US-Iran ceasefire continues through 2026?

Platform comparison

Market context

The question centres on whether direct US military strikes against Iranian territory will occur between now and end-September 2026. The definition excludes strikes on Iranian proxies, defensive actions, or operations in international waters, focusing instead on air strikes or surface-to-surface missiles that impact Iran proper. The 96% implied probability reflects a market consensus that such escalation remains unlikely over the next 21 months, despite regional tensions.

Historical precedent suggests sustained periods without direct US-Iran military engagement are common despite rhetorical escalation. The 2020 Soleimani assassination and subsequent Iranian ballistic missile response in January 2020 represented the last direct bilateral military exchange; the subsequent three-plus years saw no reciprocal strikes despite multiple proxy conflicts in Iraq, Syria, and Yemen. The 2015 nuclear deal framework, though strained, created diplomatic off-ramps that reduced incentives for tit-for-tat escalation. Current market pricing aligns with this pattern of brinkmanship without crossing into direct strikes.

Key variables for traders include developments around Iran's nuclear programme—particularly International Atomic Energy Agency inspections and enrichment levels—and any major regional incidents involving US-allied states. The US presidential transition in January 2025 introduces policy uncertainty; incoming administrations have historically adjusted Iran engagement postures. Israeli operations against Iranian targets, which intensified in 2024, could create pressure for US involvement but have not yet triggered direct American strikes. Announcements regarding sanctions enforcement, naval incidents in the Strait of Hormuz, or proxy attacks on US personnel would signal rising escalation risk and warrant position reassessment.

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.

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 Best Prediction Markets UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

What are the best prediction markets for UK traders in 2026?

For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.