The term "family office" conjures a dedicated floor of investment professionals managing a nine-figure fortune, and for a small number of Canadian families, that is exactly what it is. For a much larger number of successful business owners, the useful version of the same idea is considerably smaller, less formal, and worth considering earlier than the term itself suggests.
Key Takeaway
A full single-family office, with dedicated in-house staff, typically only makes economic sense above a substantial investable asset threshold, often cited in the range of $100 million or more. Below that level, a lighter structure, coordinating existing advisors under a single point of accountability, delivers much of the same benefit at a fraction of the cost, and starts making sense considerably earlier.
What A Family Office Actually Is
At its core, a family office coordinates a family's investment management, tax planning, estate planning, and often philanthropic or next-generation education needs under one integrated structure, rather than each function being handled independently by separate, uncoordinated advisors. A single-family office employs dedicated staff exclusively for one family. A multi-family office provides similar coordination as a shared service across several unrelated wealthy families, at meaningfully lower cost per family than a dedicated staff would require.
The Wealth Threshold Question
Industry commentary commonly cites a threshold in the $100 million range of investable assets before a full, dedicated single-family office becomes cost-justified relative to simply paying for the same expertise through external advisors as needed. Below that level, the fixed cost of dedicated staff rarely pencils out against what a well-coordinated external advisory team can deliver.
The Lighter Version Most Owners Actually Need
For a successful business owner well below that threshold, often still with significant wealth concentrated in the operating business itself, the practical need is rarely a dedicated office. It is coordination: making sure the corporate tax advisor, the personal tax advisor, the estate lawyer, and the investment manager are actually talking to each other about the same overall picture, rather than each optimizing their own piece in isolation. A fractional CFO or a single quarterback advisor role can deliver a meaningful share of a family office's coordination value without the fixed overhead of dedicated staff.
What It Actually Costs To Run One
A full single-family office, including investment staff, tax and legal coordination, and administrative support, commonly runs well into seven figures annually in operating costs, which is precisely why the underlying asset base needs to be large enough to make that overhead proportionate. A multi-family office or a coordinated external advisory approach can deliver similar functional benefit for a small fraction of that cost, scaling with the actual complexity of the family's affairs rather than a fixed headcount.
A Practical Decision Framework
The more useful question for most successful Canadian business owners isn't "do I need a family office," it's "are my existing advisors actually coordinated with each other." If the corporate tax advisor doesn't know what the estate lawyer is planning, and neither is coordinating with whoever manages personal investments, that gap itself is worth addressing, well before the label of a formal family office becomes relevant at all.
Frequently Asked Questions
At what net worth does a family office actually make sense?
What's the difference between a single-family and multi-family office?
Can a fractional CFO provide similar value to a family office?
What's the biggest sign that a family's advisory structure needs better coordination?
References
- Family Office Exchange. (2025). Family office structuring and cost benchmarks. familyoffice.com
- Campden Wealth. (2026). Global family office report. campdenwealth.com
This article is provided for general informational purposes and is not investment, legal, or tax advice. Family office structuring is highly specific to each family's circumstances, work with qualified advisors to determine the right structure for your situation.