Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative UK) Pick polygram.ink (preferred broker) |
92% | 8% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
92% | 8% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 0.5 | 92% |
| SE Palmeiras O/U 0.5 | 88% |
| 2nd Half O/U 0.5 | 80% |
| SE Palmeiras 1st Half O/U 0.5 | 77% |
| O/U 1.5 | 69% |
| 2nd Half O/U 1.5 | 67% |
| 1st Half O/U 0.5 | 62% |
| SE Palmeiras O/U 1.5 | 60% |
| Both Teams to Score in Second Half | 56% |
| Club Cerro Porteño 1st Half O/U 1.5 | 50% |
| 2nd Half O/U 2.5 | 50% |
| SE Palmeiras 2nd Half O/U 0.5 | 50% |
| SE Palmeiras 2nd Half O/U 1.5 | 50% |
| Club Cerro Porteño 2nd Half O/U 0.5 | 50% |
| Club Cerro Porteño 2nd Half O/U 1.5 | 50% |
| SE Palmeiras (-1.5) | 47% |
| Club Cerro Porteño O/U 2.5 | 43% |
| O/U 2.5 | 42% |
| Club Cerro Porteño O/U 0.5 | 35% |
| Both Teams to Score | 32% |
| Club Cerro Porteño O/U 1.5 | 32% |
| SE Palmeiras O/U 2.5 | 30% |
| 1st Half O/U 1.5 | 24% |
| SE Palmeiras (-2.5) | 23% |
| O/U 3.5 | 21% |
| SE Palmeiras 1st Half O/U 1.5 | 18% |
| Club Cerro Porteño 1st Half O/U 0.5 | 15% |
| O/U 4.5 | 9% |
| Both Teams to Score in First Half | 9% |
| 1st Half O/U 2.5 | 7% |
| O/U 5.5 | 3% |
| Club Cerro Porteño (-1.5) | 1% |
| Club Cerro Porteño (-2.5) | 0% |
Market context
Polymarket's conditional token structure currently prices the broader market for additional Copa Libertadores fixtures at 47% YES, reflecting genuine uncertainty about whether supplementary betting opportunities will materialise around the Palmeiras versus Cerro Porteño clash on 12 August. The settlement window closing at 22:00 UTC that evening creates a hard deadline; any additional markets must resolve or be created before that threshold. On-chain liquidity in USDC across Polygon indicates moderate interest, with the probability suggesting traders view secondary market creation as plausible but far from certain.
Historical Copa Libertadores scheduling patterns show that CONMEBOL frequently announces bracket adjustments and additional fixture details in the fortnight preceding knockout stages. The 2024 and 2023 tournaments both saw late-stage market proliferation on prediction platforms once group compositions solidified, typically driving YES probabilities higher as institutional traders hedged exposure across multiple outcome dimensions. Cerro Porteño's participation as a Paraguayan representative carries historical weight—their previous Libertadores runs generated substantial derivative betting activity.
Traders should monitor CONMEBOL's official fixture announcements and Palmeiras' squad availability statements through early August. Any injury disclosures affecting key players, weather alerts for the scheduled 18:00 ET kickoff, or surprise bracket modifications would shift the conditional probability meaningfully. The Polygon network's transaction costs remain negligible, so even modest position adjustments carry minimal friction; watch for volume spikes on the underlying match outcome markets as proxies for whether secondary markets will actually materialise.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Alternative UK, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
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 Polymarket Alternative UK. 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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