KEY TAKEAWAYS
Blackjack is a card game played against the dealer, and the goal is simple: finish with a hand total closer to 21 than the dealer’s, without going over 21. Number cards count at face value, face cards count 10, and an ace counts as either 1 or 11. A winning hand pays 1 to 1, and a two-card 21 (a natural blackjack) pays 3 to 2 at standard tables.
Each round follows the same order. Players place a bet, receive two cards, and then decide whether to take more cards, stay put, or use options such as doubling down and splitting. The dealer plays last, following fixed rules with no choices. Because the player’s decisions matter, skill can lower the casino’s advantage, although it never removes it.
This guide covers card values, how a round works, what every player option means, the dealer’s rules, payouts with worked examples, and the mistakes that cost beginners the most. Rules that differ between casinos are flagged as such.
Blackjack Rules: Goal and Card Values
The objective is to beat the dealer, not to reach exactly 21. A hand wins by finishing closer to 21 than the dealer’s hand, or by the dealer going over 21. A hand that goes over 21 is called a bust and loses immediately, even if the dealer later busts too. That ordering is one reason the casino holds an edge, and how the house edge works is explained in a separate guide.
Card values are easy to learn. Cards 2 through 10 count as their number, and J, Q and K each count as 10. The ace is flexible: it counts as 11 unless that would bust the hand, in which case it counts as 1.
A hand with an ace counted as 11 is called a soft hand, because the player cannot bust by taking one more card. For example, A♥ 6♣ is a soft 17. A hand with no ace, or with an ace forced to count as 1, is a hard hand. Soft hands give the player more freedom to draw, since a card that would bust a hard 17 simply turns the ace into a 1.
Blackjack is dealt from one or more 52-card decks, and the number of decks varies by table. Players compete only against the dealer, never against one another. A natural blackjack is an ace plus any 10-value card as the first two cards, and it beats any other 21 made with three or more cards.
How a Round of Blackjack Works
A round starts when every player places a bet in the betting spot. The dealer then gives each player two cards and takes two cards, one face up and one face down. The face-up card is the upcard, and the hidden one is the hole card. Players use the upcard to judge how strong the dealer’s hand might be.
Player options
Starting with the first seat, each player chooses an action. Hit means take another card; stand means keep the current total. A player may hit as many times as the total stays at 21 or less. Other options depend on the table rules:
Double down lets a player double the bet in exchange for exactly one more card, usually on a strong starting total. Split applies to a pair, such as two 8s: the player makes a second bet equal to the first and plays two separate hands. Surrender, where offered, lets a player give up half the bet instead of playing the hand. Insurance is a side bet offered when the dealer’s upcard is an ace, covered later in this guide. Rules for doubling after a split and for surrender differ by casino.
The dealer’s rules
After all players finish, the dealer reveals the hole card and plays by fixed rules. The dealer must hit any total of 16 or less and stand on a hard 17 or higher. The one rule that varies is soft 17. At S17 tables the dealer stands on soft 17, and at H17 tables the dealer hits it. Hits on soft 17 raise the house edge by about 0.2 percentage points. If a player and the dealer finish with the same total, the hand is a push and the bet is returned.
Worked Examples: A Natural and a Standard Win
Suppose a player bets $10 and is dealt A♠ and K♥, a natural blackjack, while the dealer shows 9♦. At a 3:2 table the natural pays $15 in profit, because $10 × 1.5 = $15, and the player keeps the original $10. At a 6:5 table the same hand pays only $12, since $10 × 1.2 = $12, which is $3 less every time a natural appears.
Now take a different hand. A player bets $10 and is dealt 8♣ and 7♦, a hard 15, while the dealer shows 10♥. The player hits and receives 5♠, for a total of 20, then stands. The dealer turns over 8♠, for a total of 18 (10 + 8), and stands because 18 is above 16. The player’s 20 beats the dealer’s 18, so the hand pays 1 to 1, a profit of $10.
The same hand could have gone wrong. Had the player drawn a 9 instead, the total would be 24, a bust, and the $10 would be lost before the dealer played. That is why strategy depends on both the player’s total and the dealer’s upcard.
Blackjack Payouts and House Edge
Most outcomes in blackjack pay even money, while a natural pays more. The table below shows the usual payouts on a $10 bet. Payouts for insurance and surrender follow the usual conventions but can vary by casino, so confirm them at the table.
| Outcome | Payout | Result on a $10 bet |
|---|---|---|
| Winning hand | 1 to 1 | Win $10 |
| Natural blackjack (3:2 table) | 3 to 2 | Win $15 |
| Natural blackjack (6:5 table) | 6 to 5 | Win $12 |
| Push (same total as dealer) | Bet returned | $0 |
| Surrender (where offered) | Lose half the bet | Lose $5 |
| Insurance (up to half the bet, if it wins) | 2 to 1 | Win $10 on a $5 insurance bet |
The house edge depends on the rule set. With basic strategy at a standard 3:2 table, the edge is typically around 0.5%, depending on the number of decks, S17 or H17, doubling rules and surrender. A 6:5 payout raises the edge by about 1.4 percentage points, which is roughly $14 more lost per $1,000 wagered.
Insurance deserves its own warning. It pays 2 to 1 and wins when the dealer’s hole card is a 10-value card. Using the infinite-deck approximation, that chance is 4 in 13, so the expected result is 2 × 4/13 − 9/13 = −1/13, or about −7.7%. Insurance is a high house-edge side bet for a player who is not counting cards.
Common Blackjack Mistakes and Myths
The most expensive habit is taking insurance by default. Because it carries an expected loss of about 7.7%, it costs far more than the main game, and a strong hand does not make it a better bet.
The second is sitting at a 6:5 table without noticing. The sign can look similar to a 3:2 sign, yet it raises the house edge by about 1.4 percentage points. Reading the payout before buying in costs nothing.
A third mistake is playing by instinct. Standing on 12 through 16 against every dealer card, or hitting only when “the dealer looks weak,” ignores the math. Basic strategy gives a fixed best action for every combination of player hand and dealer upcard, and following it lowers the house edge to its minimum for the rules in use.
Finally, many players believe a “due” card will arrive after a losing streak. Past hands do not make a win more likely, and increasing bets after a loss changes only the size of the swings, never the edge.
What to Check at the Table
Before sitting down, read the table placard and the felt. Confirm that a natural pays 3 to 2, and note whether the dealer stands or hits on soft 17, whether doubling after a split is allowed, and whether surrender is offered. Each of these rules changes the house edge slightly, and none of them is universal.
Check the table minimum and maximum against your budget, and decide in advance how many hands you want to play. Blackjack can move quickly, so the total amount wagered per hour can exceed what a player expects. Many casinos permit a basic strategy card at the table, though policy varies, so ask the dealer before using one.
Set a budget before the first hand and stop when it is spent. Blackjack can carry one of the lowest edges in the casino, but a lower edge is still a cost, and no table changes that.
Where to Go Next
With the core rules in place, the next step is to understand why the numbers behave as they do. Every payout and rule in blackjack shifts the house edge by a small, measurable amount, so the house edge fundamentals are worth revisiting once the rules feel familiar.
From there, the most useful topics to study are doubling, splitting and basic strategy, because those decisions matter most to the final cost of playing. Each is a bounded rule with its own logic, and the best action in every spot comes from the same fixed math rather than from feel.
Later topics include how insurance and surrender work, and how variants such as Spanish 21 change the rules and the edge. Understanding the base game first makes each variation much easier to follow.
Frequently Asked Questions



