Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Market UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| O/U 0.5 | 100% |
| Gil Vicente FC O/U 0.5 | 100% |
| 2nd Half O/U 0.5 | 100% |
| Gil Vicente FC 2nd Half O/U 0.5 | 100% |
| Gil Vicente FC (-1.5) | 0% |
| Rio Ave FC (-1.5) | 0% |
| Gil Vicente FC (-2.5) | 0% |
| Rio Ave FC (-2.5) | 0% |
| O/U 1.5 | 0% |
| O/U 2.5 | 0% |
| O/U 3.5 | 0% |
| O/U 4.5 | 0% |
| O/U 5.5 | 0% |
| Both Teams to Score | 0% |
| Both Teams to Score in First Half | 0% |
| 1st Half O/U 0.5 | 0% |
| 1st Half O/U 1.5 | 0% |
| 1st Half O/U 2.5 | 0% |
| Gil Vicente FC O/U 1.5 | 0% |
| Gil Vicente FC O/U 2.5 | 0% |
| Rio Ave FC O/U 0.5 | 0% |
| Rio Ave FC O/U 1.5 | 0% |
| Rio Ave FC O/U 2.5 | 0% |
| Gil Vicente FC 1st Half O/U 0.5 | 0% |
| Gil Vicente FC 1st Half O/U 1.5 | 0% |
| Rio Ave FC 1st Half O/U 0.5 | 0% |
| Rio Ave FC 1st Half O/U 1.5 | 0% |
| Both Teams to Score in Second Half | 0% |
| 2nd Half O/U 1.5 | 0% |
| 2nd Half O/U 2.5 | 0% |
| Gil Vicente FC 2nd Half O/U 1.5 | 0% |
| Rio Ave FC 2nd Half O/U 0.5 | 0% |
| Rio Ave FC 2nd Half O/U 1.5 | 0% |
Market context
Gil Vicente meet Rio Ave in the Primeira Liga, and this market covers additional outcomes tied to that fixture rather than the match winner alone. In prediction markets, a **YES** share pays out if the stated event happens before settlement, while a **NO** share pays out if it does not; with the crowd-implied probability at **0% YES**, the market is currently pricing the extra-market condition as not expected to occur. [5][7]
Recent head-to-head data gives a practical way to read that price. Across 22 to 42 past meetings reported by statistical sites, the balance is fairly even but slightly favours Rio Ave, with a large draw rate: one source lists 8 Rio Ave wins, 5 Gil Vicente wins and 9 draws in 22 matches, while another records 16 Rio Ave wins, 12 Gil Vicente wins and 14 draws in 42 matches. The last listed meeting finished 0-0, which is consistent with these teams often producing tight, low-scoring games rather than a clear pattern of one-sided results. [1][2][13]
For traders, the main catalysts are the final team news, confirmed line-ups, and any late schedule or competition changes before the settlement window closes at 2026-08-09T19:30:00Z. The match listing itself confirms the fixture is scheduled for 9 August, and live-match services are tracking it, so any late scratches, suspension news, or pre-kick-off changes to the market description would matter more than long-run form at this point. [4][5][8]
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 Prediction Market UK, which mirrors the Polymarket order book directly.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
UK Frequently Asked Questions
- 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.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- 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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