Best Massachusetts Sportsbook Promos for December 2025

Sports bettors signing up for the first time can unlock Massachusetts sportsbook promos from a variety of top-rated legal betting sites and sports betting apps.

With seven welcome offers to choose from, it’s important to know which ones truly deliver. Since promos are central to how we rate sportsbooks, we’ve ranked the best Massachusetts sportsbook promos based on bonus value, simplicity, and, of course, the overall experience for new bettors.

New users in Massachusetts can unlock up to $1,500 in bonus bets with the BetMGM bonus code SI1500. If your first wager doesn’t cash, BetMGM will refund the full amount in bonus bets, giving you a second shot at a win. Whether you’re playing it safe or chasing a long shot, this welcome offer gives you the flexibility to bet your way. BetMGM also features one of the top sportsbook referral bonuses.

Before you sign up with one of the best NFL betting sites, here are the key terms and conditions to know:

• You must be a new BetMGM customer and at least 21 years old to qualify.
• A minimum deposit of $10 is required to activate the promotion.
• If your first bet loses, you will receive bonus bets equal to your wager amount, up to $1,500.
• If your first bet is more than $50, you will receive five bonus bets, each worth 20% of your initial wager.
• If your first bet is less than $50, you’ll receive a single bonus bet equal to the amount you wagered.
• Bonus bets will be issued within 24 hours and expire seven days after they are credited to your account.
• This welcome offer is valid through Feb. 9, 2026.

BetMGM welcome bonus highlights

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Explore our BetMGM review for a full breakdown of the platform's features and the app experience, including why we rank BetMGM as one of the fastest payout sportsbooks.

New bettors in Massachusetts can take advantage of a rewarding welcome offer by using our Caesars Sportsbook promo code SICZR20X. Simply deposit $10 and place a $1 wager to receive 20 100% profit boost tokens, each of which doubles your potential winnings on eligible bets. This promotion is a smart way to enhance your early bets and explore Massachusetts sports betting markets at one of the best NBA betting sites.

Before you claim this Caesars Sportsbook promo code offer, here are the important terms and conditions you should know:

• To be eligible, you must be a new user who is at least 21 years old.
• You are required to make a minimum deposit of $10 and place a wager of at least $1.
• Each profit boost token provides a 100% increase on your winnings for qualifying bets, with a maximum stake of $25.
• Your first bet must have minimum odds of -10000 or longer.
• You can earn a maximum of $2,500 in additional winnings with each profit boost token.
• Profit boost tokens will expire 14 days after they are credited to your account.
• This promotion is valid until Dec. 16, 2025.

Caesars Sportsbook welcome bonus highlights

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Check out our Caesars Sportsbook review to see how it stacks up for Massachusetts bettors.

Massachusetts sports bettors looking for a straightforward bonus will appreciate this FanDuel promo code. With a low $5 wager, new users can unlock $150 in bonus bets — but only if their first bet wins. This offer makes it easy to get started with one of the top Massachusetts college football betting sites, requiring only a small deposit.

Before you claim this popular sports betting promo, here’s what you should know:

• This promotion is available exclusively to new users aged 21 or older and must be claimed on the FanDuel app.
• You must deposit at least $5 and place a minimum $5 wager to qualify.
• There are no odds restrictions on your initial wager.
• Bonus bets expire seven days after they are credited, so be sure to use them quickly.
• This FanDuel promo is available until Dec. 15, 2025.

FanDuel welcome bonus highlights

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Read our FanDuel review for an in-depth look at its user-friendly app, betting features, and what makes it one of the best parlay betting sites.

The DraftKings promo code presents new Massachusetts users with two strong welcome offers: Bet $5, get $200 in bonus bets if you win , plus a 20% deposit match up to $1,000. Both promos can be claimed after signing up and add great value to your Massachusetts sports betting experience.

Bet $5, get $200 in bonus bets if you win

This low-barrier offer is perfect for new bettors looking to get started with Massachusetts sportsbook promos. Place a winning $5 wager, and DraftKings will reward you with 8 $25 bonus bets. It’s a quick, flexible way to boost your bankroll and explore DraftKings’ app and betting markets.

Here are the key details to keep in mind:

• This promotion is open to new users aged 21 and older.
• You must apply the bonus token to your wager to activate the offer. Keep in mind, this bonus token will expire on Jan. 11, 2026.
• You must deposit and wager at least $5 to qualify.
• You must select the token before placing your bet to claim the offer.
• Bonus bets cannot be withdrawn; you keep any winnings from them but not the original stake.
• Bonus bets expire 7 days after being credited to your account.
• This offer expires on Jan. 4, 2026.

Up to $1,000 deposit match

For bettors ready to invest more, DraftKings also provides a 20% deposit match up to $1,000. This offer suits seasoned players or those who plan to bet regularly, as unlocking the full bonus requires substantial wagering and an initial $5,000 deposit.

DraftKings welcome bonus highlights

Important terms and conditions:

GAMBLING PROBLEM? CALL 1-800-GAMBLER, (800) 327-5050 or visit http://gamblinghelplinema.org (MA). Call 877-8-HOPENY/text HOPENY (467369) (NY).Please Gamble Responsibly. 888-789-7777/visit http://ccpg.org (CT), or visit Home (MD).21+ and present in most states. (18+ DC/KY/NH/WY). Void in ONT/OR/NH. Eligibility restrictions apply. On behalf of Boot Hill Casino & Resort (KS). Pass-thru of per wager tax may apply in IL. 21+ and present in most states. (18+ DC/KY/NH/WY). Void in ONT/OR/NH. Eligibility restrictions apply. On behalf of Boot Hill Casino & Resort (KS). Pass-thru of per wager tax may apply in IL. 1 per new customer. Must register new account to receive reward Token. Must select Token BEFORE placing min. $5 bet to receive $200 in Bonus Bets if your bet wins. Min. -500 odds req. Token and Bonus Bets are single-use and non-withdrawable. Token expires 1/11/26. Bonus Bets expire in 7 days (168 hours). Stake removed from payout. Terms: http://sportsbook.draftkings.com/promos. Ends 1/4/26 at 11:59 PM ET. Sponsored by DK.

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Dive into our DraftKings review for a comprehensive look at one of the top prop betting site's features.

Here's a summary of the top Massachusetts sportsbook promos and the best online betting sites for each bonus type in December 2025.        

Getting started with sports betting apps in Massachusetts is a straightforward process that requires just a few simple steps. Follow our guide to unlock the best MA sportsbook promos and set yourself up for a smooth, rewarding experience.

1. Pick a welcome offer

Massachusetts sportsbook promos come in all shapes and sizes, from bet-and-get bonuses to deposit matches. Browse the top offers on this page and choose the one that best fits your betting style.

2. Claim your promo code

Click any one of our links to activate your offer. Some Massachusetts sportsbook promos apply automatically, while others may require you to enter a code during registration. You may also be prompted to download the sportsbook app.

3. Create a new account

Fill out the registration form with your name, date of birth, address, email, and the last four digits of your Social Security number. These details are used to verify your identity and comply with Massachusetts sports betting laws.

4. Verify your identity

Before you can bet, most apps will ask you to upload a valid photo ID. This step confirms that you're at least 21 years old and physically located in Massachusetts, both of which are legal requirements for online betting.

5. Deposit funds

Make a qualifying deposit using your preferred payment method. Most sports betting apps in Massachusetts accept secure options like PayPal, Venmo, credit cards, debit cards, online banking, and Apple Pay.

6. Place a bet

Now you’re ready to bet. Make your first wager according to the promo’s terms — for example, the DraftKings welcome offer requires your first bet to have minimum odds of at least -500. Always double-check the offer details before you bet.

7. Enjoy your bonus

Once your bet settles, your bonus funds or bet credits will be added to your account. Most sports betting promos in Massachusetts come with a seven-day expiration window, so be sure to use your bonus bets before they expire.

Explore our state-by-state promo guides to see which sportsbook bonuses are available for you in 2025.