Iran leader end of 2026?

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Market context

Polymarket is pricing the risk that Iran's supreme leader or de facto head of state changes hands by year-end 2026 at roughly 4 per cent, implying a 96 per cent confidence that the current power structure remains intact through the settlement date. This reflects the substantial institutional entrenchment of Iran's theocratic system and the absence of imminent succession signals as of early 2025.

Ayatollah Khamenei has held the supreme leader position since 1989 and is now 85 years old. Historical precedent offers limited guidance: the previous supreme leader, Ayatollah Khomeini, died in office at 86 after a prolonged illness that destabilised markets briefly in 1989. However, Iran's institutional design—with the Assembly of Experts constitutionally empowered to select a successor—creates a mechanism that typically prevents power vacuums. Forced regime change through external intervention remains theoretically possible but has not materialised despite decades of geopolitical tension, and markets assign it minimal probability over a 24-month window.

Traders monitoring this contract should track health-related reporting from Iranian state media and international intelligence assessments, though such signals are historically opaque and subject to rumour. Escalation in US–Iran military confrontation or sanctions regimes could theoretically accelerate internal power struggles, but no scheduled trigger points exist before December 2026. The market's 4 per cent probability essentially prices in tail-risk scenarios: sudden incapacitation, unexpected succession crisis, or unforeseen geopolitical rupture. Absent dramatic developments, the probability is unlikely to shift materially.

Methodology

This page reviews Iran leader end of 2026? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket UK — the application we operate, where you trade directly against 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.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket UK, which mirrors the Polymarket order book at 0% 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.

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.

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.