How Year-end Settlement Works: The Wage Income Tax Calculation Flow

You get a payslip every month, but the calculation logic only needs a once-a-year refresher.

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Year-end settlement reconciles the tax withheld from your pay each month against the tax you actually owe for the year. The calculation runs: (1) gross earnings (annual wage income minus tax-free income) → (2) adjusted wage income (gross earnings minus the wage income deduction) → (3) taxable base (adjusted wage income minus personal deductions, special deductions, and other allowances) → (4) computed tax (taxable base × tax rate) → (5) final tax (computed tax minus tax credits).

If the total already withheld exceeds your final tax, you get a refund; if it falls short, you pay the difference.

What you need for year-end settlement

Hometax simplified year-end data (medical, education, insurance receipts)
Family relationship documents for dependent deductions
Alien registration card / passport copy
Withholding receipt from a previous employer if you changed jobs mid-year

What foreign employees should check first

Non-residents can only claim the basic and additional personal deduction for themselves — not for dependents — and cannot claim most special deductions (aside from health insurance) or the credit-card deduction. Once you become a resident, the same deduction system as Korean employees applies, so confirming your residency status is the real starting point of your year-end settlement.

Frequently Asked Questions

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