Japan's self-written will storage system at Legal Affairs Bureaus (Civil Code Enforcement Act Art. 11-2, effective July 10, 2020) has now exceeded 50,000 cumulative filings as of May 2026, running at over 10,000 new filings per year.
Three Core Benefits
| Traditional Issue | Storage System Benefit |
|---|---|
| Loss risk in home storage | Legal Affairs Bureau preserves original |
| Tampering risk by heirs | Government storage prevents tampering |
| Validation procedure (kennin) required | No kennin needed — immediate succession |
| Heirs may not learn of the will | Notification system at testator's death |
Filing Process
- Draft the will following Civil Code Art. 968 form requirements (handwritten, dated, signed, sealed)
- Reserve appointment at the Legal Affairs Bureau covering the testator's residence, registered domicile, or property location
- Prepare documents: will, photo ID, certificate of residence (within 3 months), application form, ¥3,900 in revenue stamps
- Personal appearance required (no agent filing); formal review by staff and storage certificate issued
- Keep storage certificate safely; heirs use it to locate the will after death
Free Tool Related to This Article
Japan Inheritance Tax Calculator
Try our free simulator related to this topic.
Try for free →At the Testator's Death
Designee Notification (advance application): up to 3 designated parties receive notice automatically. Heir Notification (post-application): when one heir obtains a will information certificate, all legal heirs receive notice.
No kennin (validation) required — saves 2-4 months of family court proceedings.
Self-Written (Storage) vs Notarized Will
| Item | Self-Written (Stored) | Notarized |
|---|---|---|
| Drafted by | Testator (handwritten) | Notary public (dictated) |
| Witnesses | Not required | Two required |
| Fee | ¥3,900 | ¥10,000-100,000+ (asset-based) |
| Validation | Not required | Not required |
| Anti-tampering | Bureau storage | Notary office storage |
| Form-defect risk | Form-only check (content risk remains) | Notary review (no content risk) |
| Hospital/home drafting | Bureau visit required | Notary can visit |
Choose self-written storage when: assets are simple, no significant heir conflict expected, cost-conscious, testator can write. Choose notarized will when: high-value/complex assets, anticipated heir disputes, testator is elderly or ill, handwriting difficulty.
Common Pitfalls
- Date defects: "May, Reiwa 7" (no specific date) → invalid
- Missing seals: seal on every page recommended
- Improper corrections: must use double-line + seal + reason + signature
- Unidentifiable bequests: "all real estate" needs registry information
- Forced heirship infringement: heirs may make share infringement claims (iryubun)
Why Lawyer Involvement Matters
The Bureau performs form-only review, not content review. A lawyer adds: 1. Legal validity check (forced heirship, identification specificity) 2. Tax optimization (inheritance, gift tax planning) 3. Dispute prevention statements (fugengi) 4. Executor designation 5. Multi-will management (revocation, new drafting)
Filing Statistics
| Year | New Filings | Cumulative |
|---|---|---|
| 2020 (July-Dec) | ~8,000 | ~8,000 |
| 2021 | ~12,000 | ~20,000 |
| 2022 | ~11,000 | ~31,000 |
| 2023 | ~10,500 | ~41,500 |
| 2024 | ~11,500 | ~53,000 |
| 2025 (May) | ~4,500 | ~57,500 |
Steady ~10,000/year. Still small vs notarized wills (~110,000/year) but growing as awareness increases.
Conclusion
Japan's self-written will storage system offers no kennin + anti-tampering + low cost — practical for simple estates. Crossing 50,000 cumulative filings signals adoption. For complex estates, anticipated disputes, or tax optimization, consult an inheritance lawyer for content drafting and storage strategy.
