Are Your Prediction Market Gains Taxable? What You Should Know Before You File

In recent years, prediction markets have grown significantly in popularity as investors, traders, and speculators seek to profit from forecasting real-world events. Platforms, such as Kalshi, Polymarket, and Robinhood, allow users to buy and sell contracts tied to outcomes ranging from elections and economic indicators to sports results, entertainment, weather, and numerous other areas.

One of the foundational principles of U.S. taxation is that taxpayers are generally taxed on all income unless a specific exclusion applies. Internal Revenue Code Section 61 defines gross income broadly as “all income from whatever source derived,” which includes gains from dealings in property and other forms of economic enrichment.

While many participants focus on their returns, the tax implications of prediction market activity are frequently overlooked. We provide an overview of prediction markets, key tax considerations, common reporting challenges, and practical next steps for taxpayers.

What Are Prediction Markets?

Prediction markets are exchanges or platforms where participants buy and sell contracts that derive their value from the outcome of future events. Contract prices fluctuate based on the market’s assessment of the probability that a specific event will occur.

How They Work:

• Users purchase contracts tied to a specific event outcome.
• Contract prices generally reflect the market’s implied probability of that outcome.
• Contracts formally settle when the event outcome is determined, but positions can be exited at any time, which may result in a gain or loss prior to final settlement.
• Participants realize gains or losses based on the difference between purchase price and the settlement value.

Tax Implications of Prediction Market Activity

Taxable income generally arises when a position is closed, sold, redeemed, or settled. Potential taxable events may include:

• Contract settlement
• Sale of a contract before settlement
• Receipt of bonuses or promotional incentives
• Other distributions from the platform

Questions taxpayers and their tax advisors may need to consider include:

• Does this activity constitute taxable income or loss?
• Is the gain or loss classified as investment activity or wagering activity?
• What was the holding period of the underlying contract?
• Is the contract treated similarly to another financial instrument?
• Are there open positions at year-end?  Open positions generally represent unrealized gains or losses that are not taxable without a realization event.

Taxpayers and practitioners have debated whether gains and losses should be treated as capital transactions, derivatives, or wagering transactions, with the answer often depending on the nature of the contract, applicable tax law, and future regulatory guidance.

Recordkeeping Considerations

Participants should maintain thorough records of their prediction market activity, including:

• Account statements and trade confirmations
• Deposits and withdrawals
• Settlement reports
• Fees and commissions
• Any annual tax documents provided by the platform.

Maintaining accurate documentation is important because it supports cost basis calculations, gain or loss computations, positions reported on tax returns, and responses to any potential IRS inquiries.

Common Reporting Challenges

• 1. 1. Platform Reporting: Platforms may not provide standard tax reporting forms such as W-2G or Form 1099. Even in the absence of these forms, prediction market activity is likely reportable on income tax returns.
     2. Multiple Transactions: Active traders may generate hundreds or even thousands of transactions during a tax year, creating complex reporting requirements that can be easy to underestimate.
     3. Areas of Uncertainty: The taxation of prediction market activity remains an evolving area. No comprehensive guidance currently exists for these types of transactions, which means taxpayers and tax professionals may need to apply existing tax principles by analogy and exercise professional judgment when determining the appropriate reporting methodology. Maintaining thorough documentation of the reasoning behind reporting positions is strongly advisable, should questions arise in the future. Participants should also be aware that future regulatory or legislative developments could affect how these transactions are treated.

Practical Next Steps for Taxpayers

Taxpayers who participate in prediction markets should periodically review their activity throughout the year and prepare a summary that includes total purchases, total sales, net gains or losses, and any open positions remaining at year-end.

Individuals with significant trading volume, substantial gains or losses, or questions regarding proper tax treatment of prediction market activity may benefit from consulting a BMF tax advisor. Our team can help ensure compliance, reduce the risk of reporting errors, and provide guidance as this area of tax law continues to develop.