In most respects, tariffs are straightforward and easy to understand. They are a simple tax on imported goods from another country. While the basics of tariffs are simple, the impact of imposing tariffs on one's trading partners is uncertain and ripe for unintended consequences.
The Tariffs Cannon
In his first month in office, President Trump confirmed his oft-stated love of tariffs, at least as a negotiating tool. With some exceptions, including Canadian energy products at 10% tariffs, the administration has imposed 25% tariffs on imports from Mexico and Canada and a cumulative 20% tariff on Chinese imports. Ongoing negotiations have resulted in some reprieves and exemptions for a few weeks. President Trump has also unveiled a sweeping plan to impose “reciprocal" tariffs on America's trading partners on a "country-by-country" basis, including 25% tariffs on all EU imports. Reciprocal tariffs would charge U.S. trading partner countries the same percentage of tariffs that these countries are currently imposing on U.S. goods.
While trade policy is a moving target on any given day in Washington, the uncertainty has impacted U.S. equity markets. After gaining 4.6% for the year on a total return basis and reaching an all-time high on February 19th, the S&P 500 is down over 2.2% year-to-date, and the NASDAQ composite has lost almost 6.3%. While tariff announcements can be bluster and a negotiating tactic to force other countries to treat the U.S. more fairly, real problems can arise should the country on the receiving end of U.S. tariffs not back down or even respond by imposing additional tariffs on the U.S., potentially setting off a tit-for-tat trade war. Trade wars can begin with minor trade skirmishes that quickly escalate into an all-out trade war. (Data as of 3/6/2025. Source: Bloomberg)
Tariff Wars Can Lead to Currency Wars
Tariffs can lead not only to trade wars but also currency wars. When a country imposes tariffs, its currency typically increases in value. In contrast, the country on the receiving end of the tariffs may attempt to devalue its currency to mitigate the impact of the tariffs, thereby offsetting the attempt to make another country's exports less competitive.
In response to this devaluation attempt, the country imposing fresh tariffs may seek to devalue its own currency to remain competitive, often called competitive currency devaluation. And this is how tariffs can ultimately lead to currency wars. Currency wars can have serious negative consequences, such as increased volatility in currency markets, inflation, and uncertainty in the global economy.