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House edge

The casino’s mathematical edge over the player, expressed as a percentage. It’s the flip side of RTP: 96% RTP = 4% house edge.

Also: house edge · house margin

Definition

The house edge shows what share of bets stays with the casino over the long run. It’s directly tied to RTP: if the RTP is 96%, the house edge is 4%.

The lower the house edge, the more favourable the game is for the player in theory. Table games like blackjack often have a smaller house edge than slots.

Related and sources

See also RTP and expected value. Source: Casino game (Wikipedia).

Quick facts

100% − RTPFormula
Often 3%–6%Slots
Often below 1%Blackjack

Example: if the house edge is 2%, of every €100 wagered the casino theoretically keeps €2. A lower house edge is more favourable for the player.

How to account for the house edge?

1

Relation to RTP

House edge = 100% − RTP.

2

Lower is better

A smaller house edge means a more favourable game for the player.

3

Differs between games

Table games often have a lower house edge than slots.

4

Doesn’t guarantee a result

The house edge is a statistical average, not a guarantee for a single game.

Frequently asked questions

Do you always win in a game with a low house edge?

No. A low house edge means only a more favourable theoretical average. In individual sessions chance decides the outcome.

Why do slots have a bigger house edge?

Slots offer large jackpots and bonus features, to balance which the house edge is often higher than table games’.

Guide

Majaeelis – the house edge explained

Majaeelis is the Estonian term for the house edge, the statistical figure that shows how much of every euro wagered a casino keeps for itself over the long run. When a game is described as having a 4% house edge, it means that across a large number of bets the casino retains, on average, four cents of every euro staked, while the remaining 96 cents flow back to players. It is simply the mirror image of RTP, the return-to-player percentage: a 96% RTP equals a 4% house edge, a 97% RTP equals a 3% edge, and so on. The two numbers always add up to one hundred percent because they describe the same money flow from opposite directions.

For an Estonian player, understanding majaeelis matters because it helps you judge which games are kinder to your bankroll over time and which drain it faster. The house edge varies enormously between game types. Some table games, where player decisions influence the outcome, can carry a very small edge when played with correct strategy, whereas many slots and lottery-style games carry a noticeably higher one. Crucially, the figure does not change depending on whether you happen to be winning or losing right now; it is an average that reveals itself over thousands or millions of rounds, not within a single session.

The most common misconception is that the house edge tells you how much you will lose tonight. It does not. Over the short term, chance and variance dominate, so an individual evening can end in a large win or a total loss regardless of the theoretical majaeelis. The number describes a long-run tendency, not the result of any one session. A second frequent mistake is confusing house edge with volatility: a low-edge game can still swing wildly, while a high-edge game may feel relatively steady.

In practice this means the longer you play, the more reliably the theoretical edge turns into your actual result. That is why it pays to favour games whose RTP is transparently published, and to remember that bonus terms such as wagering requirements can push the effective house edge even higher than the headline figure suggests.

In Estonia, licensed casinos operate under a permit issued by the Tax and Customs Board (EMTA), and gambling is legal from the age of 21. Because the edge always favours the house in the long run, treat play as entertainment rather than a way to earn money. Set firm time and money limits, and if you feel you are losing control, reach out to a support helpline for help.