A federal appeals court ruled on April 6 that Kalshi’s sports contracts are legal “swaps” under the Commodity Exchange Act, putting the CFTC — not state gaming boards — in the driver’s seat on prediction markets. The Third Circuit went 2-1. The dissenting judge called it “a performative sleight meant to obscure the reality that Kalshi’s products are sports gambling.” That’s probably the most honest sentence written by anyone in this fight. The majority still ruled for Kalshi.
This is the most consequential legal development in the sports betting industry since PASPA was struck down in 2018. If you have money on a game, you should care.
What Kalshi Actually Offers Bettors
The pitch is straightforward: lower effective vig. During March Madness this year, Kalshi’s effective vig ran around 4.12–4.13%. DraftKings was at 4.34–4.52%. FanDuel was 4.45%. Fanatics was 4.48%. That gap compounds over a season’s worth of action.
Concrete example: the Pacers priced at 60% on Kalshi translates to roughly -150 equivalent. Same side on DraftKings? -165. That’s $7 extra per $100 win you’re leaving on the table every single time you take the chalk through a traditional book.
The asterisk — and it matters — is that Kalshi wasn’t always cheaper. During the NFL season last fall, their effective vig hit 4.77%, which is actually worse than the major books. This isn’t a guaranteed price advantage. It’s a competitive one, which means it exists when Kalshi is fighting for market share and may not exist permanently. Know what you’re getting into.
Polymarket has over 4,000 active sports markets and league deals with MLB, MLS, and the NHL. It’s crypto-native, though — more friction than most casual U.S. bettors want to deal with.
Why the Sportsbooks Are Terrified
DraftKings, FanDuel, Fanatics, and Bet365 have collectively thrown $48 million into a super PAC called “Win for America.” The explicit goal: fund state legislative races to keep prediction markets illegal at the state level, even if the federal courts say they’re fine.
On March 23, Senators Schiff and Curtis introduced the “Prediction Markets Are Gambling Act.” Mick Mulvaney launched a “Gambling Is Not Investing” coalition on March 2. After PASPA fell, the sportsbooks spent years capturing state gaming frameworks one by one, building licensing moats that kept competitors out. Now a product has shown up that routes around all of it via federal jurisdiction, and they’re spending $48 million to make that illegal.
The cherry on top: DraftKings launched its own prediction market product on December 19. Thirty-eight states, CME Group infrastructure. The same company bankrolling the $48M PAC to kill prediction markets is now in the prediction market business. They don’t object to the product. They object to competition.
https://x.com/DustinGouker/status/2041148496775119162
The CFTC Ruling Changed Everything — For Now
The Third Circuit majority held that Kalshi’s sports contracts qualify as swaps under the CEA, giving the CFTC exclusive jurisdiction and cutting state gaming regulators out of the picture entirely. The Trump CFTC reinforced this on April 2 by filing federal lawsuits to bar states from regulating prediction markets independently.
There are conflicting rulings in Ohio, Nevada, and Maryland. This is headed to the Supreme Court. Nothing is settled. The legal landscape could look completely different in 18 months.
Right now the trajectory favors Kalshi. The incumbents know it — that’s why there’s a $48M PAC instead of a $4.8M one. When an industry spends that kind of money on state legislative races, they’re not playing defense on principle. They’re scared of a price war.
Bettors have spent years getting squeezed by books juicing every line and holding 5–6% on parlays. If a competitor with lower fees survives this legal and lobbying gauntlet, the whole market structure shifts. That’s what the sportsbooks are paying $48M to prevent.
Root for Kalshi. Not because they’re the good guys — they’re a business — but because competition on price is the only thing that’s ever actually helped bettors.
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