How do casino apps make money? Almost entirely from the house edge: every slot and table game pays back slightly less than players stake over time, and the gap is the operator's revenue. The apps are free to download and can't sell gambling credit through Apple or Google, so the money comes from play.
Casino apps earn the difference between what players stake and what games pay back, known as gross gambling yield.
Expected loss = stake × house edge, so faster play and bigger stakes cost more per hour.
Apps must be free to download, and real-money credit can't be bought through App Store or Google Play billing.
From 1 April 2026 operators pay 40% remote gaming duty on profits, plus a 1.1% statutory levy.
Bonuses and free spins are a marketing cost the operator expects to recover through the house edge.
Main income
House edge on games
European roulette house edge
2.70%
Big Bass Bonanza RTP
96.71%
Remote gaming duty
40% from 1 April 2026
Online casino games GGY 2025-26
£5.7bn
How do casino apps make money? From the house edge
Every casino game has a built-in margin. A slot with a return to player (RTP) of 96% is designed to pay back £96 for every £100 staked, averaged over a very large number of spins. The other £4 is the house edge, and across thousands of players it becomes a predictable income for the operator.
Individual players win and lose in the short term; that is what makes gambling exciting. But the operator doesn't need any one player to lose. It only needs lots of play, because the edge does the rest. That is the honest core of the business, and the reason losses are likely for players over time.
Everything else, from welcome offers to loyalty schemes, sits on top of that margin. More short answers like this are in our casino app questions hub.
The house edge in pounds: expected loss per hour
The useful formula is simple: expected loss = total staked × house edge. Total staked depends on stake size and how many rounds you play, which is why speed matters as much as the edge itself. These examples use published RTPs or standard game maths, with the number of rounds per hour as a stated assumption.
Worked expected-loss examples
Game
House edge
Stake and pace (assumed)
Staked per hour
Expected loss per hour
European roulette, live
2.70%
£1 a spin, 60 spins an hour
£60
£1.62
European roulette, RNG at the 5-second minimum
2.70%
£1 a spin, up to 720 spins an hour
£720
£19.44
Big Bass Bonanza (96.71% RTP)
3.29%
50p a spin, 300 spins an hour
£150
£4.94
Example slot with 94% RTP
6%
50p a spin, 300 spins an hour
£150
£9.00
Two lessons stand out. First, the same game costs far more per hour when played quickly, which is one reason UK rules set a minimum of 2.5 seconds per slot spin and 5 seconds per round for other casino games. Second, a few points of RTP make a real difference: the 94% slot costs nearly twice as much per hour as Big Bass Bonanza at the same pace.
You won't pay to download a UK casino app, and you won't buy chips through the App Store. Apple's App Review Guidelines (opens in a new tab) say real-money gaming apps must be free on the App Store (5.3.4) and may not use in-app purchase to buy credit or currency for real-money gaming (5.3.3). Google Play's real-money gambling policy (opens in a new tab) likewise says gambling apps must be free to install and must not use Google Play's in-app billing.
That means deposits go through the operator's own cashier, using methods such as debit cards, PayPal, Apple Pay or Pay by Bank, rather than through the store. Our page on in-app purchases in casino apps explains this further.
Withdrawal fees aren't a real profit source either. Gambling Commission guidance says any withdrawal charge must be disclosed before you deposit and must not exceed the direct processing cost. Coral and Ladbrokes publish that they charge no withdrawal fees; Casumo charges £3 on withdrawals under £10 and nothing from £10 upwards.
Do casino apps rig games to make more money?
No. A licensed app doesn't need to, and UK technical standards forbid it. Games must not adjust outcomes to hit a target return, so a slot can't 'tighten' because you've been winning. Rules, payouts and probabilities can't change while a game is available, and the RTP or likelihood of winning must be available before you play.
Apps also don't have lower RTP by default than the website. Some games are released in more than one RTP version, so the honest advice is to check the game's help or information screen for the figure that applies. Our guides on how to find a game's RTP in an app and whether casino apps rig games cover this, and is RTP lower on casino apps tackles the myth directly.
Great Britain gambling yield, April 2025 to March 2026
Measure
Figure
Total GGY including lotteries
£17.5bn (up 4.4%)
Remote casino, betting and bingo GGY
£8.3bn (up 6.9%)
Online casino games GGY
£5.7bn
Of which online slots
£4.8bn
Active online accounts
25.7 million at the end of the last quarter
Slots make up most of online casino yield. That fits the maths above: slots are quick, popular on phones and carry a larger edge than games such as blackjack played well.
Where the money goes: tax, levy and running costs
Operators don't keep all of the yield. Players don't pay tax on gambling winnings in the UK; the duty is paid by operators instead.
The statutory gambling levy, in place since April 2025, charges online operators 1.1% of the previous year's GGY, funding research, prevention and NHS treatment.
Game studios, payment providers, staff, customer support, compliance and marketing all come out of what remains.
As a rough illustration, if players lose a net £100 on an app, about £40 goes in remote gaming duty and around £1.10 goes towards the levy, before any running costs. That squeeze helps explain why operators care so much about keeping customers playing, and why the rules on marketing and customer interaction matter.
How bonuses and affiliates fit into casino app revenue
A welcome offer is a customer acquisition cost. The operator gives something of value, such as free spins, expecting that some new customers will keep playing and that the house edge will recover the cost over time. Our page on why casino apps give free spins works through the numbers.
UK rules limit how hard bonuses can push play. From 19 January 2026 wagering is capped at 10 times the bonus, and promotions mixing products, such as a bet that earns casino spins, are banned. Operators must also stop marketing and new bonuses to customers showing strong signs of harm.
Comparison sites are part of the picture too. BestApps earns commission from partner casinos when readers sign up through our links, which is explained in our advertiser disclosure. It doesn't change the maths on this page.
What the business model means for you
Knowing how the app makes money helps you use it on your own terms. Treat play as paid entertainment, and decide the cost before you start.
Pick a monthly amount you are happy to spend, the way you would budget for a night out.
Set it as a deposit limit in the app before your first deposit.
Check a game's RTP in its help screen and prefer higher RTPs if cost per hour matters to you.
Remember that pace multiplies cost: fewer, slower rounds stretch the same budget further.
Use the real-time net position display and reality checks to see where you stand.
Stop when the budget is gone, and never deposit more to win back losses.
Our partner offers are worth having for some new players, but they don't change the house edge on the games you play. All are 18+ and terms apply.
Coral: bet £10 on slots, get 100 free spins at 10p each (£10 of spins) on selected games; accept within 48 hours, valid for 7 days, no wagering on free spin winnings. PayPal, Skrill, Neteller, Paysafe, prepaid cards and certain debit cards don't qualify.
Ladbrokes: play £10 on slots, get 50 free spins a day for 10 days, up to 500 at 10p each (up to £50 of spins); claim before 23:59 each day, valid for 7 days, no wagering. Some payment methods are excluded.
PlayOJO: 80 free spins on Big Bass Bonanza at 10p each (£8 of spins) with a first deposit of £10 or more; no wagering, winnings paid in cash. Excludes Northern Ireland.
Every offer below still runs on games with a house edge. 18+, terms apply.
Coral and Ladbrokes are both run by LC International Limited (Entain). If you already hold an account with one Entain brand, you may not be able to open another; check the terms first.
Significant terms: 18+. New players only. Offer runs 01/10/2026 to 01/02/2027. Deposit (certain types excluded) and bet £10+ on slot games to get 100 free spins (selected games, £0.10 each, 48 hrs to accept, valid 7 days). No wagering on free spin winnings. Deposits by Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards do not qualify. Restrictions and T&Cs apply. GamCare.org.uk
Read our Coral app reviewLicence: LC International Limited, Gambling Commission account 54743. Offer checked 5 October 2026.
Time limitClaim daily for 10 days; each batch valid 7 days
Worked valueUp to 500 spins at £0.10 (up to £50 in spins)
Significant terms: 18+. New customers only, from 14/11/25 until further notice. Certain deposit methods excluded. Deposit and spend £10+ on slots for 50 free spins a day during the first 10 days after first deposit and registration (max 500, £0.10 each, selected games, claim before 23:59 each day, valid 7 days). No wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers deposits do not qualify. Restrictions and T&Cs apply. GamCare.org.uk
Read our Ladbrokes app reviewLicence: LC International Limited, Gambling Commission account 54743. Offer checked 5 October 2026.
Significant terms: 18+. New UK customers (excluding Northern Ireland). First deposit only. Minimum deposit £10. 80 free spins on Big Bass Bonanza, £0.10 each. No wagering requirements; winnings paid in cash. Cannot be used with any other offer. Only available to players who arrive through the designated offer link. Full T&Cs apply. GamCare.org.uk
Read our PlayOJO app reviewLicence: Skill On Net Limited, Gambling Commission account 39326. Offer checked 5 October 2026.
18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.
Frequently asked questions
Do casino apps make money from players losing?
Yes, in aggregate. The operator's revenue is gross gambling yield, which is what players stake minus what games pay back. Because every game has a house edge, the operator earns that margin across all play, even though individual players sometimes win. It doesn't need any one person to lose, only steady volume. Understanding that helps you treat play as a cost. See our RTP glossary entry and the guide to house edge by game for the numbers behind it.
Why are casino apps free to download?
Because Apple and Google require it. Apple's guidelines say real-money gaming apps must be free on the App Store, and Google Play's policy says gambling apps must be free to install and must not use its in-app billing. Operators also want as few barriers to sign-up as possible, since their income comes from play rather than downloads. For the store rules in full, see whether casino apps are free to download.
How much does a casino app make from each player?
Operators don't publish per-player figures, but you can work out your own expected cost. Multiply the total you stake by the house edge. For example, £150 of spins on a slot with 96.71% RTP has an expected cost of about £4.94, while £60 of European roulette spins at 2.70% has an expected cost of £1.62. Actual results swing widely around those averages. Low stakes casino games shows ways to keep that cost down.
Do casino apps sell my data to make money?
Nothing in the App Store privacy labels for our partner apps says data is sold, but several labels say some data is used to track you across other companies' apps and websites, usually for advertising. Coral's label lists User Content and Usage Data for tracking, while Ladbrokes shows no tracking category. Real-money apps must also hold identity and financial data for legal checks. See do casino apps sell my data and how to read a casino app privacy label.
Is the house edge higher on casino apps than on websites?
Not by default. The app and website usually run the same games from the same studios on one account. Some games exist in more than one RTP version, so check the information screen inside the game for the figure that applies to you. UK standards require the RTP or likelihood of winning to be available before you play, and ban games that adjust outcomes to hit a target. Our RTP on mobile guide explains the checks.
Why do casino apps give bonuses if they want to make money?
Because a bonus is cheaper than losing a potential customer to a rival. The operator expects the house edge on continued play to recover the cost over time. UK rules limit this: wagering is capped at 10 times the bonus from 19 January 2026, and operators must stop offering new bonuses to customers showing strong signs of harm. Read why casino apps give free spins and our guide on how wagering works in casino apps for the detail.
Are casino apps taxed in the UK?
Yes. Operators pay remote gaming duty on their gaming profits, which rose from 21% to 40% on 1 April 2026, and online operators also pay a statutory levy of 1.1% of the previous year's gross gambling yield. Players in the UK don't pay tax on gambling winnings. The duty rise is one reason operators watch costs such as bonuses closely. See remote gaming duty and do I pay tax on casino app winnings for more.
Can a betting system beat how casino apps make money?
No. Systems such as Martingale or Fibonacci change the size and order of your bets, but not the house edge on each one, so the expected cost of play stays the same. They also carry real risks: a run of losses can drain a budget quickly or hit a table limit. In blackjack, basic strategy can reduce the house edge, but it doesn't remove it. Our guide to blackjack strategy on mobile and the roulette app guide explain the maths.
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