Ohio Moves to Fine Kalshi $5M Over Sports Contracts

The Ohio Casino Control Commission has issued a notice of intent to fine prediction market platform Kalshi $5 million, arguing the company ran sports event contracts in the state without ever holding a gambling licence. It is one of the most aggressive enforcement moves any state regulator has taken against a prediction market operator, and it lands at a moment when the legal status of these platforms remains deeply contested across the US.

Kalshi is a New York-based prediction market platform that lets users trade contracts tied to real-world outcomes — sports results, election outcomes, financial events, weather, and more. The company operates under federal oversight from the Commodity Futures Trading Commission, which it has long cited as the basis for its authority to offer these products nationally without seeking individual state licences.

Ohio disagrees. And now it has put a number on that disagreement.

What Ohio Is Alleging

The notice, signed by OCCC Executive Director Matthew Schuler and delivered to Kalshi’s legal team on April 14, lays out several specific complaints. The core claim is straightforward: Kalshi’s sports contracts function as wagers on sporting outcomes, which places them squarely under Ohio gaming law. The commission says the company has operated in the state since January 2025 without a licence issued by Ohio regulators.

But the filing goes further than the licensing question alone. Ohio also alleges Kalshi accepted users between the ages of 18 and 20, a group that state law bars from legal sports betting. Roughly 35,000 users in Ohio are tied to the platform, though the commission did not specify how many fell into that age bracket.

The commission also took issue with Kalshi’s self-exclusion setup. Licensed operators in Ohio must participate in the Time Out Ohio program, which allows users to exclude themselves from gambling platforms for periods ranging from one year to a lifetime. Kalshi’s system, regulators said, does not meet that standard. For a regulator that treats responsible gambling infrastructure as a baseline requirement, this is not a minor complaint.

The notice put it plainly: by continuing to operate without seeking licensure, Kalshi had effectively blocked the commission from assessing whether the company or its key employees met Ohio’s suitability standards.

A Court Loss That Cleared the Way

Ohio’s ability to push this far was not inevitable. Kalshi had sought a federal injunction that would have stopped the state from taking action while litigation played out. In March, Federal Judge Sarah Morrison rejected that request.

That ruling was significant. It allowed Ohio to continue asserting regulatory authority over Kalshi without waiting for the broader legal dispute to resolve. Judge Morrison reportedly cited a duty to avoid absurdity in denying the injunction, a pointed framing that gave little comfort to Kalshi’s position.

The Kalshi Ohio fine notice came shortly after, and Ohio Attorney General Dave Yost added public pressure of his own, posting that he would not bet on Kalshi remaining active in the state. The company has not indicated any plans to exit Ohio.

The Bigger Picture

Kalshi’s growth makes the stakes clear. The platform’s monthly user base grew 8.5 times over to reach 5.1 million users between early 2025 and mid-February, and estimates put its annualised revenue from sports contracts at $1.3 billion. Around 90% of that revenue is tied to sports-related trading.

That scale is precisely why state regulators are paying attention. Prediction markets have expanded rapidly, and platforms like Kalshi now handle volumes that rival traditional sportsbooks in some categories. Several states have pushed back, arguing that when contracts track sporting outcomes and pay out accordingly, the product is betting regardless of what it is called.

Kalshi’s position has always been that federal CFTC authorisation supersedes state gambling law. Ohio is one of several states that reject that view entirely. Arizona went further and pursued criminal charges against the platform, though a federal court issued a temporary restraining order blocking those proceedings after the CFTC intervened.

What Comes Next

If Ohio confirms the $5 million sanction, it would mark the first known fine issued by a state gambling regulator against Kalshi. The company has the right to request a hearing and challenge the proposed penalty before it becomes final.

The outcome will carry weight beyond Ohio’s borders. Courts and regulators across the country are watching how this classification question resolves, because the answer determines whether prediction market platforms need to seek state licences everywhere they operate or can rely on federal oversight as a nationwide pass. That question has no settled answer yet, and the Kalshi Ohio fine dispute is now one of the cases most likely to shape it.