Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
82% | 18% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
82% | 18% | 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
Ships are currently unable to transit the Strait of Hormuz at normal volumes, with the chokepoint effectively closed for 100 days following a series of US-Iran strikes and Iranian drone attacks on commercial vessels[2][4]. The 83% crowd-implied probability that traffic will return to a 7-day moving average of 60 arrivals by December 31, 2026, reflects a market expectation that the recent ceasefire accord permitting unhindered movement will stabilise operations, despite 150+ vessels remaining stranded and throughput sitting under 2% of normal levels[2][3].
Historical precedents for this probability include the brief reopening on 21 April 2026, which collapsed within 24 hours due to renewed Iranian insistence on permits, and the 22 vessels that passed on 22 June despite heightened risks, suggesting fragile but emerging recovery[3][4][6]. Traders must monitor the International Maritime Organisation’s evacuation plan for 600 stranded ships, which remains on hold, alongside Iran’s permit requirements and US naval blockade declarations, as these dependencies dictate whether the 60-arrival threshold is met[3][4]. Recent data from 18 June showing 25 verified crossings offers a tentative signal of recovery, yet war risk insurance premiums remain over 16 times normal, and rerouting via the Cape of Good Hope adds 14 extra transit days, sustaining financial pressure[3][6].
Regulatory frameworks such as Germany’s GlüStV and US CFTC reach influence market accessibility, particularly the “no-KYC up to $1,500” provision that allows traders to access this prediction without identity verification, provided transaction limits are respected. This specific market’s accessibility hinges on compliance with these thresholds, ensuring that participation remains within legal boundaries while avoiding the administrative burdens of full KYC processes. The market resolves automatically once IMF PortWatch publishes the required 7-day average, or upon data exhaustion, with no manual intervention required[7].
Methodology
This overview of Strait of Hormuz traffic returns to normal by December 31? 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 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.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Polymarket Tax 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.
- 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.
- 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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