successful blackjack strategy?

Basic strategy keeps the edge at the figures shown above, but it does not remove it in a multi-deck game. The other lever is table choice: a 3 to 2 payout, a dealer who stands on soft 17, doubling after splits and surrender each move the number in your favour. No betting system changes the rule values in the table.

When to walk away from a blackjack table?

Before you sit down, if the rule card shows the costly rules. A card that says blackjack pays 6 to 5 and the dealer hits soft 17 is telling you the edge is well above the benchmark game, and walking to a 3 to 2 table is the cheapest decision you can make.