Summary
Challenge: Outsourced accounting delivered financial statements no sooner than 90 days after period close, making it difficult to get timely, principal-level financial visibility.
Solution: T Office brought accounting fully in-house on SumIt, consolidating all entities into one general ledger with native AP and banking integrations.
Result: Real-time, accurate financial reporting owned internally — with the infrastructure ready to support a major new multi-billion dollar business launch.
Customer Overview
T Office is a single-family office managing concentrated investment positions, operating entities, multiple LLC’s, and complex cash obligations — including private aviation — for its principal.
Unlike family offices running hundreds of small positions, T's portfolio is built on meaningful, concentrated holdings. The principal does not need an investment performance overlay, but precise, timely financial reporting from a well-structured general ledger.
The family office president set a clear and intentional internal KPI: the ability to report on the principal's financial position accurately, at any time, in-house.
Challenges
For years, T Office relied on an external accounting provider. The arrangement worked to a point, but as the principal's expectations around financial visibility grew, the limitations of the outsourced model became clear.
Financial statements were delivered up to 90 days after period close. By the time the numbers arrived, T Office was already deep into the next quarter — operating mainly on estimates. And like many outsourced relationships, there were natural information gaps, i.e., access to bank statements, transaction context, entity-level detail, that were simply harder to bridge at arm's length.
The decision to bring accounting in-house was less about dissatisfaction and more about control. The driving factor in this decision was about owning the data, the timeline, and the accuracy of the books.
Evaluation Process
Bringing accounting in-house meant starting from scratch and choosing the right system before a single entry was made internally. Two categories of software were quickly ruled out.
Enterprise platforms like Sage offered multi-entity capabilities, but came with costs and complexity far beyond what T Office needed. On the other hand, small-business tools lacked the multi-entity structure the family office required.
SumIt fit for three reasons:
Purpose-built for family office complexity — Multi-entity consolidation, AP, and banking, but without paying for capabilities that T Office doesn't use
Priced for a lean team — Significantly more accessible than enterprise alternatives
Founded by people who understand family offices — Knowing the team and trusting that the product roadmap would reflect clients like T Office mattered heavily
Solution
Going live on SumIt required reconstruction, as well as dedicated onboarding. To ensure accuracy from day one, T Office rebuilt its books from source documents rather than carrying forward historical data as-is. The SumIt team supported the migration, and the internal team did the work of getting every entity correct.
Key Results
One set of books, in-house, for the first time
T Office’s financial data is now internal, current, and reconciled on a defined timeline. Internal processes drive reporting cadence, with reconciliations and statements issued on a set schedule.
Accurate, timely data that the principal can rely on
The move in-house means T Office controls the inputs, the timeline, and the output, but without the 90-day lag that came with the outsourced model.
AP and banking integrations that eliminate double-entry
For a lean in-house team, having expense management and banking flow directly through the platform means data doesn't have to be touched twice.
Looking Toward the Future
T Office is preparing to launch a significant new business in the coming months — a large-scale operation that will add meaningful new entity complexity. SumIt will serve as the accounting backbone from day one, and the in-house infrastructure built over the past year scales directly into that structure.
On the product roadmap, the team is looking forward to partnership accounting for non-standard profit-sharing arrangements and AI-assisted bookkeeping to surface the right journal entry treatment for complex transactions.
Key Takeaways
For family offices considering the move from outsourced to in-house accounting, T Office’s experience makes a clear case: the right software makes the transition achievable without a large team.
SumIt continues to provide T Office with one ecosystem, including native integrations and infrastructure ready to support a major new business launch. As a result, T Office now has financial statements that the principal can rely on, owned entirely in-house.
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