New research from Fed economists argues that tariffs act as demand shocks, reducing economic activity and employment and, counterintuitively, pushing inflation downward in the short term. Here’s what that means for the economy.
The Unexpected Punch of Tariffs on Inflation
A new working paper from the San Francisco Federal Reserve has turned conventional wisdom on its head: tariffs, long assumed to stoke inflation, may actually lower it, at least in the short term. According to economists Régis Barnichon and Aayush Singh, when tariffs rise, they create uncertainty, spook investors and consumers, and lead to a drop in demand. That collapse in demand, in turn, slams economic activity so hard that inflation falls rather than rises.
This finding challenges long-standing economic theory. In standard models, higher import costs should raise prices a “cost-push” inflation effect. But the Fed researchers say the reality looks more like a “demand shock”: output slows, unemployment increases, and inflation moves in the same direction as joblessness, not opposite it.
How Tariffs Trigger a Demand Shock
Barnichon and Singh put forward two key mechanisms to explain how tariffs dampen demand. First, tariffs introduce economic uncertainty. When consumers and companies are unsure about future costs, they postpone spending and investment. That decline in confidence shows up quickly as slowing economic growth.
Second, the study points to financial market disruptions: higher tariffs lead to stock price drops and more volatility. These jolts reduce wealth and make businesses more cautious. In their historical analysis, the researchers found that a sustained 4-percentage-point tariff increase before World War II lowered inflation by about 2 percentage points—and raised unemployment by around 1 point.
Why This Challenges Traditional Trade Theory
Economists have long warned that tariffs act like a tax on imported goods, driving up consumer prices and putting a burden on the economy. But the Fed’s analysis suggests that the broader macroeconomic reaction may not follow that textbook pattern.
Instead of pure “supply shock” inflation, Barnichon and Singh argue that tariffs function less as a simple cost increase and more as a drag on demand. The fallout from slower economic activity and weaker wage growth means fewer people spending, which cools inflation.
Their finding aligns with another recent study from the Bank for International Settlements, which also noted that tariffs on the receiving side can resemble demand shocks. Together, these analyses complicate the simple narrative that trade barriers only raise costs.
The Fed Faces a Policy Dilemma
These new insights raise difficult questions for the Federal Reserve. On one hand, tariffs are expected to raise prices on certain goods, potentially prompting inflation. On the other hand, if those very tariffs weaken the economy, they could generate downward pressure on inflation overall and push up unemployment.
This tension puts the Fed in a tricky place. If inflation cools because of falling demand, the central bank might feel pressure to cut interest rates. But if it does so, it risks undermining its fight against longer-term price pressures. And given recent uncertainty in trade policy, predicting the exact trajectory of inflation becomes even harder.
Some Fed officials have openly expressed these worries. The Chicago Fed’s Austan Goolsbee called the tariff effect a “stagflationary shock” a situation where inflation and unemployment rise together, complicating monetary policy.
Bigger Picture: What This Means for the Economy
If the Fed’s findings hold, the broader implications of using tariffs as a policy tool become more complicated. Rather than simply being a lever to protect domestic industries or drive up foreign goods’ prices, tariffs could produce economic slowdown and job losses—while offering a temporary relief from inflation.
This also raises a broader question about the costs of protectionism. While tariffs may seem politically attractive, especially in industries facing competition, they may undercut consumer confidence and investment more than previously thought.
For households, the pain may come not just from pricier imported goods but also from a weaker job market and lower overall economic activity. That could erode trust in both trade policy and monetary policy.
For the Fed, accurately modeling these effects will be more important than ever. Traditional inflation models may no longer fully capture how trade barriers impact the economy.
Why This Research Is Crucial
In a world of escalating trade tensions, understanding how tariffs really work matters.
For policymakers, the Fed’s research provides a warning: tariffs are not a simple tool for controlling inflation—they may even backfire.
For the Fed, it suggests that trade policy needs to be factored more deeply into its economic forecasts and interest-rate decisions.
For the public, the findings raise fundamental questions about who pays the cost of protectionist policies: consumers, workers, or both.
Tariffs might still be justified for national security or industrial goals. But if they are contributing to economic weakness while failing to trigger sustained inflation, their role in fiscal and monetary debates deserves serious rethinking.
In short: tariffs may not always fuel inflation in some cases; they may be slowing it, at real cost to jobs and growth. And for the Fed, that means the trade-inflation equation is far more complex than many assumed.
