Casinos set a fixed advantage in every game. This is the house edge percentage. Casinos use it to take a share from every bet. Each casino game has a Return to Player, or RTP. This value shows the house edge. Players can look up the RTP before they play at EU casino. The house edge and RTP total 100%.
The house edge represents how much a player loses per bet over time: betting outcomes vary from session to session, but mathematical calculations average outcomes across periods at any EU casino.
What Determines House Edge in Casino Games?
Game rules determine the house-edge percentage, which represents the amount the casino keeps from each bet. The house edge can change based on the number of decks, payout ratios, or betting options. Games that appear identical can have different house edges when their rules differ.Wheel pockets determine roulette's house advantage, with each bet type having its own edge. In blackjack, the payout structure alters the mathematical odds.
The house edge shows how much a player can expect to lose for every $100 wagered over millions of bets. No strategy changes the edge set by the game's rules.
Roulette Variants and Their Mathematical Differences
Wheel setup sets the house edge in online roulette. Roulette types use wheels with different numbers of zero pockets, which sets the expected return for each game.- European single zero;
- American double zero;
- Triple zero variants;
- French La Partage;
- En Prison rule;
- Even-money bet probabilities;
- Inside bet payouts;
- Outside bet coverage.
French Roulette Rule Modifications
French roulette has two rules that lower the house edge on even-money bets. With La Partage, the dealer returns half the bet when zero comes up. With En Prison, players can keep their bet for the next spin if zero appears. These rules apply to red/black, odd/even, and high/low bets. When players use them, the edge decreases from 2.7% to 1.35%. French roulette with these rules gives players the lowest edge in roulette. Some tables skip these rule changes.Blackjack RTP Across Rule Sets
Blackjack has the lowest house edge among all table games that casino sites offer. The edge usually falls between 0.4% and 1%, which changes based on the rules for each variant. When the number of decks changes, the odds change too. Most online casino Europe sites use the 3:2 payout in blackjack. Single deck games have a house edge close to 0.5% if players use the best strategy. Some tables pay 6:5, which raises the house edge by 1.4%.When the dealer stands on 17, the house edge decreases. If the dealer hits on soft 17, the edge remains higher. Rules about doubling and splitting also affect the edge, but only to a limited extent. To achieve the stated edge in any blackjack variant, a player must follow the strategy.
Baccarat Bet Types and Edge Spread
Baccarat offers three ways to bet. The house edge varies by 9 percent between these options.- Banker bet edge: 1.06%;
- Player bet edge: 1.24%;
- Tie bet edge: 14.36%;
- Eight-deck banker advantage: 1.059%;
- Six-deck variations: 1.056% banker edge;
- Commission on banker wins: 5%;
- No Commission Baccarat RTP: 98.94%;
- Tie payout ratios: 8:1 or 9:1.
Slot RTP Ranges and Variance
Slot games have house edges, usually between 2% and 10%. Most slots pay back about 96% to players, so the average house edge is around 4%. Blood Suckers offers a 98% RTP. Few games reach an RTP above 98%, making them uncommon. Starburst, by comparison, has a 96.1% RTP. Mega Moolah has a lower RTP because part of each bet contributes to the jackpot, which reduces the base RTP for progressive jackpots. Some games have an RTP of 94–95% at certain sites, while many slot collections have an RTP of 96–97%.Which Video Poker Variants Offer the Best RTP?
Video poker has a lower house edge than most machine games. The paytable for each variant sets the return to player. When players use the right strategy, they can bring the edge down to 0.46%. Deuces Wild can offer up to 99.73% RTP when played at tables with the right pay structure. The 9/6 Jacks or Better game has an RTP of 99.54%. With optimal strategy, some other video poker variants can approach or exceed 100% RTP.Slots have a house edge between 5% and 10%. Video poker has a house edge, from 0.5% to 1%. Different machines have different paytables, which affect player returns. Player mistakes increase the house edge above these rates.
Live Dealer Game Mathematics
Studios stream live table games in real time, using the same mathematics and rules as automated games, so the numbers and house edge are identical to those of digital RNG versions.- Unlimited Blackjack RTP reaches 99.54%;
- Infinite Blackjack RTP sits at 99.51%;
- Ultimate Texas Hold'em RTP hits 99.47%;
- Live baccarat banker edge stands at 1.06%;
- Live baccarat player edge reaches 1.24%;
- Cyber Auto Roulette multipliers reach 500x;
- Speed Roulette house edge sits at 2.7%;
- Lightning Roulette RTP reaches 97.3%.
How Do Rule Variations Change the House Edge?
A casino's house edge changes when the rules change. For example, in blackjack, if the payout moves from 3:2 to 6:5, the house edge goes up by 1.4%. If the dealer hits on soft 17, the house edge increases by another 0.2%. Limiting splits reduces players' opportunities to turn one hand into two, lowering the return to player. Restricting doubling increases the house advantage by limiting double downs. Allowing surrender, however, lets players reduce the house edge by 0.08% when they use it.American roulette's double-zero pocket results in a house edge twice that of European roulette. When casinos apply the La Partage rule, the house edge on even-money bets is halved. In baccarat, the commission charged on banker bets affects the final house edge.
Provider and Game Library Impact
NetEnt, Pragmatic Play, and Evolution Gaming publish RTPs that remain the same at every licensed casino. Software providers set the RTP percentages for their games. When a site uses games from several providers, you can find a range of RTPs.Sites offering 3,000 to 15,000 games usually show greater RTP variance, as they use a mix of providers who set both the highest and lowest RTPs. Adding more developers gives players more options to seek better odds. The RTP displayed reflects the combined rate for all games in the library, but it does not indicate the RTP for any individual slot or table game.
Audit requirements and licensing determine the accuracy of published RTP figures in each jurisdiction. Each jurisdiction selects the game versions and RTP rates available to players. MGA-licensed operators use laboratories to test RTP rates.