Minneapolis Fed researchers say the long-delayed pass-through of tariffs to consumer prices “has arrived,” adding up to 0.4 points to core inflation as the FOMC prepares to meet
MINNEAPOLIS, September 10, 2026
The tariff bill is finally landing on American receipts. After more than a year in which economists puzzled over why sweeping import duties were not showing up clearly in consumer prices, new research from the Federal Reserve Bank of Minneapolis finds that companies are now passing tariff costs through to customers in earnest, lifting core inflation by as much as 0.4 percentage points and complicating the Federal Reserve’s interest rate decision next week.
The analysis, published this week and reported by Minnesota Public Radio on Wednesday, estimates that core inflation, which excludes food and energy, ran at 3.3 percent year over year in July, higher than it would have been without tariffs. By the researchers’ calculation, tariffs accounted for up to 0.4 percentage points of that rate.
“Now with the benefit of four or five months of more data, we are seeing a clearer imprint from tariffs,” said Neil Mehrotra, an economist at the Minneapolis Fed who co-authored the analysis with economist Michael Waugh. Mehrotra made his remarks before the Federal Reserve’s blackout period, which precedes policy meetings.
The finding marks a reversal from the same team’s assessment in April, when the bank published research arguing that tariffs could not explain the rise in goods inflation observed at the time. The new work, pointedly titled to note that the “initially delayed” pass-through “has arrived,” suggests the lag between tariff imposition and consumer price effects, long theorized by trade economists, has now closed.
For the administration, which has argued for months that foreign producers and importers would absorb tariff costs, the research lands at an awkward moment: days before a Federal Open Market Committee meeting, two weeks before a summit with China aimed at reducing some tariffs, and one day after President Donald Trump promised Americans $5,000 checks funded partly by tariff revenue.
How the researchers measured the pass-through
To isolate the tariff effect, Mehrotra and Waugh compared how much prices would rise if businesses passed on all of their tariff costs against how much prices actually rose, using pre-pandemic inflation figures as a baseline for each product category.
The results show that pass-through is highly uneven across industries, a pattern that matters both for consumers deciding what to buy and for policymakers judging how much more tariff inflation remains in the pipeline.
At one end of the spectrum sits apparel. Women’s and girls’ clothing experienced excess inflation of 4.66 percent over the last year, strikingly close to the researchers’ predicted full pass-through effect of 4.77 percent. In that category, in other words, businesses appear to have handed nearly the entire tariff bill to shoppers.
At the other end are household supplies, which showed almost no inflation above their pre-pandemic average despite a predicted tariff effect of 1.63 percent. Somewhere between the checkout counter and the customs house, those costs are being absorbed.
Mehrotra offered several explanations for the divergence. “It could be that they don’t feel the ability to pass through those price increases, so they’re seeing lower profits,” he said. “It could be that they’re substituting to different suppliers to avoid the tariffs, or it could be that they’re finding ways to be more productive to offset the cost of higher tariffs.”
Each explanation carries different implications. Compressed margins suggest pass-through may still be coming as firms exhaust their capacity to absorb costs. Supplier substitution suggests trade diversion that could make the effect permanent but capped. Productivity offsets would be the most benign outcome, and, most economists suspect, the least common.
Why the delay happened
The lag between tariff imposition and consumer price effects, now visible in the rearview mirror, was one of the more contested puzzles in economics over the past eighteen months. When broad tariffs took effect in 2025 and measured inflation failed to respond proportionally, the administration cited the gap as evidence that foreign producers were eating the cost. Many forecasters who had predicted immediate price spikes were left explaining why the data did not cooperate.
The Minneapolis research suggests the skeptics and the forecasters were both partially right, and mostly disagreeing about timing. Several mechanisms delayed the pass-through. Importers front-ran the tariffs, building inventories of pre-tariff goods that took quarters to draw down. Contracts fixed prices for months at a time. Retailers facing uncertain demand chose to protect market share by absorbing costs into margins, gambling that the tariffs might be negotiated away or struck down before repricing became unavoidable. And the legal chaos surrounding the tariffs themselves, including the Supreme Court challenge that ultimately invalidated the IEEPA-based measures in February, gave firms a rational reason to wait before committing to permanent price increases.
By mid-2026, those buffers were exhausted. Pre-tariff inventory was gone, contracts had rolled over, and the administration had rebuilt the struck-down tariffs on firmer statutory ground, signaling that the duties were not going away. The July data captured the result: firms repricing, category by category, as the temporary shelter ran out.
The pattern echoes the research literature on the 2018 to 2020 tariff round, which found nearly complete pass-through of those duties to U.S. import prices, though with lags that varied by sector. The difference this time is scale. The current tariff structure covers a far larger share of imports at far higher average rates, which is why a pass-through effect measured in tenths of a percentage point of aggregate core inflation, rather than basis points, is now plausible.
The view from Main Street
The macro numbers have a texture that small business owners recognize. At Skirting the Rules, an alterations shop in Detroit Lakes, Minnesota, owner Nikki Caulfield told MPR News she sees the effect secondhand, on the price tags of the clothing customers bring in.
“We can see it clearest with prom dresses and the price tags that are on them when they come in here,” Caulfield said. “As far as I’m aware, pricing has gotten a little bit more expensive.”
Her own supply costs have stayed stable, she said, but the business faces rising costs on nearly every other front: electricity, water, and the personal expenses, gasoline and groceries, that a sole proprietor’s prices must ultimately cover. “It is not a business you get into if you want to be rich,” she said. “Sometimes I really wonder why I’m doing this.”
The anecdote captures something the aggregate data can obscure. Tariff effects reach consumers through two channels: directly, through the prices of imported goods like the dresses on Caulfield’s rack, and indirectly, as tariff-driven costs ripple through supply chains and business expenses across the economy. Both channels are now visibly active.
A second inflation engine: the AI boom
The Minneapolis Fed research also identified a second force pushing prices upward that has little to do with trade policy: the artificial intelligence investment boom.
Prices for video and information processing equipment, a category that includes memory chips, rose 12.2 percent from July 2025 to July 2026, the researchers found. That is a dramatic reversal from the 2015 to 2019 period, when prices in the category fell by 6.5 percent per year as a matter of routine technological deflation.
“That category is adding on its own about 0.4 percentage points to core inflation, and so it’s on the same order of magnitude as tariffs,” Mehrotra said.
The finding is significant for the inflation debate because it means the two most visible price pressures in the economy, tariffs and AI-driven hardware demand, are each contributing roughly 0.4 percentage points to core inflation. Together they account for a substantial share of the gap between current core inflation of 3.3 percent and the Federal Reserve’s 2 percent target.
It also complicates the policy diagnosis. Tariff-driven inflation is, in principle, a one-time price level adjustment that fades once tariffs stop rising. Demand-driven inflation from an investment boom can be more persistent, and it is the kind of pressure that interest rate policy is designed to lean against.
Reading the category data like a forecaster
For economists trying to project the next six months, the category-level detail in the Minneapolis analysis is more useful than the headline number. The apparel result, with observed excess inflation of 4.66 percent against a predicted full pass-through of 4.77 percent, establishes that in competitive, import-dominated consumer categories, firms will eventually pass on essentially everything. The household supplies result, near zero against a predicted 1.63 percent, establishes that absorption can persist for extended periods where firms fear demand destruction or have sourcing alternatives.
The forecasting question is which pattern the remaining categories follow as their buffers erode. If the apparel pattern generalizes, the tariff contribution to core inflation could rise beyond 0.4 percentage points before it fades, since many categories have passed through only a fraction of their predicted effect. If the household supplies pattern holds broadly, the aggregate effect may be near its peak, with the residual cost showing up in corporate earnings rather than consumer prices. The July data cannot yet distinguish between the two futures, which is one reason the researchers framed their finding as an arrival rather than a conclusion.
The Fed’s dilemma
The research arrives at a delicate moment for the central bank. The Federal Open Market Committee meets next week to set its benchmark interest rate, and reports like the Minneapolis Fed analysis feed directly into that deliberation.
The committee is already divided. In July, it held rates steady in a split vote, with Minneapolis Fed President Neel Kashkari dissenting in favor of a rate increase. Kashkari cited high inflation driven in part by tariffs and the Iran war, making the Minneapolis bank both the source of the sharpest inflation warnings and the home of the committee’s most hawkish vote.
Federal Reserve Chairman Kevin Warsh, who appeared at the Jackson Hole symposium in late August alongside Bank of Canada Governor Tiff Macklem and Bank of England Governor Andrew Bailey, must now weigh evidence that tariff pass-through is accelerating just as the committee decides whether current policy is restrictive enough.
The central question is whether tariff inflation should be treated as a level shift to look through or a persistent pressure to fight. The Minneapolis research sharpens that question without answering it: pass-through has arrived, but unevenly, and some of it may still be in the pipeline as firms that have been absorbing costs reach the limits of their margins.
The policy backdrop keeps shifting
Any assessment of where tariff inflation goes from here must contend with a trade policy landscape that refuses to sit still.
The Supreme Court struck down the administration’s tariffs imposed under the International Emergency Economic Powers Act in February, triggering more than $100 billion in refunds to importers. The administration responded by rebuilding its tariff program on other legal foundations, including a 12.5 percent Section 301 tariff on imports from China imposed in July under a forced labor investigation, with a possible additional 7.5 percent duty under a separate overcapacity investigation still pending.
Sector-specific measures have continued to arrive. A 100 percent Section 232 tariff on patented and branded pharmaceuticals takes full effect for most companies on September 29, with a reduced 20 percent rate for firms with Commerce-approved plans to onshore production. Semiconductor tariffs under Section 232 currently target high-end chips, and Commerce Secretary Howard Lutnick said this month that a second phase is being developed around the principle that companies that build in the United States pay nothing, while those that do not will pay to enter the American market.
Pulling in the other direction, Washington and Beijing are negotiating reciprocal tariff reductions on roughly $30 billion of non-strategic goods ahead of the September 24 Trump-Xi summit, and Canada’s new retaliatory tariffs on more than 700 American products, which took effect September 8, raise costs for U.S. exporters rather than importers.
The net effect is that the tariff structure feeding into consumer prices in 2027 may look quite different from the one that produced July’s numbers. Forecasting the inflation contribution of a moving target is, as one might expect, difficult, and it is one reason Fed officials have been reluctant to commit to a single interpretation.
What Washington and the campaign trail will do with the numbers
The political uses of the research began within a day of its publication. Democrats seized on the pass-through finding as confirmation that tariffs function as a consumption tax, and are expected to feature grocery-aisle and back-to-school price comparisons heavily in midterm messaging this fall. The administration’s defenders countered that 3.3 percent core inflation remains far below the pandemic-era peaks and that the tariff contribution, at 0.4 percentage points, is modest relative to the revenue and reshoring benefits the duties are designed to produce.
The timing sharpened both arguments. On Wednesday night, at the Republican midterm convention in Dallas, President Trump promised $5,000 “dividends” to Americans funded partly by tariff revenue if Republicans hold Congress. Critics immediately connected the two stories: if tariffs are raising consumer prices by measurable amounts, then a tariff-funded check amounts to partially refunding a tax that consumers did not know they were paying. Supporters of the dividend drew the opposite lesson, arguing that returning revenue to households is precisely the right response to tariff incidence.
The research also feeds the ongoing dispute over who should be believed about tariff economics. The Minneapolis Fed’s April paper, which found little tariff imprint, was widely circulated by tariff advocates at the time. The same institution’s September revision, finding the imprint has arrived, tests whether those advocates will update alongside the evidence. Mehrotra’s careful framing, noting that the earlier finding reflected genuinely delayed pass-through rather than error, offers both camps a dignified exit, though election-year incentives rarely reward nuance.
Economic impact analysis
The Minneapolis Fed findings quantify a cost that had been largely theoretical in the public debate. If tariffs are adding 0.4 percentage points to core inflation, the burden on a typical household is measured in hundreds of dollars per year of additional spending on the same basket of goods, concentrated in import-heavy categories like clothing, electronics, and home goods.
The distributional pattern matters as well. Apparel, where pass-through is nearly complete, occupies a larger share of budgets for lower-income households, meaning the tariff bite is regressive in its current form. Categories where firms are absorbing costs, like household supplies, shield consumers for now but pressure the margins of the companies involved, with knock-on effects for hiring and investment that surface more slowly.
For the administration, the numbers complicate a favored talking point. Tariff revenue, running at roughly $154.5 billion over the first ten months of the fiscal year, has been presented as money extracted from foreign producers. Research showing near-complete pass-through in major consumer categories supports the opposite interpretation: a meaningful share of that revenue is collected, in effect, from American shoppers at the register.
Implications for importers, retailers, and US businesses
For importers and retailers, the research offers a rough map of competitive dynamics. In categories where pass-through is already high, like women’s apparel, price increases have become industry norm, and firms that have hesitated to raise prices are likely to follow. In categories where pass-through is low, firms attempting to raise prices first may find customers defecting to competitors still absorbing costs, which argues for cost-side responses: supplier diversification, nearshoring, tariff engineering, and exclusion requests where available.
Businesses should also plan for the possibility that the pipeline is not empty. The April-to-September revision in the Minneapolis Fed’s own assessment shows how quickly measured pass-through can build. Firms that have been holding prices to protect market share are doing so out of retained margin, and margin is finite. If the FOMC concludes the same, the interest rate path could stay higher for longer, raising financing costs at the same time input costs remain elevated.
Exporters have a separate concern: retaliation. As trading partners match American duties, as Canada did this week, U.S. producers face higher barriers abroad even as their domestic input costs rise. The combination, more expensive inputs and harder-to-reach customers, is the classic squeeze of a trade war’s mature phase.
Trade compliance teams have a further, more technical takeaway. Because pass-through varies so widely by category, landed-cost modeling that applies average tariff rates across a product portfolio will misprice risk. The Minneapolis data argue for line-level analysis: matching each tariff heading to its observed category pass-through, then stress-testing prices against the possibility that absorption ends. Companies with exclusion requests pending, or with products near the boundaries of the pharmaceutical and semiconductor Section 232 programs taking shape this month, have the most to gain from that granularity.
The clearest takeaway from the week’s research is that the era of debating whether tariffs would reach consumers is over. They have. The debates that remain, over how much more is coming, who absorbs the rest, and what the central bank should do about it, begin next week in Washington, where the FOMC will meet with the Minneapolis Fed’s findings on the table.