US-Iran Final Nuclear Deal by…?

Platform comparison

Market context

The underlying real-world event is a June 14, 2026, written diplomatic agreement between the United States and Iran, establishing a 60-day extendable window to negotiate a final deal on Iran’s nuclear programme and related issues. This market resolves to “Yes” only if a qualifying written instrument is mutually signed or formally adopted by 11:59 PM ET before the settlement window closes on 31 August 2026. The crowd-implied probability sits at 0% YES, reflecting a consensus that no such instrument will be completed within the timeframe.

Historically, comparable cases like the 2015 Joint Comprehensive Plan of Action (JCPOA) required over a year of intensive negotiation before a final signed text emerged, whereas the 2007–2008 attempts to secure a nuclear freeze collapsed within months due to unresolved uranium enrichment demands. The current 60-day window mirrors the compressed timelines of failed 2006 talks, where the US insisted on a 20-year enrichment halt while Iran proposed only 10 years, leaving a 15-year compromise as the only plausible but unconfirmed path[4]. Given that technical discussions are still ongoing and Iranian officials have not publicly confirmed the invitation for IAEA inspectors, the 0% probability appears value-aligned with the underdog, though contrarian value might sit if the US waives sanctions further or if Lebanon hostilities cease completely, accelerating adoption[2][3].

Traders should watch for three catalysts: the next scheduled technical talks in Switzerland this week, any formal announcement from the High-Level Committee on mediation progress, and whether Iran publicly confirms the IAEA inspector invitation[2][3]. Recent reporting from Al Jazeera notes that mediators Qatar and Pakistan described the Lake Lucerne Summit as constructive, with a roadmap agreed for a final deal within 60 days, yet no signed instrument has materialised[3]. Vice President JD Vance stated the talks laid a “good foundation” but acknowledged more work remains, suggesting the consensus of 0% is justified unless a sudden breakthrough occurs[5]. The value spot likely lies in waiting for a formal adoption announcement, as the current probability reflects the absence of any signed text despite the roadmap agreement.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track US-Iran Final Nuclear Deal by…? 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.

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.

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.

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.