What are the requirements for a birth certificate used in a dependent deduction application?
Sources: NTA public materials and practical guidance from this tool. Last updated: 2026-06-19. Tax rules may change; follow your local tax office’s latest requirements.
Brief answer: A birth certificate proves your lineal ascendant relationship with your parents. Typically, a notarized kinship certificate from a Chinese notary office or a certified birth medical certificate is required.
Detailed explanation
Japanese tax offices generally do not accept uncertified copies of domestic documents. Common practice is obtaining a kinship or birth notarization from a Chinese notary office proving the legal relationship between applicant and parents. Consular authentication from the Ministry of Foreign Affairs or Japanese embassy/consulate in China may be required depending on the tax office. If a household register (hukou) also proves the relationship, submit it with the birth certificate. If names differ from residence card romanization, attach an explanation or name-change proof. Relationship proof is critical for overseas parent deductions; final validity is determined by the tax office.