Income Tax Calculator - 2025 Korean Tax Simulation
Calculate Korean comprehensive income tax by combining employment, business, interest, dividend, and pension income. Based on 2025 tax law.
Calculation Notes
- • Based on 2025 Korean income tax rates
- • Interest/dividend income under 20M KRW is separately taxed
- • Other income under 3M KRW can be separately taxed
- • Employment tax credit applies only with employment income
- • Results are for reference only and may differ from actual filing
Other Calculators
What is Comprehensive Income Tax?
Comprehensive income tax is a tax levied on an individual's total income from various sources (employment, business, interest, dividends, pensions, and other income) earned during the year. In South Korea, taxpayers file and pay for the previous year's income every May.
Who Must File
- Individuals with business income (freelancers, self-employed)
- Salaried workers with additional income beyond employment
- Those with financial income (interest + dividends) exceeding 20 million KRW per year
- Workers who did not complete year-end tax settlement
- Those with pension income exceeding 12 million KRW per year
2025 Tax Rate Table
| Taxable Income | Rate | Progressive Deduction |
|---|---|---|
| Up to 14M KRW | 6% | - |
| 14M ~ 50M KRW | 15% | 1.26M KRW |
| 50M ~ 88M KRW | 24% | 5.76M KRW |
| 88M ~ 150M KRW | 35% | 15.44M KRW |
| 150M ~ 300M KRW | 38% | 19.94M KRW |
| 300M ~ 500M KRW | 40% | 25.94M KRW |
| 500M ~ 1B KRW | 42% | 35.94M KRW |
| Over 1B KRW | 45% | 65.94M KRW |
Tax Calculation Flow
- Total Revenue: Sum up revenue from each income category
- Deduct Expenses: Subtract necessary expenses to get income amount
- Income Deductions: Apply personal exemptions, national pension, health insurance deductions
- Taxable Income: Comprehensive income - income deductions
- Calculated Tax: Apply tax rates to taxable income
- Tax Credits: Subtract child tax credit, pension savings credit, etc.
- Tax Payable: Calculated tax - tax credits - prepaid tax (withholding, etc.)
