Gasoline up 34% in a year: US inflation hits 3.7%, and bitcoin slips 1.8%
September CPI, released on October 14, showed headline inflation at 3.7% and core at 2.6%, both up from August. Fuel did most of the damage. Bitcoin closed the day about $1,500 lower, and short-term Treasury yields rose.
Key points
- US prices rose 0.6% in September and 3.7% over the year, up from 3.4% in August.
- Fuel drove it: energy was up 20.4% in a year and gasoline 34.2%. Core inflation, without food and energy, rose to 2.6%.
- Bitcoin closed the day about 1.8% lower, near $81,604, while the two-year Treasury yield rose.
Inflation picked up again
US inflation picked up again in September. The consumer price index (CPI) rose 0.6% in the month after seasonal adjustment, up from 0.4% in August, the Bureau of Labor Statistics said on October 14, 2026. Over 12 months, prices were up 3.7%, compared with 3.4% in August. Fuel did most of the damage, with gasoline 34.2% more expensive than a year earlier.
Core CPI leaves out food and energy because they swing a lot. It rose 0.3% for a second month in a row. Its annual rate climbed to 2.6% from 2.4%.
The data came out at 8:30 a.m. ET. It was the last major inflation print before the Federal Reserve's next decision on October 28.
Energy did the damage
The story of this report is fuel. Energy prices jumped 5.2% in September alone and were 20.4% higher than a year ago. Gasoline rose 9.1% in the month and 34.2% over the year. Fuel oil, used for heating, rose 15.3% in September and 74.2% over 12 months, the BLS release shows.
Higher fuel costs also showed up in travel. Airline fares rose 1.2% in the month and were 22.4% above their level a year earlier.
Other parts of the basket were calmer. Food prices were flat in September and up 2.5% over 12 months. Food at home slipped 0.1% in the month. Shelter, the largest single component, rose 0.4% in the month and 3.2% over the year. Car insurance fell 5.0% over the year, and used-car prices were 1.5% lower.
That split matters for the Federal Reserve. Fuel prices can reverse quickly, so an energy spike alone may not force a policy response. But core inflation also rose, and the Fed had already said in September that inflation "remains elevated" when it raised its target range to 3.75% to 4%.
Which prices rose most
Annual price changes by category show how concentrated the pressure is. Energy items are far above the headline rate, while most other categories sit close to or below it.
US CPI, September 2026, change over 12 months
%
Source: US Bureau of Labor Statistics, CPI release, October 14, 2026
How markets reacted
Bitcoin ended the day lower. CoinGecko's daily data put its closing price at about $83,115 on October 13 and about $81,604 on October 14, a drop of roughly $1,500 or 1.8%, according to CoinGecko. It recovered to about $82,156 the next day.
Government bond markets were calmer than the headline might suggest. US Treasury data shows the 10-year par yield closed at 5.19% on October 14, slightly below 5.21% the day before. The two-year yield, which tracks expectations for Fed policy more closely, rose to 4.82% from 4.79%, according to the Treasury. Higher short-term yields make holding bitcoin, which pays no interest, relatively less attractive.
Two weeks later, the Fed held its target range at 3.75% to 4%. The vote was 10 to 2. Governor Lisa Cook and Cleveland Fed President Beth Hammack wanted an immediate quarter-point hike, according to the October statement.
Compared with August
The month-over-month numbers show how quickly price pressure built. Energy rose 5.2% in September after 2.1% in August. Gasoline rose 9.1% after 3.9%. Shelter edged up to 0.4% from 0.3%, while food went from 0.1% to flat, according to the BLS release. Core inflation held at 0.3% for a second month.
The annual headline rate rose three-tenths of a point in one month, from 3.4% to 3.7%. Core rose two-tenths of a point, from 2.4% to 2.6%. Both moves go the wrong way for a Fed that wants inflation back at 2%.
The report also landed in a tighter policy setting. After the September hike, the Fed's interest rate on bank reserves rose to 3.90% and its primary credit rate, the rate it charges banks for short-term emergency loans, rose to 4.0%. Both took effect on September 17, the Fed's implementation note says. Every extra tenth of a point on inflation raises the odds that those rates go higher again.
Timeline
Fed raises its target range to 3.75% to 4%
New rates on reserves (3.90%) and primary credit (4.0%) take effect
September CPI: 0.6% monthly, 3.7% annual, core 2.6%
Bitcoin's daily close falls to about $81,604, per CoinGecko
Fed holds rates; Cook and Hammack dissent in favor of a hike
October CPI is due, per the BLS schedule
LC Insight analysis
This section is our reading of the facts above, not a statement of fact.
- The rise in the two-year yield is what crypto traders should watch. It reflects bets on more Fed tightening, and tighter money has tended to weigh on bitcoin.
- Core at 2.6% says most of the problem is energy. If oil eases, the Fed could pause sooner than feared. If not, October's two dissents make a December hike a live option.
- A 1.8% daily drop is small for bitcoin. We read it as a market already priced for a hawkish Fed, which limits the damage from data like this, at least for now.
What's next
- October CPI on November 10, 2026
- Fed decision in December
- Oil and gasoline prices, the main driver of headline inflation
- The two-year Treasury yield as a gauge of rate expectations
Disclaimer. This article is based on public information and the sources listed below as of the update time shown. It is for information only and is not investment, legal or tax advice. Figures may change as companies and authorities publish new data.
Sources
- US Bureau of Labor Statistics, Consumer Price Index, September 2026 (October 14, 2026)
- Federal Reserve, FOMC statement (September 16, 2026)
- Federal Reserve, Implementation note (September 16, 2026)
- Federal Reserve, FOMC statement (October 28, 2026)
- US Treasury, Daily Treasury par yield curve rates (October 2026)
- CoinGecko, Bitcoin price history
