What is the house edge in blackjack?

With perfect basic strategy, the house edge is approximately 0.5% — one of the lowest in any casino game. Without strategy, it rises to 2–4%.

A Blackjack (Natural) is an Ace plus any 10-value card (10, J, Q, K) dealt in the first two cards. It usually pays 3:2. If both player and dealer have Blackjack, it's a push.

When should I always Split?

Always split Aces (two weak 1-point hands become two strong starting 11s) and always split 8s (16 is the worst hand — two 8s give you two fresh starts).

Is Insurance worth taking?

No. The dealer has a 10-value hole card roughly 30.8% of the time when showing an Ace. Insurance pays 2:1 but you need over 33% to break even — it's a losing bet long-term.

What's the difference between 3:2 and 6:5 Blackjack?

A 3:2 table pays $150 on a $100 Blackjack; a 6:5 table pays only $120. This seemingly small difference adds about 1.4% to the house edge. Always play 3:2.

How to Play Blackjack — Rules, Basic Strategy & Tips 2025

Blackjack has one of the lowest house edges in the casino — but only if you play correctly. Here’s everything you need to know to get started.

Game Objective

Get a hand total as close to 21 as possible without going over (busting), while beating the dealer’s hand.

Card Values

Card	Value
2–10	Face value
J, Q, K	10 points
Ace	1 or 11 (your choice)

Soft hand: Contains an Ace counted as 11 (e.g., Ace + 6 = Soft 17). Hard hand: No Ace, or Ace must count as 1 to avoid busting (e.g., 10 + 8 = Hard 18).

How a Round Works

Players and dealer each receive two cards (dealer shows one card face-up, one face-down)
Players take turns making decisions
After all players act, dealer reveals the hole card and plays by fixed rules
Compare totals — closest to 21 without busting wins

The Four Core Actions

Action	Description
Hit	Take another card
Stand	Keep your current total
Double Down	Double your bet, take exactly one more card
Split	Split two same-value cards into two separate hands

Additional Options

Insurance — offered when dealer shows Ace; pays 2:1; statistically not worth it
Surrender — forfeit half your bet to exit the hand (if offered)

Dealer Rules

The dealer has no choices:

16 or less: Must hit
17 or more: Must stand (some tables require hitting Soft 17 — check before you sit)

Basic Strategy Quick Reference

For a standard 6-deck game (H = Hit, S = Stand, D = Double, P = Split):

Hard Hands

Your Total	Dealer shows 2–6	Dealer shows 7–A
8 or less	H	H
9	D (else H)	H
10–11	D (if higher than dealer)	H or D
12–16	S	H
17+	S	S

Always Split

Two Aces — always split; each Ace becomes an 11-point starting hand
Two 8s — always split; 16 is the worst hand, two 8s give two fresh starts

Never Split

Two 5s — treat as 10 and double down instead
Two 10s — 20 is an excellent hand; don’t risk it

Payout Comparison

Outcome	3:2 Table	6:5 Table
Blackjack on $100	$150 profit	$120 profit
House edge (basic strategy)	~0.5%	~1.9%

Always choose a 3:2 table.

Table Rule Comparison

Rule	Player-Friendly	Player-Unfriendly
Blackjack payout	3:2	6:5
Dealer Soft 17	Stand (S17)	Hit (H17)
Number of decks	1–2	6–8
Surrender allowed	Yes	No
Double after split	Yes	No

Three Practical Tips

Learn basic strategy — it’s the single biggest impact on your results. Carry a strategy card; most casinos allow it.
Find a 3:2 table — 6:5 tables look the same but cost you roughly 1.4% extra per hand.
Set a stop-loss — decide your maximum session loss before you sit. Walk away when you hit it.