Will the Iranian regime fall by September 30?

Platform comparison

Market context

The underlying real-world event is whether Iran’s current clerical ruling structure, including the Supreme Leader’s office and IRGC command, will be dissolved or lose de facto power over most of the population before September 30, 2026. In prediction markets, a YES share pays out if this overthrow occurs, while a NO share pays out if the regime remains intact; the crowd currently assigns only a 3% chance to the YES outcome.

Historically, regime collapses in the Middle East, such as the 1979 Iranian Revolution or the 2011 fall of Mubarak in Egypt, typically followed prolonged economic distress, leadership assassinations, and coordinated internal uprisings. The current 3% probability suggests the crowd sees Iran’s regime as resilient despite recent shocks, including the February 2026 assassination of Supreme Leader Ali Khamenei and ongoing US–Israeli military strikes aimed at regime change [4]. However, the Institute for the Study of War notes Iran’s highest security body is preparing for potential protest waves amid worsening economic conditions and unemployment [1].

Traders should monitor upcoming diplomatic announcements, such as the indirect talks in Qatar that concluded on 1 July 2026, and any new US or Israeli policy shifts regarding regime-change strategies [5]. Key dependencies include Iran’s internet shutdown duration, which accelerates economic damage and social pressure [1], and whether opposition figures like Mahmoud Ahmadinejad are formally installed as leaders, as previously reported by the New York Times [4]. Any sudden escalation in internal unrest or external military action could materially alter the probability.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Will the Iranian regime fall by September 30? 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 Prediction Market UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 Prediction Market UK. 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 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.

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.