20% — Will China invade Taiwan?
Kalshi 20% · 5 contracts · $51 volume · medium confidence
Updated 2026-09-20 20:47:27 UTC

Why this matters:
This 20% probability reflects market estimates of a Chinese military invasion of Taiwan occurring within a specific timeframe. The current level reflects a relatively low but non-negligible risk assessment, likely influenced by factors including cross-strait military dynamics, U.S. commitment signals, and Taiwan's defensive capabilities. Related predictions on the page show even lower near-term invasion risk (3% before Jan 1, 2027) but higher medium-term warnings (38% probability of a State Department Level 4 travel warning by 2030). The main drivers of probability shifts would be changes in Chinese military posture, U.S.-China relations, or Taiwan's strategic status. Key upcoming indicators include Taiwan's defense spending decisions, U.S. arms sales announcements, and any major military exercises or diplomatic incidents in the Taiwan Strait.

Key factors:
- Cross-strait military balance: China's military modernization and amphibious capability development versus Taiwan's defensive systems and training readiness
- U.S. commitment signals: Strength and clarity of U.S. security guarantees to Taiwan, reflected in arms sales, military advisors, and official statements
- Economic interdependence: Trade relationships and supply-chain ties between China, Taiwan, and other nations that create incentives against conflict
- Taiwan's strategic status: International recognition patterns and Taiwan's own political stability and defense posture
- Historical precedent gaps: Absence of large-scale cross-strait military operations since 1949, contrasted with recent increased military exercises and rhetoric

Contracts:
- Will the U.S. State Department issue a Level 4 warning for Taiwan before Jan 1, 2028?: Before Jan 1, 2028 — 16¢ Kalshi $50 (weight 99%)
- Will China overtake US GDP by 2030?: By 2030 — 14¢ Kalshi $1 (weight 1%)
- Will the U.S. State Department issue a Level 4 warning for Taiwan before Jan 1, 2027?: Before Jan 1, 2027 — 3¢ Kalshi $0 (weight 0%)
- Will the U.S. State Department issue a Level 4 warning for Taiwan before Jan 1, 2029?: Before Jan 1, 2029 — 27¢ Kalshi $0 (weight 0%)
- Will the U.S. State Department issue a Level 4 warning for Taiwan before Jan 1, 2030?: Before Jan 1, 2030 — 38¢ Kalshi $0 (weight 0%)

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## Methodology

SimpleFunctions aggregates live YES-side prices from Kalshi and Polymarket contracts bound to this question. For binary topics the headline is the liquidity-weighted mid-price (weight = log(1 + 24h volume) × freshness, where freshness is 1.0 if updated <24h, 0.7 if <7d, 0.4 otherwise). For multi-outcome (winner-take-all) topics the headline is the current leader's price — disjoint outcomes are never arithmetically averaged. Snapshots refresh every 5 minutes during market hours.

## SF Signal

- SF Index, regime, and 30d Brier calibration are computed separately and surfaced at https://simplefunctions.dev/admin/calibration.
- No SimpleFunctions index / regime / calibration signal is bound to this topic yet — the headline above is market-derived only.

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*Last verified: 2026-09-20T20:20:49.074Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "20% per prediction markets (SimpleFunctions, September 2026)"
Canonical: https://simplefunctions.dev/answer/china-taiwan
Full data: https://simplefunctions.dev/api/public/query?q=Will%20China%20invade%20Taiwan%3F
Provider: SimpleFunctions — https://simplefunctions.dev