July 30, 2026
What Is RTP? House Edge and Provably Fair, Explained
What RTP really measures and what it does not: how to turn it into house edge, why it says nothing about your session, and what provably fair adds on top.
What Is RTP? House Edge and Provably Fair, Explained
Every honest casino game tells you what it costs to play. The number is called RTP, it is printed on most game pages, and almost nobody reads it properly. This guide explains what RTP actually measures, why it is not a promise about your session, how it turns into the house edge, and what provably fair adds that RTP alone cannot.
RTP in one sentence
RTP stands for return to player: the share of everything wagered on a game that comes back to players, measured across an enormous number of rounds. A game at 98% RTP returns about $98 for every $100 staked on it, in aggregate, over the long run.
The word doing the heavy lifting is aggregate. RTP is not a prediction about your afternoon, your hundred spins, or your bankroll. It is a property of the game measured over millions of rounds by everyone playing it. Your own results will sit somewhere either side of it, sometimes a long way either side, and that gap is variance rather than luck running out.
House edge is the same number, said honestly
Subtract RTP from 100% and you get the house edge, which is the casino's expected share.
98% RTP is a 2% house edge
97% RTP is a 3% house edge
96% RTP is a 4% house edge
Those small gaps matter more than they look. Moving from a 98% game to a 96% one doubles what the game expects to take from every dollar you wager. Put differently, playing the 96% game costs you twice as much per unit staked to be entertained for the same length of time.
This is also why chasing losses does not work in the way people hope. The edge applies to every round independently, so a bigger bet after a loss does not recover anything on average. It just puts more money through the same percentage.
What the numbers look like across a real casino
Here are figures from games at Jacks Club, so you can see how much the price varies between one part of a casino and another:
Video Poker: 99% RTP, a 1% edge, the leanest game on the site
Baccarat banker bet: roughly 1.06% edge, even after the 5% commission
Single zero roulette: 2.70% edge, because payouts assume 36 pockets and the wheel has 37
Double zero roulette: 5.26% edge, the same game at nearly twice the price
Notice how wide that spread is. The difference between the best and worst numbers in that list is a factor of five. Nothing about the entertainment changes proportionally, which is why reading the figure before you play is the single cheapest habit in gambling.
Why RTP alone is not enough
A published RTP is a claim. It is usually an honest one, verified by a testing house, but it is still something you are being asked to take on trust: the operator says the game returns 98%, and you believe them.
Two things narrow that gap. The first is independent certification. Our random number generator is certified by iTech Labs, an external testing laboratory, which means someone other than us has examined whether outcomes are actually random.
The second is stronger, and it is where crypto casinos genuinely improved on the old model.
Provably fair, explained without the cryptography
Provably fair means you can check a result yourself, after the fact, rather than trusting that it was fair.
The mechanism is simpler than it sounds. Before a round starts, the game commits to its outcome by publishing a scrambled version of it, a hash, which cannot be read but also cannot be changed afterwards. Your own input is mixed in, so the operator cannot know the result in advance either. When the round ends, the original values are revealed. You can then run the same calculation and confirm the outcome matches the commitment made before you played.
On our Crash game, for example, the crash point is fixed and committed before the round begins and can be verified against the seed afterwards. It cannot be adjusted because you happen to have a large bet riding on it. That is the entire point: not a promise of fairness, but a receipt for it.
RTP tells you the price. Provably fair tells you the game charged you that price honestly. You want both.
Five things RTP does not mean
It does not mean you get 98% of your money back. Bet $100 across a session and you will end up with more or less than $98, almost never exactly that. The figure describes a population of rounds, not yours.
It does not mean a game is "due". Each round is independent. A game that has paid nothing for an hour is not owed anything, and one that just paid out is not empty. There is no memory in a random number generator.
It does not mean higher RTP wins more often. RTP and volatility are different dials. A high volatility game at 97% pays rarely and large; a low volatility game at the same 97% pays often and small. Same price, very different evening.
It does not mean strategy is pointless, or that it beats the edge. In games with decisions, playing correctly stops you giving away more than the listed edge. It never turns the edge positive.
It does not mean a predictor app can work. Anything sold as a Mines, Plinko, Crash or slot predictor is a random number generator with a subscription fee. If a tool could genuinely forecast outcomes it would break the game rather than be sold to you for a monthly payment.
How to check RTP before you play
Most game pages here print it near the title, and every tile in a category grid shows it before you open the game. If a game anywhere does not publish its RTP, treat the omission as information.
One more honest note: there is no demo mode at Jacks Club, on any game. Some players would rather test a game for free first, and we cannot offer that. What we offer instead is a low minimum stake, so learning a game costs very little, and a published RTP on every game so the price is never a surprise.
RTP is the price of playing, house edge is the same number stated from the casino's side, and neither one predicts your session. Read the figure before you open a game, understand that variance rather than fate explains your results, prefer games that let you verify the outcome rather than merely promise it, and treat anything claiming to predict a random number generator as a subscription you are being sold. The maths is not hidden here. It is printed on the page.