Tax Treatment Differences Surface for 2026 World Cup Prediction Market Bets

As the 2026 FIFA World Cup unfolds across venues in the United States, Canada, and Mexico, observers note that Americans placing wagers through prediction markets such as Polymarket and Kalshi encounter distinct federal tax considerations compared to those using traditional sportsbooks. These platforms structure bets as event contracts or derivative-like instruments, which opens pathways for treating losses as fully deductible investment expenses while winnings may qualify for capital gains rates in some cases. Traditional sports betting winnings, by contrast, fall under gambling income rules that limit deductions to the amount of winnings reported and require specific record-keeping thresholds.

Event Contracts Versus Standard Wagering Structures

Prediction markets operate by allowing participants to buy and sell shares in specific outcomes, with each share priced between zero and one dollar based on perceived probabilities. When an event resolves, shares tied to correct predictions pay out at face value while incorrect ones expire worthless. This mechanism aligns the activity more closely with securities trading or commodity contracts than with casino-style bets placed at licensed sportsbooks. Data from market operators shows increased trading volume tied directly to World Cup matches throughout the summer of 2026, reflecting broader participation in these contract-based platforms.

Traditional sportsbooks report winnings above certain thresholds to the IRS on Form W-2G, and taxpayers must include those amounts as ordinary income. Losses from sportsbook activity receive treatment only as itemized deductions subject to the two-percent floor that applies to miscellaneous expenses in many filing situations. Prediction market participants, however, often receive Form 1099-B or similar documentation that frames the activity as investment activity, potentially allowing net losses to offset other capital gains or even ordinary income under specific circumstances.

Current IRS Position and Resulting Uncertainty

The Internal Revenue Service has not released targeted guidance addressing the classification of prediction market contracts used for sports or entertainment events. Without formal rulings or regulations, taxpayers must rely on general principles governing swaps, options, and other derivative contracts when determining how to report activity. Tax professionals point out that this absence of specific instructions creates filing ambiguity for individuals who combined substantial winning and losing positions during the tournament.

Market participants who treat their activity as investment trading typically track cost basis for each contract purchased and sold. Gains realized upon resolution receive reporting as short-term or long-term capital gains depending on holding period, while realized losses can offset gains elsewhere on Schedule D. Those who instead classify activity as gambling must aggregate all winnings and can deduct only an equivalent amount of losses when itemizing. The distinction carries practical consequences for filers who experienced net losses yet generated gross winnings during the World Cup cycle.

Reporting Requirements and Documentation Practices

Operators of prediction markets issue transaction histories that detail each contract purchase, sale, and settlement. Users compile these records to calculate realized gains and losses for the tax year. Observers note that maintaining contemporaneous logs of every trade becomes essential because the IRS may request supporting documentation during audits. Some participants also retain screenshots of market prices at the time of each transaction to establish holding periods and cost basis.

State tax authorities have not uniformly aligned with federal treatment, leaving additional layers of complexity for residents of states that conform to federal definitions of income. Individuals who file in multiple jurisdictions face the task of reconciling potentially divergent reporting rules when prediction market activity spans teh World Cup period. Professional tax preparers advise clients to segregate prediction market transactions from traditional sportsbook activity within their records to avoid commingling that could trigger questions during review.

Broader Context of Rising Prediction Market Volume

Participation in event-contract platforms expanded noticeably during major international tournaments, with World Cup fixtures driving measurable increases in daily trading activity through mid-2026. The structure of these markets permits users to exit positions before resolution by selling contracts to other participants, a feature absent from most sportsbook offerings. This liquidity element reinforces the investment-like character of the activity for those who actively manage positions throughout the tournament.

Tax software providers have begun incorporating categories that allow users to import prediction market transaction files directly, reducing manual entry errors. These tools apply capital gains treatment by default while offering toggles for users who prefer to classify activity differently. Accountants who specialize in gaming-related returns report receiving more inquiries from clients who combined prediction market and sportsbook positions during the same tax year.

Conclusion

The absence of dedicated IRS guidance on prediction market taxation leaves participants navigating established rules for contracts and investments rather than gambling-specific statutes. Those who structure activity through platforms such as Polymarket and Kalshi during the 2026 World Cup therefore encounter different reporting pathways and deduction possibilities than users of conventional sportsbooks. Taxpayers who maintain detailed transaction records and consult qualified professionals position themselves to apply the treatment most consistent with their overall filing circumstances while the regulatory landscape remains unchanged.