Ultra High Net Worth Client Services

Private Client Services in Japan

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Specialist UHNW Services

Argentum provides specialist advisory services for ultra-high-net-worth individuals, families, and international family offices requiring trusted support in Japan. We act both as a direct advisor to private clients and as a local execution partner for overseas family offices, private banks, and wealth managers, supporting clients who are investing into Japan or have family members already based here.

For estate planning and cross-border structuring, we coordinate closely with legal, tax, and banking professionals in Japan to ensure efficient execution aligned with each client’s broader objectives. This includes advising on how Japanese tax considerations—particularly inheritance and gift tax—interact with existing overseas structures. We are structured to work seamlessly alongside international advisors, acting as a trusted, on-the-ground extension of your family office services.

This typically includes:

  • Supporting a client acquiring a residence in Japan
  • Assisting a family member relocating to Tokyo
  • Integrating Japanese inheritance tax considerations into existing estate structures
  • Specialist Japan-US cross-border wealth management planning

Our role is to enhance and protect the existing client relationship while delivering local expertise aligned with your overall advisory strategy.

Through our established relationships, we provide access to off-market real estate opportunities, typically starting from USD 15 million (approximately ¥2.5 billion) and above. These opportunities are not publicly listed, reflecting the importance placed on discretion, controlled access, and the privacy of both buyer and seller.

Our network provides access to some of Japan’s most desirable assets, including:

  • Prime central Tokyo residences
  • Ultra-luxury condominiums
  • Prestige ski properties in Niseko and Hakuba
  • Strategic land for bespoke development

Where appropriate, we can introduce leading Japanese architects, developers, and construction partners, or collaborate directly with a client’s existing global advisors. In many cases, property acquisition also requires alignment with broader estate and succession planning, particularly where Japanese inheritance tax exposure may arise.

At this level of the market, transactions are typically private and relationship-driven. Both buyers and sellers expect the highest standards of confidentiality, and we operate with a discreet, low-profile approach at all times. Our role extends beyond sourcing property to managing complex transactions in a market that requires local knowledge, cultural understanding, and trusted relationships.

Due to the nature of these engagements, many opportunities are handled on a confidential and referral basis. For family offices, private banks, or ultra-high-net-worth individuals seeking a trusted partner in Japan, we welcome discreet enquiries.

Confidential Enquiry

Family Office & UHNWI Clients

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Frequently Asked Questions

Argentum provides end-to-end wealth management and strategic advisory services for ultra-high-net-worth individuals, families, and family offices. This includes investment management, real estate advisory (including luxury and off-market property), retirement planning, tax and estate structuring, and cross-border financial coordination.

Our approach is fully integrated, ensuring all aspects of a client’s financial position are aligned into a cohesive long-term strategy.

Argentum can work closely with international family offices, private banks, and wealth managers to support their clients needs in Japan. We act as a trusted, on-the-ground partner, providing local expertise while integrating seamlessly with the client’s existing advisory framework.

Our role is to coordinate with global advisors—including legal, tax, and banking professionals—to ensure that Japanese investments are aligned with the client’s broader cross-border strategy. This is particularly important in areas such as real estate acquisition, estate planning, and managing potential Japanese inheritance tax exposure.

Yes. Argentum advises on high-value real estate transactions, including off-market and luxury properties that are not publicly listed.

At the ultra-high-net-worth level, many transactions are conducted privately, and access depends on trusted relationships, local networks, and discretion. Argentum provides both access and execution support throughout the process.

Yes. Argentum takes a holistic approach to wealth management, integrating investment portfolios, property holdings, and long-term financial planning into a single coordinated strategy.

This is particularly important for high-net-worth clients, where real estate often plays a key role in wealth preservation, diversification, and legacy planning.

Argentum works with a broad range of clients across its core advisory business; however, our UHNWI private client services are a specialist offering reserved for a select group of clients and family office relationships.

These services are typically provided in situations involving more complex, high-value requirements—such as significant real estate acquisitions, cross-border structuring, or bespoke advisory mandates in Japan. They sit alongside our ongoing client relationships, offering an additional layer of support where a higher degree of discretion, coordination, and execution is required.