Estimate only — not tax advice. Social insurance uses 2026 employee rates (Pension 4.5% up to the income ceiling, Health 3.595% + Long-term Care 12.95% of health, Employment 0.9%). Income tax is an approximation of year-end settlement (earned-income deduction, basic deductions, progressive brackets, earned-income tax credit, +10% local). The foreigner flat-tax option applies 19% (+1.9% local) to gross with no other deductions/credits. Confirm with the National Tax Service (nts.go.kr) / your employer. By WCS.