Complete Guide to Japan Dual Citizenship and Renunciation

⚡ 30-second answer: Japan follows single nationality policy (Nationality Act Art. 14). If you acquire foreign citizenship, you must choose by age 22, or within 2 years thereafter. Renunciation filing at Legal Affairs Bureau is ¥0; related family-register documents cost ¥1,500-¥5,000. No automatic filing for foreign citizenship gained passively, but voluntary acquisition triggers filing duty (Family Register Act Art. 103).

Quick reference	Value
Renunciation (Legal Affairs Bureau)	¥0
Family register copy	¥450/copy
Visa status change (post-renunciation)	¥4,000
Selection deadline	Age 22 or 2 years post-acquisition
Last verified	June 2026

30-Second Answer

Japan's Nationality Act takes a "single nationality" approach — Japanese nationals automatically lose Japanese citizenship upon voluntarily acquiring foreign citizenship (Article 11(1)). Those holding dual citizenship from birth (e.g., Japanese-American parents, born in the U.S.) must "choose nationality" by age 22. If foreign citizenship is acquired after 22, choose within 2 years. "Nationality selection filing" is ¥0 and "Renunciation filing" is also ¥0 at the Legal Affairs Bureau. Costs come from peripheral documents: family register copy (¥450), residence record, passport applications. After losing Japanese nationality, long-term residence in Japan requires either a visa status change (¥4,000) or a spouse visa, etc. Legal penalties exist but are rarely enforced in practice, and many "de facto dual nationals" exist in a gray zone.

Main Patterns Top 10

Cost Breakdown

Typical citizenship-related costs:

• Renunciation filing: ¥0 (Legal Affairs Bureau)
• Selection filing: ¥0 (city office or Legal Affairs Bureau)
• Loss filing: ¥0 (city office; self, family, or public representative)
• Family register copy: ¥450/copy
• Removed register: ¥750/copy
• Original (pre-revision) register: ¥750/copy
• Residence record: ¥300/copy
• Seal certificate: ¥300/copy
• Visa status change (post-renunciation): ¥4,000
• Re-entry permit: ¥3,000-¥6,000
• Administrative scrivener consultation: ¥10,000-¥50,000
• International lawyer: ¥20,000-¥100,000/hour
• Foreign-side costs: separate (e.g., $725 for US naturalization)
• Notarization, apostille: ¥3,000-¥11,000

Most cases conclude under ¥50,000. Complex inheritance or tax matters can push lawyer fees into six figures.

Support for Tourists and Foreigners

English-language windows include the Nationality Section at Tokyo Legal Affairs Bureau (English by phone, email inquiries), citizen services at US/UK embassies in Tokyo, and the Immigration Bureau's Foreign Residents Support Center (FRESC, Yotsuya). Documents must be in Japanese, with translations attached for English support. Sending foreign procedure fees (e.g., US $725 naturalization) via Wise/Revolut saves 0.5-2% over SWIFT. After renunciation, returning to Japan on a tourist visa is limited to 90 days — long-term stays need a visa status application. Choose specialists in "nationality and international family law" — tourist visa-focused offices often can't handle these cases.

Procedure Flow (Foreign Acquisition → Loss of Japanese)

• STEP 1: Voluntarily acquire foreign citizenship (e.g., naturalization)
• STEP 2: Japanese nationality automatically lost from acquisition date (Art. 11)
• STEP 3: File "Loss of Nationality" at city office within 1 month
• STEP 4: Removed from family register
• STEP 5: Surrender Japanese passport at passport office
• STEP 6: If staying in Japan, apply for visa status (Immigration)
• STEP 7: Receive residence card, update resident record
• STEP 8: Update name/status on health insurance, pension, bank
• STEP 9: Re-issue My Number (foreigner version)
• STEP 10: Real estate and tax title updates

Full process usually 1-3 months.

Payment Methods

• Legal Affairs Bureau / city office: Cash or revenue stamps
• Immigration fees: Revenue stamps (¥4,000 etc.)
• Family register mail requests: Fixed-amount postal money order (¥450/copy)
• Foreign-side transfers: Wise/Revolut more favorable on FX
• US naturalization fee: $725 (USD wire required)
• Notarization: Cash, bank transfer
• Credit cards: Limited to some municipalities
• Online applications: Via My Number Portal (limited)
• Proxy applications: Power of attorney required

Example: Sending $725 from JPY via Wise costs ~0.5-0.8% in fees.

Watch Out For

• "Voluntary" requirement: Only active acquisition triggers auto-loss
• Dual from birth: No auto-loss — choose by age 22
• Filing duty violation: Penalties exist but rarely enforced
• Family register: Removed entry (not deleted) upon loss
• Tax impact: Japanese resident taxation follows separate logic from nationality
• Inheritance: Inheritance rights in Japan exist separately post-renunciation
• Re-naturalization: Tougher review after prior renunciation
• US IRS: US renunciation may trigger Expatriation Tax

5 Common Mistakes

1. Missing filing: Ignoring 1-month deadline after foreign acquisition
2. Using both passports: Gray zone but exposable via travel records
3. Missing age 22 selection: Misunderstanding "deemed selection"
4. Confusing tax matters: Renunciation ≠ non-resident status; watch double taxation
5. No specialist: General admin scriveners often can't handle nationality law

Pre-Departure Checklist

• Current nationality status (single/dual)
• Passport, family register, residence record ready
• Foreign-side costs (naturalization etc.)
• Wise/Revolut wire route secured
• Engage nationality-law specialist
• Reserve Legal Affairs Bureau or city office slot
• Visa status change documents ready
• Update bank, pension, health insurance
• Real estate and financial title plan
• US renunciants check IRS Expatriation Tax

FAQ

Q1: Is dual citizenship strictly illegal? A: Nationality Act takes single-nationality policy, but penalties are seldom enforced — gray-zone use exists.

Q2: What about dual-from-birth cases? A: File "Nationality Selection" by age 22. A reminder system applies after.

Q3: Renunciation fees? A: ¥0 for the Legal Affairs Bureau filing. Family register docs cost ¥1,500-¥5,000.

Q4: What happens to my Japanese passport after foreign acquisition? A: Japanese nationality auto-lost from acquisition date — surrender passport.

Q5: Can I live in Japan after renunciation? A: Need a visa (spouse, PR-spouse, work, tourist 90 days).

Editorial info: Yen Finder Editorial / Last verified June 2026.