The family office: A guide for fund managers

Author: The Carta Team

Read time: 9 minutes

Published date: 3 November 2025

Family office services offer ultra-high-net-worth families tailored investment management and wealth planning to preserve and grow assets across generations.

This article explains how to engage family offices as LPs, covering their unique structures, investment approaches, and the operational playbook required to meet their high expectations.

What is a family office?

A family office is a private advisory firm that manages the financial and personal affairs of an ultra-high-net-worth family, typically one with $30 million or more in investable assets. Originating in the 19th century with wealthy families like the Rockefellers, family offices have evolved from simple administrative hubs into sophisticated organizations that manage the wealth and investments for a single affluent family or a select group of families.

For you as a fund manager, they represent a distinct and influential class of limited partner (LP), an LP is an investor who commits capital to a private fund, like a venture capital (VC) or private equity (PE) fund, which is managed by a general partner (GP).

The primary purpose of a family office is to oversee and grow a family's assets across many generations. This long-term mission of wealth preservation directly shapes their investment philosophy and what they expect from the GPs they choose to back. Unlike some investors who focus on short-term gains, a family office thinks in terms of decades and legacy.

Understanding their unique motivations and operational needs is the first step for any fund manager looking to build a successful and lasting partnership with this important investor class.

What services do family offices provide?

Family offices provide a comprehensive suite of services designed to preserve and increase multi-generational family wealth. Core offerings include:

• Wealth management: Including investment advisory services, asset allocation, and risk management.
• Tax and estate planning: Structuring ownership and succession to ensure efficient wealth transfer and minimize estate taxes.
• Philanthropy and legacy planning: Managing charitable donations and impact investments to guide future generations.
• Family governance and succession planning: Establishing decision-making frameworks and financial education to prepare heirs for stewardship.

How do family office structures impact the GP relationship?

The way a family office is organized has a direct impact on how you, the fund manager, will interact with them. Knowing whether you're dealing with a single-family, multi-family, or virtual office is key to tailoring your fund's engagement, compliance, and communication strategy. Each of these structures creates different operational demands on your fund's back office.

The single-family office

A single-family office (SFO) is a private company created to manage the assets of just one family and is legally defined as being wholly owned and controlled by the family members it serves. This structure often means you'll be dealing directly with the family principals themselves or with a very small, dedicated team that reports to them, such as a chief investment officer.

The multi-family office

A multi-family office (MFO), provides family office services to several different families at once. This model often leads to more standardized operational processes, which can make them feel more like a traditional institutional investor.

The virtual family office

A virtual family office (VFO) doesn't employ a full in-house team. Instead, it coordinates a network of external, specialized advisors for legal, tax, and investment matters.

How do family offices approach private fund investing?

A family office's long-term, patient capital approach makes them an ideal LP for private market funds, and their importance to the ecosystem is substantial, with family offices having managed a combined $3.1 trillion in 2024. For new managers raising their first fund, this investor class is particularly important, as 70% of their LPs are unincorporated individuals and families.

Family offices are increasingly data-driven, a trend reflected in their heightened focus on specific performance metrics. A timely and accurate Schedule K-1 is not just a regulatory requirement; it is a critical component of maintaining a strong LP relationship.

The operational playbook for engaging family office LPs

Engaging with family office LPs requires a thoughtful, operational playbook that covers the entire investor lifecycle.

Sourcing and due diligence

• Trusted network: Your best path to a family office is often through a warm introduction from lawyers, accountants, or other fund managers who already have a relationship with them.

• Rigorous review: Once you connect, be prepared for a thorough due diligence process.

Onboarding and compliance

The investor onboarding process is a high-stakes first impression. Family offices demand a seamless and secure closing process, with stringent know your customer (KYC) and anti-money laundering (AML) checks to mitigate risk.

Reporting and communications

Family offices have high expectations for transparency and communication. They require more than quarterly PDFs sent over email; they want on-demand access to performance metrics.

Distributions and tax considerations

Managing distributions and tax reporting for family offices can be complex.

How family offices differ from institutional LPs

Governance and decision-making

The governance structure of an investor directly influences the speed and style of their decision-making. The decision-making process in a family office might conclude with a principal after a single meeting. In contrast, an institutional LP often requires a lengthy, committee-based approval process that can span months.

Risk tolerance and time horizon

While family offices have a long-term investment horizon and a high tolerance for illiquidity, their approach to risk is steady, with 65% of family offices planning to maintain the same level of portfolio risk in 2025 as they did in 2024.

Relationship management

Ultimately, effective relationship management shows that the connection with a family office is a long-term partnership, not just a capital allocation. It's built on a foundation of trust, transparency, and consistent operational excellence.

Frequently asked questions about family offices

How does a family office make money?

A single-family office is a cost center funded by the family it serves, so its goal is wealth preservation and growth, not generating its own revenue. A multi-family office, however, makes money by charging its clients fees, which are often based on the assets under management (AUM).

What is the difference between a family office and a PE firm?

Typically, a family office is an investor (an LP) that allocates capital to various funds, though many also make direct investments in companies. A PE firm is a fund manager (a GP) who raises capital from LPs like family offices to make those investments.

What is the most effective way to approach a family office for funding?

The most effective way to approach a family office is through a warm introduction from a trusted source. These can come from lawyers, accountants, or other fund managers in your network who already have an established relationship with the family office.