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 12

Alina Anisimova, Isobel Coughlan

Updated:25.6.2026

254
SlotMafia Casino
Crypto Accepted
100% up to 5000€ + 200 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €30 to claim this deposit bonus, which gives you a 100% match up to €5,000 on your deposit. You also get 200 free spins on Gates of Olympus Super Scatter. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit30€
Bonuses & Restrictions
Wagering50 x B+
Wagering is 50x on the bonus only, which is on the high side. With a €100 deposit at 100%, you get a €100 bonus, and €100 x 50x = €5,000 in wagers.
SlotMafia Casino Bonuses
18+ Full Terms Apply. Play Responsibly.

255
Billy Billion
100% up to 5000€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Billy Billion matches your deposit 100% up to €5,000 and gives you 100 free spins worth €10 in total. Deposit at least €20 to claim it and use bonus code BILLY1 when depositing.
Minimum deposit20€
Bonuses & Restrictions
Time limit5 days
Wagering40 x (D+B)+
Wagering on the cash bonus 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. The 100 free spins carry 40x wagering on their winnings. You have 5 days to clear it.
Billy Billion Bonuses
18+ Full Terms Apply. Play Responsibly.
256
Casinobello
Crypto Accepted
100% up to 500€ + 150 free spins
Main details
Bonus type1st deposit bonus+
Casinobello matches your deposit 100% up to €500 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.
Minimum deposit20€
Bonuses & Restrictions
Time limit5 days
Wagering40 x B+
Wagering on the Casinobello welcome 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. You have 5 days to clear it. The 150 free spins carry 40x wagering on their winnings.
Casinobello Bonuses
18+ Full Terms Apply. Play Responsibly.
257
Slot Hunter Casino
100% up to 1000€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Slot Hunter Casino. You get a 100% match up to €1,000 on your deposit, plus 100 free spins. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit7 days
Wagering50 x B+
The wagering is on the high side at 50x on the bonus amount. With a €100 deposit at 100%, you get a €100 bonus, and €100 x 50 = €5,000 in wagers. The 100 free spins carry 50x wagering on their winnings.
Slot Hunter Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
258
Spinsy Casino
Crypto Accepted
100% up to 500€ + 200 free spins
Main details
Bonus type1st deposit bonus+
Spinsy Casino matches your deposit 100% up to €500 and gives you 200 free spins on top. 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
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 you wager €100 + €100 = €200 x 35 = €7,000 in total bets. The 200 free spins carry 40x wagering on their winnings, which is also in the standard range.
Spinsy Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
259
VegasNova Casino
Launched 2025Crypto Accepted
100% up to 2000€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus. You get a 100% match up to €2,000 on your deposit, plus 100 free spins worth €10 in total. Use bonus code WELCOME when depositing. This bonus is for Canadian players only.
Minimum deposit20€
Bonuses & Restrictions
Time limit15 days
Wagering35 x B+
The wagering requirement is 35x on the bonus only, which sits in the standard range. With a €100 deposit at 100% you get a €100 bonus, and €100 x 35 = €3,500 in wagers. The 100 free spins carry 35x wagering on their winnings.
VegasNova Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
260
Blazebet
Crypto Accepted
100% up to 1000€ + 50 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Blazebet. You get a 100% match up to €1,000 on your deposit, plus 50 free spins on Wild Tiger 2. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Wagering20 x (D+B)+
The 100% match at Blazebet has 20x wagering on your deposit plus bonus, which is on the low side. With a €100 deposit you get a €100 bonus, and €100 + €100 = €200 x 20x = €4,000 in wagers. The 50 free spins carry 20x wagering on their winnings.
Blazebet Bonuses
18+ Full Terms Apply. Play Responsibly.
261
SpinIt Casino
Exclusive Bonus
100% up to 500€ + 250 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 €500 on your deposit at SpinIt Casino. You also get 250 free spins worth €25 in total. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit10 days
Wagering35 x B+
Wagering is 35x on the bonus only, which sits in the standard range. With a €100 deposit at 100%, a €100 bonus applies, and €100 x 35 = €3,500 in wagers. The 250 free spins carry 40x wagering on their winnings.
SpinIt Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
262
Roman Casino
Crypto Accepted
100% up to 500€ + 150 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €15 to claim this deposit bonus at Roman Casino, which gives you a 100% match up to €500 on your deposit. You also get 150 free spins worth €15 in total. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit15€
Bonuses & Restrictions
Time limit7 days
Wagering35 x B+
The wagering on the cash bonus 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 150 free spins carry 35x wagering on their winnings.
Roman Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
263
Spinorhino Casino
New 2026Crypto Accepted
100% up to 500€ + 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 €500 on your deposit. You also get 100 free spins on Chaos Crew 3 worth €10 in total. No bonus code is needed, the bonus activates on your qualifying deposit, and winnings from the bonus are capped at €5,000.
Minimum deposit20€
Bonuses & Restrictions
Time limit15 days
Wagering40 x B+
The wagering requirement is 40x on the bonus only, which is above average. With a €100 deposit and a 100% match you get a €100 bonus, and €100 x 40 = €4,000 in wagers. The 100 free spins carry 40x wagering on their winnings.
Spinorhino Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
264
Lumi Casino
100% up to 300€ + 50 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. You also get 50 free spins worth €5 in total. No bonus code is needed, the bonus activates on your qualifying deposit at Lumi Casino.
Minimum deposit20€
Bonuses & Restrictions
Wagering40 x (D+B)+
The wagering on this offer 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 40x wagering on their winnings.
Lumi Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
265
Trickz Casino
100% up to 500€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Trickz Casino matches your deposit 100% up to €500 and gives you 100 free spins on Sweet Bonanza, 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€
Time limit7 days
Wagering25 x (D+B)+
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 25x = €5,000 in wagers. The 100 free spins carry 20x wagering on their winnings. Max bet while wagering is €5 per round, and you have 7 days to clear it.
Trickz Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
266
Tsars Casino
Crypto Accepted
100% up to 300€ + 100 free spins
Main details
Bonus type1st deposit bonus+
Tsars Casino matches your deposit 100% up to €300 and gives you 100 free spins, and winnings are capped at €10,000. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Wagering30 x (D+B)+
Wagering on the cash bonus is 30x 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 = €200 x 30 = €6,000 in total bets before you can withdraw. The 100 free spins carry 35x wagering on their winnings.
Tsars Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
267
PowBet
Crypto Accepted
100% up to 500€ + 200 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €10 to claim this deposit bonus from PowBet, which gives you a 100% match up to €500 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 deposit10€
Bonuses & Restrictions
Time limit10 days
Wagering40 x B+
The wagering on the cash bonus is 40x on the bonus amount, which is above average. With a €100 deposit at 100%, you get a €100 bonus, and €100 x 40 = €4,000 in wagers. The 200 free spins carry 40x wagering on their winnings.
PowBet Bonuses
18+ Full Terms Apply. Play Responsibly.
268
OhMySpins Casino
Crypto Accepted
100% up to 500€ + 200 free spins
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at OhMySpins Casino. You get a 100% match up to €500 on your deposit, plus 200 free spins worth €20 in total. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Wagering35 x (D+B)+
The wagering on the cash bonus sits in the standard range at 35x your deposit plus bonus. 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.
OhMySpins Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
269
Mr Bet
Crypto Accepted
100% up to 300€
Main details
Bonus type1st deposit bonus+
Deposit at least €20 to claim this deposit bonus at Mr Bet. You get a 100% match up to €300 on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Max bet5€
Time limit5 days
Wagering40 x B+
The wagering requirement is 40x on the bonus amount, which is above average. With a 100% match, a €100 deposit gives you a €100 bonus, and €100 x 40 = €4,000 in wagers.
Mr Bet Bonuses
18+ Full Terms Apply. Play Responsibly.
270
PuppyBet Casino
Launched 2025Crypto Accepted
100% up to 500€ + 50 free spins
Main details
Bonus type1st deposit bonus+
PuppyBet Casino matches your deposit 100% up to €500 and gives you 50 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 limit14 days
Wagering35 x B+
Wagering is 35x on the bonus amount, which sits in the standard range. With a €100 deposit at 100%, you get a €100 bonus, and €100 x 35x = €3,500 in wagers. The 50 free spins carry 35x wagering on their winnings. Max bet while wagering is €5 per round, and you have 14 days to clear it.
PuppyBet Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
271
Mafia Casino
Launched 2025Crypto Accepted
100% up to 500€ + 200 free spins
Main details
Bonus type1st deposit bonus+
Mafia Casino matches your deposit 100% up to €500 and gives you 200 free spins. Deposit at least €30 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit30€
Bonuses & Restrictions
Time limit10 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 x 35x = €7,000 in wagers. You have 10 days to clear it. The 200 free spins carry 40x wagering on their winnings.
Mafia Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
272
HolyLuck Casino
Launched 2025Crypto Accepted
100% up to 500€ + 100 free spins
Main details
Bonus type1st deposit bonus+
HolyLuck Casino matches your deposit 100% up to €500 and gives you 100 free spins with your 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 limit15 days
Wagering40 x B+
Wagering is 40x on the bonus amount, which sits in the above average range. With a €100 deposit you get a €100 bonus, and €100 x 40 = €4,000 in wagers. You have 15 days to clear it. The 100 free spins carry 40x wagering on their winnings.
HolyLuck Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
273
Bulletz Casino
Crypto Accepted
100% up to 200€ + 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 €200 on your deposit. You also get 100 free spins worth €10 in total. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit3 days
Wagering25 x (D+B)+
The wagering is 25x on your deposit plus bonus, which is below average. With a €100 deposit, you get a €100 bonus, then €100 + €100 = €200 x 25 = €5,000 in wagers. The 100 free spins carry 25x wagering on their winnings.
Bulletz Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
274
BassBet Casino
Crypto Accepted
100% up to 500€ + 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 €500 on your deposit. You also get 200 free spins worth €0.10 each for a total of €20 in spin value. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit20€
Bonuses & Restrictions
Time limit10 days
Wagering35 x B+
The 35x wagering on the bonus is in the standard range. With a €100 deposit at 100%, a €100 bonus is added, and €100 x 35 = €3,500 in wagers. The 200 free spins carry 40x wagering on their winnings.
BassBet Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
275
TrueLuck Casino
Launched 2025Crypto Accepted
100% up to 500€ + 100 free spins
Main details
Bonus type1st deposit bonus+
TrueLuck 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
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 40x wagering on their winnings.
TrueLuck Casino Bonuses
18+ Full Terms Apply. Play Responsibly.
276
Rocketbet Casino
New 2026Crypto Accepted
100% up to $200
Main details
Bonus type1st deposit bonus+
Deposit at least $10 to claim this deposit bonus at Rocketbet Casino. You get a 100% match up to $200 on your deposit. No bonus code is needed, the bonus activates on your qualifying deposit.
Minimum deposit$10
Bonuses & Restrictions
Max bet$5
Wagering40 x (D+B)+
The wagering requirement here is 40x on both your deposit and bonus, which is above average. With a €100 deposit you get a €100 bonus, so €100 + €100 = €200 x 40 = €8,000 in wagers.
Rocketbet Casino Bonuses
18+ Full Terms Apply. Play Responsibly.

Sources

Malta Gambling Authority