Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
7% | 93% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
7% | 93% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| December 31 | 7% |
| June 30 | 0% |
Market context
Ukraine's political and security landscape remains volatile following Russia's 2022 invasion, with military command structures under strain, competing power centres within government, and recurring tensions between the presidency and defence establishment. The definition of a coup attempt here requires coordinated action by military, security forces, or state actors to seize control unlawfully—a threshold that excludes routine political friction, dismissed officials, or public disagreements between civilian and military leadership.
Historical precedent suggests Ukrainian coup attempts are rare but not unprecedented. The 2004 Orange Revolution involved mass mobilisation but lacked the military coordination required for this market's definition. More relevant are instances of military factions acting against civilian authority in post-Soviet states: Georgia's 2008 tensions between Tbilisi and South Ossetia, or Moldova's periodic security crises involving breakaway regions. Ukraine's 2014 transition saw military elements align with new civilian authority rather than oppose it. The 6% probability reflects assessments that whilst institutional stress exists, the military's integration into NATO-aligned structures and Ukraine's wartime cohesion against external threat reduce incentives for internal power seizure.
Traders should monitor shifts in military command appointments, public statements from senior defence officials expressing grievance with civilian oversight, and any announcements of security force mobilisations outside normal operational patterns. The Reuters reporting on tensions between President Zelensky and military leadership in late 2024 provides context for baseline friction levels. Settlement depends on "widely reported" claims meeting the coup definition—isolated allegations or government assertions of foiled plots without independent corroboration may not trigger resolution.
Methodology
Sports-specific comparison page for Ukraine coup attempt by 2026?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
UK Frequently Asked Questions
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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