Korea Year-End Tax Settlement: How Foreign Workers Get…

Every January, the forms show up.

Most are in Korean. Your coworkers look relaxed, even cheerful. They call it yeonmal jeongsan (연말정산, year-end tax settlement), and some treat it like a small bonus. You, meanwhile, are stuck on a Hometax login screen. You’re not sure which document HR actually wants.

That confusion costs foreign residents real money. Some never claim the parents they support back home. Some pick a tax option because it sounded simpler. Others quit in June and never file at all.

This guide covers 2026 wages, which get settled in early 2027. It applies to E-7 and E-9 workers, F-2, F-5 and F-6 residents, F-4 overseas Koreans, and D-2 or D-10 holders with a paid job. income tax for foreigners in Korea

Why does Korea settle your tax in January, not April?

Korea withholds income tax from every paycheck using a simplified table. That estimate ignores your real spending and family situation. Year-end tax settlement fixes the gap. Your employer recalculates your 2026 tax with your actual deductions. Then it refunds the overpayment or collects the shortfall through your February 2027 pay. Most salaried workers never file a separate return.

Here’s how it works. Under the Income Tax Act, your employer acts as the “withholding agent.” Each month, payroll takes tax based on the National Tax Service simplified withholding table. The table only knows your salary and the dependents you reported. It doesn’t know about your hospital bills, your rent, or your card spending.

So once a year, the numbers get redone.

Who is in, and who isn’t

Your tax residency matters more than your visa type. If you have a home address in Korea, or you’ve lived here 183 days or more, you’re generally a tax resident. Residents can claim the full set of deductions. Non-residents get far fewer.

Daily workers are different. These are people hired by the same employer for less than three months. Their tax is usually final once it’s withheld, so there’s nothing to settle. Many D-2 students on short shifts fall into this group. Check the label on your pay slip before you chase a refund.

But there’s a bigger decision to make before you gather a single receipt. It can cancel out every deduction you collect.

The 19% flat rate: shortcut or trap?

Foreign workers can choose a single 19% income tax rate on their total wages. This replaces Korea’s progressive rates of 6% to 45%. Add the 10% local income tax and the real rate becomes 20.9%. The catch is strict. You give up every deduction and tax credit. It tends to help high earners with few expenses and hurt mid-income workers with families.

The foreign worker flat tax rate option comes from the Restriction of Special Taxation Act. You can read the English statute through MOLEG.

Restriction of Special Taxation Act, Article 18-2 (summary): A foreign worker who starts working in Korea may choose to have wage income taxed at a single rate of 19%, in place of the regular rates under the Income Tax Act. Deductions, exemptions and tax credits do not apply when this option is used.

Here’s the catch. Under the flat rate, “total wages” generally includes allowances that are normally tax-free, such as monthly meal money. Under the progressive system, those stay outside the tax base. So the flat rate can tax money you never expected to be taxed.

The option is also time-limited. It covers wages earned within a set period from your first day of work in Korea (currently up to 20 years). The law also carries a sunset date that the government reviews in its annual tax reform. Confirm the current window in the NTS English guide for foreign workers each year.

Who usually comes out ahead

These are example profiles, not rules:

• Likely to benefit: a single E-7 professional on a high salary, with modest card spending and no dependents.
• Likely to lose: an F-6 marriage migrant on a mid-range salary with two children, medical bills, and dependents to claim.
• Worth comparing: an F-2 or F-5 resident with a high salary but several dependents abroad.

Why the split? After deductions, Korea’s effective tax rate on a mid-range salary is usually well below 19%. The flat rate only pulls ahead when your income is high and your deductions are thin.

How to choose it

Tell your employer you want the flat rate. Then submit the single tax rate application form together with your year-end documents. You can also choose it when you file yourself in May. The best move is simple. Ask payroll to calculate both ways before you decide.

Stick with progressive rates, and your paperwork becomes your refund. So what goes in the pile?

The paperwork that quietly turns into cash

Most of your required documents come from Hometax automatically. That includes insurance premiums, medical bills, tuition, and card spending. Around January 15, you download one PDF from the Simplified Year-End Tax Settlement Service and give it to your employer. Then you add what Hometax can’t see: dependents abroad, rent proof, and a previous employer’s withholding receipt.

To log in, you’ll use the foreign registration number on your ARC (Alien Registration Card). Hometax accepts financial certificates and several simple-authentication apps. The mobile version of Hometax is called Sontax. digital certificate for foreigners in Korea

The core required documents

1. Hometax simplified PDF. It covers National Health Insurance and National Pension contributions, private insurance, medical costs, education costs, and card or cash-receipt spending. You can double-check premium history with NHIS.
2. Income and tax credit declaration form (sodeuk seaek gongje singoseo). HR usually provides it, often inside the payroll system.
3. Proof of family abroad. A family relationship certificate from your home country, with a Korean translation. Some employers also ask for remittance records.
4. Monthly rent proof, if you claim the rent credit. That means the lease contract, transfer records, and a registered address that matches the lease.
5. Donation receipts from groups that don’t report to Hometax.
6. Previous employer’s withholding receipt, if you changed jobs in 2026.
7. Flat rate application, only if you choose the 19% option.

The numbers behind your refund

• Each qualifying dependent adds a basic deduction of 1.5 million won.
• A dependent’s own annual income must be 1 million won or less (5 million won if it’s wage income only).
• Parents must be 60 or older. Children must be 20 or younger.
• Card spending counts only above 25% of your gross salary. Credit cards earn 15%. Debit cards and cash receipts earn 30%.
• Medical costs count only above 3% of your gross salary.

Here’s what happens most often. Foreign workers hand in the Hometax PDF and stop there. The parents abroad never get claimed. That’s often the single biggest deduction left on the table.

Hand everything in by the company deadline. Then the waiting starts, and the payout date surprises many people.

When does the refund actually land?

Your refund normally arrives inside your February salary. It isn’t a separate transfer from the NTS. Depending on your company’s payday, that means late February or March. If the settlement shows you owe more than 100,000 won, you can usually ask to split the extra tax across your February, March, and April pay. Your employer reports everything by March 10.

Check your February pay slip. Look for the income tax and local income tax lines. A refund shows up as a negative number there. After March 10, you can download your final withholding receipt from Hometax and confirm the totals.

Why would anyone owe money? A few reasons come up again and again:

• You chose to have only 80% of the table amount withheld each month. Workers can pick 80%, 100%, or 120%.
• You had two jobs, and each employer withheld as if it were your only income.
• You claimed a dependent that a relative also claimed.

Owing isn’t a penalty. It’s just the tax you would have paid anyway, collected later.

The refund timing is different if you file yourself in May. In that case, the NTS pays the income tax refund directly to your registered bank account, usually by late June. The local income tax refund comes separately from your local government.

All of that assumes one employer, January to December. What if your year didn’t look like that?

Quit or changed jobs mid-year? Here’s who files

When you leave a job, your employer settles your tax on the final paycheck. But it only applies basic deductions. If you join a new company before December 31, hand over your previous withholding receipt. Your new employer then settles the whole year. If you stay unemployed through year-end, you file yourself in May. Leaving Korea permanently triggers settlement before departure.

You switched employers

Get the withholding receipt (geunro sodeuk wonchon jingsu yeongsujeung) from your former employer. Give it to your new employer during the January settlement. Skip this step, and only your new salary gets settled. The NTS later combines both incomes and may bill you for the difference.

Changing employers on an E-7 also involves a report to immigration through HiKorea. That’s a separate process from taxes. Don’t assume one covers the other.

You resigned and didn’t work again

This is the resigned mid-year filing case. Your former employer’s settlement used only basic items. Your card spending, medical costs, and rent never got counted. That’s money waiting for you in May.

You’re leaving Korea for good

A foreign worker leaving permanently settles with the employer before departure. Planning to be gone by May? You can appoint a tax agent, a person in Korea who handles your filing, and report them to the tax office. Taxes are only one part of leaving, though. National Pension lump-sum refund for foreigners

Missed both the employer settlement and the departure check? The door isn’t closed. It just moves to May.

Missed it? Why May is your second chance (and not your last)

If you skipped deductions or never got settled, file a comprehensive income tax return from May 1 to May 31, 2027 on Hometax. Refunds usually arrive by late June. Missed May too? A request for correction lets you claim overlooked deductions for up to five years after the original filing deadline. A correction that only asks for money back carries no penalty.

The May tax return if missed is called jonghap sodeukse (종합소득세, comprehensive income tax) filing. The steps are straightforward:

1. Log in to Hometax or Sontax with your foreign registration number.
2. Open the comprehensive income tax filing menu.
3. Load your wage data. It becomes available after employers file by March 10.
4. Add the deductions your employer never applied.
5. Enter your Korean bank account for the refund and submit.
6. Complete the linked local income tax filing.

Need proof of your registered address for the rent credit? You can issue a certificate of foreigner registration facts through Government24. monthly rent tax credit for foreigners

Missed May entirely? Use a request for correction (gyeongjeong cheonggu, 경정청구). For 2026 income, the May deadline is May 31, 2027. So you can request a correction until May 31, 2032. It’s filed on Hometax, too.

Stuck on a screen? The NTS call center at 126 offers foreign-language support. The National Tax Service also publishes an English year-end settlement guide for foreign workers each year.

Your three moves this season

1. In late November, run the Hometax preview. Ask HR whether the 19% flat rate beats progressive rates for you.
2. Before January 15, collect what Hometax can’t see: home-country family certificates, translations, and your rent contract.
3. Changed jobs, quit, or forgot something? Put May 2027 on your calendar now.