Will the US-Iran deal be physically signed by June 30?

Prediction markets put the probability at 38%: Will the US-Iran deal be physically signed by June 30. Currently, markets are divided (38% YES, 62% NO). Donald Trump says the US agreement with Iran will be signed "shortly", as US officials reveal details of the deal.

What’s Happening

On June 15, 2026, senior administration officials confirmed that President Donald Trump, Vice President JD Vance, and Iranian parliamentary speaker Mohammad-Bagher Ghalibaf signed a memorandum of understanding electronically on Sunday, June 14, accelerating a timeline originally set for an in-person ceremony on Friday. The agreement codifies a 60-day ceasefire extension, reopens the Strait of Hormuz immediately, and commits both sides to negotiating a final nuclear settlement within a maximum 60-day window, extendable by mutual consent. Whether the us-iran deal be physically signed in a follow-on ceremony — distinct from the electronic MOU — remains the unresolved threshold for resolution by June 30. [Axios, Jun 15]

Details disclosed by BBC on June 17 describe a 14-paragraph agreement stipulating Iran will never possess a nuclear weapon and establishing a $300 billion fund for Iranian reconstruction and economic development, with the United States not obligated to contribute. Trump stated the agreement would be signed "shortly," though officials previously told Axios that mediators were weighing whether the us-iran deal be physically signed in person or remotely as early as Wednesday. Hawks in Washington argue the MOU's electronic execution already satisfies binding intent and removes the Hormuz risk premium; analysts caution that the 14-paragraph framework leaves enforcement mechanisms, sanctions architecture, and verification protocols unresolved pending the 60-day negotiating window. [BBC, Jun 17]

The structural factor determining resolution is interpretive: whether market adjudicators classify the June 14 electronic MOU as satisfying the "physically signed" threshold, or require a separate wet-ink ceremony before June 30. CNBC reported on June 13 that Trump initially announced a Sunday signing with the Strait of Hormuz opening immediately after — language consistent with a formal execution event rather than a remote protocol. Mediating countries, identified in diplomatic readouts as facilitating between Washington and Tehran, retain optionality to convene an in-person ratification before the deadline. Should the us-iran deal be physically signed at a subsequent ceremony, resolution tilts YES; absent that, adjudicators must weigh whether electronic execution by three named signatories constitutes a "physical" signing under market rules. [CNBC, Jun 13]

Traded on Polymarket — $68K Volume

Lower-volume market on Polymarket ($68K). Wider spreads expected — enter with limit orders and be aware of slippage risk. Currently 38c YES.