Fractional CFO UK small business
You need someone who can own the numbers, challenge the board, and help you make big decisions. You do not need a full-time finance director on the payroll. A fractional CFO in the UK gives small and medium-sized businesses access to senior finance leadership for a fraction of the cost and commitment of a permanent hire. This article explains what a fractional CFO does, when a small business might need one, and how to get the most from the relationship.
We cover the role, typical engagement models, and how it differs from an accountant or a part-time FD. This is for UK founders and leadership teams who are considering fractional CFO support.
What is a fractional CFO?
A fractional CFO (chief financial officer) is an experienced finance leader who works with your business for a set number of days or hours per month (or per quarter). They are not an employee; they are typically engaged on a retainer or project basis. They bring the strategic and operational experience of a full-time CFO: budgeting, forecasting, fundraising support, board reporting, M&A, and risk. The "fractional" part means you get that level of input without the full-time salary and without the long-term commitment. For more on how we do this, see our Fractional CFO service.
What does a fractional CFO do for a small business?
- Own the numbers. They make sure the management accounts, forecasts, and board pack are accurate, timely, and useful. They often work with your existing accountant or bookkeeper rather than replacing them.
- Support strategy. They help you model scenarios (e.g. what if we hire three people, or open a new site?), stress-test the plan, and present to the board or investors.
- Fundraising and M&A. If you are raising debt or equity, or considering a sale or acquisition, a fractional CFO can prepare the data room, build the model, and support negotiations.
- Challenge and advise. They ask the questions a good board would ask: Are we on track? What is driving the variance? What are the risks? They do not just report; they help you decide.
Example
A scaling tech company has a part-time bookkeeper and an external accountant for year-end. The founder is raising a Series A and needs a robust forecast, a clear narrative on unit economics, and someone to present the numbers to investors. They engage a fractional CFO for two days a month. The fractional CFO builds the model, cleans up the management accounts, and supports the raise. After the round, they stay on for one day a month to oversee reporting and planning. ICAEW and similar bodies describe the CFO role; a fractional CFO delivers that at a fraction of the full-time cost.
When does a small business need a fractional CFO?
There is no single trigger. Common situations include:
- You are scaling quickly and the numbers are getting complex.
- You are raising funding or planning a sale and need someone who can own the financial story.
- You have a board or investors who expect clear, professional reporting and you do not have the capacity in-house.
- You want to free the founder from spreadsheets and ad-hoc number-crunching so they can focus on the business.
- You are not ready for (or cannot afford) a full-time FD but you have outgrown "accountant and spreadsheet" only.
If that sounds like you, a discovery call can help clarify whether fractional CFO support is the right fit.
Fractional CFO vs accountant vs part-time FD
| Fractional CFO | Accountant | Part-time FD (employee) | |
|---|---|---|---|
| Focus | Strategy, planning, board, fundraising | Compliance, accounts, tax | Same as fractional, but employed |
| Commitment | Retainer, flexible | Project or annual | Contract of employment |
| Cost | Day rate × days | Fees per job | Salary + NI + benefits |
| Typical use | Growth, raise, board | Year-end, VAT, payroll | When you want a permanent but part-time presence |
A fractional CFO complements your accountant; they do not usually do the bookkeeping or filing. They work at the strategic and planning layer.
UK context and accuracy
Fractional CFO is a descriptive term, not a regulated title. The individual may be a qualified accountant (e.g. ACA, CIMA) or have equivalent experience. This article is for informational purposes only and does not constitute professional tax or financial advice. Please speak to a qualified adviser before taking action.
Frequently asked questions
How much does a fractional CFO cost in the UK?
Typically a day rate or monthly retainer. Costs vary with experience and scope. Many SMEs spend a few thousand pounds per month for one to three days. That is still far less than a full-time FD salary and package.
How many days per month do I need?
It depends on the complexity of the business and what you want them to do. Some clients need one day a month for reporting and planning; others need two or three for a raise or a major reforecast. You can scale up or down.
Can they replace my accountant?
Usually no. The accountant does compliance (accounts, tax, VAT, payroll). The fractional CFO does planning, strategy, and board-level reporting. Many clients have both.
What if we need more support later?
You can increase the retainer, move to a part-time FD, or hire full-time. The fractional model is flexible.
Do they need to be local?
No. Many fractional CFOs work remotely with regular calls and occasional on-site time. What matters is that they understand your business and can work with your team and systems.
Summary and next steps
A fractional CFO in the UK gives small businesses access to senior finance leadership without the cost and commitment of a full-time hire. They own the numbers, support strategy and fundraising, and challenge the board. If you are scaling, raising, or simply want that level of input for a few days a month, it is worth exploring.
If you would like to discuss whether a fractional CFO is right for your business, we would be glad to talk. At Figures Chartered Accountants we provide fractional CFO and management reporting to UK SMEs. You can book a discovery call or look at our Fractional CFO service.