Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
95% | 5% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
95% | 5% | 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 |
|---|---|
| 0 | 95% |
| 1 | 3% |
| 4 | 1% |
| 2 | 0% |
| 3 | 0% |
| 5 | 0% |
| >5 | 0% |
Market context
A magnitude 6.5 or larger earthquake anywhere on Earth during the market window is the underlying event, and the probability should be read against how often large quakes cluster in short bursts rather than as isolated incidents. The USGS uses a global magnitude-6+ catalogue for 2026, and independent significant-event lists show multiple M6.5+ earthquakes already recorded this year, including offshore Honshu, Kamchatka, Mindanao and Venezuela, which means the market is pricing a fairly routine seismological threshold rather than an extreme outlier.[1][6][9]
Recent comparable cases also show why a 95% YES price is not unusual for a broad one-week global window. The British Geological Survey’s recent-world-events feed logged a 6.8 in Kyushu, Japan on 28 July 2026, alongside several other 6.5+ events in June and July, while the Mindanao sequence produced aftershocks with at least two 6.5 events, illustrating how a major rupture can increase the odds of additional qualifying shocks in the same period.[6][13] For market-reading purposes, that kind of background raises the base rate even before any fresh mainshock appears.
From a regulatory and access perspective, this is the sort of science-linked market that can still fall within the reach of US derivatives oversight if offered to US persons or through US-facing infrastructure, because the CFTC has asserted broad anti-manipulation and enforcement reach over event-contract activity tied to commodities and derivatives. For German users, GlüStV treatment matters because the Staatsvertrag on gambling can bring event-style wagering into a stricter licensing and localisation framework, so platform access is not just a pricing question but a venue-and-jurisdiction question. A “no-KYC up to $1,500” limit usually means small deposits or withdrawals can be used with only basic account checks, which may make the market accessible for low-stakes participation, but it does not remove residency, sanctions, or platform eligibility controls.
Methodology
This overview of How many 6.5 or above earthquakes August 3 - August 9? 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
- 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.
- 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.
Trade How many 6.5 or above earthquakes August 3 - August 9? on Polymarket Tax UK
Live order book, 0% fees, USDC settlement in seconds.
Open live market →