US consumer prices rose 0.6 per cent in April and 3.8 per cent year on year, the Bureau of Labor Statistics reported on Tuesday morning, lifting headline inflation to its highest level since May 2023. The release confirmed what analysts had been forecasting since the Iran war pushed Brent crude past $100 a barrel in late February: a sustained gasoline-led inflation surge that is now eating into wage gains.
Energy dominated the story. The headline energy index rose 3.8 per cent month on month and 17.9 per cent year on year, with gasoline up 28.4 per cent annually and fuel oil up 54.3 per cent. The BLS attributed "more than 40 per cent of the monthly all-items increase" to the energy contribution alone.
Core inflation, which strips out food and energy, also surprised to the upside. The core CPI rose 0.4 per cent month on month and 2.8 per cent year on year, the strongest monthly print since January 2025. Shelter contributed 0.6 per cent, food at home 0.7 per cent and food away from home 0.2 per cent. Used-car prices, which had been a disinflationary contributor for most of 2025, switched back to positive for the first time in nine months.
The political response was immediate. Senator Josh Hawley and Representative Anna Paulina Luna introduced parallel bills in the Senate and House respectively to suspend the federal gas tax, the proposal Trump told CBS News on Monday he intended to support. House Democrats indicated they would block any suspension unaccompanied by replacement Highway Trust Fund revenue. Speaker Hakeem Jeffries said in a Tuesday statement that "Americans deserve a coherent answer to the price of gas — and a coherent answer is not a temporary tax cut with no funding pair".
The Federal Reserve has resisted political pressure to pre-emptively cut rates through the gasoline-led inflation surge. Chair Jerome Powell, in semi-annual congressional testimony on May 6, described the energy-led component as "a tax on the household sector that does not respond to monetary policy" and said the Federal Open Market Committee would continue to hold the federal funds rate in the 4.25–4.50 per cent range while waiting for the energy contribution to dissipate.
Federal Reserve modelling cited in last week's House Financial Services hearing suggested that gas-pump prices alone account for roughly half of the eight-percentage-point swing in Trump's job-approval rating since February. The administration is weighing additional Strategic Petroleum Reserve releases, gas-tax suspension and reciprocal-tariff exemptions for crude from non-Iranian Gulf suppliers.
Equity markets absorbed the print without a sharp move. The S&P 500 closed 0.15 per cent lower at 7,401 on Tuesday; the Nasdaq added 0.12 per cent. Ten-year Treasury yields ticked up two basis points to 4.46 per cent. The dollar held its gains against the yen but eased against the euro on the prospect that the Fed's hold continues.