Are you after a 300% casino bonus you can claim in Ireland?
Casino bonuses are a staple of online casinos in Ireland. Match offers usually start at 100% and, in some cases, climb to 300%. Operators use them to attract players by matching your deposit up to a stated limit, which can be a serious boost to your bankroll if you are playing on a budget. With a 300% casino bonus, you can often triple your deposit in bonus funds, giving you more time on the reels and more chances to cash out a profit if you meet the terms.
These are the best 300% Irish casino bonuses available right now!
18+ | Terms & conditions apply.
- ✓ Take Olympus (Betsoft)
- ✓ 100% up to €500
- ✓ 50 Bonus Spins
18+ | Terms & conditions apply. | Slotbox Casino
- ✓ Buffalo Wealth (Betsoft)
- ✓ 100% up to €100
- ✓ €20 Casino Min. Dep.
18+. New players only. Exclusive bonus on registration available only through our promotional link: 25 Free Spins on Buffalo Wealth (Betsoft). 35x wagering requirement on bonus money. Maximum bet €5. Maximum cashout €50. No deposit required. No verification needed. Bonus available as a pop-up and in the Rewards menu after registration. First deposit bonus: 100% up to €100 + 100 Free Spins. Minimum deposit €20. 40x wagering requirement on the bonus and 35x on Free Spins winnings, to be completed within 7 days. Maximum cashout from bonus winnings is €3,000. Maximum cashout from Free Spins winnings is €300. General Terms & Conditions apply.
18+ | Terms & conditions apply.
- ✓ 100 Bonus Spins
- ✓ €9 Minimum Deposit
- ✓ 20% Cashback
18+. New players only. First Deposit Bonus: 200% up to €878 + 100 Bonus Spins, min. deposit €9, 60x wagering on deposit and bonus. Terms apply.
18+ | Terms & conditions apply. | Mr Fortune Casino
- ✓ €700 Casino Bonus
- ✓ 50 Bonus Spins
- ✓ Fruit Zen
18+ | Terms & conditions apply.
- ✓ Gates of Olympus (Pragmatic Play)
- ✓ 100% up to €920
- ✓ 200 Bonus Spins
18+. New players only. Exclusive bonus on registration available only through our promotional link: 200 Free Spins on Gates of Olympus (Pragmatic Play). No bonus code required. 20x wagering requirement on bonus money. Maximum bet €7. Maximum win €15. Email confirmation required. Minimum deposit of €4.33 required to withdraw winnings. Credited directly to your account balance upon registration. First deposit bonus: 100% up to €920 + 200 Free Spins. Minimum deposit €10. 45x wagering requirement. Minimum bet €0.1. Maximum bet €4.6. Maximum win capped at 4x the bonus amount. Note: EUR amounts have been converted to local currency using the latest available exchange rate. Original casino terms prevail in case of discrepancy. General Terms & Conditions apply.
18+ | Terms & conditions apply. | BCasino
- ✓ 100% up to €500
- ✓ 50 Bonus Spins
- ✓ Fruit Zen
18+ | Terms & conditions apply.
- ✓ Bonus code: 100WIN
- ✓ Available on 5 selected slots
- ✓ 50% up to €2500 + 20 FS
18+. New players only. Exclusive bonus on registration available only through our promotional link: 100 Free Spins on Royal Joker: Hold and Win (Playson), Big Bass Bonanza (Pragmatic Play), Gold Rush with Johnny Cash (BGaming), Book of Demi Gods 2 (Spinomenal), or Starburst (NetEnt). Bonus code: 100WIN. 35x wagering requirement. Maximum bet €5. Maximum cashout €50. No verification required. Minimum deposit of €20 required to withdraw winnings. Enter the promo code in the bonus section of your account after registration. First deposit bonus: 50% up to €2,500 + 20 Bonus Spins on Book of the Fallen (Pragmatic Play), Coin Strike Hold and Win (Playson), Big Bass Splash (Pragmatic Play), or Gold Rush with Johnny Cash (BGaming). Minimum deposit €20. Maximum bet €5. Maximum win €50. General Terms & Conditions apply.
18+ | Terms & conditions apply. | Galactic Wins Casino
- ✓ Tiger's Claw (Betsoft)
- ✓ 100% up to €500
- ✓ 50 Spins on Fruit Zen
18+ | Terms & conditions apply.
- ✓ Available on 5 selected slots
- ✓ Bonus code: GET75
- ✓ 100% up to €1500 + 50 FS
18+. New players only. Exclusive bonus on registration available only through our promotional link: 75 Free Spins on Royal Joker: Hold and Win (Playson), Big Bass Bonanza (Pragmatic Play), Gold Rush with Johnny Cash (BGaming), Book of Demi Gods 2 (Spinomenal), or Starburst (NetEnt). Bonus code: GET75. 35x wagering requirement. Maximum bet €5. Maximum win €50. Maximum withdrawal €50. No verification required. Minimum deposit of €20 required to withdraw winnings. Enter the promo code in your account to activate. First deposit bonus: 100% up to €1,500 + 50 Free Spins (min deposit €20), 125% + 100 Free Spins (min deposit €50), or 150% + 150 Free Spins (min deposit €600). General Terms & Conditions apply.
18+ | Terms & conditions apply.
- ✓ Bonus code: 100WIN
- ✓ Available on 5 selected slots
- ✓ 100% up to €1000 + 25 FS
18+. New players only. Exclusive bonus on registration available only through our promotional link: 100 Free Spins on Royal Joker: Hold and Win (Playson), Big Bass Bonanza (Pragmatic Play), Gold Rush with Johnny Cash (BGaming), Book of Demi Gods 2 (Spinomenal), and Starburst (NetEnt). Bonus code: 100WIN. 35x wagering requirement on bonus money. Maximum bet €5. Maximum cashout €50. No verification required. After registration, go to the bonus section in your account and enter the bonus code. Minimum deposit €20 required to withdraw winnings. First deposit bonus: 100% up to €1,000 + 25 Free Spins on Lucky Wheel (Red Rake). Minimum deposit €20. Maximum bet €5. Maximum cashout €50. General Terms & Conditions apply.
18+ | Terms & conditions apply.
- ✓ 275% Bonus
- ✓ On First Deposit
- ✓ 1st Dep. Bonus Code: F01
18+. New players only. Exclusive bonus on registration available only through our promotional link: €20 Free Cash. 50x wagering requirement. Maximum bet €3. Maximum cashout €20. Email confirmation required. Minimum deposit of €10 required to withdraw winnings. First deposit bonus: 275% bonus. Promo code: F01. 30x wagering requirement. Maximum bet €3. Maximum cashout limited to 20x your deposit. Minimum deposit €10. Note: Original casino terms prevail in case of discrepancy. General Terms & Conditions apply.
18+ | Terms & conditions apply.
- ✓ Available on 5 selected slots
- ✓ Bonus code: SWEET75
- ✓ 100% up to €1500 + 50 FS
18+. New players only. Exclusive bonus on registration available only through our promotional link: 75 Free Spins on Royal Joker: Hold and Win (Playson), Big Bass Bonanza (Pragmatic Play), Gold Rush with Johnny Cash (BGaming), Book of Demi Gods 2 (Spinomenal), or Starburst (NetEnt). Bonus code: SWEET75. 35x wagering requirement. Maximum bet €5. Maximum win €50. Maximum withdrawal €50. No verification required. Minimum deposit of €20 required to withdraw winnings. Enter the promo code in your account to activate. First deposit bonus: 100% up to €1,500 + 50 Free Spins (min deposit €20), 125% + 100 Free Spins (min deposit €50), or 150% + 150 Free Spins (min deposit €600). General Terms & Conditions apply.
18+ | Terms & conditions apply.
- ✓ Bonus code: FREE10
- ✓ Yummy Dumplings (Gamzix)
- ✓ 100% up to €300
18+. New players only. Exclusive Bonus on Registration: 10 Free Spins on Yummy Dumplings (Gamzix). Bonus code: FREE10. Wagering requirements 45x with bonus money. Max bet €5. Max win €30. Max withdrawal €10,000. Email and KYC verification required. Bonus is automatically credited to the bonus balance after registration. Min deposit €10 required to withdraw winnings. Deposit Bonus offer: 100% up to €300 + 200 Free Spins + 3 coins on the 1st deposit. Min deposit €20. Wagering requirements 45x. Max bet €5. Max withdrawal from cash bonus 10x the deposit amount. Max withdrawal from Free Spins €100. Terms apply.
18+ | Terms & conditions apply.
- ✓ Candy Craze (Evoplay)
- ✓ 100% up to €500
- ✓ 100 Bonus Spins
18+. New players only. 70 Free Spins on Candy Craze (Evoplay), wagering 5x, max bet €5, max win capped at 3x winnings from Free Spins, phone verification required, €20 min. deposit to withdraw winnings. First deposit bonus: Deposit min. €10 after the first hour, get 100% bonus up to €500, wagering 40x on bonus, max transfer €500, max cashout x5 the bonus amount. Includes 100 Bonus Spins on Big Bass Splash, wagering 40x, max cashout €100 from spins. Terms apply.
18+ | Terms & conditions apply.
- ✓ Aloha King Elvis
- ✓ 100% up to €500
- ✓ 100 Bonus Spins
18+ | Terms & conditions apply.
- ✓ Bonus code: TOD35
- ✓ Tower of Fortuna (Betsoft)
- ✓ Wager 0x
18+. New players only. 35 Free Spins on Tower of Fortuna (Betsoft), CODE: TOD35, no wagering, max bet €4, max win €20. Email verification required. Bonus must be activated with the bonus code in the player profile. Min. deposit €20 required to withdraw winnings. Welcome Bonus Package: 1st deposit 100% up to €300, 2nd deposit 50% up to €400, 3rd deposit 100% up to €300. Min. deposit €20 per bonus, bonus must be selected before deposit. No wagering requirements. Max bet €4 while bonus is active. Max withdrawal 5x bonus amount. Bonus is forfeited upon withdrawal request. Terms apply.
18+ | Terms & conditions apply.
- ✓ Bonus code: OLYMP50
- ✓ Book of Books (Peter &Sons)
- ✓ 0x Wager
18+. New players only. 50 Free Spins on Book of Books (Peter & Sons), CODE: OLYMP50, 0x wagering, max cashout €30, email verification required. Activate the bonus code during registration in your profile. Min. deposit €20 required to withdraw winnings. First Deposit Bonus: 100% up to €300 + 50 Bonus Spins on Book of Zeus, wager-free, min. deposit €20. Terms apply.
18+ | Terms & conditions apply.
- ✓ 110 Bonus Spins
- ✓ Elvis Frog TRUEWAYS (BGaming)
- ✓ Bonus code: REELS
18+. New players only. CODE: REELS. First deposit bonus 110% up to €1,000 on deposits from €20. Includes 110 Bonus Spins on Elvis Frog TRUEWAYS, 55 credited on day 1 and 55 on day 2. Bonus terms, wagering requirements and withdrawal limits may apply. Terms apply.
18+ | Terms & conditions apply.
- ✓ Available on 5 slots
- ✓ Bonus Code: 100WIN
- ✓ 100% up to €1500 + 50 FS
18+. New players only. Exclusive bonus on registration available only through our promotional link: 100 Free Spins on Royal Joker: Hold and Win (Playson), Big Bass Bonanza (Pragmatic Play), Gold Rush with Johnny Cash (BGaming), Book of Demi Gods 2 (Spinomenal), or Starburst (NetEnt). Bonus code: 100WIN. 35x wagering requirement. Maximum bet €5. Maximum cashout €50. No verification required. Minimum deposit of €20 required to withdraw winnings. Enter the promo code in the bonus section of your account after registration. First deposit bonus: 100% up to €1,500 + 50 Bonus Spins on Book of the Fallen (Pragmatic Play), Coin Strike Hold and Win (Playson), Big Bass Splash (Pragmatic Play), or Gold Rush with Johnny Cash (BGaming). Minimum deposit €20. Maximum bet €5. Maximum win €50. General Terms & Conditions apply.
18+ | Terms & conditions apply. | 24Casino
- ✓ Big Bass Splash / Voodoo People
- ✓ 100% up to €500
- ✓ 150 Bonus Spins
18+. New players only. 24 Free Spins on Big Bass Splash (Pragmatic Play) or Voodoo People (BGaming), 50x wagering, max bet €5, max win €5. Email verification required. Bonus activated via notification / promo section. First Deposit Bonus: 100% up to €500 + 150 Free Spins, min. deposit €20. Get 50 Free Spins on Sweet Bonanza instantly plus 20 Bonus Spins per day for 5 consecutive days on Big Bass Bonanza, John Hunter Book of Tut, Gates of Olympus 1000, Sugar Rush and Hot to Burn. Bonus Spins must be activated in the promo section. Terms apply.
18+ | Terms & conditions apply.
- ✓ Wild West TRUEWAYS (BGaming)
- ✓ Bonus Code: 30WW
- ✓ 100% up to €777
18+. New players only. 30 Free Spins on Wild West TRUEWAYS (BGaming), CODE: 30WW, 40x wagering, max bet €1, max win €50. Email verification required. Bonus available in the Wallet. Min. deposit €20 required to withdraw winnings. First Deposit Bonus: 100% up to €777 + 100 Free Spins on Elvis Frog TRUEWAYS (BGaming), CODE: SLOTS, min. deposit €20, 40x wagering on bonus and Free Spins winnings, max bet €5, max win 10x bonus amount. 50 Free Spins credited instantly and 50 the next day, activation required within 1 day. Bonus valid for 5 days. Terms apply.
18+ | Terms & conditions apply.
- ✓ Jewel Boom Super Drop (BGaming)
- ✓ 120% up to €2000
- ✓ 100 Bonus Spins
18+. New players only. 25 Free Spins on Jewel Boom Super Drop (BGaming), 40x wagering, max bet $5, max win $100. Email verification required. Bonus available in the Profile after registration and email confirmation. Min. deposit $30 required to withdraw winnings. First Deposit Bonus: 120% up to $2,000 + 100 Bonus Spins on Elvis Frog Trueways (BGaming), min. deposit $30, 40x wagering, valid for 7 days. Terms apply.
18+ | Terms & conditions apply.
- ✓ Bonus code: SPIN50WIN
- ✓ Avaliable on 5 slots
- ✓ €500 Bonus + 150 Spins
18+. New players only. No Deposit Bonus: 50 Free Spins on selected slots (Royal Joker: Hold and Win, Big Bass Bonanza, Book of Demi Gods 2, Starburst, Gold Rush with Johnny Cash). Code: SPIN50WIN. Email verification required. Bonus available in the Bonus section. Wagering 35x. Max bet €5. Max win €50. Min. deposit €10 required to withdraw winnings. First Deposit Bonus: 100% up to €500 + 150 Free Spins. Bonus wagering applies. Bonus valid 7 days. Max bet €5 during wagering. Terms apply.
18+ | Terms & conditions apply.
- ✓ Joker Stoker (Endorphina)
- ✓ 100% up to €500
- ✓ 100 Bonus Spins
18+. New players only. 50 Free Spins on Joker Stoker (Endorphina), wagering 5x, min. deposit €10 or currency equivalent to withdraw winnings, phone and email verification + KYC required, bonus available in-game, max conversion to real balance x3 Free Spins winnings after wagering. 100% first deposit bonus up to €500 + 100 Bonus Spins (50 per day) on Big Bass Splash (Pragmatic Play), min. deposit €10, wagering 40x for bonus and Bonus Spins, max cashout x5 the deposit amount, bonus must be activated before deposit, each bonus step valid 72h and must be completed in order, bonus expires in 5 days if wagering is not completed. Terms apply.
18+ | Terms & conditions apply.
- ✓ Sweet Bonanza (Pragmatic)
- ✓ 150% Bonus & 20 Bonus Spins
- ✓ Gates of Olympus 1000 (Pragmatic)
18+. New players only. 50 Free Spins on Sweet Bonanza (Pragmatic Play), 30x wagering, max bet €5, max win €10. Email & phone verification required, plus KYC with at least 1 document. Bonus available directly in the game. Min. deposit €5 to withdraw winnings. 1st deposit bonus: 150% + 20 Bonus Spins on Gates of Olympus 1000 (Pragmatic Play) for deposits €10–€20, wagering 40x on bonus and spins, max bonus €500, max cashout x5 of bonus amount up to €500, max conversion from spins winnings €20. Terms apply.
18+ | Terms & conditions apply.
- ✓ Big Bass Splash (Pragmatic Play)
- ✓ 100% up to €300
- ✓ 100 Bonus Spins
18+. New players only. 50 Free Spins on Big Bass Splash (Pragmatic Play), 35x wagering, max bet €5, max win €25. Phone verification required. To claim, launch a qualifying slot. Welcome Bonus: 100% up to €300 + 100 Bonus Spins on Big Bass Splash (Pragmatic Play) for deposits from €10. Bonus must be activated before deposit. Bonus valid for 48 hours, wagering 40x on cash bonus and 30x on spins, spins valid for 2 days. Max conversion x5 bonus amount. Bonus expires if wagering is not completed within 5 days. Terms apply.
18+ | Terms & conditions apply. | SlotoZen Casino
- ✓ Dragon’s nest (Mascot)
- ✓ 100% up to €300
- ✓ 100 Bonus Spins
18+ | Terms & conditions apply. | Wolfy Casino
- ✓ Bonus code: TAM35
- ✓ Tower of Fortuna (Betsoft)
- ✓ Wager 0x
18+. New players only. 35 Free Spins on Tower of Fortuna (Betsoft), CODE: TAM35, no wagering, max win €20. Email verification required. Bonus must be activated with the bonus code in the player profile. Min. deposit €20 required to withdraw winnings. Welcome Bonus Package: 1st deposit 100% up to €200, 2nd deposit 50% up to €300, 3rd deposit 50% up to €400, 4th deposit 100% up to €100. Min. deposit €20 per bonus. No wagering requirements. Max bet €4 while bonus is active. Max withdrawal 5x bonus amount. Bonus is forfeited upon withdrawal request. Terms apply.
18+ | Terms & conditions apply. | Jackpoty Casino
- ✓ 100 Bonus Spins
- ✓ Fortune Chest (Endorphina)
- ✓ Bonus code: FDB500
18+ | Terms & conditions apply.
- ✓ €5 No Deposit Casino Bonus
- ✓ Exclusive Bonus Codes
- ✓ Newest Online Casinos
18+ | Terms & conditions apply.
- ✓ Available on 3 slots
- ✓ 100% up to €100
- ✓ 180 Bonus Spins
18+. New players only. Exclusive bonus on registration available only through our promotional link: 50 Free Spins on Candy Starz, Elvis Frog in Vegas, or Gemhalla (BGaming). 40x wagering requirement on bonus money. Maximum bet €5. Maximum win €100. Maximum withdrawal €100. KYC verification required. Minimum deposit of €20 required to withdraw winnings. Available in your profile and notifications. First deposit bonus: 100% up to €100 (or 1 BTC) + 180 Free Spins. Minimum deposit €20. General Terms & Conditions apply.
18+ | Terms & conditions apply. | Winawin Casino
- ✓ 100 Bonus Spins
- ✓ Bonus code: WIN100
- ✓ Alien fruits 2 (BGaming)
18+ | Terms & conditions apply.
- ✓ Bonus code: TOP60SUMMER
- ✓ Le Bandit (Hacksaw)
- ✓ 200% up to €500
18+. New players only. 60 Free Spins on Le Bandit (Hacksaw), CODE: Top60summer, 40x wagering on bonus funds, max. bet €5, unlimited winnings, max. cashout €60. KYC verification required. VPN friendly. Min. deposit €20 required to withdraw winnings. Welcome Bonus: 200% up to €500 + 100 Bonus Spins on Dog House (Pragmatic Play), min. deposit €20, valid on the first 4 deposits. Terms apply.
18+ | Terms & conditions apply. | Wanted Win Casino
- ✓ 100 Bonus Spins
- ✓ BGaming slots
- ✓ €20 Minimum deposit
18+ | Terms & conditions apply.
- ✓ 100% up to €500
- ✓ 50 Free Spins
- ✓ Fruit Zen
18+. New players only. No Deposit Bonus: €5 on registration. Wagering requirement 99x. Maximum bet €4. Maximum win €200. Email confirmation required. Bonus is activated automatically once the player signs up. 1st Deposit Bonus: Deposit €20 and receive a 100% bonus up to €500 + 50 Free Spins on Fruit Zen with your first deposit. Wagering requirement 40x (deposit + bonus) and 25x on Free Spins winnings. Maximum bet while wagering is €4. Maximum promotional winnings capped at €1,000. Bonus expires within 7 days if wagering is not completed. Free Spins winnings are credited as bonus funds. Feature buys, low-risk betting strategies, and switching between low/high contribution games are prohibited while wagering. Free Spins are available on Fruit Zen, Coins of Zeus - Hold & Win™ and Book of Gold: Multichance. General Terms & Conditions apply.
18+ | Terms & conditions apply. | Verde Casino
- ✓ Book of Sirens
- ✓ Wagering x3
- ✓ 120% up to €300
18+ | Terms & conditions apply.
- ✓ Aztec Magic Deluxe
- ✓ €650 Bonus + 50 Spins
- ✓ €10 Minimum Deposit
18+ | Terms & conditions apply. | igo.bet Casino
- ✓ 50 Bonus Spins
- ✓ Bonus Code: 150IGSN
- ✓ On your first deposit
18+ | Terms & conditions apply.
- ✓ Wild Cash (BGaming)
- ✓ Bonus code: CASH
- ✓ 100% up to 1.5 BTC
18+. New players only. 50 Free Spins on Wild Cash (BGaming) with code CASH, wagering 45x, max win €50; no account verification required; enter code during sign-up, activate via notification or in account; no minimum deposit required to withdraw, but winnings must be wagered and meet minimum cashout balance. First deposit bonus: 100% up to 1.5 BTC + 100 Bonus Spins on Aloha King Elvis, min. deposit €20, wagering 35x (bonus and spins), max winnings from spins €100. Terms apply.
18+ | Terms & conditions apply.
- ✓ Super Sweets (Betsoft)
- ✓ Bonus Code: CRLS20
- ✓ 0x Wager
18+. New players only. 20 Free Spins on Super Sweets (Betsoft), CODE: CRLS20, 0x wagering, max withdrawal 5x the deposit amount. Email verification required. Activate the bonus code in the Bonus section of your profile after registration. Min. deposit €20 required to withdraw winnings. First Deposit Bonus: CODE: WELCOME100, 100% up to €500, min. deposit €20, no wagering requirements, max bet €3. Terms apply.
18+ | Terms & conditions apply. | Rocket Casino
- ✓ 50 Bonus Spins
- ✓ Aztec Magic Deluxe (Bgaming)
- ✓ €20 Min. Deposit
18+ | Terms & conditions apply.
- ✓ Super Sweets (Betsoft)
- ✓ Bonus Code: CRLS20
- ✓ 0x Wager
18+. New players only. 20 Free Spins on Super Sweets (Betsoft), CODE: CRLS20, 0x wagering, max withdrawal 5x the deposit amount. Email verification required. Activate the bonus code in the Bonus section of your profile after registration. Min. deposit €20 required to withdraw winnings. First Deposit Bonus: CODE: STARS1, 100% up to €300, min. deposit €20, no wagering requirements, max bet €3. Terms apply.
18+ | Terms & conditions apply.
- ✓ Gift Rush (Bgaming)
- ✓ 100% up to €500
- ✓ 20 Bonus Spins
18+. New players only. 30 Free Spins on Gift Rush (BGaming), 45x wagering, max bet €5, max win €50; email & phone verification required; bonus notification shown after registration; €10 minimum deposit to withdraw. Christmas Welcome Bonus: 110% up to €500 + 150 Free Spins + 3 Coins; 20 FS from €20 deposit, 150 FS from €50 deposit, 30 FS per day for 5 days; wagering 45x, €5 max bet, FS winnings capped at €100, cash bonus payout capped at 10x deposit; bonus valid 5 days. Terms apply.
18+ | Terms & conditions apply.
- ✓ Super Sweets (Betsoft)
- ✓ Bonus Code: CRLS20
- ✓ 0x Wager
18+. New players only. 20 Free Spins on Super Sweets (Betsoft), CODE: CRLS20, 0x wagering, max cashout €100. Email verification required. Activate the bonus code in the Bonus section of your profile after registration. Min. deposit €20 required to withdraw winnings. First Deposit Bonus: CODE: ORCA1, 100% up to €500, min. deposit €20, no wagering requirements, max bet €3, max withdrawal 5x the deposit amount. Terms apply.
18+ | Terms & conditions apply. | Thor Casino
- ✓ Super Sweets (Betsoft)
- ✓ Bonus Code: CRLS20
- ✓ 0x Wager
18+. New players only. 20 Free Spins on Super Sweets (Betsoft), CODE: CRLS20, 0x wagering, max withdrawal 5x the deposit amount. Email verification required. Activate the bonus code in the Bonus section of your profile after registration. Min. deposit €20 required to withdraw winnings. First Deposit Bonus: CODE: THOR1, 100% up to €200 + 25 Bonus Spins on Thor Hammer Time, min. deposit €20. Terms apply.
18+ | Terms & conditions apply.
- ✓ Primal Hunt
- ✓ Bonus Code: DLD20
- ✓ Wager Free
18+ | Terms & conditions apply. | Cobra Casino
- ✓ Beer Bonanza / Legacy Of Cobra
- ✓ 100% up to €1,000
- ✓ 250 Bonus Spins
18+ | Terms & conditions apply. | Ice Casino
- ✓ Book of Fallen
- ✓ 120% up to €300
- ✓ 120 Extra Spins
18+ | Terms & conditions apply. | SpinsCastle Casino
- ✓ 200 Bonus Spins
- ✓ Bonus Code: CASTLE1
- ✓ On Your First Deposit
18+ | Terms & conditions apply.
- ✓ Vikings Go Berzerk (Yggdrasil)
- ✓ 100% up to €500
- ✓ 100 Bonus Spins
18+ | Terms & conditions apply.
- ✓ 150% up to €150
- ✓ 20 Bonus Spins
- ✓ Vikings Go Berzerk (Yggdrasil)
18+ | Terms & conditions apply. | Merlin Casino
- ✓ Caishen's Arrival (Betsoft)
- ✓ Bonus code: LUCKY20
- ✓ 120% + 100 Wager-Free Spins
18+ | Terms & conditions apply.
- ✓ 50 Gratis Spins
- ✓ Gemhalla (Bgaming)
- ✓ Bonus Code: WIN500
18+. New players only. Exclusive Deposit Bonus: 150% up to €500 + 50 Bonus Spins on Gemhalla (BGaming). Bonus code required and available to copy from the promotional offer above. General Terms & Conditions apply.
18+ | Terms & conditions apply.
- ✓ 136 Bonus Spins
- ✓ Jingle Spin
- ✓ Bonus Code: JINGLE136
18+ | Terms & conditions apply.
- ✓ Take Olympus (Betsoft)
- ✓ €1000 Bonus + 100 Spins
- ✓ Gates of Olympus (Pragmatic)
18+ | Terms & conditions apply. | Vulkan Vegas Casino
- ✓ Book of Dead
- ✓ 120% up to €300
- ✓ 70 Bonus Spins
18+ | Terms & conditions apply. | Coolzino Casino
- ✓ Bonus Code: BLITZ3
- ✓ 100% up to €150
- ✓ 150 Bonus Spins
18+. New players only. Use code BLITZ3 for 50 Free Spins on Sweet Bonanza, Elvis Frog in Vegas, or Gates of Olympus. 30x wagering, max bet €5, max win €50. Min deposit to withdraw: €15. First deposit: 100% bonus up to €500, 35x wagering. Bonus valid 7 days. Terms apply.
18+ | Terms & conditions apply.
- ✓ 100 Bonus Spins
- ✓ Boom! Boom! Gold! (Booongo)
- ✓ €20 Min. Deposit
18+ | Terms & conditions apply.
- ✓ €20 Deposit
- ✓ Choose your slot
- ✓ Multiple Bonuses
18+. New players only. Min deposit €20. Rookie Rush Welcome Offer in three stages: wager €50 for 50 Bonus Spins; wager €250 for 200 Bonus Spins; wager €500 for 250 Bonus Spins. Wagering must be completed on selected Pragmatic Play slots. Bonus Spins available on: Sweet Bonanza Super Scatter, Gates of Olympus Super Scatter, Sugar Rush 1000, Floating Dragon, Zeus vs Hades Gods of War, Brick House Bonanza, Wisdom of Athena 1000, Big Bass Splash. Wagering must be completed within 7 days; Bonus Spins expire 72 hours after being credited. Wins from Bonus Spins credited as cash. Currency equivalents apply for non-USD players. Terms apply.
18+ | Terms & conditions apply. | BetLabel Casino
- ✓ 150 Bonus Spins
- ✓ €10 Minimum deposit
- ✓ Mariachi Afortunado (Mancala)
18+ | Terms & conditions apply.
- ✓ 200 Bonus Spins
- ✓ Big Bass Splash
- ✓ Non-Sticky Bonus
18+ | Terms & conditions apply.
- ✓ Lady Wolf Moon (Megaways)
- ✓ €100 Bonus & 75 Spins
- ✓ Minimum deposit €20
18+ | Terms & conditions apply. | Prontobet Casino
- ✓ On first deposit
- ✓ 10% Daily Cashback
- ✓ €10 Min. Deposit
18+ | Terms & conditions apply.
- ✓ 50 Bonus Spins
- ✓ Spinman (Hacksaw)
- ✓ €20 Min. Deposit
18+ | Terms & conditions apply.
- ✓ 200 Bonus Spins
- ✓ 1 Bonus Crab
- ✓ €10 Minimum deposit
18+ | Terms & conditions apply.
- ✓ 200 Bonus Spins
- ✓ 1 Bonus Crab
- ✓ €20 Minimum deposit
18+ | Terms & conditions apply.
- ✓ 100 Bonus Spins
- ✓ Sugar Rush (Pragmatic Play)
- ✓ Sports Betting
18+ | Terms & conditions apply.
- ✓ 100 Bonus Spins
- ✓ On Your First Deposit
- ✓ Sports Betting
18+ | Terms & conditions apply.
- ✓ 50 Bonus Spins
- ✓ Wild Cash (BGaming)
- ✓ 20% Weekly Cashback
18+ | Terms & conditions apply.
- ✓ 200 Bonus Spins
- ✓ 1 Bonus Crab
- ✓ 15% Weekly Cashback
18+ | Terms & conditions apply.
- ✓ 200 Bonus Spins
- ✓ 1 Bonus Crab
- ✓ Weekly Cashback 15%
18+ | Terms & conditions apply.
- ✓ 200 Bonus Spins
- ✓ 1 Bonus Crab
- ✓ Weekly Cashback 15%
18+ | Terms & conditions apply. | .. | Gransino Casino
- ✓ 200 Bonus Spins
- ✓ 1 Bonus Crab
- ✓ Weekly Cashback 15%
18+ | Terms & conditions apply. | Dazard Casino
- ✓ 100 Bonus Spins
- ✓ Bonus code: DZ100
- ✓ €10 Minimum deposit
18+ | Terms & conditions apply. | Seven Casino
- ✓ 1st Bonus
- ✓ Wagering Requirement: 10x
- ✓ Sports Betting
18+ | Terms & conditions apply. | Winstler Casino
- ✓ Up to €500
- ✓ On first deposit
- ✓ Sports Betting
18+ | Terms & conditions apply. | iWild Online Casino
- ✓ 200 Bonus Spins
- ✓ Sweet Bonanza
- ✓ On first deposit
18+ | Terms & conditions apply.
- ✓ Captain's Quest: Treasure Island
- ✓ 200% up to €1,000
- ✓ 100 Bonus Spins on Chili Pop
18+ | Terms & conditions apply. | Snatch Casino
- ✓ 100 Bonus Spins
- ✓ Dog House (Pragmatic Play)
- ✓ On first deposit
18+ | Terms & conditions apply. | Asino Casino
- ✓ Elvis Frog TRUEWAYS
- ✓ 50 Bonus Spins
- ✓ Bonus code: START
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300% Casino Bonus Explained
A 300% casino bonus is a deposit match available to new or existing players at Irish-facing casinos. New players usually encounter it as part of a welcome package, while existing customers may see it as a reload offer. Each promotion sets a maximum bonus amount, an eligible deposit range, and rules on game availability.
To claim, register with a reputable, Irish-friendly site from our list, then make the qualifying deposit. Some casinos require a promo code or a bonus activation toggle before you deposit, so always check the rules first. Sound operators clearly display the minimum deposit, maximum bonus, wagering requirement, game weighting, time limits, and any caps on winnings.
A quick word on bonus formats helps. Non-sticky, sometimes called parachute, bonuses let you play with your real money first, while sticky bonuses lock your funds together with the bonus until wagering is complete. This difference affects your withdrawal options, so check whether real cash or bonus cash is used first.
How Wagering Works and How To Keep Your Winnings
All wins generated while the bonus is active are credited to your bonus balance. To withdraw them, you must satisfy the wagering requirement within the time limit. On Irish sites, 30x to 40x wagering is common for standard bonuses. Because 300% offers deliver a large match, they can come with higher requirements. As a practical rule, anything above 60x is rarely worth the hassle for most punters.
Game weighting determines how much each bet contributes. Slots usually contribute 100%. Many table games, live dealer titles, and some high RTP or low volatility slots contribute less or are excluded altogether, which slows progress. Always read the eligible games list before you start.
Worked example
You deposit €50 and receive a 300% bonus of €150, for €200 total balance. If wagering is 40x the bonus, you must wager €6,000 (€150 x 40). If the term is 40x bonus plus deposit, you must wager €8,000 (€200 x 40). On 100% contribution slots with a €2 bet size, that is 3,000 spins in the first case or 4,000 in the second. If a game contributes 20%, you would need five times the number of bets to achieve the same progress.
📙 Erik King’s Quick Tip
Check whether gamble features on slots contribute to wagering. Some casinos exclude them or cap their contribution, while others count them like regular spins. Knowing this from the off avoids wasted play and helps you plan your route to completion.
Recommended Online Casinos
There are many outstanding 300% casino bonuses for Irish players, and the welcome bonuses at selected brands can be substantial. Beyond headline numbers, look for smooth site performance, quick euro withdrawals to Irish bank accounts, transparent terms, and responsive support. Casinos that do not rely on exaggerated promotions often signal confidence in their product quality.
Chasing the biggest match is not always the smart move. Prioritise casinos where you enjoy the games, understand the rules, and can realistically meet the wagering within the time window. That balance typically leads to better outcomes than picking an offer on percentage alone.
To make it easy, we curate the best 300% casino bonuses available today, so you do not have to hunt them down yourself. Review the options, compare the caps and time limits, then choose the one that suits your bankroll and play style.
Casino Bonuses in General
A strong welcome bonus stretches your funds and extends playtime, which can improve your chances of finishing wagering if you pick compatible games. New players typically receive a mix of bonus cash and free spins, and sometimes both. Whether you prefer spinning slots or exploring live dealer tables, claiming the right promotion gives you a comfortable runway to test the site and settle into a routine.
Benefits of a 300% Casino Bonus
The primary advantage is scale. A 300% match can quadruple your starting bankroll, giving you more spins, better cover during downswings, and more opportunities to hit a feature round or bonus game. With thoughtful bankroll management and a realistic plan for wagering, the extra playtime can be the difference.
📙 Erik King’s Quick Tip
If the offer is non-sticky, casinos usually use your real money first. If you land an early win before the bonus balance is touched, you may be able to withdraw those real money profits without continuing with the bonus. Confirm the format in the terms or with support before you start.
300% Casino Bonus Downsides
High matches often come with trade-offs. Wagering can be higher than standard, certain games may be restricted, and maximum bet limits can cramp your preferred staking pattern. Some offers also set a maximum conversion, which caps how much you can cash out from the bonus, even if you win more during play. Understanding these constraints helps you decide if the extra funds are worth the conditions.
Things To Keep In Mind When Claiming Large Casino Bonuses
Consider the whole package, not just the percentage. The best offer is the one you can complete on time with games you actually like, at stakes that suit your bankroll.
Wagering Requirements
You must complete wagering within the stated window. If your available playtime is limited, reduce your deposit to a level where the wagering target is realistic. Consistency matters more than a single long session, so plan short sessions that still move the meter. If game weighting is restrictive, switch to eligible titles early rather than discovering an exclusion late.
300% Casino Bonus Cash Out Limits
Many 300% offers include a maximum conversion rule. This can be a multiple of your deposit or a fixed euro cap. For example, if an offer caps conversions at 5x your deposit and you deposit €34, the maximum you can withdraw from bonus winnings would be €170. Anything above the cap reverts to the casino when you request a withdrawal.
If you plan to play jackpot slots, remember that progressive jackpots are often excluded from bonus play or from the conversion cap. Finishing your wagering on non-progressive games first, then switching to jackpots with real money, is usually the safer approach.
300% Casino Bonus Bet Limits
Maximum bet limits are standard while wagering. On many Irish sites, the ceiling is around €5 per spin or game round, but some set it lower or tie it to a percentage of your bonus balance. Exceeding the max bet can void the bonus and any winnings derived from it. Read the bonus terms before you start, and if you change stake sizes, double check that autoplay or feature buys do not accidentally exceed the limit.
📙 Erik King’s Quick Tip
Treat the published max bet as a hard line. Keep each individual stake at or below the limit, and avoid stacking side bets or using features that break a round into separate wagers. Staying clearly under the threshold protects your progress if the account is reviewed.
300% Casino Bonus Time Limits
Bonuses have expiry dates and specific windows to meet wagering, often between 3 and 14 days for large matches. If you miss the deadline, the bonus and any associated winnings are typically forfeited. Note that free spins may have a shorter expiry than bonus cash, so use them first if both are issued at once.
Comparing 300% Bonuses With Other Matches
A 300% bonus looks bigger than 100% or 200%, but the best value depends on your bankroll, time, and preferred games. If you play low stake slots and can dedicate steady time, a larger match can be efficient. If you prefer table games that contribute less or you play infrequently, a smaller match with lighter terms may convert better. Skim the effective wagering burden, contribution rules, and max conversion to decide which route gives you the smoothest path to cashing out.
Eligibility, Payments, and Verification
Deposit methods matter. Some payment options, such as certain e-wallets or prepaid vouchers, may be excluded from welcome bonuses. Check the eligible methods list and use one that qualifies. Your account must also pass standard KYC checks before withdrawals are processed. Verifying your identity early avoids delays after you complete wagering, especially if you plan to withdraw larger amounts. Have your documents ready, such as photo ID and a recent proof of address with your Eircode, so there is no messing when you request a payout.
Game Choice, RTP, and Volatility
Because slots usually contribute 100%, they are the default for clearing. High RTP games reduce house edge fractionally over long sessions, while medium volatility slots provide steadier wagering progress with occasional features to top up the balance. If a favourite slot is capped or excluded, pick a comparable title from the eligible list rather than mixing in low contribution games that slow progress.
Practical Steps To Claim and Clear
- Read the bonus summary, then open the full terms.
- Activate any required code or toggle before depositing.
- Confirm max bet, eligible games, and the wagering formula.
- Set a target stake that fits the time limit and your bankroll.
- Verify your account documents so withdrawals are smooth.
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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.
GRAI | Gamblers Anonymous Ireland | Extern Problem Gambling | GambleAware | GamblingCare | IACP | Aware
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