Will the Iranian regime fall by September 30?

Platform comparison

Market context

The real-world event at the core of this market is whether the Islamic Republic of Iran’s current ruling structure—specifically the offices of the Supreme Leader, the Guardian Council, and IRGC control under clerical authority—ceases to govern de facto over most of the population by September 30, 2026. Historically, regime collapse in Iran has been rare and typically required unified national opposition with external backing, as seen in the 1979 revolution that toppled the Pahlavi dynasty through mass uprising, strikes, and military defections[1][4]. Yet analysts note that targeted killings of senior leadership, including the death of Ali Khamenei, have not triggered collapse; US intelligence confirms the regime remains intact despite losing high-ranking officials[2]. The most probable outcome if the government falls is not liberal democracy but a military dictatorship led by the IRGC, which holds command over military and economic assets and could install a figurehead religious leader to legitimise its rule[3].

For a power-user evaluating this market programmatically, the key is to monitor conditional triggers tied to visible fractures in the Basij, the Iranian Army, and the IRGC—without which regime change is unlikely[3]. Traders should watch scheduled announcements from Tehran’s security councils, IRGC economic disclosures, and any shifts in Basij loyalty, as these are dependencies that could shift the 3% crowd-implied probability. Recent reporting confirms that despite ongoing protests and economic collapse, the state apparatus remains functional, and the regime is expected to survive with a more aggressive, anti-American leadership[2]. A conditional order strategy would involve setting alerts on IRGC asset transfers, Guardian Council veto patterns, and Supreme Leader succession debates, as these are the earliest indicators of systemic failure. Without such fractures, the market will resolve to “No” with high confidence.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi Fees, which mirrors the Polymarket order book directly.

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?

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.

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.