Can You Help Us Build a Finance Function from Scratch?

Building a finance function from scratch is one of the most rewarding and impactful things a fractional Finance Director does for a growing business. Many SMEs reach a critical inflection point — typically somewhere between £500,000 and £3m turnover — where the ad hoc arrangements that served them in early growth are no longer adequate. The business needs a proper finance function: the right software, the right people, the right processes, and the right reporting. A fractional FD can design and build all of this.

The advantage of having a fractional FD lead this build rather than attempting it without expert guidance is enormous. The FD brings knowledge of what good looks like, what common mistakes to avoid, and how to sequence the build correctly so that each element is in place before the next layer of complexity is added. Building a finance function without this expertise typically results in a patchwork of tools and processes that require expensive remediation later.

What Does "Building a Finance Function from Scratch" Actually Mean?

For businesses in this position, "from scratch" usually means one or more of the following situations: the business has been running on bank statements and a spreadsheet, managed by the owner with ad hoc input from an accountant; it has recently been spun out of a larger group and no longer has access to the parent's finance shared services; or it has grown rapidly through a phase where finance was not prioritised, and now has a chaotic collection of disconnected tools, processes, and records that need to be rationalised and professionalised.

In each case, the task is the same: establish the infrastructure, people, processes, and information flows that a business of this scale and complexity needs to operate safely and to support informed decision-making.

The Four Pillars of a Finance Function Build

1. Technology and Systems

The accounting software platform sits at the centre of the finance function. Choosing the right platform — and configuring it correctly — is one of the most consequential decisions in a finance build. The wrong choice creates years of limitation and friction; the right choice provides a scalable foundation that grows with the business.

For most UK SMEs, the choice sits between Xero, QuickBooks, and Sage. Each has strengths and weaknesses depending on the business model, transaction volume, integration requirements, and team capability. A fractional FD evaluates these options against your specific needs rather than defaulting to the platform they are most familiar with, and ensures the chosen platform is configured correctly from the outset — with the right chart of accounts, cost centre structure, and integration with ancillary tools such as expenses management, CRM, and payroll.

Beyond the core accounting platform, the fractional FD will identify where additional tools add value: automated bank feeds, receipt capture apps, invoice processing automation, cash flow forecasting tools, and management reporting dashboards. The goal is a technology stack that reduces manual effort, improves accuracy, and produces financial information faster.

2. Processes and Controls

Technology without process is ineffective. A fractional FD establishes the financial processes and controls that ensure the finance function operates reliably and with integrity. This includes:

• A month-end close checklist and timeline, ensuring accounts are produced consistently and on time
• Authorisation controls over expenditure and payments, preventing fraud and ensuring management visibility
• Purchase order and invoice approval workflows that match commitments to liabilities
• Bank reconciliation disciplines that prevent errors accumulating undetected
• Expense claim processes that capture costs accurately and in a timely manner
• Credit control procedures that protect cash flow by minimising debtor days

These processes are documented clearly enough that they can be followed consistently by different people, reducing the risk of key-person dependency and making the business more resilient.

3. People and Structure

Once the technology and process foundation is established, the fractional FD defines the human component of the finance function: which roles are needed, at what levels, and whether they should be in-house, outsourced, or delivered by a combination of both. This people design is informed by the business's current scale, trajectory, and budget.

In most early-stage builds, the initial team is intentionally lean — perhaps a part-time bookkeeper and the fractional FD providing strategic oversight — with a roadmap for when additional roles will be needed as transaction volumes and complexity grow. Our article on finance team structure and roles provides a detailed framework for this design process.

4. Reporting and Information

The finance function exists to produce financial intelligence that drives better business decisions. The FD designs the management reporting framework: the format and content of monthly management accounts, the KPIs that will be tracked, the frequency and format of cash flow reporting, and the financial models that will support planning and scenario analysis.

Getting the reporting design right at the outset saves enormous effort later. Management accounts that are designed around the business's specific commercial model — rather than generic profit and loss and balance sheet statements — are dramatically more useful to the business owner, and establishing this standard early creates the foundation for increasingly sophisticated financial intelligence as the business grows.

"We went from running our £2m business off bank statements and gut feel to having a proper finance function in four months. The fractional FD designed everything, helped us hire a bookkeeper, and had us producing monthly management accounts within the first reporting cycle."

Sequencing the Finance Build Correctly

The order in which elements of a finance function are built matters significantly. A common mistake is to focus on sophisticated reporting before the underlying data is reliable — which produces impressive-looking dashboards full of inaccurate numbers. The correct sequence is: data integrity first (accurate bookkeeping and bank reconciliation), then process reliability (consistent month-end close), then reporting quality (meaningful management information), then analytical sophistication (scenario modelling and forecasting).

A fractional FD follows this sequence deliberately, ensuring each stage is solid before moving to the next, and communicating clearly with the business owner about what to expect at each phase.

For businesses that need support hiring the right people for each stage of the build, our article on hiring the right finance staff covers candidate selection and assessment in detail.