Tax Notes article questions sports event contracts' gambling status for federal tax
A Tax Notes article by Seth Hanlon, Miles Johnson, Michael A. Kaercher, and Kyle Sweeney asks whether sports event contracts on prediction markets should be classified as gambling for federal tax purposes. The analysis appears in the publication's international corporate-tax coverage. No ruling, legislation, or specific platform is named in the available text. The piece does not resolve the question but adds a tax dimension to the ongoing legal debate over how regulators and courts treat these instruments.
The tax framing matters because gambling losses face strict deduction limits that derivative losses do not. If the Internal Revenue Service ultimately adopts this classification, traders on Kalshi and Polymarket would face higher effective tax rates and reduced loss offsets, changing the value proposition for participants. Platforms may see reduced volume if after-tax returns shrink.
This tax analysis arrives as state courts and the NFL already push the gambling label for regulatory purposes; a parallel tax doctrine would strengthen that framing across two federal domains. The article does not carry enforcement weight, but it signals where professional tax analysis is heading. If Treasury incorporates this view in future guidance, platforms would need to prepare income reporting that distinguishes gambling-derived gains from other contract profits.
The gambling-framing theory now spans regulatory, litigation, and tax domains, with the NFL pressing it in federal court while state attorneys general use it to strip CFTC preemption from platforms like Kalshi and Polymarket.