South Korea's benchmark KOSPI index slid 2.3% on Tuesday, driven by growing investor anxiety over potential taxes targeting artificial intelligence companies. The sell-off wiped billions off the market cap of key tech stocks as traders scrambled to price in the possibility of a new levy on AI-driven profits.
Why AI Taxes Are Spooking the Market
Investors are worried that the government may introduce a special tax on AI-related earnings, similar to existing surcharges on gaming or real estate. The concern first surfaced after policymakers hinted at exploring new revenue sources to fund social programs. No formal proposal has been released, but the mere suggestion has been enough to rattle a sector already under pressure from global tech sell-offs.
South Korea is home to some of the world's largest semiconductor and electronics firms, many of which are racing to expand AI capabilities. A tax on AI profits would hit companies like Samsung Electronics and SK Hynix, though the precise scope remains unclear. The lack of detail has only added to the uncertainty.
Tech Stocks Lead the Decline
Heavyweights in the tech and semiconductor space bore the brunt of the drop. Samsung Electronics fell more than 3%, while SK Hynix lost nearly 4%. Smaller AI firms and software developers saw even steeper declines. The KOSPI's losses were broad, but the tech sector accounted for the largest share.
Foreign investors were net sellers, offloading roughly 400 billion won worth of shares. Institutional investors also trimmed positions, though retail buyers stepped in during the afternoon session, limiting the damage.
What Comes Next
The government has not set a timeline for any AI tax proposal. The finance ministry said it is reviewing various options but stressed that no decisions have been made. Market watchers are now looking to next week's parliamentary hearings, where lawmakers are expected to question officials about fiscal plans. Until then, volatility is likely to persist.
