Two senior Federal Reserve officials have signaled a readiness to accelerate interest rate increases, with Governor Christopher Waller openly discussing the possibility of a 50-basis-point hike in December if inflation data continues to disappoint. The remarks represent the most hawkish forward guidance under Fed Chair Paul Warsh's leadership and reflect growing concern about the central bank's credibility as inflation remains stubbornly above target.

Speaking at the Bank of England Watchers Conference in London on Monday, Waller warned that elevated inflation had put the Federal Reserve's credibility at stake and that a half-percentage-point rate increase may be necessary to restore market confidence. Dallas Fed President Lorie Logan echoed the sentiment, backing at least two additional quarter-point rate increases in the coming months.

Credibility on the Line

Waller's remarks marked a significant shift in tone from the Federal Open Market Committee's recent decision to hold rates steady at its last meeting. The governor emphasized that while the precise timing of rate hikes doesn't matter, ensuring that promised hikes are carried out in a reasonable timeframe is critical to maintaining policy effectiveness.

"If the hikes are not carried out, markets will reduce expectations of rate hikes and rates will immediately fall, which would loosen monetary policy in an undesirable way," Waller said. He noted that he is "leaning toward" supporting a 25-basis-point increase at the December FOMC meeting but cautioned that if October's consumer price index shows core inflation around 0.3 percent or higher, "a stronger policy move may be needed."

AI and Energy Concerns

Waller highlighted two factors contributing to persistent inflation pressure: the artificial intelligence infrastructure buildout and elevated energy prices. Federal Reserve staff research using textual analysis of Institute for Supply Management purchasing manager surveys found that indexes for high-tech products rose sharply before an escalation in goods prices that appeared in early 2026 inflation data.

The most recent ISM data for October points to the possibility of more price increases ahead, Waller noted. Adding to the concern, new Fed research suggests that energy price shocks may be passing through to core inflation in a more sustained manner than in past cycles.

"Central bankers have tended to look through energy price shocks and expect that their effects on inflation will soon fade, but this new work cautions against taking too much comfort in this view," Waller said. "Their analysis suggests that, especially if oil prices were to remain elevated, these pressures could be larger than previously thought and persist well into 2027."

Market Implications

The explicit forward guidance from Waller and Logan has already begun to shift market expectations for the December FOMC meeting. October's CPI and PPI reports, due later this month, will be critical in determining whether the Fed opts for a 25- or 50-basis-point move.

Waller concluded with a stark warning: "Hiking only 25 basis points would put our credibility at risk, a risk I am not eager to take." The comments signal that the Federal Reserve may be preparing to prioritize inflation-fighting over concerns about economic growth, marking a potential turning point in monetary policy as 2026 draws to a close.