The tax implications of prediction market earnings differ markedly across jurisdictions and hinge on variables such as trading volume, whether this constitutes your primary occupation, and your country's stance on USDC-denominated transactions. This overview covers the principal regulations across major markets — you should always seek advice from a qualified tax adviser in your region before filing.
United States
- Most prediction market platforms restrict access to US residents (Polymarket applies geographic restrictions) — though blockchain-based transactions remain technically available
- The IRS classifies crypto holdings as tangible property; every USDC conversion may trigger a taxable event
- Earnings from prediction markets are generally taxed as short-term capital gains (taxed at ordinary income rates if positions closed within 12 months)
- Kalshi (overseen by the CFTC) generates 1099 tax documentation; decentralised platforms do not — you must declare your own income
- Active traders may qualify for trader status (allowing mark-to-market election)
United Kingdom
- Potential gambling exemption: winnings may escape taxation if the activity qualifies as gambling under UK law
- Investment classification triggers capital gains tax: £3,000 annual exemption applies in 2026
- Income-generating trading activity is treated as professional income — Class 4 National Insurance contributions may be due
- HMRC guidance on prediction market taxation remains unclear and non-binding
Germany
- §23 EStG permits tax-free treatment of private asset disposals earning less than €600 annually
- Holding USDC for longer than 12 months: gains may qualify for exemption under German cryptocurrency tax law
- Repeated trading activity is likely subject to income tax rather than capital gains treatment
- Glücksspielgewinne (gambling prize money) typically receives tax-free status — though the classification of prediction markets remains uncertain
Australia
- The ATO categorises crypto as a capital asset: capital gains tax applies upon sale or exchange
- Assets retained for more than 12 months qualify for a 50% CGT discount
- Gambling prize money ordinarily escapes tax unless the recipient is classified as a professional gambler
Best Practices Globally
- Export your full transaction ledger from PolyGram for use in tax preparation
- Employ crypto accounting platforms (Koinly, CoinTracking) to compute your gains and losses automatically
- Retain comprehensive documentation of every USDC transaction, including deposits and withdrawals
- Engage a tax specialist with cryptocurrency expertise in your country
FAQ
- Does PolyGram report my earnings to tax authorities?
- PolyGram does not presently furnish tax documentation to members. You bear sole responsibility for declaring your prediction market winnings according to your local tax code.
- Is USDC treated differently from volatile crypto for tax?
- Across most jurisdictions, USDC remains classified as a cryptocurrency and faces identical taxation as Bitcoin or Ethereum. The stablecoin's price stability makes gain computation easier but does not alter the underlying tax framework.
- What records should I keep?
- Maintain copies of all transaction receipts showing the date, quantity, entry and exit prices, and settlement outcome. PolyGram allows you to download your transaction history — ensure you save this regularly.