Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
13% | 87% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
13% | 87% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Market context
Polymarket currently prices this contract at about **13% YES** on Polygon, with traders posting and matching **USDC** against conditional tokens that pay out $1 if a qualifying Chinese military offensive to seize any inhabited part of Taiwan begins before the deadline. That leaves the market roughly saying the far likelier outcome is no invasion by 31 December 2027, but it still assigns a meaningful tail risk to escalation. The relevant question for holders is not whether tensions rise, but whether Beijing crosses the line from coercion, drills, and pressure into an operation intended to establish control.
That 13% view sits against a backdrop of repeated official and quasi-official assessments that China is not judged to have a fixed 2027 invasion timetable. The US intelligence community said in its 2026 Annual Threat Assessment that Chinese leaders do not currently plan to execute an invasion in 2027, while also warning that coercive activity around Taiwan is likely to continue.[15] Similar reporting from Sky News and Fox News on the same assessment said the intelligence view is that Beijing is not planning an invasion by 2027 and has no fixed timeline for unification.[11][2] That aligns with the broader market logic: a full invasion is a much higher bar than grey-zone pressure, blockade testing, or routine exercises.
For traders, the main catalysts are official speeches, military exercises, weapons deliveries, and any shift in US-Taiwan-China signalling. Polymarket’s own market text notes that recent diplomatic engagement and reduced military signalling have reinforced the view that invasion remains unlikely through 2027.[1] Watch for changes in PLA posture, Taiwan’s annual exercises, major party or leadership statements in Beijing, and any US or allied intelligence updates that alter the baseline. Because settlement depends on official confirmation or a consensus of credible reporting, sustained, widely reported deployment patterns would matter more than isolated rhetoric.[1]
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade Will China invade Taiwan by December 31, 2027? on PolyGram
Live order book, 0% fees, USDC settlement in seconds.
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