Michigan regulator agrees Polymarket will withdraw sports contracts by 25 November

Michigan's gambling regulator, the Michigan Gaming Control Board (MGCB), has reached a court-approved deal with Polymarket. As a result, the platform will pull its sports event contracts from the state. The agreement also puts any enforcement action against the company on hold. New sports event contracts will no longer be offered in Michigan, and every existing contract must be settled by 25 November. For its part, the state pledged to refrain from enforcement so long as the company keeps to the terms.

The MGCB said the agreement with Polymarket is similar to recent agreements with Coinbase and Robinhood, and that it continues its action against what it described as sports wagering products disguised as federally regulated prediction markets. Michigan also holds a preliminary injunction preventing Kalshi from offering sports event contracts in the state.

MGCB executive director Henry Williams said: "Polymarket joining Kalshi, Robinhood, and Coinbase in stepping back from these unlicensed sports contracts shows that Michigan’s approach is working." He added: "We expect all operators to respect Michigan’s regulatory framework. If you want to offer sports wagering to Michigan residents, you need a Michigan license."

In March 2026, Polymarket filed a federal lawsuit against state officials. The aim was to stop Michigan from applying its gambling laws to prediction markets. A temporary restraining order was sought by the company and refused by the court that March; a preliminary injunction it requested was likewise turned down in June. The Sixth Circuit is now considering Polymarket's appeal of that decision.

Michigan Attorney General Dana Nessel said: "One by one, from Kalshi to Robinhood and Coinbase, and this latest agreement with Polymarket, we’re holding the national sports betting industry accountable to Michigan law." She said the state, alongside the MGCB, was protecting residents by ensuring gaming occurs in licensed and regulated ways, under the protections and safeguards afforded by the law.