Layer_1 (2)

 How to Calculate House Edge in Online Casino Games

user-circle
Admin
blog-date
July 24, 2025
How-to-Calculate-House-Edge-in-Online-Casino-Games
Stay updated on our latest posts by subscribing!
Subscribe

The house edge refers to the built-in advantage of the casino in every game. It indicates to you the average percentage of every bet that the casino keeps as its profit. The house edge is part of the game rules; for example, an edge of 4% means that players will lose about €4 for every €100 bet on average. If you know this number, you can know which games give better odds.

What Is House Edge and Why Does It Matter?

The house edge may seem like a complex concept, but it’s quite simple. It’s just the percentage of your bet that the casino expects to take in the long run. The higher the house edge, the more money the casino makes. The lower the house edge, the higher the player’s chances are of walking away with a win. If an example of a slot is 96% RTP to the player, there’s a 4% edge to the house. So, the house keeps around $4 of every $100 wagered over time.

How to calculate House Edge

The basic house edge formula is:

House Edge = ((Total Bets − Total Winnings) ÷ Total Bets) × 100 

Thus, the generic formula is: 

House Edge = 100% − RTP 

For instance, let’s assume that players make bets totaling $100 and win back $95. The $5 ‘left over’ is what the benefit of the casino is; hence, the house advantage would be equivalent to 5%. 

Here’s another example. Imagine you bet €1 on a single number in European Roulette (1 in 37 chance), then you’d win €35. So, the house edge here is about 2.7%, as the actual odds don’t quite correspond precisely to the payout.

How Casinos Profit 

Consider a coin flip. If the payout is even (1:1), then the house edge is 0%. However, if the casino pays you $0.90 for every $1 win, even though you still win half the time, you’ll still be losing $0.05 per bet on average. That’s a 5% house edge. That’s the way games are always designed by casinos, giving less than “true odds” in the long run to make a profit. Even if you win now, the math favors the house over time.

Conclusion

Understanding how to calculate the house edge will make you a better player. You will know which games offer favorable odds and be able to moderate your expectations. Whether you are spinning a roulette wheel or playing a round of slots, knowing the edge puts you at an advantage. Optimizing for low house edge, high RTP games all the time, and in the long run, it will save your money and help sharpen your strategy.

FAQS

What is the house edge in online casino games?

The house edge is that small theoretical advantage over the players. It represents an average percentage of every bet that the casino keeps as profit in the long run.

How do you calculate the house edge in an online casino?

You can calculate the house edge using this formula:

House Edge = ((Total Bets − Total Winnings) ÷ Total Bets) × 100 

House Edge = 100% - RTP (Return to Player). This formula shows what percentage of every bet that the casino makes it is expected to keep on average.

Why is understanding the house edge important for players?

Understanding the house edge is a matter of helping the players make informed choices. That includes identifying which of the games offer better odds and planning on how to manage the losses over time. Generally, therefore, the lower the edge, the better your shot.

Which casino games have the lowest house edge?

Blackjack (with optimal strategy), video poker, and baccarat (betting on the banker) are among the lowest house edges in casino games; usually less than 1%, which is much more favorable for the players.


RECENT POSTS

Stiff hand in blackjack
Think about this. You sit at a blackjack table and get 10 and 6. The dealer shows 10. Your hands become sweaty. Hit? Stand? Hide under the table? Take a breath. You are holding what players call a stiff hand. Today, we'll explain it in clear words so you know exactly what to do. So, […]
READ MORE
user-circle
Admin
blog-date
October 20, 2026
Money Train 5 New Features and Higher Stakes
Big news for slot game fans. Relax Gaming has launched Money Train 5, the fifth game in its popular Money Train series. Many players felt that the story was over. This guide explains what's new, what stays the same, and what "high stakes" really means. Why is Money Train 5 a big deal? Money Train […]
READ MORE
user-circle
Admin
blog-date
October 1, 2026
online casino without verification
Signing up for an online casino can seem slow. You send your ID. You wait to be approved. Then you wait again to withdraw your money. This is why more players now look for online casinos without verification. These sites let you sign up fast. They skip most of the routine paperwork. This guide shows […]
READ MORE
user-circle
Admin
blog-date
September 21, 2026
Casino sites that accept US players
Many people in the US ask the same thing. Which casino sites accept US players, and are they safe? The answer is not always clear. We looked at a huge list of casinos accepting US players and pulled out the key facts. Is it legal to play online casinos in the US? Many people consider […]
READ MORE
user-circle
Admin
blog-date
September 21, 2026
online casino India
Online casinos in India are one of the most searched topics for players who like to play at home. Every year, more Indians try slots, live tables and card games on their phones. This guide explains how online casinos work in India. This also includes popular games and what to check before signing up. Is […]
READ MORE
user-circle
Admin
blog-date
September 3, 2026
casino sites for Canada
Are you looking for good casino sites for Canada? You are not alone. More Canadians play online casino games every year. But not every site is safe or fair. This guide will help you find genuine casino sites for Canada. This will show you what you need to check before playing. It will also tell […]
READ MORE
user-circle
Admin
blog-date
August 28, 2026
1 2 3 … 36
READY TO EXPERIENCE THE BEST ONLINE CASINOS WE RECOMMEND
mobile casino
Join thousands of satisfied bettors enjoying top-tier gaming, secure platforms, and unbeatable bonuses.
EXPLORE TOP CASINOS
© 2026 Top Casino Bet. All rights reserved.