Before incorporating anything, a foreign company entering Korea should decide what kind of presence it actually needs. The three standard options are a liaison (representative) office, a branch, and a subsidiary. They look similar from the outside but differ sharply in liability, taxation, and what they are legally allowed to do.
The liaison office
A liaison office is the lightest footprint. It can conduct non-revenue activities such as market research, liaison with the head office, quality control, and advertising support, but it cannot earn sales income in Korea. Because it does not generate profit locally, it is generally not subject to Korean corporate income tax on business profits, though it still registers and handles payroll withholding for staff. It is ideal for testing the market before committing.
The branch
A branch is an extension of the foreign head office and can carry on the same revenue-generating business in Korea. Crucially, it is not a separate legal person: the foreign parent bears direct legal and financial liability for the branch's obligations. A branch is taxed in Korea on its Korean-source income, and in some cases a branch profit remittance tax may apply depending on the relevant tax treaty. A branch can be efficient where the parent wants a direct presence without a new corporate shell.
The subsidiary
A subsidiary is a separate Korean company owned by the foreign parent, typically a stock corporation or limited company. It shields the parent from direct liability, qualifies as a foreign-invested company under the Foreign Investment Promotion Act, and supports the D-8 investor visa. It carries the most setup and compliance work but offers the cleanest separation and the strongest local credibility. Most foreign investors who plan to operate substantively in Korea choose this route.
How liability and tax compare
The decisive question is usually liability. A subsidiary contains risk inside the Korean entity; a branch exposes the parent. Tax outcomes also differ, and the better structure depends on your home jurisdiction and treaty position, so the comparison should be run with your specific facts rather than assumed.
What to do
Match the structure to your stage. If you only need to observe the market, start with a liaison office. If you want full operations with limited parent exposure, choose a subsidiary. A branch sits in between and suits specific cases such as financial-sector entrants. You can also begin light and convert later, but conversion has its own cost.
Choosing the wrong vehicle can expose your parent company to unnecessary liability or block the visa you need. If you are deciding how to enter the Korean market, a consultation can clarify which presence fits your activities and risk tolerance. Attorney Sangbin Min advises foreign companies on market-entry structuring.