This paper develops a dynamic real-options model of tariff deterrence in which the exporting country, though subject to the importing country's market power, assumes the role of leader in a Stackelberg framework under uncertainty by acting preventively to dissuade the importer from imposing a...

In April 2025, the United States abruptly announced exceptionally high tariffs on imports from more than 180 countries (levels not seen in nearly 150 years) shocking the global economy. Within a week, most measures were postponed for 90 days (until July 9, 2025), but tariffs on Chinese goods...

How do import tariffs affect employment? We develop an empirical strategy to identify the effects of tariffs using difference-in-differences, comparing anti-dumping (AD) investigations resulting in dumping tariffs to those not resulting in dumping tariffs. We find that an AD tariff decreases...

Transaction-level quantity discounts are a pervasive feature of US trade, shaping both price variation and tariff incidence. Using administrative microdata, we show that these discounts reflect transaction-level scale economies rather than market power. Accounting for these micro-level economies...

We study how firms' expectations respond to prospective tariff shocks using a randomized survey experiment among Swiss manufacturing firms. When confronted with potential U.S. tariffs, respondents expect sizable declines in turnover and investment, yet anticipate increases in ex-tariff export...