Two Types of RTP You Should Know
When researching slot games, you'll often encounter an RTP figure — but what many players don't realise is that there are effectively two different RTP values that can apply to any given slot:
- Stated (or Base) RTP: The theoretical percentage set by the game developer and verified by testing laboratories.
- Live (or Actual) RTP: The real payout percentage recorded at a specific casino over a defined period.
These two figures can differ — sometimes significantly — and understanding why is valuable for any informed slot player.
What Is Stated RTP?
Stated RTP is what you'll find in a game's paytable, on the developer's website, or in independent game reviews. It's calculated over billions of simulated spins and represents the game's theoretical long-term average under standard conditions.
For example, a game certified at 96.5% RTP will pay back €96.50 for every €100 wagered — but only when observed across an enormous, statistically significant volume of play.
What Is Live RTP?
Live RTP reflects actual player outcomes at a real casino over a real time period (often the past month or rolling 30 days). Some casinos publish this data transparently, allowing you to see whether a game is currently paying above or below its stated average.
Live RTP is influenced by:
- Sample size: A casino with fewer players on a given game will show more volatile live RTP figures due to limited data.
- Recent large jackpot hits: If a player recently won a major jackpot, it could briefly push the live RTP above average. Conversely, if no big wins have occurred, live RTP may sit below stated levels.
- RTP configuration: Some game developers allow casinos to choose from multiple RTP settings (e.g., 94%, 96%, or 97%). The live RTP will reflect whichever setting the casino has selected.
The RTP Configuration Issue: What Casinos Can Change
This is one of the less-discussed realities of online slots. Many game providers offer casinos a choice of RTP settings for their games. A slot might be advertised at 96.5% RTP by its developer, but the casino hosting it may have selected a lower configuration — say, 94% — which is entirely legal provided it's disclosed.
This is why the stated RTP you find in a generic review may not reflect the actual RTP of that game at the specific casino you're playing on.
How to Check Which RTP Configuration a Casino Uses
- Check the in-game paytable at that specific casino. Some games dynamically display the currently active RTP setting.
- Look at the casino's game information pages. Regulated casinos in jurisdictions like the UK are required to display the actual RTP of each game they offer.
- Ask customer support. Reputable casinos should be able to confirm which RTP configuration is active for any game.
- Look for casinos that publish live RTP data. Transparency-focused operators share monthly or rolling payout reports.
Practical Implications for Players
Understanding the difference between stated and live RTP leads to smarter decisions:
- Don't assume the RTP in a review applies to your casino — verify it directly.
- Use demo play on the specific casino you intend to play on, not just on any site that hosts the game.
- Favour casinos that are transparent about their RTP configurations and publish live payout data.
- Be especially cautious on unlicensed or less regulated platforms where RTP oversight may be weaker.
Summary
Stated RTP gives you a theoretical baseline; live RTP shows you what's actually happening at the casino level. The gap between them is real and worth investigating — especially since some casinos legally operate games at lower RTP configurations without clearly advertising it. Always verify the RTP of a game at the specific platform you're using before committing real money.