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Sports Betting Was a State Business. Washington Just Took It.

A federal tax loophole is quietly moving America's $166 billion sports-betting market off state licenses and onto commodity exchanges — and on June 10, Washington gave it a rulebook.

Alpha One

09 Jul 2026 • 6 min read

Every state that legalized sports betting made the same bet: license the bookmakers, tax the handle, keep the revenue at home. For seven years, it worked. Americans wagered a record $166 billion in 2025, sportsbooks booked roughly $16.9 billion in gross gaming revenue, and states collected about $3.66 billion in taxes — New York alone pulling in $1.3 billion at a 51% rate.

Then a commodities exchange in New York City figured out that a football game is a tradable event, and that the agency regulating pork bellies and interest-rate futures does not answer to Albany, Trenton, or Nashville.

That is the entire story. Not the growth of gambling — the relocation of it, from a system of fifty state licenses into a single federal one that charges a fraction of the tax and answers to almost no one. On June 10, the federal government released the 267-page rulebook that decides whether that relocation becomes permanent. The traditional sportsbook industry read it and did not like what it saw.

The loophole is not a loophole. It's a jurisdiction.

Kalshi and Polymarket do not call themselves sportsbooks. They call themselves exchanges, and legally that is exactly what they are. A sportsbook takes your bet against the house at fixed odds. A prediction market matches you against another trader buying the opposite side of a contract — "Chiefs to win, yes/no" — that settles at $1 or $0. Functionally, to the person clicking the button, the two are indistinguishable. Regulatorily, they exist in different universes.

Sportsbooks live under state gaming law. Every state sets its own license, its own tax rate — anywhere from 6.75% to 51% of revenue — and its own consumer rules. Prediction markets live under the Commodity Exchange Act, regulated by the Commodity Futures Trading Commission as "event contracts." The CFTC claims exclusive federal jurisdiction, which means it asserts the power to preempt state gambling law entirely. A CFTC-registered exchange can offer sports contracts in all fifty states without asking a single state for permission.

The numbers show how fast the money followed the lighter regime. Kalshi ran roughly $39.7 billion in trailing volume by early 2026, and sports made up about 87% of it. Polymarket ran about $36.2 billion, with sports near 38%. These are not political-betting curiosities anymore. They are sportsbooks in everything but name — and they are barely taxed by comparison.

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The tax math is the whole war

Consider where a prediction market chooses to domicile. In North Carolina, a company like this pays the state's corporate income tax — 2.25%. A licensed sportsbook operating in that same state pays tax on its gaming handle or revenue at rates that start in the high teens and climb past 50% in the richest markets. Same wager, same bettor, same football game. One model hands the state a slice measured in cents on the dollar; the other hands over a controlling share of its margin.

The states have done the arithmetic, and they are furious. Analyses cited in the current fight estimate prediction markets have already diverted more than $570 million in potential state tax revenue. The American Gaming Association — the lobby for the licensed casino and sportsbook industry — has made this its top regulatory priority, arguing the exchanges are simply unlicensed gambling wearing a financial-markets costume to dodge state taxes and consumer protections. Nevada, Massachusetts, and Tennessee have gone to court to try to treat sports contracts as illegal betting inside their borders.

There is a bettor-side asymmetry too, and it matters for adoption. Win on DraftKings and you owe ordinary income tax on gambling winnings, often with a W-2G form generated automatically. Win on a CFTC-regulated exchange and your proceeds are generally treated as futures gains — eligible for the 60/40 capital-gains split regardless of how long you held the contract, with no routine reporting form. For a high-volume bettor, that is not a rounding error. It is a reason to switch platforms.

What Washington actually decided on June 10

For a year the direction of travel has been unmistakable. In January 2026, the CFTC's new chair, Michael Selig, withdrew a prior proposal that would have banned sports and political event contracts outright, and ordered staff to write "clear standards" instead. That was the tell: the federal posture shifted from should these exist to how do we supervise them.

The June 10 Notice of Proposed Rulemaking is the follow-through — 267 pages replacing categorical bans with a contract-by-contract "public interest" test. The thrust: most straight sports-outcome contracts, the moneyline and totals equivalents that mirror ordinary bets, are viewed as likely permitted. The riskier variants — contracts tied to individual player props, injuries, officiating calls, or pure games of chance — are flagged as likely prohibited, on integrity grounds. In plain terms, Washington has proposed to bless the core sports-betting business of the exchanges while trimming the edges most vulnerable to match-fixing.

That is a near-existential outcome for the state-licensed model. If the federal framework holds, a bettor in any state can legally trade the same games offered by their local sportsbook, on a platform taxed like a brokerage instead of a casino, with better tax treatment on the winnings. The state license stops being a gateway and starts being a handicap.

Why the incumbents can't just sit still

The tell that this threat is real is what the incumbents are doing about it. DraftKings and FanDuel — which together control roughly 70–80% of the licensed market, FanDuel leading with around 40% of revenue — are not waiting to be disrupted. They are launching their own event-contract products, positioning to migrate their own customers onto the federally regulated exchange model before someone else does it for them.

That is the quiet admission underneath the lobbying. Publicly, the licensed industry funds the AGA's campaign to have prediction markets declared illegal gambling. Privately, its two biggest players are building the escape hatch into the exact regime they're attacking — because if the CFTC framework wins, the company that owns the exchange rails wins, and the company still paying 51% in New York loses. The financialization of sports betting is not a threat the incumbents can defeat. It is one they are racing to join.

There is a deeper current here that reaches past sports. Once a football score is a federally regulated financial contract, the category has no natural edge. Elections, economic data, weather, corporate outcomes — the same machinery prices all of them. The parent company of the New York Stock Exchange has already put roughly $2 billion into Polymarket. The world's most serious market operators are not treating this as gambling. They are treating it as the birth of a new asset class, and sports is simply its largest, most liquid, most politically convenient on-ramp.

The bottom line

Sports betting was built as fifty separate businesses, each licensed and taxed by a state that guarded its cut. In under two years, a federal regulator and a handful of exchanges have built a parallel system that offers the same product, nationwide, at a fraction of the tax — and on June 10 that system got the closest thing yet to Washington's blessing. The states are fighting to claw back jurisdiction they may have already lost. The incumbents are hedging by joining the thing they're suing. And the bettor, who cannot tell the difference between a bet and a contract, is quietly being moved from one to the other.

The open question is no longer whether prediction markets are legitimate. It is who collects the tax when the whole country is trading the game — and right now, the answer is: not your state.

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