What Makes a Contract a 'Swap,' and Why Every Kalshi Case Turns on It

The Commodity Exchange Act defines a swap, at 7 U.S.C. Section 1a(47), broadly enough to cover any agreement, contract, or transaction that provides for a payment or delivery 'dependent on the occurrence, nonoccurrence, or the extent of the occurrence of any event or contingency associated with a potential financial, economic, or commercial consequence.' That single clause is the hinge nearly every prediction-market lawsuit turns on.

If a sports-event contract, a mention-market contract, or an election contract qualifies as a swap, the CFTC's exclusive statutory jurisdiction over swaps traded on a designated contract market comes into play, and that jurisdiction is the basis for every preemption argument Kalshi and other operators have made against state gambling laws. If it does not qualify, the preemption argument never gets off the ground.

The statutory language does not obviously describe a bet on a football game. The Third Circuit's April 6, 2026 decision in KalshiEX LLC v. Flaherty closed that gap by reasoning that a sports event affects sponsors, advertisers, television networks, franchises, and local and national communities, so a contract settling on that event's outcome is 'associated with' a financial or commercial consequence even though the two parties to the contract are just betting on the result.

That reading is broad by design. Under it, almost any event with an economic ripple effect, and few public events have none, can support a contract that qualifies as a swap, which is precisely what has made the definition so contested outside the Third Circuit.

The Third Circuit's ruling affirmed a preliminary injunction barring New Jersey from enforcing its gambling law against Kalshi, applying both field preemption, because Congress gave the CFTC exclusive jurisdiction over swaps, and conflict preemption, because letting states regulate the same contracts differently would recreate the fragmented patchwork federal swap regulation was meant to displace.

But the same swap-classification question has not gone the same way everywhere. Federal district judges in Michigan have ruled against Kalshi and Polymarket on the underlying swap-definition question, directly in tension with the Third Circuit's holding, and a Utah federal court granted Utah summary judgment in August 2026 without even needing to resolve the swap question, finding instead that state and federal regulation of the same contracts can coexist. The Sixth Circuit heard consolidated oral arguments on the same issue in July 2026 and, as of this writing, has not yet ruled.

It is easy to read a headline about a court 'ruling against Kalshi' or 'ruling for Kalshi' as resolving the underlying legality of prediction markets. It usually does not. Most of these rulings turn on the narrower, prior question of whether the specific contract at issue is a swap under the CEA at all, a classification question that is logically separate from whether prediction markets are, as a policy matter, good or bad for consumers.

That separation matters because it means the same operator can win in one circuit and lose in another on the exact same product, simply because different courts read the same nine words of statutory text differently. Until an appellate split is resolved, by further circuit rulings or ultimately the Supreme Court, an operator's legal footing in this space depends as much on where a case is filed as on what the contract actually does.

A DCM designation from the CFTC does not itself answer whether a given contract type is a swap; it answers only that the exchange listing it is a registered venue. Whether a specific contract, a sports outcome, a mention market, a corporate KPI, actually falls within Section 1a(47)'s definition is a separate, contract-by-contract legal question that courts are still actively splitting on.

Any operator relying on federal preemption as a defense against state gambling enforcement should treat that defense as jurisdiction-dependent rather than settled, and should expect the answer to keep shifting until the swap-definition question reaches a court whose ruling binds the circuit, or circuits, where it operates.