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 3

Alina Anisimova, Isobel Coughlan

Updated:25.6.2026

67
SlotOwl Casino
New 2026
100% up to $500
Main details
Bonus type1st deposit bonus
Minimum deposit$20+
Deposit at least €20 to claim this deposit bonus at SlotOwl Casino. You get a 100% match up to €500 on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit, and winnings from the bonus are capped at €2,500.
Bonuses & Restrictions
Max bet$5
Time limit48 hours
Wagering25 x (D+B)+
The 25x wagering on this 100% match is below average and applies to both your deposit and bonus. A €100 deposit gives you a €100 bonus, so €100 + €100 = €200 x 25 = €5,000 in wagers.
Not Available
SlotOwl Casino Bonuses
18+ Full Terms Apply. Play Responsibly.

68
Casinova Casino
100% up to $500 + 200 free spins
Main details
Bonus type1st deposit bonus
Minimum deposit$20+
Deposit at least €20 to claim this deposit bonus at Casinova Casino, which gives you a 100% match up to €500 on your deposit. You also get 200 free spins worth €20 in total, and no bonus code is needed, the bonus activates on your qualifying deposit.
Bonuses & Restrictions
Max bet$5
Time limit10 days
Wagering35 x (D+B)+
The wagering on the cash bonus is in the standard range at 35x on both your deposit and bonus. With a €100 deposit 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.
Not Available
Casinova Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
69
The Slotz Casino
Launched 2025
100% up to $800 + 300 free spins
Main details
Bonus type1st deposit bonus
Minimum deposit$20+
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.
Bonuses & Restrictions
Max bet$5
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.
Not Available
The Slotz Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
70
FatPirate Casino
100% up to $500 + 200 free spins
Main details
Bonus type1st deposit bonus
Minimum deposit$20+
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.
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.
Not Available
FatPirate Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
71
Moana Casino
Launched 2025
100% up to $2000
Main details
Bonus type1st deposit bonus
Minimum deposit$25+
Deposit at least €25 to claim this deposit bonus, which gives you a 100% match up to €2,000 on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Bonuses & Restrictions
Time limit30 days
Wagering30 x (D+B)+
Wagering is 30x on your deposit plus bonus, which sits in the standard range. With a €100 deposit and a 100% match you get a €100 bonus, so €100 + €100 = €200 x 30 = €6,000 in wagers.
Not Available
Moana Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
72
Katsubet
100% up to $400 + 100 free spins
Main details
Bonus type1st deposit bonus
Minimum deposit$20+
Deposit at least €20 to claim this deposit bonus, which gives you a 100% match up to €400 on your deposit. You also get 100 free spins, and no bonus code is needed, the bonus activates on your qualifying deposit. This bonus is for Canadian players only.
Bonuses & Restrictions
Max bet$1
Time limit14 days
Wagering45 x (D+B)+
The wagering is 45x on the high side and it applies to both your deposit and your bonus. With a €100 deposit you get a €100 bonus, so €100 + €100 = €200 x 45 = €9,000 in wagers. The 100 free spins carry 50x wagering on their winnings.
Not Available
Katsubet Bonuses
18+ Full Terms Apply. Play Responsibly.
73
GalacticWins Casino
100% up to $500 + 50 free spins
Main details
Bonus type1st deposit bonus
Minimum deposit$20+
Deposit at least €20 to claim this deposit bonus at GalacticWins Casino, which gives you a 100% match up to €500 on your deposit. You also get 50 free spins, and no bonus code is needed, the bonus activates on your qualifying deposit. Winnings from the bonus are capped at €1,000.
Bonuses & Restrictions
Time limit7 days
Wagering40 x (D+B)+
The wagering on the cash bonus is 40x your deposit plus bonus, which is above average. A €100 deposit gives you a €100 bonus, and €100 + €100 = €200 x 40 = €8,000 in wagers. The 50 free spins carry 0x wagering on their winnings.
Not Available
GalacticWins Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
74
bCasino
Exclusive Bonus
100% up to $25
Main details
Bonus type1st deposit bonus
Minimum deposit$5+
bCasino matches your deposit 100% up to €25 as a straightforward deposit bonus. Deposit at least €5 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Bonuses & Restrictions
Wagering50 x B+
Wagering on the cash bonus is 50x the bonus amount, which is on the high side. With a €100 deposit at 100%, the bonus you work with in the example is capped at €25, so you need to wager €25 x 50 = €1,250.
Not Available
bCasino Bonuses
18+ Full Terms Apply. Play Responsibly.
75
JeetCity Casino
100% up to $250 + 100 free spins
Main details
Bonus type1st deposit bonus
Minimum deposit$20+
Deposit at least €20 to claim this deposit bonus from JeetCity Casino, which gives you a 100% match up to €250 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.
Bonuses & Restrictions
Max bet$1
Time limit5 days
Wagering40 x (D+B)+
The wagering on this bonus is 40x on your deposit plus bonus, which is above average. With a €100 deposit 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.
Not Available
JeetCity Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
76
Felix Spin Casino
100% up to $250 + 150 free spins
Main details
Bonus type1st deposit bonus
Minimum deposit$20+
Felix Spin Casino matches your deposit 100% up to €250 and gives you 150 free spins worth €15 in total. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Bonuses & Restrictions
Time limit7 days
Wagering35 x (D+B)+
Wagering is 35x on your deposit plus bonus, which sits in the standard range. A €100 deposit gives you a €100 bonus, so €100 + €100 = €200 x 35 = €7,000 in wagers. You have 7 days to clear it. The 150 free spins carry 35x wagering on their winnings.
Not Available
Felix Spin Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
77
Casinomax
100% up to $3250
Main details
Bonus type1st deposit bonus
Minimum deposit$35+
Deposit at least €35 to claim this deposit bonus at Casinomax. You get a 100% match up to €3,250 on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Bonuses & Restrictions
Max bet$10
Wagering40 x B+
The wagering requirement is 40x on the bonus, which is above average. With a €100 deposit at 100%, you get a €100 bonus, and €100 x 40 = €4,000 in wagers.
Not Available
Casinomax Bonuses
18+ Full Terms Apply. Play Responsibly.
78
Bankonbet Casino
100% up to $500 + 200 free spins
Main details
Bonus type1st deposit bonus
Minimum deposit$20+
Deposit at least €20 to claim this deposit bonus at Bankonbet Casino, which gives you a 100% match up to €500 on your deposit. You also get 200 bonus spins worth €20 in total, and no bonus code is needed, the bonus activates on your qualifying deposit.
Bonuses & Restrictions
Max bet$5
Time limit10 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, so €100 + €100 = €200 x 35 = €7,000 in wagers. The 200 free spins carry 40x wagering on their winnings.
Not Available
Bankonbet Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
79
21luckybet
100% up to $200 + 20 free spins
Main details
Bonus type1st deposit bonus
Minimum deposit$10+
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.
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.
Not Available
21luckybet Bonuses
18+ Full Terms Apply. Play Responsibly.
80
Slot Lion Casino
New 2026
100% up to $400
Main details
Bonus type1st deposit bonus
Bonus value100%
Maximum bonus$400
Bonuses & Restrictions
Minimum deposit$20
Wagering requirement25 x (D+B)
Maximum bet$5
Available for withdrawalYes
Expiry time48 hours
Not Available
Slot Lion Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
81
CrazyTower Casino
New 2026
100% up to $3000 + 100 free spins
Main details
Bonus type1st deposit bonus
Bonus value100%
Maximum bonus$3000
Freespins100
Bonuses & Restrictions
Minimum deposit20€
Wagering requirement35 x (D+B)
Maximum bet$100
Maximum bonus withdrawal$30000
Available for withdrawalYes
Expiry time10 days
Not Available
CrazyTower Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
82
SlotMafia Casino
100% up to $5000 + 200 free spins
Main details
Bonus type1st deposit bonus
Bonus value100%
Maximum bonus$5000
Freespins200
Bonuses & Restrictions
Minimum deposit$30
Wagering requirement50 x B
Available for withdrawalYes
Not Available
SlotMafia Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
83
Spirit Casino
100% up to $2000 + 200 free spins
Main details
Bonus type1st deposit bonus
Bonus value100%
Maximum bonus$2000
Freespins200
Bonuses & Restrictions
Minimum deposit$30
Wagering requirement40 x B
Available for withdrawalYes
Not Available
18+ Full Terms Apply. Play Responsibly.
84
Casino Crypto
New 2026
200 free spins
Main details
Bonus type1st deposit bonus
Minimum deposit$30+
Deposit at least €30 to claim this deposit bonus at Casino Crypto. You get 200 free spins worth €40 in total with your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Bonuses & Restrictions
Time limit7 days
Wagering40 x B+
The free spin winnings carry 40x wagering before you can withdraw.
Not Available
Casino Crypto Bonuses
18+ Full Terms Apply. Play Responsibly.

Sources

Malta Gambling Authority