South Korea's economy grows 1% in Q3 on chip boom, beating forecasts
South Korea's GDP rose 1.0% in July–September, more than three times the central bank's forecast, as AI-driven semiconductor exports and chip-equipment investment soared — but household spending fell for the first time in nearly four years. The Kospi jumped more than 3% on Tuesday.
At a glance
- South Korea's economy grew 1.0% quarter-on-quarter in July–September 2026, the Bank of Korea's advance estimate showed on Tuesday, October 27 — far above its own August forecast of 0.3% and economists' median of about 0.7%.
- From a year earlier, GDP grew 3.4%, slightly slower than 3.7% in the second quarter.
- Exports rose 2.3% and facilities investment jumped 4.1%, led by semiconductors and chip-making equipment; a central bank official estimated chips account for about half of growth.
- Private consumption fell 0.2%, its first decline in nearly four years, showing the chip boom has not yet reached households.
- The Kospi rose more than 3% on Tuesday, triggering a 'sidecar' pause in programme trading, as Asian markets followed a tech-led rally on Wall Street.
South Korea's economy grew 1.0% in the third quarter of 2026 compared with the previous three months, the Bank of Korea said on Tuesday, October 27, more than three times the central bank's own forecast. The surge was driven by the global boom in artificial-intelligence chips, which lifted semiconductor exports and investment in chip-making machinery, while household spending slipped for the first time in nearly four years.
The data landed as South Korean shares raced higher. The benchmark Kospi rose more than 3% in morning trade, strong enough for the Korea Exchange to trigger a "sidecar" — a short pause in computer-driven programme trading.
The numbers
The Bank of Korea's advance estimate showed GDP up 1.0% quarter-on-quarter in July–September. In August the bank had projected just 0.3%, and economists surveyed beforehand had expected about 0.7%. Compared with the same quarter of 2025, the economy was 3.4% larger, a little slower than the 3.7% annual pace of the second quarter.
| Component (Q3 2026, q/q) | Change |
|---|---|
| GDP | +1.0% |
| GDP (year-on-year) | +3.4% |
| Exports | +2.3% |
| Imports | +2.4% |
| Facilities investment | +4.1% |
| Intellectual property investment (R&D, software) | +2.3% |
| Private consumption | −0.2% |
Exports were led by semiconductors, machinery and electrical equipment. Imports grew slightly faster, pushed up by crude oil and imported chip-making equipment. Facilities investment rose 4.1%, mostly machinery for semiconductor plants. A Bank of Korea official estimated that chips are now responsible for roughly half of the country's economic growth.
Real gross domestic income, which accounts for trade prices, rose 18.8% from a year earlier — its fastest increase in almost 49 years — because chip prices have risen so sharply. Semiconductor exports in the quarter were about $148 billion, more than three times the level a year ago.
Background: a recovery powered by memory chips
South Korea's economy shrank 0.1% in the last quarter of 2025, then rebounded strongly as orders for high-bandwidth memory used in AI data centres poured into Samsung Electronics and SK Hynix.
| Quarter | GDP growth (q/q) |
|---|---|
| Q4 2025 | −0.1% |
| Q1 2026 | +1.8% |
| Q2 2026 | +0.6% |
| Q3 2026 | +1.0% |
The chip boom has also produced record trade surpluses. South Korea's second-quarter current-account surplus of $116.6 billion was larger than the combined surpluses of Germany and Japan for the first time since records began in 1996, and the International Monetary Fund expects a surplus of more than $420 billion for the full year, second only to China.
Reactions
Analysts said the figures confirm how strong chip demand remains but also how lopsided the economy has become. An economist at a global research firm warned that the main risk is growth staying heavily concentrated in semiconductors, leaving the economy exposed if AI spending slows. Others noted that the fall in private consumption shows ordinary households are not yet feeling the gains, with high living costs weighing on spending.
The Bank of Korea said it expects exports and investment to stay robust in the fourth quarter and consumption to recover gradually, helped by dividends and bonuses paid by chip companies. The stronger-than-expected result means the bank is likely to raise its 3.3% growth forecast for 2026 when it updates its outlook.
Markets on Tuesday
Asian stock markets mostly rose after a Nasdaq-led session on Wall Street, where Anthropic's filing for a stock market listing lifted technology shares.
| Market (Tuesday, Oct 27, morning) | Move |
|---|---|
| Kospi (South Korea) | +3.4% to +3.8%, sidecar triggered |
| Kosdaq (South Korea) | about +2.8% |
| Nikkei 225 (Japan) | about +1.7%, led by chip stocks |
| Shanghai Composite (China) | about −0.1% |
| Hang Seng (Hong Kong) | about −0.4% |
| Gold | just above $4,000 an ounce |
China's industrial profits jumped 14.4% from a year earlier in September, official data showed separately, while oil prices edged slightly lower despite continuing attacks between Saudi Arabia and Yemen's Houthis.
Why it matters
South Korea is the world's second-largest maker of memory chips and a bellwether for global technology demand, so its growth is watched closely by investors everywhere. For South Asia, the chip boom is a reminder of how strongly AI spending is reshaping trade: memory prices affect the cost of smartphones, laptops and data centres in Pakistan and India, and Korean electronics firms are major investors in the region. The weak consumer picture, however, shows that even a booming export sector does not automatically lift household incomes.
What happens next
The Bank of Korea will publish revised third-quarter figures in early December and its new economic outlook in November. Markets across Asia are also watching the Bank of Japan's policy decision on Friday, October 30, Australia's quarterly inflation data on Wednesday, and big US technology earnings later this week.
Questions people are asking
How much did South Korea's economy grow in the third quarter of 2026?
South Korea's GDP grew 1.0% from the previous quarter and 3.4% from a year earlier in July–September 2026, according to the Bank of Korea's advance estimate released on October 27.
Why did South Korea's economy grow faster than expected?
Booming global demand for AI memory chips lifted semiconductor exports and investment in chip-making machinery. Exports rose 2.3% and facilities investment 4.1% in the quarter.
What is a sidecar on the Kospi?
A sidecar is a five-minute pause in programme (computer-driven) trading that the Korea Exchange triggers when futures move sharply. It was activated on October 27, 2026, as the Kospi rallied more than 3%.
