Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legit) Pick polygram.ink (preferred broker) |
22% | 78% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
22% | 78% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| December 31 | 22% |
| November 30 | 17% |
| October 31 | 11% |
| September 30 | 5% |
| August 31 | 1% |
| June 30 | 0% |
| July 31 | 0% |
| August 13 | 0% |
| August 18 | 0% |
Market context
The event to watch is whether Washington and Tehran put a **qualifying written instrument** in place by 31 August 2026, not whether talks continue or a framework is announced. That distinction matters because the June process began with a memorandum of understanding and follow-on roadmaps, but Reuters reported on 1 July that Doha talks were still focused on implementation issues such as the Strait of Hormuz and frozen funds rather than a lasting deal, while Iranian officials also said the nuclear file was still unresolved.[4][2]
Historically, this market reads more like a document-completion bet than a broad geopolitics call. Earlier rounds in February produced “guiding principles” and “good progress” without a final text, and even in June the public language shifted between “roadmap”, “MOU”, and “technical talks”, which usually signals negotiation over scope, drafting, and verification rather than final adoption.[8][11][12] For accessibility, German GlüStV-style restrictions tend to make many prediction products hard to access from Germany unless the operator is properly licensed; separately, US CFTC reach can matter if the venue is treated as a derivatives-style event contract and touches US persons or US-facing infrastructure. “No-KYC up to $1,500” typically means a user can trade up to that cumulative amount before identity checks are triggered, which widens access at the low end but does not remove geographic or regulatory limits for this market.
Catalysts are likely to be formal: a signed bilateral text, an adopted memorandum without signature if the market rules allow that, or an explicit public statement that the 60-day track has produced a final agreement. Traders should watch for mediator readouts from Qatar or Pakistan, IAEA inspection language, and any announcement on sanctions relief or frozen assets, because Reuters and other outlets have already tied the talks to maritime access, nuclear monitoring, and staged concessions.[1][4][13] Without one of those discrete written outcomes before settlement, the current 0% YES pricing is consistent with a market that is waiting for a document rather than another round of diplomacy.
Methodology
This overview of US-Iran Final Nuclear Deal by…? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Is Kalshi Legit has a different geo footprint.
- How are winnings taxed?
- Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Is Kalshi Legit stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legit would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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