US-Iran Final Nuclear Deal by…?
Short Answer
The model sees potential mispricing: a final US-Iran nuclear deal by December 31 at 23.3% model probability versus 38.0% market probability. This divergence appears driven by official Iranian denials of direct nuclear talks, with current diplomatic efforts focused on an initial agreement regarding the Strait of Hormuz instead of a comprehensive nuclear deal.
1. Executive Verdict
- A deal by December 31 appears unlikely; Iran denies direct nuclear negotiations.
- August outcomes face extremely limited time, with focus on Hormuz, not nuclear talks.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| August 31 | 4.5% | 2.2% | The 60-day negotiation period is nearing expiration without substantive nuclear talks. |
| December 31 | 38.0% | 23.3% | Official Iranian statements deny direct nuclear talks, focusing instead on a Strait of Hormuz agreement. |
| September 30 | 14.0% | 8.1% | Official Iranian statements deny direct nuclear talks, focusing instead on a Strait of Hormuz agreement. |
Current Context
As of August 4, 2026, no final nuclear deal exists between the United States and Iran [^] . Diplomatic efforts currently prioritize a short-term, two-phase approach, beginning with reopening the Strait of Hormuz, followed by potential nuclear discussions [^]. Diplomacy is conducted indirectly through regional mediators, specifically Qatar, Oman, and Pakistan [^]. Both Washington and Tehran publicly deny direct negotiations or issue conflicting statements, likely to manage domestic political needs [^].
High tensions complicate Hormuz talks, despite US optimism [^] . Tensions remain high following the outbreak of war between the US/Israel and Iran on February 28, 2026 [^]. A recent attack on a cargo vessel in the Strait of Hormuz further complicates sensitive maritime negotiations [^]. US officials, including President Trump, Secretary of State Rubio, and Treasury Secretary Bessent, have expressed optimism for a deal concerning the Strait of Hormuz as early as August 4 or 5, 2026 [^]. However, Iranian officials maintain these discussions are limited to technical maritime arrangements with Oman [^]. An American official stated talks for a permanent peace deal continue after two days of clashes [^].
2. Market Behavior & Price Dynamics
Historical Price (Probability)
Outcome probability
Date
The contract tracking the probability of a final US-Iran nuclear deal has seen its indicated price decline from an open of 7.5% on July 21 to a current level of 4.0%. The price has moved within a range of 2.6% to 7.5% in what is broadly a sideways, low-conviction pattern. The drop to 4.0% by August 4 coincides with reports from that day clarifying the state of negotiations. According to Al-Monitor, diplomatic efforts are indirect, conducted through regional mediators, and are focused on a preliminary two-phase plan beginning with the Strait of Hormuz, not a final nuclear agreement. This shift in diplomatic priority away from a comprehensive deal is the primary driver behind the contract's price decay.
Critically, the market shows zero traded volume across its history. All price movement reflects adjustments to quotes, not transactions between participants. This complete absence of trading activity indicates there is no market conviction at current price levels. The observed price range does not establish meaningful support or resistance, as these levels have not been tested by any capital.
The chart suggests a market sentiment of low probability for a deal, which aligns with public reporting on the state of diplomacy. However, the lack of any trading volume means this sentiment is theoretical and untested. The price reflects an offering price, not a market-clearing price established by buying and selling pressure.
3. Significant Price Movements
Notable price changes detected in the chart, along with research into what caused each movement.
📈 August 02, 2026: 8.5pp spike
Price increased from 26.0% to 34.5%
Outcome: December 31
What happened: The 8.5 percentage point spike on August 2, 2026, for a US-Iran nuclear deal likely refers to historical fluctuations from other periods, as the provided sources explicitly state it is "rather than a specific catalyst related to an August 2, 2026, peace deal announcement" [^][^][^]. Consequently, there is no direct evidence to identify a primary driver for that specific movement. However, traditional news reports appearing shortly after this date indicated some diplomatic activity, with President Trump claiming "talks are under way" and an American official stating that "talks between the US and Iran over a permanent peace deal continue" on August 4, 2026 [^][^]. Social media activity from key figures or viral narratives were not identified as drivers for any movement around August 2, 2026, making it irrelevant based on the available information.
4. Market Data
Contract Snapshot
Here is a summary of the contract rules:
1. YES Resolution Trigger: A "Yes" resolution occurs if a qualifying written diplomatic instrument between the United States and Iran is mutually signed or formally adopted by the specified market date, 11:59 PM ET. This instrument must be identified as the "final deal" from the June 14, 2026 memorandum and include concrete, measurable obligations limiting Iran's nuclear program that are not subject to future negotiations. 2. NO Resolution Trigger: The market resolves to "No" if such a qualifying written diplomatic instrument has not been mutually signed or formally adopted by both the United States and Iran by the specified date and time. 3. Key Dates/Deadlines: The primary deadline for resolution is 11:59 PM ET on the specified market date. If a qualifying instrument is signed or adopted by this time but its complete text is unreleased and ambiguous, the market may remain open for up to 28 calendar days. 4. Special Settlement Conditions: The agreement must be either mutually signed (including official electronic signatures) or formally adopted by both countries if signatures are not required. The resolution is final once these conditions are met, regardless of whether the instrument later enters into force, is ratified, or is repudiated. Resolution sources are primarily official communications from the US and Iranian governments, supplemented by a consensus of credible news reporting.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Last trade probability |
|---|---|---|---|
| August 31 | $0.04 | $0.96 | 5% |
| December 31 | $0.38 | $0.64 | 38% |
| September 30 | $0.15 | $0.86 | 14% |
Market Discussion
Traders on this Kalshi market are closely tracking the ongoing US-Iran negotiations for a final nuclear deal, considering factors such as Iran's commitment to non-proliferation, IAEA verification needs, and the progression of bilateral or multilateral talks. While a deal is seen as highly improbable in the immediate term, with only a 2-4% chance by late August/early September, market prices indicate a significant rise in probability to 37% by December 31st. This suggests a consensus that an agreement is unlikely in the short-term but becomes considerably more plausible as the year progresses, pending extensions to talks or new proposals.
5. Trader Dashboard
A deterministic, per-market integrity scorecard computed from order-book and price data. Higher is better for Trader Trust, Liquidity, Move Quality and Resolution; higher means more risk for Quote Risk and Avoid Risk.
August 31PrimaryTrader Trust—Liquidity—Move Quality—Resolution—Quote Risk—Avoid Risk—
Move Quality—No significant move
- Factor
June 30Trader Trust—Liquidity—Move Quality—Resolution—Quote Risk—Avoid Risk—
Move Quality—Insufficient Data
- Factor
July 31Trader Trust—Liquidity—Move Quality—Resolution—Quote Risk—Avoid Risk—
Move Quality—Insufficient Data
- Factor
August 13Trader Trust—Liquidity—Move Quality—Resolution—Quote Risk—Avoid Risk—
Move Quality—No significant move
- Factor
August 18Trader Trust—Liquidity—Move Quality—Resolution—Quote Risk—Avoid Risk—
Move Quality—No significant move
- Factor
September 30Trader Trust—Liquidity—Move Quality—Resolution—Quote Risk—Avoid Risk—
Move Quality—No significant move
- Factor
December 31Trader Trust—Liquidity—Move Quality—Resolution—Quote Risk—Avoid Risk—
Move Quality—No significant move
- Factor
trader_dashboard_lean_v1.13 · computed Aug 4, 2026
6. What are the key diplomatic milestones in the Strait of Hormuz talks, and how might their outcomes influence a final US-Iran nuclear deal by year-end 2026?
| Interim MOU Signed | June 17, 2026 [^][^][^] |
|---|---|
| Initial Negotiation Period | 60 days [^][^][^] |
| Final Deal by Year-End 2026 Probability | ~35-36% (Polymarket, early August 2026) [^][^][^] |
US and Iran signed an interim agreement for negotiations. On June 17, 2026, the United States and Iran signed an interim memorandum of understanding, marking a key diplomatic milestone in the Strait of Hormuz discussions [^][^][^]. This agreement initiated a 60-day negotiation period aimed at finalizing a nuclear deal and reopening the Strait of Hormuz [^][^][^]. As of early August 2026, the Strait remains a flashpoint, with ongoing indirect negotiations between the US and Iran to establish an acceptable shipping route [^][^][^][^][^]. These discussions are mediated by Oman and Qatar [^][^][^][^][^]. Despite US President Donald Trump's claims of imminent breakthroughs, Tehran has officially denied these assertions [^][^][^][^][^].
Nuclear deal negotiations face significant unresolved disagreements. The 60-day negotiation period for a final nuclear deal is nearing its end [^][^][^][^]. Significant disagreements persist, particularly concerning the disposition of Iran's highly enriched uranium [^][^][^][^]. These issues lead experts to express skepticism about the feasibility of a comprehensive agreement by year-end 2026 [^][^][^][^]. The unresolved status of the Strait of Hormuz, coupled with continuing nuclear disputes, contributes to low confidence in an imminent final US-Iran nuclear deal.
7. What concrete evidence from Q2-Q3 2026 supports the market consensus that direct, substantive negotiations for a final nuclear deal are not currently underway between the US and Iran?
| Direct US-Iran Nuclear Negotiations | Not currently underway as of August 3, 2026 (Iranian Foreign Ministry spokesperson Esmail Baghaei) [^][^][^][^] |
|---|---|
| Iran's Only Diplomatic Channel | Oman (not the US) [^][^][^][^] |
| Islamabad MoU Nuclear Negotiations Progress | No technical or substantive progress as of early August 2026, despite signing June 17, 2026 [^][^] |
Iranian officials explicitly deny direct nuclear negotiations with the United States. As of Q2-Q3 2026, Iran maintains that it is not engaged in direct, substantive negotiations for a final nuclear deal with the United States. This position was clearly articulated by Iranian Foreign Ministry spokesperson Esmail Baghaei on August 3, 2026, who stated that direct talks with the U.S. are not underway, contradicting claims made by President Donald Trump [^][^][^][^]. Iran has further specified that its sole ongoing diplomatic channel is with Oman, not with the United States [^][^][^][^].
A recent MoU has not led to substantive nuclear discussions. Although an Islamabad Memorandum of Understanding (MoU) was signed on June 17, 2026, establishing a 60-day window for discussions, it initially focused on immediate de-escalation and access to the Strait of Hormuz [^][^]. As of early August 2026, the technical and substantive discussions necessary to address complex nuclear program issues have not materialized or progressed, indicating a lack of advancement on a comprehensive framework agreement [^][^][^][^].
8. How does the Trump administration's current negotiation strategy for a 2026 nuclear deal contrast with the framework of the original Joint Comprehensive Plan of Action (JCPOA)?
| 2026 MOU Framework | Bilateral, preliminary, grants immediate oil sanctions relief, defers core issues to future negotiations (June 2026 [^][^][^][^]) |
|---|---|
| Negotiation Period | 60 days for a final nuclear deal (June 2026 [^][^][^][^]) |
| Comprehensive Deal Probability | Low probabilities for immediate future, skepticism before 2027 or 2029 (early August 2026 [^][^][^][^]) |
The Trump administration's 2026 memorandum significantly departs from the 2015 JCPOA. The June 2026 memorandum of understanding (MOU) with Iran is a bilateral, preliminary framework that immediately provides Iran with oil sanctions relief [^][^][^]. Crucially, it postpones critical nuclear and missile issues for future negotiations within a 60-day timeframe [^][^][^][^]. In contrast, the 2015 Joint Comprehensive Plan of Action (JCPOA) was a comprehensive, multilateral agreement that imposed specific, binding restrictions on enrichment, stockpiles, and inspection protocols from its inception [^][^].
Critics question the 2026 framework's effectiveness and its future prospects. They argue that the preliminary framework lacks the immediate, detailed nuclear verification and structural limitations integral to the original JCPOA, raising concerns that the U.S. is sacrificing leverage for initial de-escalation without guaranteeing nuclear outcomes [^][^][^][^]. As of early August 2026, prediction markets indicate low probabilities for a comprehensive U.S.-Iran nuclear deal in the immediate future, with traders expressing skepticism about achieving a verifiable, binding agreement before 2027 or 2029 [^][^][^][^]. Furthermore, an Iranian foreign ministry spokesman stated in early August 2026 that Iran is not currently engaged in negotiations with the U.S., despite the June 2026 MOU aiming to establish a 60-day negotiation period to end hostilities and reach a final nuclear deal [^][^][^][^][^].
9. What are the scheduled dates and expected topics for upcoming IAEA reports and UN Security Council meetings concerning Iran's nuclear program for the remainder of 2026?
| IAEA Board of Governors Meetings (2026) | Generally meets twice in September (before and after General Conference) and again in November [^] |
|---|---|
| UN Security Council Resolution 2231 Briefings (2026) | Typically holds periodic briefings, including 90-day reports on 1737 Sanctions Committee and biannual briefings on JCPOA implementation [^] |
| Expected Discussion Topics | Iran's nuclear program, implementation of Resolution 2231 (2015), 1737 Sanctions Committee, and JCPOA implementation [^] |
Key international bodies schedule regular meetings on Iran's nuclear program. For the remainder of 2026, the IAEA Board of Governors is anticipated to convene twice in September, once preceding and once following the General Conference, and again in November [^]. Concurrently, the UN Security Council routinely holds periodic briefings regarding the implementation of Resolution 2231 (2015) concerning Iran. These sessions incorporate a 90-day reporting cycle for the 1737 Sanctions Committee and biannual updates on the implementation of the Joint Comprehensive Plan of Action (JCPOA) [^].
Discussions consistently focus on Iran's nuclear activities and related agreements. The core subjects for deliberation at both IAEA and UN Security Council meetings predominantly involve Iran's nuclear program [^]. This encompasses the oversight of Resolution 2231 (2015) implementation, updates from the 1737 Sanctions Committee, and progress relating to the JCPOA [^]. While these general schedules and overarching topic areas are established, the available information does not specify the precise dates for these meetings or provide detailed agendas beyond these broad categories for the remainder of 2026.
10. What domestic political pressures in Tehran and Washington could compel either side to accept or reject a nuclear agreement before the end of 2026?
| US Congressional Stance | Bipartisan insistence on reviewing any nuclear accord [^] |
|---|---|
| US Critic Concern on Funds | Potential $300 billion in reconstruction funds for Iran [^][^][^][^] |
| Iran Internal Political State | Unprecedented public rift within the hardline establishment [^] |
Washington faces significant domestic political hurdles to a nuclear agreement. The political environment is largely characterized by skepticism and potential rejection of a nuclear agreement, primarily driven by looming elections and bipartisan congressional demands for review [^][^][^][^]. Critics, particularly within the Republican Party, voice concerns that a deal could be too generous, potentially offering Iran substantial financial benefits such as $300 billion in reconstruction funds, without adequate enforcement or sufficient restrictions on its nuclear ambitions [^][^][^][^]. The existing Memorandum of Understanding is seen as politically fragile due to its lack of detail and reliance on uncertain enforcement, making a comprehensive final deal unlikely to survive congressional scrutiny [^][^][^][^].
Tehran is experiencing an unprecedented internal rift over a potential deal. Domestic pressure in Iran stems from a deep and unprecedented internal division within the hardline establishment [^]. Pragmatists within this camp are seeking a deal to alleviate a severe and unsustainable economic crisis, with senior officials warning about the gravity of the situation [^][^][^]. Conversely, ultraconservative hardliners, often supported by IRGC-affiliated media, strongly oppose any compromise with the U.S., viewing it as a betrayal of revolutionary 'red lines' [^][^]. The absence of a clear, unified supreme arbiter in Tehran exacerbates internal political competition, empowering factions against negotiations to dominate the narrative and obstruct potential compromises [^][^].
11. What Could Change the Odds
Key Catalysts
As of August 4, 2026, there is no official agreement or confirmed direct peace talk session between the US and Iran to end the conflict that began in late February 2026; Iranian officials publicly denied US President Donald Trump's claims that negotiations are currently underway [^] [^] [^] [^] . | US-Israel war on Iran News | Al Jazeera" data-source-lanes="traditional">[^][^][^][^]. Current diplomatic efforts, mediated by countries including Qatar, Pakistan, and Oman, are focused on a two-phase resolution: first, reopening the Strait of Hormuz, and second, addressing the broader nuclear program and security issues [^][^][^][^][^]. Prediction markets on Polymarket assign approximately 14% probability to a final US-Iran nuclear deal by the September 30, 2026 deadline [^][^]. Trader sentiment on platforms like Kalshi remains bearish regarding a US-Iran nuclear deal in the near term, with most market probabilities for an accord prior to 2027 remaining below 50% [^].
An American official reports that talks between the US and Iran over a permanent peace deal continue [^] . The ceasefire emerged from a deal where the US responded to Iran's terms [^]. The ongoing US-Iran war presents significant headwinds [^][^], especially with the Houthis having opened a new front [^], which impacts the US strategy around Iran's nuclear enrichment program [^].
Key Dates & Catalysts
- Closes: September 30, 2026
12. Decision-Flipping Events
- Trigger: As of August 4, 2026, there is no official agreement or confirmed direct peace talk session between the US and Iran to end the conflict that began in late February 2026; Iranian officials publicly denied US President Donald Trump's claims that negotiations are currently underway [^] [^] [^] [^] .
- Trigger: Current diplomatic efforts, mediated by countries including Qatar, Pakistan, and Oman, are focused on a two-phase resolution: first, reopening the Strait of Hormuz, and second, addressing the broader nuclear program and security issues [^] [^] [^] [^] [^] .
- Trigger: Prediction markets on Polymarket assign approximately 14% probability to a final US-Iran nuclear deal by the September 30, 2026 deadline [^] [^] .
- Trigger: Trader sentiment on platforms like Kalshi remains bearish regarding a US-Iran nuclear deal in the near term, with most market probabilities for an accord prior to 2027 remaining below 50% [^] .
14. Historical Resolutions
No historical resolution data available for this series.
