Year-End Tax Settlement in Korea for Foreign Employees

What the settlement is

Korean employers withhold income tax from every payslip using a simplified withholding table. That table is an estimate — it does not know about your medical spending, your card usage or your dependants.

Year-end settlement (yeonmal jeongsan, 연말정산) is the reconciliation. Early in the year your employer calculates your actual liability for the previous year, compares it with what was withheld, and the difference is refunded or collected — usually in the February payroll.

This is not the same as the May global income tax return. If employment income is your only income and your employer completes the settlement, you generally do not file separately in May.

As a foreign employee you are included in this process the same way a Korean employee is. It is not optional and it is not something you have to request.

What you can claim

Data flows automatically from the Hometax simplified service, which aggregates records from insurers, card companies, hospitals and schools. You log in, download the summary, and give it to your employer.

Commonly claimed items:

• Card and cash receipt spending above a threshold share of salary. Check cards and cash receipts are deducted at a higher rate than credit cards
• National pension and health insurance contributions
• Medical expenses above a threshold
• Education expenses
• Donations
• Personal deductions for dependants
• Housing — monthly rent deduction and mortgage interest, subject to conditions
• Pension savings accounts

Points specific to foreign employees

• Dependants living abroad may be claimable, but require documentation of the relationship and their income, generally apostilled and translated. Plan ahead — this is not a February task
• Monthly rent deduction requires meeting residency and contract conditions; the rent must typically be paid by you under a contract in your name
• Some items are restricted for non-residents, so your residency status for tax purposes matters

Register your cash receipts to your phone number from the start of the year. Retroactively reconstructing a year of cash spending is not possible.

The 19% flat tax option

Foreign employees may elect a flat rate on gross employment income instead of progressive rates. The rate has been 19% plus local income tax.

The trade is straightforward:

• Progressive rates — lower rates on lower income, and you keep all deductions
• Flat rate — one rate on gross income, and you forfeit essentially all deductions and exemptions

Which is better depends almost entirely on income level. At lower salaries the progressive route with deductions usually wins comfortably. At high salaries, where the marginal progressive rate exceeds 19% and deductions are proportionally small, the flat rate can win.

There are conditions on eligibility, including a time limit measured from when you started working in Korea, and rules on related-party employment. The election is made through your employer as part of the settlement.

Run both numbers. The break-even point moves with your deduction profile, and it is not a decision to make on a rule of thumb. If your salary is anywhere near the boundary, this is worth a conversation with a tax professional.

Special situations

Leaving Korea mid-year If you resign and depart, the settlement is done at departure rather than the following February. Ask payroll to complete it before your final pay. Leaving it undone means chasing a refund from abroad, which is difficult.

Changing jobs mid-year Give your previous employer’s withholding tax receipt to your new employer so they can settle your combined income. Skipping this typically leaves you filing in May instead.

More than one income source If you also have business income, rental income or significant financial income, year-end settlement does not cover everything and you file a global income tax return in May.

Getting it wrong If you missed a deduction, you can file a revised return afterwards. There is a window for this, so an omission discovered in April is usually recoverable.

National pension refund On permanent departure, nationals of countries with a social security agreement or reciprocity may claim a lump-sum refund of pension contributions. It is separate from the tax settlement and needs a bank account that is still open — sequence it before closing accounts.