Farsi, Hengam, Hormuz or Kharg Island no longer under Iranian control by 2026?

Platform comparison

Market context

Polymarket prices this contract at 2% YES, which is consistent with a very high bar: one of the four islands would have to fall out of Iranian primary governmental or military control, with another state, occupying force or internationally backed authority taking over. On Polymarket, that means traders are buying and selling USDC-settled conditional tokens on Polygon, so the price mainly reflects how likely they think a *durable* change in control is before the 2026-09-30 settlement window closes.

The historical read-through is that these islands have long been tied to Iranian sovereignty and security, not treated as open or lightly governed territory. Farsi Island has an IRGC Navy base and has been used as a forward military outpost, including the 2016 detention of U.S. sailors after they entered Iranian waters; the 1968 agreement recognised Iranian sovereignty over Farsi, while similarly sensitive disputes around islands near the Strait of Hormuz have repeatedly been framed as sovereignty issues rather than transfer risks.[1][2][12][13][15] That matters for pricing: a 2% implied probability is less a call on day-to-day tension than a view that outright loss of control would usually require a major war, occupation, or formal transfer.

For traders, the catalysts are the ones that would change *effective control*, not just the rhetoric. Watch for any military escalation around the Strait of Hormuz, any declared transfer or ceasefire terms, and any credible reporting that Iranian forces have withdrawn or been replaced on one of the four islands; temporary raids, bombardment, or offshore presence do not qualify under the market rules.[11] Kharg is especially worth tracking because of its oil infrastructure role, while Hormuz and Hengam sit close to the strategic shipping lane, so any disruption to basing, access, or administration would matter more than isolated incidents.[15]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Farsi, Hengam, Hormuz or Kharg Island no longer under Iranian control by 2026? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

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.

UK Frequently Asked Questions

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.

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%.