US-Iran nuclear deal by June 30

30-day trend

Analysis

This market estimates a 26% chance the US and Iran reach a nuclear agreement by June 30, 2026. The low probability reflects the current geopolitical distance between the parties and the tight timeline remaining. A nuclear deal would typically require months of negotiation following a political decision to restart talks, which hasn't materialized. The main factors pushing probability up would be a significant diplomatic shift or international pressure, while factors pushing it down include continued US-Iran tensions and competing domestic political priorities. The critical catalyst is whether either side signals genuine willingness to resume formal negotiations in the coming weeks, as the June deadline leaves little room for extended discussions.

• ›The US currently has no active diplomatic channel for nuclear talks with Iran; restarting formal negotiations would need to occur before May to leave time for agreement by June 30
• ›Iran's nuclear program has advanced significantly since the 2015 JCPOA collapse, making verification and scope negotiation more complex and time-consuming
• ›The agreement involves multiple parties (US, Iran, EU, China, Russia) whose alignment on terms would need to occur simultaneously within an increasingly tight timeframe
• ›US domestic political constraints and Iranian leadership cycles create structural obstacles; the previous JCPOA took months of backchannel work before public negotiations began
• ›Market contracts show wider 2027 deadlines trading higher (51¢) while June-only contracts trade near 26%, indicating traders view the 4-week remaining window as severely constraining

What moved the line

• May 30US-Iran nuclear deal by June 30?↓9pp49→40¢ · Polymarket
• May 31US-Iran nuclear deal by June 30?↓3pp40→37¢ · Polymarket
• Jun 3US-Iran nuclear deal by June 30?↓3pp33→30¢ · Polymarket
• Jun 5US-Iran nuclear deal by June 30?↓3pp32→29¢ · Polymarket

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These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.

How we compute these odds