RTP meaning: what return to player really tells you

The RTP meaning trips up more players than any other figure in a casino game. Short for return to player, it sits in a game's information screen as a single percentage, say 96%, which many read as a promise: €96 back for every €100 deposited. That is not what it measures. The rate describes the share of all stakes a game pays back as winnings, over a number of rounds that no single session ever reaches.

Read properly, though, it remains one of the few objective yardsticks for comparing two games. This guide explains where it comes from, what it really costs over an evening and why one title can display several, using examples from the Crazy Dice catalogue, from online dice slots to table games.

What is RTP in a casino?

RTP stands for return to player. You will also see it called the payout percentage or payback rate. The figure expresses, as a percentage, what a game pays out in winnings compared with what it takes in stakes, across all rounds and all players combined.

Its counterpart has a name of its own: the house edge. A game shown at 96% keeps 4% of the amounts played on average; at 97%, it keeps 3%. That gap, not some hidden rule, is what allows a game to earn money for its operator over time.

Another frequent misreading is to take 96% as 96 chances in 100 of winning a round. The rate does not count winning rounds, it adds up amounts, and the share of rounds that pay anything is usually far lower. Nor does it say anything about the size of wins or their rhythm: two games at 96% can deliver sessions that have nothing in common, a point we return to further down.

Where does return to player come from in a game?

RTP is neither measured after the fact nor adjusted according to yesterday's results. It follows from the way the game is designed. The studio knows the probability of every combination of dice or symbols and what each one pays; by weighting those wins by their probability, it arrives at what the game returns on average for every euro staked.

That calculation is then checked against simulations covering millions of rounds, and verified before the game reaches players. The rate covers everything the game can pay: base wins, free spins, wheels, multipliers. The features of special symbols therefore add nothing to the figure displayed, as they are already part of it.

Casino RTP is a share of your stakes, not of your deposit

This is the most widespread misunderstanding. RTP does not apply to the money deposited, but to all the stakes placed, including winnings played again. And the same sum is often staked several times over a session, because every win goes back into the following rounds.

Take a balance of €50 and a stake of €0.50. After 300 rounds, you will have staked €150 in total, three times your deposit. At 96%, the theoretical cost of that session is 4% of €150, in other words €6, and not 4% of the €50 you started with.

That cost therefore depends on two levers: the game's rate and the volume played. Lowering the stake or playing fewer rounds weighs more heavily on an evening's bill than a few tenths of a per cent of RTP. Note too that the 200-euro weekly deposit cap applies to the money paid into the account: total stakes can run well above it, since winnings get played again.

Two percentage points apart: what changes over time?

On a single round, nothing separates a game at 95.50% from one at 97%. The gap only shows once stakes add up. Over €1,000 staked in total, Pure, the Air Dice grid game displayed at 97%, has a theoretical cost of €30.

Lucky Wilds Toro Dice, at 95.50%, comes to €45 for the same volume, half as much again. In between, 20 Super Dice at 95.79% sits at €42.10 and Super Wheels Progressive at 96% at €40.

Those gaps do not make one game ‘good’ and the other ‘bad’: Lucky Wilds Toro Dice relies on reels, sticky wilds and a bonus wheel, Pure on stripped-back grids. On the €150 session described above, the gap between the two comes to no more than €2.25. But for the same enjoyment, repeated evening after evening, the higher rate makes the same budget last slightly longer, on average.

One rate paid back in two different ways

RTP reveals how much a game pays back, never how. A title can pay back its 96% through a steady stream of small wins or through a handful of large payouts with long gaps in between: describing that rhythm is the job of the volatility of a casino game.

The two figures are therefore read together. RTP sets the average cost of a session, volatility how widely results swing around that cost. On a highly volatile game, an evening's result strays far from the average, in either direction; on a calm game, it stays closer, without ever matching the figure displayed.

Nor does a high RTP promise more frequent wins. It only ensures that, over a very large volume, the share paid back will be bigger. Within a single session, volatility is what shapes the experience.

Can one game have several RTPs?

Yes, and it is common. First case: side bets. At the First Person Blackjack table, the main hand climbs to 99.29% with correctly applied basic strategy, while the 21+3 and Perfect Pairs side bets come in at 96.30% and 95.90%. The highest rate only applies to the simplest bet.

Second case: games where your choices matter. In blackjack, the rate displayed assumes perfect play: hitting, standing, doubling or splitting at the right moment. Every departure from optimal blackjack strategy pulls the real return below the advertised figure. On a dice slot, where the player makes no decision during the spin, the question does not arise.

Third case: configuration. Some studios release the same game in several rate versions, and each casino chooses the one it runs. A percentage spotted on another site or in a game review may therefore differ from the one that applies here: only the figure shown by the game, opened at Crazy Dice, counts.

Online casino RTP in Belgium: displayed and observed rates

Across the dice games and dice slots mentioned in this guide, rates sit within a narrow band, from 95.50% to 97%. Table games climb higher when the player plays correctly, as the 99.29% of First Person Blackjack shows. On a single-zero roulette, a straight-up number returns 97.30% by design: it pays 36 times the stake, with one chance in 37 of landing.

A comparative study of the rates these games display and the rates observed on the Belgian market shows that the theory holds. In its 2025 annual report, the Belgian Gaming Commission notes that sites holding a B+ licence, the licence of an online casino authorised in Belgium such as Crazy Dice, paid out 96.80% of stakes as winnings, against 96.86% for online casinos holding an A+ licence. The games display between 95.50% and 97%, the B+ market paid back 96.80%: at volumes of that size, what is observed matches the theory.

That observed rate is simple to calculate: winnings paid out divided by stakes received, over a full year and across all the operators concerned. It shows that, at the scale of a market, exceptional sessions cancel each other out, in both directions. At the scale of a single player, the number of rounds remains far too small for that effect to take hold.

Finding a slot's RTP before you bet

At Crazy Dice, the return to player appears in the information of each game, which you open from the game screen, alongside the rules and the paytable. The simplest approach is to launch the title in demo mode, where available, and check that panel before staking a single euro.

After that, three habits are enough. Compare games from the same family, because the gap between a blackjack table and a dice slot mainly reflects different rules. Check which bet the figure applies to when the game offers several. And set the rate against the volume you plan to play, never against your deposit.

RTP makes nobody a winner: it tells you what a game costs over time. Crazy Dice shows this rate in every one of its games: the online casino for Belgium lets you check it before your first round, and that is still the surest way to choose with your eyes open.

Frequently asked questions about RTP