The tax implications of prediction market earnings differ substantially across jurisdictions and hinge on variables such as trading volume, whether trading constitutes your primary occupation, and your country's stance on USDC-denominated transactions. This resource outlines the principal requirements — always seek guidance from a qualified tax adviser in your region before making decisions.
United States
- Most prediction market platforms restrict access for US-based participants (Polymarket applies geographic restrictions) — though on-chain participation remains technically feasible
- The IRS classifies crypto holdings as property; every USDC transaction may trigger a taxable event
- Earnings from prediction markets are probably subject to short-term capital gains taxation (taxed as ordinary income if positions remain open under 12 months)
- Kalshi (subject to CFTC oversight) generates 1099 documentation; decentralised platforms do not — participants must report independently
- Active market participants may potentially qualify for trader status (enabling mark-to-market election)
United Kingdom
- Possible gambling exemption: earnings might be non-taxable where the activity qualifies as gambling
- Investment classification results in capital gains tax: a £3,000 exemption threshold applies annually in 2026
- Income classification for professional traders — National Insurance contributions may be due
- HMRC has not issued authoritative rulings on how prediction markets should be categorised
Germany
- §23 EStG: proceeds from private transactions below €600 annually are exempt
- USDC held longer than 12 months: potential exemption under German cryptocurrency tax law
- Regular trading activity typically results in income tax classification
- Glücksspielgewinne (gaming proceeds) ordinarily escape taxation — though the applicable classification remains ambiguous
Australia
- The ATO categorises cryptocurrency as property: capital gains obligations arise upon sale
- Assets retained for 12 months or longer qualify for a 50% CGT reduction
- Gaming proceeds are ordinarily non-taxable unless the participant is classified as a professional gambler
Best Practices Globally
- Export your full transaction record from PolyGram to support tax filings
- Employ specialised crypto accounting tools (Koinly, CoinTracking) to determine taxable gains and losses
- Maintain comprehensive documentation of every USDC movement, encompassing deposits and withdrawals
- Engage a tax specialist with cryptocurrency expertise appropriate to your location
FAQ
- Does PolyGram report my earnings to tax authorities?
- PolyGram presently does not furnish tax documentation to participants. Reporting prediction market gains remains your responsibility under applicable law.
- Is USDC treated differently from volatile crypto for tax?
- Across most jurisdictions, USDC remains a cryptocurrency asset subject to identical tax rules as Bitcoin or Ethereum. Its price stability streamlines gain measurement but does not alter the underlying tax framework.
- What records should I keep?
- Retain all transaction details: timestamps, quantities, entry and exit prices, and settlement outcomes. PolyGram permits export of transaction data — retrieve this periodically.