Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
22% | 78% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
22% | 78% | 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 → |
Market context
The key event is whether commercial shipping through the Strait of Hormuz gets back to roughly normal on IMF Portwatch’s 7-day moving average of ship arrivals, which in this market means at least 60 calls on a published date before 30 September 2026. That threshold matters because the market is tied to a specific data series, not to headlines or loose claims that the strait is “open”; the relevant question is whether measured transit counts recover and stay there. [7][8]
The current 22% yes probability looks consistent with a market that is still pricing in incomplete normalisation after the 2026 disruption. Reuters reported in March that Gulf exports had fallen by over 60% as Hormuz stayed mostly closed, while CNN and other coverage described traffic collapsing to a tiny fraction of pre-war levels. Even after the June US-Iran reopening measures, the New York Times said traffic remained “significantly lower” than before the conflict, which suggests a return to a sustained 60-call 7-day average still requires more than a temporary easing. [12][1][7]
For traders, the main catalysts are any further US-Iran security or shipping announcements, mine-clearance or naval escort updates, and whether carriers and insurers treat the corridor as routine again rather than exceptional. The market’s accessibility is also shaped by regulation: the German GlüStV framework can affect whether a user can legally access or participate via a given platform, while the US CFTC still has reach over activity involving US persons or US-linked venues. “No-KYC up to $1,500” means a platform may allow small-value participation without full identity checks, but that does not remove jurisdictional, tax, or access limits for this specific market.
Methodology
This overview of Strait of Hormuz traffic returns to normal by September 30? 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.
- Do I need to KYC for Polymarket Tax 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.
- 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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