What moved the numbers
The Bureau of Labor Statistics reported a 0.4% monthly increase in headline CPI for August and a 3.4% rise from a year earlier, both in line with expectations. The gains were spread across categories rather than hinging on a single component.
Energy did a lot of the heavy lifting. Gasoline climbed 3.9% in the month, responsible for over a third of the index's August increase. The broader energy index added 2.1% and stood 16.3% above its level a year earlier. Over 12 months, gasoline was up 27.4% and fuel oil was up 52%.
Food costs ticked up 0.1% in August, with food at home flat, while the food index rose 2.7% from a year ago. Shelter costs increased 0.3% after easing in the prior two months, and transportation services rose 0.5%. Used cars and trucks gained 0.4% and new vehicle prices rose 0.3%. Apparel was unchanged and motor vehicle insurance declined 0.8%.
Markets and odds
This CPI print is the last big inflation reading the Federal Reserve will digest before its meeting wraps up Wednesday with a rate decision. Stocks rallied in futures trading as oil prices fell in the morning, and Treasury moves were mixed. The 2 year Treasury yield climbed by 4.6 bps, finishing at 4.594%. A single basis point is equal to 0.01%.
Bets on a September hike jumped after the data. The CME Group's FedWatch gauge of fed funds futures showed the odds of a quarter point increase nearing 90%, up from nearly 70% heading into the report.
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What officials and economists said
The outcome next week could hinge on fine margins, with some suggesting the call could rest on CPI differences as small as 0.01 percentage points. Chairman Kevin Warsh has emphasized getting inflation back to 2% and recently said, "we have work to do," a stance many took as favoring a hike, while some other officials in recent weeks have urged patience.
Chris Zaccarelli, Northlight Asset Management's chief investment officer, said, "There's no guarantee that the Fed will hike next week, but it's hard to see how the central bank can justify leaving rates on hold." Kathy Bostjancic, chief economist at Nationwide, said, "Chair Warsh and others signaled that interest rates can remain on hold only if disinflation continues and today's August report did not deliver that," adding, "Further, the renewed march higher in oil, gasoline and diesel prices add to concerns that higher energy prices could spill over to other goods and services and inflation expectations." Nationwide now expects a quarter point increase next week.
What it means for your money
The fed funds rate remains in a 3.5% to 3.75% range, where it has stayed throughout 2026. If policymakers lift it by a quarter point as futures markets imply, borrowing costs that track the benchmark could notch higher. Markets have already moved on the data and will key in on Wednesday's vote. For households, the takeaway is simple enough to say over coffee - energy costs are setting the tone again, and the Fed is watching closely.
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