Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this 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% |
| CD Santa Clara O/U 0.5 | 100% |
| CD Santa Clara O/U 1.5 | 100% |
| CD Nacional O/U 0.5 | 100% |
| CD Nacional O/U 1.5 | 100% |
| CD Santa Clara 1st Half O/U 0.5 | 100% |
| CD Santa Clara 1st Half O/U 1.5 | 100% |
| CD Nacional 1st Half O/U 0.5 | 100% |
| CD Nacional 1st Half O/U 1.5 | 100% |
| O/U 4.5 | 70% |
| 2nd Half O/U 0.5 | 69% |
| CD Santa Clara O/U 2.5 | 55% |
| Both Teams to Score in Second Half | 51% |
| 2nd Half O/U 1.5 | 50% |
| 2nd Half O/U 2.5 | 50% |
| CD Santa Clara 2nd Half O/U 0.5 | 50% |
| CD Santa Clara 2nd Half O/U 1.5 | 50% |
| CD Nacional 2nd Half O/U 0.5 | 50% |
| CD Nacional 2nd Half O/U 1.5 | 50% |
| CD Nacional O/U 2.5 | 35% |
| O/U 5.5 | 32% |
| CD Nacional (-2.5) | 16% |
| CD Santa Clara (-1.5) | 12% |
| CD Santa Clara (-2.5) | 9% |
| CD Nacional (-1.5) | 2% |
Market context
CD Santa Clara and CD Nacional meet in Portugal's Primeira Liga on 10 August at 3:15 PM ET, with Polymarket currently pricing the "More Markets" contract at 12 per cent YES. This settlement window closes just after the final whistle, creating a tight window for conditional token holders to execute any dependent positions. The contract's low probability reflects market scepticism that additional betting markets will materialise for this fixture—a common pattern when liquidity providers weigh the administrative overhead against expected volume for mid-table Portuguese league matches.
Historical precedent suggests Polymarket's conditional token markets for lower-profile European fixtures rarely expand beyond the core match outcome and total goals contracts. When secondary markets do launch for Primeira Liga games, they typically arrive only if early trading volume exceeds €50,000 within the first two hours. Santa Clara's recent form and Nacional's standing in the league hierarchy matter less here than the raw trading activity forecast; markets for player props or quarter-by-quarter scoring rarely justify creation costs for matches lacking established betting syndicates.
Traders monitoring this contract should track Polymarket's own market-creation announcements in the 48 hours preceding kickoff, as the platform occasionally batches conditional tokens for Portuguese fixtures when multiple games share a settlement window. Nacional's injury roster and Santa Clara's squad availability could theoretically drive broader market interest if either side faces unexpected absences, though such developments rarely trigger new conditional markets independently. The settlement mechanism itself—requiring YES resolution only if additional markets exist at 19:15 UTC on 10 August—means the outcome hinges entirely on Polymarket's operational decisions, not match dynamics.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
UK Frequently Asked Questions
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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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