Massachusetts gambling law changes https://gamblingatlas.org/states/massachusetts/ New laws, launches, tax changes and enacted bills on gambling in Massachusetts. en-us Mon, 12 Oct 2026 12:00:00 GMT House passes historical horse racing machine authorization as part of a $561M economic development bill https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2026-07-08:House passes historical horse racing machine authorization a Wed, 08 Jul 2026 12:00:00 GMT Joint Committee on Economic Development and Emerging Technologies votes 11-0 to send H.4431 (iGaming/sweepstakes-ban bill) to study, effectively killing it for the 2025-2026 session https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2026-03-16:Joint Committee on Economic Development and Emerging Technol Mon, 16 Mar 2026 12:00:00 GMT Appeals court stays the Kalshi injunction pending appeal, allowing Kalshi to keep operating https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2026-02-01:Appeals court stays the Kalshi injunction pending appeal, al Sun, 01 Feb 2026 12:00:00 GMT Suffolk Superior Court grants the Commonwealth a preliminary injunction against Kalshi https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2026-01-20:Suffolk Superior Court grants the Commonwealth a preliminary Tue, 20 Jan 2026 12:00:00 GMT AG Andrea Campbell sues KalshiEX LLC in Suffolk Superior Court over unlicensed sports wagering https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2025-09-12:AG Andrea Campbell sues KalshiEX LLC in Suffolk Superior Cou Fri, 12 Sep 2025 12:00:00 GMT Rep. David Muradian files H.4431 to legalize MGC-regulated iGaming while banning sweepstakes casinos https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2025-08-18:Rep. David Muradian files H.4431 to legalize MGC-regulated i Mon, 18 Aug 2025 12:00:00 GMT Mashpee Wampanoag Tribe and the City of Taunton sign a memorandum of agreement on casino revenue sharing (2.05% of net slot revenue, performance-conditioned) https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2025-03-01:Mashpee Wampanoag Tribe and the City of Taunton sign a memor Sat, 01 Mar 2025 12:00:00 GMT Sen. John Keenan files Amendment 828 proposing to raise the online sports wagering tax from 20% to 51%; amendment does not take effect https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2024-05-23:Sen. John Keenan files Amendment 828 proposing to raise the Thu, 23 May 2024 12:00:00 GMT Mobile/online sports wagering launches statewide https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2023-03-10:Mobile/online sports wagering launches statewide Fri, 10 Mar 2023 12:00:00 GMT Retail sportsbooks go live at Encore Boston Harbor, MGM Springfield and Plainridge Park Casino https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2023-01-31:Retail sportsbooks go live at Encore Boston Harbor, MGM Spri Tue, 31 Jan 2023 12:00:00 GMT MGC approves the initial Sports Wagering Catalog of authorized events and wager types https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2023-01-26:MGC approves the initial Sports Wagering Catalog of authoriz Thu, 26 Jan 2023 12:00:00 GMT Governor Baker signs c.23N legalizing retail and mobile sports wagering https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2022-08-10:Governor Baker signs c.23N legalizing retail and mobile spor Wed, 10 Aug 2022 12:00:00 GMT St. 2022, c.220 Encore Boston Harbor opens (Category 1 resort casino) https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2019-06-23:Encore Boston Harbor opens (Category 1 resort casino) Sun, 23 Jun 2019 12:00:00 GMT Suffolk Downs ends thoroughbred racing, leaving Plainridge Park as the state's only live-racing venue https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2019-01-01:Suffolk Downs ends thoroughbred racing, leaving Plainridge P Tue, 01 Jan 2019 12:00:00 GMT MGM Springfield opens (Category 1 resort casino) https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2018-08-24:MGM Springfield opens (Category 1 resort casino) Fri, 24 Aug 2018 12:00:00 GMT Horse racing and simulcasting operations briefly halted after the Legislature misses the deadline to extend racing/simulcasting authorization https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2018-08-01:Horse racing and simulcasting operations briefly halted afte Wed, 01 Aug 2018 12:00:00 GMT Attorney General adopts 940 CMR 34.00 regulating daily fantasy sports contest operators https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2016-04-08:Attorney General adopts 940 CMR 34.00 regulating daily fanta Fri, 08 Apr 2016 12:00:00 GMT Plainridge Park Casino opens as the state's first licensed gaming facility (Category 2 slots) https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2015-06-24:Plainridge Park Casino opens as the state's first licensed g Wed, 24 Jun 2015 12:00:00 GMT Massachusetts and the Mashpee Wampanoag Tribe sign a revised Class III gaming compact for a Taunton resort casino https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2013-01-01:Massachusetts and the Mashpee Wampanoag Tribe sign a revised Tue, 01 Jan 2013 12:00:00 GMT Governor Patrick signs the Expanded Gaming Act (c.23K), authorizing up to 3 resort casinos and 1 slots facility https://gamblingatlas.org/states/massachusetts/#timeline event:MA:2011-11-22:Governor Patrick signs the Expanded Gaming Act (c.23K), auth Tue, 22 Nov 2011 12:00:00 GMT St. 2011, c.194 Massachusetts Lottery begins ticket sales https://gamblingatlas.org/states/massachusetts/#timeline event:MA:1972-03-22:Massachusetts Lottery begins ticket sales Wed, 22 Mar 1972 12:00:00 GMT Legislature creates the Massachusetts State Lottery https://gamblingatlas.org/states/massachusetts/#timeline event:MA:1971-09-27:Legislature creates the Massachusetts State Lottery Mon, 27 Sep 1971 12:00:00 GMT