Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax 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 | 94% |
| July 19 | 0% |
| July 21 | 0% |
| July 24 | 0% |
Market context
The underlying question concerns whether the United States will formally announce a halt to offensive military operations against Iran before the end of August 2026. Such an announcement would need to come from an official US government source or authorised representative and explicitly communicate cessation, suspension, or ceasefire terms. The 0% crowd probability reflects the absence of any current diplomatic framework or military de-escalation pathway between Washington and Tehran, despite periodic indirect negotiations through intermediaries.
Historical precedent suggests US military postures toward Iran shift through incremental policy adjustments rather than sudden reversals. The 2015 Joint Comprehensive Plan of Action represented the closest approximation to formalised US-Iran military restraint, yet even that agreement did not constitute an explicit halt announcement and ultimately collapsed in 2018. More recently, the January 2020 strikes on Iranian military targets and subsequent Iranian missile responses demonstrated how quickly rhetoric can escalate without formal cessation statements. No comparable announcement of a unilateral US offensive halt against Iran exists in the modern record, making the baseline probability assessment defensible.
Traders should monitor several dependencies: Congressional statements on Iran policy, IAEA nuclear inspections reports, and any unexpected diplomatic initiatives from the incoming or sitting administration. Recent reporting from Reuters and AP News indicates no active ceasefire negotiations, though regional proxy conflicts in Iraq and Syria continue to create unpredictable escalation vectors. The regulatory environment for this market operates under CFTC jurisdiction in the US and German GlüStV frameworks for EU traders; no-KYC access up to $1,500 USD notional exposure applies to this specific market, lowering barriers for retail participation in what remains an extremely low-probability event.
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
- 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. Polymarket Tax UK has a different geo footprint.
- What happens during a tax audit?
- You're responsible for documenting your trades. Polymarket Tax UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- 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).
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Tax UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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