RTP is the single most useful number you can check before playing a casino game. It tells you exactly how much the house keeps, on average, over millions of rounds. It is not a guarantee for any session you play, but it is the honest measure of a game’s long-term value, and it varies enough between games and even between casinos that it is worth checking every time.
What RTP Actually Means
Return to Player is expressed as a percentage of total money wagered that a game pays back to players over its lifetime. A 96% RTP slot returns 96p for every pound wagered across millions of spins. The remaining 4% is the house edge.
RTP and house edge are the same number expressed differently:
- 96% RTP = 4% house edge
- 98.94% RTP = 1.06% house edge
- 99.54% RTP = 0.46% house edge
The calculation is always: House Edge = 100% minus RTP. Knowing one tells you the other instantly.
What RTP Does Not Mean
RTP is a statistical average across an enormous number of rounds, typically tens of millions. In any individual session of a few hundred spins, your actual return will almost certainly deviate significantly from the published figure. You can lose 60% of your bankroll on a 97% RTP slot in a short session, or double it on a 93% RTP slot. Neither outcome is unusual.
RTP does not:
- Predict what happens in your session
- Mean you will get back 96p from every pound you wager personally
- Represent a catch-up mechanism after losses
- Change based on how long you have been playing
What it does tell you is which game gives the house a smaller long-term advantage. Over hundreds of sessions, the higher-RTP game will cost you less on average.
RTP by Game Type
The differences between game categories are substantial. Table games consistently outperform slots, and within each category the gap between best and worst is large.
| Game | RTP | Condition |
|---|---|---|
| Blackjack | 99.0-99.6% | Basic strategy, favourable rules |
| Video Poker (9/6 Jacks or Better) | 99.54% | Optimal hold strategy |
| Baccarat (Banker bet) | 98.94% | After 5% commission |
| Baccarat (Player bet) | 98.76% | Standard rules |
| Craps (Pass Line) | 98.59% | No odds bet |
| French Roulette (La Partage) | 98.65% | Even-money bets only |
| European Roulette | 97.30% | All bets |
| Casino Hold’em | 97.84% | Optimal play |
| Online Slots (typical) | 94-97% | Varies by title |
| American Roulette | 94.74% | All bets |
| Keno | 75-85% | Varies by operator |
The blackjack and video poker figures only apply with correct strategy. Playing blackjack without basic strategy can push effective RTP below 97%. Playing video poker with random holds loses most of the theoretical edge. See our casino game strategies guide for the strategy rules that achieve these RTPs.
Slots RTP: The Configurable RTP Problem
Slots are the game category where RTP varies most, and where a specific problem that most guides ignore makes the most difference in practice.
Many major slot providers including Pragmatic Play, Play’n GO, and Relax Gaming release their games with multiple RTP configurations. The same title might be available at 94%, 96%, or 97% depending on which version the casino chooses to deploy. Two players, one on a generous casino and one on a budget operator, can be playing what appears to be the same game with a 3-point RTP difference between them.
The only reliable way to check the RTP you are actually playing: open the game at that specific casino, go into the game info panel (the information icon, usually within the game interface), and read the RTP figure listed there. Do not assume based on the provider’s marketing material or another site’s listing. The casino-specific version you are playing is what matters.
Progressive jackpot slots have a separate RTP consideration. A portion of each bet funds the jackpot pool, which reduces the base game RTP. The published RTP figure for a progressive slot includes the jackpot contribution statistically, but that jackpot is hit so rarely that most players experience a session RTP closer to the base figure. If the jackpot is not your goal, the effective playing RTP on most progressive slots is lower than an equivalent non-progressive title.
Use our Slot RTP Calculator to see what different RTP percentages mean in real money terms across a session length.
RTP and Volatility Are Different Things
RTP tells you how much a game returns on average. Volatility tells you how that return is distributed across sessions. Two games can have identical RTP and completely different experiences.
- Low volatility, 96% RTP: Frequent small wins, steady balance, rare large payouts. Bankroll lasts longer. Low variance means actual session returns cluster close to the theoretical 96%.
- High volatility, 96% RTP: Long dry spells interrupted by significant wins. A 200-spin session might return 40% or 300% of your stake. Over millions of spins, it still averages 96%.
High volatility is not worse; it is riskier. A smaller bankroll on a high-volatility slot may run out before a big pay arrives. A larger bankroll can survive the variance. Match volatility to your bankroll and playing style, not just RTP.
How Strategy Changes Your Effective RTP
In games where your decisions affect outcomes, RTP is not fixed from your perspective. It is the output of the mathematical best-case decision tree. Deviating from that tree lowers your effective RTP.
Blackjack
Basic strategy blackjack at a favourable table (3:2 blackjack payout, dealer stands soft 17, double any two cards) runs at approximately 99.5%. Every incorrect decision adds to the house edge against you. Common costly mistakes: hitting a soft 18 against a dealer 7 when you should stand, not doubling 11 against a dealer 10, splitting 10s. A player making regular errors might experience an effective RTP of 97-98% on the same game.
A 6:5 blackjack payout instead of 3:2 alone adds 1.39% to the house edge, dropping that 99.5% game to roughly 98.1% before any strategic decisions. Always verify the blackjack payout before sitting down. See our blackjack guide for full basic strategy.
Video Poker
A 9/6 Jacks or Better machine runs at 99.54% with perfect holds. An 8/5 machine (one payout tier lower for Full House and Flush) runs at 97.3%. That gap exists before any strategic decisions. On top of that, playing the maximum coins is required to access the boosted Royal Flush payout that makes the math work. Playing four coins instead of five on a 99.54% game effectively reduces your RTP on the Royal Flush portion of the return.
RTP and Bonus Wagering
RTP becomes strategically relevant when you are clearing a wagering requirement on a bonus. The relationship is direct: a higher-RTP game costs you less per unit wagered while working through playthrough.
However, this is where game contribution rates complicate things. Most casinos set blackjack and video poker at 10% contribution toward wagering requirements specifically because their high RTP would make them too efficient at clearing bonuses. Slots at 100% contribution have a lower RTP but the full bet counts. The actual expected cost depends on both the RTP and the contribution rate combined.
For a bonus with 30x wagering: a 96% RTP slot at 100% contribution costs roughly 4% of the wager total (30 times the bonus amount). The same bonus cleared on a 99.5% RTP blackjack game at 10% contribution requires 300 times the bonus wagered to clear the requirement, while losing only 0.5% per wager. The maths favours slots for most bonus clearing. Our wagering requirements guide covers the full calculation.
Where to Find RTP for Any Game
- In-game info panel: Most online slots and live casino tables show the RTP in the paytable or rules section. This is the version actually deployed at that casino, which matters for configurable-RTP games.
- Game provider websites: Providers like Evolution, Play’n GO, and Pragmatic Play publish RTP figures on their official game pages.
- Regulator disclosures: UKGC-licensed casinos are required to make game RTP data accessible to players on request.
Do not rely on third-party listings without verifying against the in-game figure. The configurable-RTP issue means a listing from another site may reflect a different version than what you are playing.
Frequently Asked Questions
What is a good RTP for an online slot?
96% is a reasonable threshold. Many well-known titles run at 96-97%. Anything below 95% should prompt a check of whether a higher-RTP version of the same game exists elsewhere. Avoid progressive jackpot slots if you are optimising purely for base-game RTP rather than jackpot potential.
Can a casino change the RTP of a game after I start playing?
No. RTP is set at the software level by the developer and certified by independent auditors. A casino can only choose between pre-configured versions offered by the provider. The version running when you start a session does not change mid-session.
Why does my actual return differ so much from the published RTP?
RTP is a long-term statistical average across millions of rounds. Short sessions are dominated by variance. A few hundred spins is not enough volume for results to converge on the theoretical figure. Significant deviations in either direction are completely normal.
Does the RTP of a slot change after a big jackpot is paid?
No. Each spin is independent. The game’s programmed RTP does not reset or change after any payout, including a jackpot. Past outcomes have no influence on future ones.
Is a 99% RTP game always a better choice than a 96% game?
In terms of expected value over high volume, yes. In terms of individual session experience, not necessarily. A 99% RTP video poker game requires optimal strategy and max-coin play to achieve that figure. A 96% slot requires no decisions. If you are not playing video poker with correct holds, the effective RTP may be lower than the slot.
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