Inflation Held at 3.4% in August as Gasoline Drove the Monthly Gain

Prices were 3.4% higher in August than a year earlier, the same pace as in July, the U.S. Bureau of Labor Statistics reported on September 11, 2026 at 8:30 a.m. BLS That 12-month change is headline inflation, the broad cost-of-living measure. The index for all items increased 0.4% in August alone. BLS Excluding food and energy, what economists call core, the index rose 0.3% in August. Reuters

Gasoline drove much of that monthly move. The index for gasoline rose 3.9 percent in August, accounting for over one-third of the monthly all-items increase. BLS Food stayed hot versus last year. The 12-month change for Food was 3.4 percent in August, with Food at home at 2.7 percent and Cereals and bakery products at 2.2 percent. BLS

The August release was published under the Bureau's regular schedule. The Consumer Price Index news release for September 2026 was scheduled for October 14, 2026 at 8:30 a.m. ET. BLS The October 2026 release is scheduled for November 10, 2026. BLS

Borrowing costs were already tight going into the print. The Federal Reserve had kept its policy rate in the 3.50%-3.75% range since December as of September 2026, and inflation had run above the Federal Reserve's target for 5-1/2 years as of September 10, 2026. Reuters Most forecasters expected no change. In a September 4-9, 2026 Reuters poll, 65 of 93 economists expected the federal funds rate to remain in the 3.50%-3.75% range the following week. Reuters

For savers, top rates kept cash roughly even with 3.4% inflation, while the average account did not. APY means the yearly interest on savings. In September 2026, Bankrate listed the top high-yield savings account rate as 4.10% APY from CIT Bank and reported the national average savings rate at 0.63% APY. Bankrate Investopedia listed the best high-yield savings account rate as 4.40% APY from Vibrant Credit Union on balances up to $5,001 for new members. Investopedia NerdWallet reported that high-yield accounts could earn as much as 4% APY, against a national average savings rate of 0.38%. NerdWallet

The broader context here is persistence rather than reacceleration. Headline held at 3.4%. Sequential headline at 0.4% with core at 0.3% keeps the three-month and six-month annualized paces uncomfortably above target-consistent rates if sustained. Gasoline explains much of the monthly overshoot. That matters for near-term headline swings, but for policy it is the least sticky part.

Looking at what this means for the rate path, composition cuts both ways. Energy-driven headline strength does not by itself tighten the labor market or embed services inflation, yet a 0.3% core print alongside 3.4% food inflation gives hawks little room to call the overshoot contained. With the funds range at 3.50%-3.75% and 5-1/2 years above target, real policy is only modestly positive on a headline-deflated basis. That setup favors holding until sequential core softens on a sustained basis, which fits the 65-to-93 poll lean toward no change.

In my view, the risk for savers, borrowers and investors is overweighting the flat year-over-year rate. Base effects can hold the 12-month figure flat while the latest data firm. August did that. Less weight should go on 3.4% repeating and more on whether gasoline rolls over and whether food at home, at 2.7% year over year, passes through to away-from-home prices and wage demands. The September CPI on October 14 will carry more weight for that judgment than August alone.