Gift tax, after the deduction
Gift tax is (gift − deduction) × rate − progressive deduction, and filing on time cuts 3% off the result.
The 10-year gift deduction is 600M KRW for a spouse, 50M for an adult lineal relative (20M if a minor), and 10M for other relatives. Rates follow the inheritance/gift schedule of 10% to 50%. As of July 2026 the proposed rate cut and inheritance-acquisition-tax reform did not pass, so current rates remain. The deduction is cumulative over 10 years, so splitting gifts within that window doesn't reset it. See the acquisition tax or capital gains tax calculators.