Is Polymarket legal in Illinois?
Yes, but contested: Polymarket's sports contracts face an open dispute in Illinois, with no restriction in force. The Illinois Gaming Board sent Polymarket US a cease-and-desist letter on January 27, 2026, and state law now requires a license for exchange-traded sports contracts. The state says it has a standstill with Polymarket like Kalshi's. No restriction is in force.
Updated Oct 2, 2026 · not legal advice
Reviewed by Vardan Khachatryan · Oct 2, 2026
The short answer
Yes, but contested: Polymarket's sports contracts face an open dispute in Illinois, with no restriction in force.
Illinois Gaming Board cease-and-desist letter to QCX LLC (Jan 27, 2026) – source
What you can trade from Illinois
Everything Polymarket lists nationally, including sports contracts: no restriction on them is in force in Illinois while the dispute continues. Other venues here: Kalshi (disputed), Robinhood (disputed), DraftKings (not covered), FanDuel (not covered).
What Illinois's regulator has said
No action against Polymarket specifically is on record; the status above rests on the cited source.
Change log
How this compares to Illinois sports betting
Where a state allows sports betting, sportsbooks are licensed and taxed by that state; an event contract on a federal exchange is neither, which is the whole dispute. The Illinois action concerns Polymarket's sports contracts. Whether a state may enforce at all is the question the federal appeals courts have split on. Illinois is outside the Third, Sixth and Ninth Circuits, the three appeals courts that have ruled. The question is unresolved there. Litigation tracker
Common questions
Is Polymarket legal in Illinois?
Yes, but contested: Polymarket's sports contracts face an open dispute in Illinois, with no restriction in force. The Illinois Gaming Board sent Polymarket US a cease-and-desist letter on January 27, 2026, and state law now requires a license for exchange-traded sports contracts. The state says it has a standstill with Polymarket like Kalshi's. No restriction is in force.
Can I still use Polymarket in Illinois for non-sports markets?
Yes. The Illinois dispute concerns sports contracts only.
Is this legal advice?
No. It summarises public rulings and actions, each cited. For a decision that matters, ask a lawyer licensed in the state.