Blackjack Odds and House Edge: What Every Rule Really Costs

Every blackjack table advertises the same game and charges a different price. The price is the house edge, it is set by the rules card, and unlike almost everything else in a casino, it can be calculated to the decimal before you ever place a bet.

Blackjack’s house edge runs near 0.5% with basic strategy on a standard six-deck 3:2 game, and every rule change moves that number by a published, knowable amount: 6:5 blackjack payouts add about 1.39 percentage points, a dealer who hits soft 17 adds 0.22, and missing surrender or double-after-split adds more. This page prices every common rule, lets you estimate any table with an interactive tool, and shows the bust math and dealer-outcome numbers that drive the whole game, computed by the same verified engine that builds our strategy charts.

Last reviewed: September 2026. Rule costs on this page carry their published sources and verification dates; the bust and dealer tables are computed outputs, dated in place.

House Edge, Translated Into Dollars

The house edge is the share of your total wagers the casino keeps on average over the long run. A 0.5% edge means fifty cents per $100 wagered, and wagered is the load-bearing word: bet $10 a hand for 80 hands and you have wagered $800, so the expected cost of that hour is about $4, whatever your actual result. Session results swing far wider than the average, which is what makes the game a game; the edge is the gravity underneath the swings.

For blackjack, the number is conditional on two things. The first is you: the half-percent figure assumes correct basic strategy on every hand, and unstudied play typically gives up several times more. The second is the rules card. The published benchmark for generous rules, the so-called liberal Vegas rule set, prices at 0.28%, while a common six-deck game with the dealer standing on soft 17, double after split, and late surrender prices near 0.36%. Add a rough rule or two and an identical-looking table quietly costs triple.

House edge and return-to-player are the same fact in different clothes: a 0.5% edge is a 99.5% RTP. Blackjack quoted either way sits at the cheap end of the casino, which our house edge explainer covers across every major game. What that comparison cannot do is price your specific table, because blackjack’s edge moves rule by rule. That is what the rest of this page is for.

The neighborhood context makes the half percent vivid. Single-zero roulette charges about 2.7% on every bet, the double-zero wheel about 5.26%, baccarat’s best bet about 1.06%, and slots commonly run 4% and up. Per $10 hand, well-played blackjack costs about a nickel in expectation. The same $10 on an American roulette spin costs about 53 cents. Blackjack is the only game on that list where your decisions, and the fine print on the felt, decide which of those prices you actually pay.

What Each Rule Really Costs

Every common rule variation has a published price, measured in percentage points of house edge. The table below is the menu, and one line dominates it: the blackjack payout. Nothing else on the card comes within a factor of five of the 6:5 penalty.

Two readings of that table are worth pausing on. Deck count, the rule players obsess over most, barely moves a shoe game: four decks versus eight is a few hundredths of a point. And the rules that sound like fine print, doubling restrictions and missing surrender, cost real fractions of a point that stack. A table with 6:5 payouts, a hitting dealer, and no surrender charges over 2%, which is a different game wearing the same felt.

The table also hands you a reading order for any rules card, because the lines are worth checking in cost order. Payout first, always: 3:2 or walk. Soft 17 second, since it is the biggest remaining swing and it changes a few correct plays. Then double-after-split and surrender, the two quiet rules that reward tables generous enough to offer them. Deck count last, as a tiebreaker between otherwise identical games. Five lines, ten seconds, and you know the price of the table to within a few hundredths of a point before you bet.

Price Any Table With the Estimator

Set the toggles to match a table’s rules card and the estimator sums the published effects into an estimated house edge, with the dollars-per-$100 translation underneath. The presets cover the games you will actually meet, from the standard six-deck shoe to the 6:5 configurations worth walking past.

Treat the output as a well-sourced estimate rather than a decree: rule effects interact slightly, so a stacked configuration can drift a few hundredths of a point from the simple sum. For choosing between real tables, that precision is more than enough, because real tables differ by whole tenths and sometimes whole points.

Your Bust Odds, Hand by Hand

A hard 12 busts on the next card about 31% of the time, and each point you add to your total adds roughly eight points of bust risk, up to a hard 16 that busts on about 62% of hits. These five numbers explain most of the strategy chart’s hard-total rows on their own.

Notice what the 31% means in context: hitting a 12 is far safer than it feels, because only a ten-value card breaks it, and that is why the chart hits 12 against a dealer 2 or 3 rather than hiding. At the other end, the 62% on hard 16 is why surrender exists and why standing against a weak dealer card is so attractive: any total from 12 up can win without improving if the dealer busts first.

What the Dealer’s Upcard Really Predicts

The dealer busts about 42% of the time showing a 6 and under 17% showing an ace, and the full distribution between those poles is the skeleton key to basic strategy. Here is where every upcard ends up.

Read the bust column and the chart’s logic falls out. Upcards 4 through 6 bust roughly two hands in five, which is why your weak totals stand and your good totals double into them. Upcards 7 and up finish with a made hand roughly three times in four, which is why 14s and 15s cannot afford to wait against them. And the 7 column shows the sharpest cliff in the game: a dealer 7 lands on exactly 17 more than a third of the time, which any 18 beats, and that is precisely why the chart stands soft 18 against a 7 but hits it against a 9.

The ace row looks strangely tame, and the reason is the peek. These numbers are conditioned on the dealer checking for blackjack and not finding one, because when the hole card completes a natural the round ends before your decisions matter. Survive the peek and the monster under the bed is already gone: an ace that did not make blackjack busts one hand in six and lands its 21s from three or more cards. That conditioning is also why an ace still outperforms a ten for the dealer, and why the chart never relaxes against either.

One more thing the table quietly explains: how the house wins a game where it busts this often. Averaged across upcards the dealer breaks more than one hand in four, yet you act first, and every hand you bust is lost before the dealer draws a card. The order of play converts your bust risk into the house’s income, and every defensive row of the strategy chart is a response to exactly that.

The 6:5 Payout, Worked Out in Full

Blackjacks arrive about once every 21 hands, roughly 4.8 per 100. On a $10 table, each one pays $15 at 3:2 and $12 at 6:5, a $3 haircut per blackjack. Multiply it out: about $14 lost per 100 hands, on $1,000 of total action, which is where the published figure of 1.39 percentage points comes from. One line of fine print converts the best-priced game in the casino into one of the more expensive table games in the room.

The trap is presentation. 6:5 tables tend to advertise their friendliness: lower minimums, single-deck signage, a livelier feel. A single deck at 6:5 is a worse buy than eight decks at 3:2 by a wide margin, and no combination of otherwise good rules can pay back what the payout line takes. The habit that protects you costs five seconds: read the payout line first, and if it does not say 3:2, the rest of the rules card does not matter.

A cousin of the 6:5 discount hides inside a polite-sounding offer: even money on your blackjack when the dealer shows an ace. Accepting it locks in a 1:1 payout instead of risking a push, and it is mathematically identical to buying insurance, a bet our rules guide prices as a straightforward loser. Declining even money keeps your blackjacks worth their full 3:2 over time. The pattern is the same in both cases: any offer that trims the premium payout is the house buying your best hand at a discount.

Variance: Why Sessions Ignore the Average

A half-percent edge predicts almost nothing about tonight. Blackjack results per hand are close to a coin flip with occasional 1.5x and 2x payouts mixed in, so streaks in both directions are routine and an evening’s result is usually many times larger than its expected cost in either direction. Winning a session is common. That is variance doing what variance does, and it is the fuel every casino runs on: the average only asserts itself across thousands of hands.

The practical use of this section’s math is budgeting, and the arithmetic is short. Hands per hour times average bet gives hourly action; action times edge gives expected hourly cost. A $10 player at a quick online pace of 80 hands an hour runs $800 an hour through a 0.5% game for an expected cost of about $4, and through a 2% game for about $16. Pick the session you can afford at the swings’ scale, then let the low edge keep the long-run bill small. That is the entire financial strategy of recreational blackjack, and it is the honest one: cheaper hours, never profitable ones.

Bankroll sizing follows from the same picture. Cold streaks of five or six losing hands are ordinary, doubles and splits occasionally put two or three bets on a single round, and a buffer of a few dozen bets is what lets a session absorb all of that without forcing you to quit at the bottom or chase at the top. Size the session bankroll in bets rather than dollars, pick the bet so the bankroll fits money you can lose without caring, and the variance becomes what it is supposed to be: the entertainment you are paying that hourly price for.

Play Responsibly

Odds pages carry a particular risk: understanding the math can feel like controlling it, and no amount of understanding changes the direction of the edge. Fast online play compounds small percentages into real money, and the same arithmetic that prices an hour of play prices a habit. Set deposit and session limits at the casino level where they enforce themselves, size bets so the swings stay entertainment, and if the numbers on this page ever stop feeling like a menu and start feeling like a system to crack, step back. The resources below are free and confidential.

Blackjack Odds FAQ

The odds questions players actually ask, answered with the same sourced numbers used across this page.

Keep Going

The odds tell you what the game costs; the chart tells you how to pay the minimum. Both live with the rest of the guides in the blackjack section hub.