Best 400% Deposit Bonuses for US Players 2025

Why Online Casinos Offer 400% Welcome Bonuses

A 400% casino bonus is one of the most generous rewards you can find in online gambling. Our experts have seen an increase in 400% bonus online casinos in the US. A new casino brand may use such a generous offer to attract new users and stand out from the competition.

You won’t usually find a casino 400% bonus for existing players. A casino will usually focus this kind of massive bonus on new players to attract as many potential users to its site.

What is a 400 deposit bonus?

A 400 casino bonus is a welcome offer that rewards you when you make your first deposit. Your casino will match that deposit by 400%.

For example, if you put $100 into your casino account, you’ll receive a $400 bonus and $500 in total. This type of bumper reward is one of the easiest ways to give your bankroll a major boost.

How to Claim a 400% Casino Welcome Bonus

Our recommended online casinos for US players make it easy to claim a 400% casino bonus. Most sites have a seamless sign-up process, so follow the steps below to get your reward today:

1. Register with the casino – choose one of the casinos we list, click the link provided and sign up by providing your details, including full name, email address, phone number, and home address.
2. Complete KYC checks – reputable online casinos require you to verify your account before withdrawing winnings. Provide ID and other necessary documentation.
3. Use a bonus code (if required): Some casino sites require players to use a promo code to access bonuses. If applicable, you can use the promo code when making a deposit or registering.
4. Deposit funds – click the “Deposit” button and choose a payment method. Enter the deposit amount and provide details for that payment service. Confirm the transaction.
5. Start playing games – you should now see bonus funds in your balance. If not, manually opt-in via the promotions section of your account. Then head to the casino lobby to play games!

Why Join a 400% Bonus Casino?

A 400% casino bonus is definitely eye-catching, but you’ll need to weigh up if this type of promotion suits your playing style. Below are the main reasons why a 400% bonus casino is worth considering.

More value for your deposit

You are multiplying your deposit by four, significantly increasing the amount of money you have to play games with.

Increased winning potential

With more money to use, you will have more chances to win the games you are playing. Of course, luck still applies, but more money means more access, which means more chance of success.

Extended gameplay

Your boosted bankroll from the 400 deposit bonus will go a long way and allow you to play more games for a longer period of time.

Combo bonus packages

A bigger starting bankroll may help you claim other promotions, such as buy-ins to tournaments or claiming free spins. Read the bonus T&Cs to see if your bonus can combine without other promos.

Risk-free casino trials

You can use your bigger bonus funds to give a new casino you are trying a really in-depth test. You will be able to assess the casino without risking as much of your bankroll.

400% Welcome Bonus Terms and Conditions

Like any casino promo, your 400 casino bonus will come with terms and conditions. Below are the main T&Cs that can make or break a 400 bonus casino offer.

• Wagering requirements – the most important term is wagering requirements, which dictate what you need to bet before cashing your bonus winnings. A common requirement is from 20x to 50x.
• Maximum withdrawal limits – there is usually a cap on how much you can win with bonus money, such as $500.
• Eligible games – using your bonus money or meeting the wagering requirement may be limited to specific games.
• Bonus expiry – most 400 deposit bonus casinos have an expiry date on bonuses. Also, you will only have a set amount of time to complete the wagering requirements.
• Payment restrictions – some casino sites do not allow deposits from e-wallets like Skrill and Neteller for bonuses. Crypto deposits are more likely to unlock the full bonus. Always check the terms for eligible payment methods.

Best Games to Play With a 400% Welcome Bonus

The 400 casino bonus sites in our recommendations all have flexible game portfolios. You can experience all types of casino games, but some options may be better than others for your 400% bonus:

High RTP online slots

High RTP slots are online slot games with a Return to Player (RTP) percentage of 97% or more. This means these slots essentially have more chance of paying more of your investment back on average over time, therefore potentially extending your gameplay.

Progressive jackpot slots

Alternatively, you can flip the dial and try games that carry bigger risks but bigger rewards. Progressive jackpots can pay millions of dollars from a prize pool that grows every time someone places a bet on the game.

Live dealer casino games

Live dealer games immerse you in an authentic casino experience by streaming the game in real time with pro human dealers. While live dealer games have higher betting limits, your online casino 400 welcome bonus is more than enough to enjoy plenty of games.

Classic table games

Games such as blackjack, baccarat, and roulette are also available as RNG games, which allow you to play virtually against the computer. Using random number generators (RNGs), these games have high RTPs, and your boosted bankroll would go a long way.

Video poker variants

Video poker combines elements of slot machines with poker gameplay. You play on your own, and winning hands pay out. Video poker games can have RTPs over 100%, so you can draw out wagers from your 400% bonus for longer.

Crash and instant win games

400% casino bonus sites also offer instant win games like Keno, bingo, and scratch cards. Then there are crash games, where players predict when a moving element will “Crash” before or after a specific point. Always check the 400 deposit bonus rules to see if these games contribute towards the wagering requirement.

Are 400% Deposit Bonuses Worth It?

There is no doubt that 400% casino bonus offers are exciting, but you may be wondering if they are the perfect casino promotion for you. We recommend always reading the T&Cs before claiming a bonus. To help you decide if a 400% deposit bonus works for you, consider the following questions.

• What are the wagering requirements? Always check what the wagering requirement is. If it is extremely high, it may make it hard to cash out your bonus winnings.
• Which games contribute to them? Slots usually contribute 100% to the wagering requirement, while table and live dealer games can contribute between 0% and 25%.
• Is there a cap on how much I can withdraw from this bonus? Understand how much you can potentially win and withdraw before you commit bankroll to wagering.
• What’s the minimum deposit needed to claim this offer? A minimum deposit of $10 is average, but some casinos may require $20 or more.
• How long will I have to use the bonus before it expires? If you have a brief time to meet the wagering requirement, it may be hard to be able to withdraw winnings.
• Does the bonus come with extra rewards like free spins or cashback? Additional perks may make it easier to decide to claim an offer.
• Can I use the bonus on live dealer or table games? Some bonuses may be limited to specific games or a single game category, such as slots.
• Is this bonus suitable for my playing preferences and budget? With a 400% bonus, there will be a lot of wagering involved to cash out, so consider your ability to reach that goal.

Types of 400% Casino Welcome Bonus

A 400% casino bonus can come in a range of promotion formats. This flexibility means you can pick a bonus that suits your play style and preferences.

Standard 400% match bonus

The most common type of casino 400 bonus is a deposit match. This is where you make a deposit, and the casino matches it by 400%. For example, if you deposit $100, you’ll receive a $400 bonus, effectively giving you $500 to play with.

400% welcome bonus package

More often than not, a 400% bonus will be part of a welcome bonus. These promotions are usually the most generous, but they are only available for new users. Many casinos create welcome bundles that also add free spins to the deposit match offer.

400% high roller bonus

A high roller bonus is an offer that the casino provides to players who are willing to make a larger first deposit for a bigger reward. A standard bonus may require a minimum deposit of $10-$20, whereas a high roller may go up to $50 or more.

400% crypto deposit bonus

Crypto casinos are known for their massive bonus rewards. On these unique casinos, you will need to make your qualifying deposit using a cryptocurrency such as Bitcoin, Litecoin, Ethereum, Tether, or Dogecoin.

400% reload bonus

A reload bonus is a promo for existing players. It is usually a deposit match, such as 50% when you deposit $10 or more. Most 400 casino bonus offers are welcome bonuses, but some casinos may have similar reload promos this generous.

400% free spins + deposit bonus

As mentioned, it is common for casinos to add free spins to a deposit match 400% bonus. When this happens, pay attention to the T&Cs because the free spins may have a separate wagering requirement from the deposit bonus.

How to Maximize a 400% Casino Welcome Bonus

Our experts have put together the following tips to enhance your experience when you claim a 400% casino bonus.

• Read the terms carefully – never skip this step. Take the time to understand the wagering requirements and other T&Cs.
• Select games wisely – choose games that suit the bonus and your play style. High RTP slots give you more chances and work for beginners and casual players.
• Use a smaller deposit – consider making a smaller deposit if you are testing a casino. With a 400% deposit match bonus, you can claim the big reward and explore the casino without much financial risk.
• Explore games – use your bonus to enjoy game titles you have never tried before. You may find a hidden gem.
• Watch the rules – breaking maximum bet limits or trying to withdraw early could void your bonus. Read the T&Cs to see this information.