Iran charges Hormuz fees by 2026?

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Market context

Iran and Oman are advancing a joint proposal to collect administrative fees from commercial vessels navigating the Strait of Hormuz, a move that directly challenges the US insistence on toll-free passage under international law[1][3]. While the US and Iran agreed to a 60-day toll-free window following their recent conflict, the administration of the waterway is now being defined by Tehran and Muscat, with Iran insisting payments be mandatory despite Omani claims of voluntariness[1][2]. This diplomatic friction frames the current 2% crowd-implied probability; historically, international waterways like the Strait of Malacca rely on voluntary contributions for safety services, yet Iran’s IRGC has already implemented a vetting system with fees for foreign-flagged ships, suggesting a shift toward obligatory charges[1][6].

Traders should monitor the formal discussions scheduled to begin next week between Iran and Oman regarding fee collection and shipping route modifications[3]. The critical catalyst is whether Tehran will proceed with unilateral fees if an agreement with Oman fails, as Iran’s deputy foreign minister recently stated[4]. Watch for official announcements from the International Maritime Organization, which is expected to consult on the fee structure, and any US diplomatic rebuttals, as Secretary of State Marco Rubio has explicitly opposed monetising the strait regardless of the label used[1]. The settlement of this market hinges on whether a general, announced policy for mandatory fees is officially adopted before August 2026, a threshold that remains distant given the ongoing US objections and the voluntary nature of the current Omani proposal[2][3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

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Resolution & payout

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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.

FAQ

Where can I trade this market with the lowest fees?

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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 PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.