Are you looking for a 300% casino bonus to claim from Ireland?
Casino bonuses are a big part of online casinos. These bonuses start from 100% and may go as high as 300%. Just like any other business, casinos use these bonuses to attract and promote casinos. They’ll match your deposit up to a specific amount. These are excellent deals, especially if you have a tight gambling budget, and some of them are even instant bonuses. You may simply triple that budget with the help of 300% casino bonus offers.
These are the best 300% Irish casino bonuses available right now!



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

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

18+ | Terms & conditions apply.
- ✓ Up to €500
- ✓ On first deposit
- ✓ Sports Betting

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

18+ | Terms & conditions apply.
- ✓ €700 Casino Bonus
- ✓ 50 Bonus Spins
- ✓ Fruit Zen

18+ | Terms & conditions apply.
- ✓ Book of Fallen
- ✓ 120% up to 300
- ✓ 120 Extra Spins

18+ | Terms & conditions apply.
- ✓ Book of Dead
- ✓ €200 Casino Bonus
- ✓ 50 Extra Spins

18+ | Terms & conditions apply.
- ✓ 100% up to €500
- ✓ 100 Bonus Spins
- ✓ Code: bca7z

18+ | Terms & conditions apply.
- ✓ The Dog House
- ✓ 100% up to €1000
- ✓ 100 Bonus Spins

18+ | Terms & conditions apply. | Doggo Casino.
- ✓ Book of Dead
- ✓ 100% up to €500
- ✓ 200 Bonus Spins

18+ | Terms & conditions apply.
- ✓ Across the universe
- ✓ 100% up to €500
- ✓ 100 Bonus Spins

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

18+ | Terms & conditions apply.
- ✓ Across the Universe
- ✓ 100% up to €500
- ✓ 100 Bonus Spins

18+ | Terms & conditions apply. | CasiGo Casino.
- ✓ €5 Minimum Deposit
- ✓ Joker’s Jewels
- ✓ Daily new bonuses

18+ | Terms & conditions apply.
- ✓ Big Bass Keeping it Reel
- ✓ 100% up to €111
- ✓ 33 Extra Spins

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

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

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

18+ | Terms & conditions apply.
- ✓ Up to €500
- ✓ On first deposit
- ✓ Wagering Requirement: 5x

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

18+ | Terms & conditions apply. | Vulkan Vegas Casino.
- ✓ Book of Dead
- ✓ €300 Casino Bonus
- ✓ 25 Extra Spins

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

18+ | Terms & conditions apply.
- ✓ Rotiki slot
- ✓ Code: ROTIKI
- ✓ 200% Casino Bonus

18+ | Terms & conditions apply.
- ✓ 100% Match Bonus
- ✓ €10 Min. Deposit
- ✓ Casino Mobile App

18+ | Terms & conditions apply.
- ✓ 100 Free Spins
- ✓ WILD100
- ✓ €10 minimum deposit

18+ | Terms & conditions apply.
- ✓ 100% Match Bonus
- ✓ On first deposit
- ✓ Weekly Cashback

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

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

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

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

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

18+ | Terms & conditions apply. | Winhalla Casino.
- ✓ Book of Vikings
- ✓ Code: 20FREESPINS
- ✓ €200 Casino Bonus

18+ | Terms & conditions apply.
- ✓ Book of Fallen
- ✓ Code: 20FREESPINS
- ✓ €400 Casino Bonus

18+ | Terms & conditions apply.
- ✓ Up to €600
- ✓ €10 Min. Deposit
- ✓ Crypto Bonus available

18+ | Terms & conditions apply. | Jonny Jackpot Casino.
- ✓ €5 Minimum Deposit
- ✓ Agent Jane Blonde Returns
- ✓ Fast Withdrawals

18+ | Terms & conditions apply.
- ✓ Valley of the Muses
- ✓ 400% 1st Deposit Bonus
- ✓ Up to €400

18+ | Terms & conditions apply.
- ✓ 100 Bonus spins
- ✓ Starburst
- ✓ Minimum Deposit €10

18+ | Terms & conditions apply. | LeoVegas Casino.
- ✓ 200 Spins on Book of Dead
- ✓ Wagering 25x
- ✓ Minimum Deposit €10

18+ | Terms & conditions apply.
- ✓ Up to €500
- ✓ 150 Free Spins
- ✓ Book of Dead

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

18+ | Terms & conditions apply.
- ✓ Book of Dead
- ✓ On First Deposit
- ✓ €10 Min Deposit

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

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

18+ | Terms & conditions apply. | Vegas Lounge Casino.
- ✓ €400 Casino Bonus
- ✓ No wagering requirements
- ✓ €20 Minimum Deposit

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

18+ | Terms & conditions apply. | Twin Casino.
- ✓ 200 free spins
- ✓ Book of Dead
- ✓ Minimum deposit €10

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

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

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

18+ | Terms & conditions apply.
- ✓ Up to €5000
- ✓ 50 Bonus Spins
- ✓ Eligible Netent Games

18+ | Terms & conditions apply. | Energy Casino.
- ✓ €10 Deposit
- ✓ Book of Dead
- ✓ Ireland Exclusive

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

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

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

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

18+ | Terms & conditions apply.
- ✓ Up to €2000
- ✓ €20 Min. Deposit
- ✓ Code: ROYAL

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

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

18+ | Terms & conditions apply.
- ✓ 10 free spins
- ✓ Starburst
- ✓ 100% bonus
Table of Contents
📌 Recommended Online Casinos
There are many outstanding 300% Casino Bonuses for you to enjoy. The welcome bonuses offered at some of these casinos are enormous.
The welcome bonuses at these casinos are above the standard, and the player experience is everything but average. These casinos do not feel the need to tempt gamers with grandiose promises and massive welcome bonuses since they know they have that extra something.
Running after those large bonuses is not always the best course of action. The first thing you should consider is sticking to casinos where you know you have a good shot of winning. So pick something worth your time, effort, and money. There are as many terrible bonuses offers as there are bad casinos, so make your decision carefully.
To help you out, we have a list of the best 300% casino bonuses for you to enjoy. Plus it means you don’t have to search for them yourself. So take a look at the best options here:

📌 Casino Bonuses in General
Who doesn’t enjoy a decent casino welcome bonus? It would be silly not to take advantage of the increased game time and positive expected value that this provides. As a new player, you’ll almost always be allowed to claim a welcome bonus, which can come in the form of free spins, bonus cash, or a combination of the two. Our recommendation is to go for it!
📌 300% casino bonus – downsides
There’s a lot to be said for claiming a 300% match deposit bonus, not least you get a massive boost to your bankroll. However, there are a few downsides too. The main one of these is that this type of bonus always has wagering requirements attached. These can be quite high too, and this can make it hard for you to get your hands on any winnings.
📌 Things to keep in mind when claiming large casino bonuses
📌 Wagering Requirements
It is important to meet the wagering requirement within the specified time frame. If you think this may be difficult for you. It is wise to deposit a smaller amount and spin away knowing that you’ll be able to meet the wagering requirement within the time frame.
📌 300% Casino Bonus Cash Out Limits
Your 300% casino bonus will almost always have a cash-out limit, which is normally a certain amount related to your deposit. If you deposit €34, you may be able to cash out up to 5 times your initial deposit: 5174.
It is important to check the cash-out limit, especially if you are using your bonus to play jackpot slots. It is a wise idea to first complete your wagering requirements on a non-progressive slot before moving on to the latter.
📌 300% Casino Bonus Time Limits
Even if a promotion is ongoing, it will have an end date. It is critical to read the terms and conditions of your 300% Casino Bonus to understand what could happen if the conditions are not met.
📌 FAQ
A 300% casino bonus is a huge incentive to sign up for a site. Because most casinos only give deposit bonuses of 100%, also known as a Match Bonus. Fortunately, some casinos are going all out with their welcome bonuses, offering up to 300% on your first deposit.
It’s to attract more customers to casino websites. Imagine a casino that offers a 300% match bonus on your initial deposit. These types of casino sites will most likely be your first pick if you are a beginner player. Every online casino offers some sort of welcome bonus though deposit bonuses of 300% are quite rare.
No, not all of them offer a 300% bonus. This is why you need to check our list of the top 300% deposit bonus casinos so you can find the perfect place to play!
📌 Related articles
- Get €5 free no deposit casino bonuses using our guide!
- Check out these free casino cash bonuses!
- Play for free and get yourself 25 free spins no deposit!
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 24/03/23 by Erik King