It’s a free casino bonus frenzy this May!
I’ve rounded up the most generous Online Casino no deposit bonus codes up for grabs and listed each of them in detail.
Scroll down to find out more about where and how you can play real money casino games for free this month.
Top Real Money Online Casino Promo Codes for May 2025
Below, you will find the best US Online Casino no deposit promos you can scoop up this May.
Each give you free casino credits to play without depositing.
You can click ‘Claim Now’ to register and get the bonus code automatically applied.
This page contains references to offers from one or more of our partners. We may receive compensation when you click on those links and redeem an offer. Terms and conditions apply to the offers listed on this page.
| Casino | No Deposit Bonus | Claim Now |
| BetMGM | Get A $25 Freeplay Bonus | Claim Now |
| Borgata | Grab A $20 No Deposit Bonus | Claim Now |
| Hard Rock Bet | Get A $25 Casino Bonus Free | Claim Now |
BetMGM Casino – Get A $25 Freeplay Bonus
You can get $25 free play when you sign up to BetMGM Casino this May.
You have three days to use the credits on more than 3,000 real money slots, excluded a collection of 70+ titles that are listed in the brands T&Cs.
There is also a generous first deposit match of 100% up to $1,000 available. All you need to do is make a deposit of at least $10.
This is perfect for doubling your deposit and playing twice as long!
| Valid for | Three (3) days after registration. |
| Eligible games | Slots (70+ excluded slots are listed in T&Cs). |
| Playthrough requirements | 1x on BetMGM slots and jackpot slots. |
| Redemption time | Seven (7) days to complete the wagering. |
88 Fortunes is a great pick for a game to start with, because it has a minimum bet of only $0.08. That guarantees you more than 300 free spins using your $25.
Borgata Casino – Grab A $20 No Deposit Bonus
Earn a no deposit bonus of $20 as a new player at Borgata Casino this month.
You can put this toward spins on the site’s catalog of more than 5,000 games, such as Bonanza.
With your free $20, you could take 100 free spins on this $0.20 minimum title and many others like it.
| Valid for | Three (3) days after registration. |
| Eligible games | Borgata Casino slots (70+ excluded slots are listed in T&Cs). |
| Playthrough requirements | 1x on Borgata Casino slots. |
| Redemption time | Seven (7) days to complete the wagering. |
You can also consider depositing a minimum of $10 to unlock a deposit match bonus of 100% up to $1,000.
Hard Rock Bet Casino – Get A $25 Casino Bonus Free
Hard Rock Bet welcome news players to the platform this month with a free $25 casino bonus.
This can be used to test out new and exclusive slots in the brand’s library of more than 1,700 titles.
I used my bonus on Arabian Wins, which got me 125 free spins.
| Valid for | Seven (7) days after registration. |
| Eligible games | Slots |
| Playthrough requirements | 1x |
| Redemption time | Between 2 – 5 business days. |
If you deposit, you can also take advantage of a 100% deposit match of up to $1,000.
Get More Online Casino Bonuses This May
The no deposit promos aren’t the only rewards on offer this month.
You can also get in on the 24-hour lossback and free spins bonuses.
Check out the full list of trusted US Real Money Casinos to get a full overview of exactly what you can get.
If you’re outside of New Jersey, Pennsylvania, Michigan or West Virginia, here are the best free Sweeps coins bonuses for this month.