Massachusetts Betting Sites, Apps & Guide
Online sports betting went live in Massachusetts on March 10, 2023, about six weeks after the casino sportsbooks opened. The Massachusetts Gaming Commission licenses seven online sportsbooks. A few rules here are stricter than elsewhere: you can't deposit with a credit card, and in-state college teams are off the board unless they are playing in a tournament.
Below is our list of the best Massachusetts apps, followed by a closer look at each one we recommend. Further down we cover the college rules, how Massachusetts taxes winnings and the questions people ask us most.
Offers checked November 4, 2026. Terms apply to every offer, so read them on the operator's site before you sign up.
Best Massachusetts apps
Underdog: Trading involves risk, including total loss on positions
Polymarket US: 18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.
See below for more information.
Massachusetts app reviews
Each card covers one app from the list, with the welcome offer we checked, what it does best and how it works in Massachusetts.
1. FanDuel
FanDuel opened on launch day in March 2023 and announced a multiyear deal with the Boston Bruins the same day. It holds one of the state's untethered online licenses, so it doesn't need a casino partner here.
The app is quick to learn, and same game parlays on Patriots and Celtics games take a few taps.
- Welcome offer: Bet $5+ for 4 Days, Get $200 in Bonus Bets
- Live in Massachusetts since: March 10, 2023
- Best for: Same game parlays and a simple app
- Apps: iOS, Android and desktop
Read our full FanDuel review, or claim the offer here.
2. DraftKings
DraftKings is based in Boston, and its sportsbook has been live in Massachusetts since the first day. It posts a long list of daily odds boosts and goes deep on player props for the NFL and NBA.
Every bet earns credit in Dynasty Rewards.
- Welcome offer: Spend $5, Get $200 in Bonus Bets + 3 Months of NBA League Pass
- Live in Massachusetts since: March 10, 2023
- Best for: Odds boosts and deep prop menus
- Apps: iOS, Android and desktop
Read our full DraftKings review, or claim the offer here.
3. BetMGM
BetMGM's online license is tied to MGM Springfield, which also runs a BetMGM retail sportsbook, and the brand signed on as the Red Sox's betting partner in 2023. Bets earn BetMGM Rewards points that you can use at MGM properties.
Edit My Bet lets you change a parlay after you place it.
- Welcome offer: Up to $1,500 in Bonus Bets Paid Back if Your First Bet Does Not Win
- Live in Massachusetts since: March 10, 2023
- Best for: Red Sox fans and MGM Rewards members
- Apps: iOS, Android and desktop
Read our full BetMGM review, or claim the offer here.
4. Fanatics
Fanatics launched on May 25, 2023 with a license tied to Plainridge Park Casino in Plainville. Every bet earns FanCash, which you can spend on jerseys and gear or turn back into bets.
- Welcome offer: Bet $20, Get $350 in FanCash ($50 a Day for 7 Days)
- Live in Massachusetts since: May 25, 2023
- Best for: Earning FanCash on every bet
- Apps: iOS, Android and desktop
Read our full Fanatics review, or claim the offer here.
5. theScore Bet
theScore Bet is PENN Entertainment's app, licensed through Plainridge Park Casino. It has been live since launch day under three names: Barstool Sportsbook, then ESPN BET from November 2023, then theScore Bet from December 1, 2025.
Scores, news and stats from theScore app sit next to your bets, so you can follow a game and bet on it in one place.
- Welcome offer: Use Code GETOFFER: $1,000 First Bet Reset Paid in Bonus Bets
- Live in Massachusetts since: March 10, 2023, as theScore Bet since December 1, 2025
- Best for: Following scores and betting in one place
- Apps: iOS, Android and desktop
Read our full theScore Bet review, or claim the offer here.
6. Sleeper
Sleeper puts real-money picks one tab away from the fantasy leagues many players already run in the app, with injury insurance on NFL, NBA and MLB picks. After the attorney general's February 2024 letter, Sleeper's Where Can I Play page lists Massachusetts for its peer-to-peer PicksVS game, open to players 21 and older.
- Welcome offer: Use Code GETOFFER: Get $20 Free + 100% Deposit Match up to $100
- Best for: Peer-to-peer picks inside your fantasy league app
- Apps: iOS and Android
Read our full Sleeper review, or claim the offer here.
7. Dabble
Dabble entries can be public, so you can copy another player's slip in a tap, and a Banter chat runs beside each game. Its state page lists Massachusetts as peer-to-peer, the format the attorney general has required of pick'em apps here since 2024.
- Welcome offer: Play $10, Get $20 in Bonus Cash
- Best for: Social pick'em with one-tap copy entries
- Apps: iOS and Android
Read our full Dabble review, or claim the offer here.
8. Betr
Betr Picks lets you stack 2 to 10 More or Less player picks, with the multiplier rising as you add more. Betr closed its real-money sportsbook in Massachusetts in February 2024, but Betr Picks still lists the state on its official availability page.
- Welcome offer: Four No Sweat Tokens, Up to $200 Back in Betr Bucks if Your Entries Miss
- Best for: Big multipliers on stacked player picks
- Apps: iOS and Android
Read our full Betr review, or claim the offer here.
9. ParlayPlay
ParlayPlay keeps pick'em simple with higher or lower calls on player stats, insured entries and free weekly contests with cash prizes. In Massachusetts it offers its peer-to-peer Rumble contests, and players here must be 21.
- Welcome offer: Use Code GETOFFER: Get $5 Free, No Deposit Required + 100% Deposit Match up to $100
- Best for: Peer-to-peer Rumble contests and free weekly games
- Apps: iOS, Android and desktop
Read our full ParlayPlay review, or claim the offer here.
10. Underdog
Underdog is best known for Best Ball and pick'em, but in Massachusetts its state eligibility page lists only Prediction Picks, its sports contracts on a CFTC-regulated exchange. Pick'em and Best Ball drafts are not offered here.
- Welcome offer: Use Code GETOFFER: Play $10, Get $50 in Bonus Entries
- Best for: Sports prediction picks from a fantasy brand
- Apps: iOS, Android and web
Trading involves risk, including total loss on positions
Read our full Underdog review, or claim the offer here.
11. Kalshi
Kalshi lets you buy Yes or No on games, rate decisions and weather at 1 to 99 cents, with limit orders at your own price. Attorney General Andrea Campbell won a preliminary injunction against Kalshi in early 2026, but an appeals judge stayed it, and Kalshi keeps serving Massachusetts while the Supreme Judicial Court decides the case.
- Welcome offer: Sign Up With Code TAPIN, Trade $25 and Get $25
- Best for: No-vig contracts and limit orders
- Apps: iOS, Android and web
Read our full Kalshi review, or claim the offer here.
12. Polymarket US
On Polymarket US in Massachusetts you trade elections, the economy, crypto and pop culture, and limit orders that fill earn a maker rebate. Its federal case against Massachusetts is paused until the state's highest court rules on Kalshi, and the state agreed not to enforce its betting laws against Polymarket during the pause.
- Welcome offer: Use Code GETOFFER: Deposit $10, Get a Free $25 to Trade
- Best for: Politics, finance and culture markets
- Apps: iOS, Android and web
Sports contracts are not offered in Massachusetts; its other markets are.
18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.
Read our full Polymarket US review, or claim the offer here.
13. Novig
Novig is a sports-only exchange where pregame straight trades are commission-free and you can set your own price with Make orders. Massachusetts agreed in August 2026 not to enforce its sports betting laws against Novig while Novig's federal case is on hold.
- Welcome offer: Use Code GETOFFER: Deposit $10, Get $50 in Trade Credits
- Best for: Commission-free trades on Boston sports
- Apps: iOS, Android and web
Read our full Novig review, or claim the offer here.
14. ProphetX
ProphetX is a peer-to-peer sports exchange with its own CFTC-approved clearing house, a 2% fee on net winnings, 0% on parlays and no limits on winning players. Celtics, Bruins, Red Sox and Patriots games are on the board, and Massachusetts has taken no action against ProphetX.
- Welcome offer: Sign Up With Code GETOFFER: Trade $40, Get $40 in Trading Bonus
- Best for: Celtics, Bruins and Red Sox contracts at low fees
- Apps: iOS, Android and web
Read our full ProphetX review, or claim the offer here.
15. Fliff
Fliff gives you a full sportsbook menu, from spreads to same game parlays, without staking your own money: Fliff Coins are for fun and Fliff Cash can be redeemed after one playthrough. Sweepstakes play is still legal in Massachusetts, and Fliff's official rules include the state.
- Welcome offer: Use Code GETOFFER: Get Up to $250 in Free Play on Your First Purchase
- Best for: Sportsbook-style lines without staking your own cash
- Apps: iOS, Android and web
Read our full Fliff review, or claim the offer here.
16. ReBet
ReBet, from Hanover, New Hampshire, is a social sportsbook and casino where you can copy a friend's parlay or challenge them head to head. It uses ReBet Coins and ReBet Cash instead of cash bets, and Massachusetts is not among the states its official rules exclude.
- Welcome offer: Use Code GETBONUS: 100% Purchase Match up to $100 in ReBet Cash
- Best for: Copying and challenging friends' picks
- Apps: iOS, Android and web
Read our full ReBet review, or claim the offer here.
17. Courtside
Courtside puts sports picks, player pick'em, arcade games, a social casino and card rips in one free-to-play wallet, with leaderboards for wins and streaks. Courtside's state list includes Massachusetts, and sweepstakes apps remain legal here because the proposed ban stalled with the iGaming bill in the State House.
- Welcome offer: Use Code GETOFFER: Spend $10, Get 50 in Free Picks
- Best for: Several free-to-play games in one wallet
- Apps: iOS and Android
Read our full Courtside review, or claim the offer here.
18. Onyx Odds
Onyx Odds streams games inside the app so you can pick live, and you can set a player prop to your own line. Its sweepstakes rules include Massachusetts, and you play with Onyx Coins and Onyx Cash rather than cash stakes.
- Welcome offer: Use Code GETOFFER: Spend $10, Get 50 in Bonus Picks
- Best for: Custom prop lines and live picks
- Apps: iOS, Android and mobile web
Read our full Onyx Odds review, or claim the offer here.
How to sign up with a Massachusetts sportsbook
- Pick a sportsbook from this guide and tap its offer link.
- Choose Join or Sign Up and enter your name, date of birth, address, email and the last four digits of your Social Security number.
- Allow location access. The app confirms you are inside Massachusetts before it lets you bet.
- Upload a photo of your ID if the app asks for one.
- Make a first deposit with a debit card, online banking, PayPal or another method the book accepts. Credit cards are not allowed in Massachusetts.
- Opt in to the welcome offer if it needs an opt-in, then place your first bet.
How to place a bet in Massachusetts
- Open the app and pick a sport, a league and a game.
- Tap the odds for the bet you want: a moneyline, spread, total or player prop.
- Enter your stake. The bet slip shows what you would win.
- Check the slip, then tap Place Bet.
- Track the bet under My Bets, where you can also cash out early if the book offers it.
Massachusetts sports betting at a glance
| Online sports betting | Legal, live since March 10, 2023 |
| Retail sportsbooks | Yes, at the three casinos and Raynham Park |
| Minimum age | 21 |
| Regulator | Massachusetts Gaming Commission |
| Online sportsbooks live | 7 |
| Tax on winnings | Flat 5% state income tax |
| College betting | No Massachusetts teams except in tournaments; no college player props |
| Where you can bet | Anywhere inside Massachusetts |
Sports betting law in Massachusetts
Governor Charlie Baker signed H.5164, An Act Regulating Sports Wagering, on August 10, 2022. The law put the Massachusetts Gaming Commission in charge and created three kinds of license: one for the casinos, one for racetracks and simulcast centers, and one for online sportsbooks. Up to 15 online licenses are allowed, some tied to a casino and the rest awarded by application. Online books pay a 20% tax on revenue, and bettors cannot fund accounts with a credit card.
The casino sportsbooks took their first bets on January 31, 2023 and the apps followed on March 10, 2023. Betr and WynnBET left in early 2024 and Bally Bet arrived in July 2024, which leaves seven online books today. The commission has since moved operators to five-year licenses, and from June 1, 2026 a sportsbook that limits your account has to tell you why within 48 hours.
Lawmakers keep debating tighter rules. A Senate bill that would ban prop and in-game bets and raise the online tax cleared a committee in March 2026, but it is a proposal, not law. Online casino games are still not legal in Massachusetts.
Massachusetts teams to bet on
Boston has a team in every major league except the WNBA, and the state's college rules matter if you follow Boston College or UMass.
- New England Patriots (NFL): Went 14-3 in Mike Vrabel's first season and reached Super Bowl LX, where they lost to the Seattle Seahawks. Vrabel was named NFL Coach of the Year.
- Boston Celtics (NBA): Won the 2024 title, the franchise's 18th. Jayson Tatum came back from a torn Achilles in March 2026.
- Boston Red Sox (MLB): Made the 2026 playoffs as a wild card and lost the Wild Card Series to the Yankees.
- Boston Bruins (NHL): Made the playoffs with 100 points in Marco Sturm's first season as coach (2025-26).
- New England Revolution (MLS): Play at Gillette Stadium. Marko Mitrovic became head coach in November 2025.
- Boston Legacy FC (NWSL): Played their first season in 2026.
- Boston College and UMass (college): You can bet on them only in a tournament of four or more teams, and props on college players are off the board everywhere.
Responsible gambling in Massachusetts
Set a budget before you bet and use the deposit, wager and time limits every licensed app offers. If gambling stops being fun, call the Massachusetts Problem Gambling Helpline at 1-800-327-5050. It is free and answers 24 hours a day. The Gaming Commission's PlayWell program, which replaced GameSense in March 2026, has advisors at the casinos who can talk you through your options.
The commission also runs a Voluntary Self-Exclusion program that covers casinos, retail and online sports betting and the iLottery. You choose one, three or five years, and after a shorter term you can choose lifetime. You can sign up with a PlayWell advisor or with the commission's form.
FAQs
Is online sports betting legal in Massachusetts?
Yes. Online sports betting has been legal and live since March 10, 2023, regulated by the Massachusetts Gaming Commission. Seven online sportsbooks are licensed.
How old do you have to be to bet on sports in Massachusetts?
You must be 21 to bet with a Massachusetts sportsbook. Pick'em and prediction apps set their own age, and several use 21 in Massachusetts.
Which Massachusetts sportsbook should I download first?
For most people in Massachusetts we would start with FanDuel: it is easy to use and strong on same game parlays. DraftKings is a close second if you like odds boosts and deep prop menus.
Can you bet on college sports in Massachusetts?
Yes, with limits. You can bet on games involving Massachusetts colleges such as Boston College only when they play in a tournament of four or more teams, like March Madness. Bets on individual college players are not allowed for any school.
Do you pay tax on sports betting winnings in Massachusetts?
Yes. Winnings are taxable income for federal and state purposes, and Massachusetts taxes them at its flat 5% rate, with a 4% surtax on very high incomes. Losses with Massachusetts-licensed sportsbooks can offset winnings from those same books. Keep records and report all winnings.
Can I use a credit card at a Massachusetts sportsbook?
No. Massachusetts law bans funding a sportsbook account with a credit card. Debit cards, online banking and PayPal are the usual options.
Can visitors bet in Massachusetts?
Yes. You do not need to live in Massachusetts, only to be inside the state when you bet. The app checks your location before every bet.
Hope is here. Call 1-800-327-5050 or visit gamblinghelplinema.org. Must be 21+. Connect with a PlayWell Advisor at PlayWell.org. Play with balance. Play for fun. Play well.
