Fitch Cuts US Effective Tariff Rate to 7.4% Amid Section 301 Shift

The arithmetic of American tariffs just shifted. The country's effective tariff rate—the weighted average duty paid on all imports—has dropped to 7.4 percent from 9.4 percent, according to Fitch Ratings. The change matters because it reshapes the cost calculus for anyone importing goods into the United States, and it reveals how tariff policy can move faster than the supply chains it affects.

The decline stems from two forces working in tandem. First, the Trump administration replaced a temporary 10 percent global surcharge with a more targeted framework of duties under Section 301 of trade law. That temporary surcharge, imposed under Section 122 authority after the Supreme Court invalidated an earlier tariff regime, ran from February 24 through July 24. When it expired, it gave way to a more granular system of tariffs applied to 60 economies based on forced-labor investigations conducted by the U.S. Trade Representative. Second, Fitch updated its calculations using actual trade flows from January through May 2026 instead of relying on 2024 import patterns. That shift in the composition of what America actually buys from whom accounts for much of the additional relief.

The new Section 301 framework operates in tiers. Mexico, Canada, India, and the United Kingdom face a fixed 10 percent additional tariff on top of their baseline rates. China, Vietnam, and most other investigated economies face 12.5 percent. For the European Union and Taiwan, the combined duty cannot exceed 10 percent—meaning products already taxed at that level or higher incur no additional charge, while lower-taxed goods face only enough duty to reach the ceiling. Japan, South Korea, and Switzerland operate under a 12.5 percent combined cap. Brazil stands apart, subject to a 25 percent Section 301 tariff with significant product carve-outs. The framework also includes broad exclusions that spare certain goods from the new duties entirely.

The winners and losers are now clear. China's effective rate climbed to 22.3 percent from 19.2 percent—the highest among major trading partners. Brazil's rose to 14.8 percent from 11.4 percent. Japan's increased to 13.3 percent from 12.6 percent. Switzerland and Canada both saw increases, to 7.1 percent and 5.3 percent respectively. But Vietnam, Taiwan, Mexico, India, and South Korea all saw relief. Vietnam's rate fell to 10.2 percent from 13.2 percent. Taiwan dropped sharply to 2.8 percent from 5.5 percent. Mexico fell to 3.7 percent from 5.0 percent. India declined to 8.3 percent from 10.7 percent. South Korea to 9.7 percent from 11.3 percent.

Fitch's analysis reveals something important about how tariff policy actually works in practice. If trade flows had remained frozen at 2024 levels, the policy change alone would have reduced the effective rate to 8.4 percent. The further drop to 7.4 percent shows that American importers have already begun shifting their sourcing. They are buying more from countries facing lower duties and less from those facing higher ones—a rational response that happens almost immediately once the incentives change.

One variable remains unresolved. Fitch estimates that Canadian tariffs, as currently designed, cover $17 billion of goods. If those tariffs are not implemented as announced, Canada's effective rate would fall by 2.2 percentage points, and the overall U.S. effective rate would decline by about 0.25 percentage point. That possibility hangs over the calculations, a reminder that tariff policy remains subject to political reversal and that supply chains are still adjusting to rules that may themselves shift again.