Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Legal UK) Pick polygram.ink (preferred broker) |
97% | 3% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
97% | 3% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| August 31 | 97% |
| August 15 | 96% |
| July 31 | 93% |
| July 19 | 0% |
| July 21 | 0% |
| July 24 | 0% |
Market context
The underlying question concerns whether the United States will formally announce a cessation of offensive military operations against Iran before 31 August 2026. Such an announcement would need to come from an official US government source or authorised representative and explicitly communicate an end to offensive action, whether framed as a ceasefire, truce, or suspension of hostilities. The current 0% crowd probability reflects the absence of any active US military campaign against Iran at present, meaning the market hinges on whether a future conflict would occur and subsequently be halted within the settlement window.
Historical precedent suggests formal cessation announcements are rare in US military doctrine. The 2015 Joint Comprehensive Plan of Action (JCPOA) represented a diplomatic framework rather than a military halt announcement, whilst US operations in Iraq and Syria have continued in modified forms without explicit termination statements. The 2020 killing of Qasem Soleimani and subsequent Iranian missile strikes did not result in either party issuing formal cessation announcements, instead de-escalating through tacit restraint. This pattern indicates that even when hostilities diminish, official announcements of offensive operations ending are uncommon, particularly when regional tensions remain elevated.
Traders monitoring this market should track developments in US–Iran diplomatic channels, statements from the State Department and Department of Defence, and any escalatory incidents in the Gulf region. Recent reporting from Reuters and AP News has documented ongoing tensions around Iranian nuclear activities and regional proxy forces, though no current offensive US military campaign exists. Any material shift would likely precede an announcement—such as breakthrough nuclear negotiations, leadership changes in either nation, or a significant military incident that forces explicit policy statements from Washington.
Methodology
This overview of US announces halt in Iran offensive operations by 2026? 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
- Do I need to KYC for Polymarket Legal UK?
- Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
- 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. Polymarket Legal UK 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.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
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