Samsung, SK Hynix Boom May Lift South Korea’s Tax Windfall to $14.5 Billion

Corporate Tax, Stock Transaction Tax and Income Tax Drive Revenue Gains

South Korea’s tax revenue is rising faster than expected on the back of a semiconductor boom and a stock-market rally, fueling projections that this year’s excess tax haul could reach as much as $14.5 billion. Strong earnings at chipmakers including Samsung Electronics Co. and SK Hynix Inc. have boosted corporate tax receipts, while a surge in share trading has sharply increased stock transaction tax revenue. Markets are also watching whether the government uses the extra funds to invest in future growth industries such as artificial intelligence and semiconductors rather than pay down state debt.

Authorities said on June 14 that national tax revenue for January through April reached $119.1 billion, up $15.9 billion, or 15.4%, from a year earlier. That marks a stronger-than-expected pace given the government’s forecast, presented during the supplementary budget process, for total tax revenue of $301.4 billion this year.

Corporate tax, stock transaction tax and income tax are the main drivers of the increase. Corporate tax revenue totaled $28.3 billion in the first four months of the year, up $2.3 billion, or 8.9%, from a year earlier, helped by improved earnings at semiconductor companies such as Samsung Electronics and SK Hynix. A stock-trading boom tied to the chip-sector recovery is also pushing stock transaction tax receipts well above initial expectations. Revenue from the levy came to $3 billion in January through April, up $2.2 billion, or 290.9%, from a year earlier. That was the fastest increase among all tax categories.

Income tax revenue for January through April rose to $32.4 billion, up $4.3 billion, or 15.2%, from a year earlier, adding to the overall gain in tax collections. The increase reflected higher wage-income tax as performance bonuses rose, as well as larger capital gains tax receipts amid increased real estate transactions.

Market participants say national tax revenue this year could exceed the government’s projection by a wide margin. Applying the average tax collection pace of the past five years suggests revenue may top the official forecast by nearly $7.3 billion. If the current growth trend continues into the second half, the excess tax haul could widen to about $10.9 billion. Some estimates put it near $14.5 billion. That would be an upper-end scenario based on continued strength in the semiconductor cycle and financial markets.

If the tax windfall materializes, attention will turn to how it is used. President Lee Jae-myung said at a recent news conference marking his first year in office that he opposed using excess tax revenue simply for fiscal spending or repayment of government debt, and instead laid out a plan to direct it toward expanding future growth engines. That has fueled discussion in and around the government about using the money to support strategic industries including AI, semiconductors and advanced manufacturing.

Options under review also include creating an investment fund for future generations, expanding support for innovative companies and funding regional balanced-development projects. The government is expected to confirm the size of the excess tax revenue after releasing a revised tax estimate in September, then begin full-scale discussions on how to allocate the funds.

Kang Kyung-ju, Hankyung.com reporter, qurasoha@hankyung.com