South Korea Income Tax Calculator 2026
Calculate your Korean taxes: Income Tax + Social Contributions (Pension, Health, Employment Insurance)
~$0
0 KRW
Effective rate: 0%
0 KRW
~9% (employee share)
0 KRW
Monthly: 0 KRW
Income Distribution
Effective total rate: 0%
1. National Income Tax (KRW 8,640,000)
KRW 14,000,000 x 6% = KRW 840,000
(KRW 50,000,000 - 14,000,000) x 15% = KRW 5,400,000
(KRW 60,000,000 - 50,000,000) x 24% = KRW 2,400,000
National Total: KRW 8,640,000
2. Local Income Tax (KRW 864,000)
National tax x 10% = KRW 8,640,000 x 10%
Local Total: KRW 864,000
3. Social Contributions (KRW 5,367,000)
National Pension (4.5%): KRW 2,700,000
Health Insurance (3.545%): KRW 2,127,000
Employment Insurance (0.9%): KRW 540,000
Social Total: KRW 5,367,000
~KRW 3,760,750/month (~$2,750 USD) | Effective total rate: 24.8%
National Pension (NPS)
- Employee rate: 4.5%
- Employer rate: 4.5%
- Monthly cap: KRW 5,900,000
- Retirement age: 65
Health Insurance (NHI)
- Employee rate: 3.545%
- Employer rate: 3.545%
- + Long-term Care: 0.91%
- Universal coverage
Employment Insurance
- Employee rate: 0.9%
- Employer rate: 0.9% - 1.5%
- Varies by company size
- Benefits up to 270 days
Complete Guide to South Korean Taxation
South Korea operates a progressive tax system called Global Income Tax (Jonghap Sodeukse). With 8 tax brackets and an additional local income tax, it's one of the most structured systems in Asia. Social contributions are shared between employer and employee.
Korean Tax Structure 2026
Korean income tax uses a progressive marginal bracket system. Only the portion of income in each bracket is taxed at the corresponding rate:
- KRW 0 - 14,000,000: 6%
- KRW 14,000,000 - 50,000,000: 15%
- KRW 50,000,000 - 88,000,000: 24%
- KRW 88,000,000 - 150,000,000: 35%
- KRW 150,000,000 - 300,000,000: 38%
- KRW 300,000,000 - 500,000,000: 40%
- KRW 500,000,000 - 1,000,000,000: 42%
- Over KRW 1,000,000,000: 45%
National Income Tax
6% - 45%
Progressive system with 8 brackets
Local Income Tax
+10%
of national tax (e.g., 6% becomes 6.6%)
Social Contributions (Employee Share)
| Contribution | Employee Rate | Employer Rate | Description |
|---|---|---|---|
| National Pension (NPS) | 4.5% | 4.5% | Mandatory pension |
| Health Insurance (NHI) | 3.545% | 3.545% | Universal health coverage |
| Long-term Care | 0.91% | 0.91% | Long-term care insurance |
| Employment Insurance | 0.9% | 0.9-1.5% | Unemployment protection |
| Total | ~9.9% | ~9.9% | Employee and employer shares |
Deductions and Tax Credits
Personal Deductions
- Basic deduction: KRW 1,500,000 per person
- Spouse deduction: KRW 1,500,000 if spouse income < KRW 1M
- Dependent deduction: KRW 1,500,000 per dependent
- Additional deductions: for elderly, disabled, single women breadwinners
Employee Tax Credits
- Standard employee credit: Up to KRW 740,000
- Pension contribution credit: 12-15% of contributions
- Insurance premium credit: 12% of premiums (cap KRW 1M)
- Medical expense credit: 15% above 3% of income
- Education credit: 15% of education expenses
Special Card Payment Deduction
- Korea encourages electronic payments to combat tax evasion
- Credit card: 15% deduction
- Debit card/cash: 30% deduction
- Above 25% of annual salary, capped based on income
Key Dates and Filing
- Tax year: January 1 to December 31
- Annual filing: May (1st to 31st)
- Year-end settlement: Employers calculate final tax in February
- Late penalties: 3% + 0.025% per day
Tax Regime for Foreigners
Foreigners working in South Korea have two options:
- Standard progressive rates: 6% to 45% + local tax
- Flat rate option: 19% flat rate for 5 years (attractive for high earners)
The regime choice is made annually. Foreign residents are taxed on worldwide income after 5 years of residence.
France vs South Korea Comparison
| Criteria | France | South Korea |
|---|---|---|
| KRW 60M gross salary (~EUR 40,000) | ~EUR 28,000 net | ~KRW 45M net (~EUR 33,000) |
| Top marginal rate | 45% | 45% + 10% local = 49.5% |
| Employee social contributions | ~22% | ~9.9% |
| Health insurance | Included | Included (NHI) |
| Corporate tax | 25% | 9-24% |
| Foreign regime | No | 19% flat rate (5 years) |
Note: South Korea offers lower social contributions (~10%) compared to France (~22%), but the 10% local income tax on top of national tax increases the burden for high earners. The 19% flat rate for foreigners can be very advantageous.
Key Facts
Tax Year
January - December
Filing Deadline
May 31st
Currency
Korean Won (KRW)
Tax Treaties and the 19% Flat Rate for Foreigners
South Korea offers one of the most attractive tax options for foreign workers through its 19% flat tax rate election. Under Article 18-2 of the Income Tax Act, foreign nationals working in Korea can opt to pay a flat 19% tax on their gross employment income (excluding deductions and credits) instead of the standard progressive rates ranging from 6% to 45% plus local income tax. This election is available for the first five years of employment in Korea starting from the date of first arrival, though recent extensions have expanded this period for workers in certain industries. The flat rate is calculated on total compensation before any deductions, meaning no personal exemptions, tax credits, or itemized deductions are applied. For high earners, this can result in significant savings compared to the progressive system where the top marginal rate reaches 49.5% (45% national + 10% local surtax). However, for lower-income foreign workers, the progressive system with its generous deductions and credits may actually produce a lower tax liability. South Korea maintains double taxation treaties with over 90 countries, including all major Western economies, China, Japan, India, and many Southeast Asian nations. These treaties generally follow the OECD model and provide mechanisms for credit or exemption to prevent double taxation. The local income tax (jibang soduekse) is a flat 10% surcharge calculated on the national income tax amount, which is often overlooked when comparing Korean tax rates internationally.
Unique Aspects of South Korea's Tax System
South Korea's tax system has several features that distinguish it from other OECD economies. The year-end tax settlement (yeonmal jeongsan) is a uniquely Korean process where employers reconcile the tax withheld throughout the year against actual tax liability in January-February. Employees submit documentation for various deductions and credits, and employers calculate whether a refund or additional payment is due. This process, rather than a traditional self-assessment return, is how most salaried workers finalize their taxes. South Korea also heavily incentivizes electronic and card payments through the tax system. Taxpayers can claim a credit card spending deduction of 15-40% on amounts exceeding 25% of their total salary, with different rates for credit cards (15%), debit cards (30%), cash receipts (30%), and traditional market spending (40%). This policy was designed to encourage traceable transactions and combat the shadow economy. The housing subscription savings (jutaek cheongnyak jonghap jeochuk) allows up to KRW 3 million per year in deductible contributions for housing purchases. South Korea applies a unique comprehensive real estate tax (jonghap budongsan se) on individuals whose combined property holdings exceed certain thresholds, with rates from 0.5% to 5% depending on the number and value of properties owned. The National Health Insurance (NHI) system requires contributions of approximately 7.09% of salary split equally between employer and employee, covering comprehensive medical care at relatively low out-of-pocket costs. South Korea also operates a mandatory National Pension (NPS) at 9% of salary (4.5% each from employer and employee), with foreign workers from countries with reciprocal social security agreements potentially exempt from NPS contributions.
South Korea combines progressive taxation with significant social contributions. Compare with high-tech Asian economies.