Online blackjack for real money is one of the best-value games at a legal US online casino. With the right rules and correct basic strategy, the house edge can drop to around half a percent, which is far lower than slots, roulette or most side bets. This guide covers how online blackjack works, the rules that change your odds, a complete basic strategy, live dealer versus digital tables, and where you can legally play in the US.
Casino Funk does not run games or take bets. Everything here is educational. Blackjack is still a game with a house edge, so no strategy guarantees a profit.
Key takeaways
- With 3:2 blackjack, good rules and basic strategy, the house edge is roughly 0.4% to 0.5%.
- A 6:5 blackjack payout adds about 1.4% to the house edge; avoid those tables.
- Never take insurance: it carries a house edge of about 7.4% in a 6-deck game.
- Card counting does not work on digital tables, which reshuffle every hand.
- Real-money online blackjack is legal in NJ, PA, MI, WV, CT, DE and RI for players 21+ inside those states.
Online blackjack at a glance
| Item | Details |
|---|---|
| Goal | Beat the dealer’s hand without going over 21 |
| Typical house edge | About 0.5% with basic strategy and good rules; 2% or more with poor play or 6:5 tables |
| Blackjack payout | 3:2 is standard; avoid 6:5 tables |
| Formats online | Digital (RNG) tables and live dealer tables |
| Legal US states | NJ, PA, MI, WV, CT, DE, RI |
| Age | 21+ |
How online blackjack works
Each player and the dealer start with two cards. Number cards count at face value, face cards count as 10, and an ace counts as 1 or 11. A hand with an ace counted as 11 is called a soft hand, for example ace and 6 is soft 17. An ace with any 10-value card on the first two cards is a blackjack.
You act before the dealer. Your main choices are:
- Hit: take another card.
- Stand: keep your total.
- Double down: double your bet and take exactly one more card.
- Split: turn a pair into two separate hands with a second equal bet.
- Surrender: where offered, give up half your bet and end the hand.
The dealer has no choices. In most online games the dealer must draw to 16 and stand on 17. Whether the dealer hits or stands on soft 17 is one of the rules that changes your odds.
Blackjack rules that change the house edge
Not all blackjack tables are equal. Before you sit down, open the game rules or help screen and check these points:
| Rule | Better for you | Worse for you | Approximate effect |
|---|---|---|---|
| Blackjack payout | 3:2 | 6:5 | 6:5 adds about 1.4% to the house edge |
| Soft 17 | Dealer stands (S17) | Dealer hits (H17) | H17 adds about 0.2% |
| Double after split | Allowed | Not allowed | Allowed saves about 0.14% |
| Surrender | Late surrender offered | No surrender | Surrender saves a small amount |
| Number of decks | Fewer decks | 8 decks | Single-deck games often have other bad rules |
| Re-splitting aces | Allowed | Not allowed | Small effect |
The single most important check is the blackjack payout. A 6:5 game turns a $10 blackjack win from $15 into $12, and that difference costs far more than every other rule on the list.
Blackjack basic strategy
Basic strategy is the mathematically best play for every combination of your hand and the dealer’s up card. It does not win every hand, but over time it gives the lowest house edge possible without counting cards. The chart below is for a typical online game: 6 to 8 decks, dealer stands on soft 17, double after split allowed.
Hard totals (no ace counted as 11)
| Your hand | Dealer 2–6 | Dealer 7–A |
|---|---|---|
| 8 or less | Hit | Hit |
| 9 | Double vs 3–6, otherwise hit | Hit |
| 10 | Double | Double vs 7–9, hit vs 10 and A |
| 11 | Double | Double vs 7–10, hit vs A in S17 games |
| 12 | Stand vs 4–6, hit vs 2–3 | Hit |
| 13–16 | Stand | Hit (surrender 16 vs 9, 10, A and 15 vs 10 if allowed) |
| 17+ | Stand | Stand |
Soft totals (ace counted as 11)
| Your hand | Play |
|---|---|
| A,2 and A,3 | Double vs 5–6, otherwise hit |
| A,4 and A,5 | Double vs 4–6, otherwise hit |
| A,6 | Double vs 3–6, otherwise hit |
| A,7 (soft 18) | Double vs 3–6, stand vs 2, 7, 8, hit vs 9, 10, A |
| A,8 and A,9 | Stand |
Pairs
| Pair | Play |
|---|---|
| A,A and 8,8 | Always split |
| 10,10 | Never split, stand |
| 5,5 | Never split, treat as 10 and double vs 2–9 |
| 2,2 and 3,3 | Split vs 2–7, otherwise hit |
| 4,4 | Split vs 5–6, otherwise hit |
| 6,6 | Split vs 2–6, otherwise hit |
| 7,7 | Split vs 2–7, otherwise hit |
| 9,9 | Split vs 2–6 and 8–9, stand vs 7, 10, A |
Never take insurance. Insurance is a side bet that the dealer has blackjack, and it carries a high house edge for players who are not counting cards.
Live dealer vs digital blackjack
| Feature | Digital (RNG) blackjack | Live dealer blackjack |
|---|---|---|
| How cards are dealt | Random number generator, fresh shuffle every hand | Real dealer and physical cards on camera |
| Speed | Fast, you control the pace | Slower, set betting timers |
| Table limits | Often from $1 | Usually higher minimums |
| Rules | Check each game, varies widely | Check each table, varies widely |
| Best for | Practice, low stakes, strategy learning | Casino atmosphere, social play |
Card counting does not work on digital tables because every hand is dealt from a freshly shuffled shoe. Live tables deal from a shoe, but they typically reshuffle after only about half of it has been dealt, which makes counting impractical online.
Popular online blackjack variants
- Classic or American blackjack: the standard game described above.
- European blackjack: the dealer takes no hole card, so you can lose a doubled or split bet to a dealer blackjack.
- Blackjack Switch: you play two hands and can swap the second cards, but blackjack pays 1:1 and dealer 22 pushes.
- Free Bet Blackjack: free doubles and splits on certain hands, with dealer 22 pushing.
- Infinite or multi-seat live blackjack: unlimited players share the same dealt cards.
Variants change the strategy and the house edge. Read each game’s rules before applying the chart above.
Side bets: Perfect Pairs, 21+3 and more
Most online tables offer side bets such as Perfect Pairs, 21+3 and Bust It. They pay big multiples, but their house edges are typically several times higher than the main game. If your goal is the best odds, skip the side bets.
Where to play online blackjack legally in the US
Real-money online blackjack is legal only in states that license online casinos: New Jersey, Pennsylvania, Michigan, West Virginia, Connecticut, Delaware and Rhode Island. You must be 21+ and physically inside the state. See our state-by-state legal map for details.
Major licensed brands with digital and live blackjack include BetMGM, DraftKings, FanDuel, Caesars Palace Online, bet365 and Fanatics. Compare their welcome offers carefully: many casinos count blackjack at a low rate, such as 10% or 20%, toward bonus wagering, and some exclude it entirely. Our guide to wagering requirements explains why that matters.
Bankroll tips for blackjack
- Set a session budget and a stop-loss before you play.
- Bet a small fraction of your bankroll per hand, for example 1% to 2%.
- Ignore betting systems such as Martingale. They change how you lose, not whether the house has an edge.
- Take breaks and use the deposit and time limits in your casino account.
More support is in our responsible gambling guide.
Dealer bust odds by up card
Basic strategy makes more sense once you see how often the dealer busts. These figures are for a 6-deck game where the dealer stands on soft 17, after the dealer has checked for blackjack:
| Dealer up card | Chance the dealer busts |
|---|---|
| 2 | 35.4% |
| 3 | 37.4% |
| 4 | 39.6% |
| 5 | 41.8% |
| 6 | 42.3% |
| 7 | 26.2% |
| 8 | 24.4% |
| 9 | 22.9% |
| 10 / face card | 23.0% |
| Ace | 16.7% |
A dealer showing 4, 5 or 6 busts around 40% of the time, which is why basic strategy tells you to stand on 12 to 16 against those cards and let the dealer take the risk. Against a 7 or higher, the dealer busts far less often, so you need to improve your own hand. If the dealer hits soft 17, the bust chance rises slightly with a 6 (to about 43.9%) and an ace (to about 20.1%), but the house edge still goes up because the dealer also makes more strong totals.
What each rule is worth, in exact numbers
The rules table above shows the big picture. For readers who like precise numbers, these are the approximate effects on the house edge, compared with an 8-deck game where the dealer stands on soft 17 and doubling after a split is allowed:
- Blackjack pays 6:5 instead of 3:2: +1.39% to the house edge
- Dealer hits soft 17: +0.22%
- No doubling after a split: +0.14%
- Doubling only on 10 or 11: +0.18% (on 9 to 11 only: +0.09%)
- Late surrender allowed: −0.08%
- Re-splitting aces allowed: −0.08%
- Six decks instead of eight: −0.02%; two decks: −0.19%; one deck: −0.48%
Add up the rules of any table and you get a good estimate of its edge. A shoe game with 3:2 blackjack, dealer standing on soft 17, double after split and late surrender sits at roughly 0.4% to 0.5% with perfect basic strategy. A 6:5 game with the dealer hitting soft 17 can be well above 1.5%, even if you play perfectly.
Why insurance is a bad bet
When the dealer shows an ace, the game offers “insurance”, a side bet that pays 2:1 if the dealer has blackjack. It sounds like protection, but in a 6-deck game the house edge on insurance is about 7.4%. The dealer simply does not hold a ten-value card under the ace often enough to make 2:1 a fair price. “Even money” on your own blackjack is the same bet in disguise, so decline it too.
For context, you are dealt a blackjack about 4.75% of the time, roughly once every 21 hands. That 3:2 payout is a big part of your return, which is why 6:5 tables are so costly.
Side bets in numbers
| Side bet | What it pays on | Typical house edge |
|---|---|---|
| 21+3 | Your two cards plus the dealer’s up card forming a poker hand | About 2.7% to 13%, depending on decks and pay table |
| Perfect Pairs | Your first two cards being a pair | About 4% to over 20%, depending on decks and pay table |
| Insurance | Dealer having blackjack | About 7.4% (6 decks) |
Compare these with roughly 0.5% on the main game played well. Side bets can be fun in small doses, but they are where most of a careful player’s losses come from.
Common blackjack mistakes to avoid
- Sitting at a 6:5 table. It costs more than every other rule combined.
- Not doubling enough. Many players are too cautious with 10 and 11 against weak dealer cards, giving up some of their best spots.
- Splitting 10s or never splitting 8s. Stand on 20; always split 8s and aces.
- Taking insurance or even money. Both carry a house edge of about 7.4% in a 6-deck game.
- Standing on soft 17. A,6 should be hit or doubled, never stood on.
- Changing bet size based on “streaks”. In digital blackjack, every hand is dealt from a freshly shuffled shoe.
- Using strategy charts from a different variant. Free Bet, Switch and European no-hole-card games need their own adjustments.
Pre-game checklist for online blackjack
- Blackjack pays 3:2, not 6:5.
- The dealer stands on soft 17 (S17) if possible.
- Double after split is allowed, and surrender is offered.
- You know whether the dealer takes a hole card (American) or not (European).
- You have a basic strategy chart for these exact rules.
- You have set deposit, loss and time limits in your account.
Blackjack glossary
- Hard hand: a hand with no ace, or an ace that must count as 1.
- Soft hand: a hand with an ace counted as 11, such as A,6 (soft 17).
- S17 / H17: dealer stands on, or hits, soft 17.
- DAS: double after split allowed.
- Late surrender: giving up half your bet after the dealer checks for blackjack.
- Hole card: the dealer’s face-down card.
- Penetration: how much of the shoe is dealt before a reshuffle.
- Push: a tie; your bet is returned.
- Basic strategy: the mathematically best decision for every hand, without counting cards.
More casino game guides: baccarat guide · roulette guide · video poker guide · Mississippi Stud guide · slots guide.
Online blackjack FAQ
What is the house edge in online blackjack?
With good rules (3:2 blackjack, dealer stands on soft 17, double after split) and perfect basic strategy, it is around 0.5%. Poor rules or poor play can push it above 2%.
Is online blackjack rigged?
Not at state-licensed US casinos. Regulators require independent testing of the random number generators and game rules. Offshore sites have no US regulator to hold them to account.
Can you count cards online?
Not effectively. Digital games reshuffle every hand and live games use shuffling methods that make counting impractical.
Should I split 10s?
No. A hand of 20 is very strong, so basic strategy always stands on a pair of 10s.
Does blackjack count toward casino bonuses?
Often only partly. Many US casinos count table games at a reduced rate toward wagering or exclude them. Check the bonus terms first.
How often do you get a blackjack?
About 4.75% of hands in a 6- or 8-deck game, or roughly once every 21 hands.
Should I take insurance if I have a good hand?
No. Insurance is a separate side bet with a house edge of about 7.4% in a 6-deck game, whatever your own hand is.
Information checked October 2026. Real-money online casino games are legal only in states that license them, and only for players aged 21+ who are physically located in those states. Gambling problem? Call or text 1-800-GAMBLER.
Sources and how we checked this guide
Odds and house-edge figures come from published mathematical analyses and state regulations, checked in October 2026. Online casino rules and pay tables vary by game and operator, so always open the game’s help or paytable screen before you play.
