The debate over South Korea's Financial Investment Income Tax, or FIIT, has been reignited.
A key lawmaker recently called to reconsider the tax, which was abolished in late 2024. This move comes at a time when the KOSPI has surged past 6,000 points, changing the entire conversation around market stability and fairness.
Three main factors are driving this renewed discussion. First, the booming stock market has weakened the long-held argument that any talk of taxes would immediately cool down investor sentiment. With stock indices at all-time highs, the fear of a "market crash" from a new tax seems less convincing to proponents.
Second is the issue of fairness. Currently, profits from domestic stocks are largely untaxed for most retail investors, while those from overseas stocks are taxed at a hefty 22% on gains over 2.5 million won. This glaring disparity has fueled growing calls for a more balanced and equitable tax system.
Finally, the government's recent decision to raise the Securities Transaction Tax (STT) adds another layer. The STT is a tax on every trade, regardless of profit or loss. Reintroducing a profit-based tax like the FIIT while keeping a high STT would feel like 'double taxation' to many. Therefore, any new FIIT proposal must come as a "package deal" that includes lowering the STT.
However, using the FIIT to fund welfare programs has a potential flaw. Revenue from capital gains taxes is notoriously volatile, rising and falling with the market. Relying on it for stable, ongoing expenses like welfare could be risky, a point often highlighted in international studies by organizations like the OECD.
Ultimately, the path forward likely involves a carefully designed compromise. This could mean a "FIIT 2.0" with a higher tax-free threshold and a simultaneous reduction in the transaction tax to minimize market disruption and address fairness concerns.
- Financial Investment Income Tax (FIIT): A tax levied on profits from financial investments, including stocks and funds. The original plan included a basic deduction and loss offsets.
- Securities Transaction Tax (STT): A tax imposed on the seller for every stock transaction, regardless of whether a profit or loss is made.
- Double Taxation: The situation where the same income is taxed twice, in this case, through both a transaction tax (STT) and a capital gains tax (FIIT).