US-Iran ceasefire continues through 2026?

Platform comparison

Market context

The underlying question concerns whether direct US military strikes against Iranian territory—defined narrowly as air strikes or surface-to-surface missile strikes causing physical impact—occur before the end of September 2026. The 96% crowd probability reflects a market pricing in relative stability, though the definition's precision matters: strikes on Iranian proxies, naval interdictions, or cyber operations fall outside settlement criteria.

Historical precedent suggests such restraint is plausible but not assured. The January 2020 US strike on Qasem Soleimani demonstrated willingness to conduct direct action; conversely, the April 2024 Iranian ballistic missile barrage drew no immediate kinetic US response beyond air defence. The Trump administration's 2018 withdrawal from the JCPOA created sustained tension without sustained strikes. A trader automating conditional orders should note that the 30-month window encompasses two US presidential transitions (November 2024 already occurred; November 2026 approaches), introducing policy discontinuity risk that the current odds may underweight.

Catalysts to monitor include Iranian nuclear programme developments—the International Atomic Energy Agency reports on enrichment levels quarterly—and regional escalation chains involving Israeli operations, which could trigger Iranian retaliation and subsequent US involvement. Recent reporting from Reuters and AP on uranium enrichment levels and IAEA inspections access provides real-time signal. Programmatically, traders should track statements from US Central Command, Iranian Revolutionary Guard Corps announcements, and oil-price volatility as proxies for perceived conflict risk. The market's tight odds suggest most probability mass concentrates on continuation; edge accrues to those identifying low-probability flashpoints with asymmetric payoff structures.

Methodology

We track US-Iran ceasefire continues through 2026? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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.

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 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.