How to Claim a 400% Casino Bonus

The huge competition between online casinos has resulted ever increasing bonus offers. Overall, the higher they are, the rarer they’ll be. Once you’ve found a 400% casino bonus, you'll need to know the ins and outs involved, as in many cases, things are not quite as straightforward as you might hope.


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The Best 400% Casino Bonus in EU and the Rest of the World

400% up to €2,000
  • Great weekly promotions
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* more terms & conditions apply
La Fiesta
400% up to £1000 + 50 Free Spins
  • Crazy Mexican theme
  • Over €3000 in bonus funds
  • Cryptocurrencies accepted
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400% Deposit Match Bonus up to £10,000 + 25 Free Spins
  • Huge range of games
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Lucky Red
400% Bonus up to £1,000
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400% Deposit Bonus up to £2,000
  • Sign up via Google or Facebook
  • Mobile-optimised site
  • Huge number of games providers
* more terms & conditions apply


What Is a 400% Casino Bonus?

A 400% casino bonus is a reward or incentive to either motivate new players to join an online casino or to encourage them to continue to play there. This allows the player to stretch their bankroll, enabling them to play for longer, thereby increasing their chances of winning.

Generally speaking, these 400% deposit bonus funds are a variation of the traditional online casino welcome bonus. You may find that the 400% bonus online is given on the second or third deposit into your online account – or it may well be part of a wager-free offer.

Then again, it’s possible that a 400% first deposit bonus may only be triggered by a special promo code or be part of a VIP offer. No matter the way you find it, we suggest that you check the site's terms and conditions before accepting any bonuses.


Why Do Casinos Offer 400% Bonuses?

With so many sites chasing new players for business, it’s no surprise to see the incentives and bonuses designed to attract them are constantly rising in monetary value.

A 400% first deposit bonus is designed to catch the eye of and attract new customers wanting to take advantage of this huge amount. Any bonuses are going to help towards increasing possible winnings, and watching your bankroll swell up thanks to a 400% casino bonus is going to both lengthen and enhance your playing time.


The Mathematics Behind the Bonus
  • Wager £10 – 400% Casino Bonus = £40
    Total bankroll =£50
  • Wager £20 – 400% Casino Bonus = £80
    Total bankroll = £100
  • Wager £30 – 400% Casino Bonus = £120
    Total bankroll = £150
  • Wager £50 – 400% Casino Bonus = £200
    Total bankroll = £250


How to Choose Your 400% Casino Bonus Offer

Before you accept any 400% online casino bonus, or any bonus for that matter, it’s always a good practice to examine the website’s bonus terms and conditions. Though a 400% casino bonus may at first appear to the novice player as a monetary gift, these bonuses may come with all sorts of obstacles that may make you question the wisdom of claiming them in the first place.

  • The first thing to check is the wagering requirements to ensure that they are realistic. Anything above 40x is going to be a struggle to finish.
  • See if there are any minimum or maximum bets allowed. If the maximum amount is lower than £5, you’ll find the bonus will take too much time to complete.
  • Then you’ll need to see if the casino bonus 400% promotion is attached to selected games. Many will only be playable on the slots.
  • Some bonuses will come with an expiration date, which means that your time to play it through is limited. This can also include the time taken to withdraw any winnings you might have made by playing through the 400% casino bonus.
  • Another thing to check for is that the cashing out limits are high enough to cover any amount of winnings. You may find that after winning big, you'll only be allowed to cash out a small percentage of that win.
  • Finally, the bonus might need a bonus promo code in order to activate it. Normally, these codes will be on the same site that’s offering the bonus, though in some cases, you’ll need to search the web for them.
Wagering Requirements
  • Wager £50 – Wagering Rate 20x = Total you need to wager = £1,000
  • Wager £100 – Wagering Rate 35x = Total you need to wager = £3,500
  • Wager £200 – Wagering Rate 5x = Total you need to wager = £1,000


Pros and Cons of 400% Casino Bonuses

A 400% welcome bonus might appear to be a gift from the casino gods; however, the reality can be a little more complicated than you think. Below we’ve listed the advantages and disadvantages, though in truth, a 400% deposit bonus will be very similar to other offers.


  • Quadruples your starting bankroll
  • Big starting advantage to boost winnings
  • Possible to gamble with only small amounts
  • Can be used to test out casino games
  • Often comes with other promotional benefits, like free spins


  • Completing wagering requirements can be difficult
  • Few UK sites offer this promotion
  • Low cash out limits often attached

How to Claim Your Bonus

Claiming a 400% casino bonus requires very little input on your part, as you can see below:

  1. The first thing you’ll need to do is register at an online casino that’s offering a 400% welcome bonus.
  2. Input the requested personal and banking details.
  3. Add funds to your online casino account. Your bonus will be credited to your account automatically.
  4. You’ll notice the total amount showing in your account will display the new total almost instantly.


Alternatives to 400% Casino Bonus – 150%, 200%, 300%, 500% Bonuses

When you visit a new online casino for the first time, there’s a very good chance that you’ll receive a welcome bonus offer which is designed to get you to sign up and start playing. Keep in mind that many, if not all of these offers, will have a wagering cap/per wager, often limited to £5. The most common one is the matched 100% deposit bonus offer.

  • 100% Welcome Bonus

This 100% bonus is the standard welcome offer that you’ll find virtually at all online casinos. The offer itself is very simple to understand. Essentially, whatever you deposit into your new account, the casino will match it with real funds. Here’s an example: if you deposit £20, then the casino adds another £20; your bankroll will double in value. As we mentioned above, please be aware of any time limits and check the wagering requirements.

  • 150% Welcome Bonus

Upping the ante just a little, we have the popular 150% casino bonus. Deposit £10 into your online casino account, and you'll find that the total has gone up to £25.

  • 200% Welcome Bonus

First things first, don't assume that a 200% bonus is going to be necessarily better than a 100% one. That’s because they could each offer you the same amount of bonus funds. One site might have cashout restrictions, meaning you won't be able to touch a percentage of your winnings. The math here is simple: if you make a nominal deposit of £30, then the casino will add an extra £20, giving you a total of £30 to play with.

  • 300% Welcome Bonus

Like the 400% bonus, these will be hard to come by. Let’s face it, a 300% bonus offer is going to result in some serious cash coming your way. Imagine – you deposit £20, and it turns into £80 instantly! As always, make sure you understand the wagering requirements and be aware of any deadlines.

  • 500% Welcome Bonus

Here we have the rare Holy Grail of all bonuses. Nevertheless, that doesn’t mean you should jump in and take it straight away.

First, check that the casino is legit, with a reputable gaming licence. For this offer, if you deposit £10 and receive a 500% casino bonus, you'll end up with a total bankroll of £60. If the wagering requirements are set at 40x, then you’ll need to place £2,000 in bets with your own money. If the requirements are 20x, then that total goes down to £1,000. Therefore, consider everything carefully before taking the plunge with this bonus.


Summary of 400% Casino Bonus

It’s not surprising that this rare 400% welcome bonus is so popular. Increasing your bankroll by a factor of four means that any player can enjoy playing for much longer. Moreover, the longer you can play, then the better your odds are of scoring some winnings.

Having said all this, we do advise caution with this offer, as the restrictions on both its use and on the eventual cashout can sometimes be difficult to meet. We always suggest playing at a licensed casino, such as the MGA, to ensure that you're claiming a legitimate bonus.


400% Casino Bonus FAQs

❓ Where can I find the best 400% casino bonus? 

If you're playing from the UK, Unibet will offer you £40 when you deposit £10.

❓ Can I keep all my winnings from playing the 400% bonus?

The actual bonus cannot be withdrawn directly. It’s designed to bolster your bankroll and be played on casino games. Any winnings can be credited to your online casino account, and provided you satisfy the wagering requirements or any other stipulations, you’re free to withdraw them.

❓ Are 400% bonuses available at all casinos?

Unfortunately, no. In the UK, they are as rare as hens’ teeth. Once you discover one, you’ll need to make a new account to take advantage of it.

❓ Can UK players claim these 400% bonuses?

Though it’s possible to find 400% casino bonus UK online in the UK, we must point out that they are exceedingly rare. The reason is that many online casinos in the UK are already well established brands, and therefore have no real motivation for offering such generous bonuses.

❓ Do I need a bonus code to claim a 400% casino bonus?

Not necessarily. Sites do offer codes that can only be used on those sites and are not valid for any other online casinos. If you come across a site offering a 400% casino bonus, but there are no codes on offer, then simply sign up, make a deposit, and collect the offer.

❓ Can I claim this bonus with my mobile phone?

Absolutely! Virtually all reputable online casinos will be optimised for mobile, meaning you can experience the thrill and excitement of casino games on your mobile phone. Head over to an online casino, sign up, make a deposit, and then claim your 400% online casino bonus.

❓ Are there any wagering requirements?

On the whole, yes there will be wagering requirements. These refer to the number of times you’ll have to play with your own money before you can access the bonus amount, or any winnings that came from playing it through. How high or low they might be will vary from one online casino to another. With a 400% first deposit bonus, you should expect the wagering requirements to be set pretty high – maybe around 50x.

❓ Does the 400% bonus come with free spins?

This depends very much on the site in question. A 400% slots bonus is possible, but it’ll be rare and not easy to find. We suggest that you check the bonus and promotion information at the online casino in order to see all their special offers. More often than not, a match bonus will have a number of free spins attached to it.

❓ Is there a minimum deposit needed in order to claim 400% bonuses?

Yes, there will be. It’ll vary from site to site, and you’ll find the actual amount listed in the 400% bonus casino site’s bonus terms and conditions. There may well be conditions which vary depending on the actual deposit method.

❓ Can I claim this bonus multiple times?

No, you can’t. Only one 400% online casino bonus can be claimed per newly created account.




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