Who Korea Can Tax: Residency, Taxing Rights, and Why Your Passport Doesn't Decide

거주자·비거주자 판정과 대한민국의 과세권 — 외국인 세무의 출발점

 

1. Question

"I'm a foreign national living and working in Korea. Friends keep telling me different things. One says foreigners don't pay Korean tax on money earned abroad. Another says I have to report everything once I've been here long enough. My parents are also thinking of giving me money from home, and I own an apartment in Korea. Before I worry about specific taxes, I'd like to understand the basics: what exactly can Korea tax me on, and does my nationality matter at all?"

 

📌 The short answer

Korea's power to tax you turns on whether you are a "resident" (거주자) under Korean tax law, not on your nationality. Residency is judged by where you actually live and work, using tests set out in statute.

Resident status is not one single status that applies across all taxes. Income tax, inheritance and gift tax, capital gains tax and VAT each draw the line differently, and one of them does not use residency at all.

Whose status is tested also changes by tax. For inheritance tax it is the deceased; for gift tax it is the recipient; for income tax it is you.

The detailed grounds and decision criteria follow below.

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2. Facts and Issues

A. Status cited in this post

Abbreviation	Statute (English)	Statute (Korean)
ITA	Income Tax Act	소득세법
ITA Decree	Enforcement Decree of the Income Tax Act	소득세법 시행령
IGTA	Inheritance Tax and Gift Tax Act	상속세 및 증여세법
IGTA Decree	Enforcement Decree of the Inheritance Tax and Gift Tax Act	상속세 및 증여세법 시행령
VATA	Value-Added Tax Act	부가가치세법

"Art." refers to an article (조) of the statute; numbers in parentheses refer to paragraphs (항) and subparagraphs (호). 

B. Summary of facts

This post is written for foreign nationals connected to Korea in any of the following ways, and for the Korean companies and family members dealing with them:

• living and working in Korea under a work visa, or seconded here by an overseas employer
• holding property, financial accounts or a business in Korea while living abroad
• receiving, or expecting to receive, gifts or an inheritance across borders

Before any specific filing question can be answered, three preliminary questions have to be settled: whether you are a resident, what Korea may tax as a result, and which tax you are actually dealing with.

C. Issues

• Issue ① How is resident or non-resident status determined?
• Issue ② What is the scope of Korea's taxing rights over a resident and over a non-resident?
• Issue ③ How does the resident/non-resident divide translate into actual tax liability?
• Issue ④ How does that divide differ by tax type?
• Issue ⑤ What role, if any, does nationality play?

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3. Relevant Provisions by Issue

If you are not interested in the statutory text, feel free to skip this section and go straight to 4. Tax Analysis.

In this post, "ITA" means the Income Tax Act (소득세법), "ITA Decree" means its Enforcement Decree, "IGTA" means the Inheritance Tax and Gift Tax Act (상속세 및 증여세법), "IGTA Decree" means its Enforcement Decree, and "VATA" means the Value-Added Tax Act (부가가치세법).

 

A. Determining residency (Issue ①) 

Provision	Contents
ITA Art. 1-2(1)1·2	A "resident" is an individual with a domicile (주소) in Korea, or with a residence (거소) in Korea for 183 days or more. A "non-resident" is any individual who is not a resident.
ITA Decree Art. 2(1)·(2)	Domicile is determined by objective facts of living, such as family sharing a household in Korea and assets located in Korea. A residence is a place other than a domicile where one stays for a considerable period without forming equally close ties.
ITA Decree Art. 2(3)1·2	A person living in Korea is deemed to have a domicile here if their occupation normally requires them to live in Korea continuously for 183 days or more, or if they have family sharing a household here and are expected, given occupation and assets, to live in Korea continuously for 183 days or more.
ITA Decree Art. 2(4)	A person living or working abroad who holds foreign nationality or permanent residence, has no family sharing a household in Korea, and is not expected to return and live mainly in Korea, is treated as having no domicile in Korea.
ITA Decree Art. 2-2(1)·(2)	Residency begins on the day a domicile is established or deemed established, or the day the 183-day count is reached. It ends on the day after departure to move one's domicile or residence abroad.
ITA Decree Art. 4(1)·(3)	The residence period runs from the day after entry to the day of departure. The 183-day test is met within one tax year, or continuously across two tax years.
IGTA Art. 2(8); IGTA Decree Art. 2(1)·(2)	The IGTA defines "resident" separately, in wording parallel to the ITA, and refers the determination back to the ITA Decree. It adds that a non-resident who returns to Korea to settle permanently and dies here is treated as a resident.

 

B. Scope of taxing rights (Issues ② and ④) 

Provision	Content
ITA Art. 2(1)1·2	Income tax is payable by residents, and by non-residents with Korean-source income.
ITA Art. 3(1)	Residents are taxed on all income. For a foreign resident whose total domicile or residence in Korea over the past 10 years is 5 years or less, foreign-source income is taxed only to the extent paid in Korea or remitted to Korea.
ITA Art. 3(2), Art. 119	Non-residents are taxed only on Korean-source income as listed in Art. 119.
IGTA Art. 3	If the deceased was a resident, all inherited property is taxable. If the deceased was a non-resident, only property located in Korea is taxable.
IGTA Art. 4-2(1)1·2	If the recipient is a resident, all gifted property is taxable. If the recipient is a non-resident, only gifted property located in Korea is taxable.
ITA Art. 88(6), Art. 89(1)3	The one-house exemption from capital gains tax is granted to "one household", which is defined by reference to a resident and their spouse.
ITA Art. 121(2) proviso; ITA Decree Art. 180-2(1)	For non-residents with Korean-source gains on real estate, the one-house exemption in Art. 89(1)3·4 does not apply, except for non-residents meeting ITA Decree Art. 154(1)2(b) or (c).
ITA Decree Art. 154(1)2(b)·(c)	Those exceptions are emigration under the Emigration Act, and departure of the whole household for study or work requiring at least one year abroad. In each case, one house held at departure and sold within two years of departure.
VATA Art. 2(3), Art. 3(1), Art. 4	VAT is payable by a "business operator" — anyone supplying goods or services independently in the course of business, whether for profit or not — and by importers. The taxable events are supplies by a business operator and imports.
VATA Art. 6(1)·(3)	The place of VAT taxation is each place of business. If there is none, the operator's domicile or residence is treated as the place of business.
VATA Art. 52(1)1·2	Where services or rights are supplied in Korea by a non-resident or foreign corporation without a Korean permanent establishment, the Korean recipient (outside taxable-business use) withholds and pays the VAT (the reverse-charge rule).

 

C. Deductions that depend on residency (Issue ④)

Provision	Available To
IGTA Art. 18 (basic deduction, KRW 200 million)	Estates of both residents and non-residents
IGTA Arts. 19, 20, 21, 22, 23, 23-2 (spouse deduction, other personal deductions, lump-sum deduction of KRW 500 million, financial asset deduction, disaster loss, cohabiting-house deduction)	Estates of residents only ("where inheritance commences upon the death of a resident")
IGTA Art. 53 (gift deductions: KRW 600 million from a spouse, KRW 50 million from a lineal ascendant, etc.)	Residents only ("where a resident receives a gift from…")

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4. Tax Analysis

Key terms

• Resident (거주자) / non-resident (비거주자): tax-law status based on where you actually live, not an immigration status and not nationality.
• Domicile (주소) / residence (거소): domicile is the centre of your living relationships; residence is a place you stay for a considerable time without those close ties.
• Korean-source income (국내원천소득): income treated as arising in Korea, such as pay for work performed here or rent from Korean property.
• Situs (재산 소재지): where property is located, which decides the scope of inheritance and gift tax for non-residents.

Case A. Mr. J, a foreign national, moved to Korea two years ago on a three-year employment contract. His spouse and children live with him in Seoul. He owns a flat in his home country that he rents out, and he keeps the rent in an overseas account.
→ Direction: He is very likely a resident. His Korean salary is fully taxable. His foreign rent falls under the 5-year rule, so it is taxable only to the extent paid in or remitted to Korea.

 

Case B. Ms. P, a foreign national, has lived abroad for years and has no family in Korea. She owns a Seoul apartment that she rents out, and her mother in Korea is planning to give her money.
→ Direction: She is very likely a non-resident. Korea taxes her Korean rental income, but not her foreign income. For gift tax, her non-resident status means only Korean-situs property is taxable — and no gift deduction under IGTA Art. 53 is available to her.

A. Residency is a factual test, not a paperwork test (Issue ①)

Korean tax law gives two routes to resident status: having a domicile in Korea, or having a residence here for 183 days or more (ITA Art. 1-2(1)1).

The domicile route is decided on objective facts — whether your family shares a household here, where your assets are, and the nature of your work (ITA Decree Art. 2(1)). Two situations are expressly deemed to create a domicile: holding a job that normally requires continuous residence in Korea of 183 days or more, and having family here together with an expectation of continuous residence of 183 days or more given your occupation and assets (ITA Decree Art. 2(3)1·2).

This matters more than most people expect. Where the deemed-domicile rule applies, residency generally starts on the day the condition arises, which for an employee on a multi-year contract is typically arrival — not after 183 days have elapsed (ITA Decree Art. 2-2(1)2). The 183-day count is the fallback test, not the primary one, and it can be met continuously across two tax years rather than within one (ITA Decree Art. 4(3)2).

The rule also works in the other direction. A person living abroad with foreign nationality or permanent residence, no family sharing a household in Korea, and no expectation of returning to live mainly in Korea is treated as having no Korean domicile (ITA Decree Art. 2(4)). Residency ends on the day after departure to move one's base abroad (ITA Decree Art. 2-2(2)1).

Because the test is factual, borderline cases turn on individual assessment. Visa type, foreign registration, and length of stay are evidence, not the conclusion.

 

B. What Korea may tax (Issue ②)

The consequence of the status is set out in two sentences of the Income Tax Act.

Residents are taxed on worldwide income (ITA Art. 3(1)). Foreign residents, however, get a significant narrowing. If the total time you have had a domicile or residence in Korea during the past 10 years is 5 years or less, income arising outside Korea is taxed only to the extent it is paid in Korea or remitted to Korea (proviso to ITA Art. 3(1)).

Non-residents are taxed only on Korean-source income (ITA Art. 3(2)). The catalogue of Korean-source income is in ITA Art. 119, and covers items such as rent from Korean property, pay for work performed in Korea, and gains on Korean real estate.

One clarification prevents a common mistake. Salary for work performed in Korea is Korean-source income. It does not become foreign income because an overseas company pays it into an overseas account. The 5-year rule protects genuinely foreign-source income; it does not shelter your Korean earnings.

C. Status decides liability, but whose status is tested changes (Issues ③ and ④)

This is the point that causes the most confusion in practice. "Are you a resident?" is the right question only for income tax. For the other taxes, a different person's status, or a different concept altogether, is tested. 

Tax	Whose Status is Tested	Resident	Non-resident
Income tax	the individual earning the income	Worldwide income, with the 5-year rule for foreign residents (ITA Art. 3(1))	Korean-source income only (ITA Art. 3(2), Art. 119)
Inheritance tax	the deceased (피상속인)	All inherited property, wherever located (IGTA Art. 3(1))	Only property located in Korea (IGTA Art. 3(2))
Gift tax	the recipient (수증자)	All gifted property (IGTA Art. 4-2(1)1)	Only gifted property located in Korea (IGTA Art. 4-2(1)2)
Capital gains tax	the seller; "one household" is defined by reference to a resident	One-house exemption available if requirements met (ITA Art. 88(6), Art. 89(1)3)	Generally not available, with narrow exceptions (ITA Art. 121(2) proviso, ITA Decree Art. 180-2(1))
VAT	no residency test — the place of business governs	A business operator is taxed per place of business (VATA Art. 3(1), Art. 6(1))	Same test. A foreign supplier without a Korean establishment triggers the reverse charge on the Korean recipient (VATA Art. 52(1))

Three consequences follow.

 

First, inheritance tax looks at the deceased, not the heir. A foreign heir living abroad can still face Korean inheritance tax on the entire worldwide estate if the deceased was a Korean tax resident. Conversely, if the deceased was a non-resident, only Korean-situs property is taxed, even if every heir lives in Korea (IGTA Art. 3).

 

Second, gift tax looks at the recipient. If the recipient is a non-resident, only Korean-situs gifted property is taxable (IGTA Art. 4-2(1)2). That is not a loophole: a separate rule in the Adjustment of International Taxes Act (국제조세조정에 관한 법률) addresses gifts of overseas property by a resident to a non-resident. That rule will be covered in a later post.

 

Third, the IGTA has its own definition of resident. Its wording parallels the Income Tax Act, and the determination is referred back to the ITA Decree, but the IGTA adds a rule of its own: a non-resident who returns to Korea intending to settle permanently and dies here is treated as a resident (IGTA Art. 2(8); IGTA Decree Art. 2(2)). So resident status should be confirmed per tax rather than assumed to carry across.

D. Residency also changes the amount, not just the scope (Issue ④)

Even where a non-resident is within the Korean tax net, the calculation differs.

For inheritance tax, the basic deduction of KRW 200 million is available whether the deceased was a resident or a non-resident (IGTA Art. 18). Almost everything else — the spouse deduction, other personal deductions, the KRW 500 million lump-sum deduction, the financial asset deduction and the cohabiting-house deduction — is written to apply "where inheritance commences upon the death of a resident" (IGTA Arts. 19, 20, 21, 22, 23-2). The practical gap between a resident estate and a non-resident estate of the same size is therefore large.

The same pattern appears in gift tax. The gift deductions in IGTA Art. 53 — KRW 600 million from a spouse, KRW 50 million from a lineal ascendant, and so on — apply only where the recipient is a resident.

Capital gains tax follows the same logic through a different route. The one-house exemption belongs to "one household", and that term is defined by reference to a resident and their spouse (ITA Art. 88(6)). For non-residents selling Korean real estate, the exemption is expressly switched off (ITA Art. 121(2) proviso; ITA Decree Art. 180-2(1)). Two narrow exceptions survive: emigration under the Emigration Act, and departure of the entire household for study or work requiring at least a year abroad — in both cases only where one house was held at departure and is sold within two years of departure (ITA Decree Art. 154(1)2(b)·(c)). Departure timing therefore has direct tax consequences, and should be reviewed before, not after, a sale.

VAT sits outside this framework entirely. Liability attaches to a "business operator", defined without regard to profit motive or residency, and the place of taxation is each place of business (VATA Art. 2(3), Art. 3(1), Art. 6(1)). A non-resident operating a business in Korea is a VAT taxpayer in the same way as anyone else. Where a foreign supplier has no Korean establishment, the Korean recipient generally accounts for the VAT instead (VATA Art. 52(1)).

E. What nationality actually does (Issue ⑤)

Korean tax statutes assign liability by residency and by source or situs. Nationality does not appear in the basic liability rules of the Income Tax Act, the Inheritance Tax and Gift Tax Act, or the Value-Added Tax Act.

Nationality and foreign permanent residence appear in a narrower role. They are among the facts weighed in deciding whether someone living abroad still has a Korean domicile (ITA Decree Art. 2(4)). Being a foreign national also opens access to certain reliefs designed for foreign employees, which will be dealt with separately in this series. And where you are treated as a tax resident of two countries at once, an applicable tax treaty may allocate residency through tie-breaker rules.

The practical takeaway is that a foreign passport does not exclude you from Korean tax, and Korean nationality does not by itself subject you to it. What is tested is where you actually live and where the income or property is.

F. Practical management

• Establish your residency status per tax year, and record the facts that support it: household, family, work, and assets. Status can change mid-year (ITA Decree Art. 2-2).
• Track your cumulative years in Korea over the past 10 years. The 5-year threshold in ITA Art. 3(1) changes your exposure to foreign income.
• When inheritance or a gift is in prospect, identify whose status matters first — the deceased for inheritance, the recipient for gifts — and then map where the property is located.
• If you hold a Korean home and may leave Korea, review the timing of any sale before departure. The exceptions for non-residents are narrow and time-limited.
• If you run a business in Korea, treat VAT as a separate question from your personal residency.

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5. Conclusion

In principle, Korea's right to tax you is determined by whether you are a resident under Korean tax law, and by where your income or property is located. Nationality is not the test.

Resident status, however, does not operate uniformly:

• for income tax, your own status is tested, and foreign residents of 5 years or less benefit from a narrowed scope of foreign income
• for inheritance tax, the deceased's status is tested
• for gift tax, the recipient's status is tested
• for capital gains tax, the one-house exemption is built on a household defined by reference to a resident, with only narrow exceptions for those who have left Korea
• for VAT, residency is not the test at all; the place of business is

On the mitigating side, non-resident estates still receive the basic deduction, and departing households may retain the one-house exemption if they act within the statutory window.

What decides your Korean tax is not the passport you hold, but where you live and where the money and property sit.

The next post in this series looks at foreign residents in detail: how the 5-year rule works, and what foreign income has to be reported. If your situation spans two countries, we recommend a review before the relevant filing deadline. Consultations in English are available.

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※ Disclaimer

This post is written to provide general tax information and is not tax advice on any specific matter. Actual tax treatment may vary depending on individual facts, changes in legislation, and the interpretations of the tax authorities. Please consult a professional before making any important decision. The author accepts no responsibility for any consequences arising from reliance on this post.