Same slot, different RTP
Why the figure varies between casinos
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RTP and House Edge Calculator
See what an RTP or a house edge means in dollars. Choose a table game or enter a slot's RTP, add a bet and a number of rounds, and read the average cost.
- Averages, not predictions
- Any slot's RTP, entered by you
- Takes no bets
Work out the average cost of play
Enter a slot's RTP from the game's information screen. Table-game edges follow from the rules. Both fields are linked: RTP plus house edge is 100%.
Enter a bet and a number of rounds to see the result. The calculator needs JavaScript; the explanation below works without it.
The RTP on a slot's page is the figure recorded for the demo or default version. Casinos can run other versions of the same game, so check the game's own information screen where you play. Why the same slot can have different RTPs. Browse the free slot demos and their reviews.
What RTP and house edge mean
Return to player (RTP) is the share of the money wagered that a game pays back on average over a very large number of rounds. The house edge is what is left: 100% minus the RTP. A slot with a 96% RTP has a 4% house edge, which means that on average it keeps $4 of every $100 wagered.
Worked example: $1 a spin for 500 spins is $500 wagered. At 96% RTP the average cost is $20. That is not what you should expect to lose in a session of 500 spins. It is the average of a huge number of such sessions, some of which end well ahead and many of which end well behind.
What the result does not tell you
- It is not a forecast. Short sessions swing far above and below the average, and the swing is bigger on high-volatility games. RTP says nothing about how often or how large the wins are.
- It does not describe your casino's version. The RTP on our review is the figure recorded for the demo or default version. Casinos can run other versions of the same game, so look at the game's own information screen where you play.
- It cannot be improved. No bet size, timing or pattern changes a game's house edge, and a win does not make the next round more or less likely to win.
- Wagering is not the same as the money you put in. Winnings that you bet again count as wagering again, which is why the total wagered can be many times the cash you deposited.
In Ontario, operators must make information on the odds of winning, payout odds and returns easily available before a bet is placed, usually on the game's rules or help page.
Terms used by the calculator
Short definitions, in the order they appear.
- RTP (return to player)
- The percentage of all money wagered that a game pays back on average over a very large number of rounds.
- House edge
- The percentage of each bet the game keeps on average. House edge = 100% − RTP.
- Expected loss
- Total wagered multiplied by the house edge. An average over many bets, not a prediction for yours.
- Volatility
- How widely results swing around the average. Two slots with the same RTP can feel very different, and RTP does not measure it.
- Total wagered (turnover)
- Every bet you place, including bets made with earlier winnings.
Use the numbers with our reviews
How slot games are certified
Ontario testing rules
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Read moreRTP and house edge questions
What is a good RTP?
A higher RTP means a lower average cost per dollar wagered, so on that measure a higher figure is better for the player. But RTP is a long-run average, it can differ between versions of the same game, and it says nothing about how bumpy a session will be.
Does a higher RTP mean I am more likely to win?
No. RTP measures how much is paid back on average over very many rounds. It does not tell you how often you will win or how likely you are to finish a session ahead.
Can I use the calculator to find a winning strategy?
No. House edge is fixed by the game's rules and math. The calculator shows what that edge costs on average; it cannot reduce it.
Why does the same slot show different RTPs at different casinos?
Studios can offer several certified versions of a game, and operators choose which one to run. Our guide on the topic explains how to find the version you are playing.
Why is there no blackjack option?
Blackjack's house edge depends on the table's rules and on the player's decisions, so one preset would mislead. If you know the figure for your table, type it into the house edge box.
Where do the table-game figures come from?
They follow from the games' rules: one zero in 37 pockets for European roulette, two in 38 for American roulette, and the standard eight-deck baccarat figures. Your table's rules decide the real number.
Sources
- AGCO: Registrar's Standards for Internet Gaming Other · Standard 4.05 (operator advantage in game specifications), 4.06 (odds, payouts and returns information easily available to players), 2.04 (marketing must not imply winning is probable or that skill changes a chance game). Version updated 14 May 2026.
- Wikipedia: Baccarat (card game), house edge Other · Standard eight-deck house edges: banker 1.06%, player 1.24%, tie 14.36% (8 to 1).
Play within your limits
Online gambling in Ontario is for adults aged 19 or older who are physically located in the province. Set a deposit limit before you play, and never gamble with money you need for essentials. A calculator shows what play costs on average. The only way to avoid that cost is not to play.
Play responsibly
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