Gasoline jumped 21.2% in March. Consumer prices rose 0.9% month-to-month, pushing the annual inflation rate to 3.3%.

Energy shock lifts headline inflation

The Bureau of Labor Statistics reported on Friday that the Consumer Price Index climbed 0.9% from February to March, the biggest monthly increase since mid-2022. On an annual basis the index moved to 3.3%, up from 2.4% a month earlier. Those figures were driven almost entirely by energy: fuel costs accounted for roughly three-quarters of the monthly jump.

That 21.2% monthly leap in gasoline prices was the largest one-month spike since 1967.

The war with Iran has created a choke point on global crude flows, and that impact showed up in the U.S. CPI. Ship-tracking firm Kpler recorded only a handful of tankers crossing the Strait of Hormuz on key days, tightening supplies. The bottleneck pushed up crude, then refiners' costs, and then pump prices, which feed through to everything that gets moved by trucks and ships.

White House economic adviser Kevin Hassett acknowledged the jump on Fox Business and argued the boost will be temporary, saying: "Once we get back to the normal pace, then we expect things to get back to normal," Hassett, White House economic adviser, said. The administration pointed to falling prices in categories such as eggs and used cars to soften the headline numbers.

Markets and monetary policy

Markets reacted unevenly to the data. This Dow Jones Industrial Average and the S&P 500 slipped Friday while the Nasdaq composite eked out a small gain, reflecting investor worries about higher energy costs but also bets on growth stocks.

Traders have largely pushed back expectations for aggressive Federal Reserve rate cuts because of the fresh inflation reading. S&P and Nasdaq indexes nonetheless closed the week with notable advances, helped by pockets of optimism that a recent ceasefire might hold and ease some geopolitical risk.

Oil prices stayed elevated. Brent and U.S. Crude were trading near the upper $90s per barrel — well above pre-conflict levels around $70 per barrel and below the above-$110 highs seen earlier in the crisis. That gap matters: even if spot crude backs off, refined fuels like gasoline, diesel and jet fuel can take weeks to normalize.

Companies are already reacting. Airlines and logistics firms have slapped on fuel surcharges, and retailers from Amazon to grocers are flagging higher distribution costs. Those surcharges don't vanish overnight — some will stick, and some firms may pass them along to consumers.

Political fallout on both sides

The White House moved quickly to frame the spike as short-lived and tied directly to wartime disruptions. Kush Desai, White House spokesman, said the administration was working to "ensure the free flow of energy through the Strait of Hormuz" and credited the broader economic agenda — tax cuts, deregulation, and energy production — for keeping the economy on a solid track.

But Democrats seized on the numbers to score a political point. Senate Democratic Leader Charles E. Schumer called the surge in prices "skyrocketing inflation, the highest in years" and blamed the conflict and the administration's actions for the pain felt by consumers.

Republicans pushed back with a different frame: they argued the spike is a short-term consequence of military operations and that energy markets should calm before voters are focused on fall midterm races. That narrative hinges on the Strait of Hormuz reopening for normal tanker traffic — something shipping data suggest could take time.

Household wallets and real wages

The report included other worrisome signs for American households.

Average hourly earnings rose just 0.2% in March, the Bureau of Labor Statistics said, meaning real wages — pay adjusted for inflation — fell about 0.6% for the month. That squeeze already appears to be weighing on sentiment: the University of Michigan's survey showed consumer expectations at record-low levels in early April.

Heather Long, chief economist at Navy Federal Credit Union, warned that the gap between pay and prices is painful. "Inflation is almost eating up the entirety of Americans' wage gains already," Heather Long, chief economist at Navy Federal Credit Union, said in a note cited in the report.

Core inflation, which strips out volatile energy and food costs, rose just 0.2% in March. That suggests price pressure beyond fuel remains modest for now: medical care services didn't rise month-to-month, used-car prices actually fell, and several consumer goods saw declines. Still, the lag between energy spikes and core inflation means the full spillover could take months to materialize in the CPI.

Global strains and supply chains

Beyond U.S. Pump prices, the conflict created strains on global fuel supplies. The Airports Council International Europe warned of a potential jet-fuel shortfall in Europe within weeks if the Strait of Hormuz stays closed, raising the risk of higher air fares and disrupted travel schedules. That warning shows how regional conflicts can quickly morph into global supply headaches for refined products.

Kpler's shipping tallies showed the narrow window of tanker movement through the Hormuz corridor, and analysts say the knock-on effects — more expensive plastics and packaging, higher shipping costs, and refinery bottlenecks — can push component prices higher across many sectors.

Peter Boockvar, chief investment officer at One Point BFG Wealth Partners, said in a note that the timing of those secondary effects matters. "We have to understand that it will take months for the higher energy prices, along with plastics, packaging, etc... To flow into the core rate," Peter Boockvar, chief investment officer at One Point BFG Wealth Partners, said.

What consumers are paying now

On the ground, Americans have already felt the difference. AAA reported average gas prices at about $4.15 a gallon on Friday — a small dip from the day before, but still well above levels seen before the conflict. For many households, even a few dollars more per fill-up changes monthly budgets and spending choices.

And because fuel underpins so much of the economy, the effect shows up in unexpected places: rail and truck shipping costs rise; seasonal lawn and garden deliveries cost more; manufacturers pay more to move inputs. Some retailers have absorbed costs where they could. Others have raised prices or added surcharges, squeezing margins and consumers alike.

So the immediate question for markets and policymakers is straightforward: will the energy shock be fleeting or long enough to push inflation back toward the Fed's target over several months? If prices cascade into broader categories, the Fed may delay rate easing; if they settle back, the central bank will have more room to loosen policy later in the year.

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"We have to understand that it will take months for the higher energy prices...to flow into the core rate," said Peter Boockvar, chief investment officer at One Point BFG Wealth Partners.