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CentrePiece article

Tariff confusion

The way that US tariffs were announced doubled their negative impact...Read more...

Blog

LSE United States Politics and Policy:

Confusing US tariff announcements doubled the decline in trade

During 2025 the US administration made more than 50 tariff-related announcements. In new research, Kalina Manova, Dennis Novy, Thomas Sampson and Aaron Tang examine how the complexity of these announcements disrupted US ...Read more...

Blog

VoxEU:

Tariff confusion

The year 2025 was unprecedented in the frequency, complexity, and volatility of US trade policy interventions. This column uses a new database tracking US tariff announcements during the year to show that confusion about...Read more...

CEP discussion paper

Tariff confusion

US trade policy in 2025 was unprecedented in the frequency, complexity and volatility of tariff announcements. This paper presents evidence that the resulting policy environment reduced trade flows because of confusion o...Read more...