The Bureau of Labor Statistics reported Tuesday that the all-items Consumer Price Index rose 0.6% in April after a 0.9% jump in March, putting the twelve-month rate at 3.8% — the hottest annual print since May 2023 [1]. Core CPI rose 0.4% for the month and 2.8% over the year. Energy accounted for more than forty percent of the headline gain; gasoline was up 28.4% from a year earlier, fuel oil up 54.3%, airline fares up 20.7% [1]. Real average hourly wages fell 0.5% on the month and 0.3% over the year, the first negative annual reading since April 2023 [2].

By Thursday the word the Federal Reserve has spent five years refusing to use was on three institutional letterheads. RSM Chief Economist Joe Brusuelas, in a note dated Tuesday, called it by name: "stagflation lite remains the economic baseline" [3]. He told Yahoo Finance the same morning that the equity market would "continue to be decoupled from the real economy" while the middle and working class absorb the supply shock, and that he expected headline CPI to peak "at or above 4.5%" [4]. Bloomberg Economics told subscribers it expects a four-handle in the May print. Principal Asset Management pushed its base case for the first Fed rate cut to December and flagged "rising risk" that it slips to 2027 [5].

This is the divergence the paper has been tracking. For two months the Federal Reserve, in public statements and in Powell's last FOMC press conference, treated the war premium as transitory — a one-time supply shock that would unwind once oil moved. The sell-side desks on X have been saying the opposite. This week the desks put it in writing. The frame moved from analyst chatter to base case.

The mechanics of the print are unsentimental. The Strait of Hormuz remains under the Iranian Persian Gulf Strait Authority's transit regime; Brent closed Tuesday at $107.77 and traded around $105 to $106 Thursday after the Trump-Xi readout arrived. The IEA said in its May 13 report that the global market will be "severely undersupplied" until October even if the war ends next month. The supply shock has a calendar attached to it, and that calendar runs through summer driving season.

Energy was 40% of the April gain. The rest was the second-round effect Brusuelas predicted in his March CPI note: transportation costs surging into airline fares (+2.8% on the month) and into food at home (+0.7% on the month, the largest monthly gain since August 2022) [1]. Shelter, which had been easing, rose 0.6% — double the March pace — partly due to a one-time BLS adjustment for last year's government shutdown but partly, as Heather Long of Navy Federal Credit Union told CNBC, because "inflation is a problem beyond the Iran war impacts" [1]. Apparel, tariff-sensitive, rose 0.6%. Household furnishings rose 0.7%.

The Fed's Tuesday data also did damage to wages. Annual real-wage growth went negative for the first time in three years — paychecks grew 3.6% from a year earlier; prices grew 3.8% [2]. Brusuelas read the labor implication: "negative wages have set in amongst the American public… their living standards are in decline at this point" [4]. KPMG's Diane Swonk wrote that "actual inflation is rising faster than the annual figures suggest" because the October 2025 shutdown zeroed the data and now falls out of the year-over-year base. She added: "We are unlikely to see a repeat of the 1970s but the risks are rising" [6].

The Federal Reserve held rates at 3.50–3.75% at Powell's last FOMC at the end of April on an 8–4 vote — the most dissents at a single meeting since 1992. Stephen Miran wanted a quarter-point cut. Three regional presidents wanted to hold language that would have pointed to a future cut. The CME Group's FedWatch tool, after the April CPI print, briefly priced a 30% probability of a rate hike by year-end — the first time hike odds have moved meaningfully off zero since the easing cycle began [1].

The political implications are what makes Brusuelas's "stagflation baseline" frame matter. Stagflation is not a problem the Fed can solve with a single tool. Raise rates and the labor market — which Brusuelas notes "looks better on paper than it feels to most workers" — gets crushed. Cut rates and inflation expectations risk untethering. KPMG's Swonk wrote that this is "a very hard moment for someone to take over at the helm of the Fed" [6]. The someone is Kevin Warsh, confirmed 54–45 Wednesday, term beginning Friday.

The Warsh transition is not a clean handover. Powell remains on the Board. Warsh has, in his confirmation hearing, called for "a regime change in the conduct of policy" and a "new and different inflation framework." He has also said publicly he favors rate cuts. Goldman Sachs and Bank of America, according to Babypips, have recently moved from predicting cuts to discussing the possibility of hikes [7]. Sell-side X notes have parsed Warsh's confirmation testimony for hints about whether he will let the war premium drift into core or move against it. The April print sharpens that question without answering it.

One more datapoint. Brusuelas in his RSM note: "underlying inflation conditions because of oil and gasoline prices imply a north of 4% in inflation in the May CPI reading… pricing dynamics will stimulate talk of rate hikes rather than rate cuts as we head into the second half of the year" [3]. That is the inversion of every consensus forecast that came out of the Fed's December dot plot. The May 21 PCE release and the June FOMC minutes will tell whether Warsh's regime — pluralized, because Powell stays on the Board — moves the framework or rides the war premium.

The paper's frame holds. The war is the macro story. The war premium is structural for now. The Fed's options have narrowed. Stagflation as a baseline is a different paper from stagflation as a tail risk, and that change happened Tuesday.

-- THEO KAPLAN, San Francisco