The TM Group Blog

What is a private family office?

Written by Allie | May 5, 2026 5:51:48 PM

 

What is a private family office?

For ultra-wealthy families, managing significant wealth across investments, real estate, estate planning, and family governance requires far more than a traditional financial advisor can offer. A private family office is a dedicated structure built to address exactly that, providing comprehensive, tailored oversight of a family's financial and personal affairs.

As family offices grow more complex, many turn to experienced partners like TMC to help modernize operations, streamline financial management, and gain greater visibility across their portfolios.

Whether serving a single family or multiple families, these organizations have become the gold standard for preserving and growing generational wealth across multiple generations.

 

Understanding private family offices

A private family office is a private entity established to manage the assets and financial affairs of one or more wealthy families. Unlike conventional financial services firms, a family office is built entirely around the needs of its clients, offering deeply personalized strategies that span investment management, tax planning, estate planning, and beyond. Together, these services keep the family's long-term legacy at the center of every decision.

 

How private family offices are structured

Most family offices operate with a dedicated internal team (often including a managing director, senior associates, and specialized advisors) all focused exclusively on the family's interests. The structure varies depending on complexity and scale, but generally includes divisions for investment management, financial control, legal and compliance, and family governance. This integrated setup allows for seamless coordination across all aspects of a family's wealth.

 

Private family office costs

Running a single family office is a significant undertaking. Annual operating costs typically range from $1 million to well over $5 million, depending on staffing, services, and the complexity of the family's portfolio. These costs cover salaries, technology, legal counsel, compliance, and more.

Because of this, single family offices are generally reserved for families with $100 million or more in investable assets. Families with smaller portfolios often turn to multi-family office arrangements or virtual models to access similar family office services at a more manageable cost.

 

Types of family offices

Let’s unpack the primary types of family offices.

Single-family office (SFO)
A single family office exists solely to serve one family. It is the most private and customizable model available, giving the family complete control over how their wealth is managed, invested, and governed. For ultra-wealthy families with complex holdings—including private equity, real estate, and family business interests—the SFO offers unmatched depth and discretion. Every team member, every process, and every system is aligned around that one family's goals.

Multi-family office (MFO)
A multi-family office serves multiple families under one shared structure, allowing clients to benefit from institutional-grade family office services while sharing operational costs. This model is a strong fit for wealthy families who want a high level of personalization without bearing the full expense of a standalone office. Clients in a multi-family office typically gain access to sophisticated investment management, wealth planning, and governance support—often at a fraction of the cost of building their own infrastructure.

Virtual family office (VFO)
A virtual family office takes a different approach, assembling a network of independent specialists (including legal, tax, investment, and estate planning professionals) who collaborate on behalf of the family without a centralized physical office. This model offers significant flexibility and can be scaled up or down based on the family's evolving needs. It is particularly appealing for families who value access to top-tier private wealth expertise without the overhead of a full-time staff.

 

Key functions of a private family office

No two family offices are identical, but most share a common set of core responsibilities that work together to protect and grow the family's wealth over time.

Investment management
At its core, a family office exists to grow and protect the family's wealth. Investment management typically spans a broad range of asset classes—from private equity and real estate to public markets and alternative investments. Strategies are built around the family's risk tolerance, liquidity needs, and long-term objectives, with portfolio management overseen by experienced professionals dedicated to the family's interests.

Operational infrastructure
Behind every high-performing family office is a strong operational foundation. This includes the technology systems, reporting tools, and workflows that keep everything running efficiently. Modern family offices increasingly rely on integrated ERP and financial platforms—often implemented and tailored by partners like TMC—to consolidate data, automate processes, and deliver real-time visibility across the entire portfolio.

Financial control
Sound financial control ensures that every dollar is accounted for, reported accurately, and aligned with the family's broader goals. This includes bookkeeping, financial reporting, cash flow management, accounts payable, and tax preparation across potentially dozens of entities. Robust financial controls are the backbone of a well-functioning family office.

Entity administration
Wealthy families often hold assets across a complex web of legal entities: trusts, LLCs, holding companies, and more. Entity administration involves maintaining compliance, managing filings, and keeping the legal structure of the family's wealth properly organized. This function is critical for effective estate planning and minimizing tax exposure across generations.

Governance
Family governance goes beyond financial management. It encompasses the structures and processes that guide how family members make collective decisions about their wealth. This includes family meetings, family charters, succession planning, and the involvement of younger family members in the wealth management process. Strong governance helps prevent conflict and ensures alignment around shared values and goals for future generations.

Risk oversight
From market volatility and cybersecurity threats to reputational risk and regulatory exposure, family offices face a wide range of risks. Dedicated risk oversight functions identify, assess, and mitigate these threats—protecting not just the family's assets but their personal information and privacy as well.

 

Partner with TMC

Now part of TMC, TMG brings decades of experience delivering innovative financial and operational solutions for family offices, powered by Microsoft Dynamics 365 Business Central. From multi-entity accounting and advanced reporting to wealth and investment management tools, TMC helps family offices build the operational infrastructure they need to run with confidence.

With deep expertise across both single and multi-family office environments, TMC translates complex financial structures into scalable, connected systems—giving you the clarity and control needed to manage and grow generational wealth.

Explore what TMC can do for your family office.