Why did the dollar weaken after new tariffs instead of strengthening?
Core argument: The dollar's effective exchange rate sharply depreciated following the Liberation Day tariff announcement, contrary to the prediction of standard international macroeconomic models and the evidence from the first Trump tariffs.
Contrary to the prediction of standard international macroeconomic models and the evidence from the first Trump tariffs, on Liberation Day the dollar effective exchange rate sharply depreciated rather than appreciating. Unpacking the impact on broad dollar indexes by looking at the reaction of the main bilateral pairs reveals a striking divergence in currency responses Figure 2 plots the daily change in the bilateral exchange rate against the tariff rates announced on Liberation Day. The figure shows that all G10 currencies appreciated against the US dollar in the 24 hours following the announcement, meaning the dollar weakened against those currencies. In contrast, the most floating emerging market currencies either appreciated less or depreciated against the dollar. The strong appreciation of the G10 currencies implies that that foreign advanced economies reduced exposure to US dollar-denominated assets, selling dollars in favour of other major currencies to rebalance their portfolios, as trade flows cannot adjust instantaneously.




