US Wholesale Inflation Jumps to 5.4% in August, the Highest Reading of 2026

US wholesale inflation accelerated again in August, with the Producer Price Index rising 0.4% for the month and 5.4% over the prior 12 months, according to Bureau of Labor Statistics data released Thursday. That annual figure came in above the 5.3% consensus estimate and marks the highest 12-month PPI reading of 2026, according to Quartz.

The move built on a hotter-than-expected trend line. Quartz reported the annual rate stood at 4.8% in July (revised up from an initial 4.7%) after peaking at 5.9% in May and retreating through the summer. August's print reverses that cooling trend.

Energy and Diesel Did the Damage

Goods prices rose 1.1% in August, ending two straight months of declines, according to the BLS data cited by Crypto Briefing and Action Forex. Energy accounted for more than three-quarters of that increase, with the energy index up 4.2%.

One line item stood out: diesel fuel prices jumped 24.1% for the month, according to multiple outlets including Benzinga and Action Forex. Gasoline, jet fuel and home heating oil also rose, while residential electric power prices slipped 0.5%.

Services were far calmer, up just 0.1% for the month. Transportation and warehousing prices rose 2.3%, driven by a 2.0% increase in truck freight costs, while trade services (a proxy for retail and wholesale margins) fell 0.2%, according to the BLS release.

Two Different "Core" Numbers

Coverage of the report split on which "core" figure to lead with, and the two measures tell slightly different stories. Core PPI excluding food and energy rose 0.2% in August and 4.6% year-over-year, up from a revised 4.3% in July, according to FXStreet, Benzinga and Investing Live.

A broader core measure, PPI excluding food, energy and trade services, rose 0.3% for the month and 4.7% year-over-year, unchanged from July, according to Quartz, Crypto Briefing and Action Forex. That measure strips out retail and wholesale margins in addition to volatile food and energy costs, and several outlets referred to it simply as "core PPI" without noting the narrower ex-food-energy figure ran a full 0.1 point lower on a monthly basis. Both numbers are accurate; they measure different things.

Further up the supply chain, pressure was even sharper. Processed goods for intermediate demand rose 1.8% in August and 11.5% year-over-year, while unprocessed intermediate goods climbed 12.8% annually, according to Action Forex and Quartz. This suggests cost pressure building before it even reaches store shelves.

Markets React, Fed Odds Climb

U.S. stock futures fell in premarket trading after the report. By 8:39 a.m. ET Thursday, the S&P 500 was down about 0.5%, the Nasdaq 100 off 0.8%, the Dow down 0.5% and the Russell 2000 down 0.6%, according to Benzinga.

The 2-year Treasury yield, the maturity most sensitive to Fed policy, rose roughly 5 basis points to 4.50%. The dollar index climbed to about 98.91 by Benzinga's count and briefly topped 99.00 according to FXStreet. Gold, tracked through the SPDR Gold Shares ETF, fell 1.1% to $4,340 an ounce. Bitcoin dropped about 1.4% to under $77,000, according to Crypto Briefing.

Fed funds futures priced a 62% chance of a rate hike at next week's Federal Reserve meeting before the report and climbed to 66% afterward, according to Benzinga. Investing Live put the figure at 64%, while Polymarket's prediction market showed 54% odds, per Benzinga. The spread across these trackers reflects timing differences and methodology, not disagreement over the data itself.

The Case for Caution

There's a reasonable argument that the Fed shouldn't overreact to this report. The broader core measure, PPI excluding food, energy and trade services, actually slowed slightly on a monthly basis, from 0.4% in July to 0.3% in August, even as the headline number jumped. Nearly the entire monthly acceleration traced to a single volatile category, diesel fuel, up 24.1% in one month. A supply-side energy shock is a different animal than broad-based demand-driven inflation, and some economists would caution against tightening policy in response to a price spike that could reverse as quickly as it appeared.

The counterargument, reflected in the market's immediate reaction, is that the Fed has explicitly flagged inflation as the top risk heading into this week's data, and a 5.4% annual PPI reading, the highest of the year, gives hawks concrete ammunition regardless of which line item drove it.

The Consumer Price Index for August is scheduled for release Friday, September 11. Economists expected the annual rate to hold steady at 3.4%, according to Benzinga, though that forecast predates Thursday's hotter PPI print. Whether Friday's number moves in the same direction will likely determine how much weight the Fed's rate-setting committee puts on this week's data when it meets next week.