RTP is printed on every slot but understood by few players. It is the single best indicator of how much a game will cost you to play over time — more meaningful than any jackpot figure.
This guide explains what RTP means, how it connects to the house edge and to volatility, and what actually counts as a good number.
What RTP means
RTP stands for Return to Player. It is the percentage of all money wagered on a game that is paid back to players as winnings over a very large number of plays. A slot with 96% RTP returns, on average, £96 for every £100 staked across millions of spins.
The key words are “on average” and “over the long run”. RTP is a statistical property of the game, verified by independent testing at licensed casinos. It does not tell you what will happen in your session.
RTP and the house edge
The house edge is the mirror image of RTP: it is whatever the game keeps. A 96% RTP means a 4% house edge — the casino’s long-run margin. Every bet you place loses that edge on average, which is how casinos profit while individual players still win.
This is why RTP matters so much for bonuses: the house edge is exactly what erodes a bonus as you clear its wagering. A higher-RTP slot costs less to play and less to wager through.
| RTP | House edge | Avg cost per £100 staked |
|---|---|---|
| 98% | 2% | £2 |
| 96% | 4% | £4 |
| 94% | 6% | £6 |
| 90% | 10% | £10 |
| 85% | 15% | £15 |
RTP is not volatility
RTP tells you the long-run return; volatility (or variance) tells you how bumpy the ride is. A high-volatility slot pays rarely but large; a low-volatility slot pays often but small. Two slots can share a 96% RTP and feel completely different to play.
This is why a session can lose badly on a 97% RTP game — RTP is an average over millions of spins, and any short run is dominated by variance. Neither RTP nor a “hot” streak changes the maths of the next spin.
What counts as a good RTP
For online slots, 96% is roughly average and 97%+ is good; below 94% is stingy. Table games often have higher effective RTP — blackjack with good rules can exceed 99% — which is one reason they usually contribute less to bonus wagering.
Reputable game makers publish RTP, and licensed casinos have it independently tested. If a game hides its RTP, treat that as a warning sign. When comparing bonuses, feed the real RTP into our bonus calculator for an honest cost estimate.
Frequently asked questions
What is a good RTP for slots?
Around 96% is average for online slots, 97% or higher is good, and below 94% is poor. Higher RTP means a lower long-term cost to play, though it says nothing about any single session.
Does a higher RTP mean I’ll win?
No. RTP is a long-run average over millions of spins. A higher-RTP game costs less to play over time, but short-term results are driven by volatility and any session can win or lose regardless of RTP.
What’s the difference between RTP and volatility?
RTP is how much a game returns over the long run; volatility is how swingy the payouts are. A high-volatility slot pays rarely but big; a low-volatility one pays often but small. Two games can share an RTP yet feel very different.