Tariff Pass-Through
The fraction of a tariff increase that eventually reaches consumer prices — rarely 100%, and highly variable across goods, markets, and time periods.
In plain words
When a government imposes a tariff on imported goods, it creates a tax at the border. Tariff pass-through measures how much of that tax ultimately falls on domestic consumers in the form of higher prices. A pass-through of 100% means consumers pay the full cost. A pass-through of 50% means foreign exporters absorb half (by cutting their prices) and domestic consumers pay the other half.
Pass-through is almost never 100%. In competitive markets, foreign exporters may reduce their prices to remain competitive, partially absorbing the tariff in their own profit margins. Domestic retailers may also absorb part of the increase to protect market share. The net effect on consumer CPI depends on how the cost is shared across the full supply chain — from foreign producer, to importer, to wholesaler, to retailer, to final consumer.
Understanding tariff pass-through is essential for evaluating the inflation impact of trade policy. A 25% tariff on imported goods sounds large, but if only 50% passes through to consumers, and if those goods represent 2% of the CPI basket, the actual CPI impact is modest: 25% × 50% × 2% = 0.25 percentage points. This arithmetic explains why even large tariff programs have historically had modest measured impacts on overall consumer inflation. See the PPI explainer for how tariff effects show up in the pipeline data.
Two-step pass-through: border and retail
Border pass-through
How much of the tariff appears in import prices paid by domestic importers. Research on US-China tariffs found near-complete border pass-through: US importers paid close to the full tariff amount — Chinese exporters did not significantly lower their export prices to absorb it. This varies by market: in oligopolistic markets, foreign exporters with pricing power are more likely to hold prices and let importers bear the cost.
Retail pass-through
How much of the higher import cost reaches the consumer via retail prices. This is where the most absorption tends to occur. Large retailers (like major supermarkets or big-box stores) often use market power to force suppliers to absorb cost increases rather than raising shelf prices. During 2018–19, US retailers absorbed a meaningful share of tariff costs in margins — particularly for discretionary goods where demand is more price-sensitive. For necessities, pass-through to retail is faster and more complete.
What determines the pass-through rate
Availability of domestic substitutes: If domestic producers can quickly fill the gap, competition constrains the price rise. If no domestic alternative exists (rare earth metals, specific semiconductors), the full tariff passes through.
Market power of importers and retailers: Large retailers with bargaining power force foreign suppliers to absorb tariffs by reducing export prices. Smaller retailers with less leverage pass costs through more directly.
Tariff duration: A temporary tariff may be absorbed through inventory drawdowns. A permanent tariff forces supply-chain restructuring — pass-through tends to increase over time as pre-tariff inventory runs out and companies re-price.
Demand elasticity: For inelastic goods (necessities), retailers pass on cost increases without losing sales. For elastic goods (discretionary items), they cannot — margins compress instead.
Exchange rate response: If the tariffed country depreciates its currency, the tariff may be partially offset at the border. China partially did this in 2019, limiting the effective pass-through of US tariffs to US consumers. See our exchange rate and inflation guide for how the currency channel interacts with tariff effects.
How to measure tariff pass-through
Difference-in-differences: Compare price changes in tariffed goods categories vs non-tariffed goods categories before and after tariff implementation. This works when both groups face similar demand conditions. A landmark NBER study on US-China tariffs used this approach and found near-full pass-through to US import prices and significant (but incomplete) pass-through to consumer prices.
Import price index tracking: The BLS Import Price Index provides monthly data at the HS commodity code level. By tracking import prices for tariffed HS codes vs non-tariffed codes, analysts estimate the border pass-through rate. This is the cleanest method for the first step of the transmission.
CPI sub-component tracking: BLS publishes CPI for over 200 item categories. Categories with high import content (household furnishings, apparel, audio equipment) can be tracked against tariff implementation dates to estimate retail pass-through. The BLS detailed CPI tables enable this analysis. The Producer Price Index data provides an intermediate step — showing tariff effects appearing at the producer level before they reach consumer CPI. See the October 2026 PPI release for a current example.
Frequently asked questions
Did US tariffs on China actually raise consumer prices?
Yes, but not by the full tariff amount. Research published in the American Economic Review and NBER working papers found that the 2018–19 US tariffs on Chinese goods (25% on ~$300bn of goods) were almost entirely absorbed by US importers and consumers — not by Chinese exporters. Consumer prices in tariffed categories rose by 0.3–0.4 percentage points cumulatively, with the rest absorbed in retailer and importer margins. The aggregate impact on overall CPI was modest (~0.1–0.15 pp) because the affected categories are a small share of total consumer spending. The 2025–26 tariff expansion was broader, affecting more consumer goods categories, with estimated aggregate CPI impact of 0.2–0.4 pp — still modest in absolute terms but meaningful for affected goods categories.
Is tariff pass-through the same as exchange rate pass-through?
They are related but distinct. Exchange rate pass-through describes how a currency depreciation raises import prices — a continuous market-driven process. Tariff pass-through describes how a deliberate policy intervention (a tax on imports) raises domestic prices — a discrete, policy-driven event. Both can be measured via import price indices, and both depend on similar factors (market structure, substitutability, demand elasticity). The key difference is that exchange rate changes affect all imports broadly, while tariffs are typically targeted at specific goods from specific countries. Our guide on exchange rates and inflation covers the exchange rate mechanism in detail.
How quickly do tariff increases show up in CPI?
Faster than exchange rate pass-through — typically 1–3 months from implementation to visible CPI impact in targeted categories. The speed depends on inventory cycles: if retailers have built up stock at pre-tariff prices, the effect is delayed until that inventory is sold. Research on US-China tariffs found visible CPI effects within 3–6 months of implementation for most consumer goods categories. Industries with longer supply chains (e.g., automotive, electronics) showed effects 6–12 months after implementation because components and sub-assemblies are produced with longer lead times.