Income Tax Calculator
Calculate Korean comprehensive income tax instantly using the latest 2026 rates and deductions. Ideal for self-employed and freelancers filing in May.
Sum of employment, business, interest, dividend, pension, and other income (e.g. 30,000,000)
Spouse, parents aged 60+, children aged 20 or under, etc. Include children here if they are claimed as dependents.
Used to identify eligible children for the child tax credit
1 child: ₩250K / 2 children: ₩550K / 3+ children: +₩400K each
Tax Due
No tax due
- Total Income
- 1,500,000KRW
- Personal Deduction
- 1,500,000KRW
- Taxable Base
- 0KRW
- Tax Rate Applied
- 0%
- Calculated Tax
- 0KRW
- Total Tax Credits
- 0KRW
- Determined Tax
- 0KRW
- Voluntary Filing Deduction
- 0KRW
- Local Income Tax (10%)
- 0KRW
- Effective Rate
- 0.00%
- Amount is within the deduction limit — no tax due.
What is Korean Comprehensive Income Tax?
Korean comprehensive income tax combines employment, business, interest, dividend, pension, and other income into a single annual tax return. Self-employed individuals and freelancers must file between May 1 and May 31 each year. The 2026 progressive tax rates range from 6% to 45% across 8 brackets, with personal deductions, child tax credits, and standard tax credits available to reduce your liability.
Deduction & Rate Limits (2026)
| Item | Details |
|---|---|
| Personal deduction (self) | 1,500,000 KRW |
| Per dependent | 1,500,000 KRW |
| Child tax credit (1 child) | 250,000 KRW |
| Child tax credit (2 children, cumulative) | 550,000 KRW |
| Child tax credit (3+ children, per additional) | 400,000 KRW |
| Standard tax credit | 130,000 KRW |
| Voluntary filing deduction | 3% (of determined tax) |
| Local income tax | 10% (of national tax) |
Frequently Asked Questions
- Who is required to file a comprehensive income tax return?
- Anyone with income beyond employment income — such as business income, interest, dividends, rental income, pension, or other income — must file between May 1 and May 31. This primarily applies to self-employed individuals, freelancers, and rental property owners.
- How does the child tax credit work?
- For children aged 8 or older, the credit is ₩250,000 for 1 child, ₩550,000 for 2 children, and an additional ₩400,000 per child from the 3rd onward (effective 2026.04.21). Tax credits are subtracted directly from your calculated tax, making them more valuable than income deductions.
- Should I choose the standard tax credit or itemized special deductions?
- The standard tax credit gives you a flat ₩130,000 deduction. If your total special deductions (medical, education, donations, insurance premiums) exceed ₩130,000, itemized deductions may be more beneficial. This calculator currently supports only the standard tax credit.
- Can I use this result for tax filing?
- This calculator is for reference only. Business expense deductions, national pension and health insurance premiums, special tax credits, and additional deductions (age 70+, disability, single-parent) are not included. Please consult a certified tax accountant or the Korean National Tax Service before filing.
This calculator is for informational purposes only. Business expense deductions, national pension and health insurance premiums, special tax credits (medical, education, donations, credit cards), and additional deductions (age 70+, disability, single-parent) are not included. Please consult a qualified tax professional for an accurate calculation.