Why do online casinos give out 400% first deposit bonuses?

Online casinos give out 400% first deposit bonuses in order to encourage casino players to try out their platforms and consider playing there in the longer term.

Are 400% deposit bonus casino sites safe?

Yes, 400% deposit bonus casino sites are safe, as long as they're licensed and regulated by a reputable body. As well as having passed our test for safety and security, each of the 400% deposit bonus casinos we've recommended here are licensed and regulated by the Malta Gaming Authority (MGA) and/or another reputable gaming authority.

Can I keep winnings from a 400% casino deposit bonus?

Yes, you can keep your winnings from a 400% casino deposit bonus, as long as you've fulfilled the terms and conditions of the promotion.

Can I get free spins as part of the 400% casino bonus?

Yes, you can get free spins as part of a 400% casino bonus if you choose a welcome package that bundles the 400% deposit match with bonus spins.

Can I win real money with a casino 400% bonus?

Yes, you can win real money with a casino 400% bonus, just as you can with any other casino bonus offer.

400% Deposit Bonus Casinos - page 23

Alina Anisimova, Isobel Coughlan

Updated:25.6.2026

507
The Slotz Casino
Launched 2025
100% up to 800€ + 300 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus, which gives you a 100% match up to €800 on your deposit. You also get 300 free spins on Big Bass Splash. No bonus code is needed, the bonus activates on your qualifying deposit at The Slotz Casino.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Time limit10 days
Wagering30 x B+
The wagering requirement on the 100% bonus is 30x on the bonus only, which sits in the standard range. With a €100 deposit you get a €100 bonus, and €100 x 30 = €3,000 in wagers. The 300 free spins carry 30x wagering on their winnings.
The Slotz Casino Bonuses
18+ Full Terms Apply. Play Responsibly.

508
Luckyelf Casino
Crypto Accepted
100% up to 100€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Luckyelf Casino. You get a 100% match up to €100 on your deposit and 100 free spins worth a total of €10. Use bonus code ELF1 when depositing.
Minimum deposit20€
Bonuses & Restrictions
Time limit14 days
Wagering40 x (D+B)+
The wagering is 40x on your deposit plus bonus, which is above average. With a €100 deposit at 100% you get a €100 bonus, so €100 + €100 = €200 x 40 = €8,000 in wagers. The 100 free spins carry 40x wagering on their winnings.
Luckyelf Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
509
FatPirate Casino
100% up to 500€ + 200 free spins
Main details
Bonus type1st deposit bonus+
FatPirate Casino matches your deposit 100% up to €500 and gives you 200 free spins worth €20 in total. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit30 days
Wagering35 x (D+B)+
Wagering on the cash bonus is 35x on your deposit plus bonus, which sits in the standard range. With a €100 deposit you get a €100 bonus, so €100 + €100 = €200, and €200 x 35 = €7,000 in wagers. The 200 free spins carry 40x wagering on their winnings.
FatPirate Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
510
Booms.bet
Crypto Accepted
100% up to 500€
Main details
Bonus type1st deposit bonus+
Booms.bet matches your deposit 100% up to €500 as a deposit bonus. Deposit at least €30 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit30€
Bonuses & Restrictions
Max bet5€
Time limit7 days
Wagering40 x B+
Wagering on the cash bonus is 40x the bonus amount, which is on the high side. With a €100 deposit you get a €100 bonus, and €100 x 40 = €4,000 in wagers. Max bet while wagering is €5 per round, and you have 7 days to clear it.
Booms.bet Bonuses
18+ Full Terms Apply. Play Responsibly.
511
RTBET
Crypto Accepted
100% up to 750€ + 200 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €30 to claim this deposit bonus from RTBET, which gives you a 100% match up to €750 on your deposit. You also get 200 free spins worth €20 in total. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit30€
Bonuses & Restrictions
Time limit10 days
Wagering35 x (D+B)+
The wagering requirement is 35x on your deposit plus bonus, which sits in the standard range for this type of offer. With a €100 deposit you get a €100 bonus, so you wager €100 + €100 = €200 x 35 = €7,000 in total before you can withdraw. The 200 free spins carry 40x wagering on their winnings.
RTBET Bonuses
18+ Full Terms Apply. Play Responsibly.
512
JVSpinbet
Exclusive BonusCrypto Accepted
100% up to 390€ + 30 free spins
Main details
Bonus type1st deposit bonus+
JVSpinbet matches your deposit 100% up to €390 and adds 30 free spins. Deposit at least €10 to claim it and use bonus code MRGAMBLE when depositing.
Minimum deposit10€
Bonuses & Restrictions
Time limit7 days
Wagering35 x B+
Wagering is 35x on the bonus amount, which sits in the standard range. With a €100 deposit you get a €100 bonus, and €100 x 35 = €3,500 in wagers. The 30 free spins carry 0x wagering on their winnings.
JVSpinbet Bonuses
18+ Full Terms Apply. Play Responsibly.
513
Bet O Bet Casino
Crypto Accepted
100% up to 500€
Main details
Bonus type1st deposit bonus+
Deposit at least €10 to claim this deposit bonus at Bet O Bet Casino. You get a 100% match up to €500 on your deposit. Use bonus code CASINO100 when depositing.
Minimum deposit10€
Bonuses & Restrictions
Time limit21 days
Wagering25 x (D+B)+
The 25x wagering on this offer is below average and applies to both your deposit and bonus. With a €100 deposit at 100%, you get a €100 bonus, so €100 + €100 = €200 x 25 = €5,000 in wagers.
Bet O Bet Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
514
Winnerz Casino
100% up to 500€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Winnerz Casino matches your deposit 100% up to €500 and gives you 100 free spins on Book of Dead, worth €10 in total. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Time limit3 days
Wagering15 x B+
Winnerz Casino gives you a 100% cash bonus with 15x wagering on the bonus amount, which is on the low side. A €100 deposit gives you a €100 bonus, and €100 x 15 = €1,500 in wagers. The 100 free spins carry 15x wagering on their winnings, and max bet while wagering is €5 per round. You have 3 days to clear it.
Winnerz Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
515
Frenzino Casino
Launched 2025Crypto Accepted
100% up to 2000€
Main details
Bonus type1st deposit bonus+
Deposit at least €25 to claim this deposit bonus at Frenzino Casino. You get a 100% match up to €2,000 on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit25€
Bonuses & Restrictions
Max bet5€
Time limit30 days
Wagering35 x (D+B)+
Wagering is 35x on your deposit plus bonus, which sits in the standard range. With a €100 deposit at 100% you get a €100 bonus, and €100 + €100 = €200 x 35 = €7,000 in wagers. The bonus is sticky: you play with it but only withdraw the winnings.
Frenzino Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
516
Allstar Casino
100% up to 1000€
Main details
Bonus type1st deposit bonus+
Allstar Casino matches your deposit 100% up to €1,000, and winnings are capped at €1,500. Deposit at least €10 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit10€
Bonuses & Restrictions
Max bet5€
Time limit7 days
Wagering45 x B+
Wagering is 45x on the bonus amount, which is on the high side. With a €100 deposit you get a €100 bonus, and €100 x 45 = €4,500 in wagers. Max bet while wagering is €5 per round, and you have 7 days to clear it.
Allstar Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
517
Wolfy Casino
Crypto Accepted
100% up to 200€
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Wolfy Casino. You get a 100% match up to €200 on your deposit, and you must use bonus code WELCOME when depositing. Winnings from the bonus are capped at €1,000.
Minimum deposit20€
Bonuses & Restrictions
WageringNo wagering+
The bonus at Wolfy Casino is wager-free, withdraw it any time.
Wolfy Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
518
Wild Tokyo Casino
Crypto Accepted
100% up to 1500€ + 150 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Wild Tokyo Casino. You get a 100% match up to €1,500 plus 150 free spins worth €15 in total on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit10 days
Wagering45 x B+
The €100% bonus has 45x wagering on the bonus amount, which is on the high side. With a €100 deposit you get a €100 bonus, and €100 x 45 = €4,500 in wagers. The 150 free spins carry 45x wagering on their winnings.
Wild Tokyo Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
519
SpinsUP Casino
Crypto Accepted
100% up to 1000€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at SpinsUP Casino, which gives you a 100% match up to €1,000 on your deposit. You also get 100 free spins on Book of the Fallen, worth €10 in total. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit3 days
Wagering40 x B+
The wagering is 40x on the bonus amount, which is above average for this type of offer. With a €100 deposit at 100%, you get a €100 bonus, and €100 x 40 = €4,000 in wagers. The 100 free spins carry 40x wagering on their winnings.
SpinsUP Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
520
Slotexpress Casino
Launched 2025Crypto Accepted
100% up to 500€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Slotexpress Casino matches your deposit 100% up to €500 and gives you 100 free spins on Vikings Go Bezerk, worth €10. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit30 days
Wagering40 x (D+B)+
Wagering on the cash bonus is 40x on your deposit plus bonus, which is on the high side. With a €100 deposit you get a €100 bonus, so €100 + €100 = €200 x 40 = €8,000 in wagers. You have 30 days to clear it. The 100 free spins carry 35x wagering on their winnings.
Slotexpress Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
521
Rapid Casino
100% up to 100€ + 30 free spins
Main details
Bonus type1st deposit bonus+
Rapid Casino matches your deposit 100% up to €100 and adds 30 free spins worth €3 in total on your account. Deposit at least €20 to claim it and use bonus code RAPID when depositing.
Minimum deposit20€
Bonuses & Restrictions
Time limit21 days
Wagering35 x B+
Wagering on the cash bonus is 35x the bonus amount, which sits in the standard range. With a €100 deposit you get a €100 bonus, and €100 x 35 = €3,500 in wagers. You have 21 days to clear it. The 30 free spins carry 35x wagering on their winnings.
Rapid Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
522
Pronto Casino
100% up to 100€
Main details
Bonus type1st deposit bonus+
Pronto Casino matches your deposit 100% up to €100 on your qualifying deposit. Deposit at least €10 to claim it, no bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit10€
Bonuses & Restrictions
Time limit3 days
Wagering30 x B+
Wagering on the cash bonus at Pronto Casino is 30x the bonus amount, which sits in the standard range. With a €100 deposit you get a €100 bonus, and €100 x 30 = €3,000 in wagers. You have 3 days to clear it.
Pronto Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
523
Rabona
Crypto Accepted
100% up to 500€ + 200 free spins
Main details
Bonus type1st deposit bonus+
Rabona matches your deposit 100% up to €500 and gives you 200 free spins. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit30 days
Wagering35 x (D+B)+
Wagering is 35x on your deposit plus bonus, which sits in the standard range. With a €100 deposit you get a €100 bonus, so you wager (€100 + €100) x 35 = €7,000 in total within 30 days. The 200 free spins carry 40x wagering on their winnings.
Rabona Bonuses
18+ Full Terms Apply. Play Responsibly.
524
Polestar Casino
100% up to 500€
Main details
Bonus type1st deposit bonus+
Polestar Casino matches your deposit 100% up to €500 as a deposit bonus. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit10 days
Wagering40 x (D+B)+
Wagering is 40x on your deposit plus bonus, which is on the above average side. With a €100 deposit you get a €100 bonus, so €100 + €100 = €200 x 40 = €8,000 in wagers. You have 10 days to clear it.
Polestar Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
525
Playzee
100% up to 300€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least £20 to claim this deposit bonus from Playzee, which gives you a 100% match up to £300 on your deposit. You also get 100 bonus spins worth £10 in total. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Time limit15 days
Wagering35 x (D+B)+
The wagering on the cash bonus sits in the standard range at 35x on your deposit plus bonus. A £100 deposit gives you a £100 bonus, and £100 + £100 = £200 x 35 = £7,000 in wagers. The 100 bonus spins carry 35x wagering on their winnings.
Playzee Bonuses
18+ Full Terms Apply. Play Responsibly.
526
Playamo
Crypto Accepted
100% up to 100€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Playamo. You get a 100% match up to €100 on your deposit, plus 100 free spins. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Wagering50 x B+
Wagering is on the high side at 50x on the bonus amount. With a €100 deposit you get a €100 bonus, and €100 x 50 = €5,000 in wagers. The 100 free spins carry 50x wagering on their winnings.
Playamo Bonuses
18+ Full Terms Apply. Play Responsibly.
527
Nomini Casino
Crypto Accepted
100% up to 500€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Nomini Casino. You get a 100% match up to €500 plus 100 free spins on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Time limit7 days
Wagering35 x (D+B)+
The wagering is 35x on your deposit plus bonus, which sits in the standard range. A €100 deposit gives you a €100 bonus, and €100 + €100 = €200 x 35 = €7,000 in wagers. The 100 free spins carry 40x wagering on their winnings.
Nomini Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
528
Neospin Casino
Crypto Accepted
100% up to 1000€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Neospin Casino matches your deposit 100% up to €1,000 and gives you 100 free spins on Fruit Million, worth €10 in total. Deposit at least €20 to claim it and use bonus code NEO1 when depositing.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Wagering40 x (D+B)+
Wagering is 40x on your deposit plus bonus, which is on the above average side. With a €100 deposit you get a €100 bonus, so €100 + €100 = €200 x 40 = €8,000 in total wagers. The 100 free spins carry 40x wagering on their winnings, and the max bet while wagering is €5 per round.
Neospin Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
529
Neon54
Crypto Accepted
100% up to 1000€ + 200 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Neon54, which gives you a 100% match up to €1,000 on your deposit. You also get 200 free spins. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit10 days
Wagering35 x (D+B)+
The 35x wagering on this welcome bonus sits in the standard range. With a €100 deposit at 100%, you get a €100 bonus, and €100 + €100 = €200 x 35 = €7,000 in wagers. The 200 free spins carry 40x wagering on their winnings.
Neon54 Bonuses
18+ Full Terms Apply. Play Responsibly.

Sources

Malta Gambling Authority