Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 0.5 | 100% |
| O/U 1.5 | 100% |
| O/U 2.5 | 100% |
| O/U 3.5 | 100% |
| Both Teams to Score | 100% |
| Both Teams to Score in First Half | 100% |
| 1st Half O/U 0.5 | 100% |
| 1st Half O/U 1.5 | 100% |
| 1st Half O/U 2.5 | 100% |
| IF Gnistan O/U 0.5 | 100% |
| IF Gnistan O/U 1.5 | 100% |
| Tampereen Ilves O/U 0.5 | 100% |
| Tampereen Ilves O/U 1.5 | 100% |
| IF Gnistan 1st Half O/U 0.5 | 100% |
| IF Gnistan 1st Half O/U 1.5 | 100% |
| Tampereen Ilves 1st Half O/U 0.5 | 100% |
| Tampereen Ilves 1st Half O/U 1.5 | 100% |
| IF Gnistan O/U 2.5 | 62% |
| O/U 4.5 | 54% |
| Tampereen Ilves O/U 2.5 | 54% |
| Both Teams to Score in Second Half | 51% |
| 2nd Half O/U 0.5 | 50% |
| 2nd Half O/U 1.5 | 50% |
| 2nd Half O/U 2.5 | 50% |
| IF Gnistan 2nd Half O/U 0.5 | 50% |
| IF Gnistan 2nd Half O/U 1.5 | 50% |
| Tampereen Ilves 2nd Half O/U 0.5 | 50% |
| Tampereen Ilves 2nd Half O/U 1.5 | 50% |
| IF Gnistan (-2.5) | 48% |
| Tampereen Ilves (-2.5) | 37% |
| IF Gnistan (-1.5) | 27% |
| O/U 5.5 | 23% |
| Tampereen Ilves (-1.5) | 7% |
Market context
Gnistan and Tampereen Ilves meet in the Finnish Veikkausliiga on 17 August at 16:00 UTC, with this market capturing whether additional betting markets will be offered on the fixture. The 27% implied probability reflects moderate confidence that supplementary markets—such as player props, corner totals, or half-time outcomes—will materialise alongside the primary match odds. Settlement occurs at 15:00 UTC on the same day, creating a narrow window between market closure and kick-off.
Historical precedent suggests Veikkausliiga fixtures of mid-table significance typically generate 3–5 secondary markets on established sportsbooks, though availability varies by operator and regional licensing. Gnistan's recent form and Ilves' standing within the league hierarchy will influence whether bookmakers perceive sufficient trading volume to justify additional market deployment. Comparable August fixtures in prior seasons show that markets expand when one side carries notable injury news or when fixture congestion creates scheduling intrigue; the current 27% reading implies traders expect baseline coverage only.
Catalysts include official team news releases prior to 17 August—particularly injury confirmations affecting key players—and any late fixture rescheduling announcements from the Veikkausliiga governing body. Funding rates on perpetual derivatives tracking Finnish football sentiment may signal broader market appetite for the fixture. Traders should monitor whether either club's recent performance triggers heightened retail interest, as this directly correlates with bookmaker willingness to populate secondary markets. Exchange spot liquidity for USDC-settled contracts typically tightens as settlement approaches, so position sizing should account for potential slippage in the final hours.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
UK Frequently Asked Questions
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- 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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