✓ 2026 tax year rules · for foreign employees in Korea

Your Korean year-end tax refund —
and whether 19% flat tax pays off

Enter your salary to see your expected refund. We calculate the normal progressive tax and the 19% flat rate for foreign employees, and show the lower one.

1Basic information

Salary & cards

Foreign employee flat tax (19%)

Eligible foreign employees can choose 19% of total pay instead of the normal progressive tax. It usually pays off only at high salaries — we compare both automatically.

KRW

Household & family

The year-end settlement PDF from Hometax (in Korean). It is read once in your browser and never uploaded.
Where do I get this PDF?
  1. Log in to Hometax with your alien registration number → 연말정산간소화 (simplified year-end settlement) → view deduction data.
  2. Pick the tax year, open the items, then press 한번에 내려받기 (download all) to save one PDF. The Sontax mobile app has the same menu.
  3. This year’s data opens on January 15. Before that, download last year’s PDF to estimate this year on the assumption that your spending is similar.

Menu names change a little every year. Family members’ data appears only if they have agreed to share it on Hometax.

2More detail + missed deductions

Fill in only what you know. Leave the rest blank.

Tax & insurance paid Estimated from salary if blank

Pension accounts & National Growth Fund Pension accounts are the biggest refund lever — enter if you contribute

Only the dedicated National Growth Fund savings accounts opened on or after May 12, 2026 qualify. Deduction is tiered up to ₩70 million paid in, capped at ₩18 million. Not available if you were subject to comprehensive financial-income taxation in any of the previous 3 years; selling within 3 years generally triggers a 14% clawback on the amount sold (death, emigration, retirement and similar reasons excepted); if you show the tax you actually saved was smaller, only that amount is clawed back. Not available if you choose the 19% flat tax.

Housing

Depending on the loan terms the cap can be as high as ₩20 million. If yours is such a loan, this result understates your deduction.

Medical, education & insurance

Card details & donations

Other personal details

👆 Enter your total salary and press [Calculate my refund]

How it works

How your year-end settlement is calculated

A refund is tax you overpaid, not a bonus

Your employer withholds income tax every month using an official table. In January the tax for the whole year is recalculated with your real deductions. If more was withheld than you owe, you get the difference back — usually with your February or March salary.

Total salary → earned income deduction → other deductions → tax base → tax → credits → final tax

Foreign employees can choose between two methods

The normal method applies 6–45% progressive rates after deductions for family, cards, pension savings, rent and more. The 19% flat rate taxes your whole pay, including non-taxable items like the meal allowance, and allows no deductions at all. You can pick whichever is lower each year. The flat rate usually wins only above a total salary of about ₩165 million — see the flat tax guide.

This calculator assumes you are a tax resident

You are a resident if you have an address in Korea or stay here 183 days or more. Residents are taxed like Korean employees and can claim the same deductions. Non-residents can claim only a few items, so their result will differ.

Trust & scope

Frequently asked questions

Is this the official National Tax Service website?

No. It is a private calculator, not related to Hometax or the National Tax Service. It does not file or claim anything for you. Official filing is done through your employer andHometax.

When is the 19% flat tax rate better?

Usually only at high salaries. With only a ₩2.4 million meal allowance and no other deductions, the flat rate starts to win at a total salary of about ₩165 million. Dependents, pension savings and other deductions push that point higher. The calculator compares both for your numbers.

Do I need to enter personal information?

No. No name, alien registration number or certificate is needed. The amounts you enter are calculatedin your browser only and disappear when you close the page.

Can I use my Hometax PDF?

Yes. Download the year-end settlement PDF from Hometax (it is in Korean) and useFill from Hometax PDF. Cards, medical, education, insurance, pension, housing and donations are filled in automatically. The file is read in your browser and never uploaded. Seehow to download it.

Where can I get official help in English?

The National Tax Service runs an English help line for foreigners (1588-0560) and anEnglish website. Your employer’s payroll team files the settlement, so they are also the first place to ask about documents.

Who made this, and can I trust the numbers?

A developer who builds corporate year-end settlement systems implemented the Income Tax Act and the Special Tax Treatment Control Act, with automated tests checked against hand calculations. It is still an estimate, not tax advice — your final figures are on the withholding receipt from your employer.