US · Decision guide · CFO
Fractional CFO vs Full-Time CFO
The short answer
For most US companies under roughly $10M in revenue, a fractional CFO is the correct choice: you get senior financial judgement for $48,000–$108,000 a year instead of the $220,000–$350,000+ all-in cost of a full-time hire. A full-time CFO becomes the right call once finance is a daily, full-workload function — typically past $10–15M in revenue, during a complex raise, or when an exit is in view.
Fractional CFO vs Full-Time CFO — side by side
| Dimension | Fractional CFO | Full-Time CFO |
|---|---|---|
| Annual cost | $48,000–$108,000 (fixed monthly retainer) | $220,000–$350,000+ all-in (salary, bonus, equity, payroll tax, benefits) |
| Time to start | Days — engagement scoped and live within a week | 3–6 months to search, hire and onboard |
| Seniority of the work | Senior throughout — you engage the principal directly | Senior — but only as good as the one person you hired |
| Scope | The decisions that move the company: forecasting, cash, board reporting, raises | Everything finance, including full-time depth and daily presence |
| Scalability | Scale hours up or down as the business changes | Fixed cost regardless of how heavy the month is |
| Risk if it isn't working | Low — a fixed-term engagement, simple to adjust or end | High — a wrong senior hire is costly and slow to unwind |
| Best fit | Pre-revenue to ~$10M revenue; needs judgement, not headcount | $10–15M+ revenue; finance is a daily full-workload function |
When Fractional CFO is the right call
Choose a fractional CFO when you need CFO-grade judgement — forecasting, cash strategy, board reporting, fundraising support — but the volume of that work does not fill a full-time role. This is the reality for the large majority of businesses under $10M in revenue. You get the senior thinking without committing to a senior salary, you can start within a week, and if your needs change you adjust the engagement instead of managing a difficult exit. It is also the right answer when you simply cannot yet attract a strong full-time CFO — a credible fractional CFO is a genuine upgrade on hiring a junior one.
When Full-Time CFO is the right call
Choose a full-time CFO when finance has genuinely become a daily, full-workload function: typically past $10–15M in revenue, with multiple entities, a finance team to lead, an institutional raise in progress, or an exit on the horizon that needs someone in the building every day. At that point the full-time cost is justified by the workload, and the daily presence and team leadership matter more than the cost saving. A good fractional CFO will tell you when you have crossed that line — and help you hire the full-time successor.
The honest verdict
This is a stage question, not a quality question. A fractional CFO is not a watered-down CFO; it is the same seniority bought in the right quantity for a company that does not yet need it full-time. The mistake is not choosing fractional — it is staying fractional too long, or hiring full-time too early. For most owner-managed businesses, fractional is the correct structure for years, and the move to full-time is a milestone you grow into. BlackpeakCFO delivers fractional CFO engagements at $3,995–$8,995/month, fixed and personally delivered by a chartered management accountant — and will tell you honestly when you have outgrown it.
"The question is never 'fractional or full-time'. It's 'how much CFO does this business actually need this year' — and for most companies, the honest answer is: not a whole one."
Stuart Wilson, ACMA CGMA — founder, BlackpeakCFO
Common questions
Is a fractional CFO less experienced than a full-time CFO?
No — often the opposite. A fractional CFO typically brings broad cross-company experience precisely because they have worked across many businesses. The difference is quantity of time, not quality of person. With BlackpeakCFO you engage Stuart Wilson, ACMA CGMA, directly — 24 years in finance, seven as a Group Finance Director — not a junior operating under a senior name.
At what revenue should I hire a full-time CFO?
There is no hard threshold, but finance usually becomes a full-time function somewhere past $10–15M in revenue — earlier if you have multiple entities, inventory complexity, a finance team to manage or an institutional raise underway. Below that, a fractional CFO almost always delivers the same judgement at 60–80% less cost. The trigger is workload, not vanity.
Can a fractional CFO help me hire my eventual full-time CFO?
Yes, and a good one will. Part of the fractional role is recognising when you have outgrown it — then writing the job specification, setting the compensation benchmark, sitting in on interviews and handing over clean systems and forecasts. The transition should be planned, not abrupt.
What does a fractional CFO actually cost compared with a full-time hire?
A fractional CFO costs $48,000–$108,000 a year as a fixed monthly retainer. A full-time US CFO costs $220,000–$350,000+ all-in once salary, bonus, equity, employer payroll taxes and benefits are counted. For a company that does not yet need finance as a daily function, that is a 60–80% saving for the same level of judgement.
Is it risky to rely on a part-time CFO for something this important?
The risk runs the other way. A fixed-term fractional engagement is low-risk: it is simple to scope, adjust or end. A wrong full-time senior hire is expensive, slow to unwind and damaging to morale. Fractional lets you secure senior financial control immediately, with a clean off-ramp if your needs change.
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