US Inflation Surges, Pushing Federal Reserve Towards December Rate Hike Amidst Geopolitical Energy Concerns

A recent inflation report, exceeding expectations, has intensified the pressure on the Federal Reserve to implement an interest rate increase during its upcoming December meeting. Adding to the complexity, a prominent policymaker indicated that the ongoing conflict in Iran is likely to exert a sustained influence on energy prices.

Official US government data released on Tuesday revealed that the Consumer Price Index (CPI) inflation rate climbed at a monthly pace of 0.4 per cent in October. While this represents a deceleration from September's 0.6 per cent pace, it still surpassed market estimates. Core inflation, which omits the volatile food and energy components, also saw a monthly increase of 0.3 per cent last month, again exceeding forecasts. The Bureau of Labour Statistics did not provide a year-on-year measure due to the October 2025 government shutdown.

Traders have largely priced in the likelihood of the Fed raising rates at its final policy meeting of the year. Data from the CME Group indicates that approximately 90 per cent of traders anticipate a 25 basis point rate hike, with about 10 per cent expecting a more substantial 50 basis point increase.

This market sentiment was significantly influenced by Fed governor Christopher Waller, a key member of the central bank's rate-setting committee. Prior to the report's release, Mr. Waller stated that he would support a 50 basis point rate increase in December if October inflation remained elevated. Such a move would mark the Fed's largest rate hike since 2022.

“Hiking only 25 basis points would put our credibility at risk; a risk I am not eager to take,” Mr. Waller remarked at an event in the UK. Karl Schamotta, chief market strategist at Korpay, noted in a written statement, “The last consumer inflation update before the Fed’s early December meeting took on added significance this morning when Governor Christopher Waller indicated he would vote for a rate hike.”

Dallas Fed president Lorie Logan, another voting member of the Federal Open Market Committee (FOMC), further bolstered expectations for a December rate increase. Speaking to an audience in Houston, she expressed her support for raising rates at least two more times. “It may be possible to move more rapidly this winter than the FOMC has moved so far this fall,” Ms. Logan stated.

The US central bank opted to keep interest rates unchanged in October, following a quarter percentage point increase in September. At that time, Fed chairman Kevin Warsh affirmed the central bank's commitment to curbing inflation, which has persisted above the Fed's 2 per cent target for over five years.

Last month's price increases were primarily driven by escalating energy and food costs, which remain high due to the Iran war. The Bureau of Labour Statistics reported that four out of the six major grocery store food group indexes saw increases last month, while one index decreased. The energy index moderated significantly, falling from a 5.2 per cent increase in September to 0.7 per cent in October.

“Grocery-store inflation accelerated notably after a string of quiescent readings, underscoring the lags between energy price shocks and non-energy consumer prices,” wrote Bernard Yaros, deputy US chief economist at Oxford Economics. While US central bankers typically disregard temporary energy price shocks, the nine-month conflict in the Middle East has, for the moment, altered this perspective.

“And there are reasons to also expect elevated energy prices to persist,” Mr. Waller added. “First, even as there is increased tanker traffic through the Strait of Hormuz, that traffic is moving at great expense.” Mr. Waller explained that maritime insurance costs for passage through the waterway and the practice of ship-to-ship oil transfers to mitigate the risk of Iranian attacks are reportedly increasing oil prices by $20 to $30 per barrel.

Mr. Waller, who was a finalist for the Fed chairman position last year, also pointed to limited refining capacity and other constraints affecting diesel oil production. “As a consequence, elevated prices for diesel in the United States are not expected to moderate as readily as crude oil prices would in a more peaceful Middle East,” he concluded.

Following the CPI inflation report, the yield on the 10-year Treasury, a key benchmark for borrowing costs, rose back to 5 per cent. The yield on the 30-year Treasury increased by over 10 basis points to 5.36 per cent. The yield on the two-year Treasury, which is highly sensitive to short-term Fed rate adjustments, climbed 19 basis points to 4.736 per cent.

Major Wall Street indexes were trading lower, continuing a trend of volatility that began after the Democratic Party's significant victory in the midterm elections last week. The US dollar strengthened against a basket of currencies, while prices for spot gold and silver declined.

Current projections from the Fed indicate an expectation for rates to remain stable at 4.1 per cent in 2027 before a gradual decrease in 2028. The Fed's preferred inflation metric is forecast to conclude the year at 3.7 per cent, moderating to 2.3 per cent in 2027 and 2.1 per cent in 2028. Central bankers are scheduled to update these forecasts next month.