We are just a week out from the tip-off of March Madness 2025, with the First Four on Tuesday, March 18, and sports betting fans can get their hands on the best March Madness betting promos in time for opening night.

Claim up to $3,850 in bonuses from the best sports betting sites in the United States, with March Madness sign-up bonuses offering new customers the chance to be rewarded for placing bets on the tournament.

We have picked out the best March Madness betting promos so you don’t have to—our top list features the best betting sites for college basketball wagers. Take a look below to see our pick of the top betting promos for March Madness 2025.

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Best March Madness Betting Promos 2025

1. bet365 – Bonus Code – BETTINGCOM – $1,000 First Bet Safety Net or Bet $5, Get $150 in Bonus Bets
2. BetMGM – Bonus Code – MGM101GG – $1,500 Paid Back in Bonus Bets if you Lose
3. DraftKings – Bet $5, Get $150 in Bonus Bets Instantly
4. FanDuel – Bet $5, Get $200 in Bonus Bets if you Win
5. Fanatics Sportsbook – Bet $30, Get $300 in Bonus Bets or Up to $1,000 in No Sweat Bonus Bets

Early March Madness Betting Promos Explained

Each bonus above works differently and requires users to complete different steps to redeem the bonus bets on offer. Find out more about each of these welcome bonuses below.

1. bet365 – Bonus Code BETTINGCOM

By registering with bet365 using the bonus code BETTINGCOM, users can pick between two available welcome bonuses. The first bet365 sign-up bonus gives you $150 in bonus bets when you wager $5 on any selection at odds of -500 or greater. The $150 in bonus bets will be available regardless of whether your qualifying bet wins or loses. Alternatively, you can claim the $1,000 first bet safety net. If you do so, place a first bet on the sportsbook up to $1,000; if it loses, you will receive your entire stake back in bonus bets to use again at bet365. Just use the bet365 bonus code BETTINGCOM to get your hands on one of these promos today in time for the start of March Madness.

CLAIM BET365 BONUS CODE BETTINGCOM HERE

bet365 Legal States

bet365 is legal in Arizona, Colorado, Indiana, Iowa, Kentucky, Louisiana, New Jersey, North Carolina, Pennsylvania, Ohio, and Virginia.

1. BetMGM – Bonus Code MGM101GG

The BetMGM bonus code MGM101GG can secure new customers a $1,500 welcome promo to use ahead of March Madness. The BetMGM sign-up bonus works in the form of a first bet insurance promo, promising to give new users their first wager back in bonus bets if it loses, up to a maximum of $1,500 in bonus bets. If you bet $50 or more with your first wager and it loses, you will receive five equal bonus bets in return worth the value of your first stake. Any losing first wagers below $50 will be compensated with one bonus bet worth the same value of your stake.

CLAIM BETMGM BONUS CODE MGM101GGHERE

BetMGM Legal States

BetMGM is legal in Arizona, Colorado, DC, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Mississippi, New Jersey, New York, Nevada, North Carolina, Ohio, Pennsylvania, Puerto Rico, Tennessee, Virginia, Washington D.C., West Virginia, and Wyoming.

1. DraftKings

New DraftKings customers can get their hands on $150 in bonus bets instantly a week before the start of March Madness. Register with DraftKings for the first time here and place a $5 bet on any sport on the sportsbook. Once this has been completed, you will receive 6 x $25 bonus bets into your account, giving you a total of $150 in bonus bets to use on March Madness.

CLAIM DRAFTKINGS SIGN-UP BONUS HERE

DraftKings Legal States

DraftKings Sportsbook is legal in Arizona, Colorado, Connecticut, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oregon, Pennsylvania, Tennessee, Vermont, Virginia, Washington D.C., West Virginia, and Wyoming.

1. FanDuel

At FanDuel, there is the opportunity to secure $200 in bonus bets to use on March Madness betting markets. All new customers who join FanDuel Sportsbook here can get the $200 bonus by registering and placing a $5 bet on any sport. However, for the bets to be released, your $5 qualifying bet must win. The $200 in bonus bets will be free to use as you wish; either place the entire amount on one single wager, or break them up into increments to place multiple March Madness wagers.

CLAIM FANDUEL SIGN-UP BONUS HERE

FanDuel Legal States

FanDuel is legal in Arizona, Colorado, Connecticut, DC, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Tennessee, Vermont, Virginia, West Virginia, and Wyoming.

1. Fanatics Sportsbook

Finally we have Fanatics Sportsbook, who are offering two welcome bonuses to choose from for players in AZ, MI, NJ or PA. If you are in one of these four states, you are eligible to claim the bet $30, get $300 in bonus bets promo. This requires you to place a $10 bet on each of the first three days of being an account holder, after which you will be rewarded with $100 in bonus bets. For users in these four states and all other legal Fanatics Sportsbook regions, there is the opportunity to get $1,000 in no sweat bonus bets over the first 10 days of your account being active. Bet $100 on each of these days using the no sweat bet token in your betslip to get your wager back in bonus bets if it loses.

CLAIM FANATICS SPORTSBOOK SIGN-UP BONUS HERE

Fanatics Sportsbook Legal States

Arizona, Colorado, Connecticut, Indiana, Illinois, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Tennessee, Vermont, Virginia, West Virginia, Wyoming and the District of Columbia.

March Madness 2025 Schedule

• Selection Sunday: Sunday, March 16
• First Four: Tuesday, March 18-19
• First Round: March 20-21
• Second Round: March 22-23
• Sweet 16: March 27-28
• Elite Eight: March 29-30
• Final Four: Saturday, April 5
• NCAA Championship Game: Monday, April 7

Gamble Responsibly

If you or someone you know has a gambling problem and wants help, call or visit the Council on Compulsive Gambling:

• Gamblers Anonymous at 855-2-Call GA or www.gamblersanonymous.org
• CO, DC, IL, IN, LA, MD, MS, NJ, OH, PA, TN, VA, WV or WY – Call 1-800-GAMBLER
• AZ – Call 1-800-NEXT-STEP
• IA – Call 1-800-BETS-OFF
• KS, NV – Call 1-800-522-4700
• KY – Call 1-800 GAMBLER, 18+
• MI – Call 1-800-270-7117 for confidential help
• MA – Call 1-800-327-5050
• NC – Call – 1-800-662-4357
• NY – Call 877-8-HOPENY or text HOPENY (467369)

DISCLAIMER: The information on this site is for entertainment purposes only. Gambling comes with its fair share of risks, and it is important to recognize that when using online gambling sites.

While we review different gambling sites, you should check with local laws in your area before gambling online. Also, all gambling sites and guides are rated 21+ only.

The following free gambling addiction resources can be of help:

21+ Please Gamble Responsibly. Gambling Problem? Call or text 1-800-GAMBLER

NCPG – ICRG – Gamblers Anonymous – Gambling Therapy