Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Who Will Win) Pick polygram.ink (preferred broker) |
66% | 34% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
66% | 34% | 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 |
|---|---|
| September 30 | 66% |
| August 31 | 37% |
| August 15 | 6% |
| June 26 | 0% |
| July 3 | 0% |
| July 10 | 0% |
| July 31 | 0% |
| July 17 | 0% |
| August 7 | 0% |
Market context
The first Swiss round was a real diplomatic break-through, but the market is still pricing the next senior-level meeting as a **long shot** at **0% implied probability**. That is the favourite/underdog setup here: the consensus reading is that the process has momentum, yet the market is treating a formally scheduled in-person follow-on before 31 July 2026 as too uncertain to back at anything like a meaningful price.
Historically, this kind of market has been better read through delivery risk than headline sentiment. Reuters reported in April that Iran said **no date had been set** for the next round, which is a useful reminder that early optimism does not always convert into a published schedule.[15] By contrast, the recent pattern has been more constructive: talks in June produced a roadmap and further technical discussions were expected, with AP and Al Jazeera both describing progress and a 60-day framework.[2][3] The value question is whether the crowd is over-discounting a familiar diplomatic sequence — initial political contact, then technical haggling, then another senior-level round once mediators lock the agenda.
The main catalysts are any formal announcement from Qatar or Pakistan, which have already acted as intermediaries, plus confirmation from either government that the next round has a date and place.[2][11] NPR reported on 29 June that the sides would resume peace talks on Tuesday, while also noting Iranian officials were not yet committing to technical talks “this week”, showing how quickly schedules can firm up or slip.[7][11] A trader would watch for a published venue, mediator readouts, and whether follow-on technical talks are described as paving the way for another *senior-level* session; without that, the underdog case stays live despite the positive roadmap language.[2][12]
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 Who Will Win, 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 Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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%.
Trade Next round of US-Iran peace talks by 2026? on Who Will Win
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