Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi UK) Pick polygram.ink (preferred broker) |
64% | 36% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
64% | 36% | 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 |
|---|---|
| August 31 | 64% |
| August 15 | 34% |
Market context
Polymarket currently prices this Iran–Oman Hormuz management contract at **36% YES**, with settlement turning on whether an *announced diplomatic agreement* is reached by 31 August 2026. For users holding USDC on Polygon, the main practical issue is not whether headlines sound positive, but whether there is a sufficiently formal instrument — a treaty, deal, or similar official commitment — that explicitly covers traffic management, shipping permissions, or related obligations in the Strait of Hormuz.
The baseline for that price is a market that has already moved from speculation into near-term diplomacy. Reuters reported on 23 June that Oman and Iran agreed to continue talks and formed a joint working group on navigation and maritime services in the strait[3]. Since then, reporting has alternated between optimism and constraint: Reuters said on 29 July that Iran had rejected Oman’s regional-management proposal[14], while later reports from Reuters, the BBC and Bloomberg said a route agreement was in its final stages or agreed in principle[1][9][13]. That kind of sequence matters for prediction-market pricing, because partial progress and public language about “close” or “final stages” do not always translate into a qualifying announcement by the deadline.
A trader watching this contract should focus on whether Tehran and Muscat issue a joint statement, sign a memorandum, or publicly confirm agreed shipping lanes before month-end. The most relevant catalysts are official foreign-ministry releases, any Oman confirmation, and whether the deal is framed as provisional or conditional on third parties, since Reuters and NPR both noted that wider conditions — including US-linked disputes — may still block reopening even if route terms are agreed[13][8]. Recent coverage also suggests the details remain contested, including route administration, fees, and restrictions on vessels[2][4][19]. If those points are left vague, the market may still stay below full certainty even after positive headlines.
Methodology
This page reviews Iran-Oman Hormuz Management Agreement by 2026? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi UK, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
UK Frequently Asked Questions
- 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.
- 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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