Best 400% Casino Bonus 2025
Casino promotions come in many different forms, rewarding players for hitting certain milestones on a platform.
Deposit bonuses are one type, adding extra money to your account when you top up your balance. These usually range between 50%-100% of your deposits, but occasionally offer much more.
In this article, we breakdown why a casino may offer a 400% deposit bonus and we've hand-picked the best online casinos that offer them.
Best Online Casinos with 400% Deposit Bonus 2025
400% deposit bonuses can be quite difficult to find, as casinos don’t offer them every day. Therefore, we looked through our list of trustworthy online casinos on your behalf and found 5 platforms offering these generous promotions.
Let's go through each one and explain how you can activate them on your accounts.
Winzter Casino
| Categories | Specifications |
|---|---|
| License | Anjouan Internet Gaming License |
| Game Library | +570 games |
| Payment Methods | Visa, Mastercard, Skrill, Bitcoin, Ethereum, AstroPay, etc. |
In our opinion, Winzter is the best 400% bonus casino, offering one of the most generous welcome packages on the market:
450% deposit bonus across your first 3 deposits
To claim this offer, you must make a minimum deposit of €50 and wager each bonus 30x.
Holding an Anjouan Gaming License, Winzter has a reputation for excellent customer support, making it a safe place to wager your bonus funds. Plus, this casino offers sportsbooks options as well, appealing to a wide array of players.
Raging Bull Slots
| Categories | Specifications |
|---|---|
| License | Curaçao Gaming Control Board |
| Game Library | +300 games |
| Payment Methods | Visa, Mastercard, American Express, Bitcoin, Ethereum, Litecoin, etc. |
Second on our list of 400% bonus casinos is Raging Bull Slots, offering VIP players a:
400% match bonus on Bitcoin deposits
You need to work a little to be eligible for this offer, as it’s only available to VIP Members above Level 4, but this casino is known for its outstanding loyalty rewards regardless of your level.
Raging Bull Slots also holds a Curaçao Gaming License, ensuring that its safety and protection standards are good enough to make this platform a viable option for crypto gamblers.
Crypto Loko
| Categories | Specifications |
|---|---|
| License | Curaçao Gaming Control Board |
| Game Library | +200 games |
| Payment Methods | Bitcoin, Ethereum, Litecoin, Ripple, etc. |
Up next we have a Curaçao crypto casino that offers more than a 400% casino bonus: Crypto Loko.
All VIP members qualify for a 192% deposit bonus or higher, which they can pair with the 248% El Gordo Reload Bonus to claim:
Over 440% in deposit bonuses
Overlapping bonus conditions often get confusing, so we recommend clearing these one by one. And as a fun fact, Crypto Loko’s 505% Welcome Bonus is actually too generous for this list, but does feature in our article on 500% deposit bonuses.
RealSpin Casino
| Categories | Specifications |
|---|---|
| License | Curaçao Gaming Control Board |
| Game Library | +5,000 games |
| Payment Methods | Visa, Mastercard, Revolut, Skrill, PaysafeCard, Bitcoin, etc. |
RealSpin also offers players a 400% deposit bonus, split across 2 promotions. First, new registrants can claim a lucrative Welcome Bonus:
350% deposit match +150 Free Spins across 4 deposits
Once you clear these, you can then claim a separate 50% Reload Bonus to hit the 400% mark. RealSpin is a very diverse platform with over 5,000 games in its library and many sportsbook options, giving you plenty of ways to use these bonus funds.
Lex Casino
| Categories | Specifications |
|---|---|
| License | Curaçao Gaming Control Board |
| Game Library | +7,000 games |
| Payment Methods | Visa, Mastercard, Revolut, Bitcoin, Tether, Litecoin, etc. |
Last of our 400% bonus casinos is the Curaçao-licensed Lex casino, which we think is the best option for sports betting. The first step is to claim the Sports Welcome Package:
300% deposit match across 3 deposits
From there, Hero and Legend VIP members qualify for regular Reload Bonuses and activity-based rewards, which will push you above the 400% mark in no time. Naturally, it takes time to reach for those VIP Levels, but Lex’s exceptional portfolio should keep you very entertained until you do.
What Is a 400% Deposit Bonus?
A 400% Deposit Bonus effectively multiplies your deposit by 5x. To use simple numbers, if you deposit €10, you will end up with €50 in your account. Many of these promotions also come with free spins, which increase the value of the bonus even more.
Why Claim a 400% Casino Bonus?
The best reason to claim a deposit like this is to have more funds available for betting. This lets you enjoy longer, and ideally more profitable sessions.
These bonus funds are also highly valuable for testing new strategies, as they let you make a mistake or two without risking your real cash.
Equally, you can take advantage of a 400% welcome bonus to judge a new platform and the services they offer at very little expense.
Bonus Terms & Conditions You Must Know
Almost all casino promotions have bonus-specific terms that you must follow to receive the advertised reward.
400% deposit bonuses are no different, and since they are more generous than many others you may find, they typically have stricter restrictions.
Wagering Requirements
Wagering or Playthrough Requirements refer to the number of times you need to bet your bonus funds before you can withdraw them.
If you receive €10 with a 30x wagering requirement, you need to bet €300 before you will be allowed to cashout.
If the bonus is non-sticky, then you will still be allowed to withdraw your Real Balance, and only your Bonus Balance will be subject to the wagering requirements. Some casinos also offer wager free promotions, though they are quite rare.
Minimum & Maximum Deposit Rules
With 400% Deposit Bonuses, casinos typically impose minimum deposit limits, meaning players can only claim the bonus if they deposit more than a certain amount. If this minimum is too high, it may be tough to meet wagering requirements.
Equally, casinos also use maximum deposit caps to limit the amount of bonus funding you receive, which can restrict the number of game rounds you can play.
Higher-value offers tend to have stricter restrictions, so it's important to choose a bonus with fair limits.
Eligible Games
One reason casinos offer such generous promotions is to drive traffic to chosen games. As a result, they often limit which titles contribute to wagering requirements to promote specific games in their libraries or boost underperforming ones.
Therefore, it is important to choose promotions that count bets on games you enjoy. Otherwise, you may end up ignoring your bonus funds or placing bets that do not take you closer to your goals.
Promo Codes Requirement
Some promotions are only available to players who input a specific bonus code. This gives casinos more control over who can access the promotion, and how.
Bonus codes are typically distributed through promotional emails and social media channels to reward players for supporting the casino on third-party platforms.
Some operators like RealSpin use these codes for many promotions, so they may be easier to access, while others don’t use them at all and instead implement other activation requirements.
Expiry Time / Validity Period
Most promotions make you complete wagering requirements within a time limit.
For example, you may be required to wager your 400% deposit bonus 30x in 30 days. If you have not completed the wagering requirements by the end of those 30 days, you will lose the bonus funds.
Some casinos also make sure that qualifying deposits are made within a specific timeframe. If you deposit after the validity period ends, you will not qualify for the 400% bonus.
How to Claim a 400% Deposit Bonus (Step-by-Step)
The process of making deposits is relatively standard nowadays, as license requirements and gambling regulations require casinos to follow similar safety protocols.
Naturally, each operator will still have slight procedural differences, so let’s explain the generalized process so you have an idea of what to expect at your casino of choice.
Sign Up / Create Account
Before you can claim any bonuses, you must register with a casino. The first step is to provide account-specific details:
Name and Surname
Email Address
Username
Password
From there, casinos will ask you for your personal information, including but not limited to:
Address
Date of Birth
Gender
After you have entered all the necessary information, the final step is accepting the casino’s Terms and Conditions. If you then click some variation of ‘Create Account’, your registration will be complete.
Enter the Bonus Code (If Required)
Once you have an account, you can open the casino’s Bonuses Page to see what it offers.
Some casinos have dedicated sections for inputting Promo Codes, allowing you to quickly find the bonus you want to claim. Casinos either display these codes with the bonus terms or distribute them through communication channels.
To claim a 400% deposit bonus, you will typically need to input the bonus code while you are depositing money.
Make the First Deposit
After creating an account, depositing money is very simple:
Find the 'Cashier' section
Choose a payment method
Set a deposit amount
Input your banking details and necessary bonus codes
If your information is valid and you’ve met the bonus conditions, your deposit will be accepted and the 400% bonus will be credited to your account.
If you’re struggling to find platforms that accept your preferred payment option, you can use our payment method reviews as a guide.
Play and Clear the Bonus
Now that you have a 400% deposit bonus to use, it’s time to earn some wins.
If your bonus has game limitations, make sure you choose an eligible title to play. This is especially important if you need to meet wagering requirements, as ineligible bets will not be counted.
If you meet all the requirements within the given time, you will clear the bonus, allowing you to withdraw any winnings or remaining funds as real cash.
How to Withdraw a 400% Bonus Successfully
Before you can make your first withdrawal, you will need to submit Know Your Customer (KYC) documents to verify your identity. The specifics vary across platforms, but most require:
ID Card or Passport
Proof of Address
Bank statement
Verifying these documents can take anywhere from 12 hours to 3 days depending on the operator, but once you’re verified you will be able to withdraw your funds into any bank account or e-Wallet the casino accepts.
Types of 400% Casino Bonuses
Deposit bonuses are offered with many casino promotions, as gifting players with bonus funds is a highly effective way of rewarding them.
Therefore, let's look at 4 different promotions that may offer a 400% deposit bonus.
Welcome Deposit Bonus
Welcome Bonuses are a staple of online gaming, used to thank players for registering with a casino. Most welcome packages offer some form of match bonus and free spins to encourage players to make their first deposit and begin betting.
It's rare to see Welcome Offers as high as 400%, but our top casino recommendation Winzter goes above and beyond with a 450% deposit match up to €3,000, which you can read all about at the top of this article.
Reload / Real Money Bonus
Reload Bonuses work very similarly to Welcome Packages, offering deposit bonuses and free spins.
The key difference is that Reload Bonuses are typically given out as part of recurring promotions such as Weekend Reloads, or to encourage absent players to return to the casino.
As a result, these bonuses tend to have lower values. To claim a 400% Reload Bonus, your best bet is to find a VIP Package with activity-based rewards.
Free Spins for a €400 Deposit
In the context of percentage bonuses, free spins can be hard to calculate. This is because the value of each spin is determined by the casino and the eligible games.
However, some generous promotions give you more value in free spins than your original deposit. It is rare that the value adds up to 400% of your deposit, but it can happen. If it does, these promotions will likely have strict wagering requirements to make you work for your rewards.
400% Sports Betting Bonus
Sportsbook bonuses have the same benefits as Welcome and Reload Offers, but targeted towards sports fans.
Once again, it's rare to see Sportsbook Bonuses offer as much as 400%, but some get close. From our recommendations, Lex casino offers new registrants a 300% deposit match, which can be paired with their VIP perks.
This generous offer encourages sports bettors to kickstart their sessions with a decent bankroll and climb the VIP tiers for greater rewards.
Casino Games for 400% Match Bonuses
Most 400% deposit bonuses restrict which games count towards wagering requirements, which can make finding eligible titles quite difficult.
Therefore, we’ve found 3 games that are eligible for at least one of the bonuses we recommended. Not all games will count for all bonuses, so check the terms of your chosen offer before placing any bets.
Big Bass Bonanza
Pragmatic Play’s Big Bass series has been entertaining players for years, with Big Bass Bonanza being one of their most popular titles, alongside Big Bass Splash and Big Bass Bonanza Megaways.
This high volatility slot has a wide betting range of €0.10 to €250 to appeal to both low-stakes bettors and high rollers. You can also trigger a Free Spins Round, giving you a chance to earn the 2,100x max multiplier.
If you’re a newer player, we recommend playing this game on Winzter to take advantage of its massive 450% Welcome Bonus.
Quest To The West
Quest To The West by Betsoft is a charming adaptation of the classic Chinese novel Journey to the West.
In this title, you must help the Money King Wild symbols travel westwards to trigger a Free Spins bonus round and a shot at up to 1,260x your bet.
Playing this game at RealSpin lets you use both its 350% Welcome deposit bonus and the accompanying free spins, so we highly recommend it to bonus hunters who enjoy historical slot games.
Le Bandit
Hacksaw Gaming’s Le Bandit is a quirky slot game that gives you a chance to earn great prizes. With cascading reels and 3 potential bonus games, you could earn up to 10,000x your bet in all game modes.
We think this amusing title is an excellent choice for players who enjoy finding bonus features. You can find Le Bandit at Winzter casino, giving you another way to use its generous welcome package.
Pros and Cons of 400% Deposit Bonuses
As with all things, there are both positive and negative aspects to claiming a 400% deposit bonus.
Before claiming an offer like this, first decide whether you are comfortable with its disadvantages. If you are, then go right ahead, but if not, we suggest checking out alternative casino bonuses.
| Pros | Cons |
|---|---|
| ✅ Significant boost to your balance | ❌ Not offered frequently |
| ✅ Split across multiple deposits | ❌ Strict wagering requirements |
| ✅ Bonus funds are less risky than real money | ❌ High minimum deposits |
| ✅ Often come with free spins | ❌ Maximum withdrawal limits |
| ❌ Eligible game restrictions |
Pros
The biggest advantage of claiming a 400% deposit bonus is, of course, the increase to your balance. Getting 5 times your original deposit is a great way to kickstart a gaming session. On top of that, wagering with bonus funds is also less risky than using your own cash.
Another advantage is that these bonuses are typically split across multiple deposits. This allows you to be smart with how and when you claim each part, so you never get overwhelmed by overlapping terms or deadlines.
Cons
Where there are benefits, there are drawbacks, and the biggest downside for 400% deposit bonuses is the terms and conditions. With the exception of some VIP Packages, all the offers we looked at had high wagering requirements, making it difficult to play enough to withdraw any winnings.
Additionally, these bonuses typically come with maximum withdrawal limits, so even if you meet the wagering requirements, you may not be able to cash out all your profits.
Expert Tips for Maximizing Your 400% Welcome Bonus
With a bonus as generous as a 400% deposit match, it can be easy to get caught up in the excitement and jump straight into a game round. However, we caution against rushing into any games before you confirm a few key details. Here’s what we recommend:
Check Minimum Deposit Requirements
Before claiming a bonus, it is important to make sure you deposit the correct amount. 400% deposit bonuses typically have larger minimum deposits, to make meeting playthrough requirements a decent challenge.
Winzter, for example, requires a minimum deposit of €50 to claim its Welcome Bonus, which is quite a big ask for new players. Not all casinos will have the same minimum requirements, so double check your chosen bonus’ terms and conditions before making any payments.
Don’t Combine with Other Offers
Something else to remember is that it's possible to claim multiple bonuses at once. The problem with this is that you then need to keep track of overlapping bonus conditions, wagering requirements, and validity deadlines.
As you can imagine, this gets incredibly confusing and can lead to you losing your bonus balance on multiple promotions. Therefore, we recommend claiming and clearing one offer at a time before moving on to a new one.
Read the Full Terms
This point goes hand-in-hand with the other tips we’ve given, but it is important to read all a casino’s terms and conditions before you make any deposits.
Knowing the bonus-specific terms is necessary to understand its requirements, but beyond that, a casino’s general terms should also affect your choice of platform.
If an operator has questionable or unfair conditions, or simply has terms you’d rather not interact with, you would be better off playing somewhere else.
Bonus Funds vs Real Cash
Some casinos separate the real money you deposit from your bonus funds. These non-sticky bonuses, as they’re called, allow you to bet your real money first, before touching your bonus.
As a result, you can withdraw any winnings earned using your real balance without losing the bonus. However, with non-sticky bonuses, real money bets don’t count towards wagering, which can disadvantage players claiming 400% deposit bonuses with large minimum deposits.
Use Bonus on Eligible Games
Our last tip is to read the eligible games list carefully. Bets on ineligible titles don’t contribute towards wagering requirements, while categories like Live Games may only consider a fraction of your bet.
To meet the conditions quickly, choose games with 100% Weighting, as this ensures that your entire bet is counted. Otherwise, you will be wasting portions, if not all of your bets on games that don’t help you complete playthrough requirements.
How to Choose the Best 400% Bonus Casino Site
When we evaluate online casinos, we make sure they meet a certain standard of safety, diversity, and fairness before we recommend them to any of our readers.
Let's walk you through our process, so you can trust that the casinos we endorse truly are as reputable and safe as we describe.
Licensing & Safety
The first step to ensuring the safety of an online casino is to verify that it is licensed by a reputable authority such as the Malta Gaming Authority (MGA) or the Curaçao Gaming Control Board (GCB).
Casinos display their license on their footer, and clicking it will show you its:
Governing Body
License Number
License Date
License Status
Additionally, casinos should also adopt player protection measures such as reality checks and self-exclusion options to limit the harmful and addictive effects of gambling.
Bonus Rules & Restrictions
Another important factor in our casino ranking was the fairness of bonus terms. If the platform had impossible wagering requirements or very low withdrawal limits, we axed them from our list.
Given the nature of 400% deposit bonuses and their stricter conditions, we did have to be slightly more lenient with this than we would like, but we still made sure that the wagering requirements of all the bonuses we highlighted were no higher than 45x.
Bonus Expiry & Limits
We also made sure all our recommended bonuses were possible to clear. This means having workable validity periods and fair limits.
If a bonus expires quickly, it will be difficult to complete the playthrough requirements, forcing you to lose any money earned with your bonus balance. Equally, if the withdrawal limit is too low, it won’t matter how much you won, as you will only be allowed to cash out a fraction of your winnings.
Game Contribution Percentages
Not all games eligible for a bonus contribute towards wagering the same way. Different categories have different weighting. Categories like slots typically contribute 100% of their bets, while others like Table Games only contribute around 10% on average.
The difference usually lies in the categories’ average Return to Player (RTP), which is the rate players earn money on their bets. Slots average a 96% RTP, which is significantly lower than the 99% table game average. As a result, slot games typically contribute more to wagering than other categories do.
Conclusion
400% deposit bonuses are a rare but generous way to reward casino players. You will most commonly find them with Welcome Packages, incentivizing new players to make their first deposits and wagers. Alternatively, you also find them as loyalty rewards for VIP players.
We think Winzter’s 450% Welcome Bonus is one of the best promotions available, with greater rewards and fairer terms than many other 400% deposit bonuses.