Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Review UK) Pick polygram.ink (preferred broker) |
68% | 32% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
68% | 32% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| October 31 | 68% |
| August 31 | 48% |
| July 31 | 6% |
| July 15 | 2% |
Market context
Iran’s government has recently floated the idea of levying mandatory fees on commercial vessels passing through the Strait of Hormuz, a move that would effectively turn the vital waterway into a toll corridor. This proposal, framed by Iranian officials as “maritime service fees” rather than transit tolls, seeks to bypass international legal objections while generating revenue from global shipping traffic[3]. The current crowd-implied probability of just 2% reflects deep scepticism that such a policy will be officially announced and enforced before the settlement deadline in August 2026.
Historically, similar attempts to charge for passage have failed or been rejected by key stakeholders. In early 2026, Iran proposed formalising tolls split with Oman, but Oman, having ratified the UN Convention on the Law of the Seas, publicly rejected the plan[2]. Furthermore, the US Treasury banned US persons from paying Iranian entities for safe passage in May 2026, citing sanctions risks[1]. These precedents suggest that while Iran may issue isolated demands, a generally applicable, officially announced fee policy remains unlikely, aligning with the low market probability.
Traders should monitor official announcements from Iran’s Supreme National Security Council and any shifts in Oman’s diplomatic stance, as these are critical dependencies for policy enactment. Recent comments by Maersk’s CEO, who warned that allowing such fees sets a “dangerous precedent” for global trade, highlight the intense international opposition that could derail implementation[7]. Additionally, watch for any new ceasefire terms or peace plan updates that might formalise these charges, though current evidence suggests such a scenario is improbable given the geopolitical friction.
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 Review 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.
FAQ
- 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 Review UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
Trade Iran charges Hormuz fees by 2026? on Polymarket Review UK
Live order book, 0% fees, USDC settlement in seconds.
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