This South Korea tax guide covers the rules in force from 1 January 2026. Personal income tax runs from 6% to 45% before a 10% local surtax — an effective 6.6% to 49.5%. Corporate rates rose one percentage point across all four brackets to 10%–25%. There is no wealth tax, and listed-share gains are untaxed for ordinary investors. The headline draw for foreigners is a 19% flat tax election lasting 20 years, plus a five-year window in which most foreign-source income escapes Korean tax entirely.
Introduction
South Korea occupies the southern half of the Korean peninsula, bordered only by North Korea across the world’s most heavily fortified frontier, with Japan and China as close maritime neighbours. It is a presidential republic with a civil-law system, an OECD and G20 member, and one of Asia’s largest economies — built on semiconductors, shipbuilding, automotive, batteries and cultural exports. The climate is four-season temperate. Korean is the sole official language and English penetration outside Seoul’s business districts is limited, which materially affects day-to-day tax compliance. Seoul is expensive by regional standards — comparable to Tokyo for housing, cheaper for healthcare, transport and food — while Busan, Daegu and Daejeon run well below the capital. Korea has income tax treaties with 97 countries, one of Asia’s densest networks, plus free trade agreements covering the EU, the US, China and ASEAN.
This South Korea tax guide matters because Korea sits in an unusual position for internationally-mobile capital: a high-tax, high-compliance jurisdiction on paper that offers two concessions few developed countries match. First, foreigners who begin work in Korea by 31 December 2026 can elect a flat 19% national rate (20.9% with local income tax) on employment income for 20 years. Second, a foreign resident present in Korea five years or less during the preceding ten-year period is taxed only on Korea-source income, plus foreign-source income paid by a Korean entity or remitted into Korea — a de facto remittance basis. Against that, 2026 brought real tightening: corporate rates rose one point across every bracket, and the securities transaction tax on KOSPI and KOSDAQ disposals went from 0.15% to 0.20%.
Direct Taxes
Korean residents are taxed on worldwide income; non-residents only on Korea-source income. Residence follows from a Korean domicile or 183 days’ presence — and, after a 2025 amendment, from 183 consecutive days spanning two tax years. Progressivity is steep: eight national bands from 6% to 45%, each carrying a separate local income tax at 10% of the national figure, paid to the taxpayer’s city or province rather than to the National Tax Service. Corporate residence turns on place of incorporation or effective management. The signature concept for internationally-mobile investors is the five-year rule — the length of your Korean residence history, not just your current status, determines whether your foreign income is exposed.
Personal income tax (2026 bands)
| Annual taxable income (KRW, USD) | Rate |
|---|---|
| Up to 14,000,000 (~$9,900) | 6% |
| 14,000,001 – 50,000,000 (~$9,900 – $35,500) | 15% |
| 50,000,001 – 88,000,000 (~$35,500 – $62,400) | 24% |
| 88,000,001 – 150,000,000 (~$62,400 – $106,000) | 35% |
| 150,000,001 – 300,000,000 (~$106,000 – $213,000) | 38% |
| 300,000,001 – 500,000,000 (~$213,000 – $355,000) | 40% |
| 500,000,001 – 1,000,000,000 (~$355,000 – $709,000) | 42% |
| Over 1,000,000,000 (~$709,000) | 45% |
These bands have applied since 1 January 2023 and were not changed by the 2026 reform. Add the 10% local income tax and the ladder becomes 6.6% to 49.5%. Employment income benefits from an earned-income deduction, a personal exemption of KRW 1,500,000 (~$1,060) per qualifying person, and credits for insurance, medical, education and pension contributions. The alternative is the flat 19% election (20.9% with local tax), which forfeits every deduction, exemption and credit and adds back otherwise non-taxable allowances — so it typically only wins above roughly KRW 130,000,000 (~$92,000) of annual employment income. Qualified foreign engineers and researchers can instead claim a 50% reduction for ten years, or 70% for the first three years in the materials, parts and equipment sector, provided they started work in Korea by 31 December 2026.
Corporate income tax
| Item | Rate |
|---|---|
| First KRW 200 million (~$142,000) — FY from 1 Jan 2026 | 10% |
| KRW 200 million – 20 billion (~$142,000 – $14.2m) | 20% |
| KRW 20 billion – 300 billion (~$14.2m – $213m) | 22% |
| Over KRW 300 billion (~$213m) | 25% |
| Prior rates (FY beginning before 1 Jan 2026) | 9% / 19% / 21% / 24% |
| Local income tax on corporations (separate levy) | 1.0% / 2.0% / 2.2% / 2.5% |
| Combined top rate including local income tax | 27.5% |
The one-point increase across all four brackets applies to fiscal years beginning on or after 1 January 2026 and reverses the 2023 cut, restoring the top combined rate to 27.5%. Korea implemented the OECD Pillar Two GloBE rules for groups with consolidated revenue of €750 million (~$865 million) or more — the income inclusion rule from 2024, the undertaxed profits rule from 2025, and a domestic minimum top-up tax from 1 January 2026. Failure to file a GloBE information return can trigger a fine of up to KRW 100 million (~$71,000), subject to transition relief. Losses from fiscal years beginning on or after 1 January 2020 carry forward 15 years, capped at 80% of taxable income for non-SMEs. A minimum tax of 7%–17% limits the benefit of incentives, and a 20% additional tax on excess retained earnings applies to large conglomerate members until 31 December 2028.
Social security and health contributions
| Contribution | Employee | Employer | Self-employed / locally insured |
|---|---|---|---|
| National Pension | 4.75% | 4.75% | 9.5% (full rate) |
| National Health Insurance incl. long-term care | ~4.0674% | ~4.0674% | Assessed on income and property |
| Employment Insurance | 0.90% | 1.15% – 1.75% | Voluntary |
| Workers’ Compensation Insurance | — | 0.56% – 18.56% | Not applicable |
Pension contributions are capped at monthly earnings of KRW 6,590,000 (~$4,670) from July 2026, giving a maximum employee contribution of KRW 313,025 (~$222) per month to June 2027, up from KRW 302,570 (~$215) in the first half of 2026. The combined pension rate rose from 9% to 9.5% on 1 January 2026 under a reform that steps it up annually to 13% by 2033. Health insurance including long-term care runs at roughly 8.135% of wages in 2026, split equally, with the total monthly contribution capped at KRW 10,390,220 (~$7,370). Foreigners must generally join both schemes, though a totalisation agreement can exempt you from pension contributions and comparable private cover can exempt you from health insurance.
Indirect Taxes
Korea operates a conventional credit-invoice VAT introduced in 1977, administered by the National Tax Service on a quarterly basis. It is the dominant indirect tax and applies to imports and to non-resident suppliers of electronic services to Korean consumers.
Value-added tax (VAT)
| Rate | Applies to (examples) |
|---|---|
| 10% (standard) | Almost all goods and services, imports, and cross-border digital services |
| 0% (zero) | Exports, international transport, goods and services supplied to non-residents earning foreign currency |
| Exempt | Unprocessed foodstuffs, medical and health services, education, financial and insurance services, residential leasing, certain government supplies |
Excise and other indirect taxes
| Tax | Notes |
|---|---|
| Individual consumption tax | Levied on cars, fuel, tobacco, jewellery and on operators of casinos, golf courses and racecourses |
| Liquor tax | Rate varies by beverage class; volumetric for beer and makgeolli |
| Securities transaction tax | 0.20% on KOSPI and KOSDAQ disposals from 1 January 2026 (0.15% before), 0.1% on KONEX, 0.35% on unlisted shares |
| Acquisition tax | 1%–12% on real estate, vehicles, vessels and golf memberships costing more than KRW 500,000 (~$355); weighted rates in the Seoul metropolitan area and on luxury assets |
| Stamp duty | Fixed amounts on contracts and instruments |
| Customs duties | Substantially reduced or eliminated under Korea’s FTA network |
Other Taxes Worth Knowing
| Tax | South Korea treatment |
|---|---|
| Capital gains — listed shares | Exempt for ordinary investors. Taxed only if you are a “major shareholder”: 1% or more of a KOSPI company (2% KOSDAQ, 4% KONEX) together with related parties, or holdings worth KRW 5 billion (~$3.55m) or more — KRW 4 billion (~$2.84m) for a venture firm. Then 22%–27.5% including local tax, or 33% if held under one year |
| Capital gains — unlisted shares | 11% including local tax for small-company shares; otherwise 22%–27.5% |
| Capital gains — real estate | Progressive 6%–45% plus 10% local surtax if held two years or more; punitive short-term rates below that; multi-home surcharges in regulated zones are currently in flux — verify before transacting |
| Dividends (resident individual) | 15.4% withheld including local tax; rolled into global income if total financial income exceeds KRW 20 million (~$14,200). New from 1 January 2026: dividends from qualifying high-payout companies are taxed separately at 14%–30%, through FY2028 |
| Interest (resident individual) | 15.4% withheld including local tax; same KRW 20 million (~$14,200) aggregation threshold |
| Rental income | Taxed as business income at 6%–45% plus local surtax; deemed rent is imputed on jeonse-style lease deposits |
| Wealth / net worth tax | None |
| Inheritance / estate tax | 10%–50%, among the highest in the OECD; effectively up to 60% on a controlling shareholder’s shares via a 20% valuation premium. Lump-sum deduction of KRW 500 million (~$355,000). No separate estate tax |
| Gift tax | 10%–50% on the same brackets; credited against later inheritance tax on the same property |
| Immovable property tax (annual) | Local property tax 0.07%–5% of statutory value, plus the comprehensive real estate holding tax at 0.5%–2.7% for owners of two or fewer homes and up to 5.0% for three or more |
| Securities transaction tax | 0.20% on KOSPI and KOSDAQ disposals from 1 January 2026 |
| Exit tax | Charged on unrealised gains on domestic shares held by departing large shareholders resident five years or more; extended to foreign shares from 1 January 2027 above KRW 500 million (~$355,000) |
The practical picture is narrower than the headline rates suggest. An ordinary resident investor holding Korean listed equities pays no capital gains tax at all — only the 0.20% transaction tax on disposal — because the scheduled financial investment income tax was abolished in the 2025 reforms and the major-shareholder threshold stayed at KRW 5 billion (~$3.55m) after the government dropped a proposal to cut it to KRW 1 billion (~$709,000). Financial income below KRW 20 million (~$14,200) a year is fully settled by the 15.4% withholding, with no return required. The tax that actually bites is inheritance tax, which the government has repeatedly proposed reforming — including a spouse deduction of KRW 1 billion (~$709,000) — without those amendments reaching the statute book; treat any figure above the KRW 500 million (~$355,000) lump sum as pending.
Disadvantages & Risks
Korea’s location is its defining risk. The peninsula remains technically at war, and while markets long ago priced in the North Korean threat, the country sits at the intersection of US–China strategic competition with an economy exposed to both. Domestic politics have been volatile: the December 2024 martial law episode and the impeachment that followed produced months of institutional uncertainty, and the tax code has since swung with the governing coalition — the 2023 corporate rate cut was reversed for 2026 and the securities transaction tax restored after years of reductions. Economic concentration compounds this: a handful of chaebol groups dominate output and exports, semiconductors alone account for roughly a fifth of merchandise exports, and demographics are the worst in the developed world, with a fertility rate near 0.8 driving the contribution increases now scheduled through 2033.
On compliance, Korea is not a light-touch jurisdiction. It appears on no EU list of non-cooperative jurisdictions and is a full FATF member in good standing — but that cuts both ways: transfer pricing, controlled foreign company rules, thin capitalisation limits and a general anti-avoidance doctrine are all actively enforced, and the National Tax Service audits aggressively. Filings are in Korean, and foreign-exchange transactions must be reported to designated banks or the Bank of Korea under the Foreign Exchange Transactions Act — an administrative layer with real penalties that catches newcomers. Residents holding overseas financial accounts with an aggregate month-end balance above KRW 500 million (~$355,000) must report them annually. Finally, the headline concessions have hard edges: the flat tax and the engineer reductions require a Korean start date by 31 December 2026, and the five-year foreign-income shelter expires by design.
Strategy & Ideal Profile
The structures that work in Korea are timing structures, not entity structures. The core move for an inbound executive is to establish the flat-tax election in the first year of employment — claimed at year-end settlement or on the annual return — after running the arithmetic against the progressive ladder with full deductions, since the 20.9% all-in flat rate only beats the graduated system above roughly KRW 130,000,000 (~$92,000) of employment income. Layered on top, the five-year rule is the genuinely valuable planning asset: for the first five years of Korean residence in any ten-year window, foreign-source dividends, interest and gains stay outside the Korean net unless paid by a Korean entity or remitted into Korea — which argues for funding Korean living costs from Korean-source salary and leaving offshore portfolios untouched and unremitted. The flat tax cannot be used where the employer is a related party, which rules it out for most owner-managers.
Korea suits four profiles. Foreign executives and specialists on Korea-based packages get a competitive effective rate through the flat election; engineers and researchers under technology-inducement agreements do better still with the 50%–70% reductions. Portfolio investors and traders below the major-shareholder thresholds face zero capital gains tax on Korean listed equities and a flat 15.4% on dividends and interest up to KRW 20 million (~$14,200). Dividend earners gained a new option in 2026: distributions from companies with payout ratios of at least 40%, or 25% with a year-on-year increase of 10% or more, are taxed separately at 14%–30% rather than aggregated into a 49.5% top band, through FY2028. Operating businesses below KRW 200 million (~$142,000) of taxable income pay 10% national plus 1% local — competitive for a small Asian holding or service company inside a dense treaty network.
Korea does not suit the passive wealthy, and it is emphatically wrong for retirement and estate planning. Anyone contemplating a permanent move should model the inheritance tax first: rates reach 50%, and up to 60% on a controlling stake, on the worldwide estate of a Korean-domiciled decedent, against a lump-sum deduction of only KRW 500 million (~$355,000). It is also a poor fit for owner-managers hoping to combine the flat tax with their own company, for anyone unwilling to absorb a Korean-language compliance burden and the Foreign Exchange Transactions Act reporting layer, and for large shareholders planning an eventual departure, given the exit tax on unrealised share gains — widening to foreign shares from 1 January 2027. Above all, the headline reliefs are sunsetting instruments: the flat tax and engineer reductions require a start date no later than 31 December 2026, and high-dividend separate taxation is legislated only to the end of FY2028.
FAQ
Is South Korea a tax haven?
No. Korea is a full-rate OECD jurisdiction with personal rates reaching 49.5% including local income tax, a 27.5% combined top corporate rate, worldwide taxation of residents and one of the world’s highest inheritance taxes. It appears on no EU or OECD list of non-cooperative jurisdictions. What it offers is targeted relief for inbound foreign workers and unusually generous treatment of listed-share gains — not low taxation generally.
What is the corporate tax rate in South Korea in 2026?
For fiscal years beginning on or after 1 January 2026, national corporate income tax is 10% on the first KRW 200 million (~$142,000), 20% up to KRW 20 billion (~$14.2m), 22% up to KRW 300 billion (~$213m) and 25% above that. Each band carries a separate local income tax of 1.0% to 2.5%, so the all-in top rate is 27.5%. All four brackets rose one percentage point from the previous 9%/19%/21%/24%.
How does the 19% flat tax for foreigners work?
A foreigner who begins work in Korea no later than 31 December 2026 may elect a flat 19% national rate on employment income — 20.9% with the local surtax — instead of the 6%–45% scale, for 20 years from the first day of work. It forfeits all deductions, exemptions and credits and adds back most otherwise non-taxable allowances, so it usually only pays above about KRW 130,000,000 (~$92,000) a year. It is unavailable where the employer is a related party.
What is South Korea’s five-year rule?
A foreign resident who has been in Korea for five years or less during the preceding ten-year period is taxed on Korea-source income only. Foreign-source income is reportable solely where it is paid by a Korean entity or transferred into Korea — effectively a remittance basis. Once you pass five years in any ten-year window, full worldwide taxation applies, including on foreign dividends and interest at the greater of your marginal rate or 15.4%.
Does South Korea tax capital gains?
Selectively. Gains on Korean listed shares are exempt for ordinary investors and taxed only where the seller is a “major shareholder” — 1% or more of a KOSPI company, or holdings worth KRW 5 billion (~$3.55m) or more — at 22%–27.5% including local tax, or 33% if held under a year. Unlisted shares and real estate are always taxable. A 0.20% securities transaction tax applies to KOSPI and KOSDAQ disposals from 1 January 2026, up from 0.15%.
Is there inheritance or wealth tax in South Korea?
There is no net wealth tax. Inheritance and gift tax, however, run from 10% to 50% and can reach an effective 60% on a controlling shareholder’s shares because of a 20% valuation premium — among the heaviest in the OECD. A lump-sum deduction of KRW 500 million (~$355,000) is available as an alternative to itemised personal deductions. Proposals to raise the spouse deduction to KRW 1 billion (~$709,000) have been announced repeatedly but not enacted; confirm the current position before planning.
How are dividends taxed for a foreign investor in South Korea?
A resident individual suffers 15.4% withholding including local tax, final unless combined interest and dividends exceed KRW 20 million (~$14,200), at which point the excess joins global income. From 1 January 2026, dividends from qualifying high-payout Korean companies are instead taxed separately at 14%–30%. Non-residents face 22% withholding including local tax, commonly reduced to 5%–15% under one of Korea’s 97 income tax treaties — subject to new procedural requirements for claiming treaty relief.
Sources
All figures should be checked against the primary government sources below. Only official government bodies are listed here.
- National Tax Service (NTS) — personal and corporate income tax rates, VAT, withholding and filing procedures — nts.go.kr
- Ministry of Economy and Finance (MOEF) — annual tax reform bills, the 2026 corporate rate increase, securities transaction tax and real estate tax measures — english.moef.go.kr
- National Pension Service (NPS) — pension contribution rates, income ceiling and totalisation agreements — nps.or.kr
- National Health Insurance Service (NHIS) — health insurance and long-term care premium rates and caps — nhis.or.kr
- Korea Law Information Center, Ministry of Government Legislation — Income Tax Act, Corporate Tax Act, Inheritance and Gift Tax Act, Foreign Exchange Transactions Act — law.go.kr
- Invest KOREA (KOTRA) — tax support and incentives for foreign investors and foreign-invested companies — investkorea.org
- Bank of Korea — market average exchange rate used for the USD conversions — bok.or.kr
USD figures are indicative conversions at ~1 USD = KRW 1,410 (Bank of Korea market average rate, August 2026) and rounded.
Last verified: 8 August 2026.
This is general information, not personal tax or legal advice. Tax outcomes depend on your specific facts; consult a qualified South Korean tax adviser before acting.
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