RTP
Return to player is the share of everything ever staked on a game that the game pays back, averaged over far more plays than anyone will ever make.
RTP is a property of a game’s design, calculated from its paytable and the probability of each outcome. It is not measured from what players experienced, and it is not a rate at which money comes back to you.
Its complement is the house edge: h = 1 − r. A 96% RTP is a 4% edge. That 4% applies to every coin staked, which is why the amount you wager — not the amount you deposit — determines the long-run cost. This is the single fact that makes wagering requirements expensive, and it is why contribution percentages matter so much.
The relationship, in one line
expected cost = amount staked × (1 − RTP)
Everything else on this site is an elaboration of that. See the expected balance calculator.
Explainers
What RTP actually means
Return to player is the share of everything ever staked on a game that the game pays back, averaged over a number of plays far larger than anyone will ever make.
Why RTP does not describe your session
The published figure is an average over an unimaginably large number of plays. A session is a very small sample, and small samples are dominated by variance.
The same game can ship at several different RTPs
Many slots are supplied to operators in multiple RTP configurations. Unless the operator says which one is running, a published figure for that title is not a figure for the game you are playing.
Games with an established RTP
This list is short, deliberately. A figure appears here only when it can be established from a primary document or derived from the stated rules of the game — arithmetic that anyone can check, rather than a number copied from somewhere else.
| Game | RTP | House edge | Basis |
|---|---|---|---|
| Single-zero roulette | 97.2973% | 2.7027% | derived |
| Double-zero roulette | 94.7368% | 5.2632% | derived |
Why there are no slot RTPs here
Most slots are supplied to operators in several RTP configurations — a 96% build and a 94% build of the same game, with the same name and artwork. Unless the operator states which one is running, a published figure for that title does not describe the game you are playing.
A long table of slot RTPs would be easy to assemble from other affiliate sites and would be worth nothing, because most entries would describe a build that may not be live. For a specific slot at a specific operator, the reliable answer is that operator’s own game information panel, read on the day you play. More on configurations.