October CPI Rises 0.4%, Matching Waller’s Threshold for Considering a Larger December Hike
October consumer prices rose 0.4% and core CPI increased 0.3%. Earlier Tuesday, Fed Governor Christopher Waller said a core reading around 0.3% or higher would warrant considering a 50-basis-point December move.
By Scott Baker · 4 min read
U.S. consumer prices rose 0.4% in October, while prices excluding food and energy increased 0.3%, the Bureau of Labor Statistics reported Tuesday morning. The figures arrived hours after Federal Reserve Governor Christopher Waller said a core reading around 0.3% or higher would warrant considering a larger interest-rate increase in December.
The sequence matters. Waller delivered his remarks before the 8:30 a.m. Eastern release and was not reacting to the actual report. His comments describe one policymaker's conditional view, not a decision by the Federal Open Market Committee.
Inflation cooled from September but stayed broad
The BLS Consumer Price Index report showed the all-items index rising 0.4% on a seasonally adjusted basis in October after a 0.6% increase in September. Core CPI rose 0.3%, matching its monthly pace in August and September.
Shelter costs increased 0.3% and accounted for more than 30% of the overall monthly increase. Within shelter, owners' equivalent rent rose 0.3% and rent of primary residence increased 0.2%. Food prices climbed 0.5%. Energy rose 0.7%, a sharp slowdown from September's 5.2% gain but still another monthly increase.
An unusual data limitation prevents a normal year-over-year comparison. BLS said it did not collect October 2025 survey data during a lapse in appropriations, so it cannot publish 12-month changes for most October 2026 CPI series. That means the monthly figures are the cleanest official comparison in this release.
Waller had already defined his December test
In a speech delivered earlier Tuesday, Waller said he supported holding the federal funds rate steady at the October meeting because earlier Fed communication had already tightened financial conditions. He also said he was leaning toward a 25-basis-point increase in December even if monthly inflation improved.
Waller went further on a stronger reading. If October core CPI came in around 0.3% or higher, he said a 50-basis-point increase should be considered. The actual core reading was 0.3%, placing the report at the threshold he described. That does not establish how Waller will vote after reviewing the full data, and it does not predict the committee's decision.
Why mortgage markets care
The Fed does not set mortgage rates directly. Mortgage pricing is more closely connected to Treasury yields, mortgage-backed securities and investor expectations for inflation and future short-term rates. A report that keeps inflation pressure elevated can make investors demand higher yields, but daily mortgage pricing can also move for other reasons.
For borrowers and loan officers, the practical point is not to treat a possible December Fed increase as a guaranteed one-for-one change in mortgage rates. The October CPI report strengthens the case for continued policy restraint, while the next inflation releases and incoming labor data can still change expectations before the December 8-9 meeting.