South Korea Income Tax Calculator 2026
Calculate your exact net salary in South Korea after Sodeuk-se — Global Income Tax and social security. All 7 tax brackets. Updated Q1 2026.
Your employer pays an additional ₩4,525 (9.0% of gross). Total employment cost = ₩54,525.
How income tax works in South Korea
Income tax in South Korea is administered by the National Tax Service (NTS) under Sodeuk-se — Global Income Tax. Local income tax adds 10% of income tax payable. National Pension/Health: 4.5% / ~3.5% employee each. Brackets in KRW.
South Korea uses a progressive schedule of 7 brackets: each slice of income is taxed at the rate of the band it falls in — not your highest rate applied to the whole salary. Social security (9.0% of gross) is deducted first; income tax is then applied to the remainder band-by-band.
South Korea pays salaries across 12 monthly instalments.
Key tax dates in South Korea
| Event | Date / Note |
|---|---|
| Tax year start | 1 January |
| Tax year end | 31 December |
| Filing deadline | 31 May |
| Withholding regime | Sodeuk-se — Global Income Tax |
Deductions and allowances
- ·Employment income deduction (70–2% sliding scale)
- ·Basic deduction KRW 1,500,000
- ·National Pension contributions
- ·Health insurance
- ·Mortgage interest
- ·Card spending deduction
Local income tax adds 10% of income tax payable. National Pension/Health: 4.5% / ~3.5% employee each. Brackets in KRW.
Special tax regimes
Foreign worker flat tax: expats may choose 19% flat rate on employment income for first 20 years.
Read full guide →All 7 brackets for 2026
| # | Income Range (₩) | Marginal | Effective at Top |
|---|---|---|---|
| 01 | ₩0 — ₩14,000,000 | 6% | 14.5% |
| 02 | ₩14,000,000 — ₩50,000,000 | 15% | 20.1% |
| 03 | ₩50,000,000 — ₩88,000,000 | 24% | 24.3% |
| 04 | ₩88,000,000 — ₩150,000,000 | 35% | 30.6% |
| 05 | ₩150,000,000 — ₩300,000,000 | 38% | 36.9% |
| 06 | ₩300,000,000 — ₩500,000,000 | 40% | 40.2% |
| 07 | ₩500,000,000 — ∞ | 45% | — |
Source · National Tax Service (NTS) · Data updated Q1 2026
Frequently asked
What is the income tax rate in South Korea?+
South Korea applies progressive Sodeuk-se — Global Income Tax rates from 6.0% on the lowest band up to 45.0% on the highest, across 7 brackets in 2026.
How much social security do you pay in South Korea?+
Employees pay 9.0% of gross salary as social security. Local income tax adds 10% of income tax payable. National Pension/Health: 4.5% / ~3.5% employee each. Brackets in KRW.
What is the Sodeuk-se — Global Income Tax personal allowance in South Korea?+
The main allowances are: Employment income deduction (70–2% sliding scale); Basic deduction KRW 1,500,000. See §03 for the full list.
When do you file taxes in South Korea?+
The filing deadline in South Korea is 31 May. Tax year runs 1 January to 31 December.
How much take-home pay on ₩45,000,000 gross in South Korea?+
On a ₩45,000,000 gross salary the effective rate is 19.9%, leaving approximately ₩36,067,500 net per year — about ₩3,005,625 per month across 12 payments. (For reference: ₩50,000 gross nets ₩42,770.)
Does South Korea have any special tax regimes for expats?+
Foreign worker flat tax: expats may choose 19% flat rate on employment income for first 20 years.
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