400% Deposit Casino Bonuses
Discover 400% deposit bonus offers in the UK. On this page, we have listed all the 400% casino bonus offers you can get right now.
The bigger the bonus is, the rarer it is, and this is true about 400% deposit bonuses. However, you can still find first-deposit bonuses that quintuple your deposit.
List of Sites With 400 Casino Bonus - April 2026
Casino sites with 400% match bonus offers are extremely rare in today's online gambling industry. We have listed and tested offers that are as close to 400% deposit bonus offers as possible here on this list.
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Play here » New Players Only, 18+. Wager from real balance first. 10x wager the bonus money within 30 days and 10X wager any winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. Wager calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days / Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: 1 time the bonus amount or from free spins: £20. Min Deposit £10 required. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full terms and Bonus terms apply. GambleAware.org.
TheOnlineCasino review » 1st deposit bonus 200%/£50 + 20 bonus spins Wagering requirements 10x (B) Forfeitable 1st deposit bonus Yes Minimum deposit for bonus £10 Bonus code TOC20 TheOnlineCasino is an easy-to-use casino site. It runs on the ProgressPlay platform, meaning it is packed with good games, solid customer support and new players are greeted wit... TheOnlineCasino review »
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Play here »
Betvictor casino review » 1st deposit bonus 200%/£20 + 50 bonus spins Wagering requirements 10x (B) Forfeitable 1st deposit bonus Yes Minimum deposit for bonus £10 Bonus code With a long history spanning over two decades, BetVictor is a well-established UK brand that needs few introductions. Many gamblers might associate the brand mainly with its ... Betvictor casino review »
18+ New customers only. Opt in, deposit & wager £10+ on selected games within 7 days of registration. Get £20 in Casino Bonus Funds (10x wagering. Max withdrawal £250) + 50 Free Spins for Age of the Gods: God of Storms 3. 30 days expiry. Full terms and Bonus terms apply. GambleAware.org.
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Play here »
Mecca Games casino review » 1st deposit bonus 200%/£20 + 50 bonus spins Wagering requirements 10x (B) Forfeitable 1st deposit bonus Yes Minimum deposit for bonus £10 Bonus code Mecca Games comes across as a site pretty clearly aimed at slot fans. The game selection includes just over two thousand titles. The casino also promotes Megaways and Jackpot... Mecca Games casino review »
18+, New players only. Min Deposit £10 (excl. PayPal & Paysafe). £20 bonus (x10 wagering) on selected games. Max win £50. Plus 50 Free Spins (10x wagering). Max win £50. Full terms and Bonus terms apply. GambleAware.org.
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Play here » New players only. Wagering from real balance first. 10X wagering the bonus money within 30 days. Contribution varies per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days. Max conversion: 1 time the bonus. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Please gamble responsibly. Full terms and Bonus terms apply. GambleAware.org.
Mr Mobi Casino review » 1st deposit bonus 200%/£20 Wagering requirements 10x (B) Forfeitable 1st deposit bonus Yes Minimum deposit for bonus £10 Bonus code In 2016, Mr Mobi joined the ranks of UK online casinos. The then newcomer offered players an easy-to-use casino experience with good mobile support. Mr Mobi has since become ... Mr Mobi Casino review »
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Play here » New players only. Wagering from real balance first. 10X wagering the bonus money within 30 days. 10x wagering the winnings from the free spins within 7 days. Contribution varies per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus offer and any winnings from the offer are valid for 30 days. Free spins and any winnings from the free spins are valid for 7 days from receipt. Max conversion: 1 time the bonus amount or from free spins: £1.50. Limited to 5 brands within the network. Withdrawal requests void all active/pending bonuses. Excluded Skrill and Neteller deposits. Full Terms apply. Full terms and Bonus terms apply. GambleAware.org.
Mr Super Play casino review » 1st deposit bonus 150%/£50 + 15 bonus spins Wagering requirements 10x (B) Forfeitable 1st deposit bonus Yes Minimum deposit for bonus £10 Bonus code Mr Super Play has been operating since 2017, and it has everything that you need for a good casino experience. As you enter the site, you will instantly stumble upon a variet... Mr Super Play casino review »
Table of Contents
What Is a 400% Casino Bonus
A 400% casino bonus is a promotional gift a casino gives you when you make your first deposit. It is relative to your deposit and gives you 400% of the amount you deposit as bonus money. The bonus will also state the maximum amount in pounds.
The most common bonus offer in UK casinos is 100%, so getting a 400% deposit bonus is a big deal. These offers are very rare, and a casino website with such an offer is not easy to find.
- Deposit £10 and the casino will give you additional £40 of bonus money
Big bonus percentages often mean that the maximum bonus amount is small. This is why you often see these relatively small casino sign up offer deals that then pack a huge punch.
Editor's Note: Since the bonus regulation change in 2026, these bonuses have become nonexistent. UK Casinos dropped their bonuses due to the rule changes regarding bonus wagering. Casinos just don't want to risk giving high-value bonuses with 10x or smaller wagering. Before the change, these offers had 35x-50x wagering requirements.
Best UK Casinos With 400% Deposit Bonus
Our experts have highlighted the very best 400% casino promotions. These casinos will boost your deposit with a deposit match offer and provide you with fast payments, a great selection of slots and live dealer games, well-working mobile usability and an overall top-notch experience.
The best 400% deposit bonuses are listed below:
- BetVictor - 200%/£20 + 50 bonus spins
1. BetVictor
While the BetVictor bonus is not 400%, it is the best you can get right now at 200%. There are so few of these bonuses that we can't even show you a single one.
The reason why we picked this one as the top offer is because of its versatility. This bonus gives you something for slots, live casino games and game shows. The latter two categories are something you don't see often.
BetVictor is a famous casino brand that made the jump to online gambling very early on. They have been honing their skills and updating the casino site to better meet players' demands. It is no surprise that our experts gave it a high rating in the review of BetVictor Casino.
The bonus here might not have a huge maximum, but it does pack quite a punch. It is the most you can get at the moment with a £10 deposit.
| 🎁 Bonus | 200%/£20 + 50 bonus spins |
|---|---|
| ❌ Drawbacks | Small maximum bonus |
| ✅ Best Features | Large international brand, good customer support, all-in-one casino |
Play at BetVictor »
How We Rate 400% Casino Bonuses
We rate 400% bonuses by calculating the total value of the offer and checking the bonus terms, wagering requirements, withdrawal limits, and maximum bonus amount. After this, we compare the bonus to other current offers and industry benchmarks to give you a complete overview.
Our seasoned casino experts have been reviewing casinos and bonuses for years and are very familiar with what is available in the UK.
When testing and reviewing casinos and their bonuses, these are the features we look for:
- Maximum bonus size - The bigger the better
- Minimum deposit requirement - Small requirements are better
- Wagering requirement - The less wagering, the easier it is
- Maximum withdrawal limits - We want to see large caps, if at all
- Time limits - Bonus must have at least 3 days to use
- Game restrictions - You must have options for using the bonus
You can learn more about our casino reviews and what is important by reading our online casino review guidelines.
400% Deposit Bonus Calculator
Use our 400% deposit bonus calculator and see how wagering requirements and other features may affect your bonus.
Your deposit:
£ 0
Bonus amount:
£ 0
Terms and Conditions
Like all other bonus offers, 400% casino bonuses have their own terms and conditions. They are basically the same as with smaller bonuses, but certain numbers might be tweaked a bit differently.
Here are the terms that are especially important:
- Minimum deposit: This is how much money you need to deposit to claim the bonus. The casino's own minimum deposit may be smaller than what the bonus requires.
- Maximum bonus: No matter how much you deposit, this number tells you how much bonus money you can get.
- Wagering requirement: This is the most important term. It means how much you need to play until you can cash out your bonus. It is always a multiplier of either the bonus you get, the deposit you make, or both added together. You can use our wagering calculator to see how much you need to play.
- Withdrawal limit: The casino might put a limit on how much real money you can get from your bonus offer, no matter how well you did or how quickly you wagered the bonus.
- Game weightings: Some games are better for wagering than others, and the casino lists how well each type works. For example, table games might only wager 10% compared to a slot that is 100%.
- Sticky bonuses: In the UK, sticky bonuses are rare. These are offers where you can't withdraw the initial bonus sum but only what you win with it. Always pick a non-sticky bonus.
By knowing these terms, you are ready to handle most of the bonus offers on the market. It is still always good to double-check the bonus terms and see what each bonus offer is all about.
New UK Casinos With 400% Deposit Bonus
New casinos are always interesting, and from time to time, fresh ones can offer you as high as a 400% bonus. These offers are not easy to come by, which also means that finding new casino websites that have 400% bonuses is not something that happens often. New casinos often go for smaller high-value bonuses.
There are currently no new UK casinos that have 400% deposit bonuses or other very big bonus offers. In case any new ones come up, we will list them here on this page.
How To Claim a 400% Deposit Bonus
1. Find a 400% casino bonus from our list
Here, we have listed tested and reviewed casinos with a 400% welcome bonus. Take a look at the casino list, see what is available for UK players and pick your favourite.
2. Read the casino review
After picking a casino, you can read the casino review and see what our seasoned experts thought about the site. Let their experiences on the site help you make a decision.
3. Go to the casino
On every casino review, there is a big green ‘PLAY HERE' button that takes you straight to the casino. If the bonus is an exclusive special offer, then this button is your way to get that deal.
4. Sign up and claim your bonus
When you get to the casino, you need to sign up and create a casino account. Just fill in the required information, and you are ready to deposit and claim your bonus. Just make sure you read the bonus terms.
Find 400% casino bonuses
Pros and Cons of High Bonus Percentages
Even though big welcome bonuses look good, they do have their own pros and cons. We noticed that the size of the bonus received is the biggest plus, but as a negative, we see that these offers are rare and have more restrictions.
Here are some of the biggest perks and flaws of 400% bonuses.
Pros:
Perfect for trying out a casino
Low minimum deposit requirements
Simple bonus concept
Maximises the value of your deposit
Cons:
Maximum amounts are usually small
Terms can be more difficult
Big bonus percentages are very rare
Comparison With Other Deposit Bonuses
Deposit bonuses come in all shapes and sizes. It is true that the bigger the bonus percentage is, the rarer they are on the market. Getting a 400% match bonus is not easy, but if you go lower, you will get plenty more options.
Check out some of our other deposit bonus pages and see what offers are available for each.
100% Deposit Bonus
A 100% deposit bonus is the most common and straightforward offer at online casinos. It doubles your deposit amount, providing a balanced boost to your bankroll. This type of bonus is ideal for players who prefer a direct and simple approach with friendly terms.
These offers are readily available, and our recommendations are Mr Vegas, 10Bet and Videoslots.
You can discover the best deals on our 100% deposit bonuses page.
200% Deposit Bonus
Moving up the scale, a 200% deposit bonus triples your deposit, offering a more significant boost. While the terms might be slightly heavier, these offers usually have reasonable conditions with some added punch. At the moment, these are generally the biggest bonuses you can get that are always available.
Casinos like BetVictor and Mecca Games have these offers available right now.
You can explore the casinos with 200% deposit bonuses to find a bonus that matches your preferences.
300% Deposit Bonus
A 300% deposit bonus quadruples your deposit amount, providing you with a huge uplift to start with. The casinos offer these generous bonuses mainly for newcomers, and you want to keep an eye out for conversion caps that may limit your winnings. We are now entering the uncommon offer range. While 200% bonuses are always available, 300% bonuses are not. These show up every now and then, but you have to keep an eye out for them.
Our experts have listed the top 300% deposit bonuses to help you. Check out the reviews and details of their terms before choosing your bonus.
500% Deposit Bonus
At the high end of the scale, a 500% bonus offers a massive increase, multiplying your deposit by six. If you think 400% bonuses are rare, these are even harder to find. They may provide the biggest match percentages seen in the UK, but it has been a while since we've seen a single one.
Check out the 500% deposit bonuses page to find deals of this calibre. Remember to evaluate the terms and conditions before your decision.
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