Will the Iranian regime fall by September 30?

Platform comparison

Market context

The underlying event is whether the Islamic Republic’s core structures—Supreme Leader’s office, Guardian Council, IRGC under clerical rule—cease governing Iran by September 30, 2026. With crowd-implied probability at just 2% YES, the regime is the overwhelming favourite, while regime collapse is the extreme underdog. Historical parallels show that even battered theocracies, like Iran post-2025–2026 upheaval with 4,000–30,000 deaths and massive arrests[2], often consolidate power after surviving existential tests. The regime’s survival through the February 2026 US–Israeli conflict, including Khamenei’s assassination and Mojtaba’s succession, reinforced IRGC control and suppressed January protests, driving Polymarket’s 90.5% NO probability[1]. This suggests the consensus is firmly on regime endurance, but value may lie contrarianly in the 2% spot if new catalysts emerge.

Traders must watch for announcements on Kurdish anti-regime coalition governance plans[6], IRGC loyalty shifts, Supreme Leader succession stability, and US–Israel regime-change strategies involving leadership assassinations or internal uprising encouragement[4]. A recent report notes Iran exits 2025 battered yet convinced it passed a test, likely taking greater risks in 2026[3]. Key dependencies include domestic protest momentum, regional losses, and whether theocracy’s de facto power erodes over a majority of Iran’s population. If new evidence shows core structures dissolved or replaced, the 2% probability could shift rapidly, offering a rare value spot for contrarian positions.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Will the Iranian regime fall by September 30? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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 Who Will Win 2026. 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.

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 Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.