Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Scam?) Pick polygram.ink (preferred broker) |
2% | 98% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
2% | 98% | 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 |
|---|---|
| August 15 | 2% |
| June 26 | 0% |
| June 30 | 0% |
| July 31 | 0% |
| July 7 | 0% |
| July 10 | 0% |
| July 17 | 0% |
| July 24 | 0% |
Market context
Polymarket has this contract at **0% YES**, so the market is effectively pricing in that no authorised Iranian announcement of withdrawal from the June MoU negotiations will land before the 31 July 2026 deadline. On Polymarket, the position is held through **USDC** on **Polygon**, with the outcome determined by whether the relevant public, official statement from Tehran is made inside the settlement window, not by whether talks merely stall or turn hostile.
The historical read is that negotiation breakdowns have often shown up first as complaints about implementation, not as a clean exit. Reuters reported on 28 June that Iran skipped technical talks over recent attacks and unmet MoU conditions, while Iranian officials later said Tehran was not leaving the table and would not be the first side to request talks after US actions disrupted the process[7][6]. Reuters also reported on 8 July that Donald Trump said the interim accord was “over”, and later Xinhua carried Iranian claims that the US had violated commitments, yet those reports still describe a dispute over compliance rather than a formal Iranian termination notice[3][12]. That matters for this market because the contract needs an explicit official withdrawal from the negotiation process, not just hard rhetoric or suspended participation.
The main catalysts are scheduled talks, statements from the Foreign Ministry, the Supreme National Security Council, and any mediated updates from Doha, Switzerland, or Oman. Traders should watch for language around “not participating”, “ceasing obligations”, or “ending negotiations”, because Reuters noted Iran cancelled technical talks as conditions were unfulfilled, which is closer to the trigger language than ordinary protest statements[7]. If the US or mediators announce new sequencing on sanctions relief, assets, or ceasefire implementation, that can either revive talks or prompt Tehran to harden its position before the deadline[9][13].
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
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
- 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 Scam?. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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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