Korean Income Tax for Foreign Workers: Rates, Flat Tax & Year-End Settlement (2026)
By WCS Last reviewed and updated: July 18, 2026 · Checked against official Korean government sources. Key takeaways Korea taxes residents on 8 progressive brackets from 6% to 45%, plus a 10% local surtax, so combined rates run 6.6% up to 49.5% (only the slice in each band is taxed). A foreign employee who meets the statutory conditions may choose Korea's 19% flat method on employment income instead of progressive taxation; the flat method excludes applicable income exemptions, deductions, reductions, and tax credits. For a qualifying foreign worker, the 19% option runs through tax years ending within 20 years of the first Korean work date; the current law has a 2026 start-date window and excludes certain related-company employment, so verify the statute before relying on it. There is no universal income break-even point: the NTS says the better choice depends on each worker's taxable income and available deductions, so compare the flat and progressive methods for your own ...