The Basics
What Does RTP Mean?
RTP — Return to Player — is the percentage of all wagered money that a casino game pays back to players over millions of rounds. A 97% RTP slot returns $97 for every $100 wagered on average. The remaining 3% is the house edge — the casino’s mathematical profit margin.
RTP is not a per-session guarantee. It is a long-run statistical average calculated over tens of millions of simulated rounds. In any individual session, your result is dominated by variance — you may win significantly more or less than the RTP suggests.
RTP vs House Edge: These are two ways of expressing the same thing. A 97% RTP = 3% house edge. A 95% RTP = 5% house edge. House edge is what the casino keeps; RTP is what the player gets back.
Why It Matters
Why RTP Matters for Your Bankroll
| RTP | House Edge | Expected Loss per $1,000 Wagered | Rating |
|---|
| 99% | 1% | $10 | Exceptional |
| 97% | 3% | $30 | Excellent |
| 96% | 4% | $40 | Good |
| 95% | 5% | $50 | Average |
| 93% | 7% | $70 | Poor |
| 90% | 10% | $100 | Avoid |
The difference between 95% and 97% RTP is $20 per $1,000 wagered — significant over a long session or when clearing a bonus with 30–50x wagering requirements.
How It’s Calculated
How RTP Is Calculated and Certified
01
Game Developer Simulation
The game developer runs billions of simulated rounds using the game’s mathematical model. Total winnings are divided by total wagered to produce the RTP percentage.
02
Independent Certification
Before release, the game is submitted to an independent testing laboratory — eCOGRA, iTech Labs, GLI, or BMM Testlabs. They verify the mathematical model and confirm the stated RTP.
03
Casino Configuration
Some providers allow casinos to configure the RTP within a permitted range (e.g. 94–97%). The casino chooses which version to run. This is why the same slot may have different RTPs at different casinos.
04
Player Verification
You can check the RTP of any slot by clicking the “i” or “?” button in the game’s information screen. This shows the actual RTP for the version running at that casino — which may differ from the published standard.
RTP is not the same as hit frequency. A slot can have 97% RTP but only pay wins on 20% of spins (low hit frequency, high volatility). Another can have 95% RTP but pay on 40% of spins (high hit frequency, low volatility). Choose based on both metrics for your play style.
FAQ
RTP — FAQ
What does RTP mean in online casinos?+
RTP (Return to Player) is the percentage of all wagered money a casino game pays back over millions of rounds. A 97% RTP slot returns $97 per $100 wagered on average. The remaining 3% is the house edge. RTP is a long-run statistical average — it does not predict what you will win or lose in any individual session.
Is a higher RTP always better?+
Higher RTP means lower expected losses over time — generally better for the player. However, RTP and volatility are separate metrics. A high-RTP, high-volatility slot may go 200 rounds without a win, then pay large. A lower-RTP, low-volatility slot pays small wins frequently. The best choice depends on your bankroll and risk preference.
Can casinos change a game’s RTP?+
Some game providers allow casinos to select from multiple certified RTP versions — for example, 94%, 96%, or 97% for the same game. This is legal and disclosed via the game’s information screen. Casinos choosing lower RTP versions earn more per spin. SlotsVader is unusual in publishing the actual RTP for every game on its platform — most casinos do not.
How do I find the RTP of a slot game?+
Click the “i” or “?” button inside any slot game — this opens the game information or paytable screen which displays the actual RTP for the version you are playing. Alternatively, search the game name plus “RTP” — most major slots have their standard RTP published by the developer. The in-game figure is authoritative for the specific casino you are playing at.