Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
26% | 74% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
26% | 74% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| June 30, 2027 | 26% |
| December 31 | 19% |
| November 30 | 13% |
| 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 pricing this contract at **11% YES**, which means traders on Polygon are assigning a low but non-trivial chance that Mojtaba Khamenei will no longer be the de facto leader of Iran before settlement. On the platform, positions are held as conditional tokens and funded in USDC, so the 11¢ price is the market’s current crowd-implied probability rather than a view on the underlying politics itself.
The historical frame still points to caution. Forecasting work from CFR says leadership transition in Iran remains highly uncertain, while a 2026 regime-change forecast judged forced regime change in Iran to be highly unlikely, with only a 4-9% one-year probability in its own framework.[1][2] That sits alongside Polymarket’s broader Iran leadership markets, where the market has recently priced much higher odds for a named successor than for an abrupt collapse, which suggests traders are still treating continuity as the base case even after the March 2026 succession shock.[4][12]
For traders, the key catalysts are any official statements from the Assembly of Experts, the Guardian Council, the presidency, or the IRGC, plus any visible disruption to Mojtaba Khamenei’s ability to act. Reuters reported in March that Khamenei’s killing triggered a succession race, and subsequent reporting noted how quickly Iranian institutions can move when a transition is forced.[15][13] Because this market resolves on whether he ceases to be the de facto leader, a formal removal, detention, resignation, or an acknowledged handover would matter more than rumours; on-chain, the outcome is binary, and any verified announcement can move the price sharply before year-end.
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 PolyGram, which mirrors the Polymarket order book directly.
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.
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.
- 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.
- 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%.
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