The tax implications of prediction market earnings differ substantially across jurisdictions and hinge on variables such as trading volume, whether it constitutes your primary source of income, and the way your tax authority characterises USDC-denominated transactions. This overview covers the principal regulatory frameworks — you should always seek guidance from a qualified tax adviser in your own jurisdiction.
United States
- Most prediction market platforms restrict access for US-based users (Polymarket implements geographic restrictions) — though direct blockchain interaction remains technically available
- The IRS classifies crypto holdings as property; every USDC transaction may trigger a taxable event
- Earnings from prediction markets are likely subject to short-term capital gains treatment (taxed at ordinary income rates if held under 1 year)
- Kalshi (operating under CFTC oversight) issues 1099 forms; decentralised platforms do not — you must report manually
- Active traders may qualify for trader tax status, enabling mark-to-market accounting elections
United Kingdom
- A gambling exemption may apply: returns could be non-taxable if the activity qualifies as gambling under UK law
- Investment classification triggers capital gains tax: the £3,000 annual exemption applies in 2026
- Income classification for professional trading — National Insurance contributions may be due
- HMRC has not released comprehensive guidance on how prediction markets should be classified
Germany
- §23 EStG provides relief: gains under €600 annually from private transactions are exempt
- USDC held beyond 1 year: potential exemption under German Krypto-Steuerrecht rules
- Regular trading activity typically results in income tax classification
- Glücksspielgewinne (gambling winnings) ordinarily escape taxation — but prediction market status remains ambiguous
Australia
- The ATO regards crypto as a capital asset: capital gains tax applies when you dispose of holdings
- Assets retained for 12 months or longer qualify for a 50% CGT discount
- Gambling winnings are ordinarily not taxable unless you are classified as a professional gambler
Best Practices Globally
- Export your full transaction log from PolyGram for use in tax filings
- Employ crypto tax calculation tools (Koinly, CoinTracking) to determine your gains and losses
- Retain documentation of every USDC transaction, including deposits and withdrawals
- Engage a tax specialist with expertise in cryptocurrency matters within your country
FAQ
- Does PolyGram report my earnings to tax authorities?
- PolyGram does not presently furnish tax documentation to users. The responsibility for declaring prediction market returns rests with you in your respective jurisdiction.
- Is USDC treated differently from volatile crypto for tax?
- Across most jurisdictions, USDC remains a crypto asset governed by identical tax rules as BTC or ETH. Although its price stability makes gain computation more straightforward, the underlying tax classification remains unchanged.
- What records should I keep?
- Maintain copies of all transaction details: timestamp, quantity, entry and exit prices, and settlement outcome. PolyGram allows you to download your transaction history — save this file on a regular basis.