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Polymarket US has agreed to stop offering new sports-related event contracts to Michigan customers.
The company must close any remaining sports positions before Nov. 26.
The Michigan Gaming Control Board announced the agreement Oct. 28. Polymarket joins Robinhood, Coinbase, and Kalshi in pulling back sports offerings in Michigan.
Michigan customers face Nov. 25 deadline for open sports contracts
Customers should review their open sports positions, especially those tied to future games, championships, or season-long outcomes that will not be decided before the November deadline.
Sports-event contracts let customers trade on outcomes such as whether a team will win a game. Customers can generally sell their positions before the outcome is determined, provided another trader is willing to buy.
Customers who sell before an event is decided may receive more or less than they originally paid. An early sale therefore does not guarantee they will recover their full purchase amount.
The MGCB announcement does not specify how Polymarket US will price the contracts it closes or explain the process for individual account-holders. Customers with outstanding positions should check notices in their accounts and contact Polymarket US support for details about how their holdings will be handled.
The announced restrictions concern sports-related event contracts. The MGCB did not describe a platform-wide shutdown or announce a deadline for customers to withdraw their account balances.
Robinhood and Coinbase already faced Michigan deadlines
Polymarket’s agreement follows Robinhood’s September withdrawal from Michigan sports contracts. Robinhood agreed to stop offering new contracts by the end of Sept. 9 and close remaining customer positions by Oct. 9.
Coinbase reached a similar agreement in October, covering sports contracts traded on KalshiEX and other designated contract markets. Coinbase had until Oct. 10 to stop offering new sports contracts and close remaining customer positions.
Michigan also secured a preliminary injunction barring Kalshi from offering, listing, or facilitating sports-related event contracts for anyone located in the state.
Polymarket’s appeal remains before the Sixth Circuit
The restrictions stem from a dispute over whether federally regulated event contracts are subject to Michigan’s gambling laws. Polymarket describes itself as an exchange regulated by the Commodity Futures Trading Commission, while Michigan maintains that offering sports wagering requires a state license.
“If you want to offer sports wagering to Michigan residents, you need a Michigan license,” MGCB Executive Director Henry Williams said.
Polymarket sued state officials in March, seeking to prevent Michigan from enforcing its gaming laws. The court denied its request for a preliminary injunction in June, and the company’s appeal remains pending before the Sixth Circuit.
The Michigan attorney general’s office warned Polymarket on Sept. 10 that it would take legal action unless the company stopped offering sports contracts to Michigan residents.
Under the latest agreement, approved by the US District Court for the Western District of Michigan, the state will refrain from enforcement action as long as Polymarket US complies.
Licensed Michigan sportsbooks remain available
Michigan residents can still place sports wagers through licensed online sportsbooks, including FanDuel, DraftKings, BetMGM, Caesars, Fanatics, and bet365.
The MGCB’s authorized provider list allows customers to verify a platform before registering or depositing money. It identifies approved providers and their casino or tribal partners, with direct links to authorized gambling websites.
Customers must be at least 21 to bet on sports or open an online wagering account in Michigan.
