1. Core Issues: Aging-Driven Wealth Risks
According to Sumitomo Mitsui Trust Bank and Bloomberg 2026 research:
• Financial assets held by people aged 65 and above are estimated at approximately ¥315 trillion (~$2 trillion), including cash, securities, and other liquid assets. These estimates highlight the potential scale of wealth management challenges.
• Elderly investors show lower trading activity, with some assets remaining idle for extended periods, increasing management and risk control difficulty.
• Japan’s aging dependency ratio is among the world’s highest, further amplifying the scale and complexity of the issue.
These factors could affect individuals, families, and overall financial system liquidity, underscoring the importance of anticipating long-term risks.
2. Understanding “Dementia Money” Risks
“Dementia Money” refers to assets that may be mismanaged due to cognitive decline in the elderly. Key potential risks include:
① Asset Idle Reducing Market Liquidity
Elderly investors tend to reduce investment activity, which may slow capital market activity and resource allocation efficiency.
② Potential Mismanagement and Fraud Risk
Cognitive decline may lead to financial missteps or increased exposure to potential fraud. Emphasizing this as a potential risk, not an inevitable outcome.
③ Increased Family and Legal Management Burden
Japan’s adult guardianship system is complex. Families may struggle to manage funds when cognitive decline reaches a critical stage, potentially leading to frozen or restricted assets.
3. Trends and Financial Innovations
① Family Support Tools by Banks and Securities Firms
Some institutions provide family support accounts or trust products, enabling joint management of assets before cognitive decline progresses.
② Legal Reforms to Guardianship System
Japan’s Ministry of Justice is simplifying adult guardianship procedures, increasing flexibility so assets can be effectively managed under legal supervision, reducing family and societal risk.
③ FinTech Interventions
Financial technology platforms offer asset monitoring, risk alerts, and family-shared management tools, helping reduce idle or mismanaged assets while enhancing the elderly clients’ investment experience.
4. Wealth Management Strategy Recommendations
① Early Planning and Risk Anticipation
Families should establish long-term wealth plans, including proxies, family trusts, and advance directives, to secure and transfer assets before cognitive decline occurs.
② Elderly-Friendly Financial Services
Financial institutions should provide customized consultation, co-management solutions, and easy-to-understand products to improve management efficiency and reduce potential errors.
③ Strengthening Family Wealth Communication
Only about one-third of elderly individuals are willing to share their financial information. Enhanced communication helps understand real intentions and prevent idle or misused assets.
④ Financial Education for Aging Population
Governments and financial institutions should cooperate on elderly financial education to raise awareness of cognitive decline and potential financial risks, providing a knowledge base for wealth strategy transformation.
Conclusion
“Dementia Money” is not unique to Japan—it is a challenge all aging societies may face. Effective wealth management is not only about asset accumulation but also about forward-looking planning, risk mitigation, and communication mechanisms to ensure assets are safely preserved and passed on. Through service innovation, legal reforms, and financial education, Japan provides valuable insights for global wealth management in aging societies. Wealth management institutions and investors should use scientific and systematic concepts and tools to ensure asset security and achieve steady growth of wealth.
