Iran charges Hormuz fees by 2026?

Platform comparison

Market context

Iran has already moved from rhetoric to a live, if uneven, charging regime in the Strait of Hormuz: reporting in March and May said some commercial vessels were being asked for payments of up to $2 million per voyage, with some ships paying in yuan, while Iran’s foreign ministry framed the levy as fees for “navigational services” rather than a toll.[1][5][6] That distinction matters for settlement because this market does not require the word “toll”; a public policy of mandatory charges for passage would qualify even if Tehran labels them service fees or maritime charges.[6][7]

For probabilistic reading, the closest comparables are prior “fee” announcements that sat between legal theory and operational collection. Reuters reported in April that Iran was proposing a fee structure tied to vessel type and cargo, then in June reported a 60-day waiver during negotiations, showing that announcements can be real yet still paused, narrowed, or reversed.[11][13] Reuters also noted in July that Oman had floated a regional mechanism with only voluntary fees, while the IMO said there is no legal basis for mandatory tolls in international straits, so traders should separate diplomatic framing from actual enforcement.[15][16]

Programmatically, the key catalysts are official notices from Iran’s foreign ministry, the Strait of Hormuz authority, or the Supreme National Security Council, plus any shipping guidance from insurers, port agents, or naval advisories that confirms collection is underway.[6][11] A robust bot setup would watch for hard evidence of mandatory collection: tariff schedules, permit workflows, payment instructions, or repeated reporting that vessels must pay before transiting, rather than one-off demands or temporary waivers.[1][6][12] News flow that changes the odds fastest is a formal reimposition after the June waiver, a published fee table, or a joint Iran-Oman mechanism that makes payment compulsory for a defined class of commercial vessels.[7][15]

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

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.

UK Frequently Asked Questions

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 Polymarket Bot UK. 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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.