Start with the charge
The WTO describes tariffs as customs duties on merchandise imports. They change the cost of bringing covered goods into a market. WTO: Tariffs In the US, the importer pays the tariff to the government; that does not settle who ultimately absorbs the economic cost. Associated Press: How tariffs work
Follow a hypothetical product
Suppose a product has a customs value of $100 and faces a simple 10% tariff. The duty is $10. If it later sells for $180, the duty is not automatically $18: the retail price and customs value are different bases. This illustration assumes a straightforward percentage tariff and omits exemptions, fees and special valuation rules.
The burden can move
An importer might accept a smaller margin, ask its supplier for a discount, raise its customer’s price or seek another source. A combination is possible. Which response works depends on alternatives, contracts and competition. The political description of the policy does not determine the result for every product.
Why changing suppliers is not instant
Our analysis focuses on implementation. An apparently cheaper replacement still needs to meet quality requirements and delivery dates. A small firm may also have money tied up in existing stock. For consumers, the effect can appear through price, availability or a different product assortment, rather than as a separately itemised tariff charge.
What to watch next
Before drawing a conclusion from an announcement, check the product classification, origin, effective date and any published exclusions. Then compare actual import costs and retail prices over time. A tariff rate is a legal parameter; its final burden is an empirical question. This article explains the mechanism and does not supply a current tariff schedule for an individual shipment.
Sources & methodology
Sources checked on 25 September 2026. Company and institutional statements are attributed; hypothetical examples are labelled. Interpretations are identified in the text. No original interviews or hands-on product tests are claimed.