Dive into the Deep End with 300% Casino Bonuses
A 300% casino bonus is a match bonus for new players: the casino adds 300% to your first deposit, so a $100 deposit turns into $400 in your account. The minimum deposit is usually around $20–25, and many offers come with free spins on top. Before you claim, check the terms: a 300% bonus typically carries a wagering requirement of 30x or more, and some casinos cap the maximum cashout. Below is the list of online casinos with a 300% bonus, updated regularly using our own methodology.
SlotsUp Recommended Casino Bonuses
Affiliate Disclosure
325% Up to 1500 USD + 175 Free Spins
Wagering
×0 / ×20 for FS
Min Deposit
10 USD
Max Bet
3 USD
You must be 18 or older to visit MilkyWay.
Up to 0 USD
Wagering
×40 / ×40 for FS
Min Deposit
25 USD
You must be 18 or older to visit Supernova.
250% Up to 5000 USD + 30 Free Spins
Wagering
×0 / ×60 for FS
Min Deposit
20 USD
Max Cashout
1100 USD
You must be 18 or older to visit Grand Bay.
300% Up to 7000 USD
Wagering
×0 / ×0 for FS
Min Deposit
20 USD
Max Cashout
1000 USD
You must be 18 or older to visit Jackpot Wheel.
Up to 5500 USD + 100 Free Spins
Wagering
×35 / ×35 for FS
Min Deposit
25 USD
You must be 18 or older to visit BoVegas.
Up to 0 USD + 75 Free Spins
Wagering
×50 / ×50 for FS
Max Bet
10 USD
Max Cashout
2 USD
You must be 18 or older to visit BuzzLuck.
Up to 0 USD
Wagering
×40 / ×40 for FS
Min Deposit
25 USD
You must be 18 or older to visit Golden Lion.
Up to 0 USD
Wagering
×35 / ×35 for FS
Min Deposit
25 USD
Max Bet
10 USD
You must be 18 or older to visit Rich Palms.
Up to 0 USD
Wagering
×15 / ×15 for FS
Min Deposit
30 USD
You must be 18 or older to visit Cool Cat Casino.
Up to 1000 USD + 200 Free Spins
You must be 18 or older to visit A Big Candy.
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