April CPI figures confirm the energy shock is bleeding into underlying prices; markets are now pricing a 34% chance of a rate hike by year end.
Even ahead of the Iran war, the outlook for US inflation was elevated. Fiscal stimulus, aggressive AI-related capital expenditures, and the potential for some limited monetary easing all lifted the outlook for growth, and inflation. Ahead of the Iran war, we had forecasted a 3.1% rate of headline inflation, and a 3% rate of core inflation, both of which were already far above the Fed’s 2% target. Today’s CPI report, which includes consumer price information for April, clearly points to a US inflation environment that is likely to finish well above our previous forecast.

Source: BLS; data is seasonally adjusted
Headline CPI-based inflation (seasonally adjusted), which includes volatile food and energy, understandably surged in April, finishing at a twelve-month pace of 3.8%, lifted by a one-month pace of inflation that surged to 10.9% annualized in March, and 8% annualized in April. Energy prices are the main culprit with the twelve-month pace of inflation across the category at 17.5% in April, up from just 0.4% in February, ahead of the Iran war.
The question is the extent to which headline inflation feeds through to core inflation, which excludes volatile food and energy. Core inflation is often what the Fed will utilize when considering monetary policy. It is hard to ascertain the extent of pass through for now, but core inflation clearly accelerated in April, with both the twelve-month (2.7%, +14bp against March) and the one-month (4.6% annualized, +223bp against March) rate of inflation rising against the March report. This is a bad sign. A situation where core inflation is already trending higher before the effects of elevated headline inflation pass through is highly problematic.
