Summary: US CPI flat in May, less than expected; annual inflation rate slows from 3.4% to 3.3%; “core” rate up 0.2%, up 3.4% over year; ANZ: disinflation process resuming; Treasury yields fall noticeably; rate-cut expectations firm; energy prices main driver.
The annual rate of US inflation as measured by changes in the consumer price index (CPI) halved from nearly 3% in the period from July 2018 to February 2019. It then fluctuated in a range from 1.5% to 2.0% through 2019 before rising above 2.0% in the final months of that year. Substantially lower rates were reported from March 2020 to May 2020 and they remained below 2% until March 2021. They then rose significantly before declining from mid-2022 to mid-2023.
The latest US CPI figures released by the Bureau of Labor Statistics indicated seasonally-adjusted consumer prices were flat on average in May. The result was less than the 0.1% which had been generally expected as well as April’s 0.3% rise after revisions. On a 12-month basis, the inflation rate slowed from 3.4% to 3.3%.
“Headline” inflation is known to be volatile and so references are often made to “core” inflation for analytical purposes. The core prices index, the index which excludes the more variable food and energy components, increased by 0.2% on a seasonally-adjusted basis over the month, less than the 0.3% which had been expected. The annual growth rate slowed from April’s rate of 3.6% to 3.4%.
“Core CPI inflation rose 3.4% year-on-year, down from 3.9% in January and 5.3% in May 2023, confirming the disinflation process is resuming, having stalled in Q1,” said ANZ senior economist Catherine Birch. “Given that super-core inflation has a much larger weighting in the PCE deflator, the data bode well for a low May core PCE deflator print.”
The figures came out on the same day as the FOMC’s decision to leave rates unchanged and US Treasury bond yields fell noticeably. By the close of business, the 2-year Treasury yield had shed 9bps to 4.75%, the 10-year yield had lost 8bps to 4.32% while the 30-year yield finished 6bps lower at 4.48%.
In terms of US Fed policy, expectations of a lower federal funds rate in the next 12 months firmed, with at least three 25bp cuts currently factored in. At the close of business, contracts implied the effective federal funds rate would average 5.31% in August, 2bps less than the current spot rate, 5.25% in September and 5.09% in November. June 2025 contracts implied 4.405%, 93bps less than the current rate.
The largest influence on headline results is often the change in fuel prices. Prices of “Energy commodities”, the segment which contains vehicle fuels, decreased by 3.5% and contributed -0.14 percentage points to the total. Prices of non-energy services, the segment which includes actual and implied rents, again had a relatively large effect on the total, adding 0.12 percentage points after increasing by 0.2% on average.