Iran charges Hormuz fees by 2026?

Platform comparison

Market context

Iran is considering whether to officially announce and begin collecting mandatory fees from commercial vessels passing through the Strait of Hormuz, a move that would fundamentally alter passage rights in one of the world’s most critical oil chokepoints. On Polymarket today, this contract trades at just 2% for “Yes”, reflecting deep scepticism among traders that Tehran will formalise such a policy before the settlement window closes in August 2026. The on-chain mechanics are straightforward: USDC on Polygon backs conditional tokens, and resolution hinges solely on an official Iranian government announcement, not isolated demands or informal pressure.

Historically, similar attempts to monetise strait access have faltered due to international opposition and legal ambiguities. The closest comparable case is the 2024–2025 Iran–Oman proposal to charge “voluntary” service fees, which collapsed when the US objected and Oman insisted fees must remain non-mandatory, while Iran demanded they be obligatory [1][2]. Unlike the Malacca and Singapore straits, where voluntary contributions are standard, Hormuz has no precedent for enforced charges, making the 2% probability a rational assessment of geopolitical risk rather than mere speculation.

Traders should monitor three key catalysts: an official Iranian foreign ministry statement, a formal joint announcement with Oman, and any IRGC enforcement of vetting fees on foreign-flagged vessels [4]. Recent reporting confirms Iran’s deputy foreign minister stated Tehran would impose its own fees if no agreement is reached with Oman, a clear escalation signal [1]. With the US and allies firmly opposing mandatory tolls, the path to a qualifying announcement remains narrow, and the current 2% price accurately reflects the high barrier to a “Yes” resolution.

Sources: 1 · 2 · 3 · 4 · 5

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.

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 Kalshi UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.