US inflation hit 3.7% in September — hotter than forecast — as gasoline jumped 9.1% in a month. Ahead of the midterms, the last economic test is failing the party in power.
Published 14 October 2026 · 18:00 GMT
At a pump outside Detroit, regular gasoline now costs $4.66 a gallon — $1.74 more than a year ago. On Wednesday, Washington put a number on the squeeze: consumer prices rose 3.7% in the year to September, hotter than economists expected, and the last major inflation data before the November 3 midterms.
The Labor Department's Bureau of Labor Statistics said Wednesday that the consumer price index rose 0.6% in September from August — the biggest monthly gain in five months — and 3.7% from a year earlier, up from 3.4% in August. Economists polled by Reuters had expected a 0.6% monthly gain and a 3.6% annual rate; the Dow Jones consensus also called for 3.6%. Both forecasts were beaten — on the hot side.
Strip out food and energy and the picture was no better. Core CPI rose 0.3% on the month — the second straight 0.3% — and 2.6% on the year, up from 2.4% in August and above the 2.5% consensus. Core is the number economists watch most closely, and it told them the heat is not just a fuel story.
Inflation is not a forecast anymore — it is the bill, and it arrived three weeks before the vote.
Gasoline did the heaviest lifting. The gasoline index jumped 9.1% in a single month — the biggest mover in the report — and accounted for more than half of the all-items increase. Gasoline now costs 34.2% more than a year ago. The broader energy index climbed 5.2% on the month and 20.4% on the year. Brent crude, the global benchmark, averaged $102.02 a barrel in September, up nearly $14 from August, according to OPEC's monthly report.
But the price pressure was not bottled at the pump. Shelter rose 0.4% on the month and 3.2% on the year; airline fares climbed 1.2% on the month and 22.4% over twelve months; hotel rooms jumped 2% in September; and toys, new and used cars, sporting goods, clothing and shoes all rose briskly. “The report was worse than expected,” Bill Adams, chief U.S. economist at Fifth Third Bank, wrote in a note. “Price increases were widespread.”
Two forces beyond fuel are seeping into prices. Reuters noted that fast-rising software and toy prices point to the impact of higher tariffs under Trump's trade policy and AI-driven demand for chips and electronics, as surging data-center investment pushes up the cost of consumer hardware. Food was the rare relief: grocery prices slipped 0.1% and are up just 1.8% on the year, with ground beef down 0.8% in September — though beef still costs 5.4% more than a year ago. And the Iran war, under way since late February, keeps squeezing global energy supply.
For the Federal Reserve, the report narrowed the room to wait. Futures markets now price about a 49% chance the central bank keeps its policy rate in the 3.75%–4.00% range at its meeting in two weeks — up from 19% before the release — with some traders putting the odds of an October 28 hike near one in two, up from roughly one in five. The Fed lifted rates to 3.75%–4.00% last month, and New York Fed President John Williams has said one more increase this year may be needed, with no more in 2027.
Bond markets moved first. The two-year Treasury yield, which tracks rate expectations, jumped 14 basis points to 4.93%; the benchmark 10-year rose 10 basis points to 5.314%, flirting with a 24-year high. “This is the last thing global bond markets needed,” economist Robin Brooks wrote, warning the sell-off was “catching on fire again.” The dollar index climbed to 102.75, an 18-month high, while gold fell 1.6% to $4,088 an ounce. Mortgages followed: the 30-year fixed rate rose to 7.5% last week, the highest in nearly three years. One caveat: the Fed's actual target is not the CPI but a different measure, the PCE price index; its core reading was 3.0% in August.
Inflation is a national number with local pain. The Labor Department also said Wednesday that average weekly paychecks, adjusted for inflation, shrank from a year earlier — the first such fall since May. It was the sixth straight month of prices outrunning wages, and the bill lands hardest on people who drive for a living, haul freight, or fly for work.
Diesel is the sharpest edge. Retail diesel stood near $6.28 to $6.50 a gallon in early October, up more than 70% from a year ago by some measures, and record prices are already pushing freight costs into everything shipped. Ralph Newhouse, chief executive of the appliance maker Chefman, said rising diesel prices could force him to raise prices in the coming months. For older Americans there was a small offset: Social Security recipients will get a 3.6% cost-of-living increase based on these figures.
Younger households feel it at the airport and the lease renewal. Airline fares up 22.4% on the year and hotel rooms up 4.4% make travel a luxury good; shelter's 3.2% annual rise, driven by rents and owners' equivalent rent, keeps housing the slow-burning part of inflation. Consumer sentiment has sunk to record lows — the affordability crunch now defines how Americans experience the economy. Read our report on the collapse in consumer sentiment.
Wednesday's release is the last major inflation report before the midterm elections on November 3, three weeks away. It could hardly have landed worse for the party in power. An AP-NORC poll found just 17% of American adults approve of President Trump's handling of the cost of living and only 26% approve of his handling of the economy — a new low. A Reuters/Ipsos poll of 4,506 adults found 78% believe his policies, including tariffs and the Middle East conflict, bear at least some responsibility for rising prices, and a majority of Republicans agree living costs are outpacing wages. The tariff backlash is now a campaign issue in its own right.
The White House has been scrambling for relief. Last week Trump announced a deal with Russian President Vladimir Putin for Moscow to release up to 4.8 million tons of diesel — 300,000 tons immediately, 500,000 in November, a million in December and a conditional 3 million after that — with the Treasury issuing a temporary license to let Russian fuel back into global markets. Goldman Sachs estimates the deal would shave just $1 to $2 a barrel off global diesel prices; Dow Jones Energy's Denton Cinquegrana called it “a drop in the bucket,” noting Russia's refinery outages have cut its own output. The reversal — weeks after Trump signed a sweeping Russia sanctions bill — drew criticism from Ukrainian President Volodymyr Zelensky, from Republican senators including John Kennedy and Michigan candidate Mike Rogers, and from a bipartisan Senate group that said the deal “runs counter” to U.S. law. For scale, the G7 agreed on October 2 to release a combined 100 million barrels of crude and diesel, and Europe alone is expected to put out some 50 million barrels — more than eight times the Russian volume.
The backdrop keeps getting tougher. September hiring came in weak — see the September jobs miss — and the Fed's Beige Book now shows price pressures intensifying even as hiring cools. Whatever voters thought about the economy this spring, the autumn ledger reads: inflation at 3.7%, paychecks shrinking, borrowing costs rising. The full picture for the United States is tracked in our factbook.
What to watch: the Fed's October 27–28 meeting, the delayed September real-earnings report, and whether diesel prices — and the tariff costs now filtering through — push October's numbers higher still.
In Washington, the report landed as a political event first and an economic one second. Three weeks before the midterms, a 3.7% print with core at 2.6% arms every challenger with the simplest attack in politics: your paycheck buys less than a year ago. Republicans now own both the number and the remedies that have not worked — and the AP-NORC approval figures suggest voters have noticed.
The policy argument splits along familiar lines. The White House blames Ukraine's strikes on Russian refineries and the war's disruption for fuel costs; market analysts point to the Iran war's instability in the Middle East and to tariffs filtering into goods prices. The Federal Reserve, required by Congress to pursue stable prices, faces its own credibility test: with core PCE at 3.0%, well above the 2% target, pausing while inflation accelerates risks looking like surrender.
From Moscow, the story reads as leverage. A temporary U.S. sanctions waiver letting Russian diesel back into global markets — weeks after Washington passed a sweeping sanctions bill — hands the Kremlin revenue and a propaganda win at once. Ukrainian President Zelensky's warning was blunt: easing sanctions without lasting de-escalation “plays into Russia's hands.”
But the leverage may be thinner than it looks. Russia's refinery outages have cut its own output by millions of barrels a day, raising doubts it can deliver even the promised 4.8 million tons; Goldman Sachs puts the price effect at a mere $1 to $2 a barrel. Meanwhile the G7's 100-million-barrel release and Europe's expected 50 million barrels would dwarf Moscow's contribution — a reminder that Washington's deal buys optics more than oil.
For the rest of the world, America's 3.7% is imported weather. A dollar index at an 18-month high makes dollar-denominated debt and fuel more expensive across Africa, Latin America and Asia; Brent at $102 a barrel tightens the same squeeze for every oil-importing economy. Record diesel prices in the United States foreshadow higher freight and food costs everywhere American goods travel.
Emerging-market finance chiefs — gathered this week in Bangkok, as Reuters noted — are watching the Fed most of all. Another U.S. rate hike would pull capital back toward American yields and weaken their currencies further, forcing their own central banks to choose between defending the exchange rate and protecting growth. When Washington sneezes over gasoline, the Global South catches the fuel bill.
The consumer price index rose 0.6% in September from August — the biggest monthly increase in five months — and 3.7% from a year earlier, up from 3.4% in August. Core CPI, which excludes food and energy, rose 0.3% on the month and 2.6% on the year. Both the headline and core readings came in hotter than the 3.6% and 2.5% that economists had forecast.
Tight global supply and the lingering Iran war pushed crude higher, with Brent averaging about $102 a barrel in September. Refining strain and strong fuel demand amplified the move at the pump. Gasoline accounted for more than half of September's entire CPI increase, and the broader energy index climbed 5.2% in one month, with fuel oil up 15.3%.
The odds rose sharply after the report. Futures markets now price roughly a coin-flip chance of holding rates at 3.75%–4.00%, up from 19% before the release, and traders put an October 28 hike near one in two. The Fed raised rates last month, and New York Fed President John Williams says one more increase this year may be needed. Nothing is guaranteed.
Probably not by much. Goldman Sachs estimates Moscow's promised releases would cut global diesel prices by just $1 to $2 a barrel, and analysts note the volumes equal little more than a day of global demand. Russia's own refinery outages limit what it can ship. Europe's expected 50-million-barrel release would matter far more for pump prices.
It is the last major inflation data before voting, and it hands challengers a fresh number: 3.7%. Only 17% of Americans approve of Trump's handling of the cost of living, and 78% blame his policies for rising prices, according to recent polls. With affordability the top voter concern, gasoline and grocery receipts are campaigning harder than any candidate.
