Using Stock Returns to Assess the Aggregate Effect of the U.S.‑China Trade War
During 2018-19, the U.S. levied import tariffs of 10 to 50 percent on more than $300 billion of imports from China, and in response China retaliated with high tariffs of its own on U.S. exports. Estimating the aggregate impact of the trade war on the U.S. economy is challenging because tariffs can affect the economy through many different channels. In addition to changing relative prices, tariffs can impact productivity and economic uncertainty. Moreover, these effects can take years to become apparent in the data, and it is difficult to know what the future implications of a tariff are likely to be. In a recent paper, we argue that financial market data can be very useful in this context because market participants have strong incentives to carefully analyze the implications of a tariff announcement on firm profitability through various channels. We show that researchers can use movements in asset prices on days in which tariffs are announced to obtain estimates of market expectations of the present discounted value of firm cash flows, which then can be used to assess the welfare impact of tariffs. These estimates suggest that the trade war between the U.S. and China between 2018 and 2019 had a negative effect on the U.S. economy that is substantially larger than past estimates.
Does Trade Uncertainty Affect Bank Lending?
The recent era of global trade expansion is over. Faced with increased geopolitical risk, fragile foreign supply chains, and uncertainties in the international trade environment, firms are postponing entry into foreign markets and pulling back from foreign activities (IMF 2023). Besides its direct effects on real activity, the recent rise in trade uncertainty has potentially important implications for the financial sector. This post describes how the lending activities of U.S. banks were affected by the rise in trade uncertainty during the 2018-19 “trade war.” In particular, banks that were more exposed to trade uncertainty contracted lending to all of their domestic nonfinancial business borrowers, regardless of whether these borrowers were facing high or low uncertainty themselves. Furthermore, banks’ lending strategies exhibited the type of “wait-and-see” behavior usually found in corporate firms facing investment decisions under uncertainty, and the lending contraction was larger for those banks that were more financially constrained.
The Investment Cost of the U.S.‑China Trade War
Starting in early 2018, the U.S. government imposed tariffs on over $300 billion of U.S. imports from China, increasing the average tariff rate from 2.7 percent to 17.5 percent. Much of the escalation in tariffs occurred in the second and third quarters of 2019. In response, the Chinese government retaliated, increasing the average tariff applied on U.S. exports from 5.7 percent to 20.4 percent. Our new study finds that the trade war reduced U.S. investment growth by 0.3 percentage points by the end of 2019, and is expected to shave another 1.6 percentage points off of investment growth by the end of 2020. In this post, we review our study of the trade war’s effect on U.S. investment.
Trade Policy Uncertainty May Affect the Organization of Firms’ Supply Chains
Global trade policy uncertainty has increased significantly, largely because of a changing tariff regime between the United States and China. In this blog post, we argue that trade policy can have a significant effect on firms’ organization of supply chains. When the probability of a trade war rises, firms become less likely to form long-term, just-in-time relationships with foreign suppliers, which may lead to higher costs and welfare losses for consumers. Our research shows that even in the absence of actual tariff changes, an increased likelihood of a trade war can significantly distort U.S. imports.