Iran charges Hormuz fees by 2026?

Platform comparison

Market context

The underlying event is whether Iran, potentially alongside Oman, will officially announce and begin collecting mandatory fees from commercial vessels navigating the Strait of Hormuz. This would mark a significant shift from pre-war norms, where the waterway remained toll-free under international law, and directly tests the current 2% crowd-implied probability of a “Yes” outcome.

Historically, similar proposals have emerged in volatile post-conflict settings, such as the Strait of Malacca, where voluntary service fees were collected for navigation safety. However, unlike those cases, Iran has insisted its fees would be obligatory, while the U.S. and Oman’s foreign minister have publicly opposed mandatory tolls on international waterways. This contradiction—between Iran’s stance and the diplomatic resistance—frames why the market remains so low, as implementation hinges on a fragile consensus that has yet to materialise.

Traders should monitor the upcoming joint discussions between Iran and Oman, scheduled to begin next week, and any formal announcements from Iran’s Strait of Hormuz authority regarding fee collection. A recent NBC News report confirmed that Iran and Oman have presented the U.S. with a proposal for joint fee administration, though the U.S. has rejected monetising the strait [1]. The key catalyst will be whether Iran moves from proposing to officially enforcing mandatory charges before the settlement window closes in August 2026.

Sources: 1 · 2 · 3 · 4 · 5

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 Kalshi Fees, which mirrors the Polymarket order book directly.

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.

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 Fees. 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 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.