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400% Bonus Sites

Online casino sites offering a 400% deposit bonus.  5 sites were found. Terms and conditions and wagering requirements apply.

If you’re looking for mobile casinos, casino sites and slot sites that offer a 400% bonus, then you’re in the right place! All the sites we have listed here offer a 400% deposit bonus which is great if you want to get more gameplay from your deposit and spin those reels a little longer.

If you’re new to the online casino world, you may be wondering what all these various bonuses mean. We have deposit bonuses, non-deposit bonuses, free spins with and without deposits and no wagering bonuses. It can get a little overwhelming but we’ll break everything down for you and give you a little more information so you can choose what type of bonus would suit you best. 

What is a 400% deposit bonus?

A 400% deposit bonus means that you will receive a bonus of 400% of the amount you deposit. So if you deposit £10 of your own money, the casino site will then give you an additional £40 in bonus money to play with. This is what is known as a ‘deposit bonus’ because you have to deposit real cash in order to claim a bonus. 

The bonus amounts can differ vastly between casino sites. Some may offer a bonus as little as 50%, others may offer a bonus of up to 2000%! 

All of these deposit bonuses will be displayed in a similar way, such as ‘deposit £10 and receive a 400% bonus’ or ‘get a 400% bonus on your first deposit’. 


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So what are no deposit bonuses and free spins then?

As well as deposit bonuses, you’ll often see offers like ‘deposit £10 and get 100 free spins’. This is known as a free spin bonus. Rather than a slot site giving you bonus money to play with, they give you free spins to play on the slot games. The free spins are usually limited to either a particular slot game or slots from a particular software provider. 

Sometimes, you will also see an offer along the lines of ‘Get a £20 no deposit bonus when you sign up’. This means that when you sign up to a casino site, you will be given £20 bonus money to play with, without having to deposit any cash. 

What is the minimum amount I need to deposit to claim a 400% bonus?

This totally depends on each particular slot site. Occasionally you may find a slot with a low £5 minimum deposit with 400% bonus which is great for players wanting to make a low minimum deposit and getting the most out of it. There are sites with £1 minimum deposits and £3 minimum deposits, but very rarely would you be able to claim a bonus with these. 

In the majority of online casinos, mobile casinos and slot sites, the minimum amount you will need to deposit is either £10 or £20. The main reason for this is due to taxation on bonuses (operators are also now taxed on bonuses they give as well as money they receive) and due to the transaction fees operators have to pay. Therefore, they tend to ask for slightly higher minimum deposits in order to cover their costs. 

Are there any catches with a 400% deposit bonus?

Most of the time yes! Unless you’re playing in a no wagering casino site (which we’ll come on to in a bit), then yes, there is a catch. It comes in the form of wagering requirements and maximum win limits!

Even though you’re being given extra funds to play with, it is actually quite difficult to win real cash when you’re playing with bonus money. Casinos and slot sites don’t want to literally give away free cash, so they apply wagering requirements and caps on the amount you can win while playing with bonus money. 

What are wagering requirements?

Wagering requirements are the amount of times you need to play through your bonus before you can withdraw any money. The wagering requirements will be listed in the terms and conditions and are usually listed alongside the bonus information as well. They usually look like ‘ 40x wagering’ and they differ from site to site. Some will have lower wagering requirements such as 10x  and some will have high wagering up to 60x

If you see an offer such as ‘deposit £10 for a 400% bonus – 40x wagering’ this means that if you wanted to withdraw any winnings, you would first need to wager your bonus amount of £40, 40 times (£1600 in bets). So unless you won a large amount, by the time you played through the wagering, you would be left with very little or none. 

Max win limits

Another thing to note is whether there is a limit to the maximum amount you can win from a deposit bonus. Hidden in the terms, you will often see something like ‘max win £20’ which means if you’re playing with your bonus money, the maximum amount you will ever be able to win is £20. Even if you won a jackpot prize, you still only claim £20. So it’s definitely worth reading the terms to find out if there are any restrictions if you claim a 400% bonus. 

No wagering casino sites

So now you can see how the wagering and maximum win limits can severely scupper your chances of winning real cash with a bonus, but there are sites out there that will give you a bonus with NO wagering requirements or caps on winnings. 

One of the first online casinos with zero wagering is PlayOJO and they refer to themselves as the ‘fair casino’. There are no wagering requirements and no restrictions. What you see is what you get and what you win is what you keep! It’s a no-nonsense site that many players love because there are no catches. 

Because PlayOJO paved the way for zero wagering, other casino and slot sites have also followed suit and so there is now a growing number of mobile casinos, online casinos and slot sites with no wagering. Paddy Power Games has a selection of zero wagering games, along with Betfair, NoBonus casino and Pokerstars to name a couple. 

Best deposit methods for a 400% bonus

If you’re planning on claiming a 400% bonus with your deposit, make sure you check which deposit methods you can use in conjunction with claiming a bonus. Not all deposit methods can be used when claiming a bonus and it should be clear in the terms if any banking options are not available. 

Debit Card – There are usually no fees to pay when depositing with your debit card. Transactions are fast, quick and easy and you can usually always claim a bonus using this method. Withdrawals can also be made using a debit card. The drawbacks are that some players don’t like using a debit card that is linked to their bank account and any transactions would appear on your bank statement which can go against you when applying for credit.

Credit Card – Payments to online casinos using a credit card are no longer allowed in the UK, so be aware that any site you see with credit cards as a banking option, will be for non-UK casinos. 

Pre-paid cards – These are fast becoming one of the most popular payment methods for online casinos as bonuses can usually be claimed with them and there are no charges for deposits. You simply purchase a card with a pre-paid amount already on there, which means it is not linked to your bank, you don’t have to provide any personal financial information and it can be easier to budget and manage your money. The main disadvantage is that you can’t withdraw funds to pre-paid cards. 

E-wallets – There are so many different e-wallets available and depending on your country of residence, some will be more popular than others. With an e-wallet, you load money into your e-wallet account and can then use that to credit your casino account. The additional layer of security is appealing to players and transactions are safe, fast and secure. Withdrawals are allowed on many e-wallets but the main drawback is that not all methods allow you to claim a bonus. Neteller and Skrill are often not included in accepted payment methods when claiming a deposit bonus. 

PayPal – Paypal is one of the most well-known money transfer services in the world and is accepted in a growing number of online casinos. It is usually free to deposit via PayPal and transactions are safe, secure and fast. If you want to claim a bonus and deposit via PayPal, check the terms as sometimes bonuses aren’t available when depositing with PayPal. 


Casino Superlines

Casino Superlines

Restricted in the UK400% UP TO £1000 *T&C's Apply.

New Players Only.

Sign up for a 400% first deposit bonus up to £1000 + further . 18+, new players only, terms apply (No UK players)   


T&C's: 1. The 400% welcome bonus is only redeemable upon a player/household/computer’s initial approved deposit. 2. The 400% bonus is available up to the value of €1000. For example, if you deposit €50 you will receive a bonus of €200 amounting to a total balance of €250 3. The bonus balance together with the deposited balance is subject to 30 times wagering requirements before withdrawal can be made.

La Fiesta Casino

La Fiesta Casino

Restricted in the UK400% UP TO £1000 *T&C's Apply.

New Players Only.

Sign up for a 400% bonus up to £1000. 18+ new players only, terms apply (No UK players)  


T&C's: 400% Welcome Bonus 1. The 400% welcome bonus is only redeemable upon a player/household/computer’s initial approved deposit. 2. The 400% bonus is available up to the value of €1000. For example, if you deposit €50 you will receive a bonus of €200 amounting to a total balance of €250 3. The bonus balance together with the deposited balance is subject to 30 times wagering requirements before withdrawal can be made.

Triomphe Casino

Triomphe Casino

Restricted in the UK300% UP TO £1000 *T&C's Apply.

New Players Only.

Brand new site with a chic Parisian theme to it, Triomphe Casino is packed full of the lastest slots, classic slots, table and casino games plus Live Dealer games. Great selection of software providers including NetEnt, NYX, 1x2 and Betsoft. Not accepting UK players

NOT ACCEPTING UK PLAYERS. Sign up for a 300% first deposit bonus up to 1000 Euros.  





Deposit £10 Get £40 *T&C's Apply.

New Players Only.

Unibet Casino has been running 10 years now and has an amazing selection of games and brilliant reputation for customer service.

Deposit £10 get £40. 18+, New Customers Only, T&Cs Apply  


T&C's: 18+. New Customers Only. Minimum deposit £10. 50x wagering requirement apply. Bonus will expire 30 days after opt-in. Further T&Cs apply. #AD

Betfred Lotto

Betfred Lotto

Deposit £5 Get £15 *T&C's Apply.

New Players Only.

Bet £5 get £15 in Free Bets  

  • Slots:

T&C's: Betfred Lotto is fixed odds betting on an outcome of an official lottery draw or numbers game. New customers only. Available until 31/10/20. Register using promo code LOTTO. Deposit and stake £5 on Lotto or Numbers draws and settled within 14 days of registration for £15 in Free Bets. First bet must be placed on Lotto or Numbers draws. Free Bets credited within 24 hours. Free Bet amount is not included in any return and expire after 7 days. Payment restrictions apply. SMS validation may be required. Full T&Cs apply.