Competition between online casinos has led to an increase in bonus offers and other incentives. Typically, the higher the casino bonus the rare it is. One of the rare online casino incentives is the 400% bonus which multiplies your initial deposit by four. If you intend to try your luck on an online casino, you should consider starting with a 400% bonus when you sign up.



18+ | Terms & conditions apply. | Wild Tornado Casino.
- ✓ 100 Bonus Spins
- ✓ 100% Match Bonus
- ✓ Code: WILD100

18+ | Terms & conditions apply. | Abo Casino.
- ✓ 150 Bonus Spins
- ✓ Wolf Treasure
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18+ | Terms & conditions apply. | Winning Days Casino.
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- ✓ 100% up to $3000
- ✓ 150 Extra Spins

18+ | Terms & conditions apply. | LevelUp Casino.
- ✓ Book of Cats
- ✓ Code: CATS25
- ✓ $400 Casino Bonus

18+ | Terms & conditions apply. | Arlekin Casino.
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- ✓ Crypto Welcome Bonus

18+ | Terms & conditions apply. | King Billy Casino.
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- ✓ 100 Bonus Spins
- ✓ No maximum win

18+ | Terms & conditions apply.
- ✓ 60 Bonus Spins
- ✓ Slotman Million Slot
- ✓ Code: SM100

18+ | Terms & conditions apply.
- ✓ Caishen’s Arrival
- ✓ 150% up to $1200
- ✓ 200 Bonus Spins

18+ | Terms & conditions apply. | Leon Casino.
- ✓ $10 Cash Bonus
- ✓ 100% Match Bonus
- ✓ 10% Monday Cashback

18+ | Terms & conditions apply. | Divas Casino.
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- ✓ Code: WELCOME
- ✓ 30% Extra Cashback

18+ | Terms & conditions apply. | SkyCrown Casino.
- ✓ 100 Bonus Spins
- ✓ John Hunter and the Mayan Gods
- ✓ Code: SKY1

18+ | Terms & conditions apply.
- ✓ Hawaii Cocktails
- ✓ Daily Cashback
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18+ | Terms & conditions apply.
- ✓ Up to $250
- ✓ 100 Bonus Spins
- ✓ Wolf Gold

18+ | Terms & conditions apply. | Universal Slots Casino.
- ✓ London Hunter
- ✓ Code: UNIVERSALFREE
- ✓ $150 Casino Bonus

18+ | Terms & conditions apply.
- ✓ Code: POTION40
- ✓ 250% Deposit Bonus
- ✓ 100 Bonus Spins

18+ | Terms & conditions apply. | 4Kasino Casino.
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- ✓ Daily Cashback
- ✓ 500% Crypto bonus

18+ | Terms & conditions apply. | Golden Crown Casino.
- ✓ 100 Bonus Spins
- ✓ 100% Match Bonus
- ✓ Code: GC100

18+ | Terms & conditions apply. | Casoo Casino.
- ✓ 100 Bonus Spins
- ✓ Magic Stars 3
- ✓ 100% Match Bonus

18+ | Terms & conditions apply.
- ✓ 25 Bonus Spins
- ✓ 90K Yeti Gigablox
- ✓ 100% Match Bonus

18+ | Terms & conditions apply.
- ✓ Up to $200
- ✓ Code: Mond130
- ✓ Loyalty Cashback

18+ | Terms & conditions apply. | Vegas Crest Casino.
- ✓ 50 Free Spins on signup
- ✓ 50 Bonus Spins
- ✓ Dragon & Phoenix

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- ✓ On Registration
- ✓ Wolf Treasure
- ✓ $1000 Casino Bonus

18+ | Terms & conditions apply. | National Casino.
- ✓ 100 Bonus Spins
- ✓ Avalon: The Lost Kingdom
- ✓ 100% Bonus

18+ | Terms & conditions apply. | Mr Sloty Casino.
- ✓ 125 Bonus Spins
- ✓ Wild Wild West
- ✓ Code: WILD125

18+ | Terms & conditions apply. | 24Casino.Bet Casino.
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- ✓ Jumanji
- ✓ Code: WELCOME130

18+ | Terms & conditions apply. | Slotozen Casino.
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- ✓ BGaming Games
- ✓ 100% Match Bonus

18+ | Terms & conditions apply. | Tsars Casino.
- ✓ 100 Bonus Spins
- ✓ 30% Reload Bonus
- ✓ 100% Match Bonus

18+ | Terms & conditions apply.
- ✓ Cherry Fiesta
- ✓ Fantasy Park
- ✓ $190 Casino Bonus

18+ | Terms & conditions apply. | 7Bit Casino.
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- ✓ Wolf Treasure
- ✓ 100% Bonus

18+ | Terms & conditions apply. | Megaslot Casino.
- ✓ 25 Bonus Spins
- ✓ Elvis Frog in Vegas
- ✓ Code: WOLF1

18+ | Terms & conditions apply.
- ✓ 100 Bonus Spins
- ✓ John Hunter and the Book of Tut
- ✓ 20% Weekly Cashback

18+ | Terms & conditions apply. | Tangiers Casino.
- ✓ 40 No Deposit Spins
- ✓ Caishen's Arrival
- ✓ 30 Extra Spins

18+ | Terms & conditions apply. | Westpoint Casino.
- ✓ 100% Deposit Match
- ✓ Promo Code: 100864
- ✓ 10% Weekly Cashback

18+ | Terms & conditions apply. | Rich Palms Casino.
- ✓ $40 Free Chip on Sign Up
- ✓ Code: SLOTSROCK40
- ✓ 100% Cashback

18+ | Terms & conditions apply. | OZ Las Vegas Casino.
- ✓ On Registration
- ✓ Code: JOINOZ30
- ✓ 150% Deposit Bonus

18+ | Terms & conditions apply. | Jet10 Casino.
- ✓ Non Sticky Bonus
- ✓ 100% Bonus
- ✓ 15% Cashback Offer

18+ | Terms & conditions apply. | Cobra Casino.
- ✓ Chilli Pop
- ✓ Code: COBRA100
- ✓ $750 Casino Bonus

18+ | Terms & conditions apply.
- ✓ 75 Bonus Spins
- ✓ Bushido Ways xNudge
- ✓ 150% Crypto Bonus

18+ | Terms & conditions apply. | Lucky Tiger Casino.
- ✓ $40 Free Chip on SignUp
- ✓ Code: SPINBANDIT40
- ✓ 100% Cashback

18+ | Terms & conditions apply. | Lucky31 Casino.
- ✓ No winning cap
- ✓ $15 Minimum Deposit
- ✓ 100% Match Bonus

18+ | Terms & conditions apply. | GreenSpin Casino.
- ✓ Prince of Persia the Gems of Persepolis
- ✓ Wager-Free Offer
- ✓ Activate via chat: 15ZAMSINO

18+ | Terms & conditions apply.
- ✓ 200 Bonus Spins
- ✓ Cashback Offers
- ✓ 100% Bonus

18+ | Terms & conditions apply.
- ✓ 100% Match Bonus
- ✓ 100 Bonus Spins
- ✓ Lucky Lady Moon

18+ | Terms & conditions apply. | Lucky Draw Casino.
- ✓ 30 No Deposit Spins
- ✓ Outback Heat
- ✓ 30 Extra Spins

18+ | Terms & conditions apply. | Ocean Breeze Casino.
- ✓ 50 Bonus Spins
- ✓ Narcos
- ✓ Code: WELCOME1

18+ | Terms & conditions apply. | Casitsu Casino.
- ✓ 50 Bonus Spins
- ✓ Avalon: The Lost Kingdom
- ✓ Code: SHODAN

18+ | Terms & conditions apply. | MyStake.Bet Casino.
- ✓ Up to $300
- ✓ 170% Crypto Bonus
- ✓ 15% Weekly Cashback

18+ | Terms & conditions apply. | BitStarz Casino.
- ✓ Wolf Treasure
- ✓ 100% up to $2000
- ✓ 180 Bonus Spins

18+ | Terms & conditions apply. | Slotum Casino.
- ✓ 100 Bonus Spins
- ✓ Instant Withdrawal
- ✓ 100% Bonus

18+ | Terms & conditions apply. | Lilibet Casino.
- ✓ Non Sticky Bonus
- ✓ 100% Bonus
- ✓ up to $150 Cashback

18+ | Terms & conditions apply. | TwoUp Casino.
- ✓ On Registration
- ✓ Code: 25CHESS
- ✓ 250% Deposit Bonus

18+ | Terms & conditions apply. | Jet Casino.
- ✓ 50 Bonus Spins
- ✓ 10% Monday Cashback
- ✓ 150% Match Bonus

18+ | Terms & conditions apply. | BC.Game Casino.
- ✓ Up to 1BTC
- ✓ Pure Crypto Casino
- ✓ Multiple Bonus Offers

18+ | Terms & conditions apply. | HeavyChips Casino.
- ✓ Cashback Offers
- ✓ 20 Reload Spins
- ✓ 400% Bonus

18+ | Terms & conditions apply. | Wilderino Casino.
- ✓ Up to $40
- ✓ $10 Min. Deposit
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply. | GetSlots Casino.
- ✓ 155 free spins
- ✓ Sword and The Grail
- ✓ Minimum deposit $20

18+ | Terms & conditions apply. | PlayAmo Casino.
- ✓ 100 Bonus Spins
- ✓ Elvis Frog in Vegas
- ✓ Code: FIRSTDEP

18+ | Terms & conditions apply. | Casino4U Casino.
- ✓ New casino
- ✓ 100 free spins
- ✓ Minimum deposit $20

18+ | Terms & conditions apply. | SpinPug Casino.
- ✓ Up to $100
- ✓ $10 Minimum Deposit
- ✓ 20% Cashback Offers

18+ | Terms & conditions apply.
- ✓ Up to $40
- ✓ $10 Min. Deposit
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply. | Casobet Casino.
- ✓ 120% Match Bonus
- ✓ $10 Minimum Deposit
- ✓ 10% Live Casino Cashback

18+ | Terms & conditions apply. | Parimatch Casino.
- ✓ 5% Cashback
- ✓ 150% Bonus
- ✓ Code: PLAY150

18+ | Terms & conditions apply. | 7Reels Casino.
- ✓ 30 Free Spins
- ✓ On Registration
- ✓ 400% Crypto Bonus

18+ | Terms & conditions apply. | Aussieplay Casino.
- ✓ 50 No Deposit Spins
- ✓ Asgard Deluxe
- ✓ Code: VIKING50

18+ | Terms & conditions apply.
- ✓ Up to $150
- ✓ Wager- Free Spins
- ✓ Daily Cashback

18+ | Terms & conditions apply.
- ✓ 75 Bonus Spins
- ✓ Fruit Shop
- ✓ 10% Weekly Cashback

18+ | Terms & conditions apply.
- ✓ 40 No Deposit Spins
- ✓ Outback Heat
- ✓ 30 Extra Spins

18+ | Terms & conditions apply.
- ✓ 30 No Deposit Spins
- ✓ Moriarty Megaways
- ✓ Code: 30FREE

18+ | Terms & conditions apply.
- ✓ 50 free spins
- ✓ Book of Dead
- ✓ 125% bonus

18+ | Terms & conditions apply.
- ✓ 20 Bonus Spins
- ✓ Viking Gods: Thor and Loki
- ✓ Code: WELCOME200

18+ | Terms & conditions apply.
- ✓ 50 Bonus Spins
- ✓ $10 Minimum Deposit
- ✓ up to 20% Weekly Cashback

18+ | Terms & conditions apply.
- ✓ 100 Bonus Spins
- ✓ 100% Match Bonus
- ✓ Weekly Bonuses

18+ | Terms & conditions apply.
- ✓ Bitcoin
- ✓ Code: WELCOME200
- ✓ 200% bonus

18+ | Terms & conditions apply.
- ✓ $2000 Tournaments
- ✓ 20% Cashback Offers
- ✓ $10 Min. Deposit

18+ | Terms & conditions apply.
- ✓ Up to $500
- ✓ 200 Bonus Spins
- ✓ On First Deposit

18+ | Terms & conditions apply.
- ✓ 15 Cash Free Spins weekly
- ✓ Deposit in Bitcoin
- ✓ Minimum deposit $10

18+ | Terms & conditions apply.
- ✓ Minimum deposit AU$ 20
- ✓ No withdrawal CAP
- ✓ Crypto Pay N Play

18+ | Terms & conditions apply.
- ✓ Minimum deposit AU$10
- ✓ Wager 35x
- ✓ 200% bonus

18+ | Terms & conditions apply.
- ✓ On Registration
- ✓ 200% Casino Bonus
- ✓ 400% Crypto Bonus

18+ | Terms & conditions apply.
- ✓ 45 Free Spins
- ✓ 300% Bonus
- ✓ No Deposit

18+ | Terms & conditions apply.
- ✓ 25 No Deposit Spins
- ✓ Cash Bandits 2
- ✓ Code: 25BANDITS

18+ | Terms & conditions apply.
- ✓ 10 free spins
- ✓ No deposit
- ✓ Minimum Deposit A$30

18+ | Terms & conditions apply.
- ✓ Multiple Bonuses
- ✓ 20% Cashback Offer
- ✓ $10 Min. Deposit

18+ | Terms & conditions apply.
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- ✓ 20% Cashback Offer
- ✓ $10 Min. Deposit

18+ | Terms & conditions apply.
- ✓ 50 free spins
- ✓ Starburst
- ✓ 100% bonus

18+ | Terms & conditions apply.
- ✓ On Registration
- ✓ Code: 40ATLANTIS
- ✓ 280% Deposit Bonus

18+ | Terms & conditions apply.
- ✓ 25 Free Spins
- ✓ On Registration
- ✓ 100% 1st Dep. Cashback

18+ | Terms & conditions apply.
- ✓ Up to $10.000 Bonus
- ✓ 200% Bonus
- ✓ New Casino

18+ | Terms & conditions apply.
- ✓ On Registration
- ✓ Book of Darkness
- ✓ 200% Casino Bonus

18+ | Terms & conditions apply.
- ✓ Code: INVASION300
- ✓ No Max Cashout
- ✓ 100% 1st Dep Cashback

18+ | Terms & conditions apply.
- ✓ On Registration
- ✓ Code: 30WISH
- ✓ 250% Deposit Bonus

18+ | Terms & conditions apply.
- ✓ On Registration
- ✓ Code: FORTUNE275
- ✓ 275% bonus

18+ | Terms & conditions apply.
- ✓ Invaders!
- ✓ Live casino
- ✓ 200% bonus

18+ | Terms & conditions apply.
- ✓ 25 free spins
- ✓ Code: HAWK25
- ✓ 231% bonus

18+ | Terms & conditions apply.
- ✓ 40 free spins
- ✓ Code: KREEG205
- ✓ 205% bonus

18+ | Terms & conditions apply.
- ✓ 50 free spins
- ✓ Code: CORAL210
- ✓ 210% bonus

18+ | Terms & conditions apply.
- ✓ 59 free spins
- ✓ Code: CHARM59
- ✓ 220% bonus

18+ | Terms & conditions apply.
- ✓ 35 free spins
- ✓ Code: GUITAR219
- ✓ 219% bonus

18+ | Terms & conditions apply.
- ✓ $10 Minimum Deposit
- ✓ 20% Cashback Offer
- ✓ $2000 Weekly Tournament

18+ | Terms & conditions apply.
- ✓ 200% Bonus
- ✓ 100 Bonus Spins
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply.
- ✓ Up to $100
- ✓ $10 Minimum Deposit
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply.
- ✓ 20 free spins
- ✓ On sign up
- ✓ 100% bonus

18+ | Terms & conditions apply.
- ✓ up to $100
- ✓ $10 Minimum Deposit
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply.
- ✓ 150 Bonus Spins
- ✓ Book of Dead
- ✓ 100% Bonus

18+ | Terms & conditions apply.
- ✓ 100% Match Bonus
- ✓ $10 Min Deposit
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply.
- ✓ Multiple Bonuses
- ✓ 20% Cashback Offer
- ✓ $10 Min. Deposit

18+ | Terms & conditions apply.
- ✓ 100% Match Bonus
- ✓ $10 Min. Dep
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply.
- ✓ 100% Match Bonus
- ✓ $10 Min. Dep
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply.
- ✓ 100% Match Bonus
- ✓ $10 Min. Dep
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply.
- ✓ 100% Match Bonus
- ✓ $10 Min. Dep
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply.
- ✓ 50 free spins
- ✓ Code: MONARCH50
- ✓ 266% bonus

18+ | Terms & conditions apply.
- ✓ Multiple Bonuses
- ✓ 20% Cashback Offer
- ✓ $10 Min. Deposit

18+ | Terms & conditions apply.
- ✓ 100% Match Bonus
- ✓ 20% Cashback Offer
- ✓ $10 Min. Deposit

18+ | Terms & conditions apply.
- ✓ $10 Minimum Deposit
- ✓ 100% Match Bonus
- ✓ 20% Cashback Offer

18+ | Terms & conditions apply.
- ✓ $25 free casino
- ✓ Code: SPINME25
- ✓ 300% bonus

18+ | Terms & conditions apply.
- ✓ Shamrock 'n' Roll
- ✓ Mayan Marvels
- ✓ Candy Swap

18+ | Terms & conditions apply.
- ✓ 10 free spins
- ✓ Book of Dead
- ✓ 100% bonus

18+ | Terms & conditions apply.
- ✓ $150 Casino Bonus
- ✓ 100 Bonus Spins
- ✓ 100% bonus
The best 400% online casino bonuses in one place
You have come to the right place if you are looking for the best casino with a 400% bonus. The objective is to give players the best possible offers from safe and trustworthy casinos. Below you will the best online casinos with a 400% bonus when you make your first deposit. Our team has done all the hard work of testing, going through terms, and reading through player reviews.

Recommended online casinos
Apart from the list provided above, there are other exceptional online casinos with a standard bonus offer. Regardless, the player experience for these platforms is anything but average. Understanding that their platforms have some unique features, these casinos don’t see the need to include huge bonuses. Here is a list of the top recommended casinos:
Safety first
For a casino to be considered on the list of the best 400% bonus offer, it should be highly trustworthy and acclaimed by players. It is our policy to protect the safety of our visitors as well as protect our brand. Our readers need to have a pleasant experience vising one or more of our recommended sites.
A rogue casino can easily be identified by the terms they use on bonuses. Fair casinos have attainable wagering required which are within a reasonable time frame. Other bad casinos are known to payout huge jackpots in increments and this could take years Always be on the lookout and choose wisely.
Casino bonuses in general
Everyone online casino player would love the chance to claim a bonus which can be in form of funds, free spins, or both. Bonuses give players a chance to try their luck on online pokies without necessarily spending their actual account balance. This is merit especially if you are new to online casino gaming. Most of the 400% bonus offers are only available on this platform through the links.
Why Zamsino.com?
To build trust with our online casino players, we only list licensed and accredited casinos. As stated above, only casinos that have gone through a strict testing process get on the list. Unlike most of our competitors, we take full responsibility for all online casino operators we promote.
400% casino bonus — Downsides?
One downside of claiming a huge incentive like the 400% casino bonus is it results in more wagering. However, more wagering can be of great benefit depending on what kind of player you are and the situation. Go for bigger bets which have the possibility of yielding huge rewards.
What to keep in mind when claiming a large casino bonus
Most huge bonuses have wagering requirements that have to be fulfilled before you can cash out your winnings. Keep in mind that these conditions vary from one casino to the other. First, check if the bonus has an expiration date. Bonuses can be cancelled if not used within a specified period. Other things to consider include games you can play with the bonus and minimum required deposit.
Best 400% casino bonus sites
All online casinos listed on our platform are top quality with an excellent gaming experience. With that said, some casinos stand out from the list of best 400% bonus casinos. Furthermore, there are personal favourites for different online casino players. Here are our top picks.
FAQ
Due to the huge number of online casinos in the market, it might be difficult to choose the best casino with this bonus. However, our platform provides a list of the best online casinos for you to enjoy the 400% casino bonus.
To activate the 400% bonus, you have to deposit in your account. The amount required to activate the bonus varies from one online casino to the other. Additional wagering requirements can also be applied.
Again, the inclusion of free spins depends on the online casino. We suggest that you go through the terms and conditions of each bonus for you to understand how it works. More often, these bonuses are accompanied by free spins.
Related articles
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- Find yourself a new online casino to play with our list!
- Check out our article and find some 100 free spins no deposit bonuses!
Erik King
Editor in Chief - Zamsino.com
I always loved gambling and probably always will, spending my time reviewing gambling sites to help people save time.
Last updated 29/04/22 by Erik King