US charges Hormuz fees by 2026?

Platform comparison

Market context

The question centres on whether the United States will formally establish and collect transit fees or tolls from shipping operators, foreign governments, or other entities for passage through the Strait of Hormuz or for naval protection services in the waterway by end of 2026. The strait remains one of the world's most critical chokepoints, with roughly 21% of global petroleum trade passing through it annually. Any US fee scheme would represent a significant departure from the post-war international maritime order, though precedent exists for cost-sharing arrangements in other contexts.

Historical comparison points the probability assessment toward caution. The US has never successfully implemented unilateral transit fees through international straits, despite periodic proposals dating to the Cold War era. The 1982 UN Convention on the Law of the Sea explicitly prohibits transit fees in straits used for international navigation. However, the Trump administration's 2020 proposal to charge Gulf allies for military protection—whilst not formalised as a strait toll—demonstrated political appetite for reframing security costs. The current 13% implied probability across prediction markets reflects scepticism about legislative passage, international acceptance, and enforcement mechanisms within the two-year window.

Traders should monitor statements from the State Department and Department of Defense regarding Hormuz security posture, particularly any formal cost-sharing proposals tabled during budget negotiations. Congressional action on defence appropriations bills will signal whether lawmakers are willing to authorise such a scheme. Recent tensions with Iran and shipping incidents have elevated Hormuz security discussions, but translating rhetoric into actual fee collection remains administratively and diplomatically complex. The settlement definition's inclusion of in-kind payments broadens the resolution criteria, though documentation of such arrangements would still be required.

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

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

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.

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 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.