Why smaller companies hire a CFO part time
A CFO is an expensive seat to fill full time, and most companies under a certain size do not have a full week of CFO work. They have a few hard problems that repeat. Cash planning, a monthly reporting package, a budget cycle, and the occasional deal or raise.
A part-time arrangement matches the cost to the work. You pay for the days the numbers matter and nothing in the weeks they do not. That is the same idea as a fractional CFO, and in practice the two terms describe the same kind of person. Buyers searching for part-time help usually want one thing, which is a clear cap on hours and cost.
The other reason is speed. A senior executive search takes months. A part-time engagement can start within a couple of weeks of your first intro call, which matters when a lender, investor, or board member is already waiting on your numbers.
The work a part-time CFO takes off your plate
Think in terms of recurring deliverables rather than titles. Here are the jobs most part-time CFOs own once they settle in.
- A rolling 13-week cash forecast that you review every Monday.
- An annual budget and a monthly variance report that explains the gaps in plain language.
- Board, investor, or lender packages built from the same clean source of numbers.
- Unit economics, such as customer payback and margin by product line.
- Pricing and hiring models that show the cash effect before you commit.
- Vendor, banking, and insurance negotiations.
- Oversight of the bookkeeper, payroll, and tax preparer.
You should not expect them to enter invoices or reconcile accounts. If those jobs are piling up, add a fractional controller so the CFO keeps their hours on analysis and decisions.
How many hours you really need
Scope drives price, so decide the hours before you read profiles. The right number depends on your stage and what is happening this quarter.
At 5 hours a week, you get a monthly package, a budget check, and a standing call. That works for a stable business with clean books that needs a second set of senior eyes. At 8 to 10 hours, you add active forecasting, hiring plans, and light fundraising support. This is the most common range.
At 15 to 20 hours, the CFO is deep in a raise, an acquisition, a restructuring, or an audit. Treat these as temporary peaks. If you hit 20 hours for six months straight, compare the cost with a full-time hire. Our guide to scoping a part-time senior role walks through the same decision with a worksheet you can copy.
You can change the cap later. Contracts on Side.work carry a weekly hours cap, and both sides can adjust it with notice.
Part-time CFO versus a full-time hire or a bookkeeping service
People often compare a part-time CFO against the wrong thing. The honest comparison is against the other ways you could get finance help right now.
| Choice | What you pay | How fast it starts | Level of experience | Flexibility | How you pay |
|---|---|---|---|---|---|
| Part-time CFO via Side.work | Hourly rate for approved hours plus 12, 8, or 5 percent fee | Often within weeks | Senior executive | Raise or lower the weekly cap with notice | One invoice after timesheet approval |
| Full-time CFO | Salary, benefits, and equity | Several months to recruit | Senior executive | Low, a long commitment | Payroll |
| Bookkeeping service | Flat monthly fee | Days to weeks | Entry to mid level | Easy to cancel, limited scope | Monthly bill |
| Generic freelance marketplace | Wide range, low to high | Quick to post, slow to vet | Hard to verify | Varies by person | Marketplace escrow |
The takeaway is simple. A bookkeeping service records the past. A part-time CFO plans the future. If you need both, buy both and keep each in its lane.
What a part-time CFO costs for a typical month
Here is a lighter engagement to show the math at a smaller scale. You hire a part-time CFO for 6 hours a week at $190 an hour, which sits inside the $175 to $300 range for senior US talent.
Monthly specialist cost is $190 times 6 times 4.33, which comes to $4,936.20. If you are on the Starter plan, the platform fee is 12 percent, or $592.34. That makes the monthly total $5,528.54, paid on one invoice for hours you approved.
If you grow into the Growth plan, the same hours carry an 8 percent fee, which is $394.90 instead of $592.34. You can compare the plans on the pricing page. The specialist keeps their full $190 rate in every case.
Now consider the cost of the same hours bought another way. If you hired a full-time finance leader to cover six hours of CFO work, you would pay for the other thirty-four hours of the week too, and you would still need to find someone who is both strategic and hands-on. Most small teams cannot give a full-time executive enough meaningful work, and the person usually leaves out of boredom or frustration within a year or two.
The point of the example is predictability. Six hours a week is capped in the contract, so the most you can owe in a typical month is already known before the first timesheet arrives.
How to find and start with a part-time CFO
Create a role on Side.work, choose CFO, and enter hours per week and your budget. You get a ranked shortlist with weekly availability bars, so you see right away who has room for you. Profiles show verified work email, a checked LinkedIn profile, live portfolio links, and confirmed payout identity.
Send intros to two or three people. After the calls, pick one and sign a contract with an hours cap and notice period. The NDA and IP assignment are attached by default. You then approve a timesheet each week and pay a single invoice. The steps are laid out on how it works.
If you are not sure the role is a CFO at all, look at the neighboring roles first. A fractional COO suits operational chaos, while a CFO suits cash and reporting problems.
Red flags to watch for before you sign
A part-time executive can be great or a poor fit, and the early signals are usually visible. Watch for these.
- They quote a result, such as a raise amount or a savings figure, before they have seen your books.
- They cannot show a sample monthly package or describe their reporting process.
- They are carrying so many clients that a four-hour response time is unrealistic.
- They avoid talking about the hours cap or push to leave it open ended.
- They have no view on who should do bookkeeping and who should do analysis.
Good candidates ask more questions than you do in the first call. They want to see the bank balance, the burn, and the last three months of close. They also tell you what they would not do, which is often the most useful part of the conversation.
Setting up the working relationship in week one
The first week decides how the next six months go. Spend it on access, expectations, and rhythm rather than analysis.
Start with access. The CFO needs read access to your accounting file, bank and card feeds, payroll summaries, and your billing system. Grant the minimum that lets them do the job, and keep a list of who has what. You can remove access with one email when the engagement ends.
Next, agree on communication. Pick one channel for quick questions and one standing call each week. Many part-time CFOs prefer a Monday call, because it sets the cash and spend priorities for the week. Put the next three calls on the calendar before the first one ends.
Then write the deliverables list. Keep it short. A monthly package by the tenth business day, a cash forecast refreshed every week, a budget review each quarter, and ad hoc support for contracts and financing are a typical set. Attach target dates, and make the hours cap match the list. If the list needs 12 hours and the cap is 6, one of them is wrong.
Last, define what the CFO will hand off. Decide who answers vendor questions, who talks to the bank, and who prepares tax documents. A clear map of owners prevents the common failure where a part-time executive becomes the default recipient of every finance email. Review the map after the first month and adjust.
Finally, ask the candidate how they plan to leave. A strong part-time executive documents the model, the reporting calendar, and the key assumptions so your team can run the routine pieces alone. That habit lowers your long-term cost and shows the person is focused on your results rather than on keeping hours.