Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| July 24 | 100% |
| August 4 | 100% |
| August 19 | 10% |
| August 25 | 9% |
| August 12 | 8% |
| August 13 | 8% |
| August 14 | 8% |
| August 16 | 8% |
| August 26 | 8% |
| August 18 | 7% |
| August 20 | 7% |
| August 23 | 7% |
| August 27 | 7% |
| August 28 | 7% |
| August 29 | 7% |
| August 30 | 7% |
| August 31 | 7% |
| August 15 | 6% |
| August 17 | 6% |
| August 22 | 6% |
| August 9 | 5% |
| August 10 | 5% |
| August 24 | 5% |
| August 11 | 4% |
| August 21 | 4% |
| August 5 | 1% |
| August 8 | 1% |
| July 25 | 0% |
| July 26 | 0% |
| July 27 | 0% |
| July 28 | 0% |
| July 29 | 0% |
| July 30 | 0% |
| July 31 | 0% |
| August 1 | 0% |
| August 2 | 0% |
| August 3 | 0% |
| August 6 | 0% |
| August 7 | 0% |
Market context
A Houthi strike on a commercial ship would fit a pattern that has already produced repeated attacks on tankers and other merchant vessels in the Red Sea, including missile, drone and boarding incidents since late 2023. Reuters reported in July 2026 that the group had resumed attacks on Saudi-linked shipping and that maritime traffic through Bab el-Mandeb and the wider Red Sea remained disrupted, which is why a 100% crowd-implied probability mainly reflects the market’s belief that an incident is already effectively priced in rather than an ordinary event-risk trade[10][9][16].
For historical comparison, the key reading is that Houthi claims have often been broad, but this market only counts a direct kinetic hit on a commercial ship or a forcible seizure, not intercepted missiles or military targets. Reuters and AP both reported claims of attacks on Saudi oil tankers in July 2026, while earlier Houthi operations since 2023 showed a willingness to use drones, cruise missiles and boarding tactics against shipping in the Red Sea and Bab el-Mandeb corridor[6][12][3]. That makes the current pricing easier to understand: once a blockade posture is announced, traders tend to assume further verified ship incidents are more likely than not within the settlement window[2][11].
On catalysts, the main watchpoints are Houthi media statements, shipping advisories, and any fresh maritime incident reports from Reuters, AP, Lloyd’s List or the Joint Maritime Information Center; those are the sources most likely to clarify whether an event meets the market’s narrow resolution rules. For accessibility, the regulatory framing matters: a German participant would still need to consider GlüStV restrictions on gambling-style offerings, while US traders face the practical reality that CFTC reach can apply where a platform or activity has sufficient US nexus; “no-KYC up to $1,500” usually means small balances or withdrawals may be usable with lighter identity checks, but that does not remove jurisdictional limits or the need for account-level verification if thresholds or compliance triggers are reached.
Methodology
This overview of Houthis successfully target shipping on 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.
UK Frequently Asked Questions
- 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.
- Is Polymarket regulated by the UKGC?
- No. Polymarket is not licensed by the UK Gambling Commission (UKGC). It is a decentralised prediction market operated under US regulation. UK traders can use it but do not benefit from UKGC dispute resolution or player protection requirements.
- What are the HMRC tax rules on Polymarket profits for UK traders?
- Polymarket profits are treated as cryptocurrency disposal events by HMRC. Each USDC settlement is a taxable event subject to Capital Gains Tax (CGT). For 2026/27, the CGT rate is 18% (basic rate) or 24% (higher rate). The annual CGT exemption is £3,000. Report via HMRC Self Assessment if your total crypto gains exceed £3,000 or proceeds exceed £50,000.
- Does Polymarket KYC apply to UK users?
- Yes. Polymarket requires KYC (Know Your Customer) verification for all users, including UK residents. You must provide a government-issued photo ID and a selfie. The process typically takes 5–10 minutes via their ID verification provider.
- What is the legal difference between Polymarket and Betfair Exchange for UK traders?
- Betfair Exchange is UKGC-licensed, meaning UK consumer protections apply and winnings are typically tax-free. Polymarket is not UKGC-licensed — it operates under decentralised blockchain rules. Profits from Polymarket are subject to HMRC CGT as crypto disposals. Choose based on your regulatory preference and tax situation.
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