What are the long-run effects of permanent changes to the economy? We characterize long-run comparative statics for a broad class of models in terms of expenditure shares, substitution elasticities, and capital supply elasticities. Our key insight is that long-run analysis can be performed using...

When available financial securities allow investors to optimally diversify risk across countries, standard theory implies that exchange rates should reflect this behavior. However, exchange rates observed in the data deviate from these predictions. In this paper, we develop a framework to value...

Monetary rules may have a large effect on the outcome of trade wars if central banks target the CPI inflation rate or more generally changes in the relative price of traded goods. We lay out a two-country open-economy model with sticky prices where countries engage in trade wars. In the presence...

This paper shows that the outcome of trade wars for tariffs and welfare will be affected by the monetary policy regime. The key message is that trade policy interacts with monetary policy in a way that magnifies the welfare costs of discretionary monetary policy in an international setting. If...

We quantify the macroeconomic effects of the tariff measures announced (but not entirely implemented yet) on Liberation Day (April 2nd, 2025) through the lens of a New-Keynesian two-country model calibrated to the US and the rest of the world. We study both a unilateral 10pp tariff increase and...

While Japanese exports are generally considered invoiced mainly in U.S. dollars (USD), this study presents contrary evidence that most Japanese firms choose yen-invoiced exports. Surprisingly, only the top one percent of firms in size tend to choose USD-invoiced exports, based on the Japan...

We revisit a central question for international macroeconomics: the response of export prices and quantities to movements in the exchange rate (ER). We use granular export data for Chile and study how the effects of ER movements vary over time with the currency of invoicing and the destination...

Consumers access foreign goods by purchasing them domestically or shopping abroad. We present new facts on cross-border shopping by Swiss households showing, for example, that prices of identical products are lower in neighboring countries, cross-border shopping shares fall with distance to the...

This paper studies how a rise in China's share of U.S. imports could lower pass-through of exchange rates to U.S. import prices. We develop a theoretical model with variable markups showing that the presence of exports from a country with a fixed exchange rate could alter the competitive...

The traditional case for flexibility in nominal exchange rates assumes that there is nominal price stickiness that prevents relative prices from adjusting in response to real shocks. When prices are sticky in producers' currencies, nominal exchange rate changes can achieve the relative price...