A recent analysis by the Kiel Institute for the World Economy found that American importers and consumers bear nearly the entire cost of 2025 tariffs, with foreign exporters absorbing only about 4% of the tariff burden. The study used shipment-level data covering over 25 million transactions valued at nearly $4 trillion and found near-complete pass-through of tariffs to US import prices. As a result, US customs revenue surged by approximately $200 billion in 2025, which is essentially a tax paid by Americans. The analysis also found that trade volumes collapsed instead of export prices declining in response to tariff shocks.