National Bank Open: Terence Atmane vs Jakub Mensik

Platform comparison

Market context

Terence Atmane and Jakub Mensik are scheduled to meet at the National Bank Open, and the market’s **15% YES** price is notably below most pre-match tennis pricing that has Mensik as the favourite. Recent previews and odds screens have Mensik around the low-to-mid 60s in model probabilities, with several books implying he should advance comfortably, while Atmane’s path depends on pushing the match into a tighter, higher-variance contest.[1][2][11][15][16]

For traders, the main watchpoints are the official ATP/National Bank Open order of play, any late start changes, and whether either player withdraws or the match is moved beyond the settlement window. This market’s rules mean a no-contest, tie, or a delay of more than seven days without a winner leads to a 50-50 resolution, so tournament scheduling matters as much as on-court performance. Comparable ATP markets tend to reprice sharply on confirmed line-ups, injury updates, and live score state, especially where a higher-ranked player like Mensik is already carrying market support.[4][6][18][19]

From a regulatory and access perspective, the framing is straightforward: German GlüStV issues matter because prediction-market participation can be treated differently depending on whether an offering is viewed as gambling, financial speculation, or a grey-area contingent contract, and US CFTC reach is relevant where a platform is accessible to US persons or cleared through US-facing infrastructure. On this specific market, “no-KYC up to $1,500” means small-volume access may be possible without identity verification, but it does not remove jurisdictional restrictions or tax reporting considerations tied to the user’s residence and the venue’s compliance rules.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of National Bank Open: Terence Atmane vs Jakub Mensik 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.