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 26

Alina Anisimova, Isobel Coughlan

Updated:25.6.2026

576
Azur Slot Casino
Launched 2025
100% up to 300€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Azur Slot Casino matches your deposit 100% up to €300 and adds 100 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
Max bet5€
Time limit5 days
Wagering40 x B+
Wagering on the cash bonus is 40x on 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. The 100 free spins carry 45x wagering on their winnings. Max bet while wagering is €5 per round. You have 5 days to clear it. The bonus is sticky: you play with it but only withdraw the winnings.
Azur Slot Casino Bonuses
18+ Full Terms Apply. Play Responsibly.

577
AllySpin Casino
100% up to 500€ + 50 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at AllySpin Casino. You get a 100% match up to €500 on your deposit plus 50 free spins. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Time limit10 days
Wagering35 x (D+B)+
The 35x wagering on this cash bonus sits in the standard range and applies to both your deposit and bonus. With a €100 deposit at 100%, you get a €100 bonus, so €100 + €100 = €200 x 35 = €7,000 in wagers. The 50 free spins carry 40x wagering on their winnings.
AllySpin Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
578
Asino Casino
100% up to 300€ + 200 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 €300 on your deposit at Asino Casino. Use bonus code BOOST when depositing. You also get 200 free spins worth €20 in total.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Time limit7 days
Wagering40 x B+
The 40x wagering on the bonus is in the standard range. With a €100 deposit at 100%, you get a €100 bonus, and €100 x 40 = €4,000 in wagers. The bonus is sticky: you play with it but only withdraw the winnings. The 200 free spins carry 30x wagering on their winnings.
Asino Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
579
30Bet
100% up to 500€ + 50 free spins
Main details
Bonus type1st deposit bonus+
30Bet matches your deposit 100% up to €500 and gives you 50 free spins on Le Bandit, worth €5 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+
Wagering is 35x on your deposit only, which sits in the standard range. With a €100 deposit you need to wager your €100 deposit 35 times, so €100 x 35 = €3,500 in wagers. You have 30 days to clear it, and the 50 free spins carry 35x wagering on their winnings.
30Bet Bonuses
18+ Full Terms Apply. Play Responsibly.
580
1Red Casino
100% up to 3000€ + 50 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €30 to claim this deposit bonus at 1Red Casino and get a 100% match up to €3,000 on your deposit. You also get 50 free spins worth €5 in total. Use bonus code ONERED when depositing.
Minimum deposit30€
Bonuses & Restrictions
Max bet2€
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, and €100 + €100 = €200 x 40 = €8,000 in wagers. The 50 free spins carry 40x wagering on their winnings.
1Red Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
581
24Casino
100% up to 750€ + 150 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus from 24Casino, which gives you a 100% match up to €750 on your deposit. You also get 150 free spins. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Time limit5 days
Wagering40 x (D+B)+
The wagering on this offer is 40x on your deposit plus bonus, which is above average. With a €100 deposit at 100%, you get a €100 bonus, and 100 + 100 = €200 x 40 = €8,000 in wagers. The 150 free spins carry 40x wagering on their winnings.
24Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
582
Spinbetter
100% up to 300€ + 30 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €10 to claim this deposit bonus at Spinbetter, which gives you a 100% match up to €300 on your deposit. You also get 30 free spins on Wild Cash, worth a total of €3. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit10€
Bonuses & Restrictions
Max bet5€
Time limit7 days
Wagering35 x B+
The 35x wagering on the bonus is in the standard range. With a €100 deposit at 100%, you get a €100 bonus, and €100 x 35 = €3,500 in wagers. The 30 free spins carry 35x wagering on their winnings.
Spinbetter Bonuses
18+ Full Terms Apply. Play Responsibly.
583
Betpanda Casino
100% up to BTC 1
Main details
Bonus type1st deposit bonus+
Deposit at least BTC 10 to claim this deposit bonus at Betpanda Casino. You get a 100% match up to BTC 1 on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit10€
Bonuses & Restrictions
Time limit7 days
Wagering80 x D+
Wagering is on the high side at 80x and it applies to your deposit only. With a ₿100 deposit you get a ₿1 bonus, and a ₿100 deposit means ₿100 x 80 = ₿8,000 in wagers on your deposit only.
Betpanda Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
584
Drakaris Casino
New 2026
100% up to 1000€ + 100 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 €1,000 on your deposit. Use bonus code FIRST when depositing and you get 100 free spins on Griffin's Vault.
Minimum deposit20€
Bonuses & Restrictions
Time limit7 days
Wagering35 x+
The wagering requirement is 35x on the bonus amount, which is in the standard range. With a €100 deposit at 100%, you get a €100 bonus, and €100 x 35 = €3,500 in wagers.
Drakaris Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
585
Slot Lion Casino
New 2026
100% up to 400€
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Slot Lion Casino. You get a 100% match up to €400 on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Time limit48 hours
Wagering25 x (D+B)+
The wagering is 25x on your deposit plus bonus, which is below average. A €100 deposit gives you a €100 bonus, so €100 + €100 = €200 x 25 = €5,000 in wagers.
Slot Lion Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
586
Knight Slots Casino
100% up to 100€ + 50 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €10 to claim this deposit bonus at Knight Slots Casino, which gives you a 100% match up to €100 on your deposit. You also get 50 free spins worth €5 in total. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit10€
Bonuses & Restrictions
Wagering30 x (D+B)+
The wagering requirement is 30x on your deposit plus bonus, which is in the standard range. With a €100 deposit you get a €100 bonus, so 100 + 100 = €200 x 30 = €6,000 in wagers. The 50 free spins carry 60x wagering on their winnings.
Knight Slots Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
587
Campobet
100% up to 500€ + 200 free spins
Main details
Bonus type1st deposit bonus+
Campobet 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
Max bet5€
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 x 35x = €7,000 in wagers. The 200 free spins carry 40x wagering on their winnings, and max bet while wagering is €5 per round.
Campobet Bonuses
18+ Full Terms Apply. Play Responsibly.
588
One Casino
100% up to 100€ + 50 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €10 to claim this deposit bonus at One Casino. You get a 100% match up to €100 on your deposit plus 50 free spins. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit10€
Bonuses & Restrictions
Max bet5€
Wagering25 x B+
The 100% bonus has 25x wagering on the bonus amount, which is below average. With a €100 deposit you get a €100 bonus, and €100 x 25 = €2,500 in wagers. The 50 free spins carry 35x wagering on their winnings.
One Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
589
Betwest Casino
New 2026
100% up to 1000€ + 350 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Betwest Casino. You get a 100% match up to €1,000 on your deposit, plus 350 free spins on Duel at Dawn worth €35 in total. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Time limit10 days
Wagering35 x (D+B)+
The 35x wagering on this 100% match sits in the standard range and applies to both your deposit and bonus together. With a €100 deposit you get a €100 bonus, so you must wager €100 + €100 = €200 x 35 = €7,000 in wagers. The 350 free spins carry 40x wagering on their winnings.
Betwest Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
590
CrazyTower Casino
New 2026
100% up to 3000€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at CrazyTower Casino. You get a 100% match up to €3,000 on your deposit, plus 100 free spins worth €10 in total. No bonus code is needed, the bonus activates on your qualifying deposit, and winnings from the bonus are capped at €30,000.
Minimum deposit20€
Bonuses & Restrictions
Max bet100€
Time limit10 days
Wagering35 x (D+B)+
The 100% bonus at CrazyTower Casino comes with 35x wagering 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.
CrazyTower Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
591
CrownPlay Casino
100% up to 1000€ + 200 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at CrownPlay Casino. You get a 100% match up to €1,000 on your deposit plus 200 free spins, with no bonus code needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Max bet100€
Time limit10 days
Wagering35 x (D+B)+
The wagering is in the standard range at 35x on your deposit plus bonus. With a €100 deposit at 100%, you get a €100 bonus, so €100 + €100 = €200 x 35x = €7,000 in wagers. The 200 free spins carry 40x wagering on their winnings.
CrownPlay Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
592
Fortune Play Casino
100% up to 1000€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus and get 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 100% bonus has 40x wagering on the bonus only, which is above average. With a €100 deposit you get a €100 bonus, and €100 x 40 = €4,000 in wagers. The 100 free spins carry 40x wagering on their winnings.
Fortune Play Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
593
Rollero Casino
Launched 2025
100% up to 1000€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Rollero 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, and no bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit3 days
Wagering40 x B+
The wagering requirement is 40x on the bonus, which is above average. With a €100 deposit you get a €100 bonus, and €100 x 40 = €4,000 in wagers. The 100 free spins carry 40x wagering on their winnings.
Rollero Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
594
Spinko Casino
Launched 2025
100% up to 500€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €25 to claim this deposit bonus at Spinko Casino, where you get a 100% match up to €500 on your deposit. You also get 100 free spins on Wanted Dead or a Wild. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit25€
Bonuses & Restrictions
Time limit10 days
Wagering40 x B+
The wagering is above average at 40x on the bonus amount. With a €100 deposit at 100%, you get a €100 bonus, and €100 x 40 = €4,000 in wagers. The 100 free spins carry 35x wagering on their winnings.
Spinko Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
595
Casabet Casino
100% up to 500€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Casabet Casino matches your deposit 100% up to €500 and gives you 100 free spins on Gates of Casabet 1000. Deposit at least €25 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit25€
Bonuses & Restrictions
Time limit10 days
Wagering40 x B+
Wagering on the cash bonus is 40x the bonus amount, which is on the above average side. With a €100 deposit you get a €100 bonus, and €100 x 40 = €4,000 in wagers. The 100 free spins carry 35x wagering on their winnings.
Casabet Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
596
Immerion Casino
100% up to 1000€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €15 to claim this deposit bonus, which gives you a 100% match up to €1,000 on your deposit. You also get 100 free spins on Sweet Bonanza 1000, worth €10 in total. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit15€
Bonuses & Restrictions
Time limit30 days
Wagering40 x (D+B)+
The 40x wagering on this bonus is above average and applies to both your deposit and your bonus. With a €100 deposit on a 100% match, you get a €100 bonus, and €100 + €100 = €200 x 40 = €8,000 in wagers. The 100 free spins carry 40x wagering on their winnings.
Immerion Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
597
21luckybet
100% up to 200€ + 20 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least £10 to claim this deposit bonus, which gives you a 100% match up to £200 on your deposit. You also get 20 bonus spins worth £2 in total. No bonus code is needed, the bonus activates on your qualifying deposit at 21luckybet.
Minimum deposit10€
Bonuses & Restrictions
Time limit30 days
Wagering50 x B+
The wagering on the cash bonus 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 20 bonus spins carry 0x wagering, so anything you win from them is in cash.
21luckybet Bonuses
18+ Full Terms Apply. Play Responsibly.
598
31Bet Casino
100% up to 1000€
Main details
Bonus type1st deposit bonus+
Deposit at least €10 to claim this deposit bonus at 31Bet Casino. You get a 100% match up to €1,000 on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit10€
Bonuses & Restrictions
Time limit30 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 free spin winnings have 0x wagering, so you can withdraw them straight away.
31Bet Casino Bonuses
18+ Full Terms Apply. Play Responsibly.

Sources

Malta Gambling Authority