Best March Madness Betting Promo Codes & Bonuses For 2025: Claim More Than $5k+

Our favorite March Madness sports and social betting promos in 2025

Before I dive headfirst into this one, why not check out some of these fantastic March Madness betting promos?

What is March Madness?

If you are on the hunt for the next best March Madness betting promo, then I would like to think that you already have a decent understanding of what March Madness is and how it works. However, for those who are new to the NCAAB’s biggest tournament and simply looking to mix things up, let me provide you with a quick breakdown.

March Madness is a 68-team NCAAB tournament that follows a single-elimination model. In other words, each team has one chance against their opponent to move on to the next round. This continues until one team is eventually crowned the winner.

This year, things kick off on Sunday, March 16th, when we learn more about the selections. From here, the “first four” (the lowest-seeded teams) will face off to see who joins the main competition. Then, you will find the tournament runs on the following schedule, eventually reaching its climax on April 7th at the Alamodome in San Antonio, Texas.

• Selection Sunday: March 16th
• First Four: March 18th & 19th
• First round: March 20th & 21st
• Second round: March 22nd & 23rd
• Sweet 16: March 27th & 28th
• Elite Eight: March 29th & 30th
• Final Four: April 5th
• NCAAB championship game: April 7th

How will you be betting on this year’s March Madness?

It would be fair to suggest that online betting laws are pretty complex throughout the US. So, before you think about getting your hands on a March Madness betting promo, it could be worth considering how you will be betting on March Madness this year.

In 38 US states, you’ll find some of the best real-money sportsbooks are legal and open to you. This provides you with the chance to deposit, unlock, and play through real-money betting promos across a range of March Madness markets. But what about the rest of you?

Well, you’ll also find that social sportsbooks now operate under the sweepstakes umbrella. These social betting sites allow you to unlock Gold Coins and Sweeps Coins to socially bet on March Madness in two separate betting “modes”.

Gold Coins are for entertainment only, allowing you to enjoy the full social betting experience with fun as your focus. Sweeps Coins, however, will enable you to enter a promotional style of social betting. In turn, you will find that any additional Sweeps Coins won through social bets have the potential to be played through and redeemed for real prizes. Of course, the terms surrounding this will vary based on your chosen site.

The other good news about social sportsbooks is that they are considered legal in most US states, meaning even those with real-money sports betting opportunities could opt to join a social site instead. Not to mention that social sportsbooks are entirely free to use, meaning you can pick up March Madness betting promos without ever spending a dime.

Top rated sportsbooks in April

1.

4.7/5

Bet365 Review

Get $150 in Bonus Bets Win or Lose when you bet $5!

USA Welcome

Bet now

Subject to meeting qualifying criteria. Minimum wager $5. Minimum odds -500 or greater. $10 minimum deposit. Paid in Bonus Bets. Bonus Bets wager excluded from returns. New customers only. Available in app only. Max. prize, game restrictions, time limits and T&Cs apply. Deposit required. Bonus Bets wager excluded from returns. T&Cs, time limits and exclusions apply.Gambling Problem? Call 1-800-Gambler 21+

2.

4.7/5

BetMGM Review

Up To $1500 in Bonus Bets Paid Back if your First Bet Does Not Win

USA Welcome

Bet now

Gambling problem? Call 1-800-GAMBLER (Available in the US) Call 877-8-HOPENY or text HOPENY (467369) (NY) Call 1-800-327-5050 (MA) 21+ only. Please Gamble Responsibly. Call 1-800-NEXT-STEP (AZ), 1-800-BETS-OFF (IA), 1-800-981-0023 (PR). Rewards are non-withdrawable bonus bets that expire in 7 days. In partnership with Kansas Crossing Casino and Hotel. See BetMGM.com for Terms. US promotional offers not available in DC, Mississippi, New York, Nevada, Ontario, or Puerto Rico.

3.

4.6/5

Caesars Review

Bet $1, Double Your Winnings Your Next 10 Bets

USA Welcome

Bet now

Must be 21 or older and physically present in AZ, CO, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, NJ, NY, NC, OH, PA, TN, VA, WV, or WY. See Caesars.com/promos for Full Terms. Know When To Stop Before You Start®. Gambling Problem? CO, IL, KY, MD, MI, NJ, OH, TN, VA, WV, WY,KS (Affiliated with Kansas Crossing Casino), LA (Licensed through Horseshoe Bossier City and Harrah’s New Orleans),ME (Licensed through the Mi’kmaq Nation, Penobscot Nation, and Houlton Band of Maliseet Indians, federally recognized tribes located in the State of Maine), NC (Licensed through Tribal Casino Gaming Enterprise), PA (Affiliated with Harrah's Philadelphia):If you or someone you know has a gambling problem, crisis counseling and referral services can be accessed by calling 1-800-GAMBLER (1-800-426-2537) or MD: visitmdgamblinghelp.orgor WV: visit 1800gambler.net; AZ: Call 1-800-NEXT- STEP; IN: Call 1-800-9-WITH-IT; IA: Call 1-800-BETSOFF.©2024, Caesars Entertainment Gambling Problem? Call 1-800-GAMBLER MA: CALL1-800-327-5050 or visitgamblinghelplinema.org NY: Call 877-8-HOPENY or text Hambling problem? Call 1-800-GAMBLER (Available in the UOPENY (467369)

4.

4.6/5

Hard Rock Bet Review

Up to $100 Back in Bonus Bets If Your First Bet Doesn’t Win

USA Welcome

Bet now

To be eligible, the Player must be at least 21 years old, physically located in Virginia, and not on any exclusionary lists in Virginia. To be eligible all personal and contact data associated to your account must be verifiable. Gambling Problem? Call 1-800-GAMBLER.

5.

4.5/5

FanDuel Sportsbook Review

Bet $5 Get $250 in Bonus Bets IF YOU WIN

USA Welcome

Bet now

Gambling Problem? Call 1-800-GAMBLER. Hope is here. GamblingHelpLineMA.org or call (800) 327-5050 for 24/7 support (MA). Call 1-877-8HOPE-NY or text HOPENY (467369) (NY). 21+ and present in select states. FanDuel is offering online sports wagering in Kansas under an agreement with Kansas Star Casino, LLC. Gambling Problem? Call 1-800-GAMBLER or visit FanDuel.com/RG (CO, IA, KY, MI, NJ, OH, PA, IL, TN, VA, VT), 1-800-NEXT-STEP or text NEXTSTEP to 53342 (AZ), 1-888-789-7777 or visit ccpg.org/chat (CT), 1-800-9-WITH-IT (IN), 1-800-522-4700 or visit ksgamblinghelp.com (KS), 1-877-770-STOP (LA), visit www.mdgamblinghelp.org (MD), 1-800-522-4700 (WY), or visit www.1800gambler.net (WV).

What types of March Madness betting promos can you expect to come across in 2025?

Although not the only thing you should be looking out for when joining a March Madness betting site, there is no doubt that bonuses and promotions will play a huge role. With this in mind, I’ve taken the time to provide you with a quick look at the most common offers you’ll find at real money and social sports betting sites.

• Deposit match: The deposit match bonus is a staple found at most Match Madness betting sites, allowing you to receive a percentage of your deposit back in the shape of bonus bets. You’ll then need to play through your bonus bets a set number of times before they are considered part of your cash balance.
• No-deposit bonus: The no-deposit bonus is often far smaller in size, but what it lacks in size, it sure makes up for in ease. You won’t need to deposit anything to unlock this one. Instead, you’ll simply register and verify your details before grabbing bonus bets to use on March Madness. Of course, if not available at the sign-up stage, you may find this one as a way of getting you in the spirit of the NCAAB's most anticipated tournament.
• First bet offers: A first bet offer is another top promotion that you can expect to find at some of the best March Madness betting sites. This bonus provides you with a type of security blanket, returning your initial stake as bonus bets if it fails. If it wins, however, you’ll simply walk away with your winnings.
• Odds boost: This one is pretty self-explanatory. However, you will find that this March Madness betting promo allows you to add a significant boost to pre-made accumulators, your own parlays, or single bets. For parlays, you will often find that the boost increases based on the number of picks. Of course, enhanced odds around March Madness are worth checking out, too.
• Predictors: Although not strictly a March Madness betting promo, you will find that many sites offering play-for-free prediction games will cover the major fixtures. Here, you simply need to create your picks, focusing on who you think will win. Then, once resulted, you could walk away with bonus bets based on your position on the leaderboard.
• Refer a friend: The refer-a-friend bonus is a March Madness betting promo that has become commonplace at the best real money and social sports betting sites. With this offer, you can refer your friends using your unique link, wait for them to join, and benefit from bonus bets or virtual tokens that can be used to bet on March Madness in 2025.
• Daily login bonuses: When looking specifically at social sportsbooks, the daily login is a real standout. This bonus allows you to add a number of Gold Coins and Sweeps Coins to your account every 24 hours. To claim, you won’t need to ever worry about making a purchase; however, you may need to spin a prize wheel or complete a simple task before checking out the available March Madness social markets.
• Social media giveaways: Did you know you can pick up rewards by checking out social media, too? Although used mainly by social sportsbooks, it is always worth entering any sports betting contests that require a like, share, or comment. Should you win, you’ll find virtual tokens (social sportsbook) or bonus bets (real-money sportsbook) added to your account.
• Alternative method of entry (AMoE): This is another March Madness betting promo exclusive to social sportsbooks. Instead of logging in, making a purchase, or entering giveaways, you’ll actually find that you can send off a request for more Sweeps Coins through the post. Once received, you’ll find that your bonus will soon be added to your balance.

Things to consider while playing through your March Madness betting promos

Now that you know a little bit more about the types of March Madness betting promos you are likely to stumble across, let’s make sure that you understand the terms attached to them.

The best places to find real money CBB sports betting promos in April

Now for the bit you’ve been waiting for. I’ve been busy reviewing the best March Madness betting promos available and have decided that these five real-money sports betting sites deserve to have the spotlight shined on them. Just bear in mind that the bonuses mentioned in these mini-reviews are examples only and may vary based on your current location.

BetMGM

BetMGM Sportsbook: Pros & Cons

• Legal in dozens of US states
• Generous welcome bonus
• Great odds and odds boosts
• Live streaming available

• FAQ slightly complicated

Visit BetMGM

Let me begin with a closer look at the ever-popular BetMGM. As a new user, you will soon be able to make the most of a first bet offer of up to $1,500. However, you will also find College Basketball odds boosts and a free-to-play game predictor along the way.

Once you’ve unlocked your welcome bonus, you’ll want to head on over to the ‘basketball’ section. Here, you will then find a small tab in the header that allows you to open up ‘college’ markets. Instantly, you’ll be met with spreads, totals, and moneylines; however, a quick click on the ‘All Wagers’ tab opens the doors to a range of alternatives. Not to mention that in-play betting opportunities are also available.

Caesars

Pros and cons of Caesars Sportsbook

• Superb live betting coverage
• Great coverage for US and global sports
• High-value welcome bonus worth up to $1,000
• High-quality mobile app for Android and iOS

• Limited promotions for existing customers

Visit Caesars

Caesars is renowned for mixing things up, offering fans from different states the chance to benefit from separate bonuses. As an example, though, you may find that you can bet $1 on College Basketball markets and receive up to $150 in bonus bets to use across the site, or you could bet $1 and receive double winnings on your next ten wagers.

Regardless of the CBB betting promo you select, you’ll always be backed by competitive odds. You’ll also find that the app and desktop site are easy to navigate, bet-building is a breeze, and each wager will contribute towards your Caesars Rewards. In time, you could find that your CBB stakes have unlocked an overnight stay or expensive dinner out.

bet365

Bet365: Pros & Cons

• Generous welcome offer
• Dedicated mobile apps for Android and iOS
• Live betting and streaming
• Diverse range of sports and betting markets

• No VIP or loyalty program

Visit Bet365

Next, it is time to take a look at bet365. Again, you’ll have a choice between your welcome bonus; however, this will be limited to a $1,000 first bet offer or the chance to bet $5 and get $150 in bonus bets.

Unsurprisingly, you’ll find College Basketball is trending on the left-hand side of your screen. A quick click is all it takes to open up eligible markets. Spreads, moneylines, and totals are all backed by competitive odds, and in-play opportunities are updated regularly. Plus, I was a big fan of the boosted odds, offering enhanced odds on a selection of pre-made four-part parlays.

FanDuel

Pros and cons of FanDuel sportsbook

• Superb welcome bonus
• Modern and stylish FanDuel betting app
• Available in 37 different states
• Fantastic futures bets

• The welcome bonus isn’t guaranteed

Visit FanDuel Sportsbook

Although often dubbed as the home of daily fantasy sports, FanDuel more than holds its own as a sportsbook. In fact, as a new user, you can pick up a pretty impressive welcome bonus to help get your experience off to a flying start – simply bet $5 and get $200 in bonus bets if it wins.

Alongside a top welcome bonus, you’ll find a number of boosted odds and seasonal promotions running during the CBB campaign. You can also bolster your betting experience here by making use of the research tools and player stats before heading to the lobby and placing your spreads, moneylines, totals, props, or futures.

DraftKings

DraftKings: Pros & Cons

• Famous US-based brand
• Available in 26 states
• Bonus bet welcome offer
• Great odds
• User-friendly app

• Low bet limits for odds boosts

Visit DraftKings

The final spot has to go to Draftkings. Here, you can get signed up within minutes before making the most of a welcome bonus, offering you the chance to make a $5 bet and get $150 in bonus bets. From here, I soon spotted College Basketball parlay boosts, a referral program, and Dynasty rewards to ensure you add to your bonus balance throughout.

CBB betting promos aside, I also found one of the most complete sports betting lobbies in April. Although busy for some, you’ll find headers focused on game lines, props, quick hits, combos, moneylines, and more. Not to mention that updated in-play opportunities are available, too. I liked how easy it was to build your bets, and you could test the waters from as little as $0.10.

Discover the best CBB betting bonuses for use at social sportsbooks

If real-money betting sites are out of the question for you (or you just like the idea of social betting sites), you’ll definitely want to check out these fantastic social sportsbooks. As you’ll soon see, all come with great perks, including a clear focus on this year.

Sport Millions

SportsMillions: Pros & Cons

• No purchase necessary
• DFS and casino game options
• Ongoing bonuses and promotions
• Redemption possible with Sweepstakes Coins

• Not legal in all states

Sports Millions kicks things off with a unique take on social betting that introduces a daily fantasy element. Here, you will be able to register within minutes, add 1,000 Gold Coins and 3 free Sweeps Coins to your account, and soon make your way over to the lobby.

Here, you will soon find Blitz ‘ems – a hybrid social betting and DFS contest that runs exclusively at Sports Millions. The idea is that you’ll enter your chosen College Basketball ‘contest’, spin a prize wheel, and spin another wheel to determine your picks. These picks are auto-assigned, making the process nice and quick. However, to win, you’ll need all selections to land. Along the way, you’ll find that you can keep things topped up with an impressive daily login bonus, social media giveaways, and an AMoE.

Fliff

Fliff: Pros & Cons

• Huge new customer offer
• Responsive support team
• Impressive mobile accessibility
• Range of ongoing perks

• Limited payment methods

Visit Fliff

Fliff is a bit of a curveball as they don’t currently allow you to pick up a free-to-release new customer offer straight from the off. That said, you can make the most of a daily login bonus and the AMoE to ensure that you get enough Fliff Coins and Fliff Cash to really enjoy College Basketball. Of course, if you don’t mind splashing the cash, Fliff does have a number of first-time purchase promo options, ranging from $9.99 - $99.

So far as social betting is concerned, you’ll notice that you can soon head on over to the College Basketball section of the app. Here, you can filter through all upcoming fixtures, building your predictions with a single click. I found around 10-15 markets per fixture, ranging from moneylines to alternative totals. Should you opt to bet with Fliff Cash, remember that any winnings can be played through and later redeemed for prizes. You’ll just need 50 redeemable Fliff Cash in your account to get the ball rolling.

Legendz

Legendz: Pros & Cons

• Generous welcome offer
• Redeemable cash prizes
• Quality slots and table games
• Massive online sportsbook

• Lacking a mobile app

Visit Legendz Casino

Next up, it is time to talk a bit more about Legendz. This is a social casino and sportsbook hybrid that allows you to get started with a healthy 500 Gold Coins and 3 free Sweeps Coins. From here, you’ll see that a quick click on ‘sports’ is all it takes to discover available CBB markets.

Once you find yourself in the social betting lobby, a world of social betting opportunities awaits. You’ll find that Legendz extends far beyond standard moneylines and spreads, offering chances to bet on totals, props, and futures with fun or promotional betting as the focus. Plus, I really liked that you could personalize the sportsbook, highlighting your favorite sports, teams, and players.

Kickr

Kickr: Pros & Cons

• Social casino and sports offerings
• Numerous promotional offers
• Legit in 46 US states
• 15 gift card redemption options

• Limited number of games

Visit Kickr

Kickr is another hybrid platform that allows you to enjoy casino-style games and social betting under one roof. To get you started, you can click on the links on this page, work through the registration form, and soon unlock 150,000 Bucks and 4 Bits. I also found that a daily login, drip, and referral program helps to keep your Bucks and Bits topped up during the tournament.

Speaking of College Basketball, you’ll find that this is heavily covered over at Kickr. You can toggle over to the sports section, click on basketball, and soon find social betting markets throughout March and April. Just bear in mind that a comparatively higher prize redemption limit (200 redeemable Bits) can be expected for those betting with Bits in a promotional manner.

Thrillzz

Thrillzz: Pros & Cons

• Exclusive social sportsbook
• Highly-rated mobile app
• Email and phone support channels
• Welcome bonus of 3,000 Thrillzz Coins and 3 Thrillzz Sweeps

• Only available on mobile

Visit Thrillzz

Thrillzz is an app-only social betting and prediction platform that offers great coverage of College Basketball. To join, you’ll need to download the app, share some personal details, and verify your account before you can get your hands on 3,000 Thrillzz Coins and 3 Thrillzz Sweeps.

Once locked and loaded, you can make your way over to the lobby. The app is simple to navigate, providing you with a scrollable main page and key links in the header and footer of the screen. Social bets can be placed within a couple of clicks, ongoing rewards keep your virtual tokens topped up, and the social ‘Squads’ feature helps you link up with friends to create some top predictions.

Make the most of our reviews to find the best CBB promos around

That should have just about covered everything you need to know about college basketball betting promos in 2025. Now, all that is left to suggest is checking out my latest reviews on the best March Madness betting bonuses available.

As you can see, real-money sports bettors should consider starting with BetMGM, Caesars, bet365, Fanduel, and DraftKings, while social bettors should take time to check out Sports Millions, Fliff, Legendz, Kickr, and Thrillz. All of these sites provide excellent coverage of College Basketball, offer competitive promotions, and allow you to really immerse yourself in the action. Just remember to set your limits early, check out the small print, and don’t forget to consider what promotions await once the mayhem of the tournament passes you by.

More of our favorite sports betting bonuses in April

1.

4.7/5

Bet365 Promo Code

Get $150 in Bonus Bets Win or Lose when you bet $5!

USA Welcome

Wagering: 1x Bonus, Min. Deposit: $10

Copy

Get bonus now

Subject to meeting qualifying criteria. Minimum wager $5. Minimum odds -500 or greater. $10 minimum deposit. Paid in Bonus Bets. Bonus Bets wager excluded from returns. New customers only. Available in app only. Max. prize, game restrictions, time limits and T&Cs apply. Deposit required. Bonus Bets wager excluded from returns. T&Cs, time limits and exclusions apply.Gambling Problem? Call 1-800-Gambler 21+

2.

4.7/5

BetMGM Promo Code

Up To $1500 in Bonus Bets Paid Back if your First Bet Does Not Win

USA Welcome

Min. Deposit: $5

Open BetMGM

Get bonus now

Gambling problem? Call 1-800-GAMBLER (Available in the US) Call 877-8-HOPENY or text HOPENY (467369) (NY) Call 1-800-327-5050 (MA) 21+ only. Please Gamble Responsibly. Call 1-800-NEXT-STEP (AZ), 1-800-BETS-OFF (IA), 1-800-981-0023 (PR). Rewards are non-withdrawable bonus bets that expire in 7 days. In partnership with Kansas Crossing Casino and Hotel. See BetMGM.com for Terms. US promotional offers not available in DC, Mississippi, New York, Nevada, Ontario, or Puerto Rico.

3.

4.6/5

Caesars Promo Code

Bet $1, Double Your Winnings Your Next 10 Bets

USA Welcome

Wagering: 1x Deposit

Open Caesars

Get bonus now

Must be 21 or older and physically present in AZ, CO, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, NJ, NY, NC, OH, PA, TN, VA, WV, or WY. See Caesars.com/promos for Full Terms. Know When To Stop Before You Start®. Gambling Problem? CO, IL, KY, MD, MI, NJ, OH, TN, VA, WV, WY,KS (Affiliated with Kansas Crossing Casino), LA (Licensed through Horseshoe Bossier City and Harrah’s New Orleans),ME (Licensed through the Mi’kmaq Nation, Penobscot Nation, and Houlton Band of Maliseet Indians, federally recognized tribes located in the State of Maine), NC (Licensed through Tribal Casino Gaming Enterprise), PA (Affiliated with Harrah's Philadelphia):If you or someone you know has a gambling problem, crisis counseling and referral services can be accessed by calling 1-800-GAMBLER (1-800-426-2537) or MD: visitmdgamblinghelp.orgor WV: visit 1800gambler.net; AZ: Call 1-800-NEXT- STEP; IN: Call 1-800-9-WITH-IT; IA: Call 1-800-BETSOFF.©2024, Caesars Entertainment Gambling Problem? Call 1-800-GAMBLER MA: CALL1-800-327-5050 or visitgamblinghelplinema.org NY: Call 877-8-HOPENY or text Hambling problem? Call 1-800-GAMBLER (Available in the UOPENY (467369)

4.

4.6/5

Hard Rock Bet Promo Code

Up to $100 Back in Bonus Bets If Your First Bet Doesn’t Win

USA Welcome

Wagering: Only the first placed cash bet will qualify for this promotion, Min. Deposit: 10

Open Hard Rock Bet

Get bonus now

To be eligible, the Player must be at least 21 years old, physically located in Virginia, and not on any exclusionary lists in Virginia. To be eligible all personal and contact data associated to your account must be verifiable. Gambling Problem? Call 1-800-GAMBLER.

5.

4.5/5

FanDuel Sportsbook Promo Code

Bet $5 Get $250 in Bonus Bets IF YOU WIN

USA Welcome

Wagering: 1x Deposit, Min. Deposit: $5

Open FanDuel Sportsbook

Get bonus now

Gambling Problem? Call 1-800-GAMBLER. Hope is here. GamblingHelpLineMA.org or call (800) 327-5050 for 24/7 support (MA). Call 1-877-8HOPE-NY or text HOPENY (467369) (NY). 21+ and present in select states. FanDuel is offering online sports wagering in Kansas under an agreement with Kansas Star Casino, LLC. Gambling Problem? Call 1-800-GAMBLER or visit FanDuel.com/RG (CO, IA, KY, MI, NJ, OH, PA, IL, TN, VA, VT), 1-800-NEXT-STEP or text NEXTSTEP to 53342 (AZ), 1-888-789-7777 or visit ccpg.org/chat (CT), 1-800-9-WITH-IT (IN), 1-800-522-4700 or visit ksgamblinghelp.com (KS), 1-877-770-STOP (LA), visit www.mdgamblinghelp.org (MD), 1-800-522-4700 (WY), or visit www.1800gambler.net (WV).

March Madness Betting Promo FAQ