The House Edge on Slots Applies to Your Turnover, Not Your Deposit
The house edge on slots is a share of turnover, not a slice of your deposit. Turnover means every bet placed, counted each time, including bets funded by money the game has just paid back, so 20 EUR re-staked across an evening can send several hundred euro over the line. That is why a game returning 96 per cent does not hand back 19.20 of a 20 EUR deposit: the 4 per cent is charged on every pass, and 20 EUR funds around 500 EUR of stakes before it is gone.
How does the house edge work on a single bet?
It is charged on the bet, not on the balance, and then charged again on the bet after it.
A game's return to player is the share of stakes it gives back on average over an enormous number of rounds. The house edge is the remainder: 100 minus the RTP. A game at 96 per cent carries a 4 per cent edge, one at 94 per cent carries 6. That subtraction is the entire calculation, and it is why the two figures are interchangeable ways of stating one property.
What the subtraction does not tell you is what the percentage multiplies. It multiplies the amount staked in that round, and nothing else. Stake 0.20 and the expected cost of the round is a fraction of a cent, whatever balance sits behind it. Stake 0.20 again and another fraction of a cent is expected, because the second round has no knowledge of the first. Repeat a few thousand times and the small number does all the work. The mechanics of where that return comes from, and why catalogue size tells you nothing about it, are on the games page; this article picks up at the question that one leaves open.
What is turnover, and why is the edge taken from it?
Turnover is the total of every bet placed, counted each time, whatever the money for it happened to be a moment earlier.
That last clause is the part people do not expect. Win 5 EUR on a spin and put it on the next one, and that 5 EUR is turnover too. It does not matter that it was the operator's money a second ago, or your deposit a minute before that. What makes it turnover is that it was staked. The term for the running total goes by several names, wagered amount and total staked among them, and they all mean the same sum.
The clearest confirmation is in how a regulator makes operators count their own revenue. Under the British licensing rules, gross gambling yield is calculated as A + B - C, where A is the "total of any amounts that will be paid to the licensee by way of stakes" and C is the "total of any amounts that will be deducted by the licensee in respect of the provision of prizes or winnings". Read the formula for what it leaves out: deposits are not in it. The operator's income is built on stakes, so the quantity the business is measured by is the same quantity the edge is taken from. Those rules bind operators licensed in Britain, a market this site does not cover, and they are quoted here only because they state the accounting plainly.
How much turnover does a 20 EUR deposit produce?
Around 500 EUR at a 4 per cent edge, if the balance is played until it is gone.
The arithmetic is short enough to check. Every unit staked is expected to cost the edge. Keep going until the balance is empty and the total expected cost is the whole balance. So the turnover a balance produces is the balance divided by the edge, and a small edge produces more turnover rather than less.
| If the game returns | House edge | Turnover from 20 EUR | Spins at 0.20 |
|---|---|---|---|
| 97 per cent | 3 per cent | about 667 EUR | about 3,333 |
| 96 per cent | 4 per cent | about 500 EUR | about 2,500 |
| 94 per cent | 6 per cent | about 333 EUR | about 1,667 |
| 85 per cent | 15 per cent | about 133 EUR | about 667 |
These figures illustrate the conversion rather than describe any particular game, and the assumptions matter: bets small next to the balance, no bonus running, and play continuing to exhaustion. Stop early and the sums stop with you.
The useful reading is the one that contradicts the intuition. A 96 per cent game does not return 19.20 of a 20 EUR deposit, because 96 per cent is what comes back from one pass, and the money that comes back gets staked again. Cross the line 2,500 times at 4 per cent a time and there is nothing left to cross it again. The slower a game takes your money, the more of your money passes through the game, and those are the same sentence.
Does the game know how much is left in my balance?
No, and the technical standards for gaming software rule it out in plain words.
RTS requirement 7 states that "adaptive behaviour (that is, a compensated game) is not permitted", and sets out what an acceptable random number generator has to do: output "uniformly distributed over the entire output range" with outcomes "distributed in accordance with the expected or theoretical probabilities", unpredictable to the point that it is "computationally infeasible to predict what the next number will be", and non repeating, so that the sequence does not cycle or synchronise with another instance.
Two things follow, and they point in opposite directions. Nothing tightens after a win, because the game has no mechanism for noticing one. And nothing loosens after a losing run either, for the same reason. A spin that has not paid in two hours carries exactly the edge it carried at the start, so no timing, staking pattern or choice of moment alters it. The edge never accelerates, and it never pauses.
What is the lowest house edge on slots?
There is no published ranking to answer that with, and the number that governs a specific game is set one licence at a time.
What a regulator fixes is a floor per game, not a rate per casino. In Malta, the Malta Gaming Authority announced on 28 May 2021 that it was lowering the minimum RTP for games offered online "from ninety-two per cent (92%) to eighty-five per cent (85%)". A floor is not a rate: knowing a jurisdiction permits as little as 85 leaves every value above it open. And the floor travels with the licence rather than with the brand. Hugo Casino is licensed in Curacao by Antillephone N.V., so the Maltese minimum is not the one that governs its catalogue, and what has and has not been confirmed about that licence is set out in the review.
Which leaves one figure worth looking up, and it is per game. The return of the title in front of you is published in that game's own information panel, reachable from the info icon, and it is the only version of the number that is certainly about the build you are opening. Studios ship some titles in more than one configuration, so a value quoted on a third party table can be accurate in general and wrong for your session. You can open Hugo Casino and read the panel of any game that interests you, then subtract from 100 to get the edge. How to read that panel alongside volatility, which decides how the return is distributed rather than how large it is, is covered on the slots page.
What changes when a bonus is running?
The turnover stops being an outcome and becomes a specification. Everything above describes ordinary play, where the volume you produce depends on when you stop. A wagering requirement removes that freedom by naming the volume in advance.
At the documented x45 requirement, a 150 EUR bonus taken as a worked example has to be staked 6,750 EUR before the balance becomes withdrawable. Producing 6,750 EUR of turnover on games returning around 96 per cent costs roughly 270 EUR of margin on average, which is the same divide and multiply as the table above, run in the other direction. That multiplier was checked on 2026-08-25 against third party sources rather than from an account, because nobody here has opened one, and the current values belong in the operator's cashier. The clauses that decide whether that volume can be completed at all, including maximum stake and game weighting, are on the bonus page.
That is why the turnover question is worth understanding before a bonus is accepted rather than after. The requirement is not a fee charged once; it is an instruction to send a specific amount of money through a margin, and the margin is charged on each pass.
Gambling is restricted to adults aged 18 and over. Understanding what the edge is taken from makes a session legible, and it changes nothing about the arithmetic: turnover has a cost, that cost is the product, and no choice of game or stake removes it. Deposit limits, time limits and self exclusion, along with free and confidential help services, are described on the responsible gaming page.
Frequently asked questions
Is turnover the same as the amount I have lost?
No, and the gap between them is usually large enough to be alarming the first time an account statement shows both. Turnover is gross volume, the sum of every stake. Loss is the edge applied to that volume. A player who deposited 20 EUR and produced 500 EUR of turnover has lost 20, not 500, but the operator's records correctly show half a thousand wagered. Neither figure is wrong; they measure different things, and reading the wagered column as money gone is the most common way to misread a statement.
Does betting bigger or smaller change the house edge?
It changes nothing about the percentage and everything about the clock. The edge is a share of each stake, so doubling the stake doubles the expected cost per spin and roughly halves how many spins a balance survives. Total expected cost to exhaustion is the same balance either way. Stake size buys time and swing, not better odds, which is why raising stakes after a losing run cannot recover it.
If I withdraw halfway through, does the edge stop?
Yes, for the money that leaves, because the edge only ever applies to bets placed. Money sitting in a balance costs nothing and money withdrawn costs nothing. The practical catch is reversal: where an operator lets a pending request be cancelled, the money sits in reach for as long as the request is open, and anything pulled back that way becomes stakeable again. A withdrawal that gets reversed and re-staked was never a withdrawal, it was a pause in turnover.
Do table games and live dealer work the same way?
The arithmetic is identical, the numbers are not. The edge is still a share of each stake and still compounds across turnover, but on a table game it comes from the rules of the game rather than from a paytable, and wherever it is smaller, a balance produces more turnover before it runs out. The difference that catches people is bonus weighting: tables and live dealer often count for a fraction of their stake, or nothing, towards a wagering requirement, so the same 100 EUR staked can be 100 EUR of real turnover and 10 EUR of qualifying turnover at once.