The math
House Edge vs RTP Explained: What a Casino Actually Keeps
Every casino game keeps a slice of what is wagered. That slice is not hidden magic. It is a published number, and once you can read it you can size up any game in seconds. The two ways that number gets written are house edge and RTP, and the good news is they are the same fact wearing two hats.
This post explains both, shows you the arithmetic with real examples, and separates what the edge actually predicts from what it does not. We keep our own edge on the table, so it is only fair to teach you how to read it.
RTP and house edge are the same number
RTP stands for return to player. It is the percentage of all wagers a game returns to players over a very long run. House edge is the mirror image: the percentage the house keeps. They always add to 100%.
- 97% RTP means a 3% house edge.
- 99% RTP means a 1% house edge.
- 95% RTP means a 5% house edge.
So when one game advertises "97% RTP" and another says "3% house edge", they are describing identical value. Learn to flip between the two in your head and no marketing sheet can dress a number up on you.
What the edge means in real money terms
The house edge is defined per unit wagered, not per unit deposited. That distinction is where most people misread their own results. Consider a game with a 2% house edge, which is a 98% RTP.
If you place one hundred bets of one coin each, you have wagered 100 coins. The math expects the house to keep about 2% of that turnover, so roughly 2 coins, and return the other 98 across your results. Notice the base: it is the 100 coins you wagered, which is not the same as what you walked in with.
Turnover is the multiplier most players miss
Because the edge applies to every wager, it applies again every time you recycle a win back into a new bet. Deposit 10 coins, and if you win and re-bet and win and re-bet, your total turnover can climb to many times your deposit. The edge nibbles each pass. This is not a trick. It is just what "per wager" means, and knowing it is the difference between a session you understand and one that surprises you.
Why a great RTP still does not promise a win
Here is the honest part. RTP is a long-run average measured across millions of rounds. Your session is not millions of rounds. It is a few dozen or a few hundred, and over that short window the result is dominated by variance, the natural swing of luck around the average.
A high RTP game can empty your balance in ten minutes. A low RTP game can hand you a great night. Over the long run the averages assert themselves, but no single sitting is "the long run". Anyone who tells you a high RTP means you are due a win is selling something.
RTP shapes the odds. Variance decides the night. Both are true at once.
Volatility: the other half of the story
Two games can share the same RTP and feel completely different because of volatility, sometimes called variance. A low-volatility game pays small and often, so your balance drifts gently. A high-volatility game pays rarely but large, so your balance lurches. Same long-run return, very different ride. Pick the ride that suits your bankroll and your patience, not just the headline percentage.
How to read an edge like a pro
Put it together and you have a quick checklist for sizing up any game:
- Convert to house edge in your head (100% minus RTP) so every game is on the same scale.
- Remember the edge applies to turnover, not your deposit, so pace your recycling.
- Check the volatility to know whether to expect a gentle drift or big swings.
- Treat RTP as the shape of the odds over time, never as a promise for tonight.
Why we publish every edge
Most casinos bury the house edge in a help file, if they show it at all. We print it on every game and explain the rakeback that comes back to you on the edge page. The reason is the same reason we make every round provably fair: a number you can see is a number you can trust, and a house confident in its math has no reason to hide it.
Apply the checklist to games with different formats by comparing the current figures for Dice, Baccarat and Fruit Riot. Use each live game page as the source of truth because published values can change when a game is revised.
Read the edge, know the ride, play the games you enjoy, and never let a percentage get quoted at you sideways again.
Frequently asked questions
What is the difference between house edge and RTP?
They are the same fact stated two ways. RTP (return to player) is the share of wagers a game pays back over time. House edge is what it keeps. They add up to 100%: a 97% RTP game has a 3% house edge.
Does a high RTP mean I will win?
No. RTP is a long-run average across millions of bets. Any single session can land far above or below it. A high RTP improves your expected value, but variance still decides your night.
What is a good RTP for a casino game?
Anything from about 96% up is competitive for slots. What matters more is whether the number is published and honored. havocwin.com prints the exact edge on every game.