Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Bot UK) Pick polygram.ink (preferred broker) |
67% | 33% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
67% | 33% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| September 30 | 67% |
| August 31 | 37% |
| August 15 | 7% |
| June 26 | 0% |
| July 3 | 0% |
| July 10 | 0% |
| July 31 | 0% |
| July 17 | 0% |
| August 7 | 0% |
Market context
The first round of U.S.-Iran talks in Switzerland ended with mediators saying a roadmap for a broader deal had been set, and that technical work would continue rather than stop at the June meeting.[14][3] That matters for this market because the question is not whether contact continues, but whether the next *formal senior-level* round starts before the deadline; indirect technical sessions in Doha do not, by themselves, satisfy the settlement rule.[1][9]
For context, the current 0% crowd price implies the market is treating a fresh top-level meeting as unlikely, but recent precedents suggest these negotiations have often moved in bursts rather than in a straight line. Reuters reported in May that officials were already discussing a phased framework and a 30-day negotiation period, while later coverage described follow-on talks in Doha focused on narrower implementation issues such as Strait of Hormuz shipping and incentives.[6][9] In earlier rounds, schedule shifts and last-minute attendance changes were common, so a programmatic read would not rely on a single headline; it would track whether both sides, plus mediators, publicly name a date and venue for a new senior-level session.[8][17]
The main catalysts are formal announcements from the U.S., Iran, or the mediators on timing, venue, and delegation rank, plus any confirmation that technical talks have been upgraded into another in-person round.[7][14] Reuters and CNN both reported continuing discussions in June and July, with mediators keeping a communication line open and technical talks planned in Switzerland or Doha, which keeps the door open but does not guarantee a qualifying round will begin.[7][1][9] For a bot or conditional-order workflow, the key fields to watch are a dated meeting notice, named senior participants, and whether the session is explicitly described as direct, in-person diplomacy rather than indirect implementation talks.[3][14]
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 Bot 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
- 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.
- 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%.
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