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Online Casinos let you play for real money, and if you get lucky they pay out real cash winnings!
Each brand offers new players their own variation of a welcome bonus, but which one is the best?
We’ve handpicked the best Real Money Online Casinos bonuses available this March, 2025.
Read on to learn more about each of the top picks and find out exactly what you can get your hands on.
Top 5 Online Casino Promo Codes for March 2025
We’ve chosen the best US Online Casino sites to sign up to this month if you’re looking for freeplay bonuses and extra rewards.
You can check the table and then get the welcome offer you like the most by clicking on the “Claim Now” button.
From there, you will be safely redirected to the casino’s registration page and the bonus will be automatically applied.
| Casino | Welcome Bonus | Claim Now |
| BetMGM | Claim $25 Bonus & Up To $1,000 Deposit Match | Claim Now |
| Caesar’s Palace | Claim $10 Deposit Match & $1,000 Deposit Match | Claim Now |
| Hard Rock | Claim 500 Free Spins Plus $1,000 Deposit Match | Claim Now |
| PlayStar | Claim 500 Free Spins Plus $500 Deposit Match | Claim Now |
| Stardust | Claim $100 Deposit Match Plus 225 Spins | Claim Now |
BetMGM – Claim $25 Bonus & Up To $1,000 Deposit Match
When you join BetMGM Casino this March, you will get a $25 Casino Bonus just for registering at the site.
Make a deposit of at least $10, and you’ll unlock the second part of the welcome offer – a 100% deposit match up to $1,000.
The $25 Casino Bonus is enough to get you 100+ spins on popular slots like 88 Fortunes Jackpot Festival, Cats, and Thunderstruck Gold Blitz Extreme.
Among the 3,000+ BetMGM Casino games, we’re huge fans of the exclusive titles you won’t find anywhere else.
Such picks include Roaring Cash Link & Win, The Wizard of Oz Over the Rainbow, and MGM Grand Millions.
Caesar’s Palace Casino – Get A $10 Deposit Match Plus $1,000 Deposit Match
This brand ranks high on any list and any month because it’s a top spot in every sense.
Join the site this March, and you can grab the Caesar’s Palace welcome offer of $10 FOR FREE.
Complete your first deposit of at least $10 to get a 100% up to $1,000 match plus 2,500 Reward Credits when they wager $25.
Of course, Caesars Rewards are there to reward your loyalty to the brand with extra benefits throughout the month.
Another of its main pros is the rich game selection of slots, progressive jackpots, live dealer games, and even some exclusive titles (Caesars Cleopatra, Caesars Fortune, etc.).
Most of these slots have minimum bets of $0.20, so you can spin their reels hundreds of times with the welcome bonus funds.
Hard Rock Bet – Get 500 Free Spins Plus $1,000 Deposit Match
Hard Rock Bet’s welcome offer stands out as a generous one this March.
As a new player at Hard Rock Bet, you can get a 100% deposit match of up to $1,000 and 500 free spins when you deposit $20.
The deal has fair rules and gives you hundreds of spins on top slots, such as 88 Fortunes, Cleopatra, and Bonanza!
If you play at Hard Rock Bet throughout March 2025, you will automatically start earning Reward Points and Tier Credits.
These help you improve your player status and grab extra perks like Mystery Wheel spins, Bonus Bets, and so much more.
PlayStar Casino – Grab 500 Free Spins Plus $500 Deposit Match
There isn’t a PlayStar Casino no-deposit bonus for new players, but it does offer a sweet welcome package on your first three deposits.
On your first deposit, you can get 100% up to $500 and 100 free spins.
On your second and third deposits of at least $20, you become eligible for two other batches of 200 free spins each.
If you get the whole deal, you end up with a total of 500 free spins for five selected slots: Double Stacks, Bee Hive Bonanza, Twin Spin Megaways, Super Stars, and Divine Fortune Megaways.
Throughout March 2025, you can also try your luck on the $1,000 BlackjackPot or the Concierge Cashdrop Jackpot.
Stardust Casino – Snatch 25 Sign Up Spins Plus $100 and 200 Spins
New players at Stardust Casino have plenty exciting things to look forward to this March 2025.
Upon registration, you’ll get 25 spins on Starburst.
Then, they’re looking at a 100% deposit match of up to $100 and 200 Starburst spins on their first deposit.
When both deals are combined, you get 225 spins on one of the most popular online slots in the world – Starburst!
We want to mention that you can also opt in for an alternative Live Dealer Welcome Offer, which grants 50% cashback up to $150 on live game losses.
The brand has already organized some interesting events during the month, so we expect to see more of those.
Let’s not forget that Stardust Casino lets you join the BOYD Rewards Loyalty Program, so you can earn Tier Credits and Boyd Points.
March Madness At US Online Casinos
Welcome bonuses are the best way to start exploring casino gaming sites and trying new slots.
They either get you free bonus cash or double your deposits, prolonging your playing time and increasing your chances of winning something.
Players from New Jersey, Michigan, Pennsylvania and West Virginia have access to a range of trusted brands in addition to the ones listed above.
We have a complete list of top Real Money Online Casinos for you to try.
Check them out this March 2025 and discover all the way you can claim extra rewards.