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Inflation Holds Steady in August as Core Prices Cool to a Four-Year Low

Elena Ortiz
Elena Ortiz •

Consumer prices rose 0.4% in August as core inflation cooled to 2.4% annually, its lowest level since March 2021, with energy costs driving the headline number.

Inflation Holds Steady in August as Core Prices Cool to a Four-Year Low

American consumer prices climbed 0.4 percent in August, keeping the annual inflation rate steady at 3.4 percent while the underlying trend cooled to its best reading in more than four years. The Consumer Price Index for All Urban Consumers rose 0.4 percent on a seasonally adjusted basis last month, following a 0.1 percent gain in July. Over the 12 months ending in August, the all-items index also held at 3.4 percent, unchanged from the prior month. Beneath that headline figure, core inflation -- which strips out volatile food and energy costs -- eased to 2.4 percent over the year, the slowest annual pace since March 2021.

The report describes an economy where the sharpest price pressure is concentrated in energy, while the broader cost of goods and services continues to settle. That split matters for households, for markets, and for a Federal Reserve still weighing how much restraint the economy needs.

Energy Drives the Headline Number

Gasoline prices did the heavy lifting in August, rising 3.9 percent and accounting for more than one third of the monthly increase in the all-items index. The broader energy index advanced 2.1 percent for the month and stood 16.3 percent higher than a year earlier.

Fuel oil posted the most dramatic annual move, surging 52 percent over the 12 months ending in August. Those gains reflect the global crude market more than domestic policy, and they are the main reason the headline rate has stayed stubbornly above the central bank's 2 percent target.

Not every energy category moved in the same direction. Electricity slipped 0.2 percent in August and utility piped gas fell 1.1 percent, offering modest relief on household utility bills even as the pump squeezed family budgets. Over the year, electricity was up 3.8 percent and natural gas service up 4.4 percent.

Energy has been the wild card all year. After a 5.7 percent drop in June and a further 1.5 percent decline in July, the index reversed course in August. That volatility is exactly why economists lean on the core measure when judging the inflation trend -- it smooths out the swings that can distort the headline from one month to the next.

Core Inflation Cools to a Four-Year Low

Strip out food and energy, and the inflation picture improves markedly. Core prices rose 0.3 percent in August after a 0.2 percent increase in July. The annual core rate slipped to 2.4 percent from 2.5 percent, marking the mildest reading since March 2021.

Shelter, the single largest component of the index and historically the most stubborn, rose 0.3 percent for the month while its annual pace eased to 3.0 percent from 3.2 percent. Services excluding energy climbed 3.0 percent over the year, down from the peaks that defined the post-pandemic surge.

Goods prices were even more cooperative. Used cars and trucks fell 2.3 percent over the year despite a 0.4 percent monthly bump, and new vehicles rose just 0.6 percent annually. Medical care commodities dropped 2.7 percent over 12 months, and motor vehicle insurance declined in August. Airline fares and lodging away from home increased for the month, a sign of still-solid demand for travel.

Grocery Prices Level Off

Food inflation continued to moderate. The overall food index rose just 0.1 percent in August, matching July's increase, and food at home was unchanged for the month. Over the year, grocery prices rose 2.2 percent -- a far cry from the double-digit spikes that rattled shoppers in 2022.

A few staples told the story of a market finding its footing. Egg prices rose 2.9 percent in August, while lettuce fell another 6.2 percent after a 16.4 percent drop in July. The fruits and vegetables index declined 0.4 percent for the month, and dairy products were down 0.3 percent over the year. Meats, poultry, fish, and eggs were up just 1.1 percent annually.

Food away from home remained the sticky spot, rising 3.4 percent over 12 months as restaurants continued to pass through labor and input costs. Full-service meals rose 3.5 percent and limited-service meals 3.2 percent for the year.

What Comes Next for Households and Policymakers

The report hands the Federal Reserve a mixed but encouraging set of signals. Headline inflation is being held aloft almost entirely by energy, a category the central bank cannot control and one that has historically reversed as quickly as it spiked. Core inflation, the gauge that better reflects underlying demand, is now at its lowest level in more than four years.

For American families, the practical effect is a slower grind on the cost of living than at any point since early 2021. Grocery bills have stabilized, used-car prices are falling, and shelter costs are finally bending lower, even as renters and homeowners still feel the cumulative weight of the past several years.

The administration has pointed to energy dominance and deregulation as central to keeping costs down, and August's data offers evidence on both sides of that ledger: domestic fuel production is strong, yet global crude markets still dictate the price at the pump. Expect the White House to emphasize the cooling core rate while critics focus on the elevated headline number.

Investors and economists will now turn to the next inflation reading and the Fed's accompanying commentary for clues on the path of interest rates. With core prices trending toward target and energy doing the damage to the headline, the debate inside the central bank is likely to sharpen over the coming weeks. For now, the underlying inflation story is one of gradual, if uneven, improvement.