US taxpayers face significant uncertainty regarding whether profits from prediction markets like Kalshi and Polymarket should be taxed as investment income or as gambling winnings under federal law.

Key Points

• Prediction markets argue their event contracts are federally regulated financial derivatives, potentially qualifying for capital gains tax treatment.
• Traditional sportsbooks like DraftKings and FanDuel are taxed as gambling, which limits loss deductions and excludes them from standard tax benefits.
• Taxpayers using investment-style reporting may attempt to deduct losses fully or apply lower tax rates under Section 1256 of the tax code.
• The Internal Revenue Service has not issued formal guidance, leaving participants to navigate potential audit risks and tax penalties independently.
• Legal experts warn that courts historically classify activities based on economic substance rather than legal structure, favoring a gambling classification.

Why it Matters

The lack of clear IRS guidance creates a high-stakes tax environment for the growing number of Americans participating in prediction markets. Misclassifying these wagers could lead to significant back taxes and penalties if regulators eventually determine that these financial instruments are functionally equivalent to traditional sports betting.