South Korea is stepping up efforts to collect taxes from wealth held overseas, a shift that could increase compliance risks for U.S. companies, investors and wealthy individuals with cross-border assets as the country expands cooperation with foreign tax authorities.
On October 7, the National Tax Service said Kwon Hyuk, chairman of Sido Group and formerly South Korea’s largest individual tax delinquent, had submitted a plan to fully pay 393.8 billion won, or about $285 million, in personal tax arrears. Kwon has already paid 100 billion won, or about $72 million, in cash.
The tax debt dates back to an income-tax assessment issued in 2011. Kwon had previously argued that he was not liable for the taxes because he was not a resident of South Korea.
The remaining balance will be secured by five ships held overseas. Kwon has no domestic assets registered in his name that can readily be seized, but the National Tax Service said the vessels are worth more than the remaining tax liability.
The agency is reviewing the adequacy of the collateral and is also seeking preliminary guidance from the Board of Audit and Inspection. The arrangement marks the first case in which overseas vessels have been offered as collateral for South Korean tax arrears, according to the tax authority.
The broader amount recorded as delinquent is significantly larger. Including Kwon’s personal tax arrears and secondary tax liabilities assigned to related companies, the total amount recorded on government books is 790.2 billion won, or about $573 million.
That does not mean Kwon is being asked to make a separate $573 million personal payment. If he pays the full 393.8 billion won personal liability, the related companies’ secondary tax liabilities will also be extinguished, allowing the entire 790.2 billion won recorded delinquency to be cleared.
The turnaround follows an intensified campaign by the National Tax Service to locate Kwon’s assets overseas. A special task force launched in January expanded international information-sharing efforts and dispatched delegations to countries considered important to his overseas ownership structure.
The agency also held high-level meetings with foreign tax authorities to strengthen cooperation on tax collection and information exchanges. Liberia and Panama were among the countries targeted because of their importance to international shipping and vessel registration. The National Tax Service also said cooperation with the U.K. tax authority has improved.
Domestic enforcement added further pressure. Seoul Regional Tax Office’s Investigation Bureau 4 conducted an unscheduled tax investigation in June into the Korean sales office of Sidoshipping, a company Kwon is effectively involved in managing. He paid 100 billion won in cash a month later.
For U.S. companies and investors with operations or assets in South Korea, the case highlights a broader change in the country’s tax-enforcement strategy. Seoul is increasingly combining domestic tax investigations with international information networks to identify offshore assets and ownership structures.
The National Tax Service plans to institutionalize the approach by creating special investigation teams within regional tax offices, including Seoul’s Investigation Bureau 4. The teams will investigate delinquent taxpayers suspected of tax evasion, illicit transfers of funds and attempts to avoid tax collection.
The agency also plans to recruit specialists in criminal tax investigations, personal-asset investigations involving company owners, legal reviews of seized assets and the collection and use of offshore information.
The case could serve as a warning for wealthy individuals and multinational businesses that use foreign jurisdictions to hold assets. South Korean authorities are building a broader enforcement network designed to track and collect delinquent taxes regardless of where assets are located.
For investors, the development points to a more stringent cross-border compliance environment in South Korea, where offshore ownership may make tax collection more complicated but increasingly difficult to avoid.
