Many law firms reach a point where the numbers feel too large and too complex to manage with gut feel and a basic bookkeeping setup, but not quite large enough to justify a full time CFO. That in between space is where fractional CFO services often make sense.
Legal practices have quirks that generalist finance professionals may not appreciate at first. The right fractional CFO acknowledges those quirks and works with them instead of trying to force a generic corporate template on your firm.
One of the most sensitive areas in a law firm is client trust accounting. Rules around IOLTA accounts, timing of transfers, and documentation are strict. Mistakes can have regulatory and reputational consequences, not just financial ones.
A fractional CFO who understands trust accounting can help design controls that keep client funds clearly separated, ensure reconciliations happen on schedule, and make it easier to demonstrate compliance if questions arise.
Partner pay structures often mix salaries, draws, and profit shares. When those mechanisms grow organically over time, they can become hard to explain and even harder to forecast. Partners may not share the same understanding of how compensation responds to firm performance.
A CFO can model different structures, show partners how various approaches affect cash flow, and create clearer policies around draws and year end distributions. That clarity tends to reduce friction and surprises.
Not all matters are equally profitable, even if billable rates look similar on the surface. Contingency work, flat fee arrangements, and long running cases can tie up capacity and cash in ways that are not obvious from standard time reports.
Fractional CFOs often help firms build better case level reporting: estimated versus actual hours, expenses by matter, and realized rates. Over time, this information can guide which kinds of work you lean into and which you price differently or decline.
Many firms still think in terms of monthly billings and collections without connecting those patterns to longer term cash needs. Growth plans, technology investments, and lateral hires require a view that stretches beyond the next quarter.
A CFO can build rolling cash flow forecasts that incorporate expected billings, payment behavior, seasonal patterns, and planned investments. That makes it easier to decide when you can safely add staff, sign a new lease, or adjust partner draws.
When law firms negotiate credit facilities, lease agreements, or major vendor contracts, having someone at the table who speaks both legal and financial language helps. Fractional CFOs often prepare materials for those discussions and join key meetings to answer detailed questions.
This presence can increase confidence on the other side of the table and sometimes lead to more favorable terms, simply because the firm is presenting a clearer financial story.
A small firm might be able to get by with informal budgeting and simple reports. As headcount, locations, and practice areas expand, those informal methods strain. Systems that worked for five lawyers feel chaotic at twenty.
Fractional CFO support allows you to install more robust planning, reporting, and control processes without jumping straight to a permanent C suite hire. When the time does come to add a full time CFO, much of the groundwork will already be in place.
For firms that want to practice law without constantly worrying about whether the numbers tell a coherent story, this kind of partnership can be a significant relief.

November 19, 2025
The image of a CFO sitting down the hall in a corner office does not match how many growing companies work today. Fractional CFOs are part of that shift.

November 19, 2025
When you start talking to investors or lenders, the quality of your numbers suddenly matters a lot. A fractional CFO can be the difference between a rough pitch and a calm one.