Korea Income Tax & Year-End Settlement Guide for Foreigners (2026)
Korea Income Tax for Foreigners at a Glance (2026)
Two Tax Systems — Which Applies to You?
| Progressive Rate (default) | 19% Flat Rate (foreigners only) | |
|---|---|---|
| Who can use it | All taxpayers (default) | Foreign nationals who started work in Korea by 31 Dec 2026 |
| Tax rate | 6%–45% (brackets; + 10% local surtax) | 19% flat (+ 10% local surtax = 20.9% total) |
| Deductions & credits | Full — pension, health, card spending, rent, medical, dependents | None (all deductions forfeited when electing flat rate) |
| Duration | Indefinite | Up to 20 years from first Korean employment start date |
| Generally better when | Annual income below ~₩130M, or you have significant deductions | Annual income above ~₩130M with very few deductions |
Year-End Settlement (연말정산) Timeline
- October–December: Decide flat vs. progressive rate for the year; prepare supporting documents.
- January 15 onwards: Log in to Hometax (hometax.go.kr) → Simplified Service (간소화) → download your pre-compiled deduction summary as PDF.
- Late January: Submit the PDF + any additional proofs to your company's HR or payroll team by their internal deadline.
- February: Your employer calculates the final tax liability, reconciles against monthly withholding, and adjusts your paycheck — refund or top-up.
- March 10: Employer files the withholding summary to the NTS on your behalf.
Sources: NTS (nts.go.kr, 2026 guides) · PwC Korea Tax Summaries 2026 · Jobploy year-end settlement guide 2026
Quick Answer
Most foreign workers in South Korea pay income tax through their employer via monthly withholding, then reconcile in January–February through the annual year-end tax settlement (연말정산, yeon-mal-jeong-san). If you are employed by a Korean company — on an E-2, E-7, F-2, F-5, or most other visas — your employer handles the paperwork and adjusts your February paycheck to reflect any refund or additional amount owed. You are not required to file a separate tax return. As a foreign national, you also have access to a unique option: a 19% flat income tax rate (20.9% with local surtax) instead of the progressive brackets that rise to 45% for high earners. This flat rate is valid for up to 20 years from your first day of employment in Korea — but it comes with a significant tradeoff: you lose all deductions.
This article is for general information only — not tax advice. For your individual situation, confirm with the National Tax Service (NTS), Hometax (hometax.go.kr), or a licensed Korean tax accountant (세무사).
How Does Korea Tax Foreign Workers? Resident vs. Non-Resident
Korea taxes individuals based on residency, not nationality. If you stay in Korea for 183 days or more during a calendar year — or maintain a domicile here — you are treated as a tax resident and taxed on your worldwide income. Most foreign workers on long-term employment visas qualify as residents.
If you are in Korea for fewer than 183 days in a tax year and have no domicile here, you are a non-resident and taxed only on Korean-source income. Employment income for non-residents is generally withheld at the same graduated rates, though other income types (dividends, interest) face a withholding rate of 22% including local surtax — unless a tax treaty with your home country provides a lower rate.
2026 update: A new rule (effective 1 January 2026) extends residency status to anyone who maintains a place of abode in Korea for 183 consecutive days spanning two tax years — even if no single year meets the 183-day threshold on its own. (Source: PwC Korea Tax Summaries 2026)
What Are the Income Tax Rates in Korea?
Korea applies progressive brackets to employment income. Local income surtax (주민세) of 10% is added on top of the national rate. The combined effective rates for 2026 are:
| Taxable Income (KRW) | National Rate | Combined Rate (incl. 10% local surtax) |
|---|---|---|
| Up to ₩14,000,000 | 6% | 6.6% |
| ₩14,000,001 – ₩50,000,000 | 15% | 16.5% |
| ₩50,000,001 – ₩88,000,000 | 24% | 26.4% |
| ₩88,000,001 – ₩150,000,000 | 35% | 38.5% |
| ₩150,000,001 – ₩300,000,000 | 38% | 41.8% |
| ₩300,000,001 – ₩500,000,000 | 40% | 44% |
| ₩500,000,001 – ₩1,000,000,000 | 42% | 46.2% |
| Over ₩1,000,000,000 | 45% | 49.5% |
Sources: PwC Korea Tax Summaries 2026; National Tax Service (NTS). Brackets are applied marginally — only the portion of income within each band is taxed at that rate.
Further reading: Korea Work Expert 2026
The 19% Flat Tax Option: Should You Choose It?
Foreign nationals who began employment in Korea by 31 December 2026 can elect a flat 19% national income tax rate (20.9% total including local surtax) instead of the progressive brackets above. This option was extended from 5 years to 20 years effective 1 January 2023 under the Special Tax Treatment Control Law. (Source: PwC Korea Tax Summaries 2026)
The critical catch: when you elect the flat rate, you forfeit all income deductions and tax credits — including the basic personal exemption (₩1.5M), pension contributions, health insurance deductions, credit card spending deductions, housing rent credits, and medical expense credits. This makes the flat rate generally advantageous only for higher earners with very limited deductions.
As a rough guide (individual results vary significantly — consult a tax professional for your specific situation):
- Annual income below ~₩80M: progressive rate is almost always better. Your deductions reduce taxable income significantly, and the top marginal rate you face is relatively low.
- Annual income ~₩80M–₩130M: almost always progressive unless you have essentially no deductions. Even without deductions, flat does not clearly win until around ₩97M gross — and with typical deductions (pension, health, housing, card spending), progressive continues to win well above that level. Model both systems carefully with your actual deduction profile.
- Annual income above ~₩130M with very few deductions: flat rate may become advantageous. Whether the flat rate saves you money depends heavily on your deduction profile — model both systems for your specific income before electing.
How to elect it: submit the flat tax application to your employer (for monthly withholding or year-end settlement) or to the NTS at the time of filing your annual tax return. You can elect or switch between the two systems at year-end settlement or annual filing — you are not locked in permanently. The 20-year window runs from your first day of work in Korea; track your start date carefully.
What Is Year-End Settlement (연말정산) and Who Participates?
연말정산 (yeon-mal-jeong-san) — literally "year-end adjustment" — is an annual reconciliation run by your employer every January–February. Throughout the year, your company withholds an estimated income tax from each paycheck based on standard tables. The settlement calculates your actual tax liability for the full year, then compares it to what was withheld: if you overpaid, you get a refund; if you underpaid, you pay the difference — both reflected in your February (or early March) paycheck. Koreans often call a refund the "13th month's salary."
Who participates:
- Salaried employees (employed on 31 December) — Your employer runs the settlement on your behalf. You submit documentation; the company does the calculation and filing.
- Mid-year leavers — If you left a job during the year, your former employer should have settled at departure. If not, you can file a May comprehensive income tax return.
- Freelancers and self-employed workers — You do not participate in 연말정산. Instead, file 종합소득세 (comprehensive income tax) by 31 May each year through Hometax.
- Multiple income sources — If you have income beyond your main employment (freelance work, rental income, overseas income), you must file a comprehensive income tax return in May even if your employer also ran year-end settlement for your employment income.
How to Use Hometax and the Simplified Service
Hometax (hometax.go.kr) is the NTS's official online portal for all individual tax matters in Korea. For year-end settlement, its most useful feature is the Simplified Service (연말정산 간소화), which automatically pre-compiles your spending data — medical receipts, insurance payments, credit card spending, pension contributions — from institutions that report to the NTS.
Step-by-step for employees:
- Log in to Hometax from 15 January using simple authentication (Kakao, PASS app, or certificate-based login).
- Go to the 연말정산 section → 간소화 서비스 (Simplified Service).
- Select the relevant tax year and review the automatically collected data for each deduction category.
- Click "Download All at Once (한번에 내려받기)" to save everything as a PDF.
- Submit the PDF to your company's HR or payroll team by their internal deadline (usually late January).
The English-language version of Hometax is limited in functionality. Most of the Simplified Service screens are in Korean only. If you are not comfortable in Korean, the NTS publishes an English-language "Easy Guide for Foreigners' Year-End Tax Settlement" each January — look for it in the NTS English section. The NTS also operates a dedicated foreign taxpayer helpline: 126 (English available) or 1588-0560 (Incheon Airport Taxpayer Service Center).
Key Deductions Foreigners Can Claim (Progressive Rate)
If you opt for the progressive rate — and most lower-to-middle-income foreign workers should — the following deductions and credits are available. All figures are as of the 2025 tax year (settled in early 2026); verify with the NTS for the latest limits.
| Deduction / Credit | Details | Notes |
|---|---|---|
| Employment income deduction | Automatic — graduated percentage of gross employment income | Applied before any other deduction; handled by employer |
| Basic personal exemption | ₩1,500,000 per qualifying person (self, spouse, dependents) | Spouse eligible if their income ≤ ₩1M/year (or ≤ ₩5M if wage-only) |
| National Pension (NPS) | Full employee contribution deductible | Mandatory for most workers on long-term visas |
| Health insurance premiums | Employee portion deductible | Mandatory for residents |
| Credit/debit card spending | Income deduction of 15% of credit-card spend (30% for debit/cash receipts; 40% for traditional markets & transit) on amounts above 25% of salary; basic cap ₩3,000,000/yr (₩2,500,000 if salary above ₩70M) | Cards must be registered in your name in Korea; different rates apply to debit, traditional markets, transit |
| Medical expenses | 15% tax credit on medical expenses exceeding 3% of salary; eligible expenses capped at ₩7,000,000 (cap waived for self, dependents 65+, disabled, children ≤6) | Covers out-of-pocket medical, dental, prescription costs in Korea |
| Monthly rent (월세) deduction | 15–17% tax credit on monthly rent; eligible rent capped at ₩10,000,000/year (max credit ≈₩1.7M); income ceiling ₩80M gross — 17% if income ≤₩55M, 15% for ₩55M–₩80M; no property ownership required | Lease must be registered with NTS (확정일자). Source: Jobploy 2026 guide |
| Insurance premiums | Certain life and accident insurance premiums deductible | Policies must be for Korean residents |
Sources: PwC Korea Tax Summaries 2026; National Tax Service (NTS); Jobploy 2026; KoWork Tax Guide. Deduction limits change annually — always check the official NTS guide for the current tax year.
Common Mistakes Foreigners Make (and How to Avoid Them)
- Missing the HR submission deadline. Each company sets its own internal deadline for collecting settlement documents — typically late January. Missing it means you may not get your deductions reflected until the May comprehensive income tax window. Ask HR for the exact date on your first day back after New Year.
- Not registering your lease for the rent deduction. To claim the monthly rent tax credit, your lease contract must have a 확정일자 (certified date stamp) from the local district office or Hometax. Without it, the credit cannot be applied.
- Claiming a dependent whose income exceeds the threshold. If your spouse or parent earns more than ₩1,000,000 per year (or ₩5,000,000 if wage-income only), they do not qualify as your dependent. Incorrect claims trigger an NTS correction notice and additional tax.
- Assuming the flat rate is always better. The 19% flat rate sounds attractive, but for most E-2 English teachers (income typically ₩24M–₩40M) or junior foreign workers, the progressive rate with deductions results in a lower effective tax. Run the numbers — or ask a 세무사 (tax accountant).
- Forgetting overseas income. If you earned freelance or investment income from outside Korea while living here as a tax resident, that income may be taxable in Korea and needs to be reported in the May comprehensive income tax return.
- Not checking Hometax for uncaptured items. The Simplified Service collects data automatically, but items reported late (some medical or insurance data) may not appear until mid-January. Log in after 20 January to ensure the data is complete before downloading.
Do You Need to File a Separate Tax Return in May?
Most salaried foreign workers whose only income is Korean employment income do not need to file a separate return — their employer completes the process. However, you must file a 종합소득세 (Comprehensive Income Tax) return by 31 May if:
- You are self-employed, a freelancer, or a business owner (not covered by 연말정산).
- You have two or more employers whose combined income has not been settled.
- You have other income beyond employment: rental income, interest or dividend income, business income, or overseas income.
- Your employer failed to run year-end settlement for you (e.g., you left mid-year without a final settlement).
Filing is done through Hometax (hometax.go.kr). Foreign residents can use the NTS English portal or visit a district tax office for assistance.
Frequently Asked Questions
Do foreigners have to pay income tax in Korea?
Yes. Foreign workers who are tax residents of Korea (generally those who stay 183 days or more per year) are subject to Korean income tax on their worldwide income. Non-residents are taxed only on Korean-source income. Most employment income is withheld monthly by the employer and reconciled in the January–February year-end settlement.
What is the 19% flat tax for foreigners, and should I choose it?
Foreign nationals who started employment in Korea by 31 December 2026 can elect a flat 19% national income tax rate (20.9% including local surtax) instead of the progressive brackets. The flat rate is valid for up to 20 years but forfeits all deductions and credits. It is typically only advantageous for high earners — roughly those with annual income above ~₩130M and very few deductions. For workers earning ₩80M–₩130M, progressive almost always wins unless you have essentially no deductions. For most foreign workers earning below ₩80M or those with significant deductions at any income level, the progressive rate results in a lower effective tax burden. Model both systems with your actual deduction profile before deciding.
When is year-end tax settlement (연말정산) done in Korea?
Year-end settlement runs from January to February each year. Employees log into Hometax from 15 January to download their deduction summary, submit documents to their HR team in late January, and receive any refund or pay any additional tax via their February paycheck. The employer files the withholding summary to the NTS by 10 March.
Official Resources
- National Tax Service — English portal (nts.go.kr) — official source for guides, forms, and the annual "Easy Guide for Foreigners' Year-End Tax Settlement" (published each January)
- Hometax (hometax.go.kr) — NTS online filing portal; Simplified Service (간소화) for downloading your deduction summary
- NTS Foreign Taxpayer Helpline: 126 (English available) — for questions on filing, deductions, or flat tax election
- Incheon Airport Taxpayer Service Center: 1588-0560 — in-person and phone support
- PwC Korea Tax Summaries 2026 — independent professional reference for rates and rules
댓글
댓글 쓰기