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 |
|---|---|
| Roehampton: Peter Makk vs Marcus Walters | 100% |
| Completed Match | 100% |
Market context
The Roehampton qualifying tournament in August 2026 will feature a men's singles match between Peter Makk and Marcus Walters, scheduled for 18 August at 08:00 ET. Roehampton is a grass-court event held in Great Britain and forms part of the ATP qualifying circuit. The market resolves to the player who advances from this single match; if the fixture is cancelled, ends in a tie, or remains unfinished beyond seven days without a determined winner, settlement defaults to 50–50.
The 100% crowd-implied probability reflects either extreme confidence in one player's superiority or sparse liquidity in this particular qualifying-round pairing. Historical patterns in lower-tier ATP qualifying markets show such extreme readings often persist when one competitor holds a substantial ranking advantage or has recently demonstrated form significantly above their opponent. Comparable qualifying matches at grass-court events have occasionally seen late withdrawals or scheduling shifts, particularly when players are managing injury or competing in overlapping tournaments. The settlement window closes 25 August 2026, allowing a seven-day buffer for match completion or rescheduling before resolution.
Traders should monitor official ATP tour announcements for any draw changes, player withdrawals, or injury updates in the fortnight before the scheduled date. Grass-court conditions at Roehampton can influence match outcomes; weather delays are not uncommon in August. Both players' recent qualifying results and ranking trajectories will provide context for assessing whether the current probability reflects genuine form differential or market inefficiency. Under German GlüStV regulations, this market may face restrictions if accessed from Germany; US CFTC reach typically does not extend to prediction markets settled on sports outcomes. No-KYC access up to $1,500 USD on most platforms means traders can participate without identity verification below that threshold, though settlement and withdrawal procedures vary by jurisdiction.
Methodology
This overview of Roehampton: Peter Makk vs Marcus Walters 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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