Odds current as of August 7, 2026. This is a live market, and the numbers below will move. We refresh this piece on a regular cadence, and sooner if there's a major development, but always check the live Polymarket page linked below for the current price before trading on anything here.
As of this writing, Polymarket's crowd puts the odds of a signed US-Iran nuclear deal at just 1% by August 13, 2% by August 18, and 3% by August 31. Those numbers climb the further out you look: 12% by the end of September, and 32% by the end of the year. Traders, in other words, think a deal by the near-term deadlines is close to dead, but they're not writing off 2026 entirely.
That gap between near-zero and one-in-three tells you something important about how this whole polymarket iran odds picture is being priced right now, and it's worth understanding exactly what the market is asking before any of those numbers mean much to you.
Total volume on this market has crossed $13.5 million. Prices pulled directly from Polymarket's live order book at the time this piece was written, not a snapshot from weeks ago, so treat anything you read elsewhere with an older timestamp as stale.
What the Market Is Actually Asking
This is the part that trips people up on nuclear-deal markets specifically, because "deal" can mean a lot of different things, and Polymarket's resolution criteria are much stricter than a headline might suggest.
The main Iran nuclear deal polymarket contract, officially titled "US-Iran Final Nuclear Deal by...?", doesn't resolve Yes just because officials sound optimistic or a framework gets announced. The rules require:
- A written diplomatic instrument, formally signed or adopted by both the US and Iran
- At least one specific, measurable obligation limiting Iran's nuclear program, such as a defined cap on enrichment purity or a commitment to surrender or dilute existing enriched uranium stockpiles
- Language that goes beyond a vague pledge. A general promise not to pursue nuclear weapons, or an agreement to simply maintain the status quo while talks continue, does not qualify
That last point matters more than it might seem. Over the past two months, US and Iranian officials have made several announcements that sounded like breakthroughs, only for the market to barely move or actually fall, because the substance didn't clear this bar. A joint statement that inspections "will occur" is not the same as a signed document capping enrichment at a specific level, and Polymarket's resolution language is built specifically to filter out that kind of ambiguity.
There's also a US Iran nuclear deal polymarket nuance worth flagging: the market accepts a multilateral deal too, as long as both the US and Iran are parties to it, so a broader regional agreement involving other countries wouldn't be disqualified just for having extra signatories.
How the Odds Have Moved, and Why
The current negotiation window traces back to June 14, 2026, when the US and Iran signed what's known as the Islamabad Memorandum, an interim agreement that ended a period of active military conflict, reopened the Strait of Hormuz, and set a 60-day clock for both sides to negotiate toward a final nuclear agreement. That 60-day window is why August 13 is the market's first real deadline.
Since then, the pattern has been strikingly consistent: a burst of optimistic rhetoric, followed within days by a denial, a stalled technical session, or a resumption of hostilities that erases most of the gain. Laid out chronologically, it looks like this
This kind of whiplash isn't unique to the nuclear deal contract either. It shows up across the whole cluster of Iran markets on Polymarket, including the broader conflict-risk tracking we cover in our own look at where Iran's overall war-risk odds currently sit, which tends to move on the same headlines but doesn't require the same strict, signed-document bar to shift.
This back-and-forth is exactly why the near-term contracts sit so low while December still holds real value. Traders appear to be pricing in that a formal, text-based agreement meeting Polymarket's strict resolution bar is unlikely to materialize on the accelerated timeline both sides keep publicly floating. Months of continued negotiation, and possibly a shift in Iran's own internal politics, could eventually produce something concrete enough to qualify. That domestic angle is worth its own look, and our piece on the leadership crisis odds Polymarket traders have been pricing digs into it specifically.
How to Read This as a Trader
A few things worth keeping in mind if you're actually looking at this market rather than just reading about it.
Watch the Gap Between Rhetoric and Text
Based on the pattern above, public statements from officials on either side have moved prices repeatedly without moving the market toward actual resolution. If you see a headline about "progress" or an "agreed framework," check whether it includes anything resembling a specific, testable benchmark before assuming it changes the real odds much.
The IAEA Is a Better Signal Than Politicians
Announcements from the International Atomic Energy Agency about inspector access have consistently been treated by the market as more credible than statements from US or Iranian officials, largely because inspections are independently verifiable in a way political statements aren't.
Sanctions Waivers Are a Tell
The Treasury's rolling 60-day waivers on Iranian oil sales have tended to coincide with periods of active negotiation rather than final resolution. A new waiver is a signal that talks are ongoing, not that they're concluding, and it's worth noting these waivers move oil-linked contracts almost as much as they move this one. Our breakdown of how the Hormuz crisis has moved oil-linked prediction markets covers that overlap in more depth if crude pricing is part of your read here.
Key Dates to Watch
August 13 marks the end of the original 60-day window from the Islamabad Memorandum, making it the first real test of whether this round of diplomacy produces anything durable. September 30 and December 31 give the market more room for a slower-moving agreement to actually get drafted and signed, which is reflected in their meaningfully higher prices.
None of this is a signal to trade on, and this article isn't investment advice. It's a framework for reading why the price is where it is, so a headline doesn't catch you off guard.
How This Connects to Other Markets
The nuclear deal question doesn't exist in isolation, and by now you've seen how tangled it is with the broader conflict, oil, and domestic politics threads running through this whole cluster. If you're newer to how these Iran-related markets work as a category, including which contracts actually exist right now and how to think about placing a trade responsibly on something this fast-moving, our guide on Iran war markets and what traders need to know is the better starting point before jumping into a single contract. And if you're thinking about any of this in portfolio terms rather than as a single speculative bet, our explainer on using prediction markets as geopolitical hedging walks through how traders have used contracts like these to offset other kinds of exposure.
One more thing worth knowing if you're active in this space at all: prediction markets tied to sensitive geopolitical and military topics have drawn real regulatory scrutiny this year, including the first criminal case built around insider trading on a prediction market, which touched on military-intelligence-adjacent contracts. It's a useful reminder that these markets, however liquid they look, aren't immune to the same enforcement risks as any other regulated exchange.
The Bottom Line
Right now, the market is telling a fairly coherent story: a formal, text-based nuclear agreement in the next few weeks looks unlikely, but the door isn't closed on something materializing before year-end. That's a meaningfully different read than either "a deal is imminent" or "talks have collapsed," and it's the kind of nuance that only shows up when you look past the headline probability and into what the contract is actually asking. If you're weighing a position here, or trying to figure out how this market fits against the dozens of other Iran-related contracts currently live, Polymetric can help you compare pricing and volume across the full cluster rather than reading one number in isolation.
Frequently Asked Questions
What are the current Polymarket odds on an Iran nuclear deal?
As of early August 2026, Polymarket prices a signed deal at roughly 1% by August 13, 3% by August 31, 12% by September 30, and 32% by December 31. These are live prices and shift constantly as negotiations develop, so always check the current market page rather than relying on a fixed number.
What are Polymarket's odds on Iran overall right now?
Beyond the nuclear deal question specifically, Polymarket runs well over a hundred active contracts in its Iran category, covering everything from Strait of Hormuz shipping traffic to domestic political stability to broader conflict-risk questions. The nuclear deal market is just one piece of a much larger, closely watched cluster.
Is there a Polymarket market for a US-Iran nuclear deal specifically?
Yes. The primary US iran nuclear deal polymarket contract is structured as a multi-deadline market, with separate prices for whether a qualifying agreement gets signed by each of several dates through the end of 2026, rather than a single yes-or-no question with one fixed deadline.
Does Polymarket have a market on Iran acquiring nuclear weapons?
Yes, this is a separate contract from the deal-focused markets, generally framed around whether Iran acquires or tests a nuclear weapon before a given date. Traders have priced this as unlikely in the near term, citing extensive damage to Iran's enrichment infrastructure from strikes earlier in 2026 and no verified evidence of a resumed weapons program, based on current IAEA reporting and US intelligence assessments.
