Last updated: September 11-14, 2026. Editorial Team — researched using primary data from the Bureau of Labor Statistics and reporting from CNBC and Kiplinger. See “Sources & Methodology” for our full source list.
Quick Answer
The August Consumer Price Index rose a seasonally adjusted 0.4%, putting the 12-month rate at 3.4%, the Bureau of Labor Statistics reported Friday, September 11 — both figures in line with the Dow Jones consensus. Core CPI, which strips out food and energy, accelerated 0.3% for the month, a tenth of a percentage point above forecasts, though the annual core rate actually eased to 2.4%, its lowest level since March 2021. The report was the final major inflation data point the Fed will see before next week’s policy meeting, and traders responded by increasing bets on a rate hike, with market pricing moving toward roughly 70% odds following the release — up from the closer-to-coin-flip odds seen earlier in the week.
The Headline Numbers, and the PPI That Preceded Them
Thursday’s Producer Price Index report set the stage for Friday’s CPI release. The PPI rose a seasonally adjusted 0.4% in August, in line with consensus, putting the annual rate at 5.4% — still well above the Fed’s 2% inflation target and a tenth of a percentage point higher than expected. Core PPI, excluding food and energy, accelerated 0.2%, actually slightly below the 0.3% forecast, while core PPI excluding trade services rose 0.3%, in line with estimates. Stock market futures turned negative following the PPI release, and traders slightly increased their bets on a rate increase, pushing CME Group FedWatch odds close to 66% ahead of Friday’s CPI data.
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Gasoline Did Most of the Heavy Lifting
The specific driver behind August’s inflation uptick is genuinely clear in the data: energy prices, and gasoline in particular. Gasoline prices surged 3.9% in August after falling 2.9% in July, and were 27.4% higher than a year earlier — up from a 24.6% annual increase in July. The CPI report itself noted gasoline accounted for “over one third of the monthly all items increase,” a striking concentration in a single category. The broader energy index, including gasoline, electricity, and fuel oil, rose 2.1% in August after falling 1.5% in July, and was up 16.3% from a year earlier, versus 14.7% annually in July. That energy-driven pattern connects directly to the ongoing Middle East conflict and its effect on oil prices discussed in our companion coverage of this week’s broader market volatility.
Shelter Costs Continue Their Gradual Cooling
Not every major CPI component moved in the same direction. Shelter costs, historically the stickiest component of inflation, advanced 0.3% in August after two straight monthly increases of just 0.1%. Over the past year, shelter prices rose 3.0%, down from 3.2% in July — a continuation of the gradual, multi-year cooling trend in housing-related inflation that has been one of the more encouraging threads within an otherwise mixed inflation picture. The CPI report also noted food away from home rose 0.3%, with restaurant inflation surpassing grocery inflation once again — a detail worth noting for anyone tracking where price pressure is actually showing up in household budgets.
The Core Rate’s Genuinely Mixed Signal
This is the detail that made August’s report harder to read than a simple “inflation is accelerating” headline suggests. Core CPI rose 0.3% on a monthly basis, up from 0.2% in July and a tenth of a point above forecasts — a genuine acceleration in the monthly pace. But the annual core rate told a different story: 2.4% year-over-year, actually down from 2.5% in July and in line with economists’ estimates, marking the slowest annual core inflation reading since March 2021. That combination — a hotter monthly print alongside a cooler annual trend — is exactly the kind of mixed signal that makes a single inflation report hard to interpret cleanly, and it’s part of why this report didn’t produce a uniformly hawkish or dovish market reaction on its own.
What Fed Officials and Economists Are Saying
CNBC’s coverage captures the specific read from Fed Chair Kevin Warsh, who has expressed a firm commitment to getting inflation back to the Fed’s 2% target and said recently that if the numbers don’t improve, “we have work to do” — comments widely interpreted as advocating for a rate hike, even as several other Fed officials have counseled a more patient approach in recent weeks. Kathy Bostjancic, chief economist at Nationwide, offered a direct assessment of what August’s report means for that internal Fed debate: “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. 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 hike at next week’s meeting.
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Why the Fed’s Decision Still Isn’t a Sure Thing
Despite the shift toward higher hike odds, it’s worth being precise about how close this call remains. Heading into the CPI release, markets were already pricing in a nearly 70% probability of a quarter-point hike, but there had been genuinely differing views on which way the rate-setting committee would tilt, with some analysts speculating the difference could come down to hundredths of a percentage point in the CPI reading itself. That’s a useful reminder that even a report broadly read as “hawkish” doesn’t settle the question entirely — particularly with the fed funds rate having sat in its current 3.5%-3.75% range for all of 2026, a genuinely long stretch of policy stability the Fed has shown some reluctance to disturb without clear justification.
What’s Next
The Consumer Price Index news release for September 2026 is scheduled for Wednesday, October 14, 2026 — but the more immediate catalyst is the Fed’s own policy meeting next week, where the committee will vote on its key interest rate with this report as the last major inflation data point in hand. The Fed’s own preferred inflation gauge, the personal consumption expenditures price index, incorporates both this CPI data and the earlier PPI report, though the PCE reading itself won’t be released until later in September, after next week’s policy meeting has already concluded.
Frequently Asked Questions
What was the August 2026 CPI inflation rate?
Headline CPI rose 0.4% for the month, putting the 12-month rate at 3.4%. Core CPI (excluding food and energy) rose 0.3% monthly, with the annual core rate at 2.4% — its lowest level since March 2021.
Why did inflation rise in August?
Gasoline prices, up 3.9% for the month and 27.4% year-over-year, accounted for over one-third of the monthly increase in the overall CPI, tied to ongoing Middle East-related oil market disruption.
How did markets react to the CPI report?
Traders increased bets on a Fed rate hike at next week’s meeting, with market pricing moving toward roughly 70% odds of a quarter-point increase.
What is the Fed’s current interest rate?
The federal funds rate has been in a range of 3.50%-3.75% for all of 2026, with a decision on whether to raise it expected at next week’s FOMC meeting.
Sources & Methodology
This article draws on primary data and reporting from: the Bureau of Labor Statistics’ official Consumer Price Index news release for August 2026 (September 11, 2026) and Producer Price Index release; CNBC’s September 10-11, 2026 coverage of the PPI and CPI reports, including quoted commentary from Nationwide’s Kathy Bostjancic; and Kiplinger’s coverage of the August CPI data and economist reactions. Figures reflect officially published BLS data as of this article’s last-updated date.
This article is for informational purposes and does not constitute financial or investment advice.
