US tariffs cost Americans far more than foreign exporters, according to new research that challenges long-standing political claims. A detailed study by the Kiel Institute for the World Economy shows that the overwhelming majority of tariff costs are absorbed within the United States rather than by overseas sellers.
What the Study Found About US Tariffs
The research concludes that roughly 96% of US tariff costs are paid by American importers and consumers. Foreign exporters, by contrast, cover only about 4% of the burden. Researchers described the tariffs as a tax that falls “almost entirely on Americans,” contradicting repeated claims that other countries bear the cost.
The study analyzed more than 25 million shipment records worth nearly $4 trillion, covering trade flows from January 2024 through November 2025. According to the findings, US import prices rise almost directly in line with new tariffs, while trade volumes decline.
Why Americans End Up Paying More
US tariffs typically hit importers first, forcing wholesalers and manufacturers to decide whether to absorb the added cost or pass it on. In most cases, those higher costs move down the supply chain to retailers and, ultimately, consumers. The research also found reduced product availability in the US, particularly for goods relying on foreign inputs.
This near-total pass-through effect means tariffs function much like a domestic consumption tax, increasing prices on both imported products and American-made goods that depend on overseas components.
Contradicting Political Messaging
The findings directly contradict claims that tariffs are paid by foreign governments or exporters. The study notes that US customs revenue rose by about $200 billion in 2025, but that increase came largely from American buyers rather than external trading partners.
Similar conclusions have been reached by researchers at Harvard Business School and Yale’s Budget Lab, as well as analysts at major banks, reinforcing the view that US tariffs cost Americans far more than advertised.
Ongoing Trade and Legal Uncertainty
Despite the economic evidence, tariffs remain a central tool in US trade policy. Additional duties have been threatened against European countries, including Denmark, amid broader geopolitical disputes. At the same time, several tariff measures face legal challenges, with the Supreme Court expected to rule on whether they were imposed lawfully under emergency national security powers.
The evidence is increasingly clear that US tariffs cost Americans rather than foreign exporters. While tariffs generate significant government revenue, the burden falls primarily on US businesses and consumers through higher prices and reduced choice. As trade policy debates continue, the study adds fresh weight to arguments that tariffs function less as a foreign penalty and more as a domestic tax.
