Why Is the Dollar Falling When It Should Be Rising?

In standard economics, a country that raises tariffs should see its currency strengthen. Imports fall, the trade balance improves, and a firmer exchange rate offsets part of the price increase for consumers. That was the playbook many analysts expected after the White House unveiled sweeping new tariffs on April 2. A week later, the market has written a different script. The dollar has weakened against the euro, the yen and the Swiss franc, and long-dated US Treasury yields have risen rather than fallen as investors dumped risk assets.

That combination, a falling currency alongside falling bond prices, is unusual for the United States. It is the pattern investors associate with countries facing a loss of confidence, and it is the reason the tariff shock has turned into a broader debate about the dollar's role.

What the textbook misses

The textbook assumes that tariffs are a stable policy chosen for economic reasons and applied predictably. Markets are instead reacting to how the policy was made. The rates announced on April 2 were far higher than most forecasts, were based on a formula tied to bilateral trade deficits, and applied to allies and rivals alike. Retaliation from China followed within days, and the US responded with further increases, taking the rate on Chinese goods above 100 percent as new duties took effect overnight.

When policy looks unpredictable, the question for investors shifts from the trade balance to the growth outlook and to the credibility of economic management. Expectations of a US slowdown, and of faster Federal Reserve rate cuts, have weighed on the dollar. At the same time, foreign holders appear to be trimming exposure to US assets altogether, which pushes down both the currency and Treasuries.

The moves have been large by the standards of major currencies. The euro has climbed back above levels it last saw before the US election, and the yen has strengthened even as Japan faces its own tariff exposure. For a currency that usually benefits when the rest of the world panics, the dollar's behavior has surprised many investors who had positioned for the opposite outcome.

It is also worth remembering where the dollar started. It entered the year near multi-decade highs on a trade-weighted basis, supported by strong US growth and the expectation that the new administration's policies would keep interest rates elevated. A currency priced for American exceptionalism has further to fall when that story is questioned.

Three explanations on trading desks

• Growth repricing. Tariffs act as a tax on consumers and businesses. If the US economy slows more than its partners, rate differentials narrow and the dollar loses its yield advantage.
• Deleveraging. Hedge funds had built large positions in so-called basis trades that rely on cheap financing of Treasuries. Forced unwinding in volatile markets can push yields up regardless of fundamentals.
• A safe-haven question. In past crises the dollar and Treasuries rallied as global investors sought safety. This time, with the shock originating in Washington, some money has gone to the yen, the Swiss franc, gold and European government bonds instead.

None of these explanations requires a collapse in confidence in American institutions. But the third one is what makes the episode politically significant. The dollar's status rests on the assumption that US policy is rules-based and predictable. Sudden, large policy moves announced with little consultation test that assumption.

The dollar is not losing its crown this week. It is being asked, for the first time in years, to justify it.

Who wins and who loses from a weaker dollar

A weaker dollar partly cushions the tariff blow for US exporters and helps emerging markets that borrow in dollars. It also raises the local-currency cost of US holdings for foreign investors, who have been heavily overweight American stocks after years of outperformance. If those investors decide to hedge more of their currency exposure or rebalance toward home markets, the dollar could weaken further even without a crisis.

For China, the picture is more complicated. Beijing has allowed the yuan to drift weaker in a controlled way, a signal that it is prepared to use the exchange rate as a buffer. A sharp devaluation, however, would risk capital outflows and further escalation. The yuan's daily fixing has therefore become a closely watched political signal in its own right.

Europe and Japan face a different trade-off. A stronger euro and yen make their exports less competitive at exactly the moment they are being hit by tariffs, while helping to contain imported inflation. For the European Central Bank, which has already been cutting rates, a firmer euro strengthens the case for further easing. For the Bank of Japan, which has been trying to normalize policy, a sharply stronger yen complicates the path.

What would change the direction

Markets are looking for signs that the administration is willing to negotiate, pause or exempt key partners, as well as for any sign of stress in the Treasury market serious enough to prompt official action. Comments from the Federal Reserve will also matter, since investors want to know whether the central bank sees tariffs mainly as an inflation risk or a growth risk.

Beyond the immediate turmoil, the most important question is whether this episode leaves a lasting mark. Reserve managers and pension funds move slowly, but they do move. If they conclude that US policy risk has structurally increased, the premium the world pays to hold dollars could shrink over years rather than days.

A policy shock, priced like a scandal

The tariff announcement was not a scandal in the conventional sense. There was no leak, no resignation, no investigation. Yet the market's reaction resembles the ones that follow political crises elsewhere: a currency and a bond market falling together because investors are unsure who is steering, and toward what. That is a pattern worth tracking closely in the weeks ahead. As always, this is analysis, not investment advice.