Are you looking for a 400% casino bonus to claim from Ireland?
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.
These are the best 400% Irish casino bonuses available right now!



18+ | Terms & conditions apply. | Rocket Casino.
- โ 50 Bonus Spins
- โ Aztec Magic Deluxe
- โ On your first deposit

18+ | Terms & conditions apply.
- โ Fruit Machine x25
- โ Code: 20FSS
- โ 100% up to โฌ500

18+ | Terms & conditions apply. | Slotbox Casino.
- โ Book of Dead
- โ 100% up to โฌ100
- โ 100 Bonus Spins

18+ | Terms & conditions apply. | Vulkan Vegas Casino.
- โ Book of Dead
- โ 120% up to โฌ300
- โ 70 Bonus Spins

18+ | Terms & conditions apply. | Trickz Casino.
- โ 110% Bonus
- โ 100 Bonus Spins
- โ Tome of Madness

18+ | Terms & conditions apply.
- โ 100% up to โฌ500
- โ Fruit Zen
- โ 50 Bonus Spins

18+ | Terms & conditions apply.
- โ Fruit Machine x25
- โ Code: 20FSS
- โ 200% up to โฌ1000

18+ | Terms & conditions apply.
- โ Up to โฌ50
- โ Wagering x25
- โ Up to 200 Bonus Spins

18+ | Terms & conditions apply.
- โ 100 Bonus Spins
- โ Aztec Magic Deluxe
- โ Mobile App available

18+ | Terms & conditions apply.
- โ Aztec Magic Megaways
- โ Wild Cash
- โ โฌ500 Bonus & 100 Spins

18+ | Terms & conditions apply. | BCasino.
- โ 100% up to โฌ500
- โ 100 Bonus Spins
- โ Code: bca7z

18+ | Terms & conditions apply.
- โ Up to โฌ1,250
- โ 150% Sports Bonus
- โ Live Casino

18+ | Terms & conditions apply. | 1Bet Casino.
- โ Code: 1BWEL500
- โ Sportsbook
- โ Mobile App available

18+ | Terms & conditions apply.
- โ 100% Bonus
- โ โฌ1 Minimum Deposit
- โ Sportsbook

18+ | Terms & conditions apply. | Verde Casino.
- โ Book of Sirens
- โ Wagering x3
- โ 120% up to โฌ300

18+ | Terms & conditions apply.
- โ 100% up to โฌ100
- โ Wagering 25x
- โ โฌ10 Min Deposit

18+ | Terms & conditions apply. | ExciteWin Casino.
- โ 100% Bonus
- โ 200 Bonus Spins
- โ Weekly Cashback 15%

18+ | Terms & conditions apply. | Doggo Casino.
- โ Book of Dead
- โ 100% up to โฌ1000
- โ 200 Bonus Spins

18+ | Terms & conditions apply. | Mr Fortune Casino.
- โ โฌ700 Casino Bonus
- โ 50 Bonus Spins
- โ Fruit Zen

18+ | Terms & conditions apply.
- โ 100% Bonus
- โ 120 Bonus Spins
- โ Elvis Frog in Vegas

18+ | Terms & conditions apply. | Wolfy Casino.
- โ Tower of Fortuna
- โ Koodi: ZAM20
- โ Wager-free

18+ | Terms & conditions apply. | Gxmble Casino.
- โ Up to โฌ500
- โ On first deposit
- โ Wagering Requirement: 5x

18+ | Terms & conditions apply. | Arcanebet Casino.
- โ Book of Dead
- โ โฌ200 Casino Bonus
- โ 50 Extra Spins

18+ | Terms & conditions apply. | Winstler Casino.
- โ Up to โฌ500
- โ On first deposit
- โ Sports Betting

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

18+ | Terms & conditions apply. | MegaRush Casino.
- โ 100 Free Spins
- โ Book of Dead
- โ Min. deposit โฌ10

18+ | Terms & conditions apply. | Club Riches Casino.
- โ The Dog House
- โ 100% up to โฌ1000
- โ 100 Bonus Spins

18+ | Terms & conditions apply. | Winnerz Casino.
- โ 100 Bonus Spins
- โ Book of Dead
- โ Wager x15

18+ | Terms & conditions apply. | Seven Casino.
- โ 1st Bonus
- โ Wagering Requirement: 10x
- โ Sports Betting

18+ | Terms & conditions apply.
- โ Dig Dig Digger
- โ Code: ZAMSINO
- โ โฌ100 Bonus & 100 Spins

18+ | Terms & conditions apply.
- โ Up to โฌ125
- โ 25 Bonus Spins
- โ Choose your package!

18+ | Terms & conditions apply. | Maneki Casino.
- โ Big Bass Keeping it Reel
- โ 100% up to โฌ111
- โ 33 Extra Spins

18+ | Terms & conditions apply.
- โ 100 Bonus Spins
- โ Elvis Frog in Vegas
- โ Up to 1k Cashback

18+ | Terms & conditions apply.
- โ 155% Crypto Bonus
- โ 10% loyalty bonus
- โ Sports betting

18+ | Terms & conditions apply. | RANT Casino.
- โ 100% Match Bonus
- โ On First Deposit
- โ Weekly Cashback

18+ | Terms & conditions apply. | Stelario Casino.
- โ Sugar Rush
- โ Code: ZAMSINO
- โ 125% up to โฌ300

18+ | Terms & conditions apply. | Ice Casino.
- โ Book of Fallen
- โ 120% up to โฌ300
- โ 120 Extra Spins

18+ | Terms & conditions apply. | Icebet Casino.
- โ Bastet and Cats
- โ Code: ZAMSINO
- โ 125% up to โฌ300

18+ | Terms & conditions apply.
- โ 70 Spins: Lady Wolf Moon
- โ Code: KICKSTART
- โ No limited Withdrawals!

18+ | Terms & conditions apply.
- โ Majestic King
- โ Code: ZAMSINO20
- โ 200% up to โฌ500

18+ | Terms & conditions apply.
- โ $300 Casino
- โ On First Deposit
- โ Weekly Cashback

18+ | Terms & conditions apply. | Spinsbro Casino.
- โ Across the universe
- โ 115% up to โฌ420
- โ 100 Spins: Sugar Rush

18+ | Terms & conditions apply. | CosmicSlot Casino.
- โ Across the Universe
- โ 100% up to โฌ500
- โ 100 Bonus Spins

18+ | Terms & conditions apply. | CasiGo Casino.
- โ โฌ5 Minimum Deposit
- โ Jokerโs Jewels
- โ Daily new bonuses

18+ | Terms & conditions apply. | Lucky Heroes Casino.
- โ 100% Bonus
- โ 200 Bonus Spins
- โ 15% Weekly Cashback

18+ | Terms & conditions apply. | Richardd Casino.
- โ 100% Bonus
- โ 100 Bonus Spins
- โ Elvis Frog in Vegas

18+ | Terms & conditions apply. | Voodoo Casino.
- โ 100 Bonus Spins
- โ Hit The Route
- โ Lucky Lady Moon

18+ | Terms & conditions apply. | WinningDays Casino.
- โ On your first deposit
- โ Book of Cats
- โ Bitcoin accepted

18+ | Terms & conditions apply. | Captain Spins Casino.
- โ 260 free spins
- โ Skrill
- โ 100% bonus

18+ | Terms & conditions apply. | LV Bet Casino.
- โ Wild Hop & Drop
- โ Code: HOPDROP
- โ 200% Casino Bonus

18+ | Terms & conditions apply. | Casino Friday.
- โ 100% Bonus
- โ 200 Bonus-Spins
- โ Non-Sticky

18+ | Terms & conditions apply. | StreamBetz Casino.
- โ โฌ10 Min. Deposit
- โ 100 Bonus Spins
- โ Book of Fallen

18+ | Terms & conditions apply. | JackpotCity Casino.
- โ 100% Match Bonus
- โ โฌ10 Min. Deposit
- โ Casino Mobile App

18+ | Terms & conditions apply. | WildTornado Casino.
- โ 100 Free Spins
- โ WILD100
- โ โฌ10 minimum deposit

18+ | Terms & conditions apply.
- โ 100 Bonus Spins
- โ Elvis Frog in Vegas
- โ Min.dep: โฌ20

18+ | Terms & conditions apply.
- โ Miss Cherry Fruits
- โ On first deposit
- โ Crypto deposits accepted

18+ | Terms & conditions apply.
- โ 100% Match Bonus
- โ Irish Casino
- โ Live Casino

18+ | Terms & conditions apply.
- โ 200 Bonus Spins
- โ 100% Bonus
- โ Live Casino

18+ | Terms & conditions apply.
- โ 20 Free Spins
- โ Non-Sticky
- โ Monday 50% Cashback

18+ | Terms & conditions apply.
- โ On First Deposit
- โ Book of Dead
- โ HD Live Casino games

18+ | Terms & conditions apply. | Winhalla Casino.
- โ Book of Vikings
- โ Code: 20FREESPINS
- โ โฌ200 Casino Bonus

18+ | Terms & conditions apply.
- โ Book of Fallen
- โ Code: 20FREESPINS
- โ โฌ400 Casino Bonus

18+ | Terms & conditions apply. | Jonny Jackpot Casino.
- โ โฌ5 Minimum Deposit
- โ Agent Jane Blonde Returns
- โ Fast Withdrawals

18+ | Terms & conditions apply.
- โ Valley of the Muses
- โ Code: 50FREESPINS
- โ 400% up to โฌ400

18+ | Terms & conditions apply.
- โ 100 Bonus spins
- โ Starburst
- โ Minimum Deposit โฌ10

18+ | Terms & conditions apply. | LeoVegas Casino.
- โ 200 Spins on Book of Dead
- โ Wagering 25x
- โ Minimum Deposit โฌ10

18+ | Terms & conditions apply.
- โ Up to โฌ500
- โ 150 Free Spins
- โ Book of Dead

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

18+ | Terms & conditions apply.
- โ Book of Dead
- โ On First Deposit
- โ โฌ10 Min Deposit

18+ | Terms & conditions apply.
- โ 40 Bonus Spins
- โ Starburst Xxxtreme
- โ 100% Bonus

18+ | Terms & conditions apply.
- โ 150 Zee spins
- โ 500 Zee points
- โ 100% bonus

18+ | Terms & conditions apply. | Vegas Lounge Casino.
- โ โฌ400 Casino Bonus
- โ No wagering requirements
- โ โฌ20 Minimum Deposit

18+ | Terms & conditions apply.
- โ 200 Bonus Spins
- โ 15% Weekly Cashback
- โ 100% Deposit Bonus

18+ | Terms & conditions apply.
- โ 150 Bonus Spins
- โ Juicy Fruits 27 Ways
- โ Coco Tiki

18+ | Terms & conditions apply. | King Billy Casino.
- โ 100 Bonus Spins
- โ 100% Bonus
- โ No Maximum Win

18+ | Terms & conditions apply.
- โ 100 Bonus Spins
- โ JockerPro
- โ Starburst

18+ | Terms & conditions apply.
- โ Up to โฌ5000
- โ 50 Bonus Spins
- โ Eligible Netent Games

18+ | Terms & conditions apply. | Energy Casino.
- โ โฌ10 Deposit
- โ Book of Dead
- โ Ireland Exclusive

18+ | Terms & conditions apply.
- โ โฌ100 Reload Bonus
- โ Weekly Tournaments
- โ 100% Match Bonus

18+ | Terms & conditions apply. | Party Casino.
- โ 20 Bonus Spins
- โ Melon Madness Deluxe
- โ 100% Match Bonus

18+ | Terms & conditions apply.
- โ 50 bonus spins
- โ New casino NZ
- โ 200% bonus

18+ | Terms & conditions apply.
- โ Fast sign up
- โ VIP treatment
- โ Fast cashouts

18+ | Terms & conditions apply.
- โ Up to โฌ2000
- โ โฌ20 Min. Deposit
- โ Code: ROYAL

18+ | Terms & conditions apply.
- โ 25 Free Spins
- โ Wild Toro
- โ 100% Bonus

18+ | Terms & conditions apply.
- โ Betting
- โ Book of Dead
- โ Live casino

18+ | Terms & conditions apply.
- โ 10 free spins
- โ Starburst
- โ 100% bonus
Table of Contents
๐ 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.
๐ 400% Casino Deposit Bonuses Explained
As its name suggests, a 400% casino deposit bonus is a deal you receive based on the deposit you make. Usually, these bonuses are offered to newly registered players. Once they create a casino account and make a qualifying deposit, they receive free cash which quintuples their bankroll. Sometimes, casinos offer a 400% bonus within a welcome package. In this case, bonuses must be claimed in the order specified by the casino.
Other than welcome bonuses, some Irish online casinos offer 400% reload bonuses. While these are rare, they exist and can boost your bankroll significantly. They are tailored for existing players, to make them come back for more.
Whichever 400% bonus offer you want to claim, you must read the rules attentively. They will tell you whether a promo code is needed, how much you must deposit, what is the maximum bonus amount you can get and how much time you have to use the free cash.
๐ How to Keep Winnings from 400% Casino Deposit Bonuses
Another rule you must pay attention to is what it takes to keep your winnings. Under the bonus terms and conditions, you will find a so-called wagering requirement, indicating how much in real money you must bet to turn the bonus into real money.
In most cases, a playthrough is set at 40x the bonus amount. However, a 400% deposit match may be subject to a higher wagering requirement. Sometimes, as high as 80x. While higher wagering requirements are understandable given the generous amount you can receive, we recommend bonuses that carry lower ones.
๐ 400% Casino Deposit Bonuses: Limits and Restrictions
Casino bonuses come with certain restrictions. The casino will specify how much in bonus funds you can receive and sometimes how much you can keep and cash out. Furthermore, you wonโt be able to place high bets while wagering the bonus. Instead, the operator will set bet limits at โฌ3 or โฌ5 per round. You must not exceed these amounts when wagering real money to complete the playthrough or your bonus funds may be null.
Time limits apply too. The casino will limit how much time you have to use the bonus and meet the wagering requirement. Timeframes can be anywhere from 7 to 30 days.

๐ 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:
๐ 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.
๐ 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 casino games 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.
๐ 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.
๐ 400% Casino Bonus โ Advantages?
If you are on a budget, 400% casino bonuses can enable you to increase your bankroll and play longer. With 5x more money in your account than initially deposited, you can play more casino games and stand more chances to win. Also, you can use free money to play games you otherwise wouldnโt.
Use the free cash to try your luck at highly volatile slots or place bets on skill-based games to master them. The best thing about 400% bonuses are that they provide multiple options and opportunities to win.
๐ 400% casino bonus โ 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.
๐ 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.
๐ 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.
๐ 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 it 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.
Yes, these bonuses carry wagering requirements, which can sometimes be higher than those applying to standard offers.
To meet a wagering requirement, you must play eligible games using real money. Keep in mind that not all casino games contribute to wagering requirements in the same fashion. For instance, bets on most slots contribute at a rate of 100% while those you place on table games do it at lower rates or do not contribute at all.ย ย ย ย
๐ Related articles
- Play for free when you claim โฌ50 free no deposit!
- 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 24/08/23 by Erik King