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South Korea’s Tax Overhaul Faces National Assembly Review After Kospi Slump

Foreign investors have sold over 573 billion won following the reforms’ unveiling, pushing lawmakers to consider amendments

People pass by a screen showing the Korea Composite Stock Price Index (KOSPI) at the Korea Exchange in Seoul, South Korea, April 11, 2025. REUTERS/Kim Soo-hyeon/File photo
The logo of the Korea Financial Investment Association is seen in this undated file photo. (Yonhap)
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Overview

  • The Finance Ministry’s plan boosts the top corporate tax rate to 25% from 24% and raises the securities transaction tax to 0.20% from 0.15%.
  • It lowers the capital gains threshold for major shareholders from 5 billion won to 1 billion won, prompting a petition with over 135,000 signatures and ruling party proposals for alternatives.
  • Foreign investors dumped about 573 billion won in the two trading days after the announcement, triggering a 3.9% one-day Kospi drop and a modest 0.9% rebound.
  • Citigroup, Goldman Sachs and CLSA warned that heavier tax burdens and policy inconsistency threaten investor confidence and could extend market volatility.
  • Democratic Party lawmakers are drafting amendments as major domestic brokerages forecast a prolonged market correction.