Best Payout Online Casino UK 2025: Compare the Best Payout Casinos

How to find the best payout online casino UK

There are five key stages to picking the best-paying online casinos in the UK. These steps represent the research you should do before claiming your first deposit bonus and free spins. And along with our detailed and independent online casino reviews, you can tell a good deal from a bad one. So, let’s look at those steps before claiming the casino bonuses…

Independently research casino payouts

We pride ourselves on getting the facts and presenting them in an easy-to-understand fashion. That’s why you’ll find lots of payout percentage information on this page. For example, we present the payout rates for different UK casinos and casino games. But that doesn’t mean that you shouldn’t verify everything for yourself. Checking our figures against those of the game providers at the best payout casinos will give you peace of mind.

Choose a welcome bonus and free spins

It’s important to pick a decent UK welcome bonus at high-payout online casinos. This should be a casino bonus offer that best suits your playing style. So, when picking a UK casino welcome bonus, ensure you can meet the wagering requirements. The same goes for any free spins, winnings, and other online casino bonuses credited to your account. Read our in-depth reviews of the best payout casinos for more detailed information.

Select the top casino game providers

We all have our favourite casino game providers. Whether that’s the bigger names like Microgaming, NetEnt or Evolution Gaming. Or smaller companies like Yggdrasil, Ezugi and Play’n GO. But not every online casino carries all providers – though some do! Therefore, choosing high-payout casinos featuring your favourite game providers is important. Again, we detail all these things in our independent online casino reviews.

Pick one of the best payment methods

It's worth considering the payment methods offered by UK online casinos before signing up. Most online casinos in the UK will accept deposits and withdrawals via debit card, prepaid card and bank transfer. However, PayPal and other eWallets may be less widely available. Plus, some payment methods like Skrill and Neteller aren’t always eligible for welcome bonus offers at top payout casinos. So, always check your payment options ahead of time.

Choose casinos licensed by the UKGC

Finally, always choose the best payout online casino sites licensed by the UK Gambling Commission. The UKGC ensures that sites offering the best online casino payouts are above board. They also ensure that the best payout casino games are rigorously tested for fairness by eCOGRA – more on this later. The UKGC will also resolve disputes between players and the best payout casinos in the UK. This is why UKGC-licensed sites are a must.

Return to player (RTP) vs the house edge

You may wonder about the difference between the return to player (RTP) percentage and the house edge. Well, essentially, one is from the player’s perspective. The other is from the perspective of an online casino site or a house. However, we tend to rate high-paying online slots with RTP percentages and table games with house edge statistics. So, high-paying slots and other video slots use RTP. Table games and live casino games use house edge instead. There’s another metric only used for high-paying and other online slots…

Payout percentages (RTP)

As discussed above, the best payout online slots use an RTP percentage. But what does it mean, exactly? Well, it’s a percentage of the money put in compared to what is paid on average. Let’s illustrate this with an example. If some of the best payout online slots have an RTP of 98%, what does it mean? This means that for every £1 wagered, the machine will pay an average of £0.98. Therefore, the house edge (if we use that term for video slots) would be 2%. And it’s worth pointing out it’s an average – you can win more and lose more at the best payout casinos. Also, be aware of RTP variables – many UK casinos offer different RTPs for the same game!

Online slot volatility

This is another point of confusion for new UK players at the best payout casinos. All online video slots are given a volatility rating. These are low, medium and high. Or a mixture of those ratings, such as medium-high. Low volatility means the slot will consistently pay out more often, but the amounts will be fairly low. High volatility, conversely, means higher payouts that come along very inconsistently. And a medium volatility rating is a nice middle ground. Payouts and the speed with which they come will also be average.

Roulette house edge

Many players at the best payout casinos think that betting on red or black is a 50-50 wager. And it’s close, except for one thing. The house edge in roulette is guided by the number of zero pockets on the wheel. Because the rare times that the ball ends up in a zero pocket means that both bets on red or black fail. That’s why French or European roulette (with a single zero pocket) has a house edge of 2.70%. Meanwhile, American roulette, with not one but two zero pockets, extends the house edge to a fairly substantial 5.26%. So, if you have the choice, stick to the French/European version.

Blackjack house edge

The blackjack house edge at the best payout casinos is trickier to work out compared to roulette. However, if we assume that the player always makes the correct call given what is more likely to win each time, we can say that the house edge is as little as 0.5%. This tiny house edge means players will likely experience a fair few wins when beating the house or seeing it go bust. Nevertheless, an online casino still has the odds in its favour. So, the longer you play, the more likely you will see the house claw back some of your winnings. You have been warned!

Live dealer game payouts

Most UK live dealer games are based on traditional table games, so they use house edge instead of RTP. The regular versions of roulette and blackjack feature the same house edge percentages as given above. Alternative versions like mini roulette or blackjack surrender will have slightly different stats. Insurance bets also change things in various ways. Therefore, we recommend looking up the house edge of the specific version you’re playing. A simple search will give you all the info you require from the best payout casinos each time.

How to calculate the value of casino bonuses

When claiming free spins or bonus spins, you can do some simple calculations to tell you the overall value of the bonus. After completing the wagering requirements, we need to calculate the expected return and take off the expected loss. For this, we'll use the example of 50 free spins with wagering requirements of 35x. Here's how it's done:

Expected returns

Each of our 50 free spins is worth £0.10 (i.e., 10p per spin). To calculate the expected return, we must multiply the number of spins by the value of the spins and the RTP percentage of the slot in question. Let's say our slot of choice has a healthy RTP of 98%…

• Number of Spins (50) x Value of Spins (£0.10) x RTP (98%) = Expected Return (£4.90)

Expected losses

Next, we must determine how much we are expected to lose while completing the 35x wagering requirements. We multiply our expected return by the wagering requirements by 1—the RTP percentage. Here's how it would look for our example free spins bonus…

• Expected Return (£4.90) x Wagering (35) x 1- RTP (2%) = Expected Loss (£3.43)

Bonus value

Lastly, we must work out what we have left at the end. That means taking the Expected Loss away from the Expected Return. This will show us the true value of the bonus. Plus, this information can be used to compare casino payouts and bonuses…

• Expected Return (£4.90) - Expected Loss (£3.43) = Overall Bonus Value (£1.47)