Casino house edge chart for Australian players

A casino’s house edge is the mathematical percentage retained by the operator over the long run. It is the flip side of return to player (RTP): if a game has 97% RTP, its house edge is 3%. The figure is an expectation across many wagers, not a forecast for one session.

Every casino game combines odds with a payout schedule. An even-money wager returns the stake plus equal profit, while a 50/50-looking bet that pays less after a win still gives the operator an advantage. Conversely, a large advertised payout may require several losing outcomes before it appears.

For Australian players, the percentages apply whether the stake is A$5 at a gaming venue or A$50 at an online casino. Currency, cryptocurrency denomination, loyalty points and promotional credits do not change the underlying probability. Rules, commissions and paytables determine which figure applies.

How the mathematical advantage works

The house edge equals one minus the expected return divided by the wager. On an A$10 game with 99.5% RTP, the expected loss is A$0.05 per unit of action. A larger bankroll permits more repeated bets and reduces the risk of bankroll exhaustion, but it cannot turn a negative expectation positive.

Specific rules matter because a single change can move the percentage substantially. Blackjack surrender, fewer decks, a 6:5 payout and restricted doubling all raise the edge. Baccarat commission changes, roulette wheel layouts and slot paytables also alter the operator’s advantage. Published RTP is more useful than labels such as “high RTP” or “low edge”.

Strategy helps only where decisions matter. Basic strategy can move blackjack and video poker close to their best figures, but errors quickly raise the edge. Martingale and Fibonacci systems merely change the size and frequency of losses; they do not remove the house advantage from roulette, lotteries, keno or slots.

House edge by casino game

The following comparison uses commonly documented rules and optimal decisions for skill-based games. Actual products can differ, especially at offshore online casinos and casinos offering promotional side bets.

Game or market	Typical house edge	Rule or payout factor
Blackjack	About 0.5%	Usually 0.2–1.5%; basic strategy and blackjack rules dominate
Baccarat	1.06% banker; 1.06% player; 14.36% tie	5% banker commission; tie payout
Craps	1.41% pass line; 1.36% don’t pass	Odds and proposition bets differ
European roulette	2.70%	Single-zero wheel
French roulette	1.35–2.70%	La partage or en prison lowers the even-money edge
American roulette	5.26%	Double-zero wheel
Pokies and online slots	5–15% for many pokies	Online titles often run 2–15%; RTP and volatility differ
Video poker	0.5–1.1%	Full-pay schedule and accurate strategy
Oasis Poker	About 1.15%	Commission and progressive side bets
Three-card poker	3.48%	Ante Bonus and Pair Plus payouts
Pai Gow Poker	2.3–2.6%	Commission or no-commission rules
Caribbean Stud	3.56%	Progressive side bets increase the cost
Let It Ride	3.66%	Payout schedule
Casino War	2.76%	Tie terms
Red Dog	3.32%	Payout schedule
Sic Bo	2.49–33.3%	Combination and triple payouts
Keno	10–40%	Number and pattern of picks
Mainstream live game shows	4–10%	Bonus-round paytable
Bingo	10–20%	Prize pool and ticket price
Lottery-style scratchcards	30–60%	Jurisdiction and prize pool
Poker	No fixed house edge	Casinos usually take a 5–10% rake

These figures are long-run averages based on the stated rules, not guarantees for a bankroll. A 0.5% blackjack game can still produce a large session loss, while a low-RTP slot can occasionally return more than its theoretical percentage. Variance, volatility and maximum bets matter as much as the average.

The comparison should be used to evaluate products under equivalent rules, not simply to compare brands. Check the number of decks, payout schedules, commission terms, progressive contributions and published RTP before assuming that two games named blackjack, baccarat or roulette have identical mathematics.

Low-edge benchmarks and bankroll controls

A low house edge means a smaller expected loss per dollar, not a greater chance of winning. Blackjack and video poker require correct strategy to approach their best figures, while baccarat and craps depend mainly on choosing the right market and avoiding expensive side bets.

The lowest-edge benchmarks worth remembering are:

• Blackjack near 0.5% with favourable rules and basic strategy.
• Full-pay video poker around 0.5%, provided strategy is accurate.
• Baccarat banker or player around 1.06%; the tie is far costlier.
• Craps pass line near 1.41%; betting the odds can reduce the edge further.

Those figures should be compared with limits rather than treated as a winning system:

• Set a cash and time limit before the first wager.
• Use only a bankroll reserved for entertainment, never borrowed money.
• Keep stakes small enough to survive ordinary losing sequences.
• Use deposit limits or session reminders to stop at the boundary.

Bankroll size changes survival, not expectation. A conservative stake can extend play, but an unbounded loss limit will eventually meet the same mathematics. This matters most with high-volatility pokies and online slots, where a small share of wagers can produce most returns.

Pokies, live dealers and Australian market realities

Pokies are a familiar part of Australian pub, club and casino culture, particularly in Sydney, Melbourne and Brisbane. Many machines offer A$1, A$2 or A$5 stakes, making them accessible but also easy to play for extended periods. In NSW, the gaming-machine return-to-player floor is 85%, so a compliant machine’s built-in edge cannot exceed 15%; other states and individual products differ.

Large land-based venues such as Crown Melbourne in Southbank, Crown Sydney at Barangaroo and Crown Perth in Burswood provide blackjack, baccarat, roulette, poker variants and, where offered, craps. NSW also permits certain licensed in-venue online products with geofencing, so access rules can differ from an ordinary offshore site.

Live-dealer games at international online casinos use the same core probabilities as physical tables, but each studio publishes its own rules. Players should check the number of decks, tie or blackjack payouts, side bets and stated RTP. The Australian Communications and Media Authority maintains prohibited and restricted interactive-gambling service lists; a foreign operator’s licence is not by itself Australian authorisation.

Reading the numbers responsibly

The edge describes expected loss over many decisions, so results can depart from it substantially in both directions. A responsible session limit should reflect what someone can afford to lose, not a belief that the edge will “catch up” after a poor run.

Bonuses do not change a game’s base house edge. They can add expected value, but wagering requirements, maximum-bet rules, excluded games and cash-out limits determine the real worth. Comparing cash terms with the conditions attached is more informative than the headline offer.

Legal gambling venues require players to be 18 or older in Australia. Deposit limits, reality checks, self-exclusion and scheduled breaks are useful safeguards when time or spending changes. If gambling causes distress, Gambling Helpline Australia can be reached on 1800 858 858.