66% — Will it be reported by any of the Source Agencies that the United States and China reach a new mutual tariff agreement, publicly announced or confirmed by both governments before Sep 1, 2026
Leader: Before Jan 1, 2027 at 66% · Kalshi 66% · 4 contracts · $2K volume · medium confidence
Updated 2026-09-24 03:48:16 UTC

Tracks the leading outcome in a winner-take-all prediction market set with 4 outcomes.

Why this matters:
Market participants estimate an 88% probability that the U.S. and China will announce a new mutual tariff agreement before January 1, 2027, with much lower odds (6%) for an agreement by September 1, 2026. The high overall probability reflects ongoing trade negotiations and political incentives for both governments to reach a deal, but the sharp decline in near-term probabilities suggests markets expect any agreement to take several months rather than materialize immediately. Key factors include the stated negotiating positions of both administrations, recent diplomatic communications, and historical patterns of U.S.-China trade negotiations. The timeframe matters significantly: traders are confident a deal will eventually emerge by year-end, but skeptical of imminent resolution within weeks.

Key factors:
- Current status of active trade negotiations between U.S. and Chinese officials, including any scheduled talks or official statements about timeline expectations
- Economic indicators and tariff impacts in both countries that might create urgency or reduce pressure to reach agreement quickly
- Changes in U.S. or Chinese political leadership positions, policy shifts, or public statements that would signal willingness or unwillingness to compromise
- Historical precedent: previous U.S.-China trade agreements and typical negotiation duration from serious talks to public announcement
- Market pricing across the five time-based contracts shows declining probability with shorter deadlines, suggesting traders believe September and October resolution are unlikely but agreement by year-end is probable

Contracts:
- Will it be reported by any of the Source Agencies that the United States and China reach a new mutual tariff agreement, publicly announced or confirmed by both governments before Jan 1, 2027?: Before Jan 1, 2027 — 66¢ Kalshi $120 (weight 7%)
- Will it be reported by any of the Source Agencies that the United States and China reach a new mutual tariff agreement, publicly announced or confirmed by both governments before Dec 1, 2026?: Before Dec 1, 2026 — 55¢ Kalshi $80 (weight 5%)
- Will it be reported by any of the Source Agencies that the United States and China reach a new mutual tariff agreement, publicly announced or confirmed by both governments before Nov 1, 2026?: Before Nov 1, 2026 — 30¢ Kalshi $198 (weight 11%)
- Will it be reported by any of the Source Agencies that the United States and China reach a new mutual tariff agreement, publicly announced or confirmed by both governments before Oct 1, 2026?: Before Oct 1, 2026 — 13¢ Kalshi $1K (weight 77%)

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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: 2026-09-24T03:20:51.092Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "66% per prediction markets (SimpleFunctions, September 2026)"
Canonical: https://simplefunctions.dev/answer/tariffagree-27
Full data: https://simplefunctions.dev/api/public/query?q=Will%20it%20be%20reported%20by%20any%20of%20the%20Source%20Agencies%20that%20the%20United%20States%20and%20China%20reach%20a%20new%20mutual%20tariff%20agreement%2C%20publicly%20announced%20or%20confirmed%20by%20both%20governments%20before%20Sep%201%2C%202026
Provider: SimpleFunctions — https://simplefunctions.dev