US-Iran Final Nuclear Deal by…?

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Market context

The June 2026 U.S.-Iran framework is real, but the market is pricing a **fully signed final deal** rather than the initial memorandum: the crowd sits at **1% YES**, while the public reporting shows an interim accord with a 60-day negotiating clock, not a completed nuclear settlement. Reuters said the draft keeps sanctions relief, oil waivers and uranium limits tied to a later agreement, which makes the contract’s bar materially higher than simply having talks under way.[3] AP likewise described the arrangement as the start of negotiations, with key concessions and sanctions changes staged over time rather than locked into a final instrument.[1]

For comparison, the 2015 Iran nuclear deal showed that even when Washington and Tehran reach a framework, the move from announcement to enforceable text can take months and face reversals from domestic politics, inspections disputes and regional security shocks. CSIS noted that the June 19 signing in Geneva was meant to launch technical negotiations on uranium stockpiles and enrichment, underscoring how much remains unresolved before anything resembling a final deal can exist.[2] Against that backdrop, 1% looks low only if one assumes a rapid diplomatic sprint; on a contract requiring mutual signature or formal adoption by 31 August, the base rate remains thin because the substance, sequencing and compliance mechanisms are still being negotiated.[1][2][3]

The main catalysts are the next scheduled negotiation sessions, any announcement that the Geneva process has produced draft text, and whether either side confirms a signed memorandum or final instrument before the deadline. Reuters reported that the U.S. would temporarily waive oil sanctions and hold off on new sanctions until a final agreement is reached, so any shift in sanctions language is a live tell for traders.[3] A further risk is that regional developments can interrupt talks; NBC reporting on 19 June said a planned meeting was postponed after renewed violence in Lebanon, which is the kind of dependency that can delay the timeline even when headline diplomacy remains intact.[7]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track US-Iran Final Nuclear Deal by…? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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?

On Best Prediction Markets, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Best Prediction Markets is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Best Prediction Markets triggers a quick verification flow that finishes in minutes.