Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi UK) Pick polygram.ink (preferred broker) |
25% | 75% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
25% | 75% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| June 30, 2027 | 25% |
| December 31 | 19% |
| November 30 | 14% |
| October 31 | 11% |
| September 30 | 7% |
| August 31 | 3% |
| August 22 | 1% |
| July 31 | 0% |
| August 15 | 0% |
| March 13 | 0% |
| March 31 | 0% |
| April 30 | 0% |
| May 31 | 0% |
| June 30 | 0% |
Market context
Polymarket is currently pricing **YES at 8%** on whether Mojtaba Khamenei ceases to be Iran’s de facto leader before the market’s 2026 year-end deadline, with the contract settled in **USDC** on **Polygon** through conditional tokens. That implies traders see a low-probability but non-negligible chance of a leadership break, removal, detention, or other effective loss of authority within the window.[4][14]
The closest comparables are broader Iran leadership-transition and regime-change forecasts, which generally put the near-term odds well below certainty even when they acknowledge substantial uncertainty. A CFR review on succession says the outcome of any transition remains highly uncertain, while a 2026 forecast report from the American Enterprise Institute’s Council places forced regime change in Iran at **4–9% over one year**, reflecting deep uncertainty around elite cohesion and security-force loyalty.[1][2] That kind of backdrop fits a market that is still mostly trading the base case of continuity, with only a modest tail priced for abrupt change.
For traders, the main catalysts are **formal announcements**, **Assembly of Experts scheduling**, and any sign of a break in the security hierarchy or succession process. Polymarket’s own market page notes that the resolution will follow credible reporting on who exercises effective governing authority, so a verified appointment, resignation, detention, or inability to act would matter more than rumour alone.[14] Recent reporting has also highlighted how quickly odds can move when succession becomes less abstract: Polymarket-linked coverage earlier this year showed traders sharply repricing the chance of Khamenei leaving office by mid-2026 as conflict and transition speculation intensified.[3]
Methodology
We track Iran leadership change by 2026? 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
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
- 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
Trade Iran leadership change by 2026? on Kalshi UK
Live order book, 0% fees, USDC settlement in seconds.
Open live market →