A new CFTC swap rule just landed at the White House, and it could decide who gets to regulate Kalshi and Polymarket for good. The agency sent two linked proposals to the Office of Management and Budget on September 28, 2026. Together they try to settle a question courts have been fighting over for more than a year: are prediction market contracts federally regulated swaps, or are they gambling products governed by the states?
Think of an event contract as a simple yes-or-no ticket. You pay a price for “yes” or “no” on something measurable, like whether it will rain in New York tomorrow, whether a particular senator wins reelection, or whether inflation comes in above a certain number. The contract pays out $1 if you’re right and nothing if you’re wrong. That simple structure is exactly why regulators keep arguing over whether it’s a financial instrument or a bet.
What the Two Rules Actually Say
The first rule is a proposal, not yet final. It would expand the legal definition of a “swap” to explicitly include event contracts, the yes-or-no bets that make up most of Kalshi and Polymarket’s business. Swaps fall under the CFTC’s exclusive federal authority, so this would pull event contracts out of state gambling law.
The second rule moves in the opposite direction. It’s an interim final rule, meaning it can take effect once published instead of waiting out a comment period first. This one excludes “casino-style gambling products” from the swap definition, drawing a line between slot-machine-style contracts and contracts tied to real-world events like elections or economic data.
The CFTC didn’t start this fight in September. In March 2026, it opened a broader rulemaking covering prediction markets generally. In June, it joined the SEC in a joint request for public comment on how “swap” and “security-based swap” should be defined going forward. CFTC Chairman Michael Selig framed that request as a chance to fix “longstanding ambiguities within Title VII of Dodd-Frank that have stifled fair competition and responsible innovation.” The two rules sent to the White House in September are the direct follow-through on that process.
Both proposals carry official tracking numbers. The proposed rule is RIN 3038-AF82. The interim final rule is RIN 3038-AF81. Federal reviewers logged both submissions on September 28, and the review record is public on the government’s own rulemaking tracker.
Why the Word “Swap” Decides Everything
Nothing about these contracts changes on the trading screen. A bet on a Fed rate decision still looks exactly like a bet on a Fed rate decision. What changes is who gets to decide whether that bet is legal in a given state.
Swaps are federal products. The CFTC has exclusive jurisdiction over them, and no state gambling regulator can override that. Gambling products work differently, since states set their own rules, and several have already tried to shut Kalshi’s and Polymarket’s sports contracts out entirely.
That’s the entire fight in one sentence. If event contracts count as swaps, state gambling law mostly stops applying to them. If they don’t, states keep their leverage. In practice, that’s why fights over Kalshi’s access in places like Nevada, Washington, and New York keep flaring up even as the federal rule stays unfinished.
The Circuit Split Making This Urgent
Federal appeals courts can’t agree on the answer, and that disagreement is likely why the CFTC is moving now. The Sixth Circuit ruled on September 25 that Kalshi hadn’t proven its sports contracts qualify as swaps. The Ninth Circuit sided with Nevada regulators in August. The Third Circuit went the other way in April, backing Kalshi against New Jersey.
New Jersey has already asked the Supreme Court to step in. We looked at a similar outcome in the Tenth Circuit’s Utah ruling, where Kalshi lost its bid to keep operating while the state’s gambling law took hold. Three circuits, three different answers, one open question.
A clear federal rule would give every court the same yardstick to apply. That’s a plausible reason the CFTC pushed its own rulemaking forward instead of waiting on the justices.
Not everyone thinks the rulemaking settles anything fast. Investor Vanessa Grellet of Arche Capital said the agency “has not been shy about that positioning,” but warned that a Supreme Court ruling “could supersede that rulemaking” regardless of how it turns out.
What It Means for Traders
Nothing about how Kalshi or Polymarket work changes today. Contracts still list, trade, and settle the same way they did last week.
What’s at stake is which states can still block access. If the swap definition lands in the CFTC’s favor, state bans and geofencing fights lose much of their legal footing. If it doesn’t, the current patchwork of different rules in different states keeps going.
This isn’t the agency’s first attempt to carve out room for prediction markets under federal law. Earlier in 2026, a separate CFTC exemption opened a narrower path for software providers serving these platforms. The new rules aim much higher, at the legal status of the contracts themselves rather than the tools built around them.
What Happens Next
The proposed rule still needs a public comment period, likely 30 to 60 days once it’s formally published, before the CFTC can finalize anything. The interim final rule on casino-style exclusions moves faster, since it can take effect right after publication, with objections collected afterward rather than before.
The court fights don’t pause for any of this. The Supreme Court hasn’t agreed to hear the New Jersey case, and even if it does, a ruling likely wouldn’t arrive before mid-2027. Until one of these tracks produces a final answer, expect the same uneven map: legal in some states, blocked in others, with the federal rulebook still being written underneath it.
