Prediction market tax reporting uncertain amid IRS silence
Prediction market traders on platforms like Kalshi and Polymarket face uncertain tax obligations because the IRS has not issued specific guidance on how event-contract profits should be reported. Without dedicated rules, participants must fit their activity into existing frameworks that may classify gains as ordinary income, capital gains, or gambling winnings. The gap leaves traders guessing at year-end about their true liabilities.
Kalshi and Polymarket traders now face a double uncertainty: state courts may void their contracts as gambling, and the IRS may tax them as gamblers too. If winnings fall under wagering rules rather than capital-gains treatment, tax bills rise sharply and reporting logistics multiply. The IRS silence mirrors the regulatory vacuum the CFTC is struggling to fill. Every month without guidance deepens the exposure for active traders who must file estimated taxes without knowing the rate.
Platforms bear the customer-service burden of explaining risks they cannot quantify. A future IRS ruling retroactive to 2026 trading would force amended returns across the user base. Congress could exploit the revenue ambiguity to impose new levies on event-contract volume. The tax question is no longer academic; it is a live liability that grows with every billion dollars in unmatched volume.