AI-assisted research analysis by FutureKnowledge. Sources checked 29 October 2026. This is not investment advice.
Reviewed by FutureKnowledge: figures, dates and attributions were checked against the linked sources before publication.
US GDP grew at a 3.4% annualised rate in the third quarter, faster than forecast, while PCE inflation rose to 3.6% in September, data released on 29 October showed. Coming a day after the Federal Reserve held rates but signalled concern about inflation, the figures strengthen the case for a rate increase.
US GDP Q3: the key numbers
The Bureau of Economic Analysis advance estimate showed:
- Real GDP: 3.4% annualised growth in July to September, up from 2.2% in the second quarter.
- Nominal GDP: 5.6% annualised growth.
- Real final sales to private domestic purchasers, a measure of underlying demand: 4.9%, up from 4.6%.
- Quarterly PCE price index: 2.1% annualised, down from 5.0% in the second quarter; core PCE slowed to 2.5% from 3.3%.
Economists polled by Reuters had expected 3.2% growth, Reuters reported, the same consensus figure Fox Business cited from LSEG. Reuters said it was the fastest growth since the third quarter of 2025. StockTitan noted that second-quarter growth had first been estimated at 1.5% before being revised up to 2.2%.
September PCE inflation: the monthly picture
Quarterly inflation eased because the second quarter included an oil-driven surge. The monthly data for September, released alongside GDP, show prices picking up again at the end of the quarter:
| Measure (September) | Month on month | Year on year | August, year on year |
|---|---|---|---|
| Headline PCE | +0.5% | 3.6% | 3.4% |
| Core PCE (excluding food and energy) | +0.3% | 3.1% | 3.0% |
Both figures matched LSEG forecasts, according to Fox Business, which also reported goods prices up 3.9% and services prices up 3.5% from a year earlier. Core PCE is the gauge the Fed watches most closely against its 2% target; at 3.1% it is moving away from that target, not toward it.
What drove the third-quarter growth
Reuters’ breakdown of the US GDP report shows three main engines:
- Consumers: spending grew 3.8%, matching the second quarter and adding 2.52 percentage points to growth, per StockTitan’s tally of BEA data.
- AI-related business investment: spending on equipment jumped 20.9%, the fastest since the third quarter of 2020, contributing 1.16 points, the most in six years. Intellectual property investment, which includes software, rose 8.4%.
- Inventories and government: inventory rebuilding added 1.61 points, and government spending rose 5.3% on a rebound in federal outlays.
The large drag came from trade. Imports rose 19.7%, subtracting 2.64 points, and exports subtracted another 0.68, for a net trade drag of 3.32 points. Housing investment contracted again as mortgage rates rose with the Middle East conflict, Reuters said.
The equipment boom is the same AI spending visible in company reports this week: Microsoft’s quarterly capex and Alphabet’s $51.4 billion capex show the scale of data-centre investment flowing into the GDP figures.
Why it matters for the Fed
On 28 October the Fed held its benchmark range at 3.75% to 4.00%, in a vote where two members preferred an immediate hike, as covered in FutureKnowledge’s report on the Fed’s 10-2 decision. Reuters reported that economists see strong growth and firmer inflation strengthening the case for a December increase. Growth well above the roughly 2% pace some Fed officials see as non-inflationary leaves little reason to ease.
The household side is weaker than the headline. Reuters said real disposable income fell 0.3% in September and real consumer spending was flat, while Fox Business reported that the saving rate fell to 3.8% from 4.0% in August. Consumers are sustaining spending partly by saving less, and Reuters reported that economists expect growth to slow by year-end.
Market reaction and what it means for India
US stocks were mixed in early trading as investors weighed earnings from big technology companies; Yahoo Finance showed the 10-year Treasury yield near 5.0%. Higher US yields and the prospect of a Fed hike tend to make emerging-market assets less attractive to foreign investors.
For India, that matters because foreign investors have been net sellers. HDFC Sky reported that they sold about $3.74 billion of Indian shares in October so far, even though they bought for a second straight session on 28 October and the Sensex rose 905 points to 74,151 on 29 October. A US economy running hot, with rates possibly rising, would make reversing that outflow harder.
Who is more or less exposed
- More exposed to higher US rates: rate-sensitive sectors such as housing, highly indebted companies, and emerging markets that rely on foreign portfolio flows.
- Supported by the data: suppliers of AI equipment and data-centre infrastructure, whose orders appear directly in business investment.
- Mixed: exporters to the US, which benefit from strong demand but face a stronger dollar if US yields stay high.
Scenarios to watch (conditional scenarios, not predictions)
| If… | Then a plausible outcome is… |
|---|---|
| October inflation data stay firm | Expectations of a December Fed hike could firm further |
| Consumer spending slows as savings run down | Fourth-quarter growth could cool, easing pressure on the Fed |
| Oil prices fall on Middle East diplomacy | Headline inflation could ease, reducing the case for a hike |
| AI investment keeps accelerating | Business investment could keep supporting growth despite weaker housing |
What to watch next
- The October jobs report and October CPI data.
- Fed officials’ speeches ahead of the December meeting.
- BEA’s second estimate of third-quarter GDP.
- Foreign portfolio flows into Indian equities in November.
Bottom line
The US economy grew faster than expected in the third quarter, powered by consumers and AI equipment spending, but monthly inflation rose to 3.6% headline and 3.1% core in September. That mix leaves the Fed more likely to tighten than ease, with knock-on effects for global yields and emerging-market flows, including India’s.
Method note: This analysis compared the BEA’s third-quarter 2026 advance GDP estimate (primary source) with reporting by Reuters (via WHBL), Fox Business and StockTitan, plus Yahoo Finance for market levels and HDFC Sky for Indian market data. Quarterly PCE figures (annualised) and monthly September figures (year on year) measure different periods, which explains why they differ.