Third-quarter U.S. GDP increases a better-than-expected 3.4% as September inflation accelerates

GDP grew at a seasonally adjusted annualized rate of 3.4% in the third quarter. That was faster than economists expected and showed that overall economic activity remained strong despite uncertainty and higher energy costs.

The forecast was 3.1%, so growth exceeded expectations by 0.3 percentage point. The second quarter grew at a 2.2% rate, making the third-quarter acceleration substantial. The annualized figure estimates what growth would look like over a full year if that quarter’s pace continued.

The strength came from several areas. Consumer spending rose at a 3.8% pace, while gross private domestic investment surged 19.4%. Investment was supported by artificial intelligence-related construction and spending on equipment and intellectual property. Strong demand may give the Federal Reserve less urgency to cut rates, especially because inflation remains above target.

Gross domestic product, or GDP, measures the value of goods and services produced within an economy. It is a broad gauge of economic activity. Rising GDP usually means businesses, households, and governments are generating more output and income, although it does not measure every aspect of economic well-being.

The 3.4% figure is seasonally adjusted, so it removes predictable calendar effects such as holiday patterns. It is also annualized. That means the quarter’s growth pace is expressed as if it continued for four quarters, rather than saying output literally rose 3.4% during the quarter itself.

In this report, the 3.4% rate exceeded the 3.1% forecast and the previous quarter’s 2.2% rate. The increase reflected strong consumer spending and investment, including a 19.4% jump in gross private domestic investment. It showed considerable momentum, even as inflation remained elevated.

The personal consumption expenditures price index rose 0.5% in September on a seasonally adjusted monthly basis. That was the biggest monthly increase since March. The annual headline inflation rate reached 3.6%, keeping price growth well above the Federal Reserve’s 2% target.

Core PCE, which excludes food and energy, rose 0.3% for the month and 3.1% over the year. The core annual rate was 0.5 percentage point below headline inflation. Fed officials generally view core inflation as a better guide to longer-term trends because food and energy prices can move sharply.

Energy was a major reason headline inflation accelerated. Gasoline and other energy goods jumped 9.2% in September, while energy goods and services overall rose 5.4%. Even with better quarterly inflation readings, persistent annual inflation could make policymakers cautious about reducing interest rates.

Economic growth measures how much the economy produces, while inflation measures how quickly prices rise. They can move together when demand is strong. Businesses may sell more goods and services, but limited capacity, higher input costs, or stronger demand can also push prices upward.

The report gives several examples. Consumer spending grew 3.8% in the third quarter, and real sales to private domestic purchasers rose 4.9%. Gross private domestic investment soared 19.4%, driven by a 20.9% increase in equipment spending and an 8.4% rise in intellectual property products.

At the same time, energy prices created extra inflation pressure. Gasoline and other energy goods rose 9.2% in September, while energy goods and services broadly increased 5.4%. Thus, output gained from spending and investment even as energy costs raised prices for households and businesses.

Strong growth, persistent inflation, and low layoffs would give the Federal Reserve conflicting signals. A resilient economy can tolerate higher interest rates, while inflation above target suggests policymakers may need to keep rates restrictive. Low layoffs also indicate that economic activity has not weakened sharply.

The latest figures reinforce that tension. GDP grew 3.4% in the third quarter, beating the 3.1% forecast. Initial jobless claims fell to 194,000, below the 200,000 estimate. Meanwhile, annual headline PCE inflation stood at 3.6%, and core PCE was 3.1%.

The Fed had already voted to hold its benchmark rate in a range of 3.75%-4%. Officials said they could evaluate incoming data before making another move. These reports could support waiting for clearer evidence, though the article does not state the Fed’s final next decision.

Third-quarter growth came from several sources, but investment was especially powerful. The article links the expansion to higher investment from the artificial intelligence build-out, along with high levels of consumer and government spending. Together, these sources supported demand and production.

Consumer spending rose at a 3.8% annualized pace, matching the second quarter. Gross private domestic investment climbed 19.4%. Within that total, equipment spending surged 20.9%, while intellectual property products increased 8.4%. These figures show how strongly business investment contributed to growth.

Government spending was also described as high, though the article gives no separate percentage contribution. The artificial intelligence build-out appears important because it helped drive investment in equipment and intellectual property. If these forces continue, they can sustain growth; if they fade, the economy may lose momentum. The article does not quantify the AI share of GDP growth.

In standard national accounts, GDP is calculated by adding consumer spending, business and residential investment, government spending, and net exports. This is the expenditure approach. It totals spending on final goods and services produced in the economy, making it a measure of output and demand.

For example, the article reports 3.8% consumer spending growth and a 19.4% rise in gross private domestic investment. Equipment spending surged 20.9%, partly reflecting the artificial intelligence build-out. Those purchases pay companies to produce more equipment, software, and related services, raising measured GDP.

Higher energy costs can still pressure households and businesses at the same time. Energy goods and services rose sharply, reducing purchasing power and raising operating costs. But GDP can increase if other spending and investment grow enough to outweigh that drag. The report’s 3.4% growth rate shows total production rose, not that every sector or household benefited equally.