RTP and Volatility Explained, With a Worked Example
Two numbers matter most when you compare slots: RTP and volatility. One describes the long-run average, the other describes how bumpy the ride is. Here is each one with a worked example in Canadian dollars.
What does RTP mean?
RTP stands for return to player. It is the share of all money wagered that a game is designed to give back over a very large number of spins. A game with a 96% RTP returns $96 for every $100 wagered, on average, across millions of spins. It is not a promise about your session.
What is the house edge?
The house edge is what RTP leaves over: 100% minus RTP. At 96% RTP the edge is 4%, meaning the game keeps an average of $4 from each $100 staked.
How do you work out expected loss?
Multiply the total amount staked by the house edge. Total staked is your stake per spin times the number of spins, so it grows quickly.
| Stake per spin | Spins | Total staked | Expected loss at 96% RTP |
|---|---|---|---|
| $0.50 | 200 | $100 | $4 |
| $1 | 500 | $500 | $20 |
| $2 | 1,000 | $2,000 | $80 |
These are averages. Actual results swing well above and below them, especially over short sessions.
What is volatility?
Volatility, sometimes called variance, tells you how win sizes and frequency are spread. Two slots can share the same RTP and feel completely different.
| Volatility | Typical feel | What to expect |
|---|---|---|
| Low | Frequent small wins | Balance moves gently; big hits are rare |
| Medium | A mix of the two | Some dry spells, some decent wins |
| High | Long quiet stretches, occasional large wins | Balance can drop fast before a feature pays |
How many spins until RTP shows up?
Far more than most people play. Over a few hundred spins, luck swamps the average, which is why one player can walk away ahead while another loses on the very same game. High-volatility games need an even larger sample before results settle near the stated RTP.
Can a betting system beat the house edge?
No. Raising stakes after a loss, lowering them after a win, or timing your play changes how fast money moves, not the edge itself. Every spin is independent, so past results tell you nothing about the next one. The only reliable way to cap losses is to decide your budget in advance. See how to set limits.
Want to see these ideas in action without risk? Try a game in our free slots section and look at the RTP and volatility listed on each page.