Outsourcing has evolved from a niche solution to the prevailing operating model for family offices. According to a 2025 survey from RSM, 97% of US family offices are pursuing some form of strategic outsourcing, spanning investment operations, accounting, reporting and, increasingly, tax planning and compliance. For most single- and multi-family offices, the debate has moved past whether to outsource, but which functions to hand off and to whom.
That shift fundamentally changes the definition of success. When outsourcing is the norm rather than the exception, the quality of the transition, not just the selection of provider, becomes the variable that separates a smooth handoff from a disruptive one. A due diligence process can take months and still leave a family office unprepared for what happens after the decision is made.
Data Migration Is Usually the Biggest Obstacle
The biggest operational challenge in any outsourcing transition is data. Family offices typically hold years of records across disparate systems, often with inconsistent formats, duplicate entries and gaps that only surface when migrating to a new platform. Reconciling that history while mapping it to the provider's systems is time-consuming and easy to underestimate.
It's also the point in the process with the most long-term upside. Migration forces a family office to clean up legacy data, decide what information needs to be carried forward and establish a baseline the new platform can build on. Firms that treat this step as a formality tend to inherit their old data problems in a new system. Firms that treat it as a genuine cleanup exercise start the relationship with a more reliable foundation for success.
Portfolio Complexity and Regulation Are Driving the Move
The pressure to outsource isn't uniform across family offices, but a few factors show up consistently. Portfolios that mix public securities, private markets, real estate and direct private investments generate accounting and reporting demands that exceed what most in-house teams and platforms were built to handle. Growth in assets under management is also bringing more family offices within the scope of regulatory reporting requirements that may not have applied when their operations were less complex. These obligations can include Form PF for SEC-registered private funds and beneficial ownership disclosure under the Corporate Transparency Act.
Add to that the cost of keeping technology current, the risk of concentrating institutional knowledge in select staff members, and the difficulty of finding specialized accounting and compliance expertise; outsourcing starts to look less like an optional strategy and more like a best-practice approach to building a resilient and scalable operating model.
Staff Roles Change, They Don't Disappear
A common misconception is outsourcing is intended to eliminate in-house teams. In practice, the objective is to redefine roles rather than headcount. Some employees move from execution to oversight of the outsourced relationship, and others take on higher value work that was previously constrained by limited capacity.
That shift only works if someone owns it. Family offices that manage transitions well typically designate an internal lead early—someone with institutional knowledge to map existing processes and approval authorities, educate the incoming provider on how the office actually operates and set implementation priorities. Without that ownership, the provider is left reconstructing institutional knowledge, which slows the transition and increases the risk that something gets missed.
A Structured Transition Reduces the Risk of Surprises
The difference between a smooth transition and a difficult one often comes down to whether the provider has a defined methodology, not just technical capability. A proven transition framework should assign clear roles and responsibilities to both sides, establish a realistic timeline with measurable milestones and outline exactly what data and documentation are required at each stage of the process. Many providers phase the rollout, implementing the most critical processes first, and in some cases run legacy and new processes in parallel to confirm the outputs match before fully cutting over.
That structure matters because the transition sets the tone for the relationship that follows. A provider that can't articulate or govern an onboarding plan is asking a family office to take the rest of the relationship on faith.
SS&C works with single- and multi-family offices on both fully outsourced and co-sourcing arrangements, covering portfolio accounting and financial reporting, operational support, partnership accounting, and tax reporting. Because the operating model is highly flexible, offices can outsource specific functions while retaining others in-house and adjust that balance over time as their operational, regulatory, and growth requirements change.
The decision to outsource is the first step. Planning for what comes after the decision is where family offices benefit most from getting it right. For a closer look at what to expect during the transition, how to prepare, and where the in-house team and outsourcing partner responsibilities divide, download the full white paper, Family Offices: Easing the Outsourcing Transition.