Is Polymarket US legal in Massachusetts?
Yes, today. Polymarket US is available in Massachusetts, but Massachusetts has acted over its sports event contracts: a court case over them is ongoing. Polymarket US told us in writing on October 23, 2026 that it is available in every state except Nevada. No order currently blocks access in Massachusetts; that could change. This page reports what Polymarket US and the state have done; it is not a legal conclusion, and courts are still deciding how state law applies to event contracts.
Verified October 23, 2026
Polymarket US in Massachusetts, by market class
| Market class | Status | Source | Verified |
|---|---|---|---|
| sports event contracts | Available; state action pending | court filing | August 4, 2026 |
| election and politics markets | Available | Polymarket US (operator) | October 23, 2026 |
| economics markets | Available | Polymarket US (operator) | October 23, 2026 |
| weather markets | Available | Polymarket US (operator) | October 23, 2026 |
| entertainment markets | Available | Polymarket US (operator) | October 23, 2026 |
Massachusetts races on Kalshi and Polymarket US, after fees
as of Oct 24, 3:00 PM ET · ask + taker fee, per contract| Race · contract | Kalshi | Polymarket USPolymarketPartner | Cheaper |
|---|---|---|---|
| Massachusetts Senate · Ed Markey | 98.1¢ | 99.1¢ | Kalshi · $0.93/100 |
Polymarket US is the venue US traders use. Ranked by Kalshi volume; badged by price only. Where it’s cheapest today →
Kalshi in Massachusetts
Kalshi remains available to Massachusetts traders today as a CFTC-regulated exchange covering sports and many other markets, though the state is contesting its sports event contracts in court and that could change. Is Kalshi legal in Massachusetts? →
Frequently Asked Questions
Is Polymarket US legal in Massachusetts?
Polymarket US is available in Massachusetts today. Polymarket US told us in writing on October 23, 2026 that it is available in every state except Nevada. Massachusetts has acted over its sports event contracts (a court case over them is ongoing), and no order currently blocks access. This page reports what Polymarket US and the state have done; it is not a legal conclusion, and courts are still deciding how state law applies to event contracts.
What can I trade on Polymarket US in Massachusetts?
All five classes are listed as available: sports event contracts, election and politics markets, economics markets, weather markets, and entertainment markets. The state action concerns sports event contracts.
Is Kalshi available in Massachusetts?
Kalshi remains available to Massachusetts traders today as a CFTC-regulated exchange covering sports and many other markets, though the state is contesting its sports event contracts in court and that could change.
Can I use Polymarket.com from Massachusetts?
No. Polymarket.com is the international site and is view-only for US users; US traders use Polymarket US. Where our pages show Polymarket.com data, it carries the label "US Users: Featured Trade Not Available; Informational Use Only."
How old do I have to be to use Polymarket US in Massachusetts?
18 or older, with identity verification at sign-up.
Not legal advice. This page reports what Polymarket US and Massachusetts officials have said and done, with the date we last checked each source. Check the Polymarket App for eligibility before you sign up.