Notarize 委任状 (Power of Attorney) in Thailand for Japan
Japan acceded to the Hague Apostille Convention in 1970 and accepts Thai MFA Apostilles since 22 Dec 2024. A 委任状 signed in Thailand is used with 法務局 (real-estate registration), banks, 入管 (immigration matters) and courts. Translation into Japanese with a 翻訳証明書 (translator's affidavit) is mandatory for most Japanese authorities.
Quick Answer: 委任状 (Power of Attorney) → Japan
"Japan acceded to the Hague Apostille Convention in 1970 and accepts Thai MFA Apostilles since 22 Dec 2024. A 委任状 signed in Thailand is used with 法務局 (real-estate registration), banks, 入管 (immigration matters) and courts. Translation into Japanese with a 翻訳証明書 (translator's affidavit) is mandatory for most Japanese authorities."
- 01Do I need to have the 委任状 also notarized by a 公証人?
- Not if it is signed in Thailand — the Thai Notary + MFA Apostille chain substitutes for 公証人 notarization.
- 02Is a 翻訳証明書 mandatory?
- Yes for immigration and most 法務局 filings. Include the translator's name, seal and contact details.
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Key Facts
- Accepted by
- 法務局, 入管, Japanese banks, family courts
- Chain
- TH Notary → MFA Apostille + Japanese translation + 翻訳証明書
- Language
- Bilingual JP/EN preferred; JP translation is required
- All-in cost
- THB 4,500 – 8,000
Authentication Chain (Full Process)
- 1. Draft 委任状 in bilingual JP/EN.
- 2. Grantor signs before Thai Notarial Attorney.
- 3. MFA Apostille (1 business day).
- 4. Attach certified Japanese translation + 翻訳証明書; courier to Japan.
Common Japanese use cases
Inheritance (相続登記) at 法務局, closing a Japanese bank account, immigration change-of-status representation, appointing a 行政書士 for visa work.
FAQ (2)
Do I need to have the 委任状 also notarized by a 公証人?
Not if it is signed in Thailand — the Thai Notary + MFA Apostille chain substitutes for 公証人 notarization.
Is a 翻訳証明書 mandatory?
Yes for immigration and most 法務局 filings. Include the translator's name, seal and contact details.