US-Iran Final Nuclear Deal by…?

Platform comparison

Market context

The real-world issue is whether Washington and Tehran can turn the June 2026 framework into a **signed final nuclear deal** by 31 August. The market’s current **0% YES** is far below the level implied by the public diplomacy since mid-June, because officials have described a written MoU, follow-on technical talks, and partial implementation steps, but not a completed final instrument covering the full nuclear file.[1][2][5]

Historically, this kind of contract should be read as a bet on whether an interim understanding survives contact with the hardest clauses. In February and June 2026, both sides repeatedly said there had been “good progress” or agreement on “guiding principles”, yet Reuters and AP still reported no final deal, only tentative extensions, technical sessions, and unresolved points on enrichment, inspections, sanctions relief and frozen assets.[7][11][13] That pattern matters because prediction-market pricing often stays low until there is a formal text and a clear signing path; by contrast, analyst and media coverage has been more constructive than the market, but still stops short of treating a final accord as the base case.[3][10][17]

For traders, the key catalysts are any announcement of a signing date, a named venue, or confirmation that negotiators have settled the remaining technical issues. Reuters reported on 1 July that talks in Doha had moved to maritime traffic and frozen funds, with the nuclear programme itself not discussed in that round, which suggests the schedule and sequencing remain fragile.[5] Watch for mediator read-outs from Oman, Qatar or Pakistan, any U.S. sanctions waivers being extended, and whether both governments confirm a fully adopted written instrument rather than just another framework or working-group statement.[2][5][6]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

UK Frequently Asked Questions

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

What are the best prediction markets for UK traders in 2026?

For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.