Family Offices and High-Net-Worth Planning for Tech Wealth

A family office is the management layer that sits between household wealth and every financial, legal, tax, and lifestyle decision that wealth triggers. At $50M+ of investable net worth, the coordination cost of running a household with a dozen independent service providers (investment manager, CPA, estate attorney, insurance broker, private bank, real estate manager, concierge) exceeds the cost of consolidating them under one roof. Above $100M, a dedicated single-family office often makes sense. Below $25M, a multi-family office or a sophisticated private bank relationship usually serves better.

Tech wealth creates specific family office use cases that general-wealth firms don’t always handle well. Concentrated single-stock positions that require 10b5-1 plans, exchange funds, and staged deconcentration. QSBS stacking for founders. Cross-border tax planning for internationally mobile operators. Private-market allocation that uses the operator’s network (co-investment with former colleagues’ funds, direct deal access). These are not the same as managing a diversified portfolio for a family that inherited wealth.

This guide covers when a family office makes sense, the SFO-versus-MFO tradeoff, what these firms actually do day-to-day, the fee structures and economics, and the questions to ask before engaging.

When a family office starts to make sense

The rough thresholds:

Net worth	Best fit
Under $10M	Fiduciary CFP, private-bank relationship, or DIY with accountants
$10-25M	Multi-family office engagement or UHNW RIA
$25-100M	Multi-family office or nascent SFO
Over $100M	Dedicated single-family office

These numbers are directional. A founder with $15M of cash and $85M of pre-IPO stock facing an imminent liquidity event needs the planning capacity of a family office now, not when the cash arrives. A retired executive with $40M in index funds and no complications may do fine with a good fiduciary advisor at 0.5% AUM.

The question is complexity, not just size. Indicators that you have outgrown a standard advisor:

• Multiple entities (LLCs, trusts, GRATs, family partnerships).
• Concentrated single-stock position over $5M.
• QSBS or other complex tax-attribute holdings.
• Private-market assets (direct investments, GP stakes, illiquid fund interests).
• Multi-state or international tax exposure.
• Charitable structure (DAF plus private foundation, CRT, multiple beneficiaries).
• Estate planning with irrevocable trusts that need ongoing administration.
• Multi-generational wealth transfer or business succession in progress.

Three or more of these together suggests the complexity has exceeded what a standard advisor can coordinate.

Single-family office (SFO)

An SFO is an entity owned and controlled by a single family that hires its own staff to manage the family’s wealth. Typical staffing:

• Chief investment officer (leading the portfolio)
• Controller or CFO (financial reporting, cash management)
• Tax director (coordinating with outside CPAs, handling complex filings)
• Operations and administration
• Potentially: legal counsel, concierge staff, philanthropy director

Costs are substantial. A fully staffed SFO serving one family typically runs $2-10M per year in direct overhead. This is economical at $300M+ of investable assets; below that, the percentage is high.

Advantages of an SFO:

• Complete alignment of interests; staff work only for your family.
• Customization across every service area.
• Confidentiality (no one outside the office knows your situation in detail).
• Legacy and continuity across generations.
• Direct control over investment decisions and strategic planning.

Disadvantages:

• High fixed cost; inefficient below ~$250M of assets.
• Operational overhead (payroll, benefits, HR, office space for staff).
• Key-person risk; losing a CIO is disruptive.
• Limited diversity of thought; a single team lacks the breadth of larger firms.

Many SFOs evolve into “virtual family offices” with a small internal staff (CIO, controller) that coordinates outsourced providers (CPA firm, law firm, investment managers, custodians). This preserves some SFO advantages at lower cost.

Multi-family office (MFO)

An MFO is a firm that serves multiple wealthy families as clients, typically 20-200 families per firm. Examples: Bessemer Trust, Pitcairn, Tiedemann, Pathstone, Cresset, Glenmede, Veris. Fees are typically 0.5-1.0% of AUM, sometimes with minimum fees or tiered pricing.

Advantages:

• Lower cost per family than SFO because infrastructure is shared.
• Diverse professional staff with specialized expertise.
• Independent thought partnership (the MFO has seen many similar situations).
• Continuity through staff transitions (multiple people know your file).
• Strong negotiating position with external providers (custodians, managers, insurance).

Disadvantages:

• You are one of many clients; service intensity is lower than SFO.
• Less customization; MFOs work from standard playbooks.
• Potential conflicts of interest with in-house investment products.
• Confidentiality depends on firm culture; not as private as SFO.

For tech wealth in the $25-150M range, an MFO is usually the right fit. The cost structure is economical, the expertise is deep enough, and the coordination across tax, investment, and estate functions gets handled in one place.

What family offices actually do day-to-day

The caricature is “managing the portfolio.” The reality is broader and skews heavily toward coordination and administration.

Typical ongoing activities:

• Quarterly investment review and rebalancing across liquid and illiquid holdings.
• Cash flow management (predicting tax bills, funding living expenses, managing reserves).
• Tax planning coordination with CPAs (quarterly estimates, loss harvesting, bracket management).
• Trust administration (G RAT payments, CRT distributions, trustee communication).
• Estate plan maintenance and updates as law or family circumstances change.
• Insurance review (property, liability, life, long-term care, directors’ and officers’).
• Bill payment and household financial administration (for SFOs and some MFOs).
• Philanthropy coordination (DAF grants, private foundation operations).
• Real estate management (personal residences, vacation homes, investment properties).
• Document retention and digital asset management.

One-time project support:

• Pre-liquidity planning (2-3 years before an expected exit)
• Deal support (acquisition closing, large secondary, fund-level liquidity)
• Family transitions (marriage, divorce, death, generational wealth transfer)
• Relocation (state or country change)
• Major philanthropic initiatives (foundation setup, large one-time gifts)

The time split is heavily weighted toward ongoing administration. If you are evaluating a family office and the pitch is primarily about investment returns, you are getting the wrong pitch. The value is coordination.

Private-market allocation for tech wealth

Tech operators often want or have access to private-market deals: angel investments, venture fund LP interests, GP stakes, direct company investments through their network. Family offices typically help structure this portion of the portfolio.

Typical allocations for tech-wealth families:

Asset class	Typical range
Public equities (direct and funds)	20-40%
Fixed income	5-15%
Private equity and venture capital	15-30%
Real estate	5-15%
Hedge funds and absolute return	5-15%
Cash and equivalents	3-10%
Alternative strategies and direct deals	5-15%

This is heavier on private markets than the traditional 60/40 framework. The rationale: operators have information and access advantages in private markets that they do not have in public markets. If you can get into a top-quartile VC fund, your expected return is materially higher than public equity. But access is constrained; family offices help secure and manage it.

Co-investment programs are common. When a GP makes a direct investment, LPs may get the opportunity to co-invest on the side at the same terms. This reduces the GP’s management fee drag and allows higher concentration in conviction positions.

Fee structures and economics

MFO fees are typically 0.5-1.0% of AUM, declining with scale. A $50M client at 0.75% pays $375k per year. A $150M client at 0.50% pays $750k per year.

Some firms charge a fixed retainer regardless of AUM (typical range $100-500k per year for tier-one MFOs). This aligns incentives better (no steering toward fee-heavy products) but can be economically wrong for smaller clients.

Embedded fees matter. The MFO’s fee is often only part of the total. Underlying investment managers (hedge funds at 2-and-20, private equity at 2-and-20, separately managed accounts at 0.5-1.0%) add meaningful additional drag. Total cost of owning a $50M portfolio through an MFO is often 1.5-2.5% per year all-in.

SFO fees are whatever the family spends on staff and infrastructure, typically expressed as a percentage of assets under management: $3M annual cost on $300M of assets is 1.0%, comparable to the top end of MFO pricing but with complete alignment.

Interviewing a family office

Before engaging, ask about:

1. Fiduciary status. Are they acting as a fiduciary on all advice, including on in-house products?
2. Fee transparency. What is the total all-in cost including underlying managers?
3. Investment philosophy. What is their approach to concentrated positions, private markets, alternative investments? Does it match yours?
4. Staff tenure and succession. Who is the primary advisor for your family? What happens if they leave?
5. Technology and reporting. Can they provide consolidated reporting across custodians? What does the quarterly statement look like?
6. References. Can they put you in touch with two or three current clients of similar complexity?
7. Tax and estate integration. Do they coordinate with your existing CPA and attorney, or do they insist on their own?
8. Philanthropy handling. How do they help structure giving, and what is the fee structure for DAF or foundation management?

The decision to engage a family office is hard to reverse; switching firms is disruptive. Taking six months to evaluate three or four candidates is the right pace.

Frequently asked

Is a family office the same as a wealth manager? No. Wealth managers typically focus on investment management and retirement planning. Family offices handle investment plus tax, estate, philanthropy, and lifestyle coordination. The scope is broader.

Can I run my own SFO as a solo operation? Technically yes (a “virtual family office” is essentially this with some outsourcing), but the coordination burden on you is high. Most successful SFOs have at least a CIO and a controller on staff.

What’s the difference between a family office and a private bank? Private banks offer wealth management services but as one line of business inside a bank. Family offices are more tailored, often independent, and typically broader in scope. Private banks are more product-driven; family offices are more advisory-driven.

Do I need an attorney outside the family office? Usually yes. Family offices coordinate with outside counsel on estate planning, trust administration, and transactions. Some MFOs have in-house legal staff, but separation of advice and document production is generally healthy.

What happens to the family office at the patriarch’s or matriarch’s death? This is a standard continuity question. SFOs typically continue under successor leadership with pre-designed governance. MFOs continue serving the family or the successor trust. The estate plan should specifically address continuation of the family office relationship.

Next step

If your net worth has passed $25M or is on a clear trajectory to do so within 24 months, start interviewing multi-family offices now. The family office fit assessment estimates where on the spectrum your situation sits. For complex pre-exit situations (founder pre-acquisition, executive pre-IPO), engaging a family office 12-18 months before the liquidity event lets them do meaningful planning rather than reactive cleanup.