Income Tax Rates in Korea: Brackets, Local Tax and What You Actually Pay

Published August 2, 2026

How the brackets actually apply

Korea taxes income on a progressive schedule. The most common misunderstanding is thinking that crossing into a higher band taxes all your income at that rate.

It does not. Each band applies only to the income within it. If a band boundary sits at 50 million won, income up to that point is taxed at the lower rate and only the amount above it at the higher one.

The practical consequence: a raise never reduces your take-home pay. Crossing a bracket boundary increases the tax on the new money only.

The schedule runs from a low single-digit rate at the bottom to the mid-forties at the top, across several bands. The exact boundaries and rates are set by tax law and adjusted periodically, so check the current table on Hometax rather than relying on figures from an older article.

Korean tax practice expresses each band with a progressive deduction figure, which is a shorthand for computing the same result in one line rather than band by band.

Your effective rate is much lower

The rate that matters is your effective rate — total tax divided by total income — not your top bracket.

The gap comes from what is subtracted before the rates apply:

Employment income deduction — a substantial reduction applied to salary before anything else, larger in proportional terms at lower incomes
Personal deductions — for yourself and qualifying dependants
Social insurance contributions — national pension, health insurance and employment insurance are deductible
Other deductions — card spending above a threshold, medical and education expenses, pension savings, housing

Then tax credits reduce the calculated tax itself, including the earned income tax credit and child credits.

Because of these layers, a salaried employee in a middle band commonly ends up with an effective rate in the high single digits or low teens. This is why the 19% flat tax available to foreign employees is not automatically attractive — for many salaries the progressive route with deductions produces a lower bill.

Local income tax and other layers

Local income tax An additional 10% of your income tax — not 10% of income. If your income tax is 3 million won, local income tax is 300,000 won. It goes to your local government rather than the national treasury and is filed through Wetax, separately from Hometax, though for employees it is handled in payroll alongside the main tax.

Social insurance is the bigger deduction at lower salaries Comparing countries or offers on income tax rate alone is misleading in Korea, because four contributions come out before you see the money:

National pension
Health insurance, plus long-term care insurance calculated on it
Employment insurance

(Industrial accident insurance is paid entirely by the employer.)

At lower and middle salaries these contributions typically exceed the income tax itself. Any calculation of take-home pay that stops at income tax will be materially wrong.

Withholding versus final liability Monthly withholding uses a simplified table. Your actual liability is settled at year-end settlement in February, and the difference is refunded or collected then.

What this means for foreign employees

Residency status determines scope. Residents are taxed on worldwide income; non-residents on Korean-source income only. Residency turns on having an address in Korea or staying 183 days or more, assessed alongside where your family and assets are.

The flat tax comparison. Foreign employees may elect a flat rate on gross employment income instead of progressive rates, forfeiting essentially all deductions. Run both numbers — the break-even depends on your salary and your deduction profile, not on a rule of thumb.

Tax treaties determine which country taxes what where you have income in two places, and a foreign tax credit relieves double taxation.

Practical steps

Register cash receipts to your phone number from the start of the year — the card and cash spending deduction is one of the larger everyday items
Keep withholding tax receipts from every employer
If you have income beyond salary, expect to file a global income tax return in May
Check your effective rate rather than reacting to your bracket

Hometax provides calculators that apply the current year’s table, which is more reliable than working from a published rate list.

Frequently asked questions

If I get a raise into a higher bracket, do I take home less?

No. Progressive taxation applies the higher rate only to income above the boundary. A raise always increases take-home pay, though the additional amount is taxed at the higher rate.

Is the 10% local income tax on top of my salary?

It is 10% of your income tax, not of your income. If your income tax is 3 million won, local income tax is 300,000 won.

Why is my payslip deduction so much larger than the tax rate suggests?

Social insurance contributions — national pension, health insurance with long-term care, and employment insurance — come out alongside tax. At lower and middle salaries these typically exceed the income tax itself.

Should I take the 19% flat rate instead?

It depends on your salary and deductions, because the flat rate forfeits essentially all of them. Effective rates under the progressive schedule are usually well below the top bracket, so calculate both before electing.