Blackjack House Edge Explained: How Rules Change Your Odds

The starting point

With perfect basic strategy, a typical multi-deck game where the dealer stands on soft 17, blackjack pays 3 to 2 and you can double after splitting has a house edge of around 0.5%. Playing by instinct instead of strategy usually costs several times more.

The rule that matters most: the payout

A blackjack paying 6 to 5 instead of 3 to 2 adds about 1.4 percentage points to the house edge. It's by far the most expensive rule change, and the main thing to check before you sit down.

Other rules that move the edge

The dealer hitting soft 17 adds about 0.2 points. No doubling after splitting costs a little more. More decks slightly favour the house, so a single-deck game with good rules is better than an eight-deck shoe. Late surrender, where you can give up half your bet, helps the player a little.

What this means for you

Choose 3 to 2 tables, prefer dealer stands on soft 17, avoid side bets and insurance, and follow basic strategy. That keeps the house edge close to its minimum, though it never reaches zero.

Play the right moves with the chart

FAQ

What is the house edge in blackjack?

Around 0.5% with basic strategy and good rules, and much higher if you play by instinct or accept a 6 to 5 payout.

Can you beat the house edge?

Not with basic strategy alone. It reduces the edge but doesn't remove it.

Related guides

When Should You Split 2s and 3s in Blackjack?Pairs of 2s and 3s look weak, but splitting them against the right dealer cards gains value. Here's exactly when, and how table rules change it.Read the guide Blackjack 3:2 vs 6:5: Why the Payout Matters So MuchA 6:5 blackjack payout looks like a small change but costs you far more than most rules. See the maths and a simple example.Read the guide Does the Martingale System Work? The Maths ExplainedDoubling your bet after every loss looks like a sure win. Here's why the Martingale fails, with real numbers on losing streaks and table limits.Read the guide Should You Split 8s Against a Dealer 10?Pair of 8s against a 10 is one of blackjack's worst spots. Here's why basic strategy usually says split, when it doesn't, and what it costs you.Read the guide What Does “Dealer Stands on Soft 17” Mean?Soft 17, S17, H17: what the rule printed on blackjack tables means, how it changes the house edge and which decisions it affects.Read the guide Is Blackjack Insurance Ever Worth It?Insurance looks like protection, but it's a side bet with a high house edge. Here's the maths behind it and why basic strategy says no.Read the guide

Strategy and maths reduce the house edge, but never remove it. 18+, play responsibly.