What is the best tech stack for a family office in 2027?

Direct Answer

The best tech stack for a family office in 2027 is built around a consolidated multi-asset reporting and aggregation hub — Addepar for established single-family offices and most multi-family offices, or Eton Solutions AtlasFive when the family wants reporting, general ledger, bill pay, and workflow inside one purpose-built family-office ERP.

Around that hub you wire a multi-entity partnership general ledger (Sage Intacct), a dedicated bill-pay and cash-management layer (Nines or AgileLink), an alternative-investment document and capital-call engine (Canoe Intelligence), an estate and trust visualization tool (Luminary), and a hardened privacy and cybersecurity program — because a family office is not managing a fund, it is managing a single family's entire multi-asset balance sheet across public markets, private equity and venture stakes, direct real estate, operating businesses, collectibles, and dozens of legal entities and trusts.

Why the Family Office Tech Stack Works Differently

A family office is structurally unlike an RIA, a PE firm, a VC fund, or a hedge fund. It serves exactly one client — the family — and that client owns everything, everywhere, forever. Four mechanics drive every tooling choice.

1. Consolidated multi-asset reporting is the entire point. A hedge fund reports one fund's NAV; a family office must roll up public equities, fixed income, hedge fund and PE/VC fund commitments, direct private deals, multiple operating companies, three homes, an art collection, a vineyard, and a yacht into a single, accurate balance sheet the principal can read on one screen. No retail brokerage statement does this, which is why aggregation and reporting — not trade execution — sits at the center of the stack.

1. Multi-entity, partnership, and trust accounting is the back office. The wealth is rarely held in one name. It lives across LLCs, limited partnerships, grantor and non-grantor trusts, foundations, and holding companies, often dozens of legal entities with inter-entity loans and allocations. The general ledger has to consolidate across all of them, eliminate inter-company transactions, and produce entity-level and family-level financials. This is real fund-style partnership accounting, not personal bookkeeping.

1. Bill pay, cash management, and capital calls are an operational load, not a footnote. Someone has to pay the household staff payroll, the property taxes on five properties, the school tuition, the insurance, and — critically — fund private capital calls on a tight clock so the family does not default on a commitment. This administrative and cash-orchestration burden is a defining daily reality of the office and demands purpose-built tooling.

1. Estate, trust, tax planning, governance, and privacy define the long horizon. The family office plans across generations: entity org charts, gift and estate strategy, trust distributions, multi-state and multi-country tax, and family governance. And because a wealthy family is a high-value target, cybersecurity and privacy are first-class requirements, not an afterthought bolted on later.

The Core Stack, Layer by Layer

The exact tools a family office needs depend on size and asset mix, but the layers below are what genuinely distinguish a defensible family-office stack. Each layer lists the best-fit product, an honest reason, a realistic price, and one or two alternates.

Multi-Asset Reporting & Aggregation — Addepar (alternates: Masttro, SS&C Black Diamond, Asset Vantage). This is the hub and the most important decision the office makes. Addepar is the dominant choice for performance reporting and aggregation across public and private holdings, with strong handling of illiquid and alternative positions; it typically runs from roughly $30,000/year for a small office into the low-to-mid six figures for larger AUM.

Masttro competes hard on UHNW balance-sheet visualization including art and passion assets. SS&C Black Diamond and Asset Vantage are common, more affordable picks for emerging offices, with Asset Vantage notable for bundling accounting and reporting together.

Family-Office ERP (optional all-in-one) — Eton Solutions AtlasFive (alternate: Archway by SEI). Larger offices increasingly buy a purpose-built ERP that folds reporting, general ledger, bill pay, document management, and workflow into one platform. Eton AtlasFive is the leading enterprise option for established SFOs and MFOs that want to reduce vendor sprawl; pricing is enterprise-tier, generally six figures annually.

Archway (SEI) is the comparable integrated accounting-plus-reporting platform and is often paired with SEI's outsourcing services.

Multi-Entity General Ledger & Partnership Accounting — Sage Intacct (alternates: NetSuite, QuickBooks for the smallest offices). Sage Intacct is the workhorse GL for serious multi-entity consolidation, inter-entity eliminations, and dimensional reporting, and is the most common standalone GL in family offices not running an all-in-one ERP; expect roughly $15,000–$40,000+/year depending on entities and users.

NetSuite suits offices with significant operating-business accounting. The smallest emerging offices sometimes start on QuickBooks, but it breaks down quickly past a handful of entities.

Bill Pay & Cash Management — Nines (alternates: AgileLink, BILL, Ramp). This layer is the daily operational engine. Nines is purpose-built for family-office household and property operations, bill pay, and document management. AgileLink is a long-standing bill-pay and accounts-payable workflow tool built for family offices.

For lighter needs, BILL handles AP/AR and approvals, and Ramp adds corporate cards and spend management. Pricing ranges from a few thousand to low five figures per year.

Alternative-Investment & Capital-Call Automation — Canoe Intelligence (alternates: Arch, Addepar's alts module). Alternatives are where family offices drown in unstructured paperwork. Canoe Intelligence uses document automation to ingest capital-call notices, distribution notices, K-1s, and statements from hundreds of GPs, extract the data, and feed it into the reporting hub — eliminating manual re-keying.

Arch solves the same private-markets document and capital-call orchestration problem with a strong investor-portal angle. Pricing is typically mid five figures and up, justified by the headcount it replaces.

Estate, Trust & Tax Planning — Luminary (alternates: Vanilla, EstateExec, CCH for tax). Luminary visualizes entity org charts, trusts, and gift/estate strategy so advisors and the family can actually see how wealth is structured and flows across generations; it is increasingly the standard for sophisticated estate planning.

Vanilla offers similar estate visualization aimed at advisors. EstateExec handles estate administration and execution. On the tax side, CCH (Wolters Kluwer) remains the professional-grade compliance engine for the office's complex multi-entity, multi-state returns.

CRM, Relationship & Document Vault — Salesforce (alternates: Trove, Summitas, FundCount). Family offices manage relationships — advisors, GPs, attorneys, family members — and need a secure document vault and family portal. Salesforce is the flexible CRM backbone many offices configure for relationship and entity tracking.

Trove and Summitas provide family-office-specific secure portals and document vaults that present the consolidated picture to family members. FundCount bundles partnership accounting with relationship and investment tracking for offices that want accounting and CRM closer together.

Data Aggregation & Feeds — Addepar / Flanks / Plaid. Reliable custodial and account data feeds underpin everything above. Addepar ingests directly from most custodians; Flanks specializes in global multi-custodian aggregation; Plaid covers consumer and banking connections for cash and bill-pay reconciliation.

Cybersecurity, Privacy & Business Intelligence. A wealthy family is a high-value target, so a managed security program — endpoint protection, email security, identity and access management, encrypted communications, and ongoing monitoring (often via a specialized managed security provider) — is a non-negotiable layer, not a checkbox.

Finally, Microsoft Power BI sits on top of the GL and reporting data for custom family-level dashboards and ad-hoc analysis, with staff payroll handled through a standard provider such as ADP or Gusto.

Real Operators & What They Run

• A large single-family office (>$1B, full in-house team) — Runs Addepar as the reporting hub, Sage Intacct or Archway for multi-entity GL, Nines for bill pay and household operations, Canoe Intelligence for the heavy alternatives book, Luminary for estate and trust visualization, and a dedicated managed-security program. The office employs a CIO, controllers, and a tax team who live inside these systems daily.

• A multi-family office (MFO) serving 15–40 families — Often standardizes on Eton AtlasFive or Addepar at enterprise tier, layered with a multi-entity GL, client-facing portals (Summitas or Trove) so each family sees its own consolidated picture, and a data warehouse behind reporting to slice across the book. Scale and per-family customization are the constraints, not capability.

• An emerging / small family office (just spun out, <$250M) — Keeps it lean: Asset Vantage or SS&C Black Diamond for combined reporting and accounting, Sage Intacct if entities are complex, BILL for bill pay, and Canoe once the alternatives book grows past what a spreadsheet can track. The goal is one clean balance sheet without enterprise cost.

• An embedded family office (inside an operating company) — The family's wealth function lives alongside the operating business, frequently reusing NetSuite or Sage Intacct from the company for the GL, adding Addepar for the investment reporting the company ERP cannot do, and tightening privacy controls to separate family data from corporate systems.

• A family office outsourced to an OCIO — The family delegates investing and much of the back office to an outsourced chief investment office. Here the OCIO typically runs Addepar or Archway (SEI) on the family's behalf and delivers reporting through a portal, while the family retains a small internal team for governance, bill pay oversight, and estate coordination.

The pattern across all five: a consolidated multi-asset reporting hub, a multi-entity partnership GL, a real bill-pay and capital-call workflow, alternatives automation, and estate/trust planning — sized up or down, but always those same load-bearing layers.

Integration Architecture

The reporting hub is the single source of truth: custodial feeds and Canoe-parsed alternatives flow in, the GL consolidates entities, bill pay and capital calls execute against that cash picture, and everything surfaces to the family through a secure portal that the managed-security layer wraps end to end.

Failure Modes

1. Treating the reporting hub like a brokerage statement. Offices that pick a tool only good at public-market performance discover it cannot handle the private equity, direct real estate, and capital-call complexity that is 60%+ of the balance sheet. Choose the hub for the hard assets first; public markets are the easy part. Underweighting alternatives handling is the most expensive mistake an office makes.

1. Manual alternatives processing that never scales. A controller re-keying capital-call and distribution notices from 80 funds by hand will fall behind, miss a call, and introduce data errors into the consolidated report. Automate the alternatives document flow with Canoe or Arch before the book grows, not after a missed call embarrasses the office.

1. Letting the GL and the reporting hub disagree. When the multi-entity general ledger and the performance reporting system are reconciled by hand in spreadsheets, the family eventually gets two different net-worth numbers and trust in the whole stack collapses. Define one reconciliation process and one owner, and integrate the GL and hub deliberately rather than emailing exports around.

1. Under-investing in privacy and cybersecurity. A family office concentrates enormous wealth and sensitive personal data, making it a prime target for fraud and social engineering, yet many run on consumer-grade email and no identity controls. Wire-fraud and impersonation losses are real and large. Treat managed security, multi-factor authentication, and verified-payment controls as core infrastructure from day one.

Budget & Sizing

• Emerging / small family office (just spun out, <$250M, 1–4 staff). Asset Vantage or SS&C Black Diamond for combined reporting and accounting, Sage Intacct if entities are complex, BILL for bill pay, Canoe once alternatives grow. Roughly $50,000–$150,000/year in software and feeds.

• Established single-family office ($250M–$1B+, full in-house team). Addepar as the hub, Sage Intacct or Archway for GL, Nines for bill pay and household operations, Canoe for alternatives, Luminary for estate, plus a managed-security program. Roughly $200,000–$600,000/year in software, feeds, and security.

• Multi-family office (serving many families). Eton AtlasFive or enterprise Addepar, multi-entity GL, client portals, a data warehouse, and dedicated security and compliance. Software and infrastructure commonly run $500,000–$1.5M+/year, scaling with the number of families and the per-family customization required.

These are software, data-feed, and security figures only; they exclude the office's salaries, which are typically the largest line item by far.

30/60/90 Day Implementation Plan

• Days 0–30 — Foundation. Inventory every legal entity, custodial account, trust, and asset class so nothing is missed. Select the reporting hub and the multi-entity GL together, and sign the custodial data-feed agreements early since onboarding feeds takes weeks.

• Days 31–60 — Build. Load custodial feeds into the hub, connect Canoe to begin auto-ingesting alternatives documents, and configure the multi-entity consolidation, inter-company eliminations, and chart of accounts in the GL. Begin reconciling the hub and GL to a single net-worth number.

• Days 61–90 — Operate. Go live with the consolidated balance sheet and the family portal, stand up the bill-pay workflow and a capital-call calendar so no commitment is missed, and turn on the managed-security and verified-payment controls. Layer in Luminary and Power BI dashboards once the core data is trusted.

FAQ

Why does a family office need Addepar instead of just using its custodian's reports? A custodian only reports the assets it holds. A family office's wealth is spread across multiple custodians, dozens of private funds, direct deals, real estate, and operating companies, none of which a single brokerage statement can consolidate.

Addepar (or Eton AtlasFive) exists specifically to roll all of that into one accurate, performance-aware balance sheet.

What is the difference between a family-office stack and a hedge fund or PE stack? A hedge fund's stack centers on order management, execution, and prime-broker reconciliation; a PE firm's centers on fund administration, LP reporting, and deal pipelines. A family office is the LP and the owner of everything — its stack centers on consolidated multi-asset reporting, multi-entity accounting, bill pay, alternatives tracking, and estate planning, not trade execution.

Do I need Canoe Intelligence if I only have a few private funds? Probably not at first. With a handful of funds, a controller can track capital calls and distributions manually. Once the book passes roughly 15–25 funds, the document volume and the risk of missing a capital call justify Canoe or Arch, which pay for themselves in time saved and errors avoided.

Should an emerging family office buy an all-in-one ERP like Eton AtlasFive? Usually not on day one. The all-in-one ERPs are enterprise-priced and best suited to established SFOs and multi-family offices with real complexity. An emerging office is better served by Asset Vantage or Black Diamond plus Sage Intacct, then consolidating onto an ERP later if vendor sprawl becomes a genuine problem.

How important is cybersecurity for a family office, really? It is one of the most important layers. Wealthy families are targeted for wire fraud, impersonation, and data theft, and the losses can be enormous. A managed-security program with identity controls, encrypted communication, and verified-payment procedures is core infrastructure, not an optional upgrade.

Can one person run the family-office tech stack? At the emerging end, a single capable controller plus an outsourced provider can run a lean stack. As assets, entities, and alternatives grow, the office needs a small team — typically reporting, accounting, bill pay, and someone owning data integrations and security — because the consolidation and capital-call workload outgrows any one person.

Sources

• Addepar — product documentation on multi-asset performance reporting and aggregation for family offices, 2026.
• Eton Solutions — AtlasFive family-office ERP platform overview and case studies, 2026.
• Canoe Intelligence — alternative-investment document automation and capital-call processing materials, 2025.
• Sage Intacct — multi-entity consolidation and dimensional accounting documentation, 2026.
• Luminary — estate and trust planning visualization platform overview, 2026.
• Nines — family-office bill pay, household operations, and document management product pages, 2025.
• Family Office Exchange (FOX) — technology and operations benchmarking reports for single- and multi-family offices, 2025–2026.
• Deloitte — Family Office Insights series on governance, technology, and cybersecurity, 2026.
• EY — single-family-office operating-model and outsourcing-versus-insourcing analyses, 2027.