Pop into most online casinos, and you will surely come across the best online casino bonus offers. The value of these promo deals can vary from site to site. Many throw up 100% casino bonuses, and for some players, these will be ideal.

However, there are far more lucrative offers to snap up if you know where to look. Of course, we’re talking about 400% casino bonus deals, and there are a great number of these 400 casino bonus offers for UK players out there. They represent some of the biggest online casino bonuses around, not to mention the best casino deals.

In this article, we will dive into the world of 400 bonus casino offers and explain how they work. We’ll also discuss the things you need to know about them, and why they may be ideal for you. Without further ado, let’s look at how these bonuses are structured.

Our Best Match Bonus Casino Picks

Cobra Casino amazing welcome package of up to 1.050 EUR and 300 free spins!
cobracasino big logo
1st deposit: 100% up to €500 + 250 FS. Code: ‘COBRA100’.
2nd deposit: 50% up to €150 + 50 FS. Code: ‘COBRA50’.
3rd deposit: 125% up to €400. Code: ‘COBRA125’.
Melbet casino welcome package of up to €1750 + 290 Free Spins!
1st deposit: 50% up to €350 + 30 FS;
2nd deposit: 75% up to €350 + 40 FS;
3rd deposit: 100% up to €350 + 50 FS;
4th deposit: 150% up to €350 + 70 FS;
5th deposit: 200% up to €350 + 100 FS.

Best Online Casinos Offering Top Match Bonuses [2023]



Sign Up Bonus

Safe & Trusted


Get Started

Up to €1750 + 50 Free Spins
Rating 9.99 out of 10
Up to €2000
Rating 9.98 out of 10
Up to €3500 + 270 Free Spins
Rating 9.98 out of 10
Up to 1260% Bonus
Rating 9.97 out of 10
Up to €1000
Rating 9.97 out of 10
100% up to €500 + 200 Free Spins
Rating 9.95 out of 10
Up to €500 + 150 Free Spins
Rating 9.93 out of 10
100% Up To €300
Rating 9.90 out of 10
100% up to €500 + 200 Free Spins
Rating 9.85 out of 10
Up to €3500 + 100 Free Spins
Rating 9.81 out of 10

The Maths Behind a 400 Casino Bonus

There is more than one type of 400 casino bonus out there for you to claim. The two main types are a 400% match bonus, and the $400 casino bonus. Of course, the 400 Casino Bonus in the UK will be claimed in British pounds sterling.

The 400% first deposit bonus casino offer is a percentage-based deal, provided to players who deposit at a casino. The way it works is simpler to understand than you might think. With this offer, a player deposits $100 and claims a 400% bonus.

This means that players will earn the equivalent of 400% of that initial $100 deposit as a bonus. It equates to a bonus worth $400. Add your initial $100 deposit to that figure, and you can start playing $500 in the kitty. In this case, it is known as a 400% First Deposit Bonus.

By contrast, a $400 casino bonus works somewhat differently. This may be made available via a 100% match. So, for instance, players could deposit $200 and claim a 100% match, giving them another $200 in bonus funds.

This would see them start with the $400 mentioned in the offer when their initial $200 deposit is added. At the same time, a 100% match with a $400 deposit would give them a $400 bonus, and thus, $800 to start off with when their $400 deposit is included. In many cases, this would be known at an online casino as a $400 Deposit Bonus.

Both types of casino bonus 400 offers can be claimed at internet betting sites, and both represent some of the best casino deals about. You aren’t limited to using US dollars, either. There are bonuses in British pounds sterling, euros and even 400% bitcoin deposit bonuses up for grabs at online casinos.

Learn About Promos Codes and Wagering Requirements

It is not uncommon for 400% deposit bonus casino offers to include promotional bonus codes. Moreover, most 400 percent bonus casino deals will carry wagering requirements. You must learn about both. Here are the details you need:

  • Promotional Bonus Codes: Promotional bonus codes can often be found on a casino’s promos page. Promo codes tell the casino which offers you wish to claim. A typical online casino 400% welcome bonus may require you to enter a code such as WB400 to claim the offer. They need to be entered either via the e-registration form at sign-up, on the cashier’s page when a deposit is made, or via customer support. Try our Campeonbet Casino bonus code list for more.
  • Wagering Requirements: Wagering requirements are there to ensure that you don’t claim big casino bonuses and then walk away with the cash. They state that you must wager your bonus (and sometimes your deposit, too) several times before you can withdraw. Low wagering casino bonuses typically feature playthrough rates of 30x or less. High roller casino bonuses may have wagering requirements of anything from 40x up to 75x. You should always check the terms of your $400 Casino Deposit Bonus before you claim it.

The Nitty Gritty: Things to Consider When Claiming Bonuses

As handy as a good 400 bonus casino offer is, there are a few things you need to consider when claiming bonuses.  Let’s go through these points one at a time…

When looking at snapping up a welcome bonus from a casino, you may wish to look at the games it is valid on. If, for instance, you claim a 400 free spin casino bonus at a NetEnt casino, it is likely that you can only use those spins on NetEnt games. There are plenty of best bonus slots-based deals out there like this to be found at 400 bonus online casinos.

If you are playing at a casino which only accepts players from certain countries, the bonuses will likely reflect that. A casino’s 400% bonus for UK players can only be claimed by those residing in the United Kingdom. However, most RTG casinos with 400% bonus deals will accept players from almost anywhere, including the United States.

Some promos are also tied to payment methods. For instance, in a bona fide PayPal Casino, a 400% bonus will likely only be valid for players who deposit using that e-wallet. Other bonuses may exclude players who deposit using Skrill, Neteller, or other e-wallets.

Many online casinos also frequently offer reload bonus deals. These internet  live casino bonuses work in the same way as welcome offers but are available for already existing members who continually deposit.

When claiming these offers, you must check the wagering requirements, as they may differ from those found in the original welcome package.

The Pros and Cons of a 400% Casino Bonus

  • They can provide with a big balance to start off with
  • Some deliver free spins to players, with no deposit required
  • They enable players to try casino games without losing their own cash
  • Some free bonuses may feature caps on what can be won with bonus funds
  • Most bonuses come with wagering requirements. It is up to you to separate the good from the bad

100% Bonuses vs. 400% Bonuses – A Popularity Contest

Most online casinos still prefer to offer 100% casino bonus deals, rather than 400% casino bonus offers. Why? The former tends to be more popular because casinos can seldom slap down huge wagering requirements on simple, double-your-money matches.

However, with online casino $400 bonuses, more substantial bonus funds are available for players without them having to deposit the same sums.

For instance, a typical 100% bonus can see players net a $100 bonus with a deposit of $100. However, with a 400% bonus, players who deposit just $25 can also end up with a $100 bonus.

The casino is effectively handing out a more considerable sum of free cash, without you having to deposit as much. As a result of this, the wagering requirements tend to be higher, and thus, less popular with players. You may end up loosing some money, but you can recover a part with casino cashback bonuses.

It is important to note that this is not always the case, though. There are many top 150% casino bonuses, $200 casino bonus deals, $300 casino bonus promos, and even 500% match casino bonus offers (often advertised as deposit 10 play with 60) out there for you to claim which offer up reasonable wagering requirements.

You just need to know where to look. This is something we will help you with in just a second.

Everything You Still Need to Know – Our 400% Casino Bonus FAQ Guide

If you still have $400 bonus casino queries, or new casino 400% bonus questions, then we may be able to help. Now for some answers to some of the more common questions regarding bonus deals.

Normally no. However, some 400 bonus online casinos may choose to do so. Some even opt to deliver 400 free spin bonus online casino offers to players.
Not at all. A 400% deposit bonus casino deal is open for everyone. High rollers often like these types of deals, but they aren’t reserved for them in any way, shape or form.
With a typical 400% deposit bonus at a casino in the UK, you won’t be able to withdraw until you have fulfilled the wagering requirements of an offer. Once those requirements have been met, you can withdraw any winnings you have won with bonus funds.
Some $400 bonus online casino deals have time limits attached to bonuses. If you haven’t fulfilled the wagering requirements or used the bonus within the allotted time frame, the bonus is withdrawn.
You likely failed to enter a necessary promo code to claim a deal. Alternatively, you may have deposited using a payment method not supported by the bonus. Either way, contact customer support and they may be able to rectify the problem.

Get Started with 400 Casino Bonus Deals Now!

Players who are raring to go and claim a 400% casino bonus offer can use our page to find the hottest deals around. We regularly update our 400 casino bonus sites list. Any of the domains we recommend have been tested and approved by our team and feature ideal casino bonus offers.

They carry top deals which feature reasonable wagering requirements. Moreover, they are licensed, safe, and secure for you to play at. Check out our reviews of the top 400 bonus casinos to get started today.


Other related articles you might like: