Will China invade Taiwan by December 31, 2027?

Platform comparison

Market context

The real-world event at stake is whether China launches a full-scale military offensive to seize any inhabited part of Taiwan before the end of 2027. Current market pricing implies a 15% chance of this occurring, a figure that must be weighed against a decade of escalating but contained coercion. Historically, China’s most aggressive moves have been reactive drills rather than invasions: the 2022 Fourth Taiwan Strait Crisis followed Nancy Pelosi’s visit, and the 2024 Joint Sword-2024A exercises occurred after William Lai’s inauguration [1][2]. These operations featured live-fire drills, air sorties, and ballistic missile launches designed to simulate blockades, yet they stopped short of crossing the threshold into actual invasion [1][3]. The pattern suggests China uses military pressure to signal displeasure and test defences without committing to the irreversible step of war, framing the current 15% probability as a measure of breakout risk rather than baseline expectation.

A power-user evaluating this market programmatically should monitor specific catalysts that could shift the odds from low to high. Key dependencies include US legislative schedules, particularly any new arms sales or high-level visits to Taiwan, and China’s internal political calendar, such as the 20th anniversary of the 2008 reunification talks or major PLA anniversaries. Recent news confirms China is already simulating blockades of Keelung and Kaohsiung ports with its largest war games to date, involving 71 aircraft and 24 vessels [3][4]. Traders should watch for official announcements from Beijing’s Eastern Theatre Command regarding “Justice Mission” iterations or sudden shifts in rhetoric from “reunification” to “resolute action.” A sudden increase in live-fire intensity near inhabited islands, or a formal declaration of a no-fly zone over Taiwan, would be the primary triggers for conditional orders to buy YES, as these would indicate a transition from rehearsal to execution [3][5].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Will China invade Taiwan by December 31, 2027? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Polymarket Bot UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.