Foreign companies entering Korea usually arrive at the same fork early: register a branch of the existing company, or establish a Korean subsidiary. The two look similar from the outside. Both give you a registered presence, both let you invoice locally, and both take a comparable amount of paperwork to set up. The differences sit underneath, in liability, tax treatment, and what support the structure can later access.
Choosing badly is not fatal, but it is expensive to reverse. Converting from one to the other means winding down one entity and establishing another, with the tax and employment consequences that implies. It is worth an hour of thought at the start.
The core distinction
A branch is not a separate company. It is the foreign parent operating in Korea under a Korean registration, and in law the parent and the branch are one legal person. A subsidiary is a Korean company in its own right, owned by the foreign parent but legally distinct from it.
Almost every practical difference between the two follows from that single point. Liability, tax, incentive eligibility, and the scope of permitted activity all trace back to whether Korea sees one company or two.
Liability
With a branch, the foreign parent carries the obligations directly. A contract dispute, an employment claim, or a debt incurred in Korea reaches the parent company’s balance sheet without an intervening entity. For a business with low operational risk this may be acceptable. For anything involving significant contracts, physical operations, or a large local workforce, it is a meaningful exposure.
A subsidiary contains that risk. The parent’s exposure is generally limited to what it has invested, and Korean liabilities sit with the Korean company. This is the single most common reason companies choose a subsidiary even when a branch would be simpler to establish.
Tax treatment
How a branch is taxed
A branch is taxed in Korea on the income attributable to its Korean operations. Because it is part of the parent rather than a separate company, there is no dividend to distribute: profits are already the parent’s. Some tax treaties, however, permit a branch profits tax on remitted earnings, which can offset the apparent simplicity. Whether it applies, and at what rate, depends on the treaty between Korea and the parent’s home jurisdiction.
How a subsidiary is taxed
A subsidiary is a Korean corporate taxpayer, assessed on its worldwide income in the same way as any domestic company. Returning profits to the parent means paying a dividend, which attracts withholding tax at the treaty rate. The result is two potential layers rather than one, though treaty relief often narrows the gap considerably.
The honest position is that neither structure is reliably cheaper. The answer depends on your home jurisdiction’s treaty with Korea, whether profits will be repatriated or reinvested, and how the parent’s own tax system treats foreign income. This is a question for a tax adviser with sight of both sides, not a rule of thumb.
Access to government support
This is where the two diverge sharply, and it is the factor most often missed. Korea’s foreign investment incentive framework is built around the foreign-invested company: a Korean entity holding foreign investment that has been formally notified under the Foreign Investment Promotion Act. A subsidiary established with a qualifying investment can hold that status. A branch generally cannot, because there is no Korean entity for the investment to sit in.
A minimum investment threshold applies for the notification to qualify, and it is set by statute rather than negotiated. Current thresholds and procedure are published by Invest KOREA. If cash grants, site support, or tax reductions form any part of your plan, this consideration should probably decide the structure on its own.
Scope of permitted activity
A branch conducts the business of its parent. Its registered scope of activity follows the parent’s, and it cannot readily pursue a line of business the parent does not itself conduct. A subsidiary defines its own business purpose at registration and can be structured around what the Korean market actually requires.
For companies whose Korean plan mirrors the parent’s existing operations, this rarely bites. For companies planning to do something meaningfully different in Korea, or to build toward a joint venture or local partner arrangement, the subsidiary’s flexibility matters.
A third option worth naming
The liaison office sits alongside both and is frequently confused with a branch. It may conduct market research, liaison, and support activity, but it cannot generate revenue in Korea. It is useful for a genuine exploratory phase and unsuitable the moment you intend to sell. Our insights piece on key entity options for foreign investors sets out how the three compare in practice.
Setup and ongoing obligations
- Branch: registration with the commercial registry, notification through a designated foreign exchange bank, and business registration with the tax office. No capital injection in the subsidiary sense, though operating funds must be remitted and recorded properly.
- Subsidiary: foreign investment notification, remittance of the investment, incorporation and commercial registration, then business registration. More steps, and the capital movement must be documented carefully.
- Both: corporate tax filings, VAT registration and returns, payroll and the four major insurances once staff are hired, and annual reporting obligations.
Parent company documents are required either way, and generally need certification and apostille in the home jurisdiction. That step is the usual cause of delay and is worth starting early regardless of which structure you choose.
Which fits which situation
A branch tends to suit companies with a narrow Korean function that mirrors the parent’s business, limited contractual risk, no interest in government support, and a preference for keeping Korean results consolidated into the parent without a separate corporate layer.
A subsidiary tends to suit companies building a substantive Korean operation: hiring locally at scale, signing significant contracts, pursuing incentives, planning a partner or joint venture structure, or wanting the option to sell or spin out the Korean business later. For most foreign companies making a genuine market entry rather than a supporting presence, the subsidiary is the default, with the branch as the considered exception.
For broader context on how foreign investment into Korea is structured and treated, see our guide to foreign direct investment in Korea.
Common mistakes
- Choosing a branch for speed, then discovering incentive programmes are closed to it
- Assuming a branch avoids Korean tax complexity — it does not, it relocates it into treaty analysis
- Treating a liaison office as a low-cost branch and then invoicing through it
- Registering before confirming how the parent’s home jurisdiction taxes each structure
- Leaving apostille of parent documents until the registration timeline is already committed
Frequently asked questions
Is a Korean branch office a separate legal entity?
No. A branch is the foreign parent company operating in Korea under a Korean registration. Parent and branch are one legal person, which is why the parent carries the branch’s liabilities directly.
Can a branch office apply for Korean government incentives?
Generally no. Most incentive programmes require a foreign-invested company: a Korean entity holding formally notified foreign investment. A branch does not create that entity, so it usually falls outside the framework.
Which structure results in a lower tax bill?
There is no reliable general answer. It depends on the tax treaty between Korea and the parent’s jurisdiction, whether profits are repatriated or reinvested, and how the parent’s home system treats foreign income. It needs advice covering both sides.
Can a branch be converted into a subsidiary later?
Not by simple conversion. In practice it means establishing the subsidiary and winding down the branch, with tax, contractual, and employment consequences attached. This is why the initial choice deserves proper attention.
How does a liaison office differ from a branch?
A liaison office may carry out research, liaison, and support work but cannot generate revenue in Korea. A branch can trade and invoice. A liaison office suits an exploratory phase only.
Work with Pearson & Partners Korea
Pearson & Partners Korea advises foreign companies on entering and operating in Korea, covering company incorporation, branch registration, employer of record arrangements, tax and accounting, payroll, and business visa advisory. We work through the structuring question before registration rather than after, so the choice is made with the tax, liability, and incentive picture visible rather than discovered later.
If you are weighing a branch against a subsidiary, we are happy to talk it through. Reach us at pearsonkorea.com/contactus or on 02 6952 7579. Our offices are at WTC Trade Tower, 30F, 511 Yeongdong-daero, Gangnam-gu, Seoul.
Whichever structure you choose, the registration process itself follows a common path. Our complete guide to Korea company registration covers it step by step.
This article is provided for general information only and does not constitute legal, tax, or investment advice. Requirements and thresholds change; confirm current details with a qualified adviser or the relevant authority before acting.
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