According to Seoul Economic Daily, South Korea's financial sector is discussing the potential reintroduction of a capital gains tax (금투세) following President Lee's April remarks on taxing investment profits to address regressive taxation in the current transaction-based system. Major securities firms, including members of the Financial Investment Association, have begun internal analysis on the policy's market impact and infrastructure requirements.
Retail investors account for approximately 47% of daily trading volume on the Korean stock exchange as of July 2026, significantly higher than the 30% average in the U.S. and Japan. Industry participants have raised concerns that the new tax could increase market volatility, particularly given existing high-frequency program trading by foreign and institutional investors. South Korea currently applies a 0.2% transaction tax to all investors, while capital gains taxation remains limited to major shareholders holding more than 5 billion won per stock.