A fractional CFO is a senior finance person who works with your firm part-time, on a retainer or a defined project, to help you make forward-looking money decisions: whether you can afford the next hire, what each practice area actually earns, and how much cash the firm needs to keep on hand.
Danielle Hendon, who runs a fractional CFO firm for small and boutique law firms, put the starting point plainly in the ABA's Law Practice Magazine (September/October 2026 issue, posted September 5, 2026): from the day a firm opens, the owner is already functioning as its CFO, by necessity rather than training. So for a small firm, ask whether doing that job yourself is still working, and what has to be true before paying someone else to do it is worth the money.
What a fractional CFO does for a law firm
Your bookkeeper records what happened. Your tax preparer files the returns and plans the tax bill. A CFO works on what the firm should do next, using the numbers the other two produce. For a law firm that usually means questions like these:
- Hiring. Can the firm afford another associate or paralegal through a slow quarter, and how many billable hours does that person need to cover their cost?
- Revenue that never arrives. How much of the time your team records turns into invoices, and how much of what you invoice turns into cash? Hendon's article frames this as finding "where value is getting lost before it hits an invoice."
- Practice area and client mix. Which matters, fee types or referral sources earn the most once the time spent on them is counted?
- Budget and cash. A monthly budget built from real history, and a cash forecast that accounts for the gap between doing the work and collecting for it. In a contingency practice that gap can be long and uneven.
- Owner pay. How much the owners can take out without starving the firm of cash. How that pay is structured for tax is a question for your tax preparer, and a good CFO will coordinate with them rather than replace them.
A fractional CFO doesn't categorize transactions or reconcile your operating account. They need someone else to have done that already, which is why the order of hiring matters.
Do I need a fractional CFO for my law firm?
Hendon's article is direct about size: for most law firms, especially those under a few million dollars in annual revenue, a full-time CFO is "neither practical nor necessary." A part-time CFO is the option it puts forward for a firm that needs strategic guidance before it needs an executive.
That still leaves the question of whether you need one now. These are the situations where outside CFO time is most likely to earn its fee:
- You want to hire and can't tell whether the firm can afford the cost if a big matter settles late or a client pays slowly.
- Revenue looks fine on paper and you still don't know where the money goes each month.
- You're adding a partner, a second office or a new practice area, and the decision depends on a forecast nobody has built.
- You're thinking about selling the firm, bringing in a successor or changing how partners are paid, and you need the numbers to support it.
And these are signs you aren't ready yet, whatever the firm's revenue:
- Your books run weeks or months behind, so any forecast would start from stale numbers.
- Operating money and client money aren't cleanly separated in the books.
- You don't get a monthly profit and loss statement and balance sheet you trust.
If the second list describes your firm, a CFO's first months go to fixing the records, at CFO rates. Hendon makes the same point: the foundation "always starts with the books," and a reconciled account "isn't the same thing as a trustworthy one."
What type of law firm needs a virtual CFO
There's no revenue line that settles it, and practice type matters less than how the firm's money moves. A firm gets more out of CFO help when cash arrives unevenly, as it does in contingency work, when it employs several lawyers and staff whose pay has to be covered every month, or when the owners are making a decision that changes the firm's size or structure. A solo practitioner with steady flat-fee work and current books may be able to answer these questions from a good monthly report.
How much does a fractional CFO cost for a small law firm?
Published fractional CFO prices are hard to find. Here are two dated reference points, both read on November 5, 2026:
| Source | What it says | Market |
|---|---|---|
| Hendon, ABA Law Practice Magazine, posted September 5, 2026 | Fractional CFO engagements average $5,000 to $10,000 per month, depending on the firm's size. A full-time CFO at a midsized company typically earns $150,000 to $250,000 in base salary. | Law firms, from an author who runs a fractional CFO firm |
| Burkland fractional CFO pricing page | Tiers starting at $1,600, $2,500 and $4,200 per month; a typical engagement of about $19,000 to $50,000 a year. | Startups, from one provider |
The two sources describe different markets and different scopes, so treat them as a range to ask about rather than a rate card. Engagements come as a monthly retainer, an hourly rate, or a fixed fee for a defined project such as building a first budget. When you compare quotes, get each one to price the same written list: which reports and forecasts, how many meetings a month, whether bookkeeping is included, and what costs extra.
Is a fractional CFO worth it for a small firm?
It's worth it when the decisions in front of you are bigger than the fee. At $5,000 a month, a CFO costs $60,000 a year, so the hire, the partner change or the pricing fix they help with has to be worth more than that. For a firm making one of those decisions on clean books, it can be. For a firm under about $1 million in revenue with books that are behind, the money does more on the foundation first:
- Books that are current every business day, with operating accounts kept separate from client trust funds.
- A monthly profit and loss statement and balance sheet, reviewed by an accountant, that you can read in ten minutes.
- Revenue you can split by practice area or fee type, so you can see which work earns the most.
- A tax preparer who plans owner pay and estimated payments with you during the year.
With that in place, you may be able to answer the hiring and cash questions yourself. When you can't, a CFO you bring in starts on decisions on day one instead of cleanup.
If your firm holds client money, our guide to the IOLTA account covers what belongs in it and the monthly three-way reconciliation.
Start with books a CFO could use
Median keeps a small firm's operating books current every business day, with a real accountant reviewing the work, and produces the monthly reports you need to see where the firm stands. Tax filing is available as a separately scoped add-on. Median isn't a CFO and doesn't sell CFO services; it's the bookkeeping and reporting a CFO, or you, would work from. Trust-related work is reviewed separately before any engagement.
See bookkeeping for small law firms, or book a 20-minute call with Jacob, Median's co-founder, to talk through where your books are today.