Iran charges Hormuz fees by 2026?

Platform comparison

Market context

Iran is actively pushing to impose mandatory fees on commercial vessels navigating the Strait of Hormuz, a move that would fundamentally alter pre-war shipping norms in this critical waterway. On Polymarket, this specific contract currently trades at a mere 2% probability for a "Yes" outcome, reflecting the market's deep scepticism that the United States will acquiesce to such a monetisation of an international strait. As a trader navigating the on-chain mechanics, you are betting on conditional tokens settled in USDC on the Polygon network, where the low price suggests most participants believe the geopolitical friction will prevent any official announcement before the settlement window closes in August 2026.

Historically, the precedent for charging fees in international waterways is weak, as the US government has consistently maintained that no country is permitted to levy tolls on international waterways under existing international law. The current situation differs from the Strait of Malacca, where voluntary contributions are collected for safety services, because Iran insists its fees must be mandatory rather than optional. Recent reports from NBC News and the New York Times confirm that Iran and Oman have presented a joint proposal to the US for administrative fee collection, yet US Secretary of State Marco Rubio has explicitly stated the US will oppose any scenario involving monetising the strait, regardless of whether it is labelled a fee, toll, or donation.

Traders should closely monitor the upcoming discussions between Iran and Oman scheduled to begin next week, as well as any formal ratification of the memorandum of understanding signed with the US. A key catalyst will be whether Iran proceeds to impose unilateral fees if an agreement with Oman fails, as Iran’s deputy foreign minister recently indicated Tehran would act independently without a deal. The market will likely react sharply to any official announcement from the Iranian government or the International Maritime Organization confirming the start of mandatory collection, though current US opposition remains the primary barrier preventing the 2% probability from rising significantly.

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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 Scam?, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

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.

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 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.

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.