Quick Answer: Japan's banking system does not support joint accounts (共同口座). Couples and families manage shared finances through workarounds such as proxy cards (代理人カード), authorized bank book usage, or dedicated family expense accounts in one person's name. Child savings accounts (子供口座) can be opened by a parent on behalf of a minor.
Why Japan Has No Joint Accounts
Unlike many Western countries, Japanese banks do not offer accounts with multiple named holders. Each account is tied to a single individual's identity and My Number. This is rooted in Japan's strict anti-money-laundering regulations and the individual-based banking tradition. For foreign residents accustomed to joint accounts, this requires adapting your approach to household finances.
Workaround: Proxy Cards (代理人カード)
Several major banks offer proxy cards — a second ATM card issued to a family member for the same account:
| Bank | Proxy Card Available? | Conditions |
|---|---|---|
| Japan Post Bank | Yes | Spouse or family member living at same address |
| MUFG | Yes | Family member; apply at branch |
| SMBC | Yes | Family member; apply at branch |
| Mizuho | Yes | Family member; apply at branch |
| Sony Bank | No | — |
| SBI Shinsei | No | — |
Family Money Management Strategies
Child Savings Accounts (子供口座)
Parents can open savings accounts for minor children at most banks. Required documents typically include:
Q: Can my spouse access my bank account in an emergency?
With a proxy card, your spouse can make ATM withdrawals. For branch transactions, your spouse would typically need a power of attorney (委任状) issued by you. In medical emergencies, banks may have special procedures, but these are not standardized.
Q: Are there tax implications for family transfers?
Transfers between spouses or to children may be subject to gift tax (贈与税) if they exceed ¥1.1 million per year per recipient. Regular household expense transfers are generally not considered taxable gifts, but large one-time transfers may require reporting.
Disclaimer: Information is based on publicly available data as of early 2026. Banking products and tax rules may change. Please consult with a tax advisor for specific gift tax questions and verify bank policies directly.
