Are Prediction Markets Legal in Massachusetts?

Last updated August 16, 2026. Snapshot — not legal advice.

As of August 16, 2026, the legality of prediction markets in Massachusetts is unresolved — litigation is ongoing with no final ruling yet.

Prediction markets in Massachusetts

Contested — litigation pending

A Suffolk Superior Court judge granted the Attorney General a preliminary injunction against unlicensed sports event contracts (Commonwealth v. Kalshi, January 2026), but it is stayed while the Supreme Judicial Court reviews the case on direct appeal, so the platform still operates in-state pending a decision.

Litigation affecting Massachusetts

Commonwealth of Massachusetts v. KalshiEX LLCPreliminary injunction granted (January 2026); Massachusetts SJC took the case on direct review and heard argument in May 2026.

Injunction granted (stayed pending SJC review)

Sports betting & gambling in Massachusetts

Legal — Online & Retail

Legalized 2022; retail January 2023, statewide mobile March 2023 The market is regulated by the Massachusetts Gaming Commission. Tribal gaming: Minor (Mashpee Wampanoag).

The federal-vs-state fight

Every entry in this fight turns on the same question: does a prediction-market platform's federal regulation by the CFTC preempt a state's gambling law, or does the state retain authority to restrict it? Courts around the country are answering that question differently — sometimes for the platform, sometimes for the state — and almost every ruling so far is preliminary and under appeal. Treat this page as a snapshot, not a final word.

This page is informational, not legal advice. Nearly every litigation entry referenced here is a preliminary ruling under appeal. Always verify a platform's current, location-specific eligibility directly with the venue before relying on this page.