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 |
|---|---|
| Completed Match | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally Set 1 Winner | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally Set 1 O/U 8.5 | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally Set 2 O/U 8.5 | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally Match O/U 21.5 | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally Total Sets: O/U 2.5 | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally Set 2 O/U 9.5 | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally Set 1 O/U 9.5 | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally Match O/U 22.5 | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally Set 2 O/U 10.5 | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally Match O/U 23.5 | 100% |
| National Bank Open: Tatjana Maria vs Caty McNally | 0% |
| National Bank Open: Tatjana Maria vs Caty McNally Set 2 Winner | 0% |
| National Bank Open: Tatjana Maria vs Caty McNally Set Handicap +/-1.5 | 0% |
| National Bank Open: Tatjana Maria vs Caty McNally Set Handicap +/-1.5 | 0% |
| National Bank Open: Tatjana Maria vs Caty McNally Set 1 O/U 10.5 | 0% |
Market context
Tatjana Maria and Caty McNally are scheduled to meet in the National Bank Open, with the market paying out on which player advances. The crowd-implied 37% for Maria leaves McNally as the favourite, which is broadly consistent with recent head-to-head and form snapshots: McNally leads their series 2-0 in some aggregators, including a three-set grass-court win in July 2025, while ranking tables on the eve of the match show McNally at WTA 73 and Maria at 79.[4][11][15]
For reading the price, a useful comparison is that Maria’s game is more established on the tour, but McNally has shown the stronger recent hard-court profile and broader 52-week form in the available statistics.[2][4] The market structure also matters: if the match is not played, is tied, or slips more than seven days beyond the scheduled date without a winner, it settles 50-50, so headline probabilities can move sharply on scheduling risk as well as tennis form.[Market description]
The main catalysts are simple but important: official order-of-play updates, any court changes, and whether the Toronto draw proceeds without weather or injury disruption. Tennis.com lists the Round 1 match in Toronto with Maria and McNally’s current singles rankings at 79 and 73 respectively, which is the cleanest public scheduling reference among the supplied sources.[11] On access, “no-KYC up to $1,500” means a user can usually participate without full identity verification until cumulative activity reaches that threshold, but the market remains subject to the platform’s compliance rules, including geofencing and identity checks where required. German users should also note that German gambling law under the GlüStV can affect access to speculative wagering products, while the US CFTC’s reach matters because event contracts and related trading activity can fall under US derivatives oversight depending on venue, product design, and user location.
Methodology
This overview of National Bank Open: Tatjana Maria vs Caty McNally 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
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Tax UK has a different geo footprint.
- 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.
- 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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