Year-end tax settlement calculator

Formula and scope

Apply the shared income tax schedule after earned-income, KRW 1.5 million per eligible person and entered deductions. Deduct the wage tax credit and confirmed credits. Eligible pension savings are capped at KRW 6 million: 15% if salary is at most KRW 55 million, otherwise 12%. Tax less national tax paid gives payment due (positive) or refund (negative).

What this calculator cannot apply

Enter confirmed card deductions, not spending; check eligibility, minimum spending and caps separately. Medical input is the confirmed tax credit, not expense. No automatic document assessment. Dependent age/income tests, IRP/ISA, automatic standard-credit comparison, local-tax settlement, carryforwards, relief and other income are excluded. Do not count amounts twice.

Calculation basis and official sources

• NTS earned-income deduction
• NTS tax credits
• NTS basic tax rates

Sources checked: 8 November 2026 (KST, Asia/Seoul)