Israel x Iran ceasefire continues through 2026?

Platform comparison

Market context

Israel and Iran have maintained a de facto ceasefire since April 2024, following Iran's direct missile and drone strikes on Israeli territory and subsequent Israeli airstrikes on Iranian military installations. The market tests whether this fragile equilibrium—characterised by mutual restraint rather than formal agreement—holds through August 2026. The resolution hinges on a narrow definition: any air strike or surface-to-surface missile strike by either party that directly impacts the other triggers a "No" outcome. Cyber operations, naval incidents, or proxy actions through third parties fall outside the settlement criteria, creating a specific rather than comprehensive measure of escalation.

The 97% implied probability reflects historical precedent more than current stability. Previous cycles of Israel-Iran confrontation (2020 Soleimani assassination, 2021 nuclear scientist killings, 2022 consulate bombing in Damascus) followed a pattern of strike-and-restraint, with both parties absorbing blows without immediate full-scale response. However, the timeframe extends 28 months into an uncertain regional environment where US policy transitions, Gaza ceasefire durability, and Hezbollah's status in Lebanon remain unresolved variables. Traders monitoring this market should track statements from Israeli defence officials regarding Iranian nuclear progress, any Iranian Revolutionary Guard Corps announcements about retaliation timelines, and US intelligence assessments on Iranian ballistic missile readiness. Recent reporting from Reuters and AFP on Iranian military posturing will signal shifting risk calculus. For programmatic approaches, conditional orders tied to specific trigger events—such as IAEA reports on uranium enrichment or Israeli military mobilisation announcements—offer more precision than simple price monitoring.

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

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.

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.