What the law says
Blackjack ticks every box of the gambling test. You pay for chips, the cards come out of a shuffled deck, and a winning hand pays cash. Regulators treat it that way too, and Nevada’s Gaming Control Board lists it in its monthly revenue reports under its old name, “Twenty One”, next to craps and roulette.
UK law settles the skill question directly. The Gambling Act 2005 counts a game as a game of chance if it mixes chance and skill, and even if “superlative skill” could remove the chance, so blackjack is covered however well you play.
Why skill doesn’t change the answer
Blackjack is unusual for a casino game because your choices really do change the odds. In 1956, four mathematicians at the Army’s Aberdeen Proving Ground worked out the best move for every hand against every dealer card, which is now known as basic strategy. Under the Las Vegas rules they studied, a player using it would lose about 0.6 cents per dollar bet over time. A player who simply copied the dealer, hitting on 16 or less and never doubling or splitting, would lose about 5.6 cents.
That long-run loss is the house edge, meaning the casino’s average profit on each dollar bet. Basic strategy shrinks it but can’t remove it. The authors traced the casino’s advantage to one rule. If you and the dealer both go over 21, the dealer wins, and since you play your hand first, your bet is gone before the dealer turns a card.
Over a year, that small edge adds up to a lot of money. In the 12 months to June 2026, Nevada casinos won $1.24 billion from blackjack and kept 12.83% of the money players changed into chips. That’s not the same thing as the house edge, because a chip can be bet many times before the casino finally wins it.
Card counting and table rules
Card counting means tracking which cards are gone so you can bet more when the deck favors you. It’s a skill, but it still depends on what the shuffle deals, so it doesn’t turn blackjack into something other than gambling. Casinos don’t have to let you use it, either. Nevada’s Supreme Court ruled in 2016 that a casino can exclude anyone for a reason that isn’t discriminatory or otherwise unlawful. New Jersey’s Supreme Court went the other way in 1982, in Uston v. Resorts International, when it said only the state regulator could ban players for how they play.
Table rules can also raise the cost of playing. Some casinos pay 6:5 instead of 3:2 for a blackjack (an ace plus a ten-value card as your first two cards), which cuts your payout on the best hand in the game by a fifth.
Free blackjack apps
Free blackjack with play-money chips isn’t gambling, because there’s nothing to win. Paid chips can change that. Big Fish Casino offered blackjack, poker and slots, and sold chips for $1.99 up to nearly $250. Players couldn’t cash them out, but they could sell them privately and transfer them in the app. In 2018 a federal appeals court held those chips were a “thing of value” under Washington law, which made the app illegal gambling there.
Questions people also ask
Can you make money playing blackjack?
Not with basic strategy alone, because it still leaves the casino a small edge. Card counting can tip the odds your way at times, but casinos in states like Nevada can simply stop dealing to you.
What does 6:5 blackjack mean?
It's how much a blackjack pays. On a $100 bet, a 3:2 table pays $150 and a 6:5 table pays $120. Massachusetts' highest court ruled in 2021 that casinos there could use 6:5 on cheaper tables, so check the payout printed on the felt before you sit down.
Is free blackjack on an app gambling?
Usually not, because you can't win anything of value. The exception is an app where chips cost money and can be passed on to other players, which a federal appeals court treated as gambling under Washington law.
Sources
- Baldwin, Cantey, Maisel and McDermott, "The Optimum Strategy in Blackjack", Journal of the American Statistical Association 51 (1956)
- Nevada Gaming Control Board, Monthly Revenue Report, June 2026
- UK Gambling Act 2005, section 6 (gaming and games of chance)
- Slade v. Caesars Entertainment Corp., No. 62720 (Nev. 2016)
- DeCosmo v. Blue Tarp Redevelopment, LLC, 487 Mass. 690 (2021)
- Kater v. Churchill Downs Inc., No. 16-35010 (9th Cir. 2018)