Consumer prices rose 0.6% in September and 3.7% over the past year, up from 3.4% in August, the Bureau of Labor Statistics reported October 14, 2026. Gasoline jumped 9.1% and accounted for more than half of the monthly increase. Core inflation rose 0.3% for the second month in a row, slightly above economists’ forecasts.
Key Takeaways
- Annual core inflation, which excludes food and energy, rose to 2.6% from 2.4% in August. Economists expected 2.5%.
- The energy index rose 5.2% in September and is up 20.4% over 12 months. Fuel oil is up 74.2% year over year.
- Airline fares rose 1.2% for the month and are up 22.4% from a year ago.
- Food prices were flat overall: grocery prices fell 0.1%, while restaurant prices rose 0.2%.
- The 2-year Treasury yield rose more than 10 basis points to 4.89% after the release.
- The October CPI report is scheduled for November 10, after the Fed’s October 28 policy decision.
Energy Drove September’s CPI Increase
Energy was by far the largest driver in September. The energy index rose 5.2%, up from 2.1% in August, and gasoline rose 9.1% after seasonal adjustment, or 6.5% before it. Over 12 months, gasoline is up 34.2% and energy overall is up 20.4%.
Fuel oil stands out. It rose 15.3% in September and is now up 74.2% from a year earlier. That matters going into the heating season. The Energy Information Administration has already projected that households heating with oil, mostly in the Northeast, will spend about 21% more this winter, and many small businesses in that region heat with the same fuel.
Utilities were mixed. Electricity rose 0.2% in September and is up 4.4% year over year, while piped natural gas fell 0.3% for the month and is up 5.0% over the year. For businesses whose main costs are electricity and gas rather than fuel, September brought less pressure than the headline number suggests.
Core Inflation Edged Above Forecasts
The more important signal for interest rates is core inflation. It rose 0.3% in September, matching August, and the annual rate rose to 2.6% from 2.4%. Economists had expected a 0.2% monthly increase and 2.5% annually.
Collin Martin, head of fixed income research and strategy at the Schwab Center for Financial Research, noted that two straight 0.3% readings bring the three-month annualized core rate to 3.4%. That shorter-term measure is useful because it shows whether the 12-month figure is likely to rise or fall in the coming months.
Shelter, the largest part of core inflation, rose 0.4% after 0.3% in August, and is up 3.2% over the year. Lodging away from home, which covers hotels and short-term stays, rose 2.0% for the month. Other core categories that rose included recreation (0.5%), used cars and trucks (0.7%), and education (0.6%). Communication fell 0.2%, and prescription drug prices fell 1.2%.
Restaurants Benefit From Flat Grocery Prices
The food data offers some relief for restaurant and food-service owners. Food at home fell 0.1% in September and is up only 1.8% over the year. Beef fell 1.0% and milk fell 2.0%. Restaurant menu prices, meanwhile, rose 0.2% for the month and 3.5% over the year, with full-service meals up 3.8% and limited-service meals up 3.2%.
That gap matters for margins. When ingredient prices are flat and menu prices are still rising, restaurants may have some room to absorb higher fuel, delivery, and utility costs. The risk is on the customer side: if gas and heating bills keep rising, households may cut back on eating out.
Travel and Transportation Costs Keep Climbing
Businesses that send employees on the road face steadily higher costs. Airline fares rose 1.2% in September and are up 22.4% year over year, one of the largest annual increases among the major categories. Transportation services rose 0.6% for the month. Combined with higher gasoline and hotel prices, travel budgets set earlier in the year are likely too low.
The practical step for owners is to review fuel surcharges, delivery fees, and travel policies now, before fourth-quarter contracts and holiday shipping costs are locked in. Delivery, logistics, field-service, and trade businesses carry the largest fuel exposure and have the most reason to revisit pricing.
Higher Yields Raise the Stakes for the October 28 Fed Meeting
Bond markets reacted quickly. The 2-year Treasury yield, which closely tracks expected Fed policy, rose more than 10 basis points to 4.89%. The 10-year yield rose to about 5.3%. According to Schwab’s market update, citing Bloomberg data, market-implied odds of a Fed rate hike this month rose to about 46% from roughly 20% before the report.
For small businesses, the effect shows up in borrowing costs. Variable-rate credit lines, SBA loans tied to the prime rate, and equipment financing all follow Fed policy. MarketDaily has previously examined how a Fed rate hike would flow through to prime-based business loans. That analysis matters again ahead of the October 28 decision.
The same report also feeds directly into household budgets. CPI-W, the measure used for Social Security adjustments, rose 3.9% over 12 months. On the same day, the Social Security Administration announced a 3.6% cost-of-living increase for 2027, which will add about $75 a month to the average retiree’s benefit starting in January.
FAQs
What was the September 2026 CPI inflation rate?
The Consumer Price Index rose 3.7% over the 12 months ending September 2026, up from 3.4% in August. Prices rose 0.6% for the month on a seasonally adjusted basis.
What caused inflation to rise in September 2026?
Gasoline rose 9.1% for the month and accounted for more than half of the increase. Shelter, airline fares, and recreation also contributed.
What was core CPI in September 2026?
Core CPI, which excludes food and energy, rose 0.3% for the month and 2.6% for the year. Economists had expected 0.2% and 2.5%.
How does September CPI affect small businesses?
Higher fuel, travel, and heating oil prices raise operating costs, especially for delivery and field-service businesses. Higher Treasury yields also put upward pressure on variable-rate business borrowing.
When is the next CPI report?
The Bureau of Labor Statistics will release October 2026 CPI data on November 10, 2026, at 8:30 a.m. ET.
