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The long wait is over, Massachusetts! Legal online sports betting officially went live on Friday, March 10. To celebrate the launch, sportsbooks have made a number of welcome offers available to bettors in the Bay State, and we list here the best Massachusetts sports betting promo codes and bonuses to take advantage of for March Madness. 

DraftKings, BetMGM, Caesars, and WynnBET are our four favorite sportsbooks that launched Friday in Massachusetts. College basketball fans looking to make some wagers on March Madness can open accounts at this formidable quartet. By opening accounts at each of these approved operators, bettors can claim all four welcome offers for March Madness.

Here’s what you need to know about signing up at DraftKings, BetMGM, Caesars Sportsbooks, and WynnBET to get in on the March Madness online betting action in Massachusetts.

DraftKings Mass Sportsbook Promo Code: $1,250 in Bonuses for March Madness

DraftKings Massachusetts Sportsbook offers bettors in the Commonwealth a wide variety of betting markets, including a robust selection of March Madness lines.

Massachusetts customers who open a new account at DraftKings can claim up to $1,250 in bonuses to use on March Madness, or any qualifying contest at DraftKings.

Here’s how the $1,250 in bonus bets breaks down:

  • $50 Bonus Bet: Make a minimum $5 deposit to receive a $50 bonus bet.
  • 20% Deposit Match: DraftKings will match your first deposit up to 20%, with a maximum of $1,000 in bonus dollars on a $5,000 deposit.
  • Bet $5, get $200 in Bonus Bets: Make a $5 bet to receive $200 in bonus funds.

The 20% deposit match is the real meat and potatoes of this welcome offer. Bettors who deposit the maximum $5,000 will receive a whopping $1,000 in bonus cash just like that, but it’s always advised to gamble with only amounts you can afford, and any deposit will be matched 20% by DraftKings.

This is one of the best offers from a legal sportsbook in the state.

The deposit match bonus comes with a 25x playthrough requirement, meaning you just wager $25 for every $1 you would like to withdraw.

DraftKings Massachusetts Sportsbook

Get up to $1,250 in bonuses for March Madness

DraftKings has a three-part offer that totals a potential $1,250: 1) a $50 Bonus Bet when you sign up and make a deposit of just $5, 2) a 20% deposit match for up to $1,000, and 3) a special Bet $5, Get $200 in Bonus Bets instantly promotion.

21+ and present in MA. Gambling Problem? Call 1-800-327-5050

BetMGM Mass Bonus Code ‘TODAY’: $1,000 First Bet Offer for March Madness

BetMGM Massachusetts Sportsbook offers new users up to a $1,000 First Bet. This means that should your first bet with BetMGM not be a winner, you’ll be paid back in Bonus Bets.

Simply open your sports betting account at BetMGM and place your first bet for up to $1,000 on any March Madness game or another contest. If you win? Amazing! You keep those winnings. However, if you lose, BetMGM will refund your entire wager up to $1,000 in Bonus Bets.

That’s right. You’ll either win your $1,000 March Madness bet, or BetMGM will give you a chance to try again using site credits.

If your first bet is more than $50, you will receive five Bonus Bets, each equal to 20% of the stake. If your first bet is less than $50, you’ll receive one Bonus Bet

It’s a fantastic bonus. Just don’t forget to sign up using our exclusive sign-up link and bonus code “TODAY” so you can claim this offer!

BetMGM Massachusetts Sportsbook

Claim your $1,000 First Bet

BetMGM Sportsbook is offering new customers in Massachusetts a $1,000 First Bet when they use our BetMGM Massachusetts Bonus Code ‘TODAY’.

21+ and present in MA. Gambling Problem? Call 1-800-327-5050

Caesars Mass Promo Code ‘TODAY1BET’: $1,500 March Madness Bet on Caesars

Caesars Massachusetts Sportsbook offers new customers a $1,500 bet on the house, a perfect way to enjoy the early rounds of March Madness. If your first bet loses, get a Bonus Bet equal to the original stake.

There is a low, $10 minimum wagering requirement to unlock this promotion. If betting $1,500 is out of your price range, you can bet $200 instead. Still too high? Go ahead and wager whatever amount makes you comfortable!

Rest assured, Caesars will refund your first wager as a Bonus Bet in the event it loses. But make sure it’s your FIRST bet. This promotion does not apply to any subsequent wagers.

To claim this offer, sign up at Caesars Sportsbook by using our exclusive Caesars Massachusetts promo code “TODAY1BET”.

Caesars Massachusetts Sportsbook

Place a $1,500 March Madness Bet on the House

Get up to a $1,500 first bet on Caesars. Use our exclusive sign-up link and promo code TODAY1BET to claim this welcome offer.

MA only. 21+. New users and first wager only. Must register with eligible promo code. Bet amount of qualifying wager returned only if wager is settled as a loss. Maximum additional Bonus Bet of $1,000. Bonus Bet must be used within 14 days of receipt. See for full terms. Void where prohibited. Know When To Stop Before You Start.® Gambling Problem? If you or a loved one is experiencing problems with gambling, please call 1-800-327-5050 or visit for 24/7 support. LiveChat with a GameSense Advisor at or call 1-800-GAM-1234GameSense logo.

WynnBET Mass Promo Code: $100 Bet-and-Get

WynnBET Mass also has a generous offer for new customers: Collect $100 in betting credits automatically when you place a $100 wager, win or lose.

Here’s an example of how to use this promo: Place a $100 bet on one of Thursday’s March Madness games. Whether that bet hits or misses, you’ll receive $100 in betting credits that you can use when March Madness continues on Friday. Of course, if your bet hits, you’ll receive the usual winnings, too.

WynnBET Massachusetts Sportsbook

Bet $100, Earn $100

Head to WynnBET, play a $100 wager, and, win or lose, land $100 in betting credits. Click here to apply our WynnBET Mass promo code.

If you or a loved one is experiencing problems with gambling, call (800)-327-5050 for 24/7 support. Terms and conditions at Must be 21 or older to participate. Get set before you bet – talk to GameSense first! LiveChat @ or call 1-800-GAM-1234.

What Other Sportsbooks are Coming to Massachusetts?

While these sportsbooks are our favorite operators, sports bettors should keep an eye open for any new online sportsbooks opening in Massachusetts. By opening accounts at multiple sportsbooks, savvy bettors can shop for the best available odds and lines. It’s also a way to claim each of the fantastic sign-up offers available to Massachusetts residents.

A number of online sportsbooks launched Friday, and there’s still plenty of time to claim these welcome offers. We love DraftKings, BetMGM, Caesars, and WynnBET — and you will too!

Learn more: Top Sports Betting Apps in Massachusetts

If you or a loved one is experiencing problems with gambling, call 1-800-327-5050 or visit to speak with a trained specialist for free, 24/7

About the Author
Jim Robinson

Jim Robinson

Jim Robinson is a sports betting writer at Gaming Today. An entertainment professional with 20 years of experience as an actor, writer, producer, and comedian, Robinson recently transitioned into the world of sports media as a writer and content creator. He has over 15 years of experience as a sports bettor, poker player, and card sharp. Robinson is proficient in all forms of betting and in-game wagering but his expertise is the PGA Tour.

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