400% Deposit Bonus Casinos 2025

How Does the 400% Casino Bonus Work?

This offer gives players a 400% match on their deposit. If you were to deposit $100 at a participating online casino, you would get an additional $400 in bonus funds to use on eligible games like Big Bass Bonanza, Starburst, etc. This would increase your bankroll to $500.

You might be thinking that this offer sounds too good to be true. But it’s 100% legitimate. The only thing is, there are terms and conditions that you will have to follow to use this offer. Some of these terms include a strict wager limit and some games being off limits.

The main T&C of the 400% bonus casino promotion to know about is the wagering requirements. This is what makes the biggest impact on your winning potential. It refers to how many times you need to wager the promotional funds before you can collect the winnings.

If you were to receive $400 in extra funds for an offer with 30x wagering requirements, you would have to wager a total of $12,000 in winnings before you could cash out.

Reasons to Choose 400% Casino Bonuses

While there are plenty of exciting promos for your bankroll boost, the 400% match stands out as one of the best casino bonuses in the US. If you’re on the hunt for a bonus that’s more rewarding than a typical promotion, you might be wondering why you should choose the 400% bonus. These are some of the top reasons why we recommend it.

• More Bonus Funds: This casino promotion provides more money to play with than the average offer. Giving you more chances to win without having to go over your own personal budget.
• Play More Games: You can use the bonus funds on a variety of different games. This gives you the chance to try out more titles than you could with only a deposit.
• Test the Casino Without Commitment: It’s common to find a 400% bonus as part of a welcome offer. This allows you to make a small deposit and use the additional bonus funds to experience the casino’s gaming environment before making a larger deposit.
• Low-Risk Way to Play: While there is no guaranteed way to win casino games, playing with bonus money creates less financial risk. The more funds you have, the less of your own money you have to put at stake.
• Flexible Payments: Players of top casinos can choose from multiple payment options to claim the 400% deposit bonus. This includes e-wallets, mobile wallets, bank transfers, and even cryptocurrency. Many casinos also offer low minimum deposits to qualify for the deal.

How to Claim 400% Bonus in Online Casinos?

Claiming 400% offers is very straightforward. Here is a look at what you need to do to have the best bonus experience.

Claim Your 400% Bonus

Unlock huge rewards with ease.

Processing Time:

5 min.

Devices:

Phone, desktop, tablet

1

Choose an Offer

Slotozilla features an updated list of 400% bonuses from legitimate casinos.

2

Register at the Online Casino

Visit the official casino site and click sign-up to register.

3

Fill Out Your Details

Enter your personal information (name, address, phone number, etc.) and confirm you’re over the age of 18.

4

Confirm Your Account

You will receive an email or SMS with a verification link.

5

Login to Your New Account

You will now have full access to the online casino.

6

Make a Deposit

Enter the promo code or select the option to activate the deposit offer.

7

Play Games

The reward will automatically be credited to your account to use on eligible titles of table games, online slots, etc.

Types of 400% Casino Bonus Offers

Due to our casino reviews, there are several variations of 400% casino promotions at online gambling sites in the US. While the welcome reward is the most common, it’s still possible for existing members to find this promotion as well. Let’s look at the different ways you can come across this offer.

• Welcome Bonus: New players of US casinos can claim it after registering for an account. It may be part of a package that’s spread across multiple deposits.
• Reload Bonus: This offer is typically available on a set day of the week, encouraging players to top off their online casino wallet. It may be part of a package offer that includes free spins or other perks.
• Match Deposit Bonus: When you meet minimum deposit requirements, the casino will match what you deposit with 400% in bonus funds.
• No Deposit Bonus: This one technically isn’t a 400% bonus. But if you search for rewards at the right time, you could find a $400 no deposit bonus. That’s $400 free casino money that you can receive without having to add any of your funds.
• Highroller Bonus: If you make a higher deposit, you could be eligible for a more generous offer from participating online casinos.
• Loyalty Bonus: Casino loyalty programs are known for rewarding devoted players with exclusive perks. These can include cashback, bonus spins, and special promotions, while a 400% deposit match is usually given as a first deposit bonus for new players.

Important Terms and Conditions of 400% Casino Promotions

Before you claim this offer, it’s important that you understand the terms and conditions. These can be found under the promotion’s details or on the casino’s ‘Bonus T&Cs’ page. Below are some common terms and conditions (T&Cs) you should become familiar with.

• Wagering Requirements: This refers to the number of times you need to bet the bonus winnings before you can withdraw the money.
• Eligible Games: There are game restrictions, and only specific titles are approved to play with an online casino bonus. VIP and specialty games may be off-limits.
• Bonus Expiry: Offers have a time period during which they are active. If the promotion expires, you will forfeit the entire offer and any winnings you’ve received from it.
• Minimum Deposit: Casinos require players to deposit a specific amount to activate the offer. This could be an amount that’s higher or lower than the platform’s standard requirements.
• Bet Limits: This refers to the maximum amount you can wager per game using bonus funds. Casino sites set this rule to avoid huge payouts on promotional money.
• Maximum Bet Winnings: It’s common to have a maximum amount that players can win using extra funds. If you win more than this amount, you will retain the maximum, and the casino will keep the remainder.
• Payment Method Restrictions: Some online casinos do not provide offers for certain payment methods, such as Neosurf and Neteller. Always review the T&Cs to ensure your preferred payment method is eligible.
• Bonus per Household/IP: To prevent fraud, an offer may be limited to one per household or IP address. Geolocation is used and could restrict multiple players from claiming the offer if they reside at the same address.
• Withdrawal Restrictions: These are conditions that affect when and how much you can cash out when you win using the 400% bonus. Some offers may include a withdrawal limit, meaning you can only withdraw up to a certain amount until the wagering requirements are fully met.

How to Calculate Wagering Requirements?

Wagering requirements are one of the most important T&Cs that affect your winnings. These can impact the fairness of the offer, and obviously, higher wagering requirements make it more challenging to convert bonus funds into real cash. After all, it’s much easier to win using a promotion with 20x rollover requirements than 200x.

Calculating the wagering requirements is necessary because it fills you in on exactly how much you will need to wager before you can keep the money. However, to determine this, simply multiply the rollover requirements by the amount awarded.

If you receive $200 in extra funds and the T&Cs state 40x wagering requirements, here is what you need to do:

• $200 x 40 = $8,000

With this offer, you will need to wager $8,000 in winnings before you can cash out.

Alternative Percentage Bonuses

While this deal is extremely generous, it’s only one of many top casino offers. Many percentage-based bonus promotions allow you to receive funds to play casino games.

Responsible Gambling with 400% Casino Bonuses

Even though casino promotions have a lot of advantages, receiving a lot of funds at once could be risky if players don’t use them responsibly. This is especially true for players who quickly burn through their funds. To avoid problematic gambling while using a 400% bonus is important to keep track of your session time and how much you’re spending. By doing this, you can set yourself up to play with your real funds responsibly.

Luckily, the best online casinos will provide information and resources to help you learn more about responsible gambling. If you want more insight, organisations like GamCare, Gam-Anon, and the National Council on Problem Gambling provide education and support.