How South Korea income tax works
South Korea uses a progressive income tax with a top rate of 45.00%. Only the income inside each band is taxed at that band's rate.
National income tax of 6%–45%, plus a local income tax of 10% of that amount.
Because of the bands, your effective rate — total tax divided by income — is always lower than your top marginal rate.
Take-home pay in South Korea
Your take-home is income minus income tax. This calculator shows that figure, but bear in mind social-security or national-insurance contributions are usually deducted separately and are not included here.
Tax credits, allowances and reliefs can also lower the amount you actually pay, so treat this as a baseline estimate.
What this does not include
This estimate covers South Korea income tax only. Social contributions, surcharges, local taxes and personal credits can move your real bill up or down.
Treat it as a planning figure and verify with the National Tax Service (nts.go.kr) or a local tax adviser.
Frequently asked questions
How much income tax will I pay in South Korea?
It depends on your income and the progressive bands, which top out at 45.00%. Enter your income above for an estimate.
What is the difference between effective and marginal rate?
Your marginal rate is the rate on your next unit of income; your effective rate is total tax divided by total income, which is lower because of the lower bands.
Does this include social security?
No. Social-security or national-insurance contributions are deducted separately and are not included in this income tax estimate.
Are there tax-free allowances in South Korea?
National income tax of 6%–45%, plus a local income tax of 10% of that amount.