September 2026 Inflation Is 3.7%: Gas Is Driving It

Inflation is back in the headlines. The government’s September report came out on October 14, and prices are rising faster than many people expected. If your grocery bill and your gas tank both feel different, this explains why, in plain English.

Below is what the official numbers say, which prices moved the most, and what a 3.7% rise means for a normal budget.

What is the inflation rate right now?

The Bureau of Labor Statistics (BLS) publishes the consumer price index, or CPI. The BLS describes it as a measure of the average change over time in the prices paid by consumers for a basket of goods and services. Think of it as tracking the price tag on a typical shopping cart over time.

The September 2026 report shows:

The monthly figures are seasonally adjusted, which means the BLS smooths out regular patterns such as holiday shopping. The 12-month figures compare September 2026 with September 2025.

Why are prices rising? It is mostly gas

Look at the energy row. Energy prices rose 5.2% in September alone and are up 20.4% over the year. Gasoline is the big piece: up 9.1% for the month and 34.2% over 12 months, per the BLS.

Other prices were calmer:

• Electricity: up 0.2% for the month and 4.4% over the year.
• Natural gas (home heating): down 0.3% for the month, up 5.0% over the year.
• Groceries (“food at home”): down 0.1% for the month and up 1.8% over the year.
• Eating out: up 0.2% for the month and 3.5% over the year.
• Airline fares: up 1.2% for the month and 22.4% over the year.
• Medical care: up 0.1% for the month and 1.5% over the year.

That is why the “core” number, which leaves out food and energy, is lower at 2.6%. Core inflation is useful because food and energy prices bounce around a lot, so it shows the underlying trend. But you still pay for gas, so the headline 3.7% is closer to what your wallet feels if you drive a lot.

What does 3.7% mean for my budget?

Here is an illustration, not a prediction. These numbers use the BLS percentages and simple math.

• Overall prices. If you spend $4,000 a month and your costs rose in line with the overall CPI, you pay about $4,000 × 0.037 = $148 more per month, or $148 × 12 = $1,776 more per year.
• Gasoline. Say you spent $200 a month on gas a year ago. With gasoline up 34.2%, the same driving costs $200 × 1.342 = $268.40. That is $68.40 more per month, or about $820.80 a year.
• Your salary. To keep up with 3.7%, a $60,000 salary would need to grow to $60,000 × 1.037 = $62,220, a raise of $2,220.

Your own numbers will differ, because the CPI measures an average basket and your spending is not average. Someone who drives 50 miles a day is hit harder by gas than someone who works from home.

Is my pay keeping up?

Not on average. The BLS also tracks real earnings, which is pay after adjusting for price changes. Real average hourly earnings for all employees fell 0.5% from August to September and fell 0.7% from September 2025 to September 2026, seasonally adjusted.

In plain terms, a typical hourly paycheck bought slightly less in September than a year earlier. That is an average. Many people got bigger raises, and some got none. Use our pay raise calculator to see how your own raise compares with inflation.

What about Social Security and the COLA?

The 3.7% headline is the CPI-U, which covers over 90% of the population. Social Security’s yearly cost-of-living adjustment uses a narrower measure, the CPI-W, which covers urban wage earners and clerical workers. The BLS reports that the CPI-W rose 3.9% over the same 12 months, to an index level of 330.654.

We cover the Social Security adjustment in a separate post, What We Know About the 2027 COLA. The CPI-W is the number that matters for that raise, not the headline CPI-U.

What happens next?

The BLS is scheduled to release the October 2026 CPI on November 10, 2026 at 8:30 a.m. Eastern. Nobody can say today what it will show. Gas prices can fall as fast as they rise, so one month does not make a trend.

What to do now

1. Look at your biggest changing bill first. If you drive a lot, track what you spent on gas in the past three months and compare it with last year.
2. Rebuild your budget with today’s prices. Put your real spending in our budget calculator instead of last year’s numbers.
3. Check your raise against 3.7%. If your pay rose less than that, you lost some buying power. Our inflation calculator shows what a dollar from a past year is worth today.
4. Cut the easy waste. Review subscriptions and recurring charges. Small cuts add up when everything costs more.
5. Don’t change long-term plans over one report. A single month of data is a snapshot. Read the October report on November 10 before making big decisions.

This article is general information, not personal financial advice. For decisions about your own money, consider talking with a qualified professional.