What Is RTP in Online Casinos?
RTP (Return to Player) is the percentage of all wagered money a slot or game theoretically returns to players over an extended period. It's a statistical measure — not a session guarantee.
The Formula
RTP = (Total payouts ÷ Total wagers) × 100%
Example: A slot receives €1,000,000 in wagers and pays out €960,000. RTP = 96%. The remaining 4% is the house edge.
RTP Ratings
| RTP | Rating | Examples |
|---|---|---|
| 97–99% | Excellent | Blood Suckers (98%), Mega Joker (99%) |
| 96–97% | Good | Gates of Olympus (96.5%), Sweet Bonanza (96.5%) |
| 94–96% | Average | Most popular slots |
| Below 94% | Poor | Avoid for regular play |
RTP is Long-Term Statistics
The most common misunderstanding: expecting RTP to apply to a single session.
A 96% RTP slot means: over millions of spins, the casino returns 96 cents per dollar wagered. In your 200-spin session, results can vary wildly — both +500% and -100% are possible.
Volatility determines short-term behaviour. RTP describes the long-term mathematical tendency.
Volatility vs RTP — Two Different Things
Low volatility: Frequent small wins. Examples: Starburst, Blood Suckers. Good for long sessions on small budgets.
Medium volatility: Balance of frequency and size. Examples: Book of Dead, Reactoonz.
High volatility: Rare but large wins. Examples: Gates of Olympus, San Quentin xWays, Tombstone RIP. Requires a larger bankroll and patience for dry spells.
Two slots with identical 96% RTP can feel completely different because of volatility.
RTP by Game Type
| Game | Typical RTP | Note |
|---|---|---|
| Slots | 94–97% | Provider-dependent |
| European Roulette | 97.3% | Single zero |
| American Roulette | 94.7% | Double zero — worse |
| Blackjack (basic strategy) | 99–99.5% | Best RTP at casino |
| Baccarat (Banker bet) | 98.9% | |
| Crash games (Aviator) | 97% | Theoretical |
Blackjack with basic strategy is mathematically the best choice by RTP — but requires learning the strategy.
How to Check a Slot's RTP
In the game itself: Tap the "i" or "?" button. Most providers display RTP directly.
Provider's website: Pragmatic Play, Play'n GO, NetEnt all publish RTP on their sites.
Casino-specific RTP: Some casinos run slots at a lower RTP than the standard version. This is legal but means the game you're playing may have a lower return than what's published for the base game. Ask support which version is running.
FAQ
Can I win at a low-RTP slot? Yes, in the short term — absolutely. RTP is a long-term tendency, not a session guarantee.
Does my bet size affect RTP? No. RTP is identical at €0.20 and €10.00 stakes on the same slot.
Why does the same slot show different RTP on different sites? Casinos can request a lower-RTP version from the provider. Legal, but worth knowing.
See also: What is Wagering · Best Casinos Canada 2025