The Pledge of Non-Exercise of Foreign Nationality is a formal promise to South Korea’s Minister of Justice that a qualifying dual citizen will not use foreign nationality rights while inside Korea. Filing it lets you keep both passports without having to renounce one, but from the moment it is accepted, Korean agencies, courts, and immigration officers treat you exclusively as a Korean citizen. The option has existed since January 1, 2011, when amendments to the Nationality Act through Act No. 10275 took effect.1Statutes of the Republic of Korea. Nationality Act
Who Qualifies to File
Only certain categories of dual citizen can file the pledge instead of renouncing a foreign nationality. All of them trace to Article 10, Paragraph 2 of the Nationality Act, and the common thread is that each person already holds Korean nationality through a recognized legal pathway.
- People born with both Korean and a foreign nationality, whether from mixed-nationality parents or birth in a jus soli country.
- Foreign nationals who obtained Korean citizenship through marriage-based naturalization.
- Former Korean nationals aged 65 or older who recovered Korean nationality with the intent to settle permanently in Korea.
- Foreign nationals who received special naturalization for exceptional contributions in fields such as science, economics, culture, or sports.
- Those whose foreign country’s laws make renunciation impossible or extremely difficult, where a Presidential Decree permits the pledge as a substitute.
If you fall outside these categories, the pledge is not available to you and the Nationality Act requires you to choose one nationality.1Statutes of the Republic of Korea. Nationality Act
When You Have to File
The deadlines are strict, and missing one usually costs you Korean citizenship.
If you were born with dual nationality before turning 20, you must either file the pledge or choose a nationality before your 22nd birthday. If you acquired dual nationality after turning 20, you have two years from the date you gained the second nationality.2Statutes of the Republic of Korea. Nationality Act – Article 12
For naturalized spouses, recovered-nationality cases, and the other Article 10(2) categories, the deadline is one year from the date you obtained Korean nationality.3Statutes of the Republic of Korea. Nationality Act – Article 10
The Earlier Deadline for Males Subject to Military Service
Males face a separate, much earlier cutoff set by the Military Manpower Administration. A male dual citizen must choose his nationality by the end of March of the year he turns 18. Miss that window and he cannot renounce Korean citizenship at all until he completes military service or receives an exemption, which effectively binds him to the Korean military obligation regardless of where he lives.4Military Manpower Administration. Notice – Nationality Choice for Male Dual Citizens
The restriction is tighter still for males born while their parents were living abroad without permanent-residence intent. They cannot renounce Korean nationality even during the normal renunciation period and must fulfill or be exempted from military duty before making any nationality choice.4Military Manpower Administration. Notice – Nationality Choice for Male Dual Citizens
What You’re Promising
The pledge is not a one-time formality. It reshapes how you interact with Korea for as long as you hold dual status.
The most concrete rule is at the border. You must use your Korean passport every time you enter or leave South Korea. Presenting your foreign passport at Korean immigration is treated as exercising your foreign nationality and can trigger enforcement.
Inside the country, every government agency, court, and local office treats you exclusively as Korean. You cannot claim any special status, exemption, or diplomatic protection based on your foreign citizenship. You must be listed on the Korean family relation register rather than holding a foreign resident card or visa. All civic duties apply, including tax obligations and, for males who have not yet completed it, mandatory military service. Conscription for most army enlistees currently runs approximately 18 months, with longer terms for certain branches.1Statutes of the Republic of Korea. Nationality Act
You do keep the right to vote. Korean election law does not disqualify dual citizens who have filed the pledge from voting in presidential or National Assembly elections, provided they are 18 or older.5National Election Commission. Right to Vote and Electoral Eligibility
Travel Permits for Males With Unfulfilled Service
Male dual citizens between 25 and 37 who have not yet completed military duty must obtain an overseas travel permit from the Military Manpower Administration before leaving Korea. Traveling abroad without it counts as evading enlistment and can be punished by up to three years in prison. Returning to Korea with the intent to live there permanently triggers the military obligation regardless of any prior permit.
How to File
You file in person, either at a regional immigration office inside Korea or at the Korean embassy or consulate serving your area if you live abroad. A processing fee applies. Officers review your original documents, keep copies, and return the originals.
Documents You’ll Need
From the Korean side, you need two recent certificates from the Korean family relation register: the Basic Certificate (기본증명서) and the Family Relation Certificate (가족관계증명서). Both are available through community service centers in Korea, the Supreme Court’s online system with a Korean identification number, or Korean consulates abroad for a small fee. Generally, they must have been issued within the past three months. The Basic Certificate must reflect your birth details and any nationality changes.
From the foreign side, you need a valid foreign passport and proof of how you acquired that nationality, which could be a foreign birth certificate, a naturalization certificate, or comparable documentation. Documents not in Korean typically require certified translation and notarization, and cross-border authentication (an apostille for countries in the Hague Apostille Convention, including the United States) is often required.6U.S. Department of State. Preparing a Document for an Apostille Certificate
The pledge form itself is standardized and available on the HiKorea website or at any regional immigration office. You’ll need a recent passport-sized photo, your foreign passport number, the date you acquired the foreign citizenship, and your current Korean address. Details must match your Korean and foreign records exactly, because the Ministry of Justice cross-checks during verification.
After You Submit
The Ministry of Justice verifies the file against Nationality Act requirements. Processing runs from a few weeks to several months depending on complexity and caseload. Once accepted, you receive a formal notification or certificate confirming the pledge, and the national database is updated to record your status as a dual citizen who has pledged non-exercise of foreign nationality.
How the Pledge Can Be Revoked
You don’t have to be caught at a passport gate. The Enforcement Decree of the Nationality Act defines specific acts that count as “evidently violating” the pledge, and any of them can trigger an order requiring you to choose one nationality.
- Completing a foreign resident registration or filing a foreign address report in Korea for the purpose of exercising your foreign nationality.
- Presenting a foreign passport at any Korean government office, public institution, or educational institution to claim rights as a foreign national, without justifiable reason.
These are set out in Article 18-2, Paragraph 4 of the Enforcement Decree.7Korea Legislation Research Institute. Enforcement Decree of the Nationality Act
Beyond pledge-specific violations, Article 14-3 of the Nationality Act lets the Minister of Justice strip Korean nationality from a dual citizen whose actions are deemed contrary to Korea’s national interests in security, diplomacy, or the economy, or who substantially disrupts social order. A formal hearing is required before that decision. One safeguard matters: this broader power does not apply to people who acquired Korean nationality by birth.8Statutes of the Republic of Korea. Nationality Act – Article 14-3
What the Pledge Doesn’t Change
Two points worth knowing before you sign.
First, US tax obligations. The pledge is a Korean legal instrument and has no effect on how the United States taxes its citizens. If you are a US-Korean dual citizen, the US continues to tax you on worldwide income wherever you live, and foreign bank account reporting rules (FBAR and FATCA) still apply on their own thresholds. The US-Korea tax treaty provides foreign tax credits to prevent double taxation on the same income, but a “saving clause” preserves each country’s right to tax its own citizens.9Internal Revenue Service. Convention Between the United States of America and the Republic of Korea for the Avoidance of Double Taxation
Second, children. A child born to a Korean national at the time of birth automatically acquires Korean citizenship under Article 2 of the Nationality Act, and if the child also acquires a foreign nationality at birth, they become a dual citizen in their own right.10Statutes of the Republic of Korea. Nationality Act – Article 2 Your pledge does not carry to them. Their dual status comes from their own circumstances at birth, and they will face the same deadlines you did: before age 22 for most, or before the end of March of the year they turn 18 for males. Planning for those cutoffs, especially for sons, is what keeps young dual citizens from being locked into military service they didn’t anticipate.