An inflation gauge tracked by the Federal Reserve falls to its lowest point in 2 years

WASHINGTON (AP) — An inflation index that is closely monitored by the Federal Reserve tumbled last month to its lowest level since April 2021, pulled down by lower gas prices and slower-rising food costs.

At the same time, consumers barely increased their spending last month, boosting it just 0.1%, after a solid 0.6% gain in April.

The inflation index showed that prices rose 3.8% in May from 12 months earlier, down sharply from a 4.4% year-over-year surge in April. And from April to May, prices ticked up just 0.1%.

Still, last month's progress in easing overall inflation was tempered by an elevated reading of “core” prices, a category that excludes volatile food and energy costs. The increase underscored the Fed's belief that it will need to keep raising interest rates to conquer high inflation.

Core prices rose 4.6% in May from a year earlier, down slightly from the annual increase of 4.7% in April. It was the fifth straight month that the core figure was either 4.6% or 4.7% — a sign that the Fed’s streak of 10 rate hikes over the past 15 months hasn’t subdued all categories of prices. From April to May, core prices increased 0.3%, a pace that, if it lasts, would keep inflation well above the Fed’s 2% target.

Friday's report from the government suggested that consumer spending is slowing under pressure from high prices and interest rates, a trend that is also likely cooling inflation. As a result, many economists think growth in the current April-June quarter will slow from the 2% annual pace in the first three months of the year.

That cooldown could lead the Fed to decide to skip a rate hike when it meets in September, after a widely expected increase at its next meeting in late July.

“The stickiness of core inflation continues to be the proverbial bee in the bonnet of policymakers at the Fed,” said Shernette McLeod, an economist at TD, a bank. “Consumers continue to be a pillar of support for the U.S. economy. Nevertheless, they are coming under increasing pressures, with high prices, tightening credit and other indicators pointing to a slowdown on the way.”

Grocery prices edged up just 0.1% from April to May, providing some relief to consumers, though food costs are still 5.8% higher than they were a year ago. Gas prices, which sank 5.6% just from April to May, have plunged 22% over the past year.

Used cars soared 4.7% from April to May, though they're still 2.2% cheaper than they were a year ago. Economists expect used car prices to fall soon because measures of wholesale used car costs are declining.