Korea tax guide
Korea Income Tax Filing Guide for Foreigners
Income Tax
Who this guide is for
- Foreigners with Korean salary income
- Freelancers with 3.3% withholding
- People who changed jobs or had more than one payer
- Expats who need income records for another process
Quick Answer
Foreigners may need to review Korean income tax filing when they have freelance income, business income, multiple employers, unadjusted salary income, or other reportable income. Many employees finish most tax adjustment through their employer, but that does not always cover every case. Filing decisions should be checked against current National Tax Service guidance.
Key points
- Global Income Tax filing may be relevant when employer settlement is not enough.
- Hometax is the main online filing and certificate portal.
- A refund is possible in some cases but is never guaranteed.
- Keep records before trying to file or request documents.
Step-by-step explanation
How do foreigners file taxes in Korea?
The filing path begins with your income type. Salary income is often withheld monthly and adjusted through employer year-end settlement. Freelance or business-type income may be withheld differently and may need annual review. If you changed employers, worked for more than one payer, earned outside income, or received Korean-source income without a complete employer adjustment, you should slow down and check the correct route.
Hometax is the main online system, but the system does not replace judgment. It may show reported income, payment records, certificates, and filing menus, but you still need to understand whether the information is complete. If Korean language screens are difficult, prepare the English meaning of key terms through the glossary before starting.
What should you check before filing?
Make a simple income map for the year. List each payer, the type of work, the period worked, whether tax was withheld, and whether you received a certificate or statement. For salary income, ask whether year-end settlement was completed. For freelance income, check whether 3.3% withholding appears on records. For business income, review whether business registration or expense records exist.
| Check | Why it matters |
|---|---|
| Income type | Different income categories can use different reporting methods |
| Withholding | Tax already withheld may affect final payment or refund |
| Employer settlement | It may reduce or replace separate filing for some salary-only employees |
| Residency | It may affect the scope of income and treaty questions |
| Documents | Missing records can delay filing or certificate requests |
What are the common filing paths?
An employee with one employer may start with year-end settlement. A freelancer may start with annual income tax filing and refund status checks. A person who needs a visa document may start by getting a certificate of income, then review whether the certificate reflects the expected income. A person with overseas income, treaty questions, or a long stay in Korea should review tax residency before making assumptions.
Use the Hometax filing procedure for a general sequence. Menu names may change, and official NTS guidance should always control over any third-party guide.
Documents you may need
- Income withholding receipts
- Employer year-end settlement documents
- Freelance payment statements
- Hometax authentication method
- Bank account details for refund checks when applicable
Common mistakes
- Waiting until the filing period without Hometax access
- Assuming 3.3% withholding means the process is finished
- Mixing immigration document needs with tax filing needs
- Entering information without checking payer records
When should you ask a tax professional?
Ask a qualified tax professional if you have income from several countries, business income, unclear tax residency, treaty questions, missing documents, late filing concerns, or a visa situation that depends on tax records. This site explains general patterns only and cannot review your personal facts.
FAQ
Do employees need to file separately?
Many employees use employer year-end settlement, but separate filing may be relevant if there is other income or incomplete adjustment.
Can filing create a refund?
A refund may happen in some situations, but it depends on withheld tax, deductions, income type, and final calculation.
Can foreigners use Hometax?
Many foreigners can use Hometax if identity verification and login setup are available.
Should I file if I left Korea?
Departure can affect timing and documents, so check official guidance or ask a professional before leaving if possible.
Official Sources to Verify
Tax rules and filing procedures in Korea may change depending on your visa status, income type, tax residency, and the tax year. Before making a tax decision, always verify your situation with official sources or a qualified professional.