Recognising that a business needs stronger financial leadership is one decision. Determining how much of it you need is another. For many growing businesses, the choice appears to be between continuing with the existing finance team or hiring a full-time Chief Financial Officer. There is another option. A fractional CFO provides CFO-level capability for part of the week or month, allowing a business to access senior financial leadership without immediately creating a full-time executive role. Neither model is inherently better. The right question is how much CFO capability the business genuinely needs.
Start with the work, not the title Before deciding whether a CFO should be fractional or full-time, identify what you actually need them to do. The requirement might include:
- cash flow forecasting
- management reporting
- strategic planning
- project performance
- banking
- working capital
- capital allocation
- board reporting
- systems improvement
- finance team leadership
- acquisitions
- major commercial decisions.
Then consider how much time those responsibilities genuinely require. A business may discover that it has important CFO-level work but not 40 hours of it every week. That is where fractional support can make sense.
When a fractional CFO works well A fractional model tends to work particularly well where there is already a capable internal accounting team. The Finance Manager or Financial Controller handles the day-to-day finance function. The fractional CFO sits above that team and focuses on the areas requiring greater experience or strategic perspective. That might mean one or two days per week spent on forecasting, project reviews, cash, banking, management meetings and major decisions. The model can also work well during a period of transition. A business might need intensive CFO involvement initially to establish better systems and processes, followed by a lighter ongoing requirement.
When full-time becomes the better answer There is a point where fractional support stops being the efficient solution. If the CFO is required in the business every day, management should recognise that. Common indicators include:
- a large finance team requiring daily leadership
- complex funding structures
- significant acquisition activity
- substantial investor or board requirements
- multiple business units
- frequent major transactions
- high regulatory complexity
- continual executive decision-making requiring CFO involvement.
At that point, employing a full-time CFO may provide better continuity and value. A good fractional CFO should be prepared to recommend that transition when the business reaches it.
Compare capability, not just cost The obvious attraction of fractional support is lower cost compared with employing a senior CFO full-time. But cost alone is the wrong basis for the decision.
The comparison should be: What capability does the business need? How frequently does it need it? What experience does the person need to bring? A relatively inexperienced full-time hire isn't automatically better than an experienced CFO working two days per week. Likewise, an experienced fractional CFO isn't appropriate if the organisation genuinely needs daily executive leadership. The objective is matching experience and capacity to the requirement.
Consider what already exists internally The strength of the existing finance team matters enormously. Imagine a business with:
- a strong Finance Manager
- competent transactional staff
- reliable month-end reporting
- good accounting controls.
It may not need another person managing those activities full-time. What it may need is someone who can take responsibility for: forecasting cash and working capital banking commercial challenge strategy management decision support. That can be an excellent fractional structure. A business with a weak underlying finance function may require something different.
Senior advice cannot compensate indefinitely for unreliable basic accounting.
Fractional doesn't mean external commentary There is a poor version of the fractional model. An adviser arrives once a month, reviews the financial statements, provides some observations and leaves. That is closer to advisory than CFO leadership. A genuine fractional CFO should be sufficiently embedded to understand the business, challenge assumptions and share responsibility for improving financial management. They should know the leadership team. They should understand how the business makes money. They should understand the key risks. And management should be able to involve them before major decisions are made. The arrangement may be part-time. The accountability shouldn't feel superficial.
Flexibility can be valuable during growth One advantage of the fractional model is that the level of support can change. A business may initially need significant work around:
- cash forecasting
- management reporting
- project controls
- banking
- finance processes.
Once those foundations are operating effectively, the CFO requirement may reduce. Alternatively, continued growth may increase the requirement until a full-time appointment becomes appropriate. That flexibility can be useful for businesses whose financial needs are evolving quickly.
Warning signs that fractional support isn't enough I would reconsider the model if:
- the CFO is consistently required outside the agreed time
- major decisions are being delayed waiting for CFO availability
- the finance team requires substantial daily leadership
- the CFO has become operationally responsible for too many functions
- business complexity has materially increased
- board or investor requirements have become intensive
- management is using fractional support primarily to avoid making a necessary senior hire.
Fractional CFO should be an efficient operating model. It shouldn't become a way of permanently understaffing an executive function.
Warning signs that a full-time CFO may be too early The reverse can also occur. A business may recruit a full-time CFO because the title feels appropriate for its growth. But if most of the role is spent performing Finance Manager activities, the organisation may be paying executive-level cost for work that doesn't require executive-level capability. That can create unnecessary overhead. Before hiring, management should be clear about what the CFO will actually spend their week doing.
A simple way to decide Consider three questions. 1. What CFO-level outcomes do we need? Identify the actual responsibilities rather than the job title. 2. What capability already exists internally? Understand what the existing finance team can own. 3. How much senior CFO time is genuinely required? Not theoretically. In practice.
If the answer is one or two days per week, fractional may be appropriate. If the answer is effectively every day, the business probably needs a full-time CFO.
The model should evolve with the business There doesn't need to be a permanent answer. A business might progress through: Finance Manager then Finance Manager + Fractional CFO then Financial Controller + Fractional CFO then Full-Time CFO + Finance Team That isn't the only pathway. But it illustrates an important principle. Financial leadership should scale with the complexity of the organisation. The goal isn't to minimise finance cost indefinitely. Nor is it to build a large corporate function prematurely. It is to have enough capability to support management decisions, control financial risk and prepare the business for what comes next.
Salt Strategic Advisory provides fractional CFO support to growing businesses that need experienced financial leadership without necessarily requiring a full-time CFO. The right starting point is determining what CFO capability the business actually needs, how much already exists internally and how frequently senior support is required.