House edge and RTP explained in plain English
What house edge and return to player (RTP) mean, how to turn them into rupees per round, why short-term results swing wildly, and the well-known figures for roulette, baccarat, blackjack, Aviator and Mines.
Two numbers describe the long-run cost of almost every casino game: the house edge and the return to player (RTP). They are the same fact written two ways, and understanding them is the best protection against believing in tricks and "systems".
The two definitions
- House edge is the average share of every bet that the casino keeps over a very large number of bets.
- RTP is the average share of every bet that comes back to players.
They add up to 100%. If the RTP is 97%, the house edge is 3%.
What it means in rupees
With a 3% house edge, you lose on average ₹3 for every ₹100 you bet. The key word is bet, not deposit. If you bet ₹100 per round and play 200 rounds you have wagered ₹20,000 in total, and the expected loss is ₹20,000 x 3% = ₹600, even if you started with only ₹1,000. Because your winnings are re-bet, fast games add up faster than people expect.
Per round, a ₹100 bet at 97% RTP "returns" ₹97 on average. But no single round ever pays ₹97: you get ₹0, or ₹100 back, or some multiple. The ₹97 is an average that only appears over many rounds.
Why short-term results vary
The average only emerges over a very large number of bets. Over a short session, luck dominates: some players finish ahead, and many finish behind. A big win on a night does not show the edge is wrong. It is the same edge, hidden by variance.
Volatility (variance) describes how widely results swing. A low-volatility game pays small amounts often. A high-volatility game pays rarely but sometimes pays a lot. Two games with the same RTP can feel very different, but they cost the same on average.
Why "hot" and "cold" do not exist
Fair games have no memory. A roulette wheel does not know that red came up five times, and a slot or a crash game does not owe you a win. Streaks happen by chance, and believing a result is "due" is the gambler's fallacy. Nothing about betting after a loss, or betting after a win, changes the edge.
Well-known figures
| Game or bet | House edge | RTP | Notes |
|---|---|---|---|
| European roulette (single zero) | 2.70% | 97.30% | Any standard bet |
| American roulette (double zero) | 5.26% | 94.74% | Most bets |
| Baccarat: Banker | 1.06% | 98.94% | 8 decks; commission usually charged on wins |
| Baccarat: Player | 1.24% | 98.76% | 8 decks |
| Baccarat: Tie | 14.36% | 85.64% | 8 decks |
| Blackjack | About 0.5% | About 99.5% | Only with perfect basic strategy and common rules |
| Aviator | 3% | 97% | RTP as published by the provider, Spribe |
| Mines | 3% | 97% | RTP as published by the provider, Spribe |
Read this table carefully
- Figures vary by provider, version and rules. A blackjack table with different payouts or deck counts has a different edge, and a baccarat table with a different commission has too.
- Blackjack's low figure assumes you play every hand correctly. Most players lose more than that.
- The tie bet in baccarat has a high edge despite its large payout.
- Always check the RTP in the game's own information screen. Operators and providers may offer different versions of the same game.
What this means for you
- Every casino game is built so the house wins on average. Over time, players lose.
- A lower edge costs less per bet but does not make a game profitable. Even a 0.5% edge is a cost.
- No betting system changes the edge. Doubling, "patterns" and "signals" only change how the same average loss is spread.
- The more you bet in total, the closer you are likely to come to the average loss. Play less, lose less.
The house edge is also why bonus wagering has a price: see wagering requirements explained. If you play, set limits first: setting limits. For information only. 18+.
18+ only. This article is for information, not advice to gamble. Responsible gambling.
