What RTP actually measures
Return to Player (RTP) is a mathematically derived percentage calculated over tens of millions of simulated spins. It tells you the house edge from the player’s perspective.
| RTP | House edge | Classification |
|---|---|---|
| 99%+ | Under 1% | Exceptional (rare) |
| 96–98% | 2–4% | Good — target this range |
| 94–95% | 5–6% | Industry average |
| Below 94% | Over 6% | Below average — avoid |
A slot listed as 96.5% RTP at a licensed casino must be running certified game code. Regulators such as the MGA require operators to publish or make available the RTP of every game in their library.
What volatility (variance) actually means
Volatility describes the shape of the payout distribution, not the total amount returned. Two slots can share a 96% RTP and play completely differently.
| Volatility | Win frequency | Typical win size | Suited to |
|---|---|---|---|
| Low | High — frequent small hits | Small multiples of the bet | Casual players, bonus wagering |
| Medium | Balanced | Moderate wins, occasional spikes | Most players |
| High | Low — long dry spells | Large wins, jackpot potential | Risk-tolerant, bigger bankrolls |
| Very High | Very low | Massive wins possible | Experienced, disciplined players |
How RTP and volatility interact
The combination of both numbers defines a game’s real-world feel:
- High RTP + Low volatility — steady, predictable play. Good for clearing wagering requirements because slots typically contribute 100% and the bankroll lasts longer.
- High RTP + High volatility — the mathematically fairest exciting game, but requires patience and a sufficient session bankroll.
- Low RTP + High volatility — the worst combination for most players. The house takes more per spin and wins arrive infrequently.
Where to find RTP before you play
- Game info / paytable panel — tap or click the ⓘ icon inside the slot.
- Developer’s website — Pragmatic Play, NetEnt, Play’n GO all publish official RTP tables.
- Casino game lobby filter — some operators let you sort by RTP.
- Independent databases — sites like WizardOfOdds catalogue verified RTPs.
If the casino does not display RTP and the developer’s page shows a range (e.g., 94%–97%), ask support which variant is configured. A licensed operator must answer this question — it is a regulatory requirement.
Bankroll planning by volatility
A practical starting point for session bankrolls:
| Volatility | Minimum recommended session bankroll |
|---|---|
| Low | 50× your chosen bet size |
| Medium | 100× your chosen bet size |
| High | 200× your chosen bet size |
| Very High | 300× or more |
These are rough guides, not guarantees. No session bankroll eliminates the possibility of a losing session.
For a broader overview of what to look for when selecting a game and an operator, see our guide to choosing a safe online casino. Review operators with certified game libraries on our casinos page.