Core inflation beat forecast in August; Fed rate hike odds rise to roughly 70% ahead of September 15-16 meeting

Core consumer prices climbed 0.3% month-over-month in August on a seasonally adjusted basis, topping consensus expectations of 0.2% and setting off a sharp repricing of interest-rate bets in the days before the Federal Open Market Committee meets on September 15-16.

The August inflation data matters because rates drive the cost of borrowing globally and anchor the discount rates investors use to value crypto and other assets with no cash flow. A hotter-than-expected print days before a major policy meeting can lock in near-term rate action, especially if other economic data has also surprised to the upside.

Headline inflation rose 0.4% month-over-month in August, matching the Dow Jones consensus forecast. On a year-over-year basis, headline inflation hit 3.4%, overshooting FactSet's median pre-release projection of 3.3%. Core inflation stood at 2.4% year-over-year, down from July's 2.5% reading and matching FactSet's forecast. Energy prices surged 2.1% for August, with gasoline alone jumping 3.9%, and accounted for more than a third of the total headline increase. Food prices rose just 0.1% month-over-month, while shelter costs continued their moderate upward trajectory.

Markets priced in roughly a 70% chance of a 25-basis-point Fed rate hike at the September 15-16 meeting, according to CME's FedWatch tool. The Fed's benchmark overnight rate currently stands at 3.50%-3.75%. The inflation report arrived alongside a stronger-than-expected August jobs report, both factors lifting expectations for a rate hike.

Prices climbed across communication, lodging away from home, airline fares, education and used cars and trucks. Medical care and motor vehicle insurance declined in August. On a 12-month basis, energy prices were up 16.3%, including a 27.4% increase in gasoline. Food prices increased 2.7% over the 12 months through August, while grocery prices held flat. Fruits and vegetables fell 0.4%, although eggs rose 2.9% and dairy products increased 0.3%. Food away from home rose 3.4% over the year.

The monthly overshoot of core CPI suggests the disinflationary trend the Fed has been banking on might be losing momentum at an inconvenient time. Shelter inflation, the stickiest component, lags in the Bureau of Labor Statistics methodology and may not yet reflect real-time rent cooling that rent-tracking firms have shown for months, meaning the reported core read could overstate underlying trend. Gasoline prices are notoriously volatile month-to-month, influenced by refinery maintenance schedules, geopolitical supply risks and seasonal demand patterns. August's 3.9% gasoline jump could easily reverse in September.

Bitcoin dropped to about $76,000 following the CPI release but quickly recovered, climbing back above $78,000 and gaining 1.5% in the 24 hours after the data crossed.

The Bottom Line: The Fed meets September 15-16 with rate-hike odds now at roughly 70%, according to CME's FedWatch tool. Whether gasoline and energy cool in September's CPI read will reset those odds for a December decision or later.