Multi-Family Offices: What They Offer and Who Needs One

As wealth grows beyond a certain level of complexity — multiple asset classes, multiple jurisdictions, multiple generations, multiple advisers — a different model of financial management becomes necessary. The multi-family office (MFO) is the answer that sophisticated global wealth has converged on: a dedicated, comprehensive service that manages the full spectrum of a wealthy family's financial affairs, not merely the investment portfolio.

Understanding what an MFO provides, how it differs from a private bank or wealth manager, what it costs, and whether you need one is important if your financial affairs have reached genuine complexity.

The Family Office Spectrum

Single Family Office (SFO): a private, dedicated office serving one ultra-high-net-worth family. The SFO employs its own CIO, investment team, tax specialists, legal counsel, and administrative staff. It operates entirely in the interests of the single family. The threshold for an SFO to be cost-effective is typically £50 million to £100 million or more of assets — at lower levels, the cost of maintaining permanent in-house expertise exceeds the value generated. SFOs are the preserve of the ultra-wealthy.

Multi-Family Office (MFO): serves multiple wealthy families, providing functionally similar services to an SFO but sharing the cost of infrastructure, investment expertise, and specialist capabilities across the client base. The cost efficiency allows genuine MFO-quality service from typically £5 million to £10 million of investable assets upwards. Some MFOs accept clients from £2 million; others have substantially higher minimums.

Private client division of a private bank or large wealth manager: Goldman Sachs Private Wealth Management, JP Morgan Private Bank, Coutts, Arbuthnot Latham, Cazenove Capital, Berenberg — these institutions offer service that is functionally similar to an MFO in some respects (consolidated investment management, some planning services) but embedded within a larger institution that has its own products to sell, its own balance sheet interests, and less flexibility to be truly independent.

Discretionary wealth manager: firms such as Rathbones, Quilter Cheviot, Investec, Brooks Macdonald provide high-quality discretionary portfolio management, typically with some planning support. They are investment-focused rather than full-service.

The distinction matters because the breadth of the service differs significantly.

What a Multi-Family Office Provides

The MFO service model typically encompasses:

Investment Management

At the core: constructing and managing the investment portfolio across all asset classes — listed equities, fixed income, alternative investments, private equity, hedge funds, direct property, infrastructure. The MFO's investment committee (typically led by a Chief Investment Officer) sets the asset allocation framework; the team implements it, selects external managers for specialist mandates, and monitors performance.

Key difference from a wealth manager: a genuine MFO operates on an open architecture basis — it can use any fund manager or product available in the market, without restriction. It does not manufacture or distribute its own products and has no incentive to favour in-house products. This independence is fundamental to the MFO model.

The MFO also provides access to alternative investments that individual investors cannot easily access directly: co-investment opportunities in private equity deals, seed investment in hedge funds, infrastructure debt, real assets. The pooled buying power of an MFO's combined client assets creates access that individual investors lack.

Consolidated Reporting

For an internationally mobile HNW family with assets in multiple jurisdictions — a SIPP in the UK, a QROPS in Malta, an offshore investment bond in the Isle of Man, a US brokerage account, investment properties in Spain and the UK, a life assurance policy in Liechtenstein — consolidated reporting brings all positions into a single, coherent view. This allows:

• True portfolio-level risk analysis (not just within each account).
• Currency exposure analysis across all holdings.
• Performance measurement on a comparable, net-of-costs basis.
• Compliance reporting for UK income tax, CGT, and overseas disclosure obligations.

Most individual investors with complex multi-jurisdictional assets cannot produce this analysis themselves. A specialist accountant can — but only on a periodic basis and at significant cost. An MFO provides it as a standard, ongoing service.

Tax Planning and Compliance

The MFO does not replace the family's tax adviser but works closely alongside them (or, in some MFOs, provides this service in-house). The integrated nature of the service means that investment decisions are made with constant awareness of their tax implications: timing of disposals, use of annual CGT allowance, ISA and pension contributions, offshore bond encashment, residency changes.

For internationally mobile families with obligations in multiple jurisdictions — UK income tax and CGT, US worldwide income taxation (for US citizens or green card holders), the tax regimes of foreign jurisdictions where assets are held — the coordination of multi-jurisdictional compliance is complex and benefits from centralised oversight.

Legal and Structuring

The MFO coordinates with solicitors, offshore trustees, and family trust companies to maintain the family's legal and structuring framework: trust deeds, power of attorney documentation, wills across jurisdictions, corporate structures for investment holding, and family limited partnerships.

For internationally mobile families with children in different countries, property in multiple jurisdictions, and a trust structure established decades ago, the coordination of legal documentation and structuring reviews requires ongoing professional attention that the MFO provides as a matter of course.

Family Governance and Next Generation

For multi-generational wealth, the MFO often provides family governance support: facilitating family meetings, documenting family investment principles, preparing the next generation for the responsibilities of inherited wealth. Investment education programmes, mentoring young adults on financial literacy, and introducing the next generation to the MFO's services over time are increasingly standard components.

The purpose: to reduce the well-documented risk of intergenerational wealth dissipation (the "shirtsleeves to shirtsleeves" problem, which exists in multiple cultural variants in many languages, suggesting its universality).

Concierge and Administrative Services

At the high end: management of philanthropy (charitable foundation governance, grant-making strategy); art advisory and management (acquisition strategy, valuation, insurance, storage, loan to exhibitions); aircraft and yacht management; property management coordination. These services vary by MFO and by the scale and nature of the client relationship.

More commonly, MFOs provide: coordination of insurance reviews, centralised storage of key documents, travel and residency planning coordination, and management of relationships with multiple professional advisers (ensuring they are working coherently rather than at cross-purposes).

The Fee Structure

MFO fees are less standardised than fund or wealth management fees, but typical structures include:

Annual retainer: a fixed fee covering administration, consolidated reporting, planning services, and general advisory. Range: approximately £20,000 to £100,000 per year depending on the complexity of the relationship.

Investment management fee: an AUM-based fee on assets under management, typically 0.5 to 1.0%. For very large mandates (£20m+), this may be negotiated lower.

Performance fee: some MFOs charge a performance fee on investment returns above a hurdle rate; others do not. Avoid performance fees unless the structure includes a high-water mark and a credible hurdle rate.

Transaction fees: some MFOs charge on certain investment transactions; others include this within the AUM fee.

Total cost for a client with £10 million under management and moderate complexity: approximately 1.0 to 1.5% per annum all-in. For very large or very complex relationships, the total cost per pound of assets falls with scale.

The Crossover Point: When Does an MFO Make Sense?

The appropriate point to consider MFO-level services:

• Financial assets of £5 million or more, particularly where those assets span multiple jurisdictions or include significant alternative investments.
• Multi-jurisdictional tax obligations: UK tax residency combined with overseas assets, foreign source income, or international mobility creates complexity that a single domestic adviser handles poorly.
• Multiple generations with divergent planning needs: where estate planning, trust management, and next-generation preparation are active requirements.
• Significant alternative assets: private equity, direct property portfolio, art, or other non-standard assets that require specialist oversight alongside traditional financial portfolios.
• Dissatisfaction with current advisers working in silos: if your tax adviser, investment manager, and solicitor are each doing their jobs but not coordinating effectively, the cost of that inefficiency — in missed opportunities, conflicts, and planning gaps — may exceed the MFO fee.

How to Choose an MFO

Independence: the most important criterion. Does the MFO earn fees from product providers or fund managers? (It should not.) Is the investment mandate genuinely open architecture, or are there preferred provider lists driven by commercial agreements?

Regulatory status: an FCA-authorised and regulated firm in the UK. Check the FCA Register. Verify that the investment management activity (not just the financial planning) is regulated.

Investment track record: ask for audited performance records across multiple time periods and multiple client mandates. GIPS (Global Investment Performance Standards) compliance is a useful indicator of rigorous performance reporting. Be sceptical of firms that cannot or will not provide audited performance data.

Team depth and continuity: the relationship manager matters, but the quality of the investment team, the head of tax, and the legal coordinator matters equally. What are the qualifications of the senior staff? What is the firm's staff retention track record?

Client references: ask to speak with existing clients of similar scale and complexity. A reputable MFO will facilitate these introductions.

Alignment of interest: does the MFO have any of its own capital invested alongside clients? Do senior staff have meaningful personal co-investment in the same strategies they recommend to clients? Alignment of interest is the clearest indicator that their advice reflects genuine conviction.

This guide is for information purposes only and does not constitute financial or legal advice. The appropriateness of any wealth management structure depends on individual circumstances. Always take independent professional advice.

How Global Investments Can Help

Global Investments provides comprehensive wealth management and advisory services for internationally mobile, high-net-worth clients — combining investment management, tax-efficient structuring, and planning coordination across jurisdictions. We work on a genuinely independent, open-architecture basis and maintain close relationships with specialist legal, tax, and structuring advisers worldwide. Contact us to discuss how we can simplify the complexity of your financial affairs.