An advantage player is someone who gambles only when the math is on their side. Most casino games can’t be beaten over time, but a few can: poker against weaker players, blackjack with card counting, video poker with strong pay tables plus rewards, and sports betting when you find mispriced lines. Doing it for profit takes skill, discipline and, above all, a bankroll big enough to survive the swings.

What advantage play is (and isn’t)

Casinos build a house edge into nearly every bet. Advantage players look for the exceptions: games where skill shifts the edge, and promotions or comps generous enough to cover what is left. It is not cheating. Card counting, choosing good pay tables and shopping for lines are all legal, though casinos and sportsbooks are free to limit or refuse players they think are winning.

The main areas are poker, blackjack, sports betting and video poker. Each needs a different skill set.

Start with a proper bankroll

The biggest reason skilled gamblers go broke is an undersized bankroll. Even with an edge, short-term variance can wipe you out. The chance of that happening, while playing correctly, is called risk of ruin.

How big a bankroll you need depends on the game. High-variance games such as tournament poker and video poker, where much of the return comes from rare big hands, need far more betting units than low-variance ones.
Risk of ruin falls quickly as the bankroll grows. For the same game and bet size, doubling the bankroll roughly squares the risk: a 10% chance of going broke becomes about 1%.
Size your bets to the bankroll, not the other way around. If a losing stretch shrinks the bankroll, cut your bets.

Playing on a short bankroll is a gamble on top of a gamble. Don’t attempt it without another source of income.

Poker

Poker is the one casino game where you play against other players rather than the house, which is why it is the most common route to making money from gambling. The house takes a rake, so you have to beat the other players by more than that cost. Online poker and live rooms both offer two main formats:

Cash games: you can join and leave when you like, and your chips are cash. Variance is lower than in tournaments. Game selection matters most: the best cash game players move between rooms and tables to find weak games.
Tournaments: fields are often softer, but you have to play until you bust or win, sessions run for hours, and variance is far higher. Even the best tournament players can go months without a big score.

Learning games other than Texas Hold’em pays off. Mixed games and non-Hold’em events often draw softer fields. Many poker rooms also offer player rewards, high-hand promotions or bad beat jackpots. These are funded from the pot, so they only add value when the payout is large relative to what is taken out. For where to play, see the best Las Vegas poker rooms.

Video poker

Video poker is the easiest form of advantage play to learn. Perfect strategy is fixed for each game and pay table, and a few full-pay games return close to or above 100% with expert play. Full-pay Deuces Wild, for example, returns about 100.76%. See our guides to Deuces Wild and Double Double Bonus for how pay tables change the return.

The hard part is finding the machines. Full-pay games are scarce, so you may have to play higher denominations or travel to find one. Our list of the best video poker in Las Vegas is a starting point.

The players club is the other half of the equation. Cash back, free play mailers, room and dining comps, and promotions such as multiplier days can turn a game that returns just under 100% into a winning one. Rewards rates vary widely between casino companies, so compare them. Our guide to earning comps explains how they are calculated. If a casino offers a better rate on free slot play than on cash, take the free play.

Blackjack

Blackjack is the best-known table game that can be beaten, mainly through card counting. A skilled counter raises bets when the remaining cards favor the player and bets small otherwise.

The bigger challenge is staying in the game. Casinos can ask winning players to stop playing blackjack, known as getting backed off. Counters manage this by:

Keeping their bet spread modest, so changes in bet size do not stand out
Not showing off their knowledge at the table
Spreading their play across many casinos rather than hammering one
Thinking carefully before using a players card, since it tells the casino who is winning

Rules matter as much as counting. Avoid games that pay 6-5 on a blackjack instead of 3-2, and look for dealer stands on soft 17, double after split, surrender and resplitting aces. See the best blackjack games in Las Vegas.

Sports betting

Sports betting can be beaten, but only by a small share of bettors, and successful professional sports bettors treat it as a numbers business. Common approaches include:

Line shopping: comparing prices at several sportsbooks and always taking the best number, including alternate lines and odds. Occasionally prices differ enough to bet both sides for a guaranteed profit, known as arbitrage.
Betting early: sharp bettors look for soft opening lines before the market corrects them.
Fading the public: popular teams attract lopsided betting, which can leave value on the unpopular side.
Teasers: in the NFL, 3 and 7 are the most common margins of victory, so teasers that move a line across both numbers are the ones sharp bettors look at. Teaser prices vary by book and make a big difference.
Futures and props: long-term markets and novelty props are often priced loosely. Bettors who can estimate the real probability can find value on either side.

Winning bettors should expect sportsbooks to limit their bet sizes. Keep within bankroll limits even when you are confident, especially on heavy favorites.

Advantage play online

Online casinos, poker sites and sportsbooks compete with bonuses, reloads and loyalty programs, and players who are good at math can work out whether a given offer has positive expected value after its wagering requirements and game restrictions. A few points to keep in mind:

Casino bonuses usually count slots in full and table games at a reduced rate or not at all.
A sportsbook free bet usually pays only the winnings, not the stake, so it is worth less than its face value.
Poker rakeback and loyalty programs can turn a break-even player into a small winner.
Sites that consistently see bonus-only play may restrict or close accounts.

In the US, online casinos and sportsbooks are licensed state by state. Offshore sites are not licensed by US state regulators, so there is no state regulator to help if a site refuses to pay.

Advantage play FAQ

Is advantage play legal?

Yes. Using skill, choosing good games and taking promotions is legal. Using devices to count cards, colluding or marking cards is not. Casinos can still refuse your action.

Which casino game is easiest to beat?

Video poker is the easiest to learn, because strategy is fixed and pay tables are posted. Finding full-pay machines and strong rewards is the hard part.

How big a bankroll do I need?

Enough that a normal losing streak can’t wipe you out. The exact number depends on the game’s variance and how much risk of ruin you accept; doubling it cuts that risk dramatically.

Do I have to pay tax on gambling winnings?

In the US, gambling winnings are taxable income. Keep a record of your wins and losses and talk to a tax professional if you gamble seriously.

Gamble only what you can afford to lose. In the US, the National Problem Gambling Helpline is 1-800-MY-RESET (call or text).