RTP (Return to Player) is the single most useful number on any slot. It’s the percentage of all wagered money a game is designed to pay back over millions of spins. A 96% RTP means that, across a huge sample, the game returns £96 for every £100 staked — and keeps £4 as the house edge. Reputable slots are independently tested by labs such as eCOGRA and GLI, and in regulated markets the UK Gambling Commission requires RTP to be published.

What is a good slot RTP?

As a rough guide:

Always check the specific game’s RTP, because many slots ship in multiple RTP versions and some casinos deploy the lower one. Every game page on SlotWhizz shows the RTP we read from the game data, so you can compare like for like.

RTP is not your odds on one session

This is the part most guides skip. RTP is a long-run average over millions of spins — it tells you nothing about a single session. You can sit well below or well above it for hours; that short-term swing is volatility, a completely separate measure. High RTP reduces the house edge; it does not make a game “due” or guarantee anything.

How to find high-RTP slots

Use the games catalogue and set the RTP filter to 96%+ or 97%+, then sort by Highest RTP. You can stack it with a provider or theme — for example Pragmatic Play’s catalogue or all 600+ studios.

For bonuses, RTP has a cousin: wagering requirements quietly erode your real return. We break those down in Wagering Requirements Explained, and our Bonus Decoder tool does the maths for you.

The bottom line

RTP is the cleanest signal of a slot’s fairness, and it’s free to check. Favour 96%+, verify the exact version, and treat volatility and bankroll as the levers for how the ride feels. Want a shortcut? Ask Whizz, our AI casino finder, to surface high-RTP games and the casinos that run them.

18+. Information only, not gambling advice. Outcomes are random and the house keeps an edge. Play responsibly.