[Korean Law Insights] The “Foreign Address” Requirement for Renouncing Korean Nationality

[Published on October 28, 2025 edition of the "Korean Law Insights" column in the Korea Daily’s Economic Expert Section]

- Foreign Address Determined by Substantive Review of Actual Residence

- It Is Advisable to Prepare Supporting Evidence in Advance

A person with dual nationality by birth must, in principle, choose one nationality before reaching the age of 22. If they choose to retain Korean nationality and sign a written oath not to exercise foreign nationality while in Korea, they may maintain dual citizenship. Conversely, to renounce Korean nationality, they must have a “foreign address” and file a nationality renunciation report through a Korean consulate overseas. For males, this report must be made by March 31 of the year in which they turn 18, due to military service obligations. After that deadline, renunciation is only possible after completing military service or under very exceptional circumstances.

A recent court ruling, which has drawn significant attention in the Korean-American community, addressed this issue of nationality renunciation. The petitioner, “A,” was a dual national by birth born in 2005. “A” entered Korea in August 2015 and attended school there. After leaving for the United States in June 2022, “A” filed a nationality renunciation report through a Korean Consulate in July of the same year.

The Ministry of Justice rejected the filing, reasoning that “A” could not be regarded as having the United States as his or her primary place of residence (i.e., a “foreign address”), since “A” had effectively been residing in Korea. “A” filed an administrative lawsuit seeking to overturn this decision.

The court’s reasoning was clear. Whether one has a “foreign address” depends not on a formal address entry but on where the person’s actual base of life lies. The court also considers whether the person’s stay in Korea is merely temporary or incidental, and whether there is objective evidence of imminent return abroad. Applying these criteria, the court found that “A” had lived mostly in Korea with parents from 2015 until the filing date (July 2022) and had spent only brief periods in the U.S. Therefore, A’s actual center of life was in Korea, and the Ministry of Justice’s rejection was lawful.

In practice, the same principle applies. A “foreign address” is not simply a mailing or temporary stay address but is determined based on objective indicators such as education, employment, family residence, duration and reason for stay, etc. Those preparing to renounce Korean nationality should gather and maintain documents proving their substantive life abroad such as school or employment certificates, business records, housing leases and utility bills, tax and insurance documents, bank transaction records, and long-term residence evidence.

Of course, outcomes may differ depending on factual circumstances. For instance, in a past case involving a dual national who stayed in Korea because the parents served with the U.S. military stationed there, the court found the Korean stay to be temporary and based on a special status. Because the family had a U.S. address within the military base, followed the American curriculum, and was expected to return to the U.S. after reassignment, the “foreign address” requirement was deemed satisfied. Ultimately, the key factor is where the center of one’s life truly lies.

Renouncing nationality is a serious procedure that affects a dual national’s career and legal rights. For certain professions such as U.S. federal government employees—dual nationality may be a decisive issue. It is best for parents and children not to rush but to carefully review the requirements, timing, and necessary supporting documents for nationality selection or renunciation. This recent ruling once again reminds us that nationality is not a mere label changed by filing a form. It is a legal status proven through the substance of one’s life.

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Jin Hee Lee/K-Law Consulting Korean Attorney

[Reference link in original Korean] 

https://www.koreadaily.com/article/20251028230234735