Prediction Market Taxes: What You Need to Know
Key takeaway: Most jurisdictions impose tax obligations on prediction market earnings. The specific classification—whether treated as capital gains, gambling proceeds, or standard income—depends on your location and trading frequency. Comprehensive documentation of all transactions is essential.
The uncomfortable reality many traders face: are prediction market returns subject to taxation? The answer is straightforward: in the vast majority of cases, yes. Below is a detailed examination of how tax authorities across different regions approach prediction market earnings.
United States
Although the IRS has not released targeted rules for prediction markets, established tax law governs these activities:
- Capital gains treatment: Should prediction market shares be classified as property (similar to digital assets), gains qualify for short-term capital gains taxation (taxed at ordinary income rates, reaching 37% maximum) when held for twelve months or less
- Gambling income: When treated as gambling, all returns become taxable ordinary income reported on Schedule 1, Line 8b. Offsetting losses against winnings is permitted (Schedule A), though losses cannot reduce other taxable income
- Kalshi (regulated): Generates 1099 documents for American participants. Polymarket does not issue such forms — yet reporting remains a legal obligation
United Kingdom
The HMRC framework typically categorises prediction market earnings as betting returns, which remain untaxed for non-professional participants. That said:
- Should trading constitute your primary occupation, HMRC may reclassify it as trading income (subject to standard income tax rates)
- Stablecoin conversions (such as USDC transactions) may generate separate taxable gains
- Those engaged professionally should obtain formal HMRC advice
European Union
Member states apply divergent approaches to prediction market taxation:
- Germany: Returns taxed under private asset disposal rules or speculative income provisions (consult our German tax guide)
- France: Stablecoin-settled gains subject to a uniform 30% levy (PFU), encompassing prediction market returns
- Netherlands: Applies portfolio wealth taxation (Box 3) based on holdings rather than realised profits
Australia
The ATO classifies prediction market earnings as taxable income. For those engaged in frequent trading, returns constitute standard taxable income. Occasional participants might attempt to claim hobbyist status, though the ATO has grown stricter regarding blockchain-related ventures.
Record-keeping best practices
Across all jurisdictions, you must preserve documentation covering:
- Individual transactions: execution date, specific market, position type (YES/NO), entry price, volume
- Account movements including deposit and withdrawal records with precise timing and figures
- Stablecoin exchange rates applicable at each transaction moment
- Documentation of platform charges
- Final market outcomes and corresponding settlement values
PolyGram's tax export feature automatically produces IRS 8949-compliant documentation and EU MiCA-formatted data exports derived from your complete trading record. Start trading on PolyGram →