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 2

Alina Anisimova, Isobel Coughlan

Updated:25.6.2026

38
SlotOwl Casino
New Casino

100% up to $500

1st deposit bonus
Main details

Bonus value 100%

Maximum bonus $500
Bonuses & Restrictions

Minimum deposit $20

Wagering requirement 25 x (D+B)

Maximum bet $5

Maximum bonus withdrawal $2500

Expiry time 48 hours
Not Available

SlotOwl Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
39
WinMega Casino
New Casino

100% up to $200 + 25 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Deposit at least €20 to claim this deposit bonus at WinMega Casino, which gives you a 100% match up to €200 on your deposit. Use bonus code WELCOME200 when depositing and you get 25 free spins worth €2.50 in total.

Wagering 40 x (D+B) +

The wagering requirement 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 25 free spins carry 40x wagering on their winnings.
Bonuses & Restrictions

Max bet $12

Time limit 21 days
Not Available

WinMega Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
40
Winaday Casino

100% up to $100

1st deposit bonus
Main details

Minimum deposit $25 +

Deposit at least €25 to claim this deposit bonus at Winaday Casino, which gives you a 100% match up to €100 on your deposit. Use bonus code WELCOME1 when depositing.

Wagering 25 x +

The 25x wagering on this welcome bonus is below average for this type of offer. With a €100 deposit you get a €100 bonus, and €100 x 25 = €2,500 in wagers.
Bonuses & Restrictions

Time limit 90 days
Not Available

Winaday Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
41
Wildsino Casino

100% up to $500 + 200 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Deposit at least €20 to claim this deposit bonus at Wildsino Casino. You get a 100% match up to €500 plus 200 free spins worth €20 in total on your deposit.

Wagering 40 x (D+B) +

The wagering requirement 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 200 free spins carry 35x wagering on their winnings.
Bonuses & Restrictions

Time limit 10 days
Not Available

Wildsino Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
42
Valttikasino
New Casino

100% up to $500 + 30 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Valttikasino matches your deposit 100% up to €500 and gives you 30 free spins on Bigger Bass Splash, worth €3. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 40 x B +

Wagering on the cash bonus is 40x on the bonus amount, which is on the above average side. A €100 deposit gives you a €100 bonus, and €100 x 40 = €4,000 in wagers. The 30 free spins carry 40x wagering on their winnings. Max bet while wagering is €5 per round. You have 30 days to clear it.
Bonuses & Restrictions

Max bet $5

Time limit 30 days
Not Available

Valttikasino Bonuses

18+ Full Terms Apply. Play Responsibly.
43
Tuuri Casino
New Casino

100% up to $300 + 40 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Tuuri Casino matches your deposit 100% up to €300 and gives you 40 free spins worth €4 in total on your qualifying deposit. Deposit at least €20 to claim it, no bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 40 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. The 40 free spins carry 40x wagering on their winnings.
Bonuses & Restrictions
Not Available

Tuuri Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
44
The Slotz Casino
New Casino

100% up to $800 + 300 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

The Slotz Casino matches your deposit 100% up to €800 and adds 300 free spins. This bonus is for players only. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 30 x B +

Wagering is 30x on 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. The 300 free spins carry 30x wagering on their winnings. Max bet while wagering is €5 per round, and you have 10 days to clear it.
Bonuses & Restrictions

Max bet $5

Time limit 10 days
Not Available

The Slotz Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
45
Spinoli Casino

100% up to $200 + 200 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Deposit at least €20 to claim this deposit bonus at Spinoli Casino. You get a 100% match up to €200 on your deposit, plus 200 free spins worth €20 in total. Use bonus code SPINGOLD200 when depositing.

Wagering 40 x (D+B) +

The wagering is 40x on 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 200 free spins carry 40x wagering on their winnings.
Bonuses & Restrictions

Time limit 21 days
Not Available

Spinoli Casino Bonuses

18+ Full Terms Apply. Play Responsibly.

46
Shotz Casino

100% up to $500 + 200 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Shotz 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.

Wagering 45 x (D+B) +

Wagering on the cash bonus is 45x 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 45 = €9,000 in wagers. The 200 free spins carry 30x wagering on their winnings, and max bet while wagering is €5 per round.
Bonuses & Restrictions

Max bet $5
Not Available

Shotz Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
47
Saletti Kasino

100% up to $500 + 50 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Saletti Kasino matches your deposit 100% up to €500 and gives you 50 free spins worth €5.00 in total. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 40 x (D+B) +

Wagering is 40x on your deposit plus bonus, which is on the above average side. A €100 deposit gives you a €100 bonus, so you wager €100 + €100 = €200 x 40 = €8,000 in total bets. The 50 free spins carry 40x wagering on their winnings, max bet while wagering is €5 per round, and you have 30 days to clear it.
Bonuses & Restrictions

Max bet $5

Time limit 30 days
Not Available

Saletti Kasino Bonuses

18+ Full Terms Apply. Play Responsibly.
48
Rollchain Casino
New Casino

100% up to $100000

1st deposit bonus
Main details

Minimum deposit $20 +

Rollchain Casino matches your deposit 100% up to €100,000. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 35 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: €100 x 35 = €3,500 in total wagers. Max bet while wagering is €10 per round, and you have 7 days to clear it.
Bonuses & Restrictions

Max bet $10

Time limit 7 days
Not Available

Rollchain Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
49
Ritzo Casino
Exclusive Bonus

100% up to $250

1st deposit bonus
Main details

Minimum deposit $20 +

Ritzo Casino matches your deposit 100% up to €250 on this deposit bonus. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 45 x B +

Ritzo Casino sets wagering at 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. You have 7 days to clear it.
Bonuses & Restrictions

Time limit 7 days
Not Available

Ritzo Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
50
Pokobet
New Casino

100% up to $500 + 50 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Pokobet matches your deposit 100% up to €500 and adds 50 free spins. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 35 x (D+B) +

Wagering on the cash bonus at Pokobet 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, and the bonus is sticky, you play with it but only withdraw the winnings. The 50 free spins carry 40x wagering on their winnings, and max bet while wagering is €5 per round.
Bonuses & Restrictions

Max bet $5

Time limit 7 days
Not Available

Pokobet Bonuses

18+ Full Terms Apply. Play Responsibly.
51
Olympusbet Casino

100% up to $500 + 100 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Deposit at least €20 to claim this deposit bonus at Olympusbet Casino, which gives you a 100% match up to €500 on your deposit. You also get 100 free spins. No bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 40 x (D+B) +

The wagering is 40x on 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 100 free spins carry 40x wagering on their winnings.
Bonuses & Restrictions

Time limit 21 days
Not Available

Olympusbet Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
52
Mogobet Casino

100% up to $50 + 20 free spins

1st deposit bonus
Main details

Minimum deposit $10 +

Deposit at least £10 to claim this deposit bonus from Mogobet Casino, which gives you a 100% match up to £50 on your deposit. You also get 20 bonus spins on Book of Dead, worth £2 in total. No bonus code is needed, the bonus activates on your qualifying deposit, and this bonus is for UK players only.

Wagering 10 x B +

Wagering is on the low side at 10x on the bonus only. With a £100 deposit and a 100% match, you get a £50 bonus (the maximum), and £50 x 10 = £500 in wagers. The 20 bonus spins carry 10x wagering on their winnings.
Bonuses & Restrictions

Time limit 30 days
Not Available

Mogobet Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
53
Mammona Kasino

100% up to $500 + 50 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Mammona Kasino matches your deposit 100% up to €500 and gives you 50 free spins worth €5. Deposit at least €20 to claim it, no bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 40 x (D+B) +

Wagering is 40x on your deposit plus bonus, which sits in the above average range. With a €100 deposit you get a €100 bonus, so €100 + €100 = €200 x 40 = €8,000 in wagers. The 50 free spins carry 40x wagering on their winnings, you have 30 days to clear it, and max bet while wagering is €5 per round.
Bonuses & Restrictions

Max bet $5

Time limit 30 days
Not Available

Mammona Kasino Bonuses

18+ Full Terms Apply. Play Responsibly.
54
LuckyKoala Casino

100% up to $1000 + 150 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Deposit at least €20 to claim this deposit bonus, which gives you a 100% match up to €1,000 on your deposit at LuckyKoala Casino. Use bonus code 1000KOALA when depositing, and you get 150 free spins worth €15 in total.

Wagering 35 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 150 free spins carry 35x wagering on their winnings.
Bonuses & Restrictions

Time limit 14 days
Not Available

LuckyKoala Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
55
Lucky Twice Casino

100% up to $1000 + 100 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Lucky Twice Casino matches your deposit 100% up to €1,000 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.

Wagering 40 x B +

Wagering 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. You have 7 days to clear it. The 100 free spins carry 40x wagering on their winnings.
Bonuses & Restrictions

Time limit 7 days
Not Available

Lucky Twice Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
56
Lempi Kasino

100% up to $400 + 50 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Lempi Kasino matches your deposit 100% up to €400 and gives you 50 free spins worth €5 in total on top. Deposit at least €20 to claim it. No bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 40 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, and €200 x 40 = €8,000 in wagers. The 50 free spins carry 40x wagering on their winnings.
Bonuses & Restrictions
Not Available

Lempi Kasino Bonuses

18+ Full Terms Apply. Play Responsibly.
57
Kunkku Kasino

100% up to $500 + 50 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Kunkku Kasino matches your deposit 100% up to €500 and gives you 50 free spins worth €5.00 in total (€0.10 per spin). Deposit at least €20 to claim it, no bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 40 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. The 50 free spins carry 40x wagering on their winnings, and max bet while wagering is €5 per round. You have 30 days to clear it.
Bonuses & Restrictions

Max bet $5

Time limit 30 days
Not Available

Kunkku Kasino Bonuses

18+ Full Terms Apply. Play Responsibly.
58
Katsubet
Exclusive Bonus

100% up to $400 + 100 free spins

1st deposit bonus
Main details

Minimum deposit $20 +

Deposit at least €20 to claim this deposit bonus from Katsubet, which gives you a 100% match up to €400 on your deposit. You also get 100 free spins. No bonus code is needed, the bonus activates on your qualifying deposit.

Wagering 45 x (D+B) +

The €100% match has 45x wagering on the high side and it applies to both your deposit and bonus. A €100 deposit gives you a €100 bonus, and €100 + €100 = €200 x 45 = €9,000 in wagers. The 100 free spins carry 50x wagering on their winnings.
Bonuses & Restrictions

Max bet $1

Time limit 14 days
Not Available

Katsubet Bonuses

18+ Full Terms Apply. Play Responsibly.
59
JeetCity Casino

100% up to $250 + 100 free spins

1st deposit bonus
Main details

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.

Wagering 40 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.
Bonuses & Restrictions

Max bet $1

Time limit 5 days
Not Available

JeetCity Casino Bonuses

18+ Full Terms Apply. Play Responsibly.
60
Jackpotter Casino
New Casino

100% up to $1000

1st deposit bonus
Main details

Minimum deposit $10 +

Deposit at least €10 to claim this deposit bonus at Jackpotter 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. Winnings from the bonus are capped at €1,000.

Wagering 35 x B +

The wagering requirement 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 35 = €3,500 in wagers.
Bonuses & Restrictions

Time limit 1 day
Not Available

Jackpotter Casino Bonuses

18+ Full Terms Apply. Play Responsibly.

Sources

Malta Gambling Authority